Nitrile rubber/nylon thermoplastic elastomer and preparation method thereof

A technology of thermoplastic elastomer and nitrile rubber, which is applied in the field of thermoplastic elastomer, can solve the problems of poor mechanical properties and achieve the effect of easy processing

Active Publication Date: 2019-08-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a new acrylonitrile-butadiene rubber / nylon thermoplastic elastomer with good mechanical properties in order to overcome the relatively poor mechanical properties of the nitrile rubber / nylon alloy provided by the prior art.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] In order to make the nitrile rubber / nylon thermoplastic elastomer of the present invention have more excellent tensile strength, abrasion resistance and excellent solvent resistance, the present invention provides the preferred preparation method as described in the second aspect above to prepare the present invention. Nitrile rubber / nylon thermoplastic elastomer, the method includes:

[0025] (1) Component A containing nitrile rubber, anti-aging agent and auxiliary agent is first mixed to obtain a masterbatch; and component B containing nylon and antioxidant is melt-plasticized to obtain the first mixture ;

[0026] (2) Melt blending the first mixture and the masterbatch to obtain a compound;

[0027] (3) Extruding and granulating the mixing material to obtain mixing material granules;

[0028] (4) Perform dynamic vulcanization and granulation of the mixing material granules and component C containing a vulcanizing agent.

[0029] The amount of each component involv...

Embodiment 1

[0048] According to the formulation shown in Table 1, the elastomer P1 was obtained by processing according to the following processing method.

[0049] (1) At 40°C, sequentially add nitrile rubber, anti-aging agent RD, and additives (liquid paraffin and stearic acid, and the weight ratio of liquid paraffin and stearic acid is 1:0.2) into the double-roller kneading machine In, blending 10min, obtain masterbatch;

[0050] (2) When the rotor speed of the internal mixer is 70rpm and the blending temperature is 180°C, add nylon, antioxidant 1010 and antioxidant 168 (the weight ratio of antioxidant 1010 and antioxidant 168 is 1:1 ), melted and plasticized for 2 minutes, then added the prepared masterbatch, and melted and blended for 4 minutes to obtain a compound; the compound was extruded through a single-screw extruder at a screw speed of 100 rpm and an extrusion temperature of 180 ° C. Pelletizing to obtain mixed material granules;

[0051] (3) A co-rotating twin-screw extruder ...

Embodiment 2

[0053] According to the formula shown in Table 1, the elastomer P2 was obtained by processing according to the following processing method.

[0054] (1) At 45°C, sequentially add nitrile rubber, anti-aging agent MB, and additives (liquid paraffin and polyethylene wax, and the weight ratio of liquid paraffin and polyethylene wax is 1:0.5) into the double-roller kneading machine In, blending 8min, obtain masterbatch;

[0055] (2) When the rotor speed of the internal mixer is 60rpm and the blending temperature is 160°C, add nylon, antioxidant 1010 and antioxidant 626 (the weight ratio of antioxidant 1010 and antioxidant 626 is 1:2 ), melted and plasticized for 4 minutes, then added the prepared masterbatch, and melted and blended for 8 minutes to obtain a compound; the compound was extruded through a single-screw extruder at a screw speed of 80 rpm and an extrusion temperature of 160 ° C. Pelletizing to obtain mixed material granules;

[0056] (3) A co-rotating twin-screw extru...

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Abstract

The invention relates to the field of thermoplastic elastomers, and discloses a nitrile rubber / nylon thermoplastic elastomer and a preparation method thereof, wherein the thermoplastic elastomer contains a nitrile rubber, nylon, a vulcanizing agent, an anti-aging agent, an antioxidant and an auxiliary agent, the vulcanizing agent is an organic peroxide, and the organic peroxide is at least one selected from dicumyl peroxide, bis(t-butylperoxyisopropyl)benzene, t-butyl cumene peroxide, 2,5-bis(t-butyl peroxy)-2,5-dimethyl-3-hexyne, 2,5-bis-(tert-butyl peroxy)-2,5-dimethyl hexane, dibenzoyl peroxide, tert-butyl peroxybenzoate, and di-tert-butyl peroxide. According to the present invention, the nitrile rubber / nylon thermoplastic elastomer has characteristics of high elasticity, easy processing, repeated processing and the like, and can be used for vehicle oil pipelines and sealing components.

Description

technical field [0001] The invention relates to the field of thermoplastic elastomers, in particular to a nitrile rubber / nylon thermoplastic elastomer and a preparation method thereof. Background technique [0002] Nitrile rubber / nylon thermoplastic elastomer is a material prepared from nitrile rubber and nylon through dynamic vulcanization reaction technology. The material has excellent mechanical properties, processing properties and oil resistance. [0003] Both nitrile rubber and nylon have polar groups, and the surface energies of the two match, and they have good blending compatibility. The thermoplastic elastomer materials prepared by the dynamic vulcanization process of the two have good tensile strength, resistance Abrasion resistance and excellent solvent resistance, high elasticity, easy processing and repeated processing, etc., can be applied to automobile oil pipelines and sealing parts. [0004] CN104672551A discloses acrylonitrile-butadiene rubber / nylon 66 al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L77/02C08K5/14
CPCC08L9/02C08L2205/03C08L2205/035C08L2207/04C08L77/02C08K5/14
Inventor 李洪真王超吕鹏飞吴卫东
Owner CHINA PETROLEUM & CHEM CORP
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