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Shell powder-epoxidized natural rubber composite material and preparation method thereof

A composite material and natural rubber technology, applied in the field of rubber composite material production, can solve the problems of breeding mosquitoes, bad smell, and affecting the lives of villagers, and achieves a product that is not easy to generate heat, has good anti-wet skid performance, and is simple and easy to operate. Effect

Inactive Publication Date: 2012-12-19
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

As a result, a series of environmental problems such as breeding mosquitoes and unpleasant smells have appeared, which directly affected the lives of villagers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Weigh 10 parts of shell powder with a particle size of about 200nm, add 7.5 parts of ethanol to infiltrate, then add an appropriate amount of deionization, then add 1.0 parts of rare earth coupling agent DN-8102 and 1.0 parts of tetraethylene pentadiamine, place in Stir continuously in a water bath at 70°C for 5 hours, then add 0.4 parts of sodium dodecylbenzene sulfonate, stir and ultrasonically prepare a modified shell powder aqueous dispersion with a concentration of 40%, and then add 100 parts of epoxy resin based on dry glue. 5-50% epoxidized natural rubber latex with a total solid content of 20-25% total solid content, continued to stir for 1 hour, and ultrasonically dispersed for 30 minutes to obtain a shell powder-epoxidized natural rubber composite material in a latex state;

[0015] Add 1.0 parts of sulfur, 2.0 parts of zinc oxide, 0.7 parts of zinc diethyldithiocarbamate (accelerator ZDC), 0.5 parts of zinc ethyl-phenyldithiocarbamate (accelerator PX), 0.5 pa...

Embodiment 2

[0017] Weigh 30 parts of shell powder with a particle size of about 200nm, add 15 parts of ethanol to infiltrate, then add an appropriate amount of deionization, then add 1.5 parts of rare earth coupling agent DN-8102 and 1.5 parts of tetraethylene pentadiamine, place Stir continuously in a water bath at 80°C for 4 hours, then add 0.6 parts of sodium dodecylbenzene sulfonate, stir and ultrasonically prepare a modified shell powder aqueous dispersion with a concentration of 50%, and then add 100 parts of epoxy resin based on dry glue. Epoxidized natural rubber latex with 5-50% chemical degree and 20-25% total solid content, continue to stir for 1 hour, ultrasonically disperse for 30 minutes, then add ethanol for coagulation, tabletting, washing, and drying to make a dry gel Shell powder-epoxidized natural rubber composites;

[0018] Add 1.5 parts of sulfur, 5.0 parts of zinc oxide, 1.5 parts of stearic acid, and 2.0 parts of N-oxydiethylene-2-benzothiazole sulfenamide in the ab...

Embodiment 3

[0020] Weigh 60 parts of shell powder with a particle size of about 200nm, add 15 parts of ethanol to infiltrate, then add an appropriate amount of deionization, then add 1.5 parts of rare earth coupling agent DN-8102 and 1.5 parts of tetraethylene pentadiamine, place Stir continuously in a water bath at 80°C for 4 hours, then take it out for cooling and centrifugal washing, then dehydrate and dry the shell powder obtained after washing to obtain shell powder powder; weigh 100 parts of epoxidized natural rubber, and Add the above-mentioned shell powder powder to the glue machine, as well as 1.5 parts of sulfur, 5.0 parts of zinc oxide, 1.5 parts of stearic acid, 2.0 parts of N-oxydiethylene-2-benzothiazole sulfenamide (accelerator MBS), 1.0 Parts of tetramethylthiuram disulfide (promoter TMTD), 0.3 parts of anhydrous sodium carbonate, 1.5 parts of 2,2,4-trimethyl-1,2-dihydroquinoline polymer (antiaging agent RD), 3 parts of aromatic oil, vulcanized at 155°C after mixing evenly...

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Abstract

The invention relates to a preparation method of a shell powder-epoxidized natural rubber composite material, which comprises the following steps: adding ethanol into equal weight of shell powder, adding a proper amount of water, and adding a rare-earth coupling agent (DN-8102) and tetraethylenepentamine in an ultrasonic dispersion state; continuously stirring in a water bath, adding sodium dodecyl benzene sulfonate, and stirring under ultrasonic action to obtain a modified shell powder water dispersion; and adding epoxidized natural rubber latex, continuing stirring for 1 hour, and carrying out ultrasonic dispersion for 30 minutes to obtain the latex-state shell powder-epoxidized natural rubber composite material. After adding a vulcanization processing assistant, the tensile strength of the composite material is 20-27 MPa, the elongation at break is up to 700-980%, the 300% stress at definite elongation is up to 2.0-5.0 MPa, the tearing strength is 36-45 kN / m, and the heat generation property is within 13 DEG C. The composite material has the advantages of tearing resistance, tensile resistance, slip resistance, low heat generation tendency and mold resistance, and can be used for medical gloves, tires, rubber tubes, shoes and other epoxidized natural rubber products.

Description

technical field [0001] The invention relates to an epoxidized natural rubber composite material and a preparation method thereof, in particular to a shell powder-epoxidized natural rubber composite material and a preparation method thereof, belonging to the technical field of rubber composite material production. Background technique [0002] Epoxidized natural rubber is a kind of chemically modified epoxidized natural rubber prepared by epoxidized natural rubber through epoxidation reaction. It has excellent wet skid resistance, oil resistance, adhesion, gas permeation resistance, etc. Performance, can replace butadiene rubber, nitrile rubber, butyl rubber, butyl rubber and other synthetic materials for the production of automobile tires, oil-resistant sealing products, air-tight products, as well as cord dipping, paper bonding, etc. Especially in the automotive tire industry, epoxidized natural rubber is the only polymer material that can improve the tire's wet skid resist...

Claims

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Application Information

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IPC IPC(8): C08L15/00C08K9/04C08K3/26
Inventor 曾宗强余和平彭政崔丽虹黄茂芳刘宏超
Owner AGRI PRODS PROCESSING RES INST CHINESE ACAD OF TROPICAL AGRI SCI