CN118515946B - Filling composition for improving wear resistance of PE material, and preparation method and application thereof - Google Patents
Filling composition for improving wear resistance of PE material, and preparation method and application thereof Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 74
- 239000000203 mixture Substances 0.000 title claims abstract description 45
- 238000011049 filling Methods 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 claims abstract description 52
- 229920001971 elastomer Polymers 0.000 claims abstract description 41
- 239000000806 elastomer Substances 0.000 claims abstract description 41
- -1 magnesium hexafluorosilicate Chemical compound 0.000 claims abstract description 41
- 239000002131 composite material Substances 0.000 claims abstract description 30
- 239000000945 filler Substances 0.000 claims abstract description 22
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 14
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 14
- RMKZLFMHXZAGTM-UHFFFAOYSA-N [dimethoxy(propyl)silyl]oxymethyl prop-2-enoate Chemical compound CCC[Si](OC)(OC)OCOC(=O)C=C RMKZLFMHXZAGTM-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000012986 modification Methods 0.000 claims abstract description 9
- 230000004048 modification Effects 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims description 12
- 238000005299 abrasion Methods 0.000 claims description 6
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims description 4
- 239000005995 Aluminium silicate Substances 0.000 claims description 4
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 4
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 4
- 235000012211 aluminium silicate Nutrition 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 4
- 239000003999 initiator Substances 0.000 claims description 4
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000005469 granulation Methods 0.000 claims description 3
- 230000003179 granulation Effects 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000010008 shearing Methods 0.000 claims description 3
- HRZFUMHJMZEROT-UHFFFAOYSA-L sodium disulfite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O HRZFUMHJMZEROT-UHFFFAOYSA-L 0.000 claims description 3
- 229940001584 sodium metabisulfite Drugs 0.000 claims description 3
- 235000010262 sodium metabisulphite Nutrition 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 239000004342 Benzoyl peroxide Substances 0.000 claims description 2
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 2
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 24
- 230000032683 aging Effects 0.000 abstract description 2
- 239000004698 Polyethylene Substances 0.000 description 64
- 229920000573 polyethylene Polymers 0.000 description 22
- 230000000052 comparative effect Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 229920001903 high density polyethylene Polymers 0.000 description 3
- 239000004700 high-density polyethylene Substances 0.000 description 3
- 229920001684 low density polyethylene Polymers 0.000 description 3
- 239000004702 low-density polyethylene Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 229940104869 fluorosilicate Drugs 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
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- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229920010126 Linear Low Density Polyethylene (LLDPE) Polymers 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
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- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
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- 238000005260 corrosion Methods 0.000 description 1
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- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
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- 239000002861 polymer material Substances 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
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- 239000000243 solution Substances 0.000 description 1
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- 238000010998 test method Methods 0.000 description 1
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Abstract
The invention discloses a filling composition for improving the wear resistance of PE materials, a preparation method and application thereof, wherein the filling composition comprises a modified SEBS elastomer, composite whiskers, an accelerator, an antioxidant and a filler; the modified SEBS elastomer is prepared by grafting modification of the SEBS elastomer by using acryloxypropyl trimethoxy silane; the composite whisker is prepared by carrying out wet modification on potassium titanate whisker and magnesium hexafluorosilicate. The filling composition is prepared by modifying SEBS elastomer and composite whisker with excellent wear resistance and adding accelerator, antioxidant and filler, has good compatibility with PE material, can improve the wear resistance and ageing resistance of the PE material, can enhance the chemical stability of the PE material, can prolong the service life, and can be widely applied to the field of PE materials.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a filling composition for improving wear resistance of PE materials, and a preparation method and application thereof.
Background
The PE material is a thermoplastic resin prepared by polymerization of ethylene monomers. The material has the characteristics of no odor and no toxicity, is wax-like in hand feeling, and has excellent low temperature resistance, and the minimum use temperature can reach-100 to-70 ℃. Polyethylene has very good chemical stability and is resistant to attack by most acids and bases (not resistant to acids with oxidizing properties). Polyethylene is insoluble in a general solvent at normal temperature, has small water absorption, and is excellent in electrical insulation. Because of its unique physical and chemical properties, polyethylene has very wide application, and is mainly used for making film, packaging material, container, pipeline, monofilament, wire and cable, commodity, etc. and can be used as high-frequency insulating material for TV and radar, etc..
Polyethylene can be classified into various types according to various polymerization methods and molecular structures, including Linear Low Density Polyethylene (LLDPE), low Density Polyethylene (LDPE), high Density Polyethylene (HDPE), and the like. These different types of polyethylene differ in structure, properties and applications. For example, LLDPE has a narrower molecular weight distribution and linear structure than typical LDPE, making it excellent in environmental stress crack resistance, low temperature impact resistance and warpage resistance, suitable for pipe, sheet extrusion and all molding applications. HDPE has good thermal performance, electrical performance and mechanical performance, and better heat resistance and corrosion resistance, and is suitable for various fields such as films, pipes, injection daily necessities and the like.
However, with the development of technology and process, the demands for mechanical properties and chemical properties of polyethylene materials are continuously increasing, so that various filler compositions are often added into polyethylene in the prior art to increase various properties of polyethylene.
However, the compatibility between the filler composition and the polyethylene material in the prior art is poor, and the filler composition is difficult to effectively compound in the polyethylene material, so that the performance of the polyethylene material cannot be effectively improved, the performance and the processibility of the filler composition can be influenced, and the improvement of the wear resistance and the chemical resistance of the filler composition in the prior art on the polyethylene material is limited, so that the requirements of various processes and environments cannot be met.
Thus, there is a need for a filler composition that can effectively improve the abrasion resistance and chemical resistance of polyethylene materials, and that has excellent compatibility with polyethylene materials.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a filling composition capable of effectively improving the wear resistance and chemical resistance of a polyethylene material and having excellent compatibility with the polyethylene material and improving the wear resistance of the PE material, and a preparation method and application thereof.
A filling composition for improving the wear resistance of PE materials comprises a modified SEBS elastomer, composite whiskers, an accelerator, an antioxidant and a filler; the modified SEBS elastomer is prepared by grafting modification of the SEBS elastomer by using acryloxypropyl trimethoxy silane; the composite whisker is prepared by carrying out wet modification on potassium titanate whisker and magnesium hexafluorosilicate.
The SEBS elastomer and the PE material have good compatibility, the modified SEBS elastomer is used as a main component, so that the filling composition can be effectively compounded in the PE material, various performances of the PE material are further improved, and the mechanical property and the chemical property of the PE material can be remarkably improved based on the excellent weather resistance, high-low temperature resistance and easy processing performance of the SEBS elastomer.
Further, the modified SEBS elastomer is prepared by the steps of: adding acryloxypropyl trimethoxy silane, an initiator and an organic solvent into a reactor, stirring, adding the SEBS elastomer, uniformly mixing, transferring into a double-screw extruder, and performing extrusion granulation to obtain the modified SEBS elastomer.
According to the invention, the SEBS elastomer is grafted and modified by the acryloxypropyl trimethoxy silane, and the siloxane structure of the SEBS elastomer can be mutually crosslinked in the SEBS elastomer to form a reticular siloxane structure with excellent stability, so that the SEBS elastomer can be used as a filler to remarkably improve the wear resistance of PE materials and the overall chemical resistance of the PE materials.
Further, the number average molecular weight of the SEBS elastomer is 40-60 ten thousand; the initiator is selected from one of azodiisobutyronitrile, azodiisoheptonitrile or benzoyl peroxide; the mass ratio of the acryloxypropyl trimethoxy silane to the SEBS elastomer is 3-5:15.
Further, the temperature of a screw feeding section of the double-screw extruder is 170-190 ℃, the temperature of a conveying section is 190-195 ℃, the temperature of a melting section is 200-210 ℃, the temperature of a machine head is 200-205 ℃, and the rotating speed of a screw is 200-240r/min.
Further, the composite whisker is prepared by the following steps: adding magnesium hexafluorosilicate and deionized water into a reactor, stirring and dissolving, adding potassium titanate whisker, heating to 60-70 ℃, stirring and reacting for 2-3 hours under the condition of 120-140r/min, cooling, filtering, washing and drying to obtain the composite whisker.
The invention is based on the excellent chemical stability and mechanical property of the potassium titanate whisker, and can further improve the chemical resistance and the wear resistance of the PE material.
According to the invention, the potassium titanate whisker is modified by the magnesium hexafluorosilicate by a wet method, on one hand, the magnesium hexafluorosilicate with the polyfluoro silicon branched chain can improve the dispersibility of the potassium titanate whisker, and the agglomeration of the fine potassium titanate whisker is avoided, so that the overall performance is influenced; on the other hand, the chemical stability of the potassium titanate whisker can be improved through the fluorosilicate bond in the magnesium hexafluorosilicate, so that the filling composition can further improve the chemical resistance of the PE material, and the service life of the PE material is prolonged.
Further, the mass ratio of the potassium titanate whisker to the magnesium hexafluorosilicate is 6-8:1.
Further, the accelerator is selected from one of triethanolamine, triethylene diamine or dibutyl tin dilaurate; the antioxidant is selected from one of antioxidant 1010, antioxidant BHT or sodium metabisulfite; the filler is selected from one of kaolin, diatomite or talcum powder.
Further, the mass percent of each component is as follows, calculated as 100% of the total mass percent:
25-30% of modified SEBS elastomer
8-12% Of composite whisker
3-5% Of accelerator
Antioxidant 1-3%
The balance being filler.
The preparation method of the filling composition for improving the wear resistance of the PE material comprises the following steps: adding the modified SEBS elastomer, the accelerator, the antioxidant and the filler into a reactor, uniformly stirring, heating to 50-60 ℃, adding the composite whisker, and shearing for 1-2 hours under the condition of 1200-1500r/min to obtain the filling composition for improving the wear resistance of the PE material.
Use of any of the above filler compositions to increase the abrasion resistance of PE materials in PE materials.
The beneficial effects are that: (1) The filling composition for improving the wear resistance of the PE material is prepared by the modified SEBS elastomer with excellent wear resistance, the composite whisker and the accelerator, the antioxidant and the filler, has good compatibility with the PE material, can improve the wear resistance and the ageing resistance of the PE material, can enhance the chemical stability of the PE material, can prolong the service life, and can be widely applied to the field of PE materials;
(2) According to the filling composition for improving the wear resistance of the PE material, the SEBS elastomer and the PE material have good compatibility, the modified SEBS elastomer is used as a main component, so that the filling composition can be effectively compounded in the PE material, various properties of the PE material are further improved, and the mechanical property and the chemical property of the PE material can be remarkably improved based on the excellent weather resistance, high-low temperature resistance and easy processing property of the SEBS elastomer;
(3) According to the filling composition for improving the wear resistance of the PE material, the SEBS elastomer is subjected to grafting modification through the acryloxypropyl trimethoxy silane, and the siloxane structure of the filling composition can be mutually crosslinked in the SEBS elastomer to form a reticular siloxane structure with excellent stability, so that the filling composition can be used as a filler to obviously improve the wear resistance of the PE material and improve the overall chemical resistance of the PE material;
(4) The filling composition for improving the wear resistance of the PE material provided by the invention has the advantages that the chemical resistance and the wear resistance of the PE material can be further improved based on the excellent chemical stability and the mechanical property of the potassium titanate whisker;
(5) According to the filling composition for improving the wear resistance of the PE material, the potassium titanate whisker is modified by the magnesium hexafluorosilicate by the wet method, on one hand, the magnesium hexafluorosilicate with the polyfluoro silicon branched chain can improve the dispersibility of the potassium titanate whisker, so that the fine potassium titanate whisker is prevented from agglomerating, and the overall performance is influenced; on the other hand, the chemical stability of the potassium titanate whisker can be improved through the fluorosilicate bond in the magnesium hexafluorosilicate, so that the filling composition can further improve the chemical resistance of the PE material, and the service life of the PE material is prolonged.
Detailed Description
The invention will be described below in connection with specific embodiments. The following examples are illustrative of the present invention and are not intended to limit the present invention. Other combinations and various modifications within the spirit of the invention may be made without departing from the spirit or scope of the invention.
The commercial wear-resistant additive is U.S. Suwei POLYMIST cube PTFE XPP 545 purchased from Ross new materials Co., guangzhou; the rest reagents and equipment are conventional reagents and equipment in the technical field.
Preparation of modified SEBS elastomer-1
The modified SEBS elastomer-1 was prepared by the following steps:
Adding 4g of acryloxypropyl trimethoxysilane, 0.3g of azobisisobutyronitrile and 100mL of butanone into a reactor, stirring, adding 15g of SEBS elastomer, uniformly mixing, transferring into a double screw extruder, extruding and granulating under the conditions that the temperature of a feeding section is 180 ℃, the temperature of a conveying section is 195 ℃, the temperature of a melting section is 210 ℃, the temperature of a machine head is 200 ℃, and the rotating speed of a screw is 240r/min, and obtaining the modified SEBS elastomer-1.
Preparation of modified SEBS elastomer-2
Substantially the same as the modified SEBS elastomer-1 was prepared, except that the acryloxypropyl trimethoxysilane was changed to an equivalent amount of maleic anhydride.
Preparation of composite whisker-1
The composite whisker-1 is prepared by the following steps:
according to the parts by weight, 1 part of magnesium hexafluorosilicate and deionized water are added into a reactor, 8 parts of potassium titanate whisker is added after stirring and dissolving, the temperature is raised to 70 ℃, stirring and reacting are carried out for 3 hours under the condition of 130r/min, and then the composite whisker-1 is obtained after cooling, filtering, washing and drying.
Preparation of composite whisker-2
Substantially the same as composite whisker-1 was prepared except that magnesium hexafluorosilicate was changed to an equivalent amount of magnesium silicate.
Example 1
A filler composition for improving the wear resistance of PE materials is prepared by:
Adding a modified SEBS elastomer, triethanolamine, an antioxidant 1010 and kaolin into a reactor, uniformly stirring, heating to 60 ℃, adding composite whisker-1, and shearing for 2 hours under the condition of 1400r/min to obtain the filling composition for improving the wear resistance of the PE material;
The mass percent of each component is as follows, calculated as 100% of the total mass percent:
Modified SEBS elastomer-1.30%
Composite whisker-1% 10%
Triethanolamine 4%
Antioxidant 1010 2%
The balance being kaolin.
Example 2
Substantially as in example 1, except that the components and their mass percentages were as follows, based on 100% by mass total:
modified SEBS elastomer-1 25%
Composite whisker-1 to 12 percent
Triethylene diamine 5%
Antioxidant BHT 1%
The balance of talcum powder.
Example 3
Substantially as in example 1, except that the components and their mass percentages were as follows, based on 100% by mass total:
Modified SEBS elastomer-1.28%
Composite whisker-1 8%
Dibutyl tin dilaurate 3%
Sodium metabisulfite 3%
The balance of diatomite.
Comparative example 1
Commercial wear additives.
Comparative example 2
Substantially the same as in example 1, except that the modified SEBS elastomer-1 was changed to an equivalent amount of SEBS elastomer.
Comparative example 3
Substantially the same as in example 1, except that the modified SEBS elastomer-1 was changed to an equivalent amount of the modified SEBS elastomer-2.
Comparative example 4
Substantially the same as in example 1, except that composite whisker-1 was changed to an equivalent amount of filler.
Comparative example 5
Substantially the same as in example 1, except that composite whisker-1 was changed to equivalent composite whisker-2.
Performance testing
15 Parts of the products of examples 1-3 and comparative examples 1-5 are respectively mixed with 85 parts of polyethylene materials according to parts by weight, and the mixture is subjected to melt mixing in a double-screw extruder, extrusion granulation to obtain the modified polyethylene material.
Tensile strength detection: the tensile strength-1 of the modified polyethylene material prepared above was measured according to the measurement standard of the GB/T1040-1992 plastic tensile test method.
Chemical resistance detection: the modified polyethylene materials prepared in the above were placed in xylene solution respectively, and after standing for 72 hours, the tensile strength-2 of the modified polyethylene materials was again detected respectively according to the detection standard of the GB/T1040-1992 plastic tensile test method.
And (3) abrasion resistance detection: according to the detection standard of the GB/T3960-2016 plastic sliding friction wear test method, the volume wear of the prepared modified polyethylene material is detected respectively.
The test results are shown in the following table:
as can be seen from comparison of the test results of examples 1-3 and comparative example 1, the filling composition provided by the invention can more effectively improve the wear resistance and chemical resistance of PE materials than the wear-resistant additive in the prior art.
According to comparison of the detection results of examples 1-3 and comparative examples 2-3, the modified SEBS elastomer in the filling composition provided by the invention can effectively improve the compatibility with PE materials, and further can effectively enhance the wear resistance and chemical resistance of the PE materials.
As can be seen from comparison of the test results of examples 1-3 and comparative examples 4-5, the composite whisker in the filling composition provided by the invention can further improve the enhancement effect of the composite whisker on the wear resistance and chemical resistance of PE materials.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the present invention and to implement it, but not limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (9)
1. A filling composition for improving the wear resistance of PE materials is characterized by comprising a modified SEBS elastomer, composite whiskers, an accelerator, an antioxidant and a filler;
the modified SEBS elastomer is prepared by grafting modification of the SEBS elastomer by using acryloxypropyl trimethoxy silane;
the composite whisker is prepared by carrying out wet modification on potassium titanate whisker and magnesium hexafluorosilicate;
The filling composition comprises the following components in percentage by mass, based on 100% of the total mass:
25-30% of modified SEBS elastomer
8-12% Of composite whisker
3-5% Of accelerator
Antioxidant 1-3%
The balance being filler.
2. The filling composition for improving the wear resistance of PE materials according to claim 1, characterized in that the modified SEBS elastomer is prepared by the following steps: adding acryloxypropyl trimethoxy silane, an initiator and an organic solvent into a reactor, stirring, adding the SEBS elastomer, uniformly mixing, transferring into a double-screw extruder, and performing extrusion granulation to obtain the modified SEBS elastomer.
3. The filling composition for improving the abrasion resistance of PE materials according to claim 2, characterized in that the SEBS elastomer has a number average molecular weight ranging from 40 to 60 tens of thousands; the initiator is selected from one of azodiisobutyronitrile, azodiisoheptonitrile or benzoyl peroxide; the mass ratio of the acryloxypropyl trimethoxy silane to the SEBS elastomer is 3-5:15.
4. The filling composition for improving the wear resistance of PE materials according to claim 2, wherein the temperature of a screw feeding section of the twin-screw extruder is 170-190 ℃, the temperature of a conveying section is 190-195 ℃, the temperature of a melting section is 200-210 ℃, the temperature of a machine head is 200-205 ℃, and the rotating speed of a screw is 200-240r/min.
5. The filling composition for improving the wear resistance of PE materials according to claim 1, wherein the composite whisker is prepared by: adding magnesium hexafluorosilicate and deionized water into a reactor, stirring and dissolving, adding potassium titanate whisker, heating to 60-70 ℃, stirring and reacting for 2-3 hours under the condition of 120-140r/min, cooling, filtering, washing and drying to obtain the composite whisker.
6. The filling composition for improving the wear resistance of PE materials according to claim 5, wherein the mass ratio of the potassium titanate whiskers to the magnesium hexafluorosilicate is 6-8:1.
7. The filling composition for improving the wear resistance of a PE material according to claim 1, wherein the accelerator is one selected from triethanolamine, triethylenediamine or dibutyltin dilaurate; the antioxidant is selected from one of antioxidant 1010, antioxidant BHT or sodium metabisulfite; the filler is selected from one of kaolin, diatomite or talcum powder.
8. A process for preparing a filling composition for improving the abrasion resistance of PE materials according to any one of claims 1 to 7, characterized by comprising the steps of: adding the modified SEBS elastomer, the accelerator, the antioxidant and the filler into a reactor, uniformly stirring, heating to 50-60 ℃, adding the composite whisker, and shearing for 1-2 hours under the condition of 1200-1500r/min to obtain the filling composition for improving the wear resistance of the PE material.
9. Use of a filling composition according to any one of claims 1 to 7 for increasing the abrasion resistance of PE materials.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105670215A (en) * | 2016-01-29 | 2016-06-15 | 宁波海飞电器有限公司 | Composite plastic for inner drum of washing machine and preparation method of composite plastic |
| CN106543573A (en) * | 2016-11-25 | 2017-03-29 | 安徽美翔塑业有限公司 | A kind of automobile flame-proof elastomeric material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105670215A (en) * | 2016-01-29 | 2016-06-15 | 宁波海飞电器有限公司 | Composite plastic for inner drum of washing machine and preparation method of composite plastic |
| CN106543573A (en) * | 2016-11-25 | 2017-03-29 | 安徽美翔塑业有限公司 | A kind of automobile flame-proof elastomeric material and preparation method thereof |
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