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CN102272258A - Acrylate color-stabilized phenolic bound abrasive products and methods for making same - Google Patents

Acrylate color-stabilized phenolic bound abrasive products and methods for making same Download PDF

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Publication number
CN102272258A
CN102272258A CN2009801539581A CN200980153958A CN102272258A CN 102272258 A CN102272258 A CN 102272258A CN 2009801539581 A CN2009801539581 A CN 2009801539581A CN 200980153958 A CN200980153958 A CN 200980153958A CN 102272258 A CN102272258 A CN 102272258A
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Prior art keywords
colour
abrasive
acrylate
abrasive article
stable
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CN2009801539581A
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CN102272258B (en
Inventor
J·维加雅
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Saint Gobain Abrasifs SA
Saint Gobain Abrasives Inc
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Saint Gobain Abrasifs SA
Saint Gobain Abrasives Inc
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/20—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
    • B24D3/28—Resins or natural or synthetic macromolecular compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
    • B24D3/342—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent
    • B24D3/344—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent the bonding agent being organic
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/005—Stabilisers against oxidation, heat, light, ozone
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/10—Esters; Ether-esters
    • C08K5/101—Esters; Ether-esters of monocarboxylic acids
    • C08K5/103—Esters; Ether-esters of monocarboxylic acids with polyalcohols

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

Described is a color-stable abrasive article that includes a phenolic resin binder; a color stabilizer, a colorant, and abrasive grains. The color stabilizer includes at least one acrylate. The color-stable abrasive article is formed by a method including the steps of blending a resole and a color stabilizer to form a resole composition; contacting a plurality of abrasive particles with the resole composition; and curing the resole composition to produce the color-stable abrasive article. Thus provided are color stabilized phenolic bound abrasives and a method for making such abrasives that resist color change over time and upon exposure to high temperature and maintain the mechanical strength of a phenolic resin.

Description

The acrylate stable color, phenolic resin bonded abrasive product and make its method
Related application
The application requires the rights and interests of the U.S. Provisional Application submitted on November 17th, 2008 number 61/199,471.More than Shen Qing whole contents of teaching are combined in this by reference.
Background of invention
The diversified rosin products by the reaction product acquisition of phenols and aldehydes described in term " resol ".Phenols and formaldehydes are all reacted under acid and alkaline condition.If the phenol that the mixture of a kind of base catalysis of phenol and formaldehyde is every mole comprises the formaldehyde of one mole or more moles, so this mixture will produce resin or " resole " of a kind of thermoset (single step).The common basic cpd as the resole catalyzer comprises the oxyhydroxide of basic metal (as sodium, potassium or lithium).Though the catalytic resol of alkali metal hydroxide commercial be useful, they have a kind of undesirable trend, that is: aging when them, deepen through heating or when otherwise being cured.The known degree that deepens depends on the temperature of resin solidification or use and is exposed to time under this temperature.
The catalytic resol of alkali metal hydroxide be often used as abrasive product (as apply, agglutinating and three-dimensional, low-density abrasive product) a kind of component of bonding system.The problem that resin deepens is significant especially in abrasive material that applies and three-dimensional, low-density abrasive product, because the existence of bonding system more intuitively.And owing to the growth that deepens with temperature and exposure duration increases, thereby any variation in the temperature profile of product all can cause the colour-change within the product self.Colour-change is attractive especially for the product of light color, thereby causes people for aesthetic or other reasons and can not accept this series products.
In addition, the abrasive material bonding system can comprise tinting material so that indicate manufacturers, product type, application, or the like.Resin deepens and can disturb the painted of hope, thereby causes the finished product to have and the tinting material distinct colors that adds.For example, a kind of resin of normal flavescence will produce a kind of product with green color when making up with a kind of blue dyes or pigment after curing.On the other hand, if same yellow resin is combined with a kind of green colouring material or pigment, this resin will typically just produce another kind of green hue so.
A kind of known method that is used for giving at the phenolic resole resin colour stability comprises, terpolycyantoamino-formaldehyde resin is joined in this prescription.Though this has realized colour stability, the time that it has also given friability, Hua Gengchang solidifies and cause mechanical weakness and the nonferromagnetic substance that therefore reduces in the finished product.
