CN101062570A - Low water absorption ratio phenolic paper laminate and preparation method and usage thereof - Google Patents
Low water absorption ratio phenolic paper laminate and preparation method and usage thereof Download PDFInfo
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- CN101062570A CN101062570A CN 200610011821 CN200610011821A CN101062570A CN 101062570 A CN101062570 A CN 101062570A CN 200610011821 CN200610011821 CN 200610011821 CN 200610011821 A CN200610011821 A CN 200610011821A CN 101062570 A CN101062570 A CN 101062570A
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Abstract
The invention relates to the making of low water sucking ratio phenolic laminate. It uses vertical and horizontal combined dipping paper process, using modified alkyd resin as isolation dipping resin whose molecule quantity should be 450-600, compressing several pre dipping papers in this resin to form low water sucking ratio phenol resion laminate, with improved cross linking density, and significantly improved processing flexibility. After dipping in water for 24 hours, the isolation resistance reaches standard 5X1010Omega of IEC893-3-2(1993), with storage stability and mechanical and electrical features. It is low in media electricity consumption, stable in chemical resistance, quick solidification, without bubble. It applies to all kinds of mechanical machining.
Description
Technical field
The present invention relates to low water absorption ratio phenolic paper laminate and its production and use.
Background technology
In recent years, along with the continuous expansion of family expenses and industrial laminate market scale,, be that the market demand of phenolic sheet of reinforcing material is increasing still with cotton and glass fabric no matter be to be reinforcing material with the paper.
Phenolic resins is to find at first and a kind of synthetic resin of suitability for industrialized production at first, it has, and raw material sources are extensive, price is low, mechanical strength is higher, hard wear resistant, heat-resisting, fire-retardant, anti-most of solvents, and advantage such as electrical insulation properties is good, so far, the impregnating resin of using in actual layer platen manufacturing process still mainly adopts phenolic resin system.As the important kind of a class of electrical insulating material, the phenolic resins laminated product is widely used in motor, electrical equipment and the electronics industry as the structural material of electric insulation, remains a kind of output maximum in the electrical laminated goods of China at present.Its manufacture method is to adopt the phenolic resins of base catalysis and epoxy resin to mix mostly, and fabrics such as impregnate paper, cotton and glass fabric are dried and obtained prepreg then, and goods are made in last lamination hot pressing.
Phenolic resins exists that curing reaction speed is fast, and bin stability is poor, brings certain difficulty for lamination and compression molding.In addition, the toughness of material behind the phenolic resin curing is relatively poor, causes the shock resistance of laminate relatively poor.Therefore, development good combination property, moulding processability be new modified phenolic resin preferably, for reducing environmental pollution, reducing significantly to the influence of health of human body, also is the important research field and the direction of present phenolic resins.
Ratio phenolic paper laminate is a commercial Application phenolic aldehyde laminated product the most widely, still, for many years since the immersion of such laminated product after 24 hours insulaion resistance little, have only 10
7～10
8Ω is with the index request 5 * 10 of international electrical engineering standard " electrician uses thermosetting resin industry rigid laminate standard " [IEC893-3-2 (1993)]
10It is bigger that Ω differs, and influences such products export.Simultaneously also because immersion back insulaion resistance is lower, cause the electrical equipment cisco unity malfunction, not only manufacturing and the installation to electric equipment brings adverse effect, and often reduce the normal operation and the working life of electrical equipment, therefore, how to improve insulaion resistance after the immersion of ratio phenolic paper laminate, become an important subject and the problem demanding prompt solution of the electrical laminated plate of China in making.
