Thermoplastic vulcanized rubber based on polylactic acid, and preparation method thereof

A technology of thermoplastic vulcanization and polylactic acid, which is applied in the field of polymer materials, can solve problems such as the unclear influence of polyester elastomer rubber properties, and achieve the effects of low cost, high biomass content, and high strength

Active Publication Date: 2014-11-05
上海英华辰睿新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Good degradability is the advantage of polyester elastomers, but the impact of degradation on the rubber properties of polyester elastomers during TPV use is not yet clear

Method used

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  • Thermoplastic vulcanized rubber based on polylactic acid, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 300 g of ethylene-vinyl acetate rubber with a vinyl acetate content of 50%, 3 g of dicumyl peroxide, 2.5 g of 2,2,6,6-tetramethylpiperidine-nitrogen-oxide, 2,2, 2.5 g of 4-trimethyl-1,2-dihydroquinoline polymer was mixed with an internal mixer for 10 minutes to obtain a rubber compound (blending conditions: the temperature was 80° C., and the rotor speed was 50 rpm), and then Mixed rubber and polylactic acid 200g, dibutyl sebacate 15g, 1010 antioxidant 2.5g and 168 antioxidant 0.5g obtain thermoplastic vulcanized rubber (blending condition: temperature is 170 °C, the rotor speed is 50 rpm). The thermoplastic vulcanizate was formed by hot pressing with a flat vulcanizer to obtain a 1 mm thick sheet of thermoplastic vulcanizate, which was cut into standard specimens for mechanical performance testing according to relevant standards. The test results are listed in Table 1.

Embodiment 2

[0023] 350 g of ethylene-vinyl acetate rubber with a vinyl acetate content of 70%, 7 g of 2,5-dimethyl-2,5-di(t-butylperoxy)hexane, 2,2,6,6- Tetramethylpiperidine-nitrogen-oxide 1.5g, 2,2,4-trimethyl-1,2-dihydroquinoline polymer 2.5g were mixed at 40-60°C for 10 Obtain the mixed rubber in 12 minutes, then the mixed rubber and polylactic acid 150g, dioctyl adipate 15g and 1010 antioxidant 1.5g obtain thermoplastic vulcanizate in internal mixer for 12 minutes (blending condition: temperature is 180°C, the rotor speed is 100 rpm). The thermoplastic vulcanizate was formed by hot pressing with a flat vulcanizer to obtain a 1 mm thick sheet of thermoplastic vulcanizate, which was cut into standard specimens for mechanical performance testing according to relevant standards. The test results are listed in Table 1.

Embodiment 3

[0025] 300 g of ethylene-vinyl acetate rubber with a vinyl acetate content of 50%, 6 g of 2,5-dimethyl-2,5-di(t-butylperoxy)hexane, 2,2,6,6- Tetramethylpiperidine-nitrogen-oxide 1g, 2,2,4-trimethyl-1,2-dihydroquinoline polymer 1g mixed with internal mixer for 10 minutes to obtain rubber compound (blending condition: temperature 80°C, the rotor speed is 50 rev / min), then the compounded rubber, 200g of polylactic acid, 10g of tributyl citrate, 1g of 1010 antioxidant and 1g of 168 antioxidant were melt blended in the internal mixer for 10 Minutes to obtain thermoplastic vulcanizate (blending conditions: the temperature is 180 ° C, the rotor speed is 50 rpm). The thermoplastic vulcanizate was formed by hot pressing with a flat vulcanizer to obtain a 1 mm thick sheet of thermoplastic vulcanizate, which was cut into standard specimens for mechanical performance testing according to relevant standards. The test results are listed in Table 1.

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Abstract

The invention discloses thermoplastic vulcanized rubber based on polylactic acid, and a preparation method thereof. The rubber comprises the raw materials of, by weight, 50-90 parts of ethylene-vinyl acetate rubber, 10-50 parts of polylactic acid, 0.1-3 parts of peroxide, 0.1-5 parts of a free radical stabilizing agent, 0.05-1 part of an antioxidant, 0.1-3 parts of an anti-aging agent, and 1-20 parts of a plasticizer. With the preparation method provided by the invention, the obtained thermoplastic vulcanized rubber has the characteristics of high biomass content, high strength, high elongation rate, good resilience, partial biodegradability, excellent thermoplasticity, and the like. The preparation method is simple, and industrialization can be easily realized.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a thermoplastic vulcanized rubber based on polylactic acid and a preparation method thereof. Background technique [0002] With the development of the automobile industry, the production and use of traditional rubber and plastics are increasing day by day. At the same time, a new type of polymer material, thermoplastic vulcanizate (TPV), has been rapidly developed because it combines the advantages of traditional plastics and rubber. TPV exhibits the properties of rubber at room temperature, can be melted and processed like plastic at high temperature, can be processed quickly, economically and conveniently, and can be recycled after use. It has become a very important new polymer material. [0003] Thermoplastic vulcanizate (TPV) is mainly composed of two parts, one is plastic, as the continuous phase, and the other is cross-linked rubber as the dispersed phase. At p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L31/04C08L67/04C08K5/00C08K5/14C08K5/3432C08K5/134C08K5/526C08K5/3437C08K5/18C08K5/11C08K5/12B29B7/00
CPCB29B7/00C08L23/0853C08L31/04C08L67/04C08L2201/06C08L2207/04C08K5/00C08K5/14C08K5/3435C08K5/3437C08K5/11C08K5/1345C08K5/526
Inventor 马丕明徐鹏武刘望成陈明清东为富
Owner 上海英华辰睿新材料有限公司
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