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Preparation method of precipitated semi-transparent standard die pressing adhesive

A technology of translucent, precipitation method silica, applied in the field of preparation of precipitation translucent standard molded adhesive, can solve the problems of limited use range of A-grade molded adhesive, poor transparency and elasticity, affecting the aesthetics of products, etc., to achieve transparency Appropriate, low equipment requirements, uniform transparency

Inactive Publication Date: 2018-09-04
滁州君越高分子新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary molded rubber is easy to use and the raw materials are cheap and easy to get, but its transparency and elasticity are poor, and it is prone to yellowing and deterioration during use, which affects the aesthetics of the product. The improved A-level molded rubber, although in Transparency, stability, elasticity, and yellowing resistance are improved compared with ordinary molding adhesives, but the production cost of A-grade molding adhesives is much higher than that of ordinary molding adhesives, which limits the scope of use of A-grade molding adhesives.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of preparation method of precipitation translucent standard molding glue proposed by the present invention comprises the following steps:

[0022] S1. Cut the epoxy resin into epoxy resin sheets with a thickness of 2-3mm, and the size of the epoxy resin sheet is 1-5mm×1-5mm, and set aside;

[0023] S2, adding vulcanized silicone rubber raw rubber and styrene-butadiene rubber raw rubber into an internal mixer to heat and banbury to obtain mixed rubber, and then adding epoxy resin sheets to the mixed rubber for mixing to obtain mixture A;

[0024] S3. Take paraffin oil and polyethylene glycol 400 and mix each other evenly, then add coloring agent and precipitated silica, carry out ultrasonic dispersion, then transfer to a homogenizer, and set the temperature of the homogenizer to 55°C, and carry out two One-stage homogenization, the pressure of the first stage of homogenization is 23MPa, the pressure of the second stage of homogenization is 5MPa, and the mixture B ...

Embodiment 2

[0029] A kind of preparation method of precipitation translucent standard molding glue proposed by the present invention comprises the following steps:

[0030] S1. Cut the epoxy resin into epoxy resin sheets with a thickness of 2-3mm, and the size of the epoxy resin sheet is 1-5mm×1-5mm, and set aside;

[0031] S2, adding vulcanized silicone rubber raw rubber and styrene-butadiene rubber raw rubber into an internal mixer to heat and banbury to obtain mixed rubber, and then adding epoxy resin sheets to the mixed rubber for mixing to obtain mixture A;

[0032] S3. Take paraffin oil and polyethylene glycol 400 and mix each other evenly, then add coloring agent and precipitated silica, carry out ultrasonic dispersion, and then transfer to a homogenizer, and set the temperature of the homogenizer to 60°C for two One-stage homogenization, the pressure of the first stage of homogenization is 20MPa, the pressure of the second stage of homogenization is 4MPa, and the mixture B is obta...

Embodiment 3

[0037] A kind of preparation method of precipitation translucent standard molding glue proposed by the present invention comprises the following steps:

[0038] S1. Cut the epoxy resin into epoxy resin sheets with a thickness of 2-3mm, and the size of the epoxy resin sheet is 1-5mm×1-5mm, and set aside;

[0039] S2, adding vulcanized silicone rubber raw rubber and styrene-butadiene rubber raw rubber into an internal mixer to heat and banbury to obtain mixed rubber, and then adding epoxy resin sheets to the mixed rubber for mixing to obtain mixture A;

[0040] S3. Take paraffin oil and polyethylene glycol 400 and mix each other evenly, then add coloring agent and precipitated silica, carry out ultrasonic dispersion, and then transfer to a homogenizer, and set the temperature of the homogenizer to 50°C for two One-stage homogenization, the pressure of the first stage of homogenization is 25MPa, the pressure of the second stage of homogenization is 6MPa, and the mixture B is obta...

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Abstract

The invention discloses a preparation method of a precipitated semi-transparent standard die pressing adhesive. The preparation method comprises the following steps: S1, slicing epoxy resin; S2, mixing raw rubber of vulcanizing silicone rubber and raw rubber of butadiene styrene rubber; adding epoxy resin slices and mixing to obtain a mixture A; S3, carrying out ultrasonic dispersion and homogenization on a coloring agent and precipitation-method white carbon black in a mixed solution of paraffin oil and polyethylene glycol to obtain a mixture B; S4, adding a nucleating agent, phenyl salicylate, 2,4-dihydroxy benaophenonel, sulfur, N,N-tetramethylthiuram disulfide and the mixture B into the mixture A; then adding a curing agent and a curing accelerant to prepare a die pressing adhesive material; S5, extruding, curing and vulcanizing to obtain the precipitated semi-transparent standard die pressing adhesive. The preparation method provided by the invention is simple to operate and low in equipment requirements; the mixing effect of all raw materials is high and the prepared die pressing adhesive has good stability, elasticity and anti-yellowing performance; the preparation cost is low and the repeatability is good so that the preparation method is suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of molding glue preparation, in particular to a method for preparing a precipitated translucent standard molding glue. Background technique [0002] Molded rubber is produced by pressing and cutting with a mold machine. It has good physical and mechanical properties and is suitable for the production of silicone rubber products, miscellaneous parts and silicone rubber buttons. High-performance molded rubber is also used to make rubber rollers, high-end buttons and rubber hoses. Ordinary molded rubber is easy to use and the raw materials are cheap and easy to get, but its transparency and elasticity are poor, and it is prone to yellowing and deterioration during use, which affects the aesthetics of the product. The improved A-level molded rubber, although in Transparency, stability, elasticity, and yellowing resistance are improved compared with ordinary molding adhesives, but the production cost of A-grade m...

Claims

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Application Information

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IPC IPC(8): C08L83/04C08L9/06C08L63/00C08L91/06C08L71/02C08K13/02C08K3/36C08K3/06C08K5/134C08K5/132C08J3/20
CPCC08J3/2053C08J2383/04C08J2471/02C08J2491/06C08K2201/011C08L83/04C08L2201/10C08L2205/035C08L9/06C08L63/00C08L91/06C08L71/02C08K13/02C08K3/36C08K3/06C08K5/1345C08K5/132
Inventor 任兆军
Owner 滁州君越高分子新材料有限公司