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Radiation sulfidization processing method for rubber

A processing method and rubber technology, which is applied in the field of radiation vulcanization of rubber, can solve problems such as complex operation process, and achieve the effects of improving vulcanization quality, ozonation resistance, and vulcanization unevenness

Inactive Publication Date: 2007-12-05
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with sulfur vulcanized rubber, radiation vulcanized rubber has the advantages of ozonation resistance, aging resistance and increased strength. At the same time, the radiation vulcanization process of rubber also has the advantages of environmental protection, energy saving, raw material saving, high production efficiency and convenient control. , but the currently used radiation vulcanization method still has disadvantages such as relatively complicated operation process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: The radiation vulcanization processing method of tire tread rubber.

[0023] 1. Hybrid radiation vulcanization processing:

[0024] Tread rubber formula: NR 70, BR 30, carbon black N375 74, aromatic oil 30, stearic acid 2; zinc oxide 4; antioxidant 4020 1.5; sulfur 1.5, diethylene glycol di(meth)acrylate 2.

[0025] Using the mixing process, the radiation cross-linking accelerator, sulfur, compounding agent, filler, etc. are evenly dispersed into the rubber matrix, the rubber is discharged, and the tread rubber is extruded.

[0026] Under normal temperature, normal pressure and air atmosphere, the electron accelerator is used to carry out radiation pre-vulcanization treatment on the extruded tread rubber. The radiation dose is 10kGy to improve the strength of the tread rubber and improve its subsequent combination, molding and re-vulcanization (heating). Structural stability during chemical vulcanization).

[0027] Place the assembled and shaped tires in...

Embodiment 2

[0033] Example 2: Radiation processing of ozonation-resistant nitrile rubber.

[0034] Formulation design: NBR 100; carbon black 50; antioxidant 2; stearic acid 0.5; sulfur 0.5; accelerator 1; diethylene glycol di(meth)acrylate 3.

[0035] Use the internal mixer to complete the mixing process of rubber material, radiation crosslinking accelerator, sulfur, compounding agent, filler, etc., deglue, extrude the product, and then vulcanize in the following three vulcanization methods.

[0036] 1. In normal temperature, normal pressure, and air atmosphere, the electron accelerator is used to carry out radiation pre-vulcanization treatment on the formed NBR glue. The radiation dose is 20kGy in total to improve the strength of the NBR glue. The shaped NBR glue is heated and chemically vulcanized, and finally completed. Full vulcanization of NBR rubber.

[0037] 2. In normal temperature, normal pressure, and air atmosphere, the electron accelerator is used to carry out one or more radia...

Embodiment 3

[0040] Example 3: Radiation processing of heat resistant neoprene.

[0041] Formulation design: CR 100; high wear-resistant furnace black 30; activated calcium carbonate 50; plasticizer TCP 10; antioxidant NBC 1; magnesium oxide 2; stearic acid 1; vulcanizing agent + accelerator 5; pentaerythritol tetra(methyl ) Acrylates 10.

[0042] Use the open mill to complete the mixing process of rubber material, radiation crosslinking accelerator, sulfur, compounding agent, filler, etc., deglue, product molding, and then vulcanize according to the following three vulcanization methods.

[0043] 1. In normal temperature, normal pressure, and air atmosphere, first apply γ-rays to irradiate the formed CR glue. The radiation dose is 50kGy in total to improve the strength of the CR glue. Then heat and chemically vulcanize the shaped CR glue, and finally Complete vulcanization.

[0044] 2. In normal temperature, normal pressure, and air atmosphere, apply γ-rays to the formed CR glue for one...

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PUM

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Abstract

The present invention relates to the application of high energy radiation technology for vulcanizing rubber, and is especially rubber radiation vulcanizing process. Raw rubber material, compounding material, stuffing and vulcanizing agent are first mixed in a double roll blending mill or a Banbury mixer to un-vulcanized rubber shapes. The un-vulcanized rubber shapes are then radiation vulcanized to form radiation vulcanized rubber, or radiation vulcanized before or after being heated and vulcanized chemically to form mixed vulcanized rubber. The present invention can provide rubber product with excellent ozone tolerance, high chap tolerance, high heat resistance and good mechanical performance, and has the advantages of saving in energy, saving in material, short vulcanizing period and high vulcanizing quality.

Description

Technical field: [0001] The invention relates to a method for applying high-energy radiation technology to a single radiation type or mixed radiation type rubber vulcanization processing technology to realize the radiation vulcanization processing method of rubber. Background technique: [0002] One of the basic processes in the production of rubber products is the vulcanization of rubber. The traditional rubber vulcanization technology is to add a certain proportion of sulfur and accelerators to the rubber compound, and then heat it. This is a vulcanization method commonly used in the rubber industry. This traditional sulfur vulcanization method also has certain defects. For example, the steam heating vulcanization process of tires requires high energy, and it is difficult to control the pre-crosslinking degree of rubber products. The rubber material becomes thinner due to heating, which is prone to Flow, resulting in unevenness of the product, wasting rubber raw materials...

Claims

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Application Information

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IPC IPC(8): C08J3/24C08J3/28C08L7/00C08L9/00C08L11/00C08L19/00C08L23/00C08L83/04C08L75/04B29C35/00
Inventor 王庆国曲斌艳
Owner QINGDAO UNIV OF SCI & TECH
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