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SEBS elastomer composite material for high-performance refrigerator sealing strip and preparation method thereof

A technology of composite materials and thermoplastic elastomers, which is applied in the field of preparation of SEBS elastomer composite materials, can solve the problems of reducing product quality and use value, and achieve the effects of shortening welding time, simple preparation process, and good resilience

Active Publication Date: 2020-05-29
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the long-term use process, the added liquid plasticizer is easy to precipitate to the surface, reducing the quality and use value of the product

Method used

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  • SEBS elastomer composite material for high-performance refrigerator sealing strip and preparation method thereof
  • SEBS elastomer composite material for high-performance refrigerator sealing strip and preparation method thereof
  • SEBS elastomer composite material for high-performance refrigerator sealing strip and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～11

[0032] Embodiments 1 to 11: A SEBS elastomer composite material for a high-performance refrigerator sealing strip, the composition and parts by weight of its raw materials are as follows in Table 1 and Table 2:

Embodiment 1～6

[0034]

[0035]

Embodiment 7～11

[0037]

[0038]

[0039] A high-performance refrigerator sealing strip SEBS elastomer composite material, its preparation method is as follows:

[0040] The raw material components SEBS-I, SEBS-II, TPU, compatibilizer SEBS-g-NH 2 , pure monomer resin, silicone masterbatch, nano-calcium carbonate, SAN resin and antioxidant are added to the mixer in sequence, and mixed at a high speed at 60°C for 5-8 minutes to obtain a mixed material;

[0041] The above-mentioned mixed material is fed into a twin-screw extruder, melted, mixed, extruded and granulated to prepare a high-performance SEBS elastomer material for refrigerator sealing strips. Its technological conditions are as shown in table 3:

[0042] table 3:

[0043]

[0044] Table 4, the raw material composition and parts by weight of Comparative Examples 1 to 4 are as follows:

[0045]

[0046] The preparation method of the above comparative examples 1-4 adopts the same preparation method as the embodiment.

[0...

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Abstract

The invention discloses an SEBS elastomer composite material for a high-performance refrigerator sealing strip and a preparation method thereof. The composition is prepared from the following raw materials in parts by weight: 50-100 parts of a special styryl thermoplastic elastomer I (SEBS-I); 20-50 parts of a special styryl thermoplastic elastomer II (SEBS-II); 10-30 parts of polyurethane elastomer, 1-3 parts of a compatibilizer, 10-15 parts of pure monomer resin, 2-4 parts of silicone master batch, 5-12 parts of nano calcium carbonate, 1-3 parts of styrene-acrylonitrile resin SAN and 0.1-2.0parts of an antioxidant. The prepared SEBS elastomer material for the refrigerator sealing strip has the characteristics of low hardness, high strength, easiness in welding, good weather resistance,no precipitation, the simple preparation process and the like, and is a high-performance refrigerator sealing strip material with excellent comprehensive performance.

Description

technical field [0001] The invention relates to a preparation method of a SEBS elastomer composite material, in particular to a SEBS elastomer composite material for a high-performance refrigerator sealing strip and a preparation method thereof. Background technique [0002] The performance of the refrigerator sealing strip is directly related to the sealing and storage and use effect of the refrigerator. Therefore, developing a high-performance refrigerator sealing strip material has always been a hot topic in the industry. As we all know, PVC, which is considered as the second-generation refrigerator sealing strip material, has the advantages of being cheap and easy to weld, but the disadvantage is that it contains halogens and a large amount of plasticizers, has poor low temperature resistance, and is easy to harden at low temperatures; compared with the second generation Although the weldability and oil resistance of SEBS elastomer material is slightly worse than that o...

Claims

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Application Information

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IPC IPC(8): C08L53/02C08L75/06C08L83/04C08L25/12C08L57/02C08K13/02C08K3/26C08K3/36C08K5/134C08K5/526
CPCC08L53/025C08L2205/025C08L2205/035C08K2201/011C08K2003/265C08L75/06C08L83/04C08L25/12C08L57/02C08K13/02C08K3/26C08K3/36C08K5/1345C08K5/526Y02P20/10
Inventor 王立春潘刚伟孙青缪爱东
Owner NANTONG UNIVERSITY
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