Carried out many research at this problem Chinese scholar and researcher, the insulaion resistance after the ratio phenolic paper laminate immersion is subjected to influence of various factors.At present, commonplace result of study thinks that main factor is that the resin solidification crosslink density is low, and the globality of laminate is poor; Next is that the polarity of resin cured matter is big, contains than multiple polar group, as hydroxyl, is subjected to hydrogen bond action to be easy to combine with water.For this reason, a large amount of research has been carried out in synthesis and structure modification around phenolic resins, late 1980s, Liang Zhen, Cai Xingxian etc. have reported research [the insulating materials communication of THETIC phenol-formaldehyde resin modified and laminate thereof, 1989, (5): 1-7], so as to improving and improve the moulding processability and the laminate adhesive property of phenolic resins; People such as Gu Yi adopt the benzoxazine phenol-formaldehyde resin modified to improve hear resistance and processing characteristics [engineering plastics application, 1995,23 (3): 1-5; Engineering plastics are used, and 1998,26 (12): 1-3; Thermosetting resin, 1999, (1): 20-23]; People such as Tang Anbin are realizing under the phenolic resin system performance prerequisite, adopt epoxy resin E44 phenol-formaldehyde resin modified to obtain [the insulating materials communication of certain effect, 1996, (3): 1-3], people such as Yang Guang adopt the structure and the performance of aniline derivatives substance modified phenolic resin, have made the higher phenol-formaldehyde resin modified of a kind of molecular weight, and have electrical insulation capability [composite journal preferably, 2003,20 (3): 52-56].Sum up and get up to mainly contain to take acid catalysis to replace the condensation reaction of ammoniacal liquor base catalysis phenol and formaldehyde; Adopt latent curing agent to increase resin dipping and state of cure, improve the globality of laminate, also have to improve and replace reinforcing material paper.Though above method has certain effect to improving phenolic sheet immersion back insulaion resistance, resistance reaches 10 after the immersion of indivedual ways
10The Ω quantity levels, still, the method that is adopted or be complex process, or be that the cost of raw material that adopts increases, or even toxicity increases, and brings harmful effect for environment and operating personnel.
Summary of the invention
One of purpose of the present invention provides utilization and at room temperature has excellent storage stability, and curing rate is fast, is suitable for flooding the low water absorption ratio phenolic paper laminate that viscosity is low, high light yellow, the transparent phenolic resins liquid of dipping property obtains of all kinds paper; Resin in this low water absorption ratio phenolic paper laminate not only resin structure middle crosslink density is improved, and low water absorption ratio phenolic paper laminate processing toughness be improved significantly.
Two of purpose of the present invention provides a kind of preparation method of low water absorption ratio phenolic paper laminate.
Three of purpose of the present invention provides the purposes of low water absorption ratio phenolic paper laminate.
Low water absorption ratio phenolic paper laminate of the present invention is synthetic by many preimpregnation paper hot pressing that are impregnated with phenol-formaldehyde resin modified, and wherein the component of phenol-formaldehyde resin modified comprises: organic phenol monomer of band straight-chain alkyl, phenolic resins, condensation catalyst, diluent; Wherein the organic phenol monomer with straight-chain alkyl accounts for 15～20wt%, and phenolic resins accounts for 25～30wt%, and condensation catalyst accounts for 2～5wt%, and diluent accounts for 45～50wt% etc.In the use of phenol-formaldehyde resin modified, in phenol-formaldehyde resin modified, can add an amount of pigment, the pigment addition is about about 1～2wt% of phenol-formaldehyde resin modified, is used to prepare the sheet material of different colours.
Described pigment comprises iron oxide red, cadmium yellow, phthalein viridescent etc.
The preparation method of low water absorption ratio phenolic paper laminate of the present invention adopts vertical and the process route horizontal combined impregnate paper first, and process route as shown in Figure 1.Among the figure 1 is paper roll, and 2 and 4 are respectively vertical and horizontal steeping vat, and 3 and 5 are respectively vertical and horizontal baking oven, and 6 is shear.
The preparation method of low water absorption ratio phenolic paper laminate of the present invention is:
(1). by vertical steeping vat dipping phenol-formaldehyde resin modified, the brown paper impregnating speed is 10～20 meters/minute with brown paper;
(2). the brown paper that step (1) is impregnated with phenol-formaldehyde resin modified enters and carries out drying in the vertical baking oven and handle, and the bake out temperature scope of vertical baking oven is 70～90 ℃, and the brown paper impregnating speed is 10～20 meters/minute;
(3). the brown paper of the oven dry that step (2) is obtained floods phenol-formaldehyde resin modified once more by horizontal steeping vat.
