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High-strength elastic foaming material and preparation process thereof

An elastic foaming, high-strength technology, applied in the preparation of carboxylate, the preparation of ammonia-carboxylic acid reaction, the preparation of organic compounds, etc. Performance reduction and other problems, to achieve the effect of increased toughness, high strength, and improved strength

Inactive Publication Date: 2020-12-15
东莞市万里行橡胶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Nitrile rubber is widely used in the manufacture of various oil-resistant rubber products due to its high oil resistance. Due to its oil resistance, its foaming material is used for sealing oil due to its high resilience. The aging resistance and strength of the foamed material itself are low. In the prior art, nitrile rubber and polyvinyl chloride are usually compounded to achieve high strength, high resilience and aging resistance, but due to other polymer materials ( The addition of polyvinyl chloride material) makes the polymer prepared by mixing nitrile rubber and polyvinyl chloride, and its overall oil resistance will be affected, and although polyvinyl chloride has certain aging resistance, it is doped There is a large amount of nitrile rubber, so that the material will still be partially aged, so in the prior art, an anti-aging agent is usually added to the material, but the anti-aging agent is easy to disperse unevenly in the polymer, and even the phenomenon of detachment occurs, thereby causing its Reduced aging resistance

Method used

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  • High-strength elastic foaming material and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The preparation method of branched unsaturated silyl nitrile monomer is as follows:

[0029] Step 1: A condenser is installed on the reactor, and at the same time the condenser is connected to the by-product HCl absorption device, 1mol phloroglucinol and 1kg ether are added to the reactor at the same time, stirred and dissolved, and then controlled at 10°C to the reactor Add 3 mol dimethyldichlorosilane dropwise, control the dropwise addition within 2 hours, then stir the reaction for 8 hours, then add 3.3 mol ethylene glycol dropwise therein, control the dropwise addition within 1 hour, then raise the temperature to 95°C and reflux for 12 hours, reduce Obtain product A after pressure distillation removes excess reactant and solvent; Carry out infrared analysis to product A, in 3420cm -1 and 1063cm -1 Alcohol hydroxyl infrared absorption peak appeared at 1100cm -1 The infrared absorption peak of the silicon-oxygen bond appears at the place;

[0030] Step 2: Add 260g ...

Embodiment 2

[0035] The preparation method of the branched unsaturated silyl nitrile monomer is the same as that of Example 1, and the phloroglucinol used in step 1 of Example 1 is replaced by glycerin.

Embodiment 3

[0037] The preparation method of the unsaturated siliconitrile monomer is the same as in Example 1, and the phloroglucinol used in step 1 of Example 1 is replaced by hydroquinone.

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Abstract

The invention discloses a high-strength elastic foaming material which comprises the following components in parts by weight: 100 parts of hyperbranched silicon nitrile rubber, 4-5 parts of zinc oxide, 0.5-1 part of zinc stearate, 9-10 parts of carbon black, 2-2.3 parts of sulfur, 1.3-1.7 parts of an accelerant and 10-12 parts of azodicarbonamide. The hyperbranched silicon nitrile rubber is crosslinked through an antioxidant enhancer in the preparation process, so that the polymerization degree of the prepared polymer is improved, the strength of the polymer is further improved, and the prepared hyperbranched polymer has relatively high strength; meanwhile, due to the hyperbranched structure, the polymer has a large number of branched chain structures, so that the toughness of the polymeris enhanced, and the prepared hyperbranched polymer has relatively high toughness and strength.

Description

technical field [0001] The invention belongs to the field of rubber material preparation, and relates to a high-strength elastic foaming material and a preparation process thereof. Background technique [0002] Nitrile rubber is widely used in the manufacture of various oil-resistant rubber products due to its high oil resistance. Due to its oil resistance, its foaming material is used for sealing oil due to its high resilience. The aging resistance and strength of the foamed material itself are low. In the prior art, nitrile rubber and polyvinyl chloride are usually compounded to achieve high strength, high resilience and aging resistance, but due to other polymer materials ( The addition of polyvinyl chloride material) makes the polymer prepared by mixing nitrile rubber and polyvinyl chloride, and its overall oil resistance will be affected, and although polyvinyl chloride has certain aging resistance, it is doped There is a large amount of nitrile rubber, so that the mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L43/04C08K13/02C08K3/22C08K5/098C08K3/04C08K3/06C08J9/10C08F230/08C08F236/06C07F7/18C07C253/22C07C255/34C07F7/04C07D211/46
CPCC08J9/103C08J9/0095C08J9/0066C08J9/0023C08F230/085C07F7/1804C07F7/1892C07C253/22C07C255/34C07C51/353C07F7/04C07D211/46C08J2203/04C08J2343/04C08K13/02C08K2003/2296C08K5/098C08K3/04C08K3/06C07C57/42C08F236/06
Inventor 吴星肖振武黎武仕
Owner 东莞市万里行橡胶有限公司
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