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Nano composite material, preparation method thereof, vulcanized rubber, and applications of vulcanized rubber

A nano-composite material and vulcanized rubber technology, applied in other chemical processes, chemical instruments and methods, fibrous fillers, etc., can solve the problems of poor dispersion effect and insufficient reinforcement of rubber properties, and achieve improved mechanical properties, long service life, The effect of good compatibility

Active Publication Date: 2014-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the defects of poor dispersion effect and insufficient reinforcement of rubber properties in the prior art when a single filler is directly added to rubber, and to provide a nanocomposite material and its preparation method and a vulcanized rubber and its application

Method used

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  • Nano composite material, preparation method thereof, vulcanized rubber, and applications of vulcanized rubber

Examples

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preparation example Construction

[0032] According to another aspect of the present invention, the present invention provides a method for preparing a nanocomposite material, wherein the method includes the following steps: (1) uniformly mixing silica and halloysite nanotubes in water, and mixing The product is spray-dried to obtain a solid; (2) the solid obtained in the step (1) is mixed evenly with a surface modifier and then dried.

[0033] In the present invention, halloysite nanotubes (Halloysite, HNTs) is a natural nano-scale silicate clay mineral, which is formed by kaolinite sheets curled under natural conditions, and has a microscopic structure. Simpler silanol and siloxane bonds. Halloysite nanotubes have the same chemical composition as kaolinite with the same 1:1 SiO 2 / Al 2 o 3 ratio, its outer layer has the same SiO 2 Similar surface properties, while the inner surface properties and Al 2 o 3 resemblance.

[0034] The inventors of the present invention have found that since white carbon blac...

Embodiment 1

[0072] This example is used to illustrate the nanocomposite provided by the present invention and its preparation method and the vulcanized rubber provided by the present invention.

[0073] (1) Mix 30g of white carbon black, 15g of halloysite nanotubes and 780ml of deionized water, mechanically stir at 45°C at a stirring speed of 420rpm / min for 3.5 hours to obtain a suspension, and then spray dry and spray dry The speed of the method was 22000 rpm, and the spray drying temperature was 80° C. to obtain 42 g of solid powder.

[0074] (2) Dissolve 1.35g of methacrylic acid in 26.7ml of acetone, spray evenly on the surface of the solid powder obtained in step (1), and dry at 90°C for 3.5 hours to obtain modified silica-halloysite nano Tube nanocomposite F1, the specific surface area of ​​the obtained nanocomposite is 570m 2 / g.

[0075] (3) Mix 42g of nanocomposite F1 with 100g of EPDM rubber, 0.5g of sulfur (Henan Luoyang Yanshi Baolong Chemical Co., Ltd., the same below), 1g ...

Embodiment 2

[0082] This example is used to illustrate the nanocomposite provided by the present invention and its preparation method and the vulcanized rubber provided by the present invention.

[0083] (1) Mix 20g of white carbon black, 16g of halloysite nanotubes and 480ml of deionized water, and mechanically stir at 30°C for 2.5 hours at a stirring speed of 380rpm / min to obtain a suspension, which is then spray-dried and spray-dried The speed of the method was 18000 rpm, and the spray drying temperature was 85° C. to obtain 34 g of solid powder.

[0084] (2) Dissolve 1.44g of 3-mercaptopropionic acid in 36.7ml of acetone, spray evenly on the surface of the solid powder obtained in step (1), and dry at 95°C for 2.5 hours to obtain modified silica-elo Stone nanotube nanocomposite F2, the specific surface area of ​​the obtained nanocomposite is 600m 2 / g.

[0085] (3) Mix 34g of nanocomposite F2 with 100g of EPDM rubber, 1g of sulfur, 1.5g of dicumyl peroxide, 3g of zinc methacrylate, 1...

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Abstract

The invention discloses a nano composite material, a preparation method thereof, a vulcanized rubber, and applications of the vulcanized rubber. The nano composite material comprises white carbon black, halloysite nanotubes, and a surface modifier which is attached on the surfaces of the white carbon black and halloysite nanotubes. The preparation method of the nano composite material comprises the following steps: (1) evenly mixing white carbon black and halloysite nanotubes in water, then subjecting the evenly-mixed mixture to a spray-drying treatment so as to obtain a solid substance; (2) evenly mixing the solid substance obtained in the step (1) with a surface modifier, and finally drying so as to obtain the finished product. The vulcanized rubber provided by the invention is prepared by smelting and vulcanizing a composition comprising the nano composite material, ethylene propylene diene monomer, a vulcanizing agent, and a promoter. The vulcanized rubber has a prominently-improved mechanical property, thermostability, and creep resistance. The sealing material which is prepared from the vulcanized rubber has a long service life.

Description

technical field [0001] The invention relates to a nanocomposite material and its preparation method, a vulcanized rubber and its application. Background technique [0002] Ethylene-propylene-diene rubber (EPDM) is a terpolymer of ethylene, propylene and non-conjugated diene, which has good ozone resistance, aging resistance, corrosion resistance, heat resistance and weather resistance. EPDM rubber has low density and low cost, so it is widely used in sealing materials, advanced cable materials, automotive parts and other fields. [0003] During storage and use, sealing materials are susceptible to cumulative permanent deformation due to external heat, oxygen, and mechanical stress, resulting in loss of sealing performance and leakage accidents. Therefore, in engineering, the failure life of rubber sealing components is often regarded as the service life of the product. However, ethylene-propylene rubber as a sealing material often fails due to creep under long-term externa...

Claims

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Application Information

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IPC IPC(8): C08K9/04C08K3/36C08K3/34C09C1/28C09C1/42C09C3/08C08L23/16C08K13/06C09K3/10
Inventor 曲亮靓王丽丽李传清于国柱赵青松陈建军徐一兵李静刘苹刘翠云乔勋昌李绍宁
Owner CHINA PETROLEUM & CHEM CORP
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