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Application of polyester amide as high-temperature-resistant heat-shrinkable film

A technology of polyester amide and heat shrinkable film is applied in the application field of polyester amide as heat shrinkable film, which can solve the problems of poor heat resistance of heat shrinkable film and achieve the effect of realizing shrinkage performance.

Active Publication Date: 2021-06-08
ANHUI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the heat shrinkable film in the prior art has poor heat resistance

Method used

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  • Application of polyester amide as high-temperature-resistant heat-shrinkable film
  • Application of polyester amide as high-temperature-resistant heat-shrinkable film
  • Application of polyester amide as high-temperature-resistant heat-shrinkable film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The preparation of heat-shrinkable film 1 specifically comprises the following steps:

[0046] Take 22.4g of tall oil-based dimer acid, 3.4g of 1,3-diamino-2-propanol, and 40mg of sodium phosphite into a three-necked flask, mix them uniformly with a mechanical stirrer under a nitrogen atmosphere at 80°C and heat them for 1 hour, then raise the temperature to 140 °C for 12 hours, then raised the temperature to 180 °C for 6 hours, then raised the temperature to 230 °C for 2 hours, and finally cooled the reaction system to 140 °C. After the reaction, the product was named polyester amide 1.

[0047] The polyester amide 1 was subjected to sheeting and uniaxial stretching, the stretching speed was 10 mm / min, the stretching strain was 150%, and the stretched product was named heat-shrinkable film 1.

Embodiment 2

[0049] The preparation of heat-shrinkable film 2 specifically comprises the following steps:

[0050]Take 20.8g of tall oil-based dimer acid, 3.4g of 1,3 diamino-2-propanol, and 40mg of sodium phosphite into a three-necked flask, mix them uniformly with a mechanical stirrer under a nitrogen atmosphere at 80°C and heat them for 1 hour, then raise the temperature to 140 °C for 12 hours, then raised the temperature to 180 °C for 6 hours, then raised the temperature to 230 °C for 2 hours, and finally cooled the reaction system to 140 °C. After the reaction, the product was named polyester amide 2.

[0051] The polyester amide 2 was subjected to sheeting and uniaxial stretching, the stretching speed was 10 mm / min, the stretching strain was 150%, and the stretched product was named heat-shrinkable film 2.

Embodiment 3

[0053] The preparation of heat-shrinkable film 3 specifically comprises the following steps:

[0054] Take 19.2g of tall oil-based dimer acid, 3.4g of 1,3 diamino-2-propanol, and 40mg of sodium phosphite into a three-necked flask, mix them uniformly with a mechanical stirrer under a nitrogen atmosphere at 80°C and heat for 1 hour, then raise the temperature to 140 °C for 12 hours, then raised the temperature to 180 °C for 6 hours, then raised the temperature to 230 °C for 2 hours, and finally cooled the reaction system to 140 °C. After the reaction, the product was named polyester amide 3.

[0055] The polyester amide 3 was subjected to sheeting and uniaxial stretching, the stretching speed was 10 mm / min, the stretching strain was 150%, and the stretched product was named heat-shrinkable film 3 . Such as figure 1 Shown: After the raw material tall oil-based dimer acid of the present invention is reacted according to Example 1, the carboxyl peak basically disappears, and the p...

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Abstract

The invention discloses application of polyester amide as a heat shrinkage film, and relates to the technical field of high polymer materials. Polymer amide is subjected to tabletting and single-axis stretching. The preparation method of polyester amide comprises the following steps: (1) heating and dissolving 30-200 parts by weight of liquid dicarboxylic acid and 15-95 parts by weight of a diamine compound containing beta hydroxyl, and uniformly stirring to form a reaction solution; (2) adding 0.05-0.5 part by weight of a catalyst, heating to 65-100 DEG C in a nitrogen atmosphere, and reacting for 1-6 hours; (3) heating the reaction solution to 100-180 DEG C, and reacting for 3-18 hours; (4) heating the reaction system to 180-240 DEG C, and reacting for 0.5-4 hours; and (5) cooling the reaction system of the reaction solution to 100-180 DEG C to obtain the polyester amide. The polyester amide heat shrinkage film has the advantages that the polyester amide heat shrinkage film not only can replace a PET heat shrinkage film, but also does not melt even at the high temperature of 300 DEG C.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to the application of a polyester amide as a heat-shrinkable film. Background technique [0002] In life, plastics are used in all aspects of daily life. Common plastics use synthetic resin as the main component, and then add auxiliary materials such as plasticizers, fillers, lubricants or colorants to form plastic materials with certain characteristics. In modern society, various products of clothing, food, housing and transportation are packaged with plastic films, so that the products can achieve various functions of beauty, dust protection and sealing. But there are also many weaknesses in plastic films, such as poor temperature resistance, easy to crack or be torn, etc. [0003] In the early 1950s, British scientist Arthur discovered that polyethylene (PE) could be turned into a heat-shrinkable material with a special "memory effect" after being processed by irradia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L77/12C08G69/44B29C55/04
CPCC08J5/18C08G69/44B29C55/04C08J2377/12Y02E60/10
Inventor 汪钟凯丁永良刘成
Owner ANHUI AGRICULTURAL UNIVERSITY
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