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Anti-yellowing comprehensive accelerator pre-dispersion rubber masterbatch particles for rubber and preparation method of particles

A pre-dispersed masterbatch and accelerator technology, applied in the field of rubber additives, can solve problems such as worker and environmental damage, physical property degradation, poor appearance, etc., achieve excellent yellowing resistance, improve yellowing, and reduce production costs Effect

Inactive Publication Date: 2016-06-08
GUANGDONG DUBA NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the rubber product industry, especially the shoe material industry, when the product is placed for a period of time or used, it is prone to yellowing due to external factors, such as sunlight and ultraviolet rays, which is also a phenomenon of aging. Not only will it cause poor appearance, but it will also cause some physical properties to decline; and the rubber anti-yellowing accelerator used by many companies is powder, which is easy to cause damage to workers and the environment

Method used

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  • Anti-yellowing comprehensive accelerator pre-dispersion rubber masterbatch particles for rubber and preparation method of particles
  • Anti-yellowing comprehensive accelerator pre-dispersion rubber masterbatch particles for rubber and preparation method of particles

Examples

Experimental program
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Effect test

Embodiment 1

[0015] The anti-yellowing comprehensive accelerator pre-dispersed masterbatch for rubber in Example 1 consists of: 60 parts of thiazole accelerators, 8 parts of dithiocarbamate accelerators, 10 parts of brighteners, 10 parts of softeners, processed 2 parts of additives, 10 parts of rubber matrix.

[0016] The preparation method of this pre-dispersed masterbatch is as follows figure 1 shown, including the following steps:

[0017] S1 internal mixing step: Preheat the internal mixer to 50-65°C, accurately weigh thiazole accelerators, dithiocarbamate accelerators, brighteners, softeners, processing aids and The rubber matrix is ​​put into the internal mixer for mixing, and the mixing time is about 8 to 12 minutes;

[0018] S2 Filtration step: After the raw materials are mixed, they are first sent to a filter for filtration. The filter uses a screen with a mesh size of 120 or more to filter large particles of impurities in the colloidal material, and then the material is sent to...

Embodiment 2

[0020] The composition of the anti-yellowing comprehensive accelerator pre-dispersed masterbatch particles for rubber of embodiment two: 55 parts of thiazole accelerators, 10 parts of dithiocarbamate accelerators, 12 parts of brighteners, 10 parts of softeners, 2 parts of processing aids, 11 parts of rubber matrix; the preparation method of the masterbatch is the same as that of Example 1; the anti-yellowing comprehensive accelerator pre-dispersed masterbatch of Example 2 is obtained. After testing, the masterbatch has a density of 1.35g / cm2 at 20°C 3 , Mooney viscosity ML (1+4) min, 50 ℃ is 44.82.

Embodiment 3

[0021] The composition of the anti-yellowing comprehensive accelerator pre-dispersed masterbatch particles for rubber of embodiment three: 50 parts of thiazole accelerators, 10 parts of dithiocarbamate accelerators, 15 parts of brighteners, 12 parts of softeners, 3 parts of processing aids, 10 parts of rubber matrix; the preparation method of the masterbatch is the same as that of Example 1; the anti-yellowing comprehensive accelerator pre-dispersed masterbatch of Example 3 is obtained. After testing, the density of the masterbatch at 20°C is 1.34g / cm 3 , Mooney viscosity ML (1+4) min, 50 ℃ is 45.45.

[0022] experimental method:

[0023] 1. Experimental basic formula:

[0024] NR:15phr

[0025] SBR:35phr

[0026] BR: 50phr

[0027] Silica: 40phr

[0028] Titanium dioxide: 10phr

[0029] Zinc oxide: 5phr

[0030] Stearic acid: 1phr

[0031] Polyethylene glycol: 3phr

[0032] Antioxidant BHT: 1phr

[0033] Sulfur: 2phr

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Abstract

The invention discloses anti-yellowing comprehensive accelerator pre-dispersion rubber masterbatch particles for rubber. The particles are prepared from, by weight, 8-15 parts of rubber matrix, 50-60 parts of thiazole accelerator, 5-10 parts of dithiocar-bamate accelerator, 8-15 parts of brightening agent, 8-12 parts of softener, 1-3 parts of processing agent, 1-4 parts of antioxidant, 4-8 parts of filler and 1-3 parts of physical protective agent. A preparation method includes the steps of firstly, conducting mixing, wherein certain ratios of thiazole accelerator, dithiocar-bamate accelerator, brightening agent, softener, processing agent, anti-ageing agent, filler and physical protective agent are put in an internal mixer to be mixed for about 30 seconds, rubber matrix is added, the temperature is 50-65 DEG C, and time is 8-12 minutes; secondly, conducting granulating, wherein the materials are sent into a granulator to be granulated after being mixed. The pre-dispersion rubber masterbatch particles have the advantages of being easy to disperse, free of pollution, high in machinability and the like when used for preparing rubber materials, and the anti-yellowing effect of rubber is quite good.

Description

technical field [0001] The invention relates to a rubber auxiliary agent, in particular to a pre-dispersed masterbatch particle of a comprehensive anti-yellowing accelerator for rubber and a preparation method thereof. Background technique [0002] In the rubber product industry, especially the shoe material industry, when the product is placed for a period of time or used, it is prone to yellowing due to external factors, such as sunlight and ultraviolet rays, which is also a phenomenon of aging. Not only will it cause poor appearance, but it will also cause some physical properties to decline; and the rubber anti-yellowing accelerator used by many companies is powder, which is easy to cause damage to workers and the environment. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a pre-dispersed masterbatch of anti-yellowing comprehensive accelerator for rubber and a preparation method thereof. The anti-yellowing ...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L23/08C08L91/00C08K13/02C08K5/47C08K5/39C08K3/22C08K5/09
CPCC08L23/16C08L2201/08C08L2205/03
Inventor 陈颖
Owner GUANGDONG DUBA NEW MATERIAL CO LTD
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