The method of another proposition comprises a kind of alkaline ammonium salt is joined in the phenolic resole resin.Yet this method be not highly effective aspect the color of stablizing the resol product with specific colorants (as light blue and orange pigments or dyestuff).
Needed is a kind of effective resol colour stabilizer, and this colour stabilizer has reduced above-mentioned these problems and do not transmit undesirable characteristic in the finished product.
Summary of the invention
In one aspect, what the present invention is directed to is a kind of abrasive article of colour stable, and this abrasive article comprises: phenolic resin adhesive, colour stabilizer, tinting material and abrasive grain.Colour stabilizer comprises at least a acrylate.
In yet another aspect, what the present invention is directed to is a kind of method of making the abrasive article of colour stable, and this method may further comprise the steps: a kind of resole and a kind of colour stabilizer are carried out blend to form a kind of soluble phenolic resin composite; A plurality of abrasive particles are contacted with this soluble phenolic resin composite; And this soluble phenolic resin composite is solidified to produce the abrasive article of this colour stable.Colour stabilizer comprises at least a acrylate.
In yet another aspect, what the present invention is directed to is the method on a kind of grinding work-piece surface, and this method is included in a kind of abrasive article that grinds in the motion colour stable and is applied in a workpiece surface to remove a part of this workpiece surface.This abrasive product comprises the binding agent with resol, the colour stabilizer that comprises at least a acrylate and abrasive grain.
Therefore phenolic resin bonded abrasive material and a kind of method that is used to make this type of abrasive material of stable color are provided, and this class abrasive material opposing with the passing of time and the colour-change when being exposed to high temperature and kept the physical strength of resol.
Brief Description Of Drawings
From following will be clearly to foregoing the more specific description of exemplary of the present invention, these embodiments are as showing in the accompanying drawing, run through wherein that reference symbol refers to identical part like these different views.These figure need not to be pro rata, show on a plurality of embodiments of the present invention but focus on.
Fig. 1 is the synoptic diagram of sectional view of an embodiment of the abrasive tool of coating of the present invention.
Fig. 2 is the synoptic diagram of sectional view of another embodiment of the abrasive tool of coating of the present invention.
Detailed description of the invention
Be combined in this in full with it by reference in the application of these all patents of quoting, announcement and the content of teaching of reference.The title that particularly is people such as Everts is combined in this with it by reference in full for the United States serial 61/199,472 (this application and the application submit to simultaneously) of " Carboxylic Acid Ester Color-stabilized Phenolic Bound Abrasive Products and Methods for Making Same ".
The present invention relates to comprise the abrasive article of phenolic resin adhesive, this binding agent comes stable color by acrylate.The abrasive article of this stable color further comprises a kind of tinting material and abrasive grain.As used in this, if a kind of abrasive article or resin the same after about 2 hours of the curing down have a same color with it at about 235 °F in essence after about 235 °F down solidify about 8 hours, it just is considered to " colour stable " so.
Term " resol " is meant any resinous reaction product of a kind of phenol (as the phenol (as phenyl methylcarbamate, xylenol, p-tert-butylphenol and p-phenyl phenol) and the analogue of phenol, Resorcinol, alkyl replacement) and a kind of aldehyde (as formaldehyde, acetaldehyde and furtural and analogue)." the catalytic resol of the alkali metal hydroxide of stable color " is meant and a kind ofly comes solidified alkali metal hydroxide resol stable color, a kind of by the colour stable agent.
These abrasive products be characterised in that have a kind of phenolic resin adhesive, one or more acrylate colour stabilizers, one or more optional tinting materials, abrasive grain, support member or backing, and may further include solidifying agent class, non-reacted thermoplastic resin class, weighting agent class, grinding aid class and other additive kinds.
Make the structure and the method for abrasive article
In one embodiment, the abrasive article of this colour stable comprises: phenolic resin adhesive, colour stabilizer and abrasive substance.The abrasive article of colour stable can be an agglutinating, structurized, also or the abrasive material that applies.
