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Shell powder-natural rubber composite material and preparation method thereof

A composite material and natural rubber technology, which is applied in the fields of natural rubber composite materials and their preparation, shell powder-natural rubber composite materials and their preparation fields, can solve the problems of unpleasant smell, breeding mosquitoes, affecting the lives of villagers, etc., and achieves moisture resistance. Good sliding performance, not easy to generate heat, easy to operate

Inactive Publication Date: 2012-12-26
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

[0031] Preparation of Shell Powder-Natural Rubber Composite Material and Its Vulcanized Film

[0032] Weigh 15 parts of shell powder with a particle size of about 200nm, add ethanol that just soaks it and rinse it with deionized water, 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 80°C for 4 hours, then take it out to cool and wash by centrifugation, then add 0.4 parts of sodium dodecylbenzenesulfonate and 100 parts of deionized water to the shell powder obtained after washing, and ultrasonically disperse for 30 hours while stirring. 100 parts of concentrated natural rubber latex with a total solid content of 60% based on dry glue is stabilized by using 0.5 part of fatty alcohol polyoxyethylene ether, and then 0.1 part of potassium hydroxide is added. Under the condition of continuous stirring, the above-mentioned shell powder water dispersion is evenly mixed into the stabl...

Embodiment 2

[0035] Weigh 30 parts of shell powder with a particle size of about 200 nm, add ethanol that just soaks it, rinse it with deionized water, then add 1.5 parts of rare earth coupling agent DN-8102 and 1.5 parts of tetraethylene pentadiamine, set Stir continuously in a water bath at 80°C for 4 hours, then take it out to cool and wash by centrifugation, then add 0.4 parts of sodium dodecylbenzenesulfonate and 100 parts of deionized water to the shell powder obtained after washing, and ultrasonically disperse while stirring 30 minutes, made shell powder aqueous dispersion; Adopt 0.5 part of fatty alcohol polyoxyethylene ether simultaneously to 100 parts of concentrated natural rubber latex that total solid content is 60% with dry glue to carry out stabilization, under constant stirring condition, above-mentioned shell The powder-water dispersion is uniformly mixed into the stable concentrated natural rubber latex, and after uniform stirring, it is coagulated with acetic acid, presse...

Embodiment 3

[0038]Weigh 40 parts of shell powder with a particle size of about 200 nm, add ethanol that just soaks it, rinse it with deionized water, then add 2.5 parts of rare earth coupling agent DN-8102 and 1.5 parts of tetraethylene pentadiamine, set 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 natural rubber, and put it on an open rubber mixing machine Add the above shell powder powder, and 3 parts of paraffin base oil, 3.5 parts of sulfur, 5.0 parts of zinc oxide, 1.0 parts of stearic acid, 1.2 parts of mercaptobenzothiazole (accelerator M), 0.5 parts of 2,6-di Tert-butyl-4-methylphenol (anti-264), vulcanized at 150°C after mixing evenly. The obtained vulcanized rubber sheet had a tensile strength of 21.8MPa, a tear strength of 38.3kN / m, an elongation at break of 760%, a 300% modulus of 5.0MPa, and a heat gen...

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Abstract

The invention relates to a shell powder-natural rubber composite material and a preparation method thereof. The composite material comprises shell powder or modified shell powder, a coupling agent, an anionic surfactant, a nonionic surfactant, milky natural rubber based on dry glue and a cross linker, and can contain fatty alcohol-polyoxyethylene ether, potassium hydroxide and paraffin-based oil or pigment. The preparation method comprises the following steps of: (1) preparing aqueous dispersion of the shell powder; (2) preparing a shell powder-natural rubber composite material in a latex state; and (3) preparing the shell powder-natural rubber composite material in a dry glue state. The tensile strength of the composite material is 20 to 28MPa, the elongation at break can reach 700 to 980 percent, 300 percent stress at definite elongation can reach 2.0 to 5.0MPa, the tearing strength is 36 to 45kN / m, and the heat generation performance is within 13 DEG C. The material has high tearing resistance, tensile resistance and slippery resistance, difficultly produces heat, has antibacterial performance, and can be applied to natural rubber products such as medical gloves, tires, rubber tubes and shoes.

Description

technical field [0001] The invention relates to a natural rubber composite material and a preparation method thereof, in particular to a shell powder-natural rubber composite material and a preparation method thereof, belonging to the technical field of rubber composite material production. Background technique [0002] Due to the large free volume, small intermolecular force, and poor crystallization ability, most rubbers will not be able to achieve the purpose of application if they are not reinforced. Therefore, since the industrial application of rubber, people have been committed to the research on the mechanism of rubber reinforcement and related technologies. From zinc oxide to carbon black, to the development and application of various filling reinforcing agents and related technologies, finding efficient, simple and economical reinforcing methods and reinforcing agents has always been the focus and hotspot of rubber scientific research. [0003] The shell is a chea...

Claims

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Application Information

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IPC IPC(8): C08L7/02C08L5/08
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
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