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Material and preparation method and application thereof

A technology for structural layer and resin degradation, applied in chemical instruments and methods, synthetic resin layered products, layered products, etc., can solve the problems of adverse effects of degradation performance, slow and fast, partial analysis and other problems

Active Publication Date: 2020-11-17
PUJING CHEM IND SHA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will not only increase the processing cost of the material, but the use of the above-mentioned additives will also affect the regulation of the degradation performance of the final material due to factors such as uneven dispersion in the matrix, poor compatibility with the matrix, and partial precipitation. Unfavorable effects, and may even appear slow and fast, uneven degradation and other unexpected unstable degradation

Method used

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  • Material and preparation method and application thereof
  • Material and preparation method and application thereof
  • Material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] Using the glycolic acid homopolymer with a relative molecular mass of 243,000, using the calendering method, controlling the cooling temperature to 130 ° C and the cooling rate to 1 ° C / min, a structural layer A with a crystallinity of about 70% can be obtained. The relative molecular mass of 24.3 Wan's glycolic acid homopolymer adopts the extrusion molding method, and the cooling temperature is controlled to be 100 ° C and the cooling rate is 3 ° C / min, and the structural layer B with a crystallinity of about 62% can be obtained. The homopolymer adopts the calendering molding method, the cooling temperature is controlled to be 90 °C, and the cooling rate is 10 °C / min, and a structural layer C with a crystallinity of about 56% can be obtained. The molding method is used, and the cooling temperature is controlled to be 80 °C and the cooling rate is 25 °C / min, and a structural layer D with a crystallinity of about 41% can be obtained;

[0093] The structural layer A and t...

Embodiment 2

[0100] Using the glycolic acid homopolymer with a relative molecular mass of 124,000, the calendering method is used, the cooling temperature is controlled to 150 ° C, and the cooling rate is 0.5 ° C / min, and a structural layer A with a crystallinity of about 70% can be obtained. The relative molecular mass of 18.5 Wan's glycolic acid homopolymer adopts the extrusion molding method, the cooling temperature is controlled to 120°C, and the cooling rate is 2°C / min, and the structural layer B with a crystallinity of about 62% can be obtained. The homopolymer adopts the calendering method, the cooling temperature is controlled to be 100 °C, and the cooling rate is 10 °C / min, and a structural layer C with a crystallinity of about 56% can be obtained. A molding method is developed, the cooling temperature is controlled to be 75°C, and the cooling rate is 15°C / min, and a structural layer D with a crystallinity of about 41% can be obtained;

[0101] The structural layer A and the struc...

Embodiment 3

[0105] Using a glycolic acid homopolymer with a relative molecular mass of 243,000, referring to the process for obtaining the structural layer A in Example 1, a single-layer material with a crystallinity of about 70% was obtained, and its thickness was the same as that obtained in Example 1 or 2. figure 2 The materials shown are the same.

[0106] According to the GB / T 1042 method, the obtained samples of Examples 1 and 2 were obtained respectively. figure 2 The materials shown and the monolayer materials obtained above were tested for material elongation at break.

[0107] According to the method of GB / T 1043, respectively, for example 1 and 2 obtained as figure 2 The materials shown and the monolayer materials obtained above were tested for material impact strength.

[0108] The results are shown in Tables 2 and 3.

[0109] Table 2

[0110]

[0111] table 3

[0112]

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Abstract

The invention discloses a material which comprises at least two structural layers, and the crystallinity of the adjacent structural layers is different. The structural layers are formed by degradableresin.

Description

technical field [0001] The present invention relates to polymer materials, in particular to a degradable polymer material based on the regulation of crystalline region distribution. Background technique [0002] Degradable polymer material refers to a polymer material that can be degraded in the sense of thermodynamics and kinetics under certain time and conditions. It is an environmentally friendly polymer material and can be used in all aspects of production and life, such as, It can be produced by blow molding to produce film products, such as shopping bags, packaging bags, garbage bags, gloves and agricultural films, etc.; can be produced by injection molding to produce container products, such as bottles, etc.; can also be produced by extrusion molding to produce sheets and Pipes, etc., such as plates, bowls, basins, lunch boxes, folders, ropes, straws, hard pipes, etc.; also can be prepared by injection molding to prepare a variety of injection molding products, such a...

Claims

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Application Information

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IPC IPC(8): B32B27/00B32B27/08B32B33/00
CPCB32B27/00B32B27/08B32B33/00B32B2307/704
Inventor 孙朝阳计扬
Owner PUJING CHEM IND SHA
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