The abrasive tool of coating of the present invention can comprise a kind of substrate, a kind of abrasive substance and this abrasive substance is remained on this suprabasil at least a phenolic resin adhesive.As used herein, term " abrasive tool of coating " comprises a kind of nonwoven abrasive tool.This abrasive substance such as abrasive material pellet, particle or their coacervate, may reside in the layer of abrasive tool of coating in (for example, resin-abrasive material) or two layers in (for example, making coating and size coat).The example of the abrasive tool of this type of coating that can make by these methods of the present invention has been shown in Fig. 1 and Fig. 2.Referring to Fig. 1, in the abrasive tool 10 of coating, substrate 12 is to use optional gum material coating 16 and optional pre-size coat 18 to handle.What cover this optional pre-size coat 18 is to make coating 20, has used abrasive substance 14 on this making coating, such as abrasive grain or particle.Size coat 22 can randomly be applied in makes on coating 20 and the abrasive material 14.What cover size coat 22 is optional super size coat 24.The application-specific that depends on them, the abrasive tool 10 of coating can comprise or can not comprise gum material coating 16 and/or pre-size coat 18.Similarly, depend on their application-specific, the abrasive tool 10 of coating can comprise or can not comprise size coat 22 and/or super size coat 24.Shown in Fig. 2 is the example of the abrasive tool of the coating that can form by these methods of the present invention, and wherein the abrasive tool 30 of Tu Fuing comprises an one binding agent/abrasive material 32 and the optional gum material coating 16 with a kind of abrasive substance and (one or more) tamanori.Can be randomly, can comprise as shown in fig. 1 pre-size coat 18, size coat 22 and super size coat 24 in the abrasive tool 30 of coating.The abrasive article of this coating can comprise a kind of phenolic resin adhesive of colour stable in being selected from least one layer of organizing down, this group is made up of and the following: binding agent-abrasive material, gum material coating, pre-size coat, making coating, size coat and super size coat.
In the embodiment that comprises size coat and super size coat, as shown in fig. 1, abrasive substance can be used discretely by gravity, electrostatic precipitation, airflow, or is used as slurry with the polyurethane adhesives composition.Make coating 20 abrasive substance is bonded on the surface of this substrate, and can form by flooding this support substrate with the phenolic resin adhesive that does not have abrasive grain.
In the embodiment of Fig. 2, support substrate can be with a kind of resin/abrasive slurries that comprises abrasive substance and resin combination flood so that form a binding agent/abrasive material 32, this resin combination comprises a kind of phenolic resin adhesive and a kind of colour stabilizer.
In one embodiment, a kind of method of making the abrasive article of colour stable comprises: with a kind of resole with comprise that a kind of colour stabilizer of at least a acrylate carries out blend to form a kind of soluble phenolic resin composite; A plurality of abrasive particles are contacted with this soluble phenolic resin composite; And this soluble phenolic resin composite is solidified to produce the abrasive product of this colour stable.Except the abrasive material of above-mentioned these coatings, the abrasive article of the colour stable that is formed by this method comprises for example structurized abrasive material and agglutinating abrasive material.
About structurized abrasive material, by any article that form in those technology that are known in the art, wherein the structure of abrasive material was shaped before solidifying.This type of technology comprises for example embossing technology.In one embodiment, for example a kind of mixture of phenolic resin adhesive, acrylate colour stabilizer, optional tinting material and abrasive grain can contact with a backing and a means of production, and wherein this mixture is bonded on the surface of this backing.Therefore formed abrasive construction, these structures have the shape of the internal surface of means of production.
An agglutinating abrasive article can form by preparing a kind of coacervate, and this coacervate comprises phenolic resin adhesive, acrylate colour stabilizer, optional tinting material and abrasive grain.Thereby use any in the techniques known in the art that this coacervate is shaped then and prepare a kind of agglutinating abrasive material.Be used to prepare the suitable technology of agglutinating abrasive material at 5,738,696 of for example Wu; People's such as Wu 5,738,697; And people's such as Bright 6,679,758 U.S. Patent numbers; And further be illustrated among the U.S. Patent Publication No. 2003/0192258A1 of Simon, these each full contents are combined in this by reference.
Grind a workpiece surface on the workpiece surface to remove a part of this workpiece surface by being applied at a kind of abrasive article that grinds in the motion colour stable.
