Antibacterial polypropylene bidirectional stretching film and preparation method thereof

A biaxially stretched film and antibacterial polypropylene technology, applied in the field of plastics, can solve the problems of low antibacterial timeliness and insufficient water resistance of BOPP

Active Publication Date: 2014-12-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problems of insufficient water resistance and low antibacterial timeliness of BOPP existing in the prior art, the present invention provides an antibacterial polypropylene biaxially stretched film and a preparation method thereof

Method used

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  • Antibacterial polypropylene bidirectional stretching film and preparation method thereof
  • Antibacterial polypropylene bidirectional stretching film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] (1) Weigh 100.0 g (0.465 mol) of polyhexamethylene guanidine propionate (Shanghai Gaoju F3000), add it to 300 mL deionized water solution, stir to dissolve it, and call it solution A; (2) also call it Add 70.0g (0.246mol) of sodium silicate (chemically pure, commercially available) into 300mL of deionized water, stir to dissolve it, and call it solution B; (3) at room temperature (about 25°C), mix solution A and Solution B was mixed and fully stirred for 30 minutes to form solution C; (4) Weigh zinc sulfate ZnSO 4 (Chemically pure, commercially available) 180.0g (0.626mol), slowly poured into solution C, and vigorously stirred for 5min, the precipitate was filtered, dried, and pulverized to obtain polyhexamethylene guanidine propionate / polysilicic acid Zinc composite antibacterial agent (composite antibacterial agent one).

Embodiment 2

[0054] (1) Weigh 100.0 g (0.465 mol) of polyhexamethylene guanidine propionate (Shanghai Gaoju F3000), add it to 300 mL deionized water solution, stir to dissolve it, and call it solution A; (2) also call it Add 100.0 g (0.352 mol) of sodium silicate (chemically pure, commercially available) into 500 mL of deionized water, stir to dissolve it, and call it solution B; (3) mix solution A and solution B, and fully Stir for 1h to form solution C; (4) weigh zinc sulfate ZnSO 4 (Chemically pure, commercially available) 120.0g (0.417mol), slowly poured into solution C, and vigorously stirred for 10min, the precipitate was filtered, dried, and pulverized to obtain polyhexamethylene guanidine propionate / polysilicic acid Zinc composite antibacterial agent (composite antibacterial agent two).

Embodiment 3

[0056] (1) Weigh 100.0g (0.635mol) of polyhexamethyleneguanidine hydrochloride (Shanghai Gaoju F1000), add it to 300mL deionized aqueous solution, stir to dissolve it, and call it solution A; (2) call it solution A; Add 150.0g (0.528mol) of sodium silicate (chemically pure, commercially available) into 600mL of deionized water, stir to dissolve, and call it solution B; (3) at room temperature (about 25°C), mix solution A and Solution B was mixed and fully stirred for 1.5h to form solution C; (4) Weigh calcium nitrate Ca(NO 3 ) 2 (Chemically pure, commercially available) 120.0g (0.508mol), slowly poured into solution C, and vigorously stirred for 10min, the precipitate was filtered, dried, and pulverized to obtain polyhexamethyleneguanidine hydrochloride / polysilicic acid Calcium compound antibacterial agent (composite antibacterial agent three).

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Abstract

The invention discloses an antibacterial polypropylene bidirectional stretching film and a preparation method thereof. The polypropylene film comprises 100 parts of polypropylene resin and 0.1 to 3 parts of composite antibacterial agent which are blended, wherein the composite antibacterial agent is polyguanidinium / polysilicate composite antibacterial agent and is prepared by the following steps of: mixing water-soluble polyguanidine inorganic acid salt or organic acid salt aqueous solution and water-soluble silicate aqueous solution; adding water-soluble metal salt aqueous solution and stirring to obtain precipitate; and drying and crushing. The antibacterial polypropylene bidirectional stretching film has the advantages that: antibacterial efficiency is high; antibacterial ratio can reach 99.9 percent; the antibacterial component is difficult to separate out from the film; waterproof stability and transparency are high; and the antibacterial polypropylene bidirectional stretching film is difficult to yellow. Production steps are simple and popularization and application are facilitated.

Description

technical field [0001] The invention relates to the field of plastics, in particular to an antibacterial polypropylene biaxially stretched film and a preparation method thereof. Background technique [0002] With the development of the packaging industry, the consumption of polypropylene biaxially oriented film (abbreviation: BOPP) is increasing day by day, and the annual consumption of domestic BOPP has exceeded 2 million tons. In today's society, people's awareness of health and hygiene is constantly improving, and there are hygienic requirements for BOPP films used in packaging of food, recipes, photo albums, song books and hospital supplies, that is, the development of BOPP films with antibacterial functions is required. Antibacterial BOPP film can effectively increase the shelf life of packaged food and reduce the chance of cross-spreading of harmful bacteria in public places such as hospitals and restaurants. [0003] The preparation of antibacterial BOPP film is main...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L79/00C08K13/02C08K3/34B29C55/12
Inventor 李杰高达利王小兰杨庆泉邹浩刘涛张丽英尹华张师军
Owner CHINA PETROLEUM & CHEM CORP
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