Preparation method of TRB composite injection molded rubber material with high physical property

A rubber material and composite technology, applied in the field of composite materials, can solve the problems of TPR modified materials such as high elasticity, stress crack resistance, wear resistance, low density, failure to effectively solve TPR material, poor shock absorption ability, etc., to achieve processing Improved safety, reduced processing time, wear resistance and low density effects

Inactive Publication Date: 2015-01-07
广东志达行新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] TPR is the abbreviation of Thermoplastic Rubber. It is widely used in the field of shoe materials. It has the advantages of easy shaping and low price. The disadvantages are that the material is heavy, not wear-resistant, poor in softness, poor in bendability, and poor in shock absorption.
[0003] Chinese patent 2014.05.14, with the publication number CN 103788440 A, discloses an improved formulation of TPR, which is characterized in that the TPR material is made of thermoplas

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In the present embodiment, the weight ratio of each raw material used to prepare a kind of high-physical composite injection molding rubber material is: 50 parts of SBS, 10 parts of SEBS, 20 parts of nitrile rubber, 15 parts of polystyrene, 15 parts of softening oil, 4 parts of white carbon black, 5 parts of nano-calcium carbonate, 4 parts of low-temperature foaming agent, 1.5 parts of polymer wear-resistant oil, and 5 parts of grafted substance.

[0019] Wherein, the above-mentioned grafted substance is made by mixing fillers, rubber additives and lubricants.

[0020] The various raw materials in the above formula are processed according to the following steps: first, the nitrile rubber is masticated and pressed into thin slices with a thickness of 0.5mm and cut to make each thin slice weigh 0.5mm, and then put it into the mixing tank and add emulsified oil Soak for 30 minutes, then add SBS and SEBS and stir for 30-40 minutes, put it in the mixing bucket for 5-7 hours ...

Embodiment 2

[0024] In the present embodiment, the weight ratio of each raw material used to prepare a kind of high-physical composite injection molding rubber material is: 60 parts of SBS; 20 parts of SEBS; 30 parts of nitrile rubber; 20 parts of polystyrene; 20 parts of softening oil; 8 parts of white carbon black; 7 parts of nano-calcium carbonate; 5 parts of low-temperature foaming agent; 2 parts of polymer wear-resistant oil; 10 parts of grafted substances.

[0025] Further, the grafted substance is prepared by mixing fillers, rubber additives and lubricants.

[0026] The raw materials with the above weight ratio are processed according to the following steps: put SBS and SEBS into the mixing tank one after another, add part of the softening oil and stir for 70 minutes. Molding and pressing into thin slices with a thickness of 0.5mm and cutting so that the weight of each thin slice is 0.5kg, put the nitrile rubber thin slices into the mixing barrel and stir and mix with SBS and SEBS f...

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PUM

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Abstract

The invention discloses a preparation method of a TRB composite injection molded rubber material with high physical property. The preparation method comprises the following steps: tabletting nitrile rubber into slices with the thickness of 0.5-0.8mm in a plastication mode firstly, cutting each slice until the weight of each slice is 0.5-1kg, then throwing in a stirring barrel, adding emulsified oil, soaking for 30min, then adding SBS and SEBS, stirring for 30-40min, taking out a mixture from the stirring barrel, standing for 5-7h, and naturally cooling; throwing the cooled material in an internal mixer, adding polystyrene, softening oil, white carbon black, nanometer calcium carbonate and polymer wear resistant oil, carrying out internal mixing for 3-4min, then adding a filler, a rubber additive and a lubricant, and carrying out internal mixing for 6-7min; after internal mixing, discharging the material by virtue of a double-shaft extruder, then cooling and pelleting the material to obtain particles, injecting the particles in a mold by virtue of an ejection pipe, and carrying out injection for 4-8min at temperature of 150-160 DEG C and pressure of 10-15mpa.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a preparation method of TRB high-physical composite injection molding rubber material. Background technique [0002] TPR is the abbreviation of Thermoplastic Rubber. It is widely used in the field of shoe materials. It has the advantages of easy shaping and low price. The disadvantages are that the material is heavy, not wear-resistant, poor in softness, poor in flexibility, and poor in shock absorption. [0003] Chinese patent 2014.05.14, with the publication number CN 103788440 A, discloses an improved formulation of TPR, which is characterized in that the TPR material is made of thermoplastic rubber, toluene diisocyanate and isoprene rubber, and the TPR material has Elasticity, cold resistance (glass transition temperature -68°C) and high tensile strength, however, this material still fails to effectively solve the problems of TPR material being heavy and not wear-resistant....

Claims

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Application Information

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IPC IPC(8): C08L53/02C08L9/02C08L25/06C08L91/00C08K3/36C08K3/26C08J9/04
Inventor 伍达志
Owner 广东志达行新材料有限公司
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