Phenolic resin adhesive
The typical resol of Shi Yonging is resole in the present invention, and it is from phenol: formaldehyde be about 1: 1 to about 1: 3 mole mol ratio and phenol: alkali metal hydroxide is to obtain to the phenol of about 100: 1 mol ratio and the alkali metal hydroxide catalyzed reaction of formaldehyde in about 1: 1.The color of the resol of this type of resole or base catalysis is stablized by adding one or more acrylate.The Durez Varcum resin of being made by Durez Corporation is for No. 94908 to be used as a kind of based on example water, the single-stage liquid phenolic resin of binding agent.Other examples are provided in the following table 1.
Table 1: phenolic resin adhesive
The resin code Retailer
HRJ15881 SI
HRJ15993 SI
HRJ16051 SI
94-908 Durez
13537 Hexion
29-777 Durez
29-778 Durez
43575 Durez
5408 GP
5410 GP
29-382 Durez
80-5080A Ardin
80-5078 Ardin
80-5046A Ardin
Colour stabilizer
Be used for colour stabilizer of the present invention and comprise acrylate.The example of acrylate comprises ethyl propenoate, epoxy acrylate, five acrylate (pentacrylate) and Viscoat 295 (TMPTA).Depend on other components that exist in the prescription, the optimum quantity of the acrylate that exists in binder formula can change.In certain embodiments, the per-cent of acrylate resin can be by the weight of resol between about 2% and about 60%, by the weight of resol between about 5% and about 60%, by the weight of resol between about 10% and about 60% or by the weight of resol between about 7% and about 15%.
For example, comprise that at the resol prescription in a plurality of embodiments of superoxide or ultraviolet photosensitive initiator, as described further below, acrylate preferably exists with bigger per-cent, as by weight between about 10% and about 60%.Acrylate resin can with a plurality of embodiments of reactive modified phenolic resin in, acrylic acid per-cent can be by weight between about 5% and about 60%.
In one embodiment, colour stabilizer is one or more acrylate resins with high functionality of a plurality of acrylic acid groups (as five acrylate and Viscoat 295 (TMPTA)).Other resins that are fit to comprise methyl lactate, ethyl lactate, lactic acid n-propyl ester, n-Butyl lactate, epoxy acrylate and 2-ethylhexyl lactate.
In another embodiment, these one or more acrylate resins are a kind of water soluble resins, as the TMPTA of ethoxylation.As described in this, term " water miscible " is meant in water consolute.In another embodiment, these one or more acrylate resins are not water miscible.Insoluble acrylate resin can exist with the value between about 2% to about 15% by weight.In some embodiments, composition further comprises a kind of cosolvent, as ethylene glycol.Can randomly can add vitamin-E and the C of weight between 1% and 20% by resin.
It is believed that multiple acrylate given colour stability by react (they otherwise can oxidation and form dark quinine structure) with the phenol oxyradical for resol.Reaction 1 and 2 representatives when do not have acrylate in the resol, it is believed that can generation an example of mechanism, and react 3 replacement schemes having represented the reaction 2 that when having acrylate, takes place.
In the reaction 1, phenol is in the alkaline medium intermediate ionization, thereby formed phenol ion and a kind of corresponding phenol oxyradical resonance structure.
Figure BDA0000074044990000061
In the reaction 2, the phenol oxyradical has experienced quick oxidation in alkali, thereby has formed a kind of quinone structure of dark color.
Figure BDA0000074044990000071
In the reaction 3, Viscoat 295 and phenol oxygen free radical reaction have been prevented the formation of dark quinine part, thereby have obtained a kind of resin of colour stable.Acrylic ester repeat units also has been indicated as this polymkeric substance to the combination in the network of resol and has given toughness.
Figure BDA0000074044990000072
Tinting material
This abrasive product can comprise a kind of tinting material, for example dyestuff or pigment.Generally, the part of this tinting material can be to see through the solidified resin and visible.In some embodiments, the part of tinting material be included in this solidified resin, in a kind of optional support substrate and/or in the coating between this optional support substrate and this solidified resin.In a plurality of specific embodiments, this tinting material can comprise organic multi-ring dye, organic monoazo-dyes, organic diazotizing dyes, organometallic complex, mineral dye (as metal oxide or complex compound).Dyestuff can be purple cyclic ketones, anthraquinone, azoic dyestuff complex compound and thioindigo.
