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Biodegradable plastic and express packaging bag prepared from same

A biodegradable and plastic technology, applied in the field of express packaging bags, can solve the problems of difficult to meet the general needs of express packaging, environmental pollution, poor tensile strength, etc., to improve crystallization performance, increase tensile strength and tensile strength, improve The effect of tensile strength

Active Publication Date: 2021-12-14
福建长泰万泰矿物制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Express bags are disposable packaging bags, which are easy to use and cause environmental pollution. Therefore, people use biodegradable materials polylactic acid or polyadipate / butylene terephthalate as preparation The plastic of the express bag, but the tensile strength of polylactic acid or polyadipate / butylene terephthalate is poor, it is difficult to meet the general needs of the express packaging industry

Method used

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  • Biodegradable plastic and express packaging bag prepared from same
  • Biodegradable plastic and express packaging bag prepared from same
  • Biodegradable plastic and express packaging bag prepared from same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A biodegradable plastic consisting of 8kg polybutylene adipate / terephthalate, 1kg polylactic acid and 2kg crystallization initiator.

[0044] Wherein, crystallization initiator is made up of 35kg silica intermediate product, 64.8kg water and 0.2kg dispersant, and dispersant is sodium hexametaphosphate, and the preparation method of crystallization initiator comprises the following steps:

[0045] In step (1), the raw silica ore is successively crushed by a jaw crusher and a hammer crusher, and then continue to twist the grinding and classifying machine for one grinding to obtain the silica intermediate product, and the particle size of the silica intermediate product is 250 mesh;

[0046] Step (2), add 64.8kg water and 0.2kg sodium hexametaphosphate together in the batching tank, stir for 5min under 60r / min at a rotating speed, make water and sodium hexametaphosphate mix evenly, then under 20r / min Add the 35kg silica intermediate product prepared by step (1) while stirr...

Embodiment 2

[0052] The difference from Example 1 is that the dispersant is a polycarboxylate dispersant. In step (2), add 59.5kg water and 0.5kg polycarboxylate dispersant together in the batching tank, and stir for 10min at a rotating speed of 50r / min to make water and polycarboxylate dispersant mix uniformly, then Add the 40kg silica intermediate product prepared in step (1) while stirring at a rotating speed of 30r / min, to ensure that the silica intermediate product does not produce precipitation during the addition process to obtain a slurry.

Embodiment 3

[0054] The difference from Example 2 is that in step (2), after secondary grinding, the particle size of the silica intermediate in the water slurry is 5 μm.

[0055] The process conditions of the step (3) remain unchanged, and the water content of the crystallization initiator is 0.5%, the monomer diameter of the crystallization initiator is 1.3 μm, and the thickness is 0.15 μm.

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Abstract

The invention relates to the field of high polymer materials, in particular to biodegradable plastic and an express packaging bag made of the biodegradable plastic. The biodegradable plastic comprises the following components: poly(butylene adipate-co-terephthalate), polylactic acid and a crystallization initiator. A preparation method of the crystallization initiator comprises the following steps: (1) carrying out crushing and primary grinding on original tripoli ore to obtain an intermediate tripoli product; (2) uniformly mixing water and a dispersing agent, then adding the intermediate tripoli product while stirring, and then carrying out secondary grinding to obtain water slurry; and (3) drying the water slurry to obtain the crystallization initiator, wherein the moisture content of the crystallization initiator is lower than 0.5%, the monomer diameter of the crystallization initiator is 0.8-1.5 [mu]m, and the thickness of the crystallization initiator is 0.08-0.15 [mu]m. The biodegradable plastic has the advantage that the tensile strength of the biodegradable plastic is improved.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a biodegradable plastic and an express packaging bag made thereof. Background technique [0002] Express bags refer to the bags used in the express industry to transport documents, documents, materials, and goods. [0003] Express bags are disposable packaging bags, which are easy to use and cause environmental pollution. Therefore, people use biodegradable materials polylactic acid or polyadipate / butylene terephthalate as preparation The plastic of the express bag, but the tensile strength of polylactic acid or polyadipate / butylene terephthalate is poor, it is difficult to meet the general needs of the express packaging industry. Contents of the invention [0004] In order to improve the tensile strength of the biodegradable plastic, the present application provides a biodegradable plastic and the express packaging bag made thereof. [0005] A biodegradable plastic includes ...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L67/04C08K9/00C08K7/00C08K3/34B65D65/46
CPCC08L67/02B65D65/466C08L2201/14C08L2201/06C08L2205/24C08K2201/005C08L67/04C08K9/00C08K7/00C08K3/346Y02W90/10
Inventor 李知白付忠国李为农周晓帆胡世杰吴建排
Owner 福建长泰万泰矿物制品有限公司