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TPE (thermoplastic elastomer) material for manufacturing refrigerator sealing rubber strips and preparation process of TPE material

A sealing strip and preparation technology, applied in the field of TPE elastomers, can solve the problems of easy breeding of bacteria, high humidity, mildew of the sealing strip, etc., and achieve the effects of reducing material mildew, strong antibacterial ability, and good weather resistance

Inactive Publication Date: 2017-05-24
慈溪市山今高分子塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the sealing strip is actually applied to the refrigerator, half of the sealing strip of the refrigerator is usually inside the box, and half is exposed outside the box. The sealing strip exposed outside the box is at room temperature, and the ambient humidity is high, so it is very easy. Breeding bacteria, long-term use, due to the growth of bacteria, will lead to mildew of the sealing strip

Method used

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  • TPE (thermoplastic elastomer) material for manufacturing refrigerator sealing rubber strips and preparation process of TPE material
  • TPE (thermoplastic elastomer) material for manufacturing refrigerator sealing rubber strips and preparation process of TPE material
  • TPE (thermoplastic elastomer) material for manufacturing refrigerator sealing rubber strips and preparation process of TPE material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] (1) Select the following components and their mass parts: 100 parts of SEPS4033 and 100 parts of white oil 26#, set the speed of 600r / min in the high-speed mixer and mix for 3min;

[0049] (2) Add the following components and mass parts thereof to the material mixed in step (1): 40 parts of random copolymerized polypropylene, 200 parts of calcium carbonate, 1 part of polyquaternium salt, 2 parts of silver-loaded zeolite, 2 parts of nano-titanium dioxide, 2 parts of olive leaf extract, 5 parts of methyl methacrylate-butadiene-styrene copolymer, 4.5 parts of maleic anhydride grafted PP, 0.4 parts of stabilizer, set the speed at 1200r / min and mix for 3min ;

[0050] (3) Set the temperature inside the barrel of the twin-screw extruder with an aspect ratio of 48:1: 170°C for the first zone, 180°C for the second zone, 180°C for the third zone, 180°C for the fourth zone, 180°C for the fifth zone, and 180°C for the sixth zone ℃, seven zone 180 ℃, eight zone 180 ℃, head 180 ℃; ...

Embodiment 2

[0053] (1) Select the following components and their mass parts: 200 parts of SEPS4033 and 200 parts of white oil 32#, set the speed in the high-speed mixer at 800r / min and mix for 2min;

[0054] (2) Add the following components and mass parts thereof to the material mixed in step (1): 80 parts of random copolymerized polypropylene, 220 parts of calcium carbonate, 5 parts of polyquaternium salt, 4 parts of silver-loaded zeolite, 3 parts of nano-titanium dioxide, 3 parts of olive leaf extract, 4 parts of methyl acrylate-ethyl acrylate polymer, 5 parts of maleic anhydride grafted PP, 0.7 parts of stabilizer, set the speed at 1500r / min and mix for 2min;

[0055] (3) Set the temperature inside the barrel of the twin-screw extruder with an aspect ratio of 44:1: 170°C in the first zone, 180°C in the second zone, 180°C in the third zone, 180°C in the fourth zone, 180°C in the fifth zone, and 180°C in the sixth zone ℃, 180℃ in the seventh zone, 180℃ in the eighth zone, and 190℃ in the...

Embodiment 3

[0058] (1) Select the following components and their mass parts: 150 parts of SEPS4044 and 200 parts of white oil 26#, set the speed of rotation at 750r / min in the high-speed mixer and mix for 2.2min;

[0059] (2) Add the following components and mass parts thereof to the material mixed in step (1): 60 parts of random copolymerized polypropylene, 270 parts of calcium carbonate, 2 parts of polyquaternium salt, 3 parts of silver-loaded zeolite, 4 parts of nano-titanium dioxide, 4 parts of olive leaf extract, 1 part of methyl acrylate-ethyl acrylate polymer, 2.5 parts of maleic anhydride grafted PP, 0.6 parts of stabilizer, set the rotation speed at 1400r / min and mix for 2.2min;

[0060] (3) Set the temperature inside the barrel of the twin-screw extruder with an aspect ratio of 48:1: 170°C in the first zone, 190°C in the second zone, 190°C in the third zone, 190°C in the fourth zone, 190°C in the fifth zone, and 190°C in the sixth zone ℃, 190℃ in the seventh zone, 190℃ in the ei...

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Abstract

The invention discloses a TPE (thermoplastic elastomer) material for manufacturing refrigerator sealing rubber strips and a preparation process of the TPE material and solves the problems that sealing strips exposed to the outside of a refrigerator are located at the room temperature, the ambient environment humidity is high, bacteria breed very easily, and growth of bacteria causes the sealing strips to get mildew in long-term usage. According to the technical scheme, the TPE material for manufacturing the refrigerator sealing rubber strips is prepared from components as follows: SEPS (styrene-ethylene-propylene-styrene copolymer), white oil, polypropylene, calcium carbonate, polyquaternium, silver-loaded zeolite, nano-titania, an olive leaf extract, an impact modifier, a compatilizer and a stabilizer. The antibacterial capacity of the sealing strips is improved.

Description

technical field [0001] The invention relates to a TPE elastomer, in particular to a TPE material used in the manufacture of refrigerator seal strips and a preparation process thereof. Background technique [0002] At present, most of the sealing strips for refrigerators and freezers on the market are made of soft PVC with magnetic strips inside after extrusion molding, but the performance of PVC material itself has defects, resulting in low softness of the sealing strips , low elasticity, resulting in poor sealing and low temperature resistance of the sealing strip, and is very susceptible to the influence of environmental temperature difference, and because PVC materials need to add plasticizers in the manufacturing process, the sealing strips made of PVC materials will have certain Carcinogenic effect, affecting people's health. [0003] For this reason, TPE materials have been applied to the sealing strips of refrigerators in the prior art. TPE material is a material wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/02C08L91/06C08L23/16C08L51/06C08K13/06C08K9/12C08K3/08C08K3/26C08K3/22C08K5/1545B29B9/06B29C47/92B29C48/92
CPCC08L53/025B29B9/06B29C48/92B29C2948/9258B29C2948/92704C08K2201/011C08L91/06C08L2201/08C08L2205/035C08L2205/08C08L2207/14C08L2207/53C08L23/14C08L51/06C08K13/06C08K9/12C08K2003/0806C08K2003/265C08K2003/2241C08K5/1545
Inventor 岑建达郭运华
Owner 慈溪市山今高分子塑料有限公司
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