CN101121799A - Low-luster polypropylene blending modified material and preparation method thereof - Google Patents
Low-luster polypropylene blending modified material and preparation method thereof Download PDFInfo
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- CN101121799A CN101121799A CNA2006100370184A CN200610037018A CN101121799A CN 101121799 A CN101121799 A CN 101121799A CN A2006100370184 A CNA2006100370184 A CN A2006100370184A CN 200610037018 A CN200610037018 A CN 200610037018A CN 101121799 A CN101121799 A CN 101121799A
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Abstract
The present invention relates to the blending and modifying field of the polymer material, and discloses a polypropylene blend modified material with the lowered surface gloss. The polypropylene blend modified material of the present invention consists of the following components and weight percentages: 20 to 90 percent of polypropylene, 10 to 80 percent of polyethylene, 0 to 2 percent of peroxide cross-linking agent, 0 to 5 percent of antioxidant, 0 to 5 percent of processing aid, and 0 to 30 percent of filler. The preparation method is: the components are blended in the high-speed mixer for 5 to 15 minutes according to the proportion; the twin-screw extruder is used to melt and blend; the temperature of the extruder is set to be between 100 and 220 Celsius system, and the rotating speed of the screw to be 150 to 400 rounds per minute; after pelletizing and drying, the polypropylene blend modified material can be made. The polypropylene blend modified material of the present invention has the lowered surface gloss and the good extinction effects, and can be used in the fields such as the packaging, daily necessities and building materials, and so on.
Description
Technical field
The present invention relates to macromolecular material blending and modifying field, specifically, relate to the polypropylene blending modified material that a kind of surface gloss reduces.
Background technology
Polypropylene (PP) is that to adopt propylene be that monomer carries out the polymkeric substance that polymerization makes, and its molecular structure is linear hydrocarbon polymer, is the lightest a kind of in the existing goods resin.Nonpoisonous and tasteless, acidproof, the anti-solvent of polypropylene, now extensively model is applied to fields such as articles for daily use, packing, health care.
Along with improving constantly of people's living standard, more requirement has been proposed products appearance.About PP blast, anti-reflection research report and document have had a lot, but, make a kind of matte surface (delustring) Research on effect report and patent documentation seldom for the surface luster of reducing PP.The surface dulling of polymer materials such as ABS, polyethylene (PE) can adopt the inorganic materials (as talcum powder, silicon-dioxide, kaolin etc.) of adding particular particle size, but add these materials and need control particle diameter about 5um, and addition needs 5～10%, this can damage the mechanical property of material to a certain extent, and extinction effect is also undesirable.For the PP material, the photoextinction that adds above-mentioned inorganic extinction material generation is little, and extinction effect is bad.
Summary of the invention
The objective of the invention is to solve inorganic extinction material poor effect, mechanical property is influenced bigger problem, prepare the PP blending and modifying novel material that a kind of extinction effect is good, mechanical property is preferable.
Another object of the present invention is to provide the preparation method of above-mentioned PP extinction material.
To achieve these goals, the present invention adopts following technical scheme:
Polypropylene blending modified material of the present invention is made up of following component and weight percent: polypropylene 20～90%, polyethylene 10～80%, peroxide cross-linking agent 0～2%, oxidation inhibitor 0～5%, processing aid 0～5%, filler 0～30%.
Above-mentioned polypropylene (PP) can be one or more the mixture in isotatic polypropylene, syndiotactic polypropylene, Atactic Polypropelene or the Co-polypropylene (adding the multipolymer that monomers such as a spot of ethene, butylene, hexene form in the propylene monomer).
Above-mentioned polyethylene is one or more the mixture in high density polyethylene(HDPE) (HDPE), new LDPE (film grade) (LDPE), the linear low density of polyethylene (LLDPE).
