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Preparation method of rubber/mesoporous molecular sieve nanocomposite

A nanocomposite material and mesoporous molecular sieve technology, applied in the field of nanocomposite materials, can solve problems such as the difficulty of combining inorganic nanoparticles, achieve simplified organic modification and nanocomposite processes, reduce the pressure of shortages and price increases, and provide excellent reinforcement effect of effect

Inactive Publication Date: 2011-02-09
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problem that inorganic nanoparticles are not easy to combine with polymer matrix, and the interface between polymer matrix and inorganic nanoparticles

Method used

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  • Preparation method of rubber/mesoporous molecular sieve nanocomposite
  • Preparation method of rubber/mesoporous molecular sieve nanocomposite
  • Preparation method of rubber/mesoporous molecular sieve nanocomposite

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preparation example Construction

[0023] The preparation method of the rubber / mesoporous molecular sieve nanocomposite of the present invention comprises the following preparation steps and process conditions:

[0024] (1) Add mesoporous molecular sieve powder and modifier, and various conventional rubber compounding agents during the rubber mixing process, and mix evenly to obtain the mixed rubber.

[0025] (2) Vulcanize the above compounded rubber by a conventional rubber vulcanization method to obtain a rubber / mesoporous molecular sieve nanocomposite material.

[0026] The mass ratio of various raw materials in the present invention is: 100 parts of rubber, 0.5-20 parts of mesoporous molecular sieve powder, 0.5-10 parts of modifier, and other rubber compounding ingredients are determined according to the usual rubber formula. Among them: rubber includes one or more blends of natural rubber, various synthetic rubbers, and elastomers; modifiers include one or more of the following substances:

[0027] M...

Embodiment 1

[0041] Choose natural rubber (NR), use molecular sieve MCM-41 (with holes) as filler, and use coupling agents KH-570, KH-550, Si-69, and NDZ-01 as modifiers. The formula is shown in Table 1. Mixing on the open mill, first add molecular sieve MCM-41 (with holes) and coupling agent KH-570, KH-550, Si-69, NDZ-01 four different modifiers, and then add other compounds agent, and finally add sulfur to obtain a rubber compound. The mixed rubber is vulcanized on a flat vulcanizer, the vulcanization temperature is 150°C, and the vulcanization time is determined according to the positive vulcanization time measured by the vulcanization meter.

[0042] Table 1

[0043]

[0044] The mechanical properties of NR / MCM-41 nanocomposite vulcanizates modified with different coupling agents are shown in Table 2. As can be seen from the table, the modulus, tensile strength and hardness of NR / MCM-41 modified with different coupling agents all show different degrees of improvement, among whi...

Embodiment 2

[0052] Select styrene-butadiene rubber and molecular sieve (with holes) (SBR / MCM-41, SBR / MCM-48, SBR / SBA-15), choose molecular sieves MCM-41 (with holes), MCM-48 (with holes), SBA- 15 (porous) was used as filler, and sodium dodecyl sulfate (SDS) was used as modifier. Formula (mass ratio): SBR 100, molecular sieve variable, stearic acid 2, zinc oxide 5, accelerator CZ 1.5, antioxidant 4010A 1.5, sulfur 1.5. After SBR is masticated, three different molecular sieves and modifier SDS are added respectively, and then other compounding agents are added, and finally sulfur is added to obtain a rubber compound. The mixed rubber is vulcanized on a flat vulcanizer at a vulcanization temperature of 160°C, and the vulcanization time is determined according to the positive vulcanization time measured by the vulcanizer.

[0053] Table 4 lists the mechanical properties of SBR filled with three different molecular sieves (MCM-41, MCM-48, SBA-15) without SDS modification and SDS modificatio...

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Abstract

The invention provides a preparation method of a rubber / mesoporous molecular sieve nanocomposite and relates to the technical field of nanocomposites. The preparation method comprises the following steps of: blending rubber, mesoporous molecular sieves and a modifier in a mass ratio of 100:0.5-20:0.5-10 by mixing equipment and process; and vulcanizing the mixture by the common vulcanization process and equipment to realize in-situ modification so as to obtain the rubber / mesoporous molecular sieve nanocomposite with nano-scale dispersion, good interfacial bonding and high performance. The mesoporous molecular sieves are nano-scale mesoporous molecular sieve particles with special structures. The modifier comprises one or a mixture of more than one of methacrylate series, surfactant series and coupling agent series. The preparation method can overcome the defects of dispersion difficulty, poor interfacial bonding and difficulty in obviously improving the performance of the rubber / mesoporous molecular sieve nanocomposite and can be applied to various rubber products, rubber toughening plastic, binding agents and the like.

Description

technical field [0001] The invention relates to the technical field of nanocomposite materials, in particular to a method for preparing rubber / mesoporous molecular sieve nanocomposite materials. Background technique [0002] In the rubber industry, traditional rubber reinforcing agents are mainly carbon black fillers. Because carbon black production needs to consume a large amount of energy, it will also cause serious damage to the surrounding environment during the production process. Therefore, the research and development of non-carbon black reinforcing fillers has become an important development direction of the current rubber industry. [0003] In recent years, with the rapid development of nanotechnology, rubber / inorganic nanocomposites have opened up a new way for the research and development of non-carbon black reinforcing fillers, and have become an important development direction of current rubber science and technology. Application prospect. In recent years, t...

Claims

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Application Information

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IPC IPC(8): C08K13/06C08K9/06C08L9/06C08K7/26C08K9/10C08K9/04C08L7/00
Inventor 王娜于森方庆红张秀斌王重杨凤韩文池
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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