Biodegradable material and preparation method thereof

A biodegradable and biodegradable plastic technology, applied in the field of polymer materials, can solve the problems of low elongation at break, slow degradation speed, and influence on acceptance of PBAT, and achieve good co-powder effect, stable temperature change, and improved degradation speed effect

Inactive Publication Date: 2018-07-17
DONGGUAN XINHAI ENVIRONMENT PROTECTION MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] PBAT has superior physical properties and degradability, but ordinary PBAT also has defects such as low elongation at break, high cost, and slow degradation speed, which affect its acceptance in the market

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The biodegradable material of the present invention includes the following raw materials in parts by weight: the A material is 20%, the B material is 50%, and the PBAT thermoplastic biodegradable plastic is 30%; the A material includes the following raw materials in parts by weight : PBAT thermoplastic biodegradable plastic 50%, PLA 40%, inorganic filler 10%; the B material includes the following raw materials in parts by weight: PBAT thermoplastic biodegradable plastic 50%, starch masterbatch% 50%, of which, The starch masterbatch includes the following raw materials in parts by weight: starch 70%, coupling agent 3%, paraffin wax 2%, glycerin 22.9%, citric acid 0.1% and epoxy soybean oil 2%.

[0049] The above-mentioned PLA accounts for a proportion of 40%*20%=8% by weight, and has a relatively high degree of flexibility and moderate tensile strength, making the biodegradable material of the present invention suitable for making garbage bags.

[0050] The preparation method...

Embodiment 2

[0058] The biodegradable material of the present invention includes the following raw materials in parts by weight: the A material is 40%, the B material is 30%, and the PBAT thermoplastic biodegradable plastic is 30%; the A material includes the following raw materials in parts by weight : PBAT thermoplastic biodegradable plastic 40%, PLA 50%, inorganic filler 10%; the B material includes the following raw materials in parts by weight: PBAT thermoplastic biodegradable plastic 50%, starch masterbatch% 50%, of which, The starch masterbatch includes the following raw materials in parts by weight: starch 70%, coupling agent 3%, paraffin wax 2%, glycerin 22.9%, citric acid 0.1% and epoxy soybean oil 2%.

[0059] The above-mentioned PLA accounts for a proportion of 40%*50%=20% by weight. Its softness is relatively low, its tensile strength and hardness are relatively improved, and its toughness is relatively large, making the biodegradable material of the present invention suitable for...

Embodiment 3

[0067] The biodegradable material of the present invention includes the following raw materials in parts by weight: the A material is 50%, the B material is 25%, and the PBAT thermoplastic biodegradable plastic is 25%; the A material includes the following raw materials in parts by weight : PBAT thermoplastic biodegradable plastic 40%, PLA 50%, inorganic filler 10%; the B material includes the following raw materials in parts by weight: PBAT thermoplastic biodegradable plastic 50%, starch masterbatch% 50%, of which, The starch masterbatch includes the following raw materials in parts by weight: starch 70%, coupling agent 3%, paraffin wax 2%, glycerin 22.9%, citric acid 0.1% and epoxy soybean oil 2%.

[0068] The proportion of the PLA in the total weight is 50%*50%=25%, and its hardness is relatively large, and the tensile strength and toughness are relatively large, making the biodegradable material of the present invention suitable for making handbags.

[0069] The preparation met...

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Abstract

The invention discloses a biodegradable material and a preparation method thereof. The biodegradable material comprises, by weight, 20-50% of material A, 40-60% of material B and 20-40% of PBAT thermoplastic biodegradable plastic. The material A comprises, by weight, 40-60% of PBAT thermoplastic biodegradable plastic, 30-50% of PLA and 8-15% of inorganic filler. The material B comprises, by weight, 40-60% of PBAT thermoplastic biodegradable plastic and 40-60% of starch masterbatch, wherein the starch masterbatch comprises, by weight, 60-70% of starch, 1-3% of coupling agent, 1-3% of paraffin,25-30% of glycerin, 0.1-0.3% of citric acid and 2-5% of epoxidized soybean oil.

Description

Technical field: [0001] The invention relates to the technical field of polymer materials, in particular to a biodegradable material and a preparation method thereof. Background technique: [0002] In the field of packaging materials, PBAT (polyadipate / butylene terephthalate) is the most commercially valuable biodegradable plastic. Currently, nearly 60% of the packaging biodegradable plastics in use are PBAT is a variety of modified materials for the base material. The huge market demand has caused countries around the world to scramble for R&D and investment, speeding up its commercialization process. There is no doubt that the biodegradable industry is a strategic industry that has high growth and is related to environmental protection and emission reduction. [0003] PBAT has superior physical properties and degradability, but ordinary PBAT also has defects such as low elongation at break, high cost, and slow degradation rate, which affect its acceptance in the market. [0004]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L67/04C08L3/02C08J5/18C08J3/22
Inventor 杨海全
Owner DONGGUAN XINHAI ENVIRONMENT PROTECTION MATERIAL
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