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Antibacterial PVC door seal for refrigerator and preparation method thereof

A technology for door seals and refrigerators, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of poor antibacterial stability and low sterilization efficiency, and achieve the effect of ensuring reliability of use and avoiding poor long-term antibacterial stability.

Inactive Publication Date: 2020-07-10
CHANGHONG MEILING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an antibacterial PVC door seal for refrigerators. By adding antibacterial agent polyhexamethylene guanidine into the formula and adjusting the ratio, the antibacterial PVC door seal is processed so that the door seal can achieve long-term antibacterial effect ; Solve the problems of poor long-term antibacterial stability and low sterilization efficiency of existing refrigerator door seals

Method used

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  • Antibacterial PVC door seal for refrigerator and preparation method thereof
  • Antibacterial PVC door seal for refrigerator and preparation method thereof
  • Antibacterial PVC door seal for refrigerator and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Get each raw material formula as follows:

[0033] 100g of PVC resin (Formosa Plastics S-70), 60g combined plasticizer (5g of ESO, 28g of polyester plasticizer PN7030, 20g of TOTM, 7g of DOS), 5g of Ca-Zn composite stabilizer, 30g calcium carbonate (LD-800), 1g of polyhexamethylene guanidine antibacterial agent, 5g of lubricant (stearic acid), 1g of antioxidant 1010, and titanium dioxide pigment.

[0034] A preparation method for an antibacterial PVC door seal for a refrigerator, comprising the following steps:

[0035] Step 1: Add the antibacterial agent, oxidant and heat stabilizer in the formula amount into the mixer and mix and stir evenly to obtain the additive mixture; you can add pigment according to customer needs to adjust the color of the door seal, the pigment is titanium dioxide pigment;

[0036] Step 2: Put the prescribed amount of PVC resin powder into the mixer, stir at a low speed for 1 minute, then add the additive mixture in step 1, and stir for 5 min...

Embodiment 2

[0041] Get each raw material formula as follows:

[0042] 100g of PVC resin (Yinglite SG-3), 68g of combined plasticizer (6g of ESO, 35g of polyester plasticizer PN7030, 20g of TOTM, 7g of DOS), 4g of Ca-Zn composite stabilizer, 32g of calcium carbonate (LD-800), 1.5g of polyhexamethylene guanidine antibacterial agent, 5g of lubricant (stearic acid and paraffin wax combination), 1g of antioxidant 1010, titanium dioxide pigment.

[0043] Preparation method: with embodiment 1.

Embodiment 3

[0045] Get each raw material formula as follows:

[0046] 100g of PVC resin (Yuhang YH-1300), 70g combined plasticizer (6g of ESO, 30g of polyester plasticizer PN7030, 27g of TOTM, 7g of DOS), 5g of Ca-Zn composite stabilizer, 35g of Calcium carbonate (LD-800), polyhexamethylene guanidine antibacterial agent of 1.6g, lubricant (stearic acid and paraffin combination) of 5g, antioxidant 1010 of 1g, titanium dioxide pigment.

[0047] Preparation method: with embodiment 1.

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Abstract

The invention discloses an antibacterial PVC door seal for a refrigerator, and relates to the technical field of refrigerator door seals. The antibacterial PVC door seal comprises the following raw materials in parts by weight: 40-50% of PVC resin powder; 30%-40% of a combined plasticizer; 0.2%-2% of an antibacterial agent; 1.5%-5% of a heat stabilizer; 15%-25% of an inorganic filler; 1%-3% of a lubricating system; and 0.2%-2% of an oxidizing agent, wherein the antibacterial agent is polyhexamethylene guanidine, and the molecular formula of the antibacterial agent is (C7H16N3Cl) n. The antibacterial agent polyhexamethylene guanidine is added into the formula, and the antibacterial PVC door seal is obtained through proportion adjustment and processing so that the door seal can achieve a long-term antibacterial effect, and the problems that theexisting refrigerator door seal is poor in long-term antibacterial stability and low in sterilization efficiency are solved.

Description

technical field [0001] The invention belongs to the technical field of refrigerator door seals, in particular to an antibacterial PVC door seal for refrigerators and a preparation method thereof. Background technique [0002] Refrigerator is an essential home appliance in our daily family. It mainly provides the function of keeping food and other substances fresh and freezing. The sealing of our refrigerator is realized by the door and the box body being sucked together by our door seal, but the refrigerator will be damaged during use. Accompanied by a large number of bacteria and molds, these microorganisms will exist on our door seals, which not only affect the appearance of the refrigerator, but also affect the hygienic performance of the refrigerator, so the hygienic antibacterial function of the door seal is also essential. [0003] At present, the vast majority of refrigerator door seals are soft PVC materials. For PVC door seals, the main components are PVC powder re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L79/00C08L67/00C08K3/26C08K5/134C08K5/12C08K3/22C08K5/09C08K13/02C09K3/10
CPCC08K2003/2241C08K2003/265C08L27/06C08L2205/03C08L2205/035C09K3/10C08L79/00C08L67/00C08K3/26C08K5/1345C08K5/12C08K3/22C08K5/09C08K13/02
Inventor 江峰吴园严桃
Owner CHANGHONG MEILING CO LTD
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