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Preparation method of hydrotalcite masterbatch/halogenated butyl rubber high-gas obstruction composite materials

A technology of halogenated butyl rubber and hydrotalcite mother, which is applied in the field of preparation of high-performance composite materials, can solve the problems of poor processability, weak mechanical properties, and low Mooney viscosity, and achieve improved mechanical properties, improved processability, and improved The effect of air tightness

Inactive Publication Date: 2015-09-02
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of pure halogenated butyl is high, the Mooney viscosity is low, the processability is poor, and the mechanical properties are weak

Method used

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  • Preparation method of hydrotalcite masterbatch/halogenated butyl rubber high-gas obstruction composite materials
  • Preparation method of hydrotalcite masterbatch/halogenated butyl rubber high-gas obstruction composite materials
  • Preparation method of hydrotalcite masterbatch/halogenated butyl rubber high-gas obstruction composite materials

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. prepare high-performance hydrotalcite / rubber nano-composite material of the present invention according to following raw material formula and step and comprise following raw material component by mass:

[0035] Neoprene as dry glue 100

[0036] Hydrotalcite 0.5

[0037] The preparation process is as follows:

[0038] a. Preparation of hydrotalcite suspension and floc

[0039] (1) Preparation of hydrotalcite suspension

[0040] Firstly, 0.5 g of hydrotalcite (LDHs) was taken to prepare a hydrotalcite suspension for use, and the solid content of the suspension was 1%.

[0041] (2) Preparation of flocculant

[0042] Add 30g of analytically pure CaCl to 3000g of water 2 Prepare flocculation water for use.

[0043] b. Partial raw material blending and flocculation

[0044] Put the neoprene latex into the pre-mixing stirring tank, the rubber mass is 100g in terms of dry rubber, stir and mix for 10 minutes, then add the hydrotalcite suspension prepared in step a (1),...

Embodiment 2

[0053] 1. prepare high-performance hydrotalcite / rubber nanocomposite material of the present invention according to following raw material formula and step, it is characterized in that comprising following raw material component by mass:

[0054] Rubber as dry glue 100

[0055] Hydrotalcite 5

[0056] The preparation process is as follows:

[0057] a. Preparation of hydrotalcite suspension and flocculant

[0058] (1) Preparation of hydrotalcite suspension

[0059] First, take 5 g of hydrotalcite (LDHs) to prepare hydrotalcite suspension for later use, and the solid content of the suspension is 5%.

[0060] (2) Preparation of flocculant

[0061] Add 30g of analytically pure CaCl to 3000g of water 2 Prepare flocculation water for use.

[0062] b. Partial raw material blending and flocculation

[0063] The neoprene latex is put into a pre-mixing stirring tank, and the quality of the rubber is 100g in terms of dry rubber. Stir and mix for 20 minutes, then add the hydrotalci...

Embodiment 3

[0071] 1. prepare high-performance hydrotalcite / rubber nanocomposite material of the present invention according to following raw material formula and step, comprise following raw material component by mass:

[0072] Neoprene as dry glue 100

[0073] Hydrotalcite 10

[0074] The preparation process is as follows:

[0075] a. Preparation of hydrotalcite suspension and floc

[0076] (1) Preparation of hydrotalcite suspension

[0077] First, take 10 g of hydrotalcite (LDHs) to prepare hydrotalcite suspension for later use, and the solid content of the suspension is 10%.

[0078] (2) Preparation of flocculant

[0079] Add 30g of analytically pure CaCl to 3000g of water 2 Prepare flocculation water for use.

[0080] b. Partial raw material blending and flocculation

[0081] Neoprene latex is put into the pre-mixing stirring tank, and the quality of rubber is 100g in terms of dry rubber, stirring and mixing for 30 minutes, then adding the hydrotalcite suspension prepared in s...

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Abstract

The invention relates to a preparation method of hydrotalcite masterbatch / halogenated butyl rubber high-gas obstruction composite materials. Most of rubber molecular structures lack of compactness and has large free size and is thereby easy to form air passages. Among the rubber airtight materials, halogenated butyl rubber has the best application effect but is high in cost, low in Mooney viscosity, poor in processing performance, weak in mechanical performance and the like, leading to poor application. In the prior art, a part of universal rubber and the halogenated butyl rubber are used together, reducing cost and improving processing performance and enhancing mechanical performance of the composite materials. By means of the emulsion compounding method, layered filler hydrotalcite is filled into chloroprene rubber which is excellent in processing performance and low in cost, so that universal rubber masterbatch with the excellent airtightness and mechanical performance is prepared and the airtightness materials with excellent performance is prepared by combining the universal rubber masterbatch with halogenated butyl. These materials can be widely applied to tire airtightness materials, aerospace and aviation sealing, medical sealing and the like.

Description

Technical field: [0001] The invention relates to a method for preparing a high-performance composite material based on hydrotalcite masterbatch and halogenated butyl rubber. In particular, it solves the problem that the combination of traditional masterbatch and halogenated butyl rubber leads to the reduction of the airtightness of the composite material. Background technique: [0002] Halogenated butyl rubber has gained important applications in the tire industry due to its excellent air tightness and good adhesive properties. However, the cost of pure halogenated butyl is high, the Mooney viscosity is low, the processability is poor, and the mechanical properties are weak. Most of the current solutions are to use general-purpose rubber and halogenated butyl rubber in combination to reduce costs, improve the processing performance of composite materials, and reinforce the mechanical properties. However, the addition of general-purpose rubber tends to greatly reduce the ai...

Claims

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Application Information

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IPC IPC(8): C08L11/00C08K3/22C08L23/28C08K13/02C08K5/09C08K3/04C08K3/36C08K5/01C08K3/26C08J3/22
Inventor 刘力傅恺凡张树柏李太颖段雪
Owner BEIJING UNIV OF CHEM TECH
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