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Polyvinylidene difluoride-based thermoplastic vulcanized rubber and preparation method thereof

A polyvinylidene fluoride and thermoplastic vulcanization technology, applied in the field of polymer materials, can solve the problems of complex preparation process, high melt viscosity, unfavorable processing, etc., and achieve high strength, excellent thermoplastic performance, and good resilience

Inactive Publication Date: 2016-08-24
JIANGNAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing fluororubber products are block copolymers, the preparation process is complicated, the price is high, and the melt viscosity is high, which is not conducive to processing. It is mainly used in some relatively high-end fields

Method used

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  • Polyvinylidene difluoride-based thermoplastic vulcanized rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Ethylene-butyl acrylate-glycidyl methacrylate copolymer rubber 450g, polyvinylidene fluoride 150g, 2,2,6,6-tetramethylpiperidine-nitrogen-oxide 2.5g, 2,2,4 - 2.5 g of trimethyl-1,2-dihydroquinoline polymer was mixed with an internal mixer for 10 minutes to obtain a rubber compound (blending conditions: the temperature was 190 ° C, the rotor speed was 80 rpm), and then mixed Glue and amine vulcanizing agent 2.5g, dibutyl sebacate 15g, 1010 antioxidant 2.5g and 168 antioxidant 0.5g obtain thermoplastic vulcanized rubber (blending condition: temperature is 190 °C, the rotor speed is 80 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 property testing according to relevant standards. The test results are listed in Table 1.

Embodiment 2

[0022] Ethylene-butyl acrylate-glycidyl methacrylate copolymer rubber 450g, polyvinylidene fluoride 150g, 2,2,6,6-tetramethylpiperidine-nitrogen-oxide 2.5g, 2,2,4 - 2.5 g of trimethyl-1,2-dihydroquinoline polymer was mixed with an internal mixer for 10 minutes to obtain a rubber compound (blending conditions: the temperature was 190 ° C, the rotor speed was 80 rpm), and then mixed Glue and amine vulcanizing agent 5g, dibutyl sebacate 15g, 1010 antioxidant 2.5g and 168 antioxidant 0.5g melt blending 10min to obtain thermoplastic vulcanizate in internal mixer (blending condition: temperature is 190 ℃ , the rotor speed is 80 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 property testing according to relevant standards. The test results are listed in Table 1.

Embodiment 3

[0024] Ethylene-butyl acrylate-glycidyl methacrylate copolymer rubber 450g, polyvinylidene fluoride 150g, 2,2,6,6-tetramethylpiperidine-nitrogen-oxide 2.5g, 2,2,4 - 2.5 g of trimethyl-1,2-dihydroquinoline polymer was mixed with an internal mixer for 10 minutes to obtain a rubber compound (blending conditions: the temperature was 190 ° C, the rotor speed was 80 rpm), and then mixed Glue and amine vulcanizing agent 7.5g, dibutyl sebacate 15g, 1010 antioxidant 2.5g and 168 antioxidant 0.5g obtain thermoplastic vulcanized rubber (blending condition: temperature is 190 °C, the rotor speed is 80 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 property testing according to relevant standards. The test results are listed in Table 1.

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Abstract

The invention discloses polyvinylidene difluoride-based thermoplastic vulcanized rubber and a preparation method thereof. The polyvinylidene difluoride-based thermoplastic vulcanized rubber is composed of, by weight parts, 70-90 parts of ethylene-butyl acrylate-glycidyl methacrylate copolymer rubber, 10-30 parts of polyvinylidene fluoride, 0.5-2 parts of amine curing agent, 0.1-5 parts of free radical stabilizer, 0.05-1 part of antioxidant 0.1-3 parts of anti-aging agent and 1-20 parts of plasticizer. The thermoplastic vulcanized rubber obtained according to the preparation method has the advantages of being high in strength, large in elongation, good in resilience and excellent in thermoplasticity and the like. The preparation method is simple, and industrialization is achieved easily.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a thermoplastic vulcanized rubber based on polyvinylidene fluoride and a preparation method thereof. Background technique [0002] The current traditional rubber is made by vulcanization, which is difficult to form and process, and is not conducive to recycling and reuse, which seriously pollutes the environment. The biggest advancement of the dynamic vulcanization method is the use of low-cost existing processing methods to prepare TPE by blending a wide range of existing polymers, which has the advantage of low cost and greatly expands the variety of TPE. Compared with copolymerized TPE, TPV has the advantages of high upper limit service temperature, small compression set and resistance to hydrocarbon media. TPV exhibits the properties of rubber at room temperature, can be melted and processed like plastic at high temperature, can be processed quickly, economically a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L27/16C08K5/00C08K5/11C08K5/134C08K5/526C08K5/544
CPCC08L23/0884
Inventor 白绘宇陆佳俊王玮张胜文赵东明刘晓亚
Owner JIANGNAN UNIV
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