Fluorescent colorant is dyestuff or the pigment that comprises the fluorescence organic molecule.The detailed description of fluorescent colorant can be at Zollinger, H., " Color Chemistry:Synthesis, Properties, and Applications of organic Dyes and Pigments ", 2 NdEd., VCH, New York finds in 1991, and it is all taught content and is combined in this by reference.As used in this, fluorescent colorant for example can be: Xanthene, thioxanthene, fluorenes (fluorescein for example, basic rhodamine, eosin, phloxine, the soluble fluorescent Huang, amber essence (succineins), asccharin (sacchareins), red basic dyestuff (rosamines), and sulfuric acid closes rhodol), naphthylamines, naphthalimide, aphtholactam (naphtholactam), azalactones, methyne oxazine, thiazine, chromene, tonka bean camphor, keto-amine, anthraquinone, iso-violanthrone, anthrapyridone, pyramine (pyranine), pyrazolone, benzothiazine perylene, or thioindigo.More preferably, fluorescent colorant is to select group down, and this group is made up of and the following: Xanthene, thioxanthene, cumarone, tonka bean camphor, keto-amine, anthraquinone, iso-violanthrone, anthrapyridone, pyramine, pyrazolone, benzothiazole, thioindigo and fluorenes.Most preferably, this fluorescent colorant is thioxanthene or thioxanthene.
It will be appreciated by the skilled addressee that for many commercially available tinting materials, in a classification the independent derivative of particular chemical structure (for example thioxanthene derivative) may not be disclose obtainable.Therefore, specific fluorescent colorant is called with Colour Index (C.I.) name typically, as at " Colour Index International " 4 ThEd.American Association of Textile Chemists and Colorists, Research Triangle Park, NC, defined in 2002.Colour Index exists on the net Www.colour-index.orgAlso be obtainable.Whole contents of teaching of Colour Index are combined in this by reference.
The example of preferred fluorescent colorant comprises C.I. solvent orange 63 (Hostasol Red GG, Hoechst AG, Frankfurt, Germany), C.I. solvent yellow 98 (Hostasol Yellow 3G, Hoechst AG, Frankfurt, Germany) and C.I. solvent orange 118 (FL orange SFR, Keystone Aniline Corporation, Chicago, Illinois).
Operable tinting material amount depends on the details of desired use, the feature of tinting material, other components in the composition, or the like.Those of ordinary skills will understand how to go to judge these details so that determine amount at a kind of tinting material of concrete purposes.Typically, the amount of tinting material will be a weight fraction of whole compositions, and this weight fraction is between about 0.01% and about 2%, more preferably between about 0.05% and about 0.5% and most preferably about 0.2%.
In a plurality of specific embodiments, tinting material is the tinting material of red, orange, yellow, green, blue, Indigo or purple.In a plurality of specific embodiments, tinting material is a fluorescence, for example is fluorescein, fluorescent orange (flame orange), fluorescent yellow, fluorescence green or similar color.
Tinting material can be used to indicate abrasive product, for example is used for commercial mark, is used for using and indicates (as wet, dried, timber, metal or similar content) or be used to indicate gravel size or similar content.
Abrasive grain
Abrasive grain can comprise following particulate any or a kind of combination, these particles are including, but not limited to silica, the oxide compound of aluminum oxide (fused or agglomerating), zirconium white, zirconium white/aluminum oxide, silicon carbide, garnet, diamond, cubic boron nitride (CBN), silicon nitride, cerium dioxide, titanium dioxide, TiB2, norbide, stannic oxide, wolfram varbide, titanium carbide, ferric oxide, chromic oxide, flint and silicon carbide.For example, these abrasive grains can be selected from down group, and this group is made up of and the following: the alumina zirconia of silica, aluminum oxide, zirconium white, silicon carbide, silicon nitride, boron nitride, garnet, diamond, congruent melting, cerium dioxide, TiB2, norbide, flint, silicon carbide, aluminum oxynitride and their blend.In some instances, can use the intensive abrasive grain of mainly forming by αYang Hualv and/or gamma-alumina.
