Thermoplastic vulcanized rubber material for dish washer sealing strip and preparation method

A technology of thermoplastic vulcanization and rubber materials, which is applied in the field of thermoplastic vulcanized rubber materials and preparations for dishwasher sealing strips. It can solve the problems of unstable vulcanization and foaming processes, high cost of sealing strips, and complicated processing processes, and improve the anti-oxidative degradation performance. , Good dimensional stability and good mechanical properties

Inactive Publication Date: 2018-12-25
ANHUI HIGASKET PLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are the following disadvantages in the sealing strip material for dishwashers: 1. The foamed EPDM material needs to be vulcanized and foamed successively, and the processing process is complicated; 2. For EPDM ( EPDM) material, its vulcanization and foaming process are unstable, the scrap rate is high, and the molded material cannot be processed again, resulting in the cost of EPDM type sealing strip being higher than other materials

Method used

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  • Thermoplastic vulcanized rubber material for dish washer sealing strip and preparation method
  • Thermoplastic vulcanized rubber material for dish washer sealing strip and preparation method
  • Thermoplastic vulcanized rubber material for dish washer sealing strip and preparation method

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preparation example Construction

[0018] Adopt the above-mentioned a kind of preparation method that is used for the thermoplastic vulcanized rubber material of dishwasher sealing strip, its specific steps are:

[0019] Step 1: Weighing: Accurately weigh each component according to the range of parts in claim 1;

[0020]Step 2: Mixing and banburying: Accurately weighed EPDM rubber, polypropylene, elastomer, part of filling oil, compatibilizer, anti-aging agent, lubricant, anti-aging agent according to the range of parts in claim 1 Put the fungicide and processing aid into the high-speed mixer. The speed of the high-speed mixer is set at 500-800r / min, and the mixing time is 10 minutes. After the mixing is completed, put the mixture into the internal mixer for internal mixing. The banburying temperature is set to 120-170°C, and the banburying time is set to 15-30min to obtain the premix;

[0021] Step 3: Mastication: After mixing the premix obtained in Step 2 with the vulcanizing agent accelerator, put it into ...

Embodiment 1

[0024] A kind of thermoplastic vulcanized rubber material used for dishwasher sealing strips weighs (weight) according to the following material parts among the present invention:

[0025] (Table 1:)

[0026] EPDM

100 copies

Homopolypropylene

30 copies

Ethylene-octene copolymer

20 copies

white oil

50 copies

PP-g-MA

5 copies

sulfur

2 copies

Accelerator NS

1 copy

Antiaging agent RD

0.3 parts

stearic acid

3 copies

DCOIT

0.2 parts

Processing aids

3 copies

[0027] The EPDM rubber, homopolypropylene, ethylene-octene copolymer, part of white oil, compatibilizer PE-g-MA, anti-aging agent RD, stearic acid after accurate weighing according to (Table 1:) , the antifungal agent DCOIT and processing aids are put into the high-speed mixer, the speed of the high-speed mixer is set at 500-800r / min, and the mixing time is 10min. After the mixing is completed, put the ...

Embodiment 2

[0031] (Table 2:)

[0032] EPDM

100 copies

Homopolypropylene

30 copies

Ethylene-octene copolymer

20 copies

white oil

50 copies

PE-g-MA

5 copies

lead monoxide

6 servings

Accelerator TMTD

1.5 servings

Antiager AW

0.5 parts

PE wax

2 copies

Oleamide

2 copies

OBPA

0.2 parts

Processing aids

2.7 servings

[0033] The EPDM rubber, homopolypropylene, ethylene-octene copolymer, part of white oil, compatibilizer PE-g-MA, anti-aging agent AW, PE wax, Put oleic acid amide, antifungal agent (OBPA) and processing aid into the high-speed mixer. The speed of the high-speed mixer is set at 500-800r / min, and the mixing time is 10min. After the mixing is completed, put the mixture into the internal mixer The internal mixing is carried out, the internal mixing temperature of the internal mixer is set to 120-170°C, and the internal mixing time is set to 15-30min...

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Abstract

The invention discloses a thermoplastic vulcanized rubber material for a dish washer sealing strip and a preparation method. The thermoplastic vulcanized rubber material is composed of EPDM rubber, polypropylene, elastomer, filling oil, compatilizer, vulcanizer, accelerant, antiager, lubricant, mildewproof agent and processing aid. The preparation method includes following steps: weighing, mixingbanburying, plastifying, and extrusion molding. The material is high in oil resistance, good in mechanical performance, high in light resistance, high resistance to aging contraction, extremely easy to process, high in forming rate, low in energy consumption, high in sealability, long in service life, free of phthalate, free of peculiar smell during production and processing, harmless to human body, supportive of secondary processing, high in size stability and suitable for being popularized and used in making the dish washer sealing strip.

Description

technical field [0001] The invention relates to the field of thermoplastic vulcanized rubber materials and preparation methods, in particular to a thermoplastic vulcanized rubber material used for dishwasher sealing strips and a preparation method. Background technique [0002] Conventional dishwasher seals are usually prepared from ethylene propylene diene monomer (EPDM). The EPDM material has excellent heat resistance, good aging resistance, and good compression deformation performance. However, there are the following disadvantages in the sealing strip material for dishwashers: 1. The foamed EPDM material needs to be vulcanized and foamed successively, and the processing process is complicated; 2. For EPDM ( EPDM) material, its vulcanization and foaming process are unstable, the scrap rate is high, and the formed material cannot be processed again, resulting in the cost of EPDM rubber (EPDM) type sealing strip being higher than other materials. [0003] Compared with th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L23/12C08L91/06C08L23/08C08L51/06
CPCC08L23/16C08L2205/035C08L23/12C08L91/06C08L23/0815C08L51/06C08L23/0853
Inventor 刘瑞魏锋潘成许稳强张远
Owner ANHUI HIGASKET PLASTICS CO LTD
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