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Modified clay and rubber composite material preparation method

A composite material and clay technology, which is used in the field of preparing clay and rubber nanocomposite materials, can solve the problems of limiting the wide application of the melt method, hidden dangers of environmental pollution, and increasing the cost of waste liquid, and achieves a simple method, easy industrialization, and cost saving. Effect

Inactive Publication Date: 2006-04-26
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in addition to the waste caused by the incomplete utilization of raw materials, there are also great hidden dangers in environmental pollution, and at the same time, the treatment of waste liquid will inevitably increase the cost
These problems will limit the wide application of the melt method to a certain extent.

Method used

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  • Modified clay and rubber composite material preparation method
  • Modified clay and rubber composite material preparation method
  • Modified clay and rubber composite material preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Put 4 parts of hexadecyltrimethylammonium bromide (amount of 0.11*M, M is organic modifier molecular weight 363.5), and 10 parts of water (by mass ratio, water: clay=1:1) in a magnetic Stir and heat on a mixer to obtain an aqueous solution of quaternary ammonium salt, add 10 parts of clay, further stir, and mix evenly to obtain a mixed system of an organic modifier and clay. On a double-roller mill, after mixing the organic modifier and clay mixing system with 100 parts of styrene-butadiene rubber evenly, add the vulcanization system according to the conventional process, and the proportion is 5 parts of ZnO, 2 parts of SA, 2 parts of S, TT 0.2 parts, 0.5 parts of DM, 0.5 parts of D, 1.0 parts of 4010NA to obtain the compound of modified clay and styrene-butadiene rubber, and then press the normal vulcanization time T at 150°C 90 vulcanized to obtain vulcanized rubber. The X-ray diffraction curve of the sample is shown in figure 1 Middle curve (a); transmission electr...

Embodiment 2

[0034] The matrix was changed to natural rubber, and the rest of the operating conditions were the same as in Example 1 to obtain a composite of modified clay and natural rubber. Under vulcanization condition 143℃×T 90 , to obtain vulcanized rubber. The X-ray diffraction curve of the vulcanized rubber sample is shown in figure 2 Curve (a) in; transmission electron microscope photo see Figure 8 .

Embodiment 3

[0036] Change the matrix into EPDM rubber, the vulcanization system ratio is 5 parts of ZnO, 1 part of SA, 1.5 parts of S, 1 part of TT, and 0.5 part of M. The remaining operating conditions are the same as in Example 1 to obtain modified clay and three Ethylene Propylene Rubber Compound. Under vulcanization condition 160℃×T 90 , to obtain vulcanized rubber. The X-ray diffraction curve of the vulcanized rubber sample is shown in image 3 Curve (a) in.

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Abstract

The preparation process of composite material of modified clay and rubber includes mixing organic modifier aqua and clay via stirring to obtain mixed system of organic modifier and clay, and preparing composite material of clay and rubber with the mixed system of organic modifier and clay to replace organic modified clay and rubber. The mixed system of organic modifier and clay has average clay grain size smaller than 80 microns, montmorillonite content in clay not lower than 90 %, mass ratio between water and clay of 1-2, and mass ratio between clay and organic modifier of 100 to 0.11*M, where M is molecular weight of the organic modifier. The rubber matrix may be natural rubber, styrene-butadiene rubber, chloroprene rubber, or other rubber. The present invention is one simple, feasible and low cost process of preparing nanometer composite material of clay and rubber.

Description

technical field [0001] The invention relates to a method for preparing clay and rubber nanocomposite materials by using rubber as a matrix and clay by a melt method. Background technique [0002] As we all know, in most cases, rubber materials cannot be used without filling reinforcement. Zhang Liqun and others introduced in "Rubber Nano Reinforcement and Nano Composite Technology" (Synthetic Rubber Industry, 2000, 23(2): 71-77), the filler reinforcing agent for rubber should meet the following requirements: high reinforcement, high Dispersion, low density, low price. High reinforcement requires that the primary particle size of the reinforcing agent (or the particle size after being dispersed in the rubber) must be small, the dispersion should be good, and the direct or indirect contact with the macromolecules of the rubber matrix (referring to surface treatment or adding coupling to the rubber) After the combination agent, etc.) the effect is stronger. The low density i...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08K9/04C08L9/00C08L11/00C08L23/16
Inventor 吴友平马勇张立群
Owner BEIJING UNIV OF CHEM TECH
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