Antibacterial mold-resistant PVC (Poly Vinyl Chloride) flexible composition and preparation method thereof

An antibacterial and antifungal agent and composition technology, which is applied in the field of PVC soft composition and its preparation, can solve the problems of easy discoloration of silver ions and application restrictions, and achieve high antibacterial and antifungal efficiency, good stability, and excellent production process simple effect

Active Publication Date: 2011-05-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the problem of discoloration of silver ions during processing, its application is limited.

Method used

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  • Antibacterial mold-resistant PVC (Poly Vinyl Chloride) flexible composition and preparation method thereof
  • Antibacterial mold-resistant PVC (Poly Vinyl Chloride) flexible composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041]100 parts (by mass) of PVC powder (Hangzhou Denhua Group, DH-2500), 3 to 5 parts of calcium-zinc heat stabilizer (Kaimisen Company, product grade: 5515), 0.4 parts of internal lubricant calcium stearate (Tianjin Yongchangsheng Chemical Co., Ltd., industrial grade), 0.1 part of external lubricant polyethylene wax (Beijing University of Chemical Technology Fine Chemical Factory, LPE-F), put it into a high-speed mixer, stir at a high speed until 65 ° C, and then pour it slowly Add 100 parts of plasticizer-DOP (fine chemical plant of Beijing No. 4 Chemical Factory, chemically pure) to make PVC completely absorb the plasticizer. Stir at high speed until the temperature reaches 105°C and discharge. The PVC that has absorbed the plasticizer is cooled and stirred or placed at normal temperature, and then mixed with 0.6% (based on the whole PVC blend system) antibacterial and antifungal agent 1 and 30 parts of powdered nitrile rubber P83 (French Ilio company, acrylonitrile conten...

Embodiment 2

[0044] Put 100 parts (parts by mass) of PVC powder, 3 to 5 parts of calcium zinc heat stabilizer, 0.4 part of internal lubricant calcium stearate, and 0.1 part of external lubricant polyethylene wax into a high-speed mixer, and stir at high speed until 65°C, slowly pour 100 parts of plasticizer (DOP) at this time, so that PVC can completely absorb the plasticizer. Stir at high speed until the temperature reaches 105°C and discharge. Cool and stir the PVC that has absorbed the plasticizer or place it at room temperature, then mix it with 1% antibacterial and antifungal agent 1 and 30 parts of powdered rubber P83 at room temperature.

[0045] Mastication is carried out using a two-roll mill. Weigh the pre-swelled PVC material and put it into the double-roller open mill, thin pass plasticization, the resin film is passed through the rollers, dropped on the plate, and then passed through the rolls and placed on the plate, repeat this thin pass process until the rubber material is...

Embodiment 3

[0047] Put 100 parts (parts by mass) of PVC powder, 3 to 5 parts of calcium zinc heat stabilizer, 0.4 part of internal lubricant calcium stearate, and 0.1 part of external lubricant polyethylene wax into a high-speed mixer, and stir at high speed until 65°C, slowly pour 100 parts of plasticizer (DOP) at this time, so that PVC can completely absorb the plasticizer. Stir at high speed until the temperature reaches 105°C and discharge. Cool and stir the PVC that has absorbed the plasticizer or place it at room temperature, then mix it with 1% antibacterial and antifungal agent 2 and 30 parts of powdered rubber P83 at room temperature.

[0048] Mastication is carried out using a two-roll mill. Weigh the pre-swelled PVC material and put it into the double-roller open mill, thin pass plasticization, the resin film is passed through the rollers, dropped on the plate, and then passed through the rolls and placed on the plate, repeat this thin pass process until the rubber material is...

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Abstract

The invention relates to an antibacterial mold-resistant PVC (Poly Vinyl Chloride) flexible composition and a preparation method thereof. The PVC flexible composition has strong performance of resisting mold and antibacterium and can be applied to sealing situations having high requirements on antibacterial mold-resistant performance, such as refrigerators and washers. The PVC flexible polymer on the basis of 100 weight percent of PVC comprises the following components: 3-5 parts of thermal stabilizer, 0.1-3 percent of antibacterial mold-resistant agent, 80-130 parts of plasticizer, 10-50 parts of powdered rubber P83, 0.2-0.6 part of inner lubricant and 0.01-0.3 part of outer lubricant. The antibacterial mold-resistant agent is a guanidyl-based polymer (polyguanidine)-polyguanidine pyrithione.

Description

[technical field] [0001] The invention relates to a PVC soft composition and a preparation method thereof. The soft composition can be used in sealing fields such as refrigerators, washing machine sealing strips and the like which require high antibacterial and antifungal properties. [Background technique] [0002] During the use of refrigerators and washing machines, their inner linings are in contact with water vapor all the year round, and it is difficult to sterilize them with light, which is easy to breed bacteria and mold. Studies have shown that mold can be killed within 3 to 10 minutes in an environment above 60°C. Therefore, various bacteria and a large number of molds that breed in the lining of the refrigerator and the inner cylinder of the washing machine will affect the stored food and cleaning equipment. Clothes pollute. In recent years, the preparation of antibacterial and antifungal lining and sealing materials has become a research hotspot in the field of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L9/02C08L79/00C09K3/10F25D23/00D06F39/00
Inventor 刘涛李杰张师军潘国元张丽英尹华邵静波张薇李魁吕明福邹浩杨庆泉徐萌陈力吕芸张浩王小兰张洪波
Owner CHINA PETROLEUM & CHEM CORP
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