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Method for optimizing physical properties of emulsion polymerized styrene-butadiene rubber

A technology of emulsion polystyrene butadiene rubber and styrene butadiene rubber, which is applied in the field of styrene butadiene rubber processing to achieve the effect of optimizing physical properties and improving market competitiveness

Pending Publication Date: 2022-03-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no improvement in the quality of environmentally friendly EPSBR under the premise of the original polymerization process

Method used

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  • Method for optimizing physical properties of emulsion polymerized styrene-butadiene rubber
  • Method for optimizing physical properties of emulsion polymerized styrene-butadiene rubber
  • Method for optimizing physical properties of emulsion polymerized styrene-butadiene rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] In the first step, the crosslinker WY988 is ball milled and formulated into an emulsion. The ball milling time is 20 hours, and the ball milling formula is: WY98850 parts; 24.2 parts of deionized water; 0.8 parts of potassium hydroxide; 25 parts of casein.

[0037] In the second step, the prepared emulsion is added together with the anti-aging agent when the emulsion polystyrene butadiene rubber is added, and the amount added is 0.05 parts of the auxiliary agent obtained in the first step for every 100 parts of latex. Then carry out demulsification and drying to obtain emulsion rubber particles.

[0038] The third step is to mix and vulcanize ESBR1502E according to the national standard, and the obtained data are shown in Table 1.

Embodiment 2

[0040] This example is carried out using a method similar to that of Example 1. The difference is that the ball milling time is 5 hours.

Embodiment 3

[0042] This example is carried out using a method similar to that of Example 1. The difference is that the ball milling time is 15 hours.

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Abstract

The invention belongs to the technical field of styrene-butadiene rubber processing, and particularly relates to a method for optimizing the physical property of emulsion polymerized styrene-butadiene rubber. The method comprises the following steps: adding a rubber additive into latex of styrene-butadiene rubber, and then carrying out demulsification and drying to obtain emulsion polymerized styrene-butadiene rubber particles; wherein the rubber additive is prepared from the following raw materials in parts by weight: 20-60 parts of one or two of an accelerant and a cross-linking agent; 20 to 60 parts of casein; 20 to 60 parts of deionized water; 1-10 parts of potassium hydroxide; the sum of the parts of the raw materials is 100. The method provided by the invention can effectively improve the physical properties of the emulsion polymerized styrene-butadiene rubber, and especially improves 300% stretching of the emulsion polymerized styrene-butadiene rubber at 145 DEG C for 35 min.

Description

technical field [0001] The invention belongs to the technical field of styrene-butadiene rubber processing, and in particular relates to a method for optimizing the physical properties of emulsion polystyrene-butadiene rubber. Background technique [0002] EPS is the general-purpose synthetic rubber variety with the highest output and largest consumption in the world. Due to its excellent physical and mechanical properties and excellent processability, EPS is widely used in industrial and civil products. [0003] At present, all countries in the world have relatively in-depth research on EPSBR, and EPSBR has also attracted attention because of its huge market. [0004] North Korea's Pusan ​​National University used acrylonitrile (AN) as a hydrophilic monomer and potassium persulfate as an initiator to carry out soap-free emulsion copolymerization of styrene and butadiene. [0005] JSR Corporation of Japan has invented a method of producing environmentally friendly emulsion...

Claims

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Application Information

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IPC IPC(8): C08J3/12C08J3/24C08L9/06C08L89/00C08K13/02C08K5/00C08K3/22C08K5/40C08K5/47C08K5/39
CPCC08J3/12C08J3/246C08K13/02C08K5/0025C08K3/22C08K5/40C08K5/47C08K5/39
Inventor 李海强华静焦胜成刘玉东李丰晓耿洁婷贾凤玲蒋秀荣邱艳平
Owner CHINA PETROLEUM & CHEM CORP