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

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....

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 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

[0004] At present, there is still no TPR modified material that can simultaneously possess properties such as plasticity, high elasticity, stress crack resistance, wear resistance and low density.