Above-mentioned peroxide cross-linking agent is one or more the mixture in hydroperoxide, alkyl peroxide, diacyl peroxide, ketal peroxide, dicumyl peroxide (DCP), t-butylperoxy isopropyl benzene, two (t-butylperoxy different third) benzene.Preferred peroxide cross-linking agent is dicumyl peroxide (DCP), t-butylperoxy isopropyl benzene, two (t-butylperoxy different third) benzene.
Above-mentioned oxidation inhibitor is phenolic antioxidant or phosphoric acid ester oxidation inhibitor.Described phenolic antioxidant is four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (1010), 2, the mixture of one or more in 6-two (1-phenyl) ethyl-4-nonylphenol (1076), 2,6 di tert butyl 4 methyl phenol (264, BHT); Described phosphoric acid ester oxidation inhibitor is three (2, the 4-di-tert-butyl-phenyl) phosphorous acid ester (168), four (2,4-di-tert-butyl-phenyl-4,4 '-xenyl) one or more mixture in bis-phosphite (PEPQ), three (nonyl phenyl) phosphorous acid ester (TNPP), distearyl pentaerythritol diphosphite (PEP8) or tetramethylolmethane diphosphite two (2, the 4-di-tert-butyl phenyl) ester (626).
Above-mentioned processing aid is one or more the mixture in polyethylene wax, Poly Propylene Wax, stearic acid, Zinic stearas, calcium stearate, Magnesium Stearate, white mineral oil or the silicone oil.
Above-mentioned filler is one or more the mixture in lime carbonate, silicon-dioxide, kaolin, talcum powder, barium sulfate, the wollastonite.
The preparation method of above-mentioned polypropylene blending modified material comprises the steps: each component was mixed in high-speed mixer 5～15 minutes in proportion, adopt twin screw extruder to carry out melt blending then, extruder temperature is set at 100～220 ℃, screw speed 200～400r/min makes polypropylene blending modified material through pelletizing, drying.
Polypropylene blending modified material of the present invention has good extinction effect, its delustring principle is: PP and PE are in the melt blending process, PE with tiny microparticulate in the PP matrix, under the effect of peroxide cross-linking agent, produce crosslinkedly between the PE molecule, form small gel and be evenly distributed in the PP matrix.In molding process, the microgel that is positioned at the surface produces tiny projection, forms a rough uneven surface on the surface.When irradiate light forms a large amount of diffuse-reflectance during to product surface, thereby obtain good extinction effect.
Compared with prior art, the present invention has following beneficial effect: the present invention adopts the method for PP and PE blending and modifying, obtains polypropylene blending modified material.This polypropylene blending modified material surface gloss reduces, extinction effect is good, can be applicable to fields such as packing, daily necessities and material of construction.
Embodiment
Embodiment 1
At normal temperatures and pressures, with HDPE 30%, PP 68.3%, DCP 0.2%, 10100.2%, 1680.2%, Zinic stearas 0.1%, talcum powder 1% mixed 5 minutes in high-speed mixer, adopt twin screw extruder to carry out melt blending then, extruder temperature is set at 160～200 ℃, screw speed 200r/min, make delustring PP blending modified material through pelletizing, drying process, the injection moulding model is also measured its surface gloss.
Embodiment 2
At normal temperatures and pressures, with HDPE 40%, PP 57.35%, t-butylperoxy isopropyl benzene 0.15%, 10760.2%, PEPQ 0.2%, Magnesium Stearate 0.1%, wollastonite 2% mixed 10 minutes in high-speed mixer, adopt twin screw extruder to carry out melt blending then, extruder temperature is set at 150～220 ℃, screw speed 300r/min, make delustring PP blending modified material through pelletizing, drying process, the injection moulding model is also measured its surface gloss.
Embodiment 3
At normal temperatures and pressures, with LDPE 25%, PP71.4%, t-butylperoxy isopropyl benzene 0.1%, BHT 0.2%, 6260.2%, calcium stearate 0.1%, silicon-dioxide 3% mixed 15 minutes in high-speed mixer, adopt twin screw extruder to carry out melt blending then, extruder temperature is set at 150～210 ℃, screw speed 300r/min, make delustring PP blending modified material through pelletizing, drying process, the injection moulding model is also measured its surface gloss.
