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Gasoline-resistant TPE material

A technology of gasoline resistance and oil resistance additives, applied in the field of thermoplastic elastomers, can solve the problems of poor mechanical properties, poor gasoline resistance, poor high and low temperature impact properties, etc. The effect of gasoline resistance

Active Publication Date: 2022-07-12
HANGZHOU GREAT STAR IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the price of this TPE is still high, the yield is low, and the resistance to gasoline is poor, so it is in urgent need of improvement
[0003] However, most of the existing oil-resistant rubbers are nitrile rubber, neoprene and fluororubber, and their disadvantages are poor mechanical properties, large compression set, low rebound rate, rough product feel, poor high and low temperature impact performance, etc.; Some are based on SEBS, adding nitrile rubber, neoprene and fluorine rubber to improve oil resistance, for example, the Chinese invention patent with publication number CN106832832A discloses a kind of oil-resistant, cold-resistant, wear-resistant sole material and its preparation Method, the described oil-resistant, cold-resistant, wear-resistant shoe sole material is made up of following raw material: Styrene (S)-ethylene (E) / butylene (B)-styrene (S) forms block copolymer (SEBS), Thermoplastic polyurethane elastomer rubber (TPU), nitrile rubber, inorganic filler, heat stabilizer, hindered amine light stabilizer
Its disadvantage is that the compatibility between nitrile rubber itself and SEBS is extremely poor, and compatibilizers need to be added to improve compatibility, and it will greatly affect a soft and delicate element of SEBS itself, and greatly deteriorate the mechanics of the product. performance, resilience

Method used

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  • Gasoline-resistant TPE material

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] The preparation method of above-mentioned oil-resistant auxiliary agent comprises the steps:

[0033] (1) Put Ti 3 C 2 T x Prepare Ti with a concentration of 2-6 mg / mL in tetrahydrofuran solution 3 C 2 T x Dispersion, add acrylamide and then stir, and then add a mixed solution containing styrene, acrylonitrile, tert-dodecyl mercaptan and ethanol to carry out polymerization reaction. The temperature is 180~220℃ for 0.5~1h; the Ti 3 C 2 T x , the mass ratio of acrylamide, styrene and acrylonitrile is 0.1~1:10~20:25~40:25~40;

[0034] (2) adding the resultant in step (1) to a compound containing chitosan with a molecular weight of 2*10 4 ~10*10 4 In the acetic acid aqueous solution, the concentration of chitosan in the acetic acid aqueous solution of chitosan is 1-4 mg / mL, and the volume fraction of acetic acid is 3-10%; after stirring, add di-tert-butyl peroxide and maleic anhydride React at 30~60℃ for 5~8h, then slowly add molecular weight of 30*10 under stirr...

Embodiment 1

[0037] By weight, the gasoline-resistant TPE material includes the following raw materials: 40 parts SEBS rubber, 15 parts EPDM rubber, 15 parts

[0038] Polyethylene octene co-elastomer, 6 parts polypropylene, 3 parts monomer resin, 22 parts white oil and 15 parts oil resistance additives.

[0039] Among them, the content of ethylene structural units in the polyethylene octene co-elastomer is 40%, the content of octene structural units is 60%, the weight average molecular weight is 200kg / mol; the molecular weight of the monomer resin is 7000, and the glass transition temperature is Aromatic monomer resin at 130°C.

[0040] The preparation method of above-mentioned oil-resistant auxiliary agent comprises the steps:

[0041] (1) 50mg Ti 3 C 2 T x Add tetrahydrofuran solution to prepare Ti with a concentration of 5 mg / mL 3 C 2 T x Dispersion, add 1.5g of acrylamide and stir, then add a mixed solution containing 3g of styrene, 3g of acrylonitrile, 0.2g of tert-dodecyl merc...

Embodiment 2

[0044] By weight, the gasoline-resistant TPE material includes the following raw materials: 30 parts SEBS rubber, 15 parts EPDM rubber, 15 parts

[0045] Polyethylene octene co-elastomer, 8 parts polypropylene, 4 parts monomer resin, 20 parts white oil and 12 parts oil resistance additives.

[0046] Among them, the content of ethylene structural unit in polyethylene octene co-elastomer is 30%, the content of octene structural unit is 70%, the weight average molecular weight is 250kg / mol; the molecular weight of the monomer resin is 5000, and the glass transition temperature is Aromatic monomer resin at 110°C.

[0047] The preparation method of above-mentioned oil-resistant auxiliary agent comprises the steps:

[0048] (1) 50mg Ti 3 C 2 T x Ti was prepared by adding tetrahydrofuran solution with a concentration of 4 mg / mL 3 C 2 T x Dispersion, add 1.5g acrylamide and then stir, and then add a mixed solution containing 2.5g styrene, 2.5g acrylonitrile, 0.2g tert-dodecyl m...

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Abstract

The invention relates to the technical field of thermoplastic elastomers, and discloses a gasoline-resistant TPE material, which is prepared from the following raw materials in parts by weight: 30 to 40 parts of SEBS rubber, 10 to 20 parts of ethylene propylene diene monomer, 10 to 20 parts of polyethylene octylene co-elastomer, 5 to 10 parts of polypropylene, 2 to 5 parts of monomer resin, 20 to 30 parts of white oil and 9 to 18 parts of oil-resistant additive. The TPE plastic prepared by taking the SEBS thermoplastic elastomer as a matrix and cooperating with other components has good elasticity, strength and flexibility and excellent comprehensive performance; and the added oil-resistant auxiliary agent has good compatibility with the SEBS matrix and the polyolefin material while improving the gasoline resistance, and improves the overall associativity and stability.

Description

technical field [0001] The invention relates to the technical field of thermoplastic elastomers, in particular to a gasoline-resistant TPE material. Background technique [0002] With the rapid development of the economy, the enhancement of human's awareness of environmental protection and the continuous improvement of product requirements, people's demand for high-demand plastics is increasing. TPE (Thermoplastic Elastomer) is a kind of material with high elasticity, high strength and high resilience of rubber, and has the characteristics of injection molding. It is non-toxic and environmentally friendly, and has excellent colorability, weather resistance and temperature resistance. TPE has both the processing properties of thermoplastics and the physical properties of vulcanized rubber. It can be called plastic. It is a combination of advantages and the advantages of rubber, so it is occupying the territory that was originally only belonged to vulcanized rubber. However,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/02C08L23/16C08L23/08C08L23/12C08L91/00C08L27/16C08L51/02C08L25/12C08K3/14
CPCC08L53/025C08L2207/04C08L2201/08C08L23/16C08L23/0815C08L23/12C08L91/00C08L27/16C08L51/02C08L25/12C08K3/14
Inventor 李锋余闻天
Owner HANGZHOU GREAT STAR IND CO LTD
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