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Long-acting broad-spectrum antibiotic polypropylene plastic and method for preparing the same

An antibacterial polypropylene and polypropylene technology, applied in the field of long-acting broad-spectrum antibacterial polypropylene plastics and its preparation, can solve the problems of long time consumption, high possibility of decomposition, difficulty in large-scale production, etc., and achieve good finish and easy operation Simple, convenient and low-cost effect

Active Publication Date: 2009-10-07
浙江石油化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in fact surface treatment of inorganic nanoparticles takes a long time and money, and it is difficult to mass-produce
Moreover, due to the low decomposition temperature of the current general organic antibacterial agents, the possibility of decomposition during processing is high, which may cause pollution to the environment.

Method used

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  • Long-acting broad-spectrum antibiotic polypropylene plastic and method for preparing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] a. 0.5g zinc pyrithione (particle diameter 50nm) and 0.5g antioxidant 1010 are premixed;

[0044] b. blend the premix obtained in a with 100g polypropylene on a high-speed mixer (rotating speed is 3000r / min), add 1g dispersant liquid paraffin during the blending process, and mix for 3 minutes at normal temperature;

[0045] c. Extrude and granulate the mixture obtained in b through parallel twin-screws, the processing temperature is 200°C, the screw speed is 400r / min, and then the pellets are baked at 80°C for 12 hours to obtain a compound with high-efficiency broad-spectrum antibacterial properties Polypropylene plastic, see Table 1 for antibacterial properties.

Embodiment 2

[0047] a. Premix 1g zinc pyrithione (50nm particle size) with 0.5g antioxidant 1010;

[0048] b. blend the premix obtained in a with 100g polypropylene on a high-speed mixer (rotating speed is 3000r / min), add 1g dispersant liquid paraffin during the blending process, and mix for 3 minutes at normal temperature;

[0049] c. The mixture obtained in b is extruded and granulated through parallel twin-screws, the processing temperature is 180°C, the screw speed is 400r / min, and the pellets are dried at 80°C for 12 hours to obtain a compound with high-efficiency broad-spectrum antibacterial properties Polypropylene plastic, see Table 1 for antibacterial properties.

Embodiment 3

[0051] a. Premix 1.5g zinc pyrithione (50nm particle size) with 0.5g antioxidant 1010;

[0052] b. blend the premix obtained in a with 100g polypropylene on a high-speed mixer (rotating speed is 3000r / min), add 1g dispersant liquid paraffin during the blending process, and mix for 3 minutes at normal temperature;

[0053] c. Extrude and granulate the mixture obtained in b through parallel twin-screws, the processing temperature is 200°C, the screw speed is 400r / min, and then the pellets are baked at 80°C for 12 hours to obtain a compound with high-efficiency broad-spectrum antibacterial properties Polypropylene plastic, see Table 1 for antibacterial properties.

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Abstract

The invention discloses a long-acting broad-spectrum antibiotic polypropylene plastic, composed by components of following weight parts: polypropylene 100 parts, zinc pyrithione 0.5 to 5 parts, antioxidant 0.5 to 2 parts, dispersant 1 to 2 parts. The invention also discloses prepartion method of the long-acting broad-spectrum antibiotic polypropylene plastic. The benefical effects of the invention is reflected in: excellent high temperature resistant performance, high efficiency broad-spectrum antibiotic, simple and convenient operation, low cost and good economic benefit.

Description

(1) Technical field [0001] The invention relates to a long-acting broad-spectrum antibacterial polypropylene plastic and a preparation method thereof. (2) Background technology [0002] At present, plastic products play a very important role in people's daily life and industrial and agricultural production. However, with the change of people's health concept, it is gradually realized that a large number of various healing bacteria that are harmful to human health will grow on the surface of plastic products. In order to effectively prevent and kill the epiphytic bacteria on the surface of plastics, people usually add bactericides to plastics to make antibacterial plastics. As described in Chinese patents 12907719A and 1687200A, etc., almost all use inorganic nanopowders to carry various metal particles, such as: Ag + 、Cu 2+ , Zn 2+ . However, the use of inorganic antibacterial agents needs to solve the compatibility problem of inorganic nanoparticles and plastics, altho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K5/36B29B9/00B29B9/06B29B9/12B29C47/92B29C48/92
Inventor 钟明强蒋东升王永忠杨晋涛
Owner 浙江石油化工有限公司
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