Embodiment 4
At normal temperatures and pressures, with LDPE 40%, PP 57.3%, DCP 0.2%, 264 oxidation inhibitor 0.2%, TNPP 0.2%, white mineral oil 0.1%, lime carbonate 2% mixed 8 minutes in high-speed mixer, adopt twin screw extruder to carry out melt blending then, extruder temperature is set at 150～200 ℃, screw speed 400r/min, make delustring PP blending modified material through pelletizing, drying process, the injection moulding model is also measured its surface gloss.
Embodiment 5
At normal temperatures and pressures, with LLDPE 15%, PP79.3%, DCP 0.2%, 10100.1%, 1680.2%, Zinic stearas 0.2%, silicon-dioxide 5% mixed 12 minutes in high-speed mixer, adopt twin screw extruder to carry out melt blending then, extruder temperature is set at 150～200 ℃, screw speed 300r/min, make delustring PP blending modified material through pelletizing, drying process, the injection moulding model is also measured its surface gloss.
Embodiment 6
At normal temperatures and pressures, with LLDPE 40%, PP 68.3%, two (t-butylperoxy different third) benzene 0.2%, 10760.2%, 1680.4%, stearic acid 0.2%, lime carbonate 2% mixed 6 minutes in high-speed mixer, adopt twin screw extruder to carry out melt blending then, extruder temperature is set at 150～200 ℃, screw speed 150r/min, make delustring PP blending modified material through pelletizing, drying process, the injection moulding model is also measured its surface gloss.
Comparative Examples 1
At normal temperatures and pressures, with PP 94.4%, silicon-dioxide 5%, Zinic stearas 0.2%, 10100.2%, 1680.2% mixes 5～15min in high-speed mixer, adopt twin screw extruder to carry out melt blending, the PP extinction material of preparation mineral filler modification.The twin screw extruder temperature is set at 100～200 ℃, and screw speed 250r/min makes delustring PP blending modified material through operations such as pelletizing, dryings, and the injection moulding model is also measured its surface gloss.
Comparative Examples 2
At normal temperatures and pressures, with PP 89.4%, talcum powder 10%, white mineral oil 0.2%, 10100.2%, 1680.2% mixes 5～15min in high-speed mixer, adopt twin screw extruder to carry out melt blending, the PP extinction material of preparation mineral filler modification.The twin screw extruder temperature is set at 100～200 ℃, and screw speed 350r/min makes delustring PP blending modified material through operations such as pelletizing, dryings, and the injection moulding model is also measured its surface gloss.
Comparative Examples 3
At normal temperatures and pressures, with PP 91.4%, kaolin 8%, Zinic stearas 0.2%, 10100.2%, 1680.2% mixes 5～15min in high-speed mixer, adopt twin screw extruder to carry out melt blending, the PP extinction material of preparation mineral filler modification.The twin screw extruder temperature is set at 100～200 ℃, and screw speed 400r/min makes delustring PP blending modified material through operations such as pelletizing, dryings, and the injection moulding model is also measured its surface gloss.
From the contrast of table 1 glossiness as can be known, adopt the extinction effect of the PP blending modified material of the present invention's preparation obviously to be better than Comparative Examples, tensile strength is relative with shock strength better.
