Thermoplastic elastomer particle for dish washing machine and preparation method

A thermoplastic elasticity, dishwasher technology, applied in the field of dishwasher sealing materials and preparation, can solve the problems of poor compensation of EPDM rubber materials, unstable vulcanization and foaming processes, and easy bulging of sealing strips. Good mechanical properties, improved anti-oxidative degradation performance, good sealing effect

Inactive Publication Date: 2018-11-13
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 sealing materials 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 material after molding can no longer be processed again, resulting in the cost of EPDM rubber (EPDM) type sealing strip being higher than other materials; 3 . The EPDM material before foaming has poor compensat

Method used

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  • Thermoplastic elastomer particle for dish washing machine and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Using the above-mentioned preparation method of thermoplastic elastomer pellets for dishwashers, the specific steps are:

[0021] Step 1: Weighing: Accurately weigh each component according to the number of parts in claim 1;

[0022] Step 2: Uniform mixing: Put the hydrogenated styrene-butadiene block copolymer and extender oil accurately weighed according to claim 1 into the high-speed mixer, and set the speed of the high-speed mixer to 500 -800r / min, the mixing time is 10min. After the mixing is completed, add polypropylene, ethylene-vinyl acetate copolymer, fillers, pigments, and anti-corrosion materials that are accurately weighed according to the range of parts in claim 1 Oxygen, lubricant and anti-fungal agent. At this time, the speed of the high-speed mixer is set to 1000~1500r / min, the mixing time is 5min, and the material is mixed evenly;

[0023] Step 3: Granulation: Put the uniformly mixed materials in step 2 into the twin-screw granulator for melt-shearing extrusi...

Example Embodiment

[0025] Example one:

[0026] The thermoplastic elastomer pellets used for dishwashers in the present invention are weighed (weight) as follows:

[0027] (Table 1:)

[0028] Hydrogenated styrene-butadiene block copolymer

[0029] Put the hydrogenated styrene-butadiene block copolymer and filler oil accurately weighed in accordance with (Table 1:) into the high-speed mixer. The speed of the high-speed mixer is set to 500-800r / min, and the mixing time is 10min. Add polypropylene, ethylene-vinyl acetate copolymer, fillers, pigments, antioxidants, lubricants and antifungal agents that have been accurately weighed in accordance with (Table 1:) to the materials after this mixing is completed. The rotating speed of the mixer is set to 1000~1500r / min, the mixing time is 5min, and the material is obtained by uniform mixing;

[0030] Put the uniformly mixed materials into the twin-screw granulator for melt-shearing extrusion granulation. The parameters of the twin-screw granulator are set to...

Example Embodiment

[0032] Embodiment two:

[0033] (Table 2:)

[0034] Hydrogenated styrene-butadiene block copolymer

[0035] Put the hydrogenated styrene-butadiene block copolymer and extender oil accurately weighed according to (Table 2:) into the high-speed mixer. The speed of the high-speed mixer is set to 500-800r / min, and the mixing time is 10min. Add polypropylene, ethylene-vinyl acetate copolymer, fillers, pigments, antioxidants, lubricants and anti-fungal agents that have been accurately weighed in accordance with (Table 2:) to the materials after this mixing is completed. The rotating speed of the mixer is set to 1000~1500r / min, the mixing time is 5min, and the material is obtained by uniform mixing;

[0036] Put the uniformly mixed materials into the twin-screw granulator for melt-shearing extrusion granulation. The parameters of the twin-screw granulator are set to a temperature of 170°C in the first zone, 170°C in the second zone, and a temperature in the third zone 180℃, the tempera...

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Abstract

The invention discloses a thermoplastic elastomer particle for a dish washing machine and a preparation method. The thermoplastic elastomer particle for the dish washing machine is prepared from the following components of hydrogenated styrene-butadiene block copolymer, polypropylene, ethylene-vinyl acetate copolymer, filling oil, filler, pigment, an antioxidant, a lubricant and a mildew-proof agent. The preparation method of the thermoplastic elastomer particle for the dish washing machine comprises the following steps of weighing, uniformly mixing, granulating, extruding and forming. The thermoplastic elastomer particle for the dish washing machine has the advantages that the anti-aging property is good, the oil-resistant and heat-resistant properties are good, the sealing property is good, and the service life is long; phthalate is not contained, the foreign odor is not produced in the production process, the injury to a human body is avoided, the secondary processing can be performed, the mechanical property is good, and the size stability is good; the thermoplastic elastomer particle is suitable for being popularized and applied to the manufacturing of sealing materials or sealing strips of the dish washing machine.

Description

technical field [0001] The invention relates to the field of dishwasher sealing materials and preparation methods, in particular to thermoplastic elastomer pellets used in dishwashers 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 sealing materials 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 material after molding can no longer be processed again, resulting in the cost of EPDM rubber (EPDM) type sealing strip being higher than other materials; 3 . The EPDM material before foaming has poor compensation,...

Claims

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Application Information

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IPC IPC(8): C08L91/00C08L23/12C08L53/02C08L23/08C08L23/14C08L83/04C08L23/06C08K13/02C08K3/26C08K5/134C08K5/526C08K3/22C08K5/372C08K3/34
CPCC08L91/00C08K2003/2241C08K2003/265C08L2201/08C08L2205/035C08L2207/04C08L2207/14C08L23/12C08L53/025C08L83/04C08L23/06C08K13/02C08K3/26C08K5/1345C08K3/22C08L23/14C08K3/34C08K5/372C08L23/0853C08K5/526
Inventor 刘瑞魏锋潘成许稳强张远
Owner ANHUI HIGASKET PLASTICS CO LTD
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