These abrasive grains can also comprise the abrasive agglomerate particle, and it is also referred to as the abrasive grain of reunion.The abrasive agglomerate particle comprises the abrasive particle that is sticked together by the particle bond agent material.Be present in these abrasive particles in the abrasive agglomerate particle and can comprise one or more of the following abrasive material that becomes known in abrasive tool, using, for example as oxide-based, silicon carbide, garnet, diamond, cubic boron nitride (CBN), silicon nitride, cerium dioxide, titanium dioxide, TiB2, norbide, stannic oxide, wolfram varbide, titanium carbide, ferric oxide, chromic oxide, flint, silicon carbide and their the multiple combination of: silica, aluminum oxide (fused or agglomerating), zirconium white, zirconium white/aluminum oxide.Abrasive particle can have virtually any size or shape.The abrasive agglomerate particle can stick together by the particle binder material, this particle binder material for example as metal, organically or a kind of combination of vitreous material or this class material.Further illustrate in people's such as Knapp the U.S. Patent number 6,797,023 and be suitable for abrasive agglomerate particle of the present invention, the full content of this patent is combined in this by reference.
The example that these abrasive grains can also have one or more special these special shapes of shape comprises: bar-shaped, trilateral, pyramid, taper, solid sphere, hollow ball shape and analogous shape.Alternately, these abrasive grains can be irregular shapings.
Typically, these abrasive grains have and are not more than 2000 microns mean particle size, for example as being not more than about 1500 microns.In another example, abrasive grain is to be not more than about 750 microns, as is not more than about 350 microns.In some embodiments, abrasive grain can be at least 0.1 micron, as from about 0.1 micron to about 1500 microns, and more typically is from about 0.1 micron to about 200 microns, or from about 1 micron to about 100 microns.The granularity of these abrasive grains typically is indicated as being the longest dimension of this abrasive grain.Generally speaking, there is a particle size distribution.In some instances, size-grade distribution is strict control.
Support member/backing
Abrasive article can comprise a kind of support member or backing.Backing can be flexible or inflexible.Backing can be made by any amount of differing materials, and they are included in the manufacturing of abrasive material of coating routinely as those of backing.The backing that is fit to can comprise: polymeric film (for example, the film of primer), as polyolefin film (for example, polypropylene comprises Biaially oriented polypropylene), polyester film (for example, polyethylene terephthalate), polyamide membrane or cellulose ester membrane; Tinsel; Mesh material; Foam (for example, natural sponge material or polyurethane foam); Cloth (for example, cloth weaving, nonwoven, napping, linear slit bonded or quilting or that make by fiber that comprises polyester, nylon, silk, cotton, polyester-cotton blend or regenerated fiber or yarn); Paper; Vulcanized fiber paper; Rigidified rubber; Vulcanized fiber; Nonwoven material; The backing of their processing; Perhaps their arbitrary combination.
Backing can have at least one in soaker, pre-sizing material layer or the gum bed of material.The purpose of these layers is typically in order to seal this backing or in order to protect yarn or the fiber in the backing.If this backing is a kind of cloth material, so typically use at least one in these layers.In the front of backing also or the back side add the surface that pre-sizing material layer or the gum bed of material can produce " more level and smooth " in addition.Can also use other optional layer (for example, tie layers known in the art; Referring to people's such as Stoetzel U.S. Patent number 5,700,302, its full content is combined in this by reference).
In some embodiments, these abrasive articles are intended to as fine grinding material and therefore can preferably a kind of very level and smooth surface.The example of this smooth-flat-surface backing comprises paper, the plastics film of meticulous calendering or the fabric with smooth-flat-surface coating.
Backing can have anlistatig characteristic.Add antistatic material and can reduce abrasive article accumulation electrostatic trend when the material of polishing timber or similar wood.Additional detail about antistatic backing and backing processing can be at people's such as for example Buchanan U.S. Patent number 5,108,463; People's such as Buchanan 5,137,542; 5,328,716 of Buchanan; And people such as Buchanan 5,560,753 in find, these full content is combined in this by reference.
Backing can comprise a kind of fibrous, thermoplastics of strengthening, for example as U.S. Patent number 5 people such as Stout, 417, illustrate in 726, perhaps comprise a kind ofly do not interrupt, jointless band spare, for example as U.S. Patent number 5,573 people such as Benedict, illustrate in 619 that these full content is combined in this by reference.Similarly, backing can comprise a kind of substrate of polymer-type, and this substrate has from wherein outstanding hook link, and for example as what illustrate in people's such as Chesley U.S. Patent number 5,505,747, its full content is combined in this by reference.Similarly, backing can comprise a kind of endless fabric, and for example as what illustrate in people's such as Follett U.S. Patent number 5,565,011, its full content is combined in this by reference.
