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A kind of hygroscopic antibacterial silicone rubber composite material and its preparation method and application

A composite material and silicone rubber technology, applied in applications, protective clothing, clothing, etc., can solve the problems of easy injury, weakening the protective function of masks, and reducing the wearer's comfort

Active Publication Date: 2022-07-22
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) Professional protective masks, which are large in size and heavy in weight, may cause facial trauma to the wearer if used for a long time;
[0005] (2) The cover body of the replaceable protective mask is mostly made of plastic or hard material as the frame, and only the edge of the frame is sealed with a silicone ring or an annular rubber seal, which not only weakens the protective function of the mask, but also reduces the comfort of the wearer. Sex; and the material of the filter box of the replaceable protective mask is resin, which is hard and easy to hurt people, reducing the comfort of the wearer;
[0006] (3) The connection between the cover body and the filter box is not tightly sealed, resulting in a decrease in the protective performance of the mask
[0008] However, since the silicone mask fits better with the face, and the silicone rubber material is more airtight than the fiber fabric material commonly used in masks on the market, after wearing it for a long time, the moisture caused by breathing is not easy to dissipate, and it is easy to lose moisture in the mask. The production of water vapor and water droplets not only affects the wearing comfort, but also may breed bacteria and cause skin allergies

Method used

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  • A kind of hygroscopic antibacterial silicone rubber composite material and its preparation method and application
  • A kind of hygroscopic antibacterial silicone rubber composite material and its preparation method and application
  • A kind of hygroscopic antibacterial silicone rubber composite material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] (1) In parts by weight, take 110-290 parts of methyl vinyl silicone rubber, 10 parts of epoxidized methyl vinyl silicone rubber (epoxy content 15%, vinyl content 0.2%), 5 sodium polyacrylate parts, 45 parts of fumed silica, 2 parts of octamethylcyclotetrasiloxane, 0.3 parts of antibacterial agent triclosan, and 0.6 parts of double 25;

[0061] (2) The roll temperature of the double-roll mill is room temperature. After the methyl vinyl silicone rubber 110-2 is pressed into flakes by the mill at room temperature, the octamethylcyclotetrasiloxane and the gas-phase silica , Epoxidized methyl vinyl silicone rubber, sodium polyacrylate, and triclosan are added in batches, the mixing time is 30min, and the thin film is discharged;

[0062] (3) Heat treatment at 160°C for 5h;

[0063] (4) Add double-two-five to double-two-five at a temperature lower than 50 °C, and mix evenly;

[0064] (5) The silicone rubber composite material was prepared by vulcanizing a flat vulcanizer at...

Embodiment 2

[0067] (1) In parts by weight, take 110-290 parts of methyl vinyl silicone rubber, 10 parts of epoxidized methyl vinyl silicone rubber (epoxy content 15%, vinyl content 0.2%), 5 parts sodium acrylate , 40 parts of fumed silica, 2 parts of octamethylcyclotetrasiloxane, 0.3 parts of antibacterial agent triclosan; 0.6 parts of double two-five;

[0068] (2) The roll temperature of the double-roll mill is room temperature. After the methyl vinyl silicone rubber 110-2 is pressed into flakes by the mill at room temperature, the octamethylcyclotetrasiloxane and the gas-phase silica , Epoxidized methyl vinyl silicone rubber, sodium acrylate, and triclosan are added in batches, the mixing time is 30 minutes, and the thin film is discharged;

[0069] (3) Heat treatment at 160°C for 5h, and mix evenly;

[0070] (4) Re-refining and adding double-two-five at a temperature lower than 50 °C;

[0071] (5) The silicone rubber composite material was prepared by vulcanizing a flat vulcanizer at...

Embodiment 3

[0074] (1) In parts by weight, take 110-290 parts of methyl vinyl silicone rubber, 10 parts of epoxidized methyl vinyl silicone rubber (epoxy content 15%, vinyl content 0.2%), 5 parts of acrylic acid, 7 parts of sodium hydroxide, 40 parts of fumed silica, 2 parts of octamethylcyclotetrasiloxane, 0.3 parts of antibacterial agent triclosan; 0.6 parts of double 25;

[0075] (2) The roll temperature of the double-roll mill is room temperature. After the methyl vinyl silicone rubber 110-2 is pressed into flakes by the mill at room temperature, the octamethylcyclotetrasiloxane and the gas-phase silica , Epoxidized methyl vinyl silicone rubber, acrylic acid, sodium hydroxide, and triclosan are added in batches, the mixing time is 30 minutes, and the thin film is discharged;

[0076] (3) Heat treatment at 160°C for 5h, and mix evenly;

[0077] (4) Re-refining and adding double-two-five at a temperature lower than 50 °C;

[0078] (5) The silicone rubber composite material was prepare...

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Abstract

The invention discloses a hygroscopic antibacterial silicone rubber composite material and a preparation method and application thereof. The silicone rubber composite material includes 100 parts of silicone rubber, 2-8 parts of sodium polyacrylate, 30-50 parts of silica, 1-5 parts of silica modifier, 0.1-1 part of antibacterial agent, and peroxide compound. 0.1-2 parts of joint agent, wherein the silicone rubber includes 80-99 parts of methyl vinyl silicone rubber and 1-20 parts of silicone rubber compatibilizer. The silicone rubber compatibilizer includes epoxidized methyl vinyl silicone rubber and / or carboxyl-modified methyl vinyl silicone rubber. In the present invention, the sodium polyacrylate can be uniformly dispersed in the silicone rubber matrix, and the obtained silicone rubber composite material has good hygroscopic performance. When applied to a silicone mask, water vapor is not easily generated in the mask, which effectively improves wearing comfort and has a good bacteriostatic effect. , It is not easy to breed bacteria and provides the hygienic performance of the mask.

Description

technical field [0001] The invention relates to the field of silicone rubber composite materials, in particular to a hygroscopic antibacterial silicone rubber composite material and a preparation method and application thereof. Background technique [0002] At present, with the aggravation of environmental pollution and the emphasis on anti-virus protection, the demand for masks continues to rise, and a large number of people search the Internet for ways to reuse disposable masks; however, due to the short service life of disposable masks and the large amount of use, a large number of Masks are discarded, causing waste of petrochemical resources, and mask materials are not easy to degrade, which also aggravates environmental pollution. [0003] However, the current replaceable protective masks have the following problems: [0004] (1) Professional protective masks are large in size and heavy in quality, and long-term use is likely to cause facial trauma to the wearer; [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/07C08L83/06C08L33/02C08K13/04C08K7/26C08K3/08C08K5/136A41D13/11A41D31/12A41D31/30B29B7/74B29C35/02C08F120/06C08F283/12C08F220/06
CPCC08L83/04A41D13/1192A41D31/12A41D31/30B29B7/7495B29C35/02C08F120/06C08F283/124C08L2205/08C08L2205/03C08K2201/011C08K2003/0806A41D2500/50C08L83/06C08L33/02C08K13/04C08K7/26C08K5/136C08K3/08C08F220/06
Inventor 张立群卢咏来邹华宫敏陈宏李高平黄向前
Owner BEIJING UNIV OF CHEM TECH