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Material for non-transparent degradable plastic bag and preparation method of material

A plastic bag, non-transparent technology, applied in the material and preparation field of non-transparent degradable plastic bags, can solve the problems of reducing the load-bearing capacity of plastic bags, low shading effect and the like

Inactive Publication Date: 2021-05-18
GUANGDONG GERUI NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing degradable plastic bags often add polyacrylamide matting powder for shading when made into non-transparent plastic bags, but the shading effect is low and the load-bearing capacity of the plastic bags is reduced

Method used

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  • Material for non-transparent degradable plastic bag and preparation method of material
  • Material for non-transparent degradable plastic bag and preparation method of material
  • Material for non-transparent degradable plastic bag and preparation method of material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A material for a non-transparent degradable plastic bag, comprising the following raw materials in parts by weight:

[0037]

[0038] The preparation method of each part of the modified white carbon black comprises the steps:

[0039] (S1), in parts by weight, take 18 parts of white carbon black, 15 parts of phenylsiloxane monomer, 15 parts of silane coupling agent and 1.5 parts of dispersant and mix uniformly to obtain a dispersion;

[0040] (S2), adding 25 parts of lactic acid-water solution with a concentration of 3wt% to the dispersion liquid at 60°C under stirring conditions, and continuously stirring for 1.5 hours to obtain a polycondensation liquid;

[0041] (S3), add 30 parts of acrylonitrile to the polycondensation liquid under stirring conditions, add 0.5 parts of initiator dropwise after raising the temperature to 80°C, the dropping time is 2h, continue to stir and keep warm for 4h, then filter, wash and dry Dry to obtain modified white carbon black.

[...

Embodiment 2

[0054] A material for a non-transparent degradable plastic bag, comprising the following raw materials in parts by weight:

[0055]

[0056] The preparation method of each part of the modified white carbon black comprises the steps:

[0057] (S1), in parts by weight, take 15 parts of white carbon black, 10 parts of phenylsiloxane monomer, 10 parts of silane coupling agent and 1 part of dispersant and mix uniformly to obtain a dispersion;

[0058] (S2), adding 20 parts of lactic acid-water solution with a concentration of 2wt% to the dispersion liquid under stirring conditions at 60°C, and continuously stirring for 1 hour to obtain a polycondensation liquid;

[0059] (S3), add 25 parts of acrylonitrile to the polycondensation liquid under stirring conditions, add 0.3 parts of initiator dropwise after raising the temperature to 70°C, the dropping time is 1h, continue to stir and keep warm for 3h, then filter, wash and dry Dry to obtain modified white carbon black.

[0060] ...

Embodiment 3

[0072] A material for a non-transparent degradable plastic bag, comprising the following raw materials in parts by weight:

[0073]

[0074]

[0075] The preparation method of each part of the modified white carbon black comprises the steps:

[0076] (S1), in parts by weight, take 20 parts of white carbon black, 20 parts of phenylsiloxane monomer, 20 parts of silane coupling agent and 2 parts of dispersant and mix uniformly to obtain a dispersion;

[0077] (S2), adding 30 parts of lactic acid-water solution with a concentration of 5wt% to the dispersion liquid under stirring conditions at 60°C, and continuously stirring for 2 hours to obtain a polycondensation liquid;

[0078] (S3), add 35 parts of acrylonitrile to the polycondensation liquid under stirring conditions, add 0.8 parts of initiator dropwise after heating up to 90°C, dropwise adding time is 3h, continue to stir and keep warm for 5h, then filter, wash and dry Dry to obtain modified white carbon black.

[00...

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Abstract

The invention relates to the technical field of degradable plastic bags, in particular to a material for a non-transparent degradable plastic bag. The material comprises the following raw materials in parts by weight: 100 parts of poly(butylene adipate / terephthalate), 30-50 parts of esterified starch, 20-30 parts of modified white carbon black, 10-20 parts of nano calcium carbonate, 3-5 parts of a flexibilizer, 1-3 parts of an aluminate coupling agent, 0.5-1 part of a lubricant, 1-2 parts of a chain extender and 0.5-2 parts of a plasticizer. According to the material, the poly(butylene adipate / terephthalate) is used as a main material, and the added esterified starch and nano calcium carbonate act together and are uniformly dispersed under the action of the aluminate coupling agent, so that the shading effect of the material is improved; and under the combined action of the modified white carbon black and nano calcium carbonate in combination with the flexibilizer and the poly(adipic acid / butylene terephthalate), esterified starch and the chain extender, the tensile property and tear strength of the material are improved, so that the bearing capacity of the plastic bag is improved.

Description

technical field [0001] The invention relates to the technical field of degradable plastic bags, in particular to a material used for non-transparent degradable plastic bags and a preparation method thereof. Background technique [0002] With the development of science and technology, various materials that can replace traditional PE plastics have emerged, including PLA, PHAs, PBA, PBS and other polymer materials. Can replace traditional PE plastic bags. Environmentally friendly plastic bags are widely used at present: supermarket shopping bags, continuous roll fresh-keeping bags, plastic film, etc. have large-scale application examples in China. [0003] Existing degradable plastic bags often add polyacrylamide matting powder for shading when made into non-transparent plastic bags, but the shading effect is low and the load-bearing capacity of the plastic bags is reduced. Contents of the invention [0004] In order to overcome the shortcomings and deficiencies in the pri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L3/06C08K13/06C08K7/26C08K9/04C08K3/26C08K5/11C08K5/053C08J5/18
CPCC08J5/18C08J2367/02C08J2403/06C08K13/06C08K7/26C08K2201/011C08K9/04C08K2003/265C08K5/11C08K5/053
Inventor 郑子华郑宇航陈扬友朱文博
Owner GUANGDONG GERUI NEW MATERIALS CO LTD