Other components
Abrasive article of the present invention can also comprise the component that other are different, as curing additive class, non-reacted thermoplastic resin class, weighting agent class, grinding aid class; And other additive kinds.
In some embodiments, this abrasive article comprises a kind of curing additive, and as a kind of photoinitiator, it produces free radical when being exposed to radiation (for example UV radiation).Free radical generation material can comprise organic peroxide, azo compound class, quinones, diphenylketone class, nitroso compound class, acryl halogenide class, hydrazone class, sulfhydryl compound class, pyrylium compound class, three acyl group imidazoles, diimidazole class, chlorine alkyl triazines, st-yrax ethers, benzil ketals class, thioxanthene ketone and acetophenones, comprises the derivative of this compounds.Among these, the most frequently used photoinitiator is: benzil ketals is as 2,2-dimethoxy-2-phenyl methyl phenyl ketone ( Can obtain from Ciba Specialty Chemicals under 651 trade marks) and acetophenone derivs as 2,2-diethoxy acetophenone (" DEAP ", commercially available from First Chemical Corporation), 2-hydroxy-2-methyl-1-phenyl-propane-1-ketone (" HMPP ",
Figure BDA0000074044990000111
Can be commercially available under 1173 trade marks from Ciba Specialty Chemicals), 2-phenmethyl-2-N, N-dimethylamino-1-(4-morpholino phenyl)-1-butanone (
Figure BDA0000074044990000112
Can be commercially available under 369 trade marks) from Ciba Specialty Chemicals; And 2-methyl isophthalic acid-(4-(methylthio group) phenyl)-2-morpholino propane-1-ketone (
Figure BDA0000074044990000113
Can obtain from Ciba Specialty Chemicals under 907 trade marks).
These abrasive articles can comprise a kind of non-reacted thermoplastic resin, for example as polypropylene glycol, polyoxyethylene glycol and polyoxypropylene-polyoxyethylene block copolymer.
The weighting agent class comprises organic filler, inorganic filler and nano-filled dose.The example of the weighting agent that is fit to is including, but not limited to metal carbonate, as lime carbonate and yellow soda ash; Silica is as quartz, granulated glass sphere, glass envelope; Silicate is as talcum, clay, calcium metasilicate; Metal sulfate is as barium sulfate, calcium sulfate, Tai-Ace S 150; Metal oxide is as calcium oxide, aluminum oxide; Aluminum trihydrate, and their multiple combination.
These abrasive articles can comprise that a kind of grinding aid is to increase mill efficiency and stock removal rate.Useful grinding aid can be inorganic, as a kind of halogen, and for example sodium cryolite and potassium tetrafluoroborate; Or organic bases, as chlorating wax, for example polyvinyl chloride.In a specific embodiment, abrasive article comprises sodium aluminum fluoride and potassium tetrafluoroborate, and their size range is from about 1 micron to about 80 microns, the most typically from about 5 microns to about 30 microns.A concentration of making grinding aid in the coating is to be not more than about 50wt% generally, for example the concentration of grinding aid is normally from about 0.1wt% to 50wt%, and typically the most about 10wt% to 30wt% (all wt% are based on the weight of the making coating that comprises abrasive grain).
The example of additional additive comprises: the coupling agent class, as silane coupling agent (for example A-174 and the A-1100 that can obtain from Osi Specialties Inc.), titanate and zircoaluminate; The static inhibitor class is as graphite, carbon black and analogue; Suspending agent, as fumed silica, for example Cab-O-Sil M5, Aerosil 200; Anti-load agent class is as Zinic stearas and calcium stearate; The lubricant class is as wax, PTFE powder, polyoxyethylene glycol, polypropylene glycol and polysiloxane; The wetting agent class; Pigment class; The dispersion agent class; And defoamer class.
Example
Now will present invention is described further and definitely by following example, these examples are not intended to limit.
Example 1:
Four kinds of phenol resin compositions have been prepared.Each composition has comprised the component shown in the table 2.