(4). the brown paper that step (3) is impregnated with phenol-formaldehyde resin modified enters and carries out drying in the horizontal baking oven and handle, and the bake out temperature scope of horizontal baking oven is 80～120 ℃;
(5). the dipping of the oven dry that step (4) is obtained the preimpregnation paper of phenol-formaldehyde resin modified, claim prepreg again, by shear on request size cut out;
(6). according to the Thickness Design requirement of sheet material, many preimpregnation quires that step (5) is obtained are placed on the mould, and the hot press of packing into carries out hot-forming processing, briquetting pressure 80～100kg/cm
2, 150～160 ℃ of forming temperatures, the selected and setting of each hot-forming time is generally carried out 8～10 minutes hot pressing with every millimeter thickness of slab by the thickness of slab requirement.Because preimpregnation paper is the brown paper that contains resin adhesive, be in semi-cured state this moment, carries out hot pressing again and finish final curing.
Modified alkyd resin for laminated board of the present invention does not adopt phenol as the synthetic primary raw material of resin, substantially the poisonous and hazardous organic volatile material of discharging in atmospheric environment can not produce obvious influence to the health of human body of production line operation personnel and factory's surrounding resident.
The preparation method of modified alkyd resin for laminated board of the present invention: under nitrogen protection, at first will mix by 1: 1.2～1.4 mol ratio with the aldehydes monomer with organic phenol monomer of straight-chain alkyl, under 70～90 ℃ of temperature, add thermal agitation, press 2～7% of phenolic monomers weight and add catalyst, under catalyst action, generate phenolic resins by condensation reaction; Then, decompression distillation collect to remove the moisture content that dereaction produces, and is cooled to 40～50 ℃, and diluent is mixed by about 1: 1 weight ratio with above-mentioned phenolic resins, and stirring obtains homogeneous phase, transparent modified alkyd resin for laminated board.GPC measures the number-average molecular weight of phenol-formaldehyde resin modified between 450～600.
Organic phenol monomer of band straight-chain alkyl of the present invention, wherein the straight-chain alkyl structural formula is :-C
nH
2n+1, or-C
nH
2n-1, can have unsaturated double-bond, its carbon number n=6～18, organic phenol monomer is hexyl phenol, nonyl phenol, octyl phenol, 2,4-DI-tert-butylphenol compounds, 2,6-DI-tert-butylphenol compounds, dodecylphenol or anacardol etc., preferred nonyl phenol, anacardol.
Aldehydes monomer of the present invention is formaldehyde, acetaldehyde or methacrylaldehyde.
Condensation catalyst of the present invention is ammoniacal liquor, NaOH, barium hydroxide or magnesium hydroxide etc.Its addition is 2～7% of a phenolic monomers weight.
Diluent of the present invention is alcohol, methyl alcohol, toluene, acetone or their arbitrary proportion mixture etc.
Laminate paper of the present invention is general brown paper.
Low water absorption ratio phenolic paper laminate of the present invention is mainly used in machinery, electric insulation field, comprises machinery, electric insulation laminate, is adapted to various machining modes.
Low water absorption ratio phenolic paper laminate of the present invention reaches the index request 5 * 10 of IEC893-3-2 (1993) at the insulaion resistance of immersion after 24 hours
10Ω, laminated paper board have that good mechanical performance, electrical strength height, dielectric loss are low, chemical-resistant stability, solidify soon, characteristics such as thick-layer is non-foaming.
Description of drawings
Fig. 1. the process route view of low water absorption ratio phenolic paper laminate of the present invention.
Reference numeral
1. paper roll 2. vertical steeping vat 3. vertical baking ovens
4. horizontal steeping vat 5. horizontal baking oven 6. shears
The specific embodiment
Embodiment 1
With 180 weight portion hexyl phenol, under the nitrogen filled protection state, add 37 parts by weight of formaldehyde, and add the barium hydroxide of 2 weight portions, under agitation be heated to 80 ℃, stirring reaction 5 hours, reaction solution is pellucidity; Measure gel time at 3～4min, decompression distillation, collect and remove the moisture content that dereaction produces, measure the molecular resin amount between 450～600, be cooled to 40 ℃, add 200 weight portion alcohol, stirring reaction 1 hour obtains the phenol-formaldehyde resin modified of the homogeneous transparent of number-average molecular weight between 450～600.
According to the preparation were established of as shown in Figure 1 low water absorption ratio phenolic paper laminate, the preparation low water absorption ratio phenolic paper laminate.
