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Antibacterial plastic and preparation method thereof

A technology of antibacterial plastics and herbal plants, which is applied in the field of plastic products, and can solve the problems that plastic wrap affects the freshness of food, etc.

Inactive Publication Date: 2018-03-09
ANHUI YUEERWEI PLASTIC MACHINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in summer, germs are easy to breed. The storage of many foods in family life depends on the intervention of plastic wrap and refrigerators, but the quality of plastic wrap will also directly affect the freshness of food.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0015] The invention provides a preparation method of antibacterial plastics, comprising: polyvinyl acetate, polyurethane resin, antibacterial plastic filler, turpentine, vinyltrimethoxysilane, tricresyl phosphate and the silane coupling agent of KH570 Mixing is carried out to obtain colloids; adding the colloids to an extruder and extruding to obtain the antibacterial plastic; wherein, the antibacterial plastic filler is made of herbs, chitosan, chitin fiber , diatomaceous earth, calcium stearate, sodium alginate, hydrotalcite, iron stearate, and silicon oxide; the extruder includes a feeding section, a middle section, and an extrusion head connected in sequence, and the extruder The working temperature of the machine is: feeding section 105-110°C, middle section 115-120°C, extruder head 180-195°C.

[0016] In the above technical solution, the mixing conditions can be selected in a wide range, but in order to improve the mixing effect, preferably, the mixing at least meets th...

preparation example 1

[0032] The mixture M1 was prepared by stirring and mixing Ophiopogon japonicus, chitosan, chitin fiber and diatomaceous earth at 3000rpm for 1.5h, and heat-treated at 100°C for 6h;

[0033] Calcium stearate, sodium alginate, hydrotalcite, iron stearate and silicon oxide were added to the mixture M1, stirred and mixed at 3000rpm for 1.5h, heat-treated at 130°C for 2h, dried, ground and sieved to obtain the The antibacterial plastic filler mentioned above is denoted as W1;

[0034] Among them, the weight ratio of Ophiopogon japonicus, chitosan, chitin fiber, diatomaceous earth, calcium stearate, sodium alginate, hydrotalcite, iron stearate and silicon oxide is 100:3:5:5:10: 3:1:1:2.

preparation example 2

[0036] The mixture M1 was prepared by stirring and mixing Folium Folium Folium, chitosan, chitin fiber and diatomaceous earth at 4000rpm for 1.2h, and heat-treating at 105°C for 5h;

[0037] Calcium stearate, sodium alginate, hydrotalcite, iron stearate and silicon oxide were added to the mixture M1, stirred and mixed at 4000rpm for 1.2h, heat-treated at 145°C for 1.5h, dried, ground and sieved to obtain The antibacterial plastic filler is denoted as W2;

[0038] Wherein, the weight ratio of the Folium Folium Folium, chitosan, chitin fiber, diatomaceous earth, calcium stearate, sodium alginate, hydrotalcite, iron stearate and silicon oxide is 100:4:8:10 :13:4:2:2:3.

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PUM

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Abstract

The invention discloses an antibacterial plastic and a preparation method thereof. The preparation method includes the steps: mixing polyvinyl acetate, polyurethane resin, antibacterial plastic fillers, turpentine oil, vinyl trimethoxy silane, tricresyl phosphate and silane coupling agents with the mark of KH570 to prepare colloidal particles; adding the colloidal particles into an extruder for extrusion molding to prepare the antibacterial plastic. The antibacterial plastic fillers are prepared from herbaceous plants, chitosan, chitin fibers, diatomite, calcium stearate, sodium alga acid, hydrotalcite, ferric stearate and silicon oxide, the extruder comprises a feeding section, a middle section and an extrusion head, the working temperature of the feeding section of the extruder ranges from 105 DEG C to 110 DEG C, the working temperature of the middle section ranges from 115 DEG C to 120 DEG C, and the working temperature of the extrusion head ranges from 180 DEG C to 195 DEG C. The antibacterial plastic is high in mechanical strength, bacteria breeding can be effectively inhibited, and preservation effects on food and the like are improved.

Description

technical field [0001] The invention relates to the field of plastic products, in particular to an antibacterial plastic and a preparation method thereof. Background technique [0002] There are many kinds of plastic products, among which cling film is a kind of plastic packaging product. Cling film is a kind of plastic product, usually made of ethylene as the masterbatch through polymerization reaction. Cling film can be divided into three categories: the first is polyethylene, Referred to as PE; the second is polyvinyl chloride, referred to as PVC; the third is polyvinylidene chloride, referred to as PVDC. [0003] Microwave food heating, refrigerator food preservation, fresh and cooked food packaging and other occasions are widely used in family life, supermarkets, hotels and restaurants, and food packaging in industrial production. [0004] Preservative film is widely favored by consumers for its advantages of convenience, economy and beauty. However, with the frequenc...

Claims

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Application Information

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IPC IPC(8): C08L31/04C08L75/04C08L91/00C08L5/08C08L5/04C08K13/04C08K7/26C08K5/098C08K3/36C08K5/00
CPCC08L31/04C08K2201/014C08L2205/025C08L2205/035C08L2205/16C08L75/04C08L91/00C08L5/08C08L5/04C08K13/04C08K7/26C08K5/098C08K3/36C08K5/0058
Inventor 钱万水
Owner ANHUI YUEERWEI PLASTIC MACHINE CO LTD
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