Table 2
Material LBS Per-cent
Resin PF Prefere 80-5080A 21.0 20.9％
Pigment Elcom orange SK 2.8 2.8％
Nalco 2341 defoamers 0.1 0.1％
Solmad?Daxad?11 1.7 1.7％
Solmod?Cab-o-sil 0.1 0.1％
Weighting agent Solvay Type A KBF4 64.5 64.3％
TMPTA 2.3 2.3％
Water 7.9 7.9％
100.3 100.0％
In addition, the different acrylate of prescription 2 to 4 each self-contained same amount.Following table 3 is illustrated in the amount of the acrylate that exists in each prescription.
Table 3
15
Illustrated in the table, the composition that comprises these acrylate is exposed in solidification process and adds when pining for, to the resistance that darkened.Particularly, find that five acrylate and TMPTA are the most effective stablizing on the color of resol.
Equivalent
Though by the present invention having been carried out concrete displaying and explanation with reference to exemplary of the present invention, but those skilled in the art are to be understood that, under the prerequisite that does not deviate from the scope of the present invention that appending claims contains, can make different changes in form and details to these embodiments.

Claims (15)

1. the abrasive article of a colour stable comprises:
A) a kind of binding agent, this binding agent comprises a kind of resol;
B) a kind of colour stabilizer, this colour stabilizer comprises at least a acrylate; And
C) abrasive grain.
2. the abrasive article of colour stable as claimed in claim 1, wherein this resol is a kind of resole.
3. the abrasive article of colour stable as claimed in claim 1, wherein this colour stabilizer is to exist with the value between about 2% and about 60% by weight.
4. the abrasive article of colour stable as claimed in claim 1, wherein this colour stabilizer is to exist with the value between about 7% and about 15% by weight.
5. the abrasive article of colour stable as claimed in claim 1, wherein this colour stabilizer is a kind of acrylate that is selected from down group, and this group is made up of and the following: ethyl propenoate, epoxy acrylate, five acrylate and Viscoat 295 (TMPTA).
6. the abrasive article of colour stable as claimed in claim 1, wherein this colour stabilizer comprises acrylate, the Viscoat 295 of ethoxylation.
7. the abrasive article of colour stable as claimed in claim 6 further comprises a kind of ethylene glycol cosolvent.
8. the abrasive article of colour stable as claimed in claim 1, wherein this colour stabilizer comprises the insoluble acrylate resin of a kind of water, this acrylate resin is to exist with the value between about 2% and about 15% by weight.
9. the abrasive article of colour stable as claimed in claim 5, wherein this acrylate is to exist with the value between about 5% and about 60% by weight.
10. the abrasive article of colour stable as claimed in claim 5, wherein this acrylate is to exist with the value between about 10% and about 60% by weight.
11. the abrasive article of colour stable as claimed in claim 5, wherein this acrylate resin can react with this resol.
12. the abrasive article of colour stable as claimed in claim 1 with respect to the same article after about 235 solidify about 2 hours down, does not visually have appreciable colour-change after about 235 °F solidify about 8 hours down.
13. the abrasive article of colour stable as claimed in claim 1, wherein this phenolic resin adhesive and colour stabilizer are to be present at least one layer that is selected from down group, and this group is made up of and the following: binding agent-abrasive material, gum material coating, pre-size coat, making coating, size coat and super size coat.
14. a method of making the abrasive article of colour stable, this method may further comprise the steps:
A) with a kind of resole with comprise that a kind of colour stabilizer of at least a acrylate carries out blend to form a kind of soluble phenolic resin composite;
B) a plurality of abrasive particles are contacted with this soluble phenolic resin composite; And
C) this soluble phenolic resin composite is solidified to produce the abrasive article of this colour stable.
15. a method that is used for the grinding work-piece surface, this method are included in a kind of abrasive article that grinds in the motion colour stable and are applied on the workpiece surface to remove a part of this workpiece surface, this abrasive product comprises:
A) a kind of binding agent, this binding agent comprises a kind of resol;
B) a kind of colour stabilizer, this colour stabilizer comprises at least a acrylate; And
C) abrasive grain.
CN200980153958.1A 2008-11-17 2009-11-16 Acrylate color-stabilized phenolic bound abrasive products and methods for making same Expired - Fee Related CN102272258B (en)

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