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Siallite-natural rubber composite material and method for making same

A technology of natural rubber and composite materials, which is applied in the field of silica alumina-natural rubber composite materials and its manufacturing, can solve the problems of poor anti-aging performance of masterbatches and the like, and achieve the effect of reducing production costs

Inactive Publication Date: 2008-04-09
AGRI PRODS PROCESSING RES INST CHINESE ACAD OF TROPICAL AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high content of transition metal ions such as copper and manganese in red mud clay, the aging resistance of the masterbatch is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh 100 parts of natural rubber, add 50 parts of silica-alumina, 0.5 parts of vinyltriethoxysilane and 0.5 parts of ethylenediamine, and 3.0 parts of sulfur, 5.0 parts of zinc oxide, and 1.0 parts of stearic acid in the compact machine , 1.0 parts of mercaptobenzothiazole (accelerator M), 0.5 part of diphenylguanidine (accelerator D), 1.0 part of N-phenyl-β-naline (antioxidant D), 1.0 part of hydroquinone Dibenzyl ether (antioxidant DBH), 5 parts of general carbon black, 6 parts of petrolatum, 1 part of paraffin, 12 parts of engine oil, vulcanized after mixing evenly. The tensile strength of the vulcanized rubber sheet is 18.7MPa, the elongation at break is 763%, and the modulus stress at 300 is 3.1MPa.

Embodiment 2

[0025] Weigh 60 parts of silica-alumina, add 100 parts of deionized water for swelling. Then add 0.5 part of vinyltriethoxysilane and 0.5 part of ethylenediamine, react at 45° C. for 7 hours, and carry out dehydration and drying. Weigh 100 parts of natural rubber, add the above-mentioned silica alumina in an open rubber mixer, and 3.0 parts of sulfur, 5.0 parts of zinc oxide, 1.0 parts of stearic acid, 1.0 parts of benzothiazole disulfide (accelerator DM), 0.5 parts Parts of diphenylguanidine (accelerator D), 2.0 parts of N-phenyl-β-naphthalene (antioxidant D), 5 parts of high wear-resistant carbon black, 6 parts of petrolatum, 1 part of paraffin, 12 parts of engine oil, mixing Vulcanize after uniformity. The tensile strength of the vulcanized rubber sheet is 18.0MPa, the elongation at break is 685%, and the modulus stress at 300 is 2.7MPa.

Embodiment 3

[0027] Weigh 40 parts of silica-alumina, add 100 parts of deionized water for swelling. Then add 0.4 parts of vinyltriethoxysilane and 0.5 parts of ethylenediamine, and react at 45° C. for 6 hours. Weigh 167 parts of concentrated natural rubber latex with a total solid content of 60%, and add 0.2 part of Pingping plus O to keep the latex stable. Then add the modified silica alumina under stirring. Continue to stir for 3 hours to evenly disperse the silica-alumina in the natural rubber latex, and use formic acid to coagulate, press into tablets, wash, and dry to prepare the silica-alumina composite material.

[0028] Weigh 140 parts of the above-mentioned silica-alumina-natural rubber composite material, add 3.5 parts of sulfur, 5.0 parts of zinc oxide, 1.0 parts of stearic acid, and 1.2 parts of benzothiazole disulfide (accelerator DM) on the open rubber mixer , 0.5 parts of diphenylguanidine (accelerator D), 1.5 parts of N-phenyl-β-naline (antioxidant D), 5 parts of general...

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Abstract

The invention discloses a siallite-natural rubber composite material, which can be used for making natural rubber products such as tires, hoses and shoes, etc., and a preparation method thereof. The material has the advantages of low cost, tear resistance, being stretch-proof, good moisture and slide resistance, and being difficult to generate heat. The material comprises the following components according to weight proportion: 100 parts of natural rubber or natural rubber latex calculated according to stem rubber; 10 to 60 parts of siallite; 0.1 to 2.0 parts of coupling agent, 0.1 to 1.5 parts of crosslinking agent and other processing agent. The preparation method comprises steps that: the natural rubber is used as a raw material; the siallite is evenly dispersed on the natural rubber in routine combining, mixing or coprecipitating processes to make the siallite-natural rubber composite material; the composite material can be vulcanized by adopting routine technique.

Description

1. Technical field [0001] The invention relates to a silica-alumina-natural rubber composite material and its manufacturing technology. 2. Background technology [0002] During the processing of natural rubber, a certain amount of filler must be added, the purpose of which is: 1) to meet the requirements of rubber product processing technology; 2) to reinforce rubber and improve the mechanical properties of rubber products; 3) to reduce production costs . At present, the fillers widely used in the rubber industry mainly include carbon black, silica, fiber, clay, calcium carbonate, etc. Among them, fillers such as carbon black, white carbon black, and fiber have different degrees of reinforcing effect on rubber, but they are expensive and easy to generate heat. Inorganic fillers such as pottery clay and calcium carbonate have low prices and are not easy to generate heat, but they do not have a reinforcing effect on natural rubber. After adding inorganic fillers such as cal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08K5/54C08K3/34C08K5/17
Inventor 余和平王启方曾宗强黄茂芳
Owner AGRI PRODS PROCESSING RES INST CHINESE ACAD OF TROPICAL AGRI SCI
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