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A kind of thermoplastic polyester elastomer and its preparation and application

A thermoplastic polyester and elastomer technology, applied in the field of materials, can solve the problems of carbon emission, environmental pollution, environmental pollution and other problems

Active Publication Date: 2020-07-28
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PX is a non-renewable resource, and the manufacturing process is very polluting to the environment. Long-term exposure to the human body can easily lead to headaches, depression, insomnia, and may also cause neonatal deformities, etc., and its production process will have a large amount of carbon emissions, causing environmental pollution. With the depletion of petroleum resources and the increasing awareness of environmental protection, it has become an urgent problem to be solved in the field of polymer materials to find raw materials based on renewable resources to replace petroleum-based raw materials in whole or in part.

Method used

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  • A kind of thermoplastic polyester elastomer and its preparation and application
  • A kind of thermoplastic polyester elastomer and its preparation and application
  • A kind of thermoplastic polyester elastomer and its preparation and application

Examples

Experimental program
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preparation example Construction

[0064] The present invention also provides a kind of preparation method of described thermoplastic polyester elastomer, described method comprises the steps:

[0065] 1) The first mixture, esterification catalyst