(1). in a continuous manner brown paper is flooded phenol-formaldehyde resin modified by vertical steeping vat, the brown paper impregnating speed is 10～20 meters/minute;
(2). the brown paper that step (1) is impregnated with phenol-formaldehyde resin modified enters and carries out drying in the vertical baking oven and handled 10～20 minutes, and the bake out temperature scope of vertical baking oven is 70 ℃;
(3). the brown paper of the oven dry that step (2) is obtained floods phenol-formaldehyde resin modified again by horizontal steeping vat, and the brown paper impregnating speed is 10～20 meters/minute;
(4). the brown paper that step (3) is impregnated with phenol-formaldehyde resin modified enters and carries out drying in the horizontal baking oven and handled 10～20 minutes, and the bake out temperature scope of horizontal baking oven is 120 ℃;
(5). the dipping of the oven dry that step (4) is obtained the brown paper of phenol-formaldehyde resin modified, by shear on request size cut out;
(6). the preimpregnation quires that step (5) is obtained is placed on the mould, and the hot press of packing into carries out hot-forming processing, briquetting pressure 80kg/cm
2, 160 ℃ of forming temperatures carry out hot pressing with every millimeter thickness of slab by 8～10 minutes time, prepare the electrician and use ratio phenolic paper laminate.
With 180 weight portion nonyl phenols, under the nitrogen filled protection state, add 37 parts by weight of formaldehyde, and add the magnesium hydroxide of 2 weight portions, under agitation be heated to 80 ℃, stirring reaction 5 hours, reaction solution is pellucidity; Measure gel time at 3～4min, decompression distillation, collect and remove the moisture content that dereaction produces, measure the molecular resin amount and between 450～600, be cooled to 40 ℃, add 200 weight portion acetone, stirring reaction 1 hour obtains the phenol-formaldehyde resin modified of the homogeneous transparent of number-average molecular weight between 450～600.
According to the preparation were established of as shown in Figure 1 low water absorption ratio phenolic paper laminate, the preparation low water absorption ratio phenolic paper laminate.
(1). in a continuous manner brown paper is flooded phenol-formaldehyde resin modified by vertical steeping vat, the brown paper impregnating speed is 10～20 meters/minute;
(2). the brown paper that step (1) is impregnated with phenol-formaldehyde resin modified enters and carries out drying in the vertical baking oven and handled 10～20 minutes, and the bake out temperature scope of vertical baking oven is 90 ℃;
(3). the brown paper of the oven dry that step (2) is obtained floods phenol-formaldehyde resin modified again by horizontal steeping vat, and the brown paper impregnating speed is 10～20 meters/minute;
(4). the brown paper that step (3) is impregnated with phenol-formaldehyde resin modified enters and carries out drying in the horizontal baking oven and handled 10～20 minutes, and the bake out temperature scope of horizontal baking oven is 90 ℃;
(5). the dipping of the oven dry that step (4) is obtained the brown paper of phenol-formaldehyde resin modified, by shear on request size cut out;
(6). the preimpregnation quires that step (5) is obtained is placed on the mould, and the hot press of packing into carries out hot-forming processing, briquetting pressure 100kg/cm
2, 150 ℃ of forming temperatures carry out hot pressing with every millimeter thickness of slab by 8～10 minutes time, prepare the electrician and use ratio phenolic paper laminate.
With 300 parts by weight of cardanol, under the nitrogen filled protection state, add 40 weight portion acetaldehyde, and add the ammoniacal liquor of 5 weight portions, under agitation be heated to 80 ℃, stirring reaction 5 hours, reaction solution is pellucidity; Measure gel time at 3～4min, decompression distillation, collect and remove the moisture content that dereaction produces, measure the molecular resin amount between 450～600, be cooled to 40 ℃, add 320 weight portion methyl alcohol, stirring reaction 1 hour obtains the phenol-formaldehyde resin modified of the homogeneous transparent of number-average molecular weight between 450～600.
According to the preparation were established of as shown in Figure 1 low water absorption ratio phenolic paper laminate, the preparation low water absorption ratio phenolic paper laminate.
