Antibacterial thermoplastic resin composition as well as preparation method and application thereof

A thermoplastic resin and composition technology, applied in the field of antibacterial thermoplastics, can solve the problems of complex process, limited application, poor control of product shape and particle size, etc.

Active Publication Date: 2020-11-17
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 strong water solubility of most guanidinium salt polymers, it is difficult to make powder samples, which limits its application in the fields of plastics, rubber and fibers
The Chinese patent whose publication number is CN101037503A has invented a kind of method for preparing powdered guanidinium salt polymer product, and the guanidinium salt polymer is separated from aqueous solution by ion separation exchange membrane to make powder sample; But this method prepares guanidinium salt polymer The conditions of the powder are relatively harsh and the process is more complicated
[0006] The Chinese patent with the publication number CN1350022A has invented a method for preparing polyamines and guanidinium salt polymers. The molecular structure of guanidinium salt polymers contains active groups such as double bonds and epoxy, which are used for melting an

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0100] (1) mixed butene gas is composed of: trans-2-butene, 40.83% by weight; cis-2-butene, 18.18% by weight; n-butane, 24.29% by weight; n-butene, 9.52% by weight; isobutene, 2.78% by weight %; others, 4.4% by weight. Maleic anhydride 100g and azobisisobutyronitrile 2g are dissolved in 800mL isoamyl acetate to form a solution one, and the mixed butenes (the moles of effective components (terminal olefins) in maleic anhydride and mixed olefins) that are passed into metered The ratio is 1:1), under nitrogen atmosphere, react at 70°C and 0.5MPa for 1 hour;

[0101] (2) Dissolve 25g of divinylbenzene in 200mL of isoamyl acetate to form solution 2. Add solution 2 into the reaction system by a plunger pump and add it dropwise for 2 hours. After the addition, the reaction system continues to keep warm at 70°C for 3 Hour.

[0102] (3) Release the pressure after the reaction, add 350 g (15 wt %) of polyhexamethylene biguanide hydrochloride aqueous solution, and react at 80° C. for 3...

Embodiment 2

[0104] Prepare guanidinium salt antimicrobial microspheres according to the method of Example 1, the difference is that the system after the step (2) reaction is centrifuged under the condition of 5000rad / min for 30 minutes through a centrifuge to obtain a cross-linked mixed butene / maleic anhydride polymer The microspheres were purified by washing with n-hexane and dried in vacuum. Then, the dried cross-linked mixed butene / maleic anhydride polymer microspheres were added to 350 g (15 wt %) of polyhexamethylene biguanide hydrochloride aqueous solution, and reacted at 80° C. for 3 hours. The system after the reaction was centrifuged under the condition of 5000rad / min for 20 minutes through a centrifuge, and the solid was stirred and washed with 4L of water. Centrifuge under the condition of 5000rad / min for 20 minutes, and dry the solid in vacuum to obtain guanidinium salt antibacterial microspheres 2# grafted with guanidinium salt polymer on the surface. The average particle di...

Embodiment 3

[0106] (1) Maleic anhydride 100g and azobisisobutyronitrile 2g are dissolved in 800mL isoamyl acetate to form a solution one, and the mixed butenes (composition is the same as in Example 1, maleic anhydride and mixed olefins) The molar ratio of effective components (terminal olefins) is 1:1), under nitrogen atmosphere, react at 70°C and 0.4MPa for 2 hours;

[0107] (2) 15 g of divinylbenzene was dissolved in 200 mL of isoamyl acetate to form solution 2. Solution 2 was added to the reaction system by a plunger pump and added dropwise for 2 hours. After the addition was completed, the reaction system was kept warm for 3 hours.

[0108] (3) Release the pressure after the reaction, add 500 g (5 wt %) of polyhexamethyleneguanidine hydrochloride aqueous solution, and react at 60° C. for 7 hours. After the reaction, the system was allowed to stand for stratification, and the heavy phase was centrifuged under the condition of 5000rad / min for 20 minutes, and the solid was stirred and w...

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Abstract

The invention relates to an antibacterial thermoplastic resin composition as well as a preparation method and application thereof, belonging to the field of antibacterial thermoplastic plastics. The antibacterial thermoplastic resin composition comprises the following components in parts by weight: 100 parts of thermoplastic resin and 0.03-4.8 parts of a guanidine salt antibacterial microsphere, wherein the guanidine salt antibacterial microsphere has the characteristics of good fluidity and low moisture absorption, and in the preparation process of the antibacterial thermoplastic resin composition, a guanidine salt polymer does not adhere to the wall and is easy to discharge, production and operation are simple, and excessive production condition control is not needed. The prepared antibacterial thermoplastic resin composition has good antibacterial and mildew-proof effects, and is also improved in water resistance.

Description

technical field [0001] The invention relates to the field of antibacterial thermoplastics, and more specifically, relates to an antibacterial thermoplastic resin composition and its preparation method and application. Background technique [0002] Plastic products are one of the most common and most contacted items in people's life and work. Because plastic products are easy to be contaminated and breed a variety of microorganisms during processing and use, pathogenic bacteria and molds have caused certain damage to people's health. hazards. In recent years, with the improvement of people's living standards and the enhancement of hygiene awareness, people pay more and more attention to the pursuit of a healthy living environment, and the demand for antibacterial material products is increasing, among which antibacterial plastic products occupy an important position. Due to the wide variety of thermoplastics, easy processing, and wide application range, they are widely used ...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L87/00C08L23/06C08L77/02C08L69/00C08L55/02C08L67/02C08K5/00C08G81/02
CPCC08L23/12C08L23/06C08L77/02C08L69/00C08L67/02C08G81/024C08L87/005C08K5/0091C08L55/02
Inventor 张师军杨浩初立秋李杰刘建叶张琦邵静波董穆白弈青陈若石
Owner CHINA PETROLEUM & CHEM CORP
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