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Preparation method of hydroxyethyl methylacrylate rubber grafted and modified clay-enhanced natural rubber composite material

A technology of hydroxyethyl methacrylate and natural rubber, applied in the field of rubber composite material production, can solve problems such as poor rubber reinforcement effect, and achieve the effect of improving dispersion effect

Inactive Publication Date: 2014-02-05
AGRI PRODS PROCESSING RES INST CHINESE ACAD OF TROPICAL AGRI SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to solve the problem of poor reinforcing effect of pottery clay treated with traditional modifiers, by using hydroxyethyl methacrylate rubber latex with strong polarity and active hydroxyl groups to graft and modify pottery clay, Utilize the excellent compatibility between hydroxyethyl methacrylate rubber latex and natural rubber latex to improve the dispersion effect of clay in natural latex and improve the reinforcing effect of clay on natural rubber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Weigh 10 parts of clay with a particle size of about 20nm, add ethanol that just soaks it and rinse it with deionized water, then add 3 parts of isopropyl titanate tristearate titanate and 0.4 parts of dodecylbenzene Sodium sulfonate and 100 parts of deionized water, stirred and ultrasonically dispersed for 30 minutes, then added 5 parts of hydroxyethyl methacrylate rubber latex with a graft rate of 5% and a total solid content of 25% based on dry rubber, and continued to use stirring ultrasonic Disperse for 30 minutes to prepare clay emulsion dispersion; simultaneously adopt 0.5 part of fatty alcohol polyoxyethylene ether to stabilize 100 parts of concentrated natural rubber latex with total solid content of 60% based on dry glue, and mix above-mentioned clay emulsion under constant stirring condition The dispersion is evenly mixed into the stable concentrated natural rubber latex, then 1.5 parts of ammonium persulfate is added dropwise, and the reaction is stirred for ...

Embodiment 2

[0046] Weigh 60 parts of clay with a particle size of about 60 nm, add ethanol that just soaks it and rinse it with deionized water, then add 4 parts of isopropyl titanate tristearate titanate and 0.5 parts of dodecyl Sodium benzenesulfonate and 100 parts of deionized water were stirred and ultrasonically dispersed for 30 minutes, and then 30 parts of hydroxyethyl methacrylate rubber latex with a grafting rate of 50% and a total solid content of 20% were added in terms of dry glue, and continued to use stirring ultrasonic Disperse for 30 minutes to prepare clay emulsion dispersion; simultaneously adopt 0.5 part of fatty alcohol polyoxyethylene ether to stabilize 100 parts of concentrated natural rubber latex with total solid content of 60% based on dry glue, and mix above-mentioned clay emulsion under constant stirring condition The dispersion is evenly mixed into the stable concentrated natural rubber latex, and after being evenly stirred, it is coagulated with acetic acid, pr...

Embodiment 3

[0048] Weigh 30 parts of pottery clay with a particle size of about 50 nm, add ethanol that just soaks it and rinse it with deionized water, then add 2 parts of isopropyl titanate tristearate titanate and 0.3 parts of dodecyl Sodium benzenesulfonate and 100 parts of deionized water were stirred and ultrasonically dispersed for 30 minutes, then 20 parts of hydroxyethyl methacrylate rubber latex with a graft rate of 30% and a total solid content of 20% were added in terms of dry glue, and the stirring method was continued. After ultrasonic dispersion for 30 minutes, ethanol was used for coagulation, tableting, washing, and drying to make dry colloidal hydroxyethyl methacrylate rubber grafted clay; then 100 parts of dry natural rubber and The above-mentioned dry colloidal hydroxyethyl methacrylate rubber grafted clay was blended, and then 2.0 parts of ammonium persulfate, 3.5 parts of sulfur, 6.0 parts of zinc oxide, 1.0 parts of stearic acid, 1.3 parts of benzo disulfide were add...

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Abstract

The invention relates to a preparation method of a hydroxyethyl methylacrylate rubber grafted and modified clay-enhanced natural rubber composite material. The method concretely comprises the following steps: adding clay, a proper amount of coupling agent, an anionic surfactant and milky hydroxyethyl methylacrylate rubber to deionized water, stirring and ultrasonically dispersing so as to prepare clay emulsion dispersion; simultaneously, stabilizing the milky natural rubber by adopting a proper amount of nonionic surfactant and then evenly mixing the clay emulsion dispersion into milky natural rubber; dropwise adding an initiating crosslinking agent, so as to obtain the hydroxyethyl methylacrylate rubber grafted and modified clay-natural rubber composite material in a latex state; further processing the composite materials by standardized conventional processing technologies of rubber in China, such as solidifying, tabletting, washing, drying and the like to obtain the hydroxyethyl methylacrylate rubber grafted and modified clay-natural rubber composite material in a dry glue state. The clay-natural rubber composite material prepared by the method disclosed by the invention has good performances.

Description

technical field [0001] The invention relates to a preparation method of a natural rubber composite material, in particular to a preparation method of a hydroxyethyl methacrylate rubber graft modified clay reinforced natural rubber composite material, and belongs to the technical field of rubber composite material production. Background technique [0002] Natural rubber (NR) is an important polymer material, which is not only a traditional material, but also a It is an important part of contemporary high-tech materials, and plays an irreplaceable role in the pillar industries of the national economy such as the automobile industry and high-tech fields such as electronic information, biotechnology, and aerospace. As we all know, if the vast majority of rubber is not reinforced, its comprehensive performance cannot meet the application purpose. In order to improve the tensile strength, tear strength and wear resistance of rubber, improve the processing technology and reduce th...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L7/02C08K9/04C08K3/34C08J3/24
Inventor 曾宗强余和平王启方刘宏超高新生
Owner AGRI PRODS PROCESSING RES INST CHINESE ACAD OF TROPICAL AGRI SCI
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