Table 1 extinction effect and mechanical property are relatively
| Sample | Surface gloss | Tensile strength (MPa) | Cantilever beam impact strength (J/m) |
| PP | 95 | 29.5 | 43.6 |
| Embodiment 1 | 22 | 32.6 | 47.9 |
| Embodiment 2 | 16 | 34.8 | 49.3 |
| Embodiment 3 | 25 | 28.6 | 47.6 |
| Embodiment 4 | 20 | 28.2 | 46.5 |
| Embodiment 5 | 18 | 30.5 | 48.2 |
| Embodiment 6 | 23 | 29.2 | 47.3 |
| Comparative example 1 | 35 | 26.5 | 32.5 |
| Comparative example 2 | 38 | 33.8 | 35.6 |
| Comparative example 3 | 40 | 30.5 | 34.3 |
Claims (9)
1. a polypropylene blending modified material is characterized in that being made up of following component and weight percent: polypropylene 20～90%, polyethylene 10～80%, peroxide cross-linking agent 0～2%, oxidation inhibitor 0～5%, processing aid 0～5%, filler 0～30%.
2. polypropylene blending modified material as claimed in claim 1 is characterized in that described polyethylene is one or more the mixture in high density polyethylene(HDPE), new LDPE (film grade), the linear low density of polyethylene.
3. polypropylene blending modified material as claimed in claim 1 is characterized in that described peroxide cross-linking agent is one or more the mixture in hydroperoxide, alkyl peroxide, diacyl peroxide, ketal peroxide, dicumyl peroxide, t-butylperoxy isopropyl benzene, two (t-butylperoxy different third) benzene.
4. polypropylene blending modified material as claimed in claim 3 is characterized in that described peroxide cross-linking agent is one or more the mixture in dicumyl peroxide, t-butylperoxy isopropyl benzene, two (t-butylperoxy different third) benzene.
5. polypropylene blending modified material as claimed in claim 1 is characterized in that described oxidation inhibitor is phenolic antioxidant or phosphoric acid ester oxidation inhibitor.
6. polypropylene blending modified material as claimed in claim 5, it is characterized in that described phenolic antioxidant is four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester, 2, the mixture of one or more in 6-two (1-phenyl) ethyl-4-nonylphenol, the 2,6 di tert butyl 4 methyl phenol; Described phosphoric acid ester oxidation inhibitor is three (2, the 4-di-tert-butyl-phenyl) phosphorous acid ester, four (2,4-di-tert-butyl-phenyl-4,4 '-xenyl) one or more mixture in bis-phosphite, three (nonyl phenyl) phosphorous acid ester, distearyl pentaerythritol diphosphite or tetramethylolmethane diphosphite two (2, the 4-di-tert-butyl phenyl) ester.
7. polypropylene blending modified material as claimed in claim 1 is characterized in that described processing aid is one or more the mixture in polyethylene wax, Poly Propylene Wax, stearic acid, Zinic stearas, calcium stearate, Magnesium Stearate, white mineral oil or the silicone oil.
8. polypropylene blending modified material as claimed in claim 1 is characterized in that described filler is one or more the mixture in lime carbonate, silicon-dioxide, kaolin, talcum powder, barium sulfate, the wollastonite.
9. the preparation method of the described polypropylene blending modified material of claim 1, it is characterized in that comprising the steps: each component was mixed in high-speed mixer 5～15 minutes in proportion, adopt twin screw extruder to carry out melt blending then, extruder temperature is set at 100～220 ℃, screw speed 150～400r/min makes polypropylene blending modified material through pelletizing, drying.
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| CNA2006100370184A CN101121799A (en) | 2006-08-11 | 2006-08-11 | Low-luster polypropylene blending modified material and preparation method thereof |
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| CNA2006100370184A CN101121799A (en) | 2006-08-11 | 2006-08-11 | Low-luster polypropylene blending modified material and preparation method thereof |
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| CN102382348A (en) * | 2011-08-31 | 2012-03-21 | 上海锦湖日丽塑料有限公司 | Reactive extrusion matte agent, low gloss PC/ABS alloy and its preparation method |
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| CN102585323A (en) * | 2011-01-17 | 2012-07-18 | 高玉森 | Super wear resistant high-adhesion composite tube and manufacturing method thereof |
| CN102617911A (en) * | 2012-03-22 | 2012-08-01 | 华东理工大学 | Reclaimed high-density polyethylene/polypropylene composite material prepared through reaction extruding |
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