Imvite/natural rubber composite and preparation method thereof

A technology of natural rubber and composite materials, which is applied in the field of montmorillonite/natural rubber composite materials and their preparation, can solve problems such as reducing the performance of composite materials, achieve the effects of reducing production costs, expanding the scope of use, and simple and efficient preparation methods

Inactive Publication Date: 2014-06-18
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the amount of exfoliated montmorillonite finally obtained by these methods is small, and even if the obtained montmorillonite has a lamellar structure, it will re-agglomerate during the preparation of rubber composites.
thereby reducing the performance of the composite

Method used

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  • Imvite/natural rubber composite and preparation method thereof
  • Imvite/natural rubber composite and preparation method thereof
  • Imvite/natural rubber composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] formula:

[0040]

[0041] Described natural rubber is natural latex, and weight solid content is 60%;

[0042] (1) Add 50 g of 10% weight concentration of graphene oxide solution to 500 g of 20% weight concentration of alkylammonium salt (octadecyltrimethylammonium chloride) modified montmorillonite suspension, At the same time, 0.5 g of Si-69 coupling agent was added, and stirred at 60° C. for 10 hours. The modified montmorillonite suspension can be obtained.

[0043] (2) Add distilled water to the natural rubber latex with a weight concentration of 60% to dilute it to a weight concentration of 10%, then add sodium stearate, add the modified montmorillonite suspension in step (1) while stirring, and keep the temperature constant The tank was raised to 60°C, and after 4 hours of reaction, the emulsion was poured out, and about 10% of CaCl was added dropwise. 2 The aqueous solution is demulsified. After it is completely demulsified into a co-precipitated gel, it i...

Embodiment 2

[0048] formula:

[0049]

[0050]

[0051] Described natural rubber is natural latex, and weight solid content is 60%;

[0052] (1) Add 10 g of 10% weight concentration of graphene solution to 25 g of 20% weight concentration of amino acid (α-amino acid) modified montmorillonite suspension, and add fatty acid coupling agent in an amount of 0.1 g The joint agent was stirred for 6 hours at a temperature of 90°C. The modified montmorillonite suspension can be obtained.

[0053] (2) Add distilled water to the natural rubber latex with a weight concentration of 60% to dilute it to a weight concentration of 11%, then add sodium stearate, add the modified montmorillonite suspension in step (1) while stirring, and keep the temperature constant The tank was raised to 62°C, and after 5 hours of reaction, the emulsion was poured out, and about 11% of CaCl was added dropwise.2 The aqueous solution is demulsified. After it is completely demulsified into a co-precipitated gel, it is...

Embodiment 3

[0058] formula:

[0059]

[0060] Described natural rubber is natural latex, and weight solid content is 60%;

[0061] (1) Add 15g of 10% weight concentration graphene solution and 5g 10% weight concentration graphene oxide solution to 100g weight concentration 20% aspartic acid modified montmorillonite suspension, while Add titanate coupling agent in an amount of 0.2 g, and stir at 80° C. for 8 hours. The modified montmorillonite suspension can be obtained.

[0062] (2) Add distilled water to the natural rubber latex with a weight concentration of 60% to dilute it to a weight concentration of 9%, then add sodium stearate, add the modified montmorillonite suspension in step (1) while stirring, and keep the temperature constant The tank was raised to 60°C, and after 4 hours of reaction, the emulsion was poured out, and about 9% CaCl was added dropwise. 2 The aqueous solution is demulsified. After it is completely demulsified into a co-precipitated gel, it is washed severa...

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Abstract

The invention discloses an imvite/natural rubber composite and a preparation method thereof. 100 parts of imvite/natural rubber comprise 5-50 parts of modified imvite by weight, wherein the modified imvite comprises the following components in parts by weight: 100 parts of organic imvite, 5-20 parts of graphene, and 0.5-2 parts of coupling agent. The imvite is dispersed in the natural rubber by a lamellar structure, thus improving both the property of the rubber composite and barrier property of the rubber material, and remarkably lowering the production cost of the rubber. The preparation method is simple and efficient, and expands the application range of the natural rubber.

Description

technical field [0001] The invention relates to a montmorillonite / natural rubber composite material and a preparation method thereof. Background technique [0002] Montmorillonite has a special lamellar structure, and the gap between layers is particularly large. Organic matter can be introduced into the interlayer to make organic montmorillonite, making the interlayer spacing larger; there are sodium, calcium, and other cations between the layers, Utilizing the exchangeability of these interlayer cations and the swellability of montmorillonite in water, some organic ions are replaced into the interlayer of montmorillonite through ion exchange reaction, so as to improve the organic wettability of montmorillonite and improve its contact with montmorillonite. The compatibility of organic matter, montmorillonite has unique properties, large chemically activated surface, high cation exchange capacity; interlayer surface with abnormal water-containing characteristics, and the abi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08K13/06C08K9/06C08K9/02C08K9/04C08K3/34C08K5/09C08K5/098C08K3/22C08K3/06C08K5/31C08K5/47C08K5/3437C08K5/18B29C35/02
Inventor 王继虎温绍国苏月周超汪鹏主殷常乐杜中燕张栋栋
Owner SHANGHAI UNIV OF ENG SCI
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