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A kind of antibacterial high-strength biodegradable plastic bag and preparation method thereof

A biodegradable, plastic bag technology, applied in the field of plastic bag preparation, can solve the problems of easy harm to the human body, residual pesticides in plant fibers, poor tensile strength, etc., and achieves excellent degradable performance, excellent antibacterial ability, and strong load-bearing capacity. Effect

Active Publication Date: 2022-03-29
余姚市康乐彩印包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the fact that the plastic bags made of starch and other raw materials in the existing degradable plastics often have poor tensile strength, and at the same time, they are prone to mold and mildew, and more or less pesticides remain in plant fibers, which are easy to cause harm to the human body. and other problems, a kind of antibacterial high-strength biodegradable plastic bag and its preparation method are proposed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0037] A preparation method of an antibacterial high-strength biodegradable plastic bag, comprising the following preparation steps:

[0038] S1: Mix antibacterial silica particles, silane coupling agent, and chain extender to obtain modified antibacterial silica particles;

[0039] S2: Mix polylactic acid, PBAT, modified antibacterial silica particles, and a stabilizer to obtain a mixture;

[0040] S3: twin-screw extrusion of the mixture at 180-190°C to prepare composite particles;

[0041] S4: Blow molding and packaging the composite particles to prepare antibacterial and high-strength biodegradable plastic bags.

Embodiment 1

[0042] Embodiment 1: An antibacterial high-strength biodegradable plastic bag, comprising the following components in parts by mass: 180 parts of polylactic acid, 360 parts of PBAT, 140 parts of antibacterial silicon dioxide particles, 30 parts of epoxy polymeric chain extender, Stabilizer sodium alginate 22 parts, KH550 silane coupling agent 4 parts;

[0043] The antibacterial silicon dioxide particles comprise the following preparation steps:

[0044] (1) Mix 7 parts of water, 12 parts of n-hexane and 35 parts of ethanol to obtain a mixed solution, then add 4 parts of octadecyltrimethylammonium bromide, 6 parts of ethyl orthosilicate and 2 parts of 22wt% ammonia water, mixed evenly, and kept at 55°C for 11h, then centrifuged, and the precipitate was calcined at 600°C for 3h to prepare mesoporous silica with a cavity;

[0045] (2) Put 12 parts of hydroxyethylacrylamide, 15 parts of hydroxypropyl acrylate and 4 parts of N-(1,1-dimethyl-3-oxobutyl)acrylamide in 130 parts of N,...

Embodiment 2

[0053] Embodiment 2: An antibacterial high-strength biodegradable plastic bag, in parts by mass, includes the following components: 110 parts of polylactic acid, 320 parts of PBAT, 130 parts of antibacterial silicon dioxide particles, 10 parts of oxazoline chain extender, stable Agent zinc stearate 20 parts, KH560 silane coupling agent 2 parts;

[0054] The antibacterial silicon dioxide particles comprise the following preparation steps:

[0055] (1) Mix 50 parts of water, 10 parts of n-hexane and 30 parts of ethanol to obtain a mixed solution, then add 3 parts of octadecyltrimethylammonium bromide, 3 parts of tetraethyl orthosilicate and 1 part of 20wt% ammonia water, mix evenly, keep warm at 40°C for 15h, then centrifuge, and place the precipitate at 500°C for 5h to prepare mesoporous silica with a cavity;

[0056] (2) Put 10 parts of hydroxyethylacrylamide, 12 parts of hydroxypropyl acrylate and 3 parts of N-(1,1-dimethyl-3-oxobutyl)acrylamide in 120 parts of N,N- In dime...

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PUM

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Abstract

The invention discloses an antibacterial high-strength biodegradable plastic bag and a preparation method thereof, and relates to the technical field of plastic bag preparation, and comprises the following components in parts by mass: 110-190 parts of polylactic acid, 320-420 parts of PBAT, antibacterial dioxide 130-150 parts of silicon particles, 10-50 parts of chain extender, 20-25 parts of stabilizer, 2-6 parts of silane coupling agent; the invention uses polylactic acid and PBAT as the matrix, which has excellent degradable performance, environmental protection, No pollution and no burden to the environment; and the use of antibacterial silica particles as an additive not only increases the overall mechanical properties of the plastic bag, but also has a stronger load-bearing capacity, and also increases the excellent antibacterial ability of the plastic bag, preventing the mold of the plastic bag Changes and other hazards to users.

Description

technical field [0001] The invention relates to the technical field of plastic bag preparation, in particular to an antibacterial high-strength biodegradable plastic bag and a preparation method thereof. Background technique [0002] In today's society, plastic bags have brought great convenience to people's lives and are one of the most frequently used products in daily life. It needs to be replaced after one use, and these plastic bags cannot be degraded, so it is easy to cause garbage accumulation. After being buried in the ground, it will undoubtedly bring great pollution to the living environment. Therefore, degradable plastic bags came into being. Degradable plastic bags are more environmentally friendly because they can be decomposed in the natural environment, so they are advocated by more environmentalists. However, most of the existing degradable plastic bags use starch and other biodegradable Degradation adopts production. [0003] For example, a "type degradabl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L67/04C08L33/14C08K7/26C08K9/10C08K9/06C08K9/04
CPCC08L67/02C08L2205/02C08L2205/03C08L2201/06C08L67/04C08L39/04C08K7/26C08K9/10C08K9/06C08K9/04
Inventor 李哲桑铿
Owner 余姚市康乐彩印包装有限公司