Rubber anti-yellowing accelerator, preparation method thereof and rubber product

An anti-yellowing accelerator and rubber technology, which is applied in the field of rubber production, can solve the problems of reducing the internal mechanical properties of rubber products, affecting the normal use of rubber products, and breaking molecular chains, so as to improve quality, service life, and yellowing resistance. Elevate, enhance the effect of action

Inactive Publication Date: 2021-08-17
佛山市丰正科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because rubber products will break the molecular chain of rubber molecules after yellowing and aging, which reduces the mechanical properties of rubber products and is prone to cracking, which affects the normal use of rubber products.

Method used

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  • Rubber anti-yellowing accelerator, preparation method thereof and rubber product
  • Rubber anti-yellowing accelerator, preparation method thereof and rubber product
  • Rubber anti-yellowing accelerator, preparation method thereof and rubber product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A kind of rubber anti-yellowing accelerator, the weight parts of each substance refer to Example 1 in Table 2, and its preparation method comprises the following steps:

[0052] Step 1: Weigh the rubber according to the set ratio, add the rubber into the mixing chamber of the internal mixer and heat it up to 65°C, then plasticate and stir the rubber under the pressure of 20MPa and the rotor speed of 30rpm until the Mooney of the rubber is reached. The viscosity is reduced to 45;

[0053] Step 2: Weigh the remaining raw material components according to the set ratio, add the remaining raw material components into the mixing chamber of the internal mixer for mixing, raise the temperature to 85 ℃, then raise the top bolt and make the internal mixing chamber. The mixture was tumbled for 8s, then lowered the top bolt and continued to mix for 4min. Finally, the temperature was raised to 95 °C, and the material was discharged to obtain a rubber yellowing resistance accelerator...

Embodiment 2

[0055] A kind of rubber anti-yellowing accelerator, the weight parts of each substance refer to Example 2 in Table 2, the difference between its preparation method and Example 1 is that the temperature in step 1 is 80 ° C, and the Mooney viscosity is 35; The temperature after adding and mixing the remaining raw material components in the second step rose to 70°C, the mixture tumbling time was 15s, the mixing time after lowering the top bolt was 6min, and the temperature was raised to 80°C.

Embodiment 3

[0057] A kind of rubber anti-yellowing accelerator, the weight parts of each substance refer to Example 3 in Table 2, the difference between its preparation method and Example 1 is that the temperature in step 1 is 70 ° C, and the Mooney viscosity is 40; The temperature after adding and mixing the remaining raw material components in the second step rose to 80°C, the mixture tumbling time was 10s, the mixing time after lowering the top bolt was 5min, and the temperature was raised to 90°C.

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Abstract

The invention relates to the field of rubber production, and particularly discloses a rubber anti-yellowing accelerant, a preparation method thereof and a rubber product. The rubber anti-yellowing accelerant comprises rubber, white carbon black, a scorch retarder, long-chain primary alkyl zinc dithiophosphate, sulfamic acid and terephthalic acid. The preparation method comprises the following steps: firstly, adding the rubber into an internal mixing chamber of an internal mixer for plastifying and stirring, then adding the remaining raw material components into the internal mixing chamber for mixing with the rubber, and discharging to obtain the rubber yellowing-resistant accelerant. The rubber yellowing-resistant accelerant is applied to rubber products. The rubber yellowing-resistant accelerant has the effects of improving the anti-yellowing performance of the rubber product and prolonging the service life of the rubber product.

Description

technical field [0001] The present application relates to the field of rubber production, more specifically, it relates to a rubber yellowing resistance accelerator and its preparation method and rubber products. Background technique [0002] Rubber is divided into natural rubber and synthetic rubber. Natural rubber is made by extracting gum from plants such as rubber trees and rubber grass, and synthetic rubber is obtained by polymerization of various monomers. Rubber products are widely used in all aspects of industry or life. [0003] Nowadays, with the rapid development of the national economy, the application scope of white, light-colored and colored rubber products has gradually expanded, so people's demand for various types of rubber products is also gradually increasing. After a period of use, the current rubber products often turn yellow. The yellowing is mainly caused by environmental factors such as sunlight, temperature, and humidity. Among them, the yellowing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L33/04C08L23/16C08K7/26C08K5/09C08K5/13C08K5/5398C08K5/092C08K3/30C08K13/04C08L21/00
CPCC08L9/02C08L33/04C08L23/16C08K7/26C08K5/09C08K5/13C08K5/5398C08K5/092C08K3/30C08K13/04C08L21/00C08L2201/08
Inventor 邓应邦袁志明
Owner 佛山市丰正科技有限公司
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