(1). in a continuous manner brown paper is flooded phenol-formaldehyde resin modified by vertical steeping vat, the brown paper impregnating speed is 10～20 meters/minute;
(2). the brown paper that step (1) is impregnated with phenol-formaldehyde resin modified enters and carries out drying in the vertical baking oven and handled 10～20 minutes, and the bake out temperature scope of vertical baking oven is 80 ℃;
(3). the brown paper of the oven dry that step (2) is obtained floods phenol-formaldehyde resin modified again by horizontal steeping vat, and the brown paper impregnating speed is 10～20 meters/minute;
(4). the brown paper that step (3) is impregnated with phenol-formaldehyde resin modified enters and carries out drying in the horizontal baking oven and handled 10～20 minutes, and the bake out temperature scope of horizontal baking oven is 100 ℃;
(5). the dipping of the oven dry that step (4) is obtained the brown paper of phenol-formaldehyde resin modified, by shear on request size cut out;
(6). the preimpregnation quires that step (5) is obtained is placed on the mould, and the hot press of packing into carries out hot-forming processing, briquetting pressure 80kg/cm
2, 160 ℃ of forming temperatures carry out hot pressing with every millimeter thickness of slab by 8～10 minutes time, prepare the electrician and use ratio phenolic paper laminate.
Embodiment 4
With 200 weight portions 2, the 4-DI-tert-butylphenol compounds under the nitrogen filled protection state, adds 37 parts by weight of formaldehyde, and adds the barium hydroxide of 2 weight portions, under agitation is heated to 80 ℃, stirring reaction 5 hours, and reaction solution is pellucidity; Measure gel time at 3～4min, decompression distillation, collect and remove the moisture content that dereaction produces, measure the molecular resin amount between 450～600, be cooled to 40 ℃, add 240 weight portion alcohol dilutions, stirring reaction 1 hour obtains the phenol-formaldehyde resin modified of the homogeneous transparent of number-average molecular weight between 450～600.
According to the preparation were established of as shown in Figure 1 low water absorption ratio phenolic paper laminate, the preparation low water absorption ratio phenolic paper laminate.
(1). in a continuous manner brown paper is flooded phenol-formaldehyde resin modified by vertical steeping vat, the brown paper impregnating speed is 10～20 meters/minute;
(2). the brown paper that step (1) is impregnated with phenol-formaldehyde resin modified enters and carries out drying in the vertical baking oven and handled 10～20 minutes, and the bake out temperature scope of vertical baking oven is 70 ℃;
(3). the brown paper of the oven dry that step (2) is obtained floods phenol-formaldehyde resin modified again by horizontal steeping vat, and the brown paper impregnating speed is 10～20 meters/minute;
(4). the brown paper that step (3) is impregnated with phenol-formaldehyde resin modified enters and carries out drying in the horizontal baking oven and handled 10～20 minutes, and the bake out temperature scope of horizontal baking oven is 120 ℃;
(5). the dipping of the oven dry that step (4) is obtained the brown paper of phenol-formaldehyde resin modified, by shear on request size cut out;
(6). the preimpregnation quires that step (5) is obtained is placed on the mould, and the hot press of packing into carries out hot-forming processing, briquetting pressure 80kg/cm
2, 160 ℃ of forming temperatures carry out hot pressing with every millimeter thickness of slab by 8～10 minutes time, prepare the electrician and use ratio phenolic paper laminate.
With 270 weight portion dodecylphenols, under the nitrogen filled protection state, add 40 parts by weight of formaldehyde, and add the ammoniacal liquor of 5 weight portions, under agitation be heated to 80 ℃, stirring reaction 5 hours, reaction solution is pellucidity; Measure gel time at 3～4min, decompression distillation, collect and remove the moisture content that dereaction produces, measure the molecular resin amount between 450～600, be cooled to 40 ℃, add 300 weight portion alcohol, stirring reaction 1 hour obtains the phenol-formaldehyde resin modified of the homogeneous transparent of number-average molecular weight between 450～600.
According to the preparation were established of as shown in Figure 1 low water absorption ratio phenolic paper laminate, the preparation low water absorption ratio phenolic paper laminate.
(1). in a continuous manner brown paper is flooded phenol-formaldehyde resin modified by vertical steeping vat, the brown paper impregnating speed is 10～20 meters/minute;
(2). the brown paper that step (1) is impregnated with phenol-formaldehyde resin modified enters and carries out drying in the vertical baking oven and handled 10～20 minutes, and the bake out temperature scope of vertical baking oven is 80 ℃;
(3). the brown paper of the oven dry that step (2) is obtained floods phenol-formaldehyde resin modified again by horizontal steeping vat, and the brown paper impregnating speed is 10～20 meters/minute;
(4). the brown paper that step (3) is impregnated with phenol-formaldehyde resin modified enters and carries out drying in the horizontal baking oven and handled 10～20 minutes, and the bake out temperature scope of horizontal baking oven is 100 ℃;
(5). the dipping of the oven dry that step (4) is obtained the brown paper of phenol-formaldehyde resin modified, by shear on request size cut out;
(6). the preimpregnation quires that step (5) is obtained is placed on the mould, and the hot press of packing into carries out hot-forming processing, briquetting pressure 80kg/cm
2, 160 ℃ of forming temperatures carry out hot pressing with every millimeter thickness of slab by 8～10 minutes time, prepare the electrician and use ratio phenolic paper laminate.
Claims (10)
1. low water absorption ratio phenolic paper laminate, it is characterized in that: this low water absorption ratio phenolic paper laminate is synthetic by many preimpregnation paper hot pressing that are impregnated with phenol-formaldehyde resin modified, wherein the component of phenol-formaldehyde resin modified comprises: organic phenol monomer of band straight-chain alkyl, phenolic resins, condensation catalyst, diluent; Wherein the organic phenol monomer with straight-chain alkyl accounts for 15～20wt%, and phenolic resins accounts for 25～30wt%, and condensation catalyst accounts for 2～5wt%, and diluent accounts for 45～50wt%.
2. low water absorption ratio phenolic paper laminate according to claim 1 is characterized in that: the number-average molecular weight of described phenol-formaldehyde resin modified is between 450～600.
3. low water absorption ratio phenolic paper laminate according to claim 1 and 2, it is characterized in that, described phenol-formaldehyde resin modified is prepared by following method: under nitrogen protection, at first will mix by 1: 1.2～1.4 mol ratio with the aldehydes monomer with organic phenol monomer of straight-chain alkyl, under 70～90 ℃ of temperature, add thermal agitation, press 2～7% of phenolic monomers weight and add catalyst, under catalyst action, generate phenolic resins by condensation reaction; Then, decompression distillation collect to remove the moisture content that dereaction produces, and cooling mixes diluent with above-mentioned phenolic resins, and stirring obtains homogeneous phase, transparent modified alkyd resin for laminated board.
4. low water absorption ratio phenolic paper laminate according to claim 1 is characterized in that: organic phenol monomer of described band straight-chain alkyl, wherein the straight-chain alkyl structural formula is :-C
nH
2n+1, or-C
nH
2n-1, can have unsaturated double-bond, its carbon number n=6～18, organic phenol monomer is hexyl phenol, nonyl phenol, octyl phenol, 2,4-DI-tert-butylphenol compounds, 2,6-DI-tert-butylphenol compounds, dodecylphenol or anacardol.
5. low water absorption ratio phenolic paper laminate according to claim 3 is characterized in that: organic phenol monomer of described band straight-chain alkyl, wherein the straight-chain alkyl structural formula is :-C
nH
2n+1, or-C
nH
2n-1, can have unsaturated double-bond, its carbon number n=6～18, organic phenol monomer is hexyl phenol, nonyl phenol, octyl phenol, 2,4-DI-tert-butylphenol compounds, 2,6-DI-tert-butylphenol compounds, dodecylphenol or anacardol.
6. low water absorption ratio phenolic paper laminate according to claim 3 is characterized in that: described aldehydes monomer is formaldehyde, acetaldehyde or methacrylaldehyde.
7. low water absorption ratio phenolic paper laminate according to claim 1 is characterized in that: described condensation catalyst is ammoniacal liquor, NaOH, barium hydroxide or magnesium hydroxide; Described diluent is alcohol, methyl alcohol, toluene, acetone or their arbitrary proportion mixture.
8. low water absorption ratio phenolic paper laminate according to claim 3 is characterized in that: described condensation catalyst is ammoniacal liquor, NaOH, barium hydroxide or magnesium hydroxide; Described diluent is alcohol, methyl alcohol, toluene, acetone or their arbitrary proportion mixture.
9. the preparation method according to each described low water absorption ratio phenolic paper laminate of claim 1～8 is characterized in that, the step of this method is:
(1). by vertical steeping vat dipping phenol-formaldehyde resin modified, the brown paper impregnating speed is 10～20 meters/minute with brown paper;
(2). the brown paper that step (1) is impregnated with phenol-formaldehyde resin modified enters and carries out drying in the vertical baking oven and handle, and the bake out temperature scope of vertical baking oven is 70～90 ℃;
(3). the brown paper of the oven dry that step (2) is obtained floods phenol-formaldehyde resin modified again by horizontal steeping vat, and the brown paper impregnating speed is 10～20 meters/minute;
(4). the brown paper that step (3) is impregnated with phenol-formaldehyde resin modified enters and carries out drying in the horizontal baking oven and handle, and the bake out temperature scope of horizontal baking oven is 80～120 ℃;
(5). the dipping of the oven dry that step (4) is obtained many preimpregnation quires of phenol-formaldehyde resin modified be placed on the mould, the hot press of packing into carries out hot-forming processing, briquetting pressure 80～100kg/cm
2, 150～160 ℃ of forming temperatures.
10. purposes according to each described low water absorption ratio phenolic paper laminate of claim 1～8, it is characterized in that: described low water absorption ratio phenolic paper laminate is applied to machinery, electric insulation laminate.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104364283A (en) * | 2012-05-31 | 2015-02-18 | 住友电木株式会社 | Liquid phenolic resole resin and wet paper friction material |
| CN107033537A (en) * | 2017-05-18 | 2017-08-11 | 山东四达工贸股份有限公司 | One kind makes tea tray insulation board and preparation method thereof |
| CN107057008A (en) * | 2017-05-18 | 2017-08-18 | 山东四达工贸股份有限公司 | A kind of antistatic laminated phenolic paper plate and preparation method |
| CN107090744A (en) * | 2017-05-28 | 2017-08-25 | 山东龙德复合材料科技股份有限公司 | A kind of alcohol-soluble phenolic resin dip-coating glue, oil-water separation fuel filter paper and preparation method |
| CN107638998A (en) * | 2017-11-21 | 2018-01-30 | 山东天睿玻纤复合材料有限公司 | A kind of coiled process units of glass fabric |
| CN110983861A (en) * | 2019-12-13 | 2020-04-10 | 湖北理工学院 | Super-hydrophobic phenolic resin laminated board and preparation method thereof |
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2006
- 2006-04-28 CN CN 200610011821 patent/CN101062570A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104364283A (en) * | 2012-05-31 | 2015-02-18 | 住友电木株式会社 | Liquid phenolic resole resin and wet paper friction material |
| CN107033537A (en) * | 2017-05-18 | 2017-08-11 | 山东四达工贸股份有限公司 | One kind makes tea tray insulation board and preparation method thereof |
| CN107057008A (en) * | 2017-05-18 | 2017-08-18 | 山东四达工贸股份有限公司 | A kind of antistatic laminated phenolic paper plate and preparation method |
| CN107090744A (en) * | 2017-05-28 | 2017-08-25 | 山东龙德复合材料科技股份有限公司 | A kind of alcohol-soluble phenolic resin dip-coating glue, oil-water separation fuel filter paper and preparation method |
| CN107090744B (en) * | 2017-05-28 | 2019-05-03 | 山东龙德复合材料科技股份有限公司 | A kind of alcohol-soluble phenolic resin dip-coating glue, oil-water separation fuel filter paper and preparation method |
| CN107638998A (en) * | 2017-11-21 | 2018-01-30 | 山东天睿玻纤复合材料有限公司 | A kind of coiled process units of glass fabric |
| CN110983861A (en) * | 2019-12-13 | 2020-04-10 | 湖北理工学院 | Super-hydrophobic phenolic resin laminated board and preparation method thereof |
| CN110983861B (en) * | 2019-12-13 | 2021-11-09 | 湖北理工学院 | Super-hydrophobic phenolic resin laminated board and preparation method thereof |
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