High-elastic wear-resistant polymer rubber and preparation method thereof

A polymer and rubber technology, applied in the field of modified rubber, can solve the problems of small improvement of asphalt low temperature performance, small particle size of inorganic stabilizer, complex production process, etc., to improve wear resistance and mechanical properties, and improve mechanical properties. , the effect of broad application prospects

Active Publication Date: 2021-12-28
上海云橡油脂工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the patent CN101155880 uses a blend of styrene-butadiene copolymer, ethylene-acrylate copolymer and vinyl wax to modify asphalt, which can improve the elasticity and rigidity of asphalt, but due to the styrene-butadiene copolymer The price of elastomer is high, and the production process is complicated, so it is difficult to popularize and use
Patent CN1793235 also adopts the masterbatch method to prepare modified asphalt, but because the preparation of the modified masterbatch is carried out on double rollers, the production efficiency is low, and the particle size of the inorganic stabilizer is small, and it is not easy to disperse uniformly in the asphalt
CN101451016 uses polyethylene resin and polypropylene resin together, can effectively improve the high temperature stability of asphalt, but the improvement of low temperature performance of asphalt is small

Method used

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  • High-elastic wear-resistant polymer rubber and preparation method thereof
  • High-elastic wear-resistant polymer rubber and preparation method thereof
  • High-elastic wear-resistant polymer rubber and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0027] This embodiment provides a method for preparing high elastic wear-resistant polymer rubber, comprising the following steps:

[0028] S1. Graft modification of rubber: the synthetic route is as follows figure 1 , Mix 20g of silane coupling agent KH570, 100g of polyisoprene rubber and 0.1g of initiator, melt and react at a temperature of 140°C, graft copolymerization occurs, and then feed into a screw extruder and heat to 150°C Extrusion granulation at ℃ temperature, ball milling, to obtain powdery graft modified polymer rubber; the initiator is a mixture of azobisisoheptanonitrile and t-butyl peroxy tert-butyl valerate, the mass ratio is 2:1;

[0029] S2. Sol-gel reaction: Disperse 10g of powdery graft modified polymer rubber in 100mL ammonia solution containing 1.5wt% porogen polyoxyethylene sorbitan fatty acid ester, pH value is 9, 10000r / Emulsify at min speed for 5 minutes, react for 3 hours, and centrifuge to obtain in-situ SiO 2 Graft modified rubber;

[0030] S...

Embodiment 2

[0032] This embodiment provides a method for preparing high elastic wear-resistant polymer rubber, comprising the following steps:

[0033] S1. Graft modification of rubber: Mix 35g of silane coupling agent KH570, 100g of polyisoprene rubber and 1g of initiator, heat to 150°C for melting reaction, graft copolymerization occurs, and then feed into the screw extruder, heated to 155°C for extrusion granulation, and ball milling to obtain powdered graft modified polymer rubber; the initiator is a mixture of azobisisoheptanonitrile and t-butyl peroxy tert-butyl The ratio is 4:1;

[0034] S2. Sol-gel reaction: Disperse 10g of powdery graft modified polymer rubber in 100mL ammonia solution containing 2wt% porogen polyethylene glycol octyl phenyl ether, the pH value is 11, and the rotation speed is 15000r / min Emulsified for 10 minutes, reacted for 7 hours, and centrifuged to obtain SiO generated in situ 2 Graft modified rubber;

[0035] S3. Melt blending of polylactic acid: 12-17g ...

Embodiment 3

[0037] This embodiment provides a method for preparing high elastic wear-resistant polymer rubber, comprising the following steps:

[0038]S1. Graft modification of rubber: Mix 30g of silane coupling agent KH570, 100g of polyisoprene rubber and 0.5g of initiator, heat to 145°C for melting reaction, graft copolymerization occurs, and then feed Screw extruder, heated to 152°C, extruded and granulated, ball milled to obtain powdery graft modified polymer rubber; the initiator was a mixture of azobisisoheptanonitrile and t-butyl peroxy tert-butyl valerate, The mass ratio is 3:1;

[0039] S2. Sol-gel reaction: Disperse 10g of powdery graft modified polymer rubber in 100mL of ammonia solution containing 1.7wt% porogen polyoxyethylene sorbitan fatty acid ester, pH value is 10, 12500r / Emulsify at min speed for 7 minutes, react for 5 hours, and centrifuge to obtain in-situ SiO 2 Graft modified rubber;

[0040] S3. Melt blending of polylactic acid: 15g polylactic acid, 100g in situ ...

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Abstract

The invention provides high-elastic wear-resistant polymer rubber and a preparation method thereof, and belongs to the technical field of modified rubber. The high-elastic wear-resistant polymer rubber comprises the following steps: S1, graft modification of rubber: mixing a silane coupling agent KH570, polyisoprene rubber and an initiator, melting under a heating condition, and carrying out graft copolymerization, granulation and ball milling to obtain powdery graft modified polymer rubber; S2, sol-gel reaction: dispersing the powdery graft modified polymer rubber in an ammonia water solution containing a pore-foaming agent, emulsifying and reacting to obtain graft modified rubber for generating SiO2 in situ; and S3, melt blending of polylactic acid: internally mixing the polylactic acid and the in-situ generated SiO2 graft modified rubber, shearing into particles, and carrying out injection molding to obtain the high-elastic wear-resistant polymer rubber. The high-elasticity wear-resistant polymer rubber prepared by the invention has better elasticity, toughness, biocompatibility and biodegradability, and has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of modified rubber, in particular to a high-elastic and wear-resistant polymer rubber and a preparation method thereof. Background technique [0002] Natural rubber is a natural polymer compound with polyisoprene as the main component. The content of polyisoprene is more than 90%, and it also contains a small amount of protein, fatty acid, sugar and ash. Due to its good elasticity , plasticity, strength and insulation properties have long been widely used in various fields of industrial production, such as: wires, cables, conveyor belts, hoses, various rubber products used in electronics and electrical industries, as well as automobiles, airplanes, ships Used rubber products, etc. However, due to the poor strength and wear resistance of natural rubber, modification methods are often used in actual production to improve these two properties of natural rubber. Natural rubber materials have extremely important...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C08L87/00C08L67/04C08C19/25C08G83/00
CPCC08L87/005C08C19/25C08G83/001C08L2201/06C08L67/04
Inventor胡海阔
Owner上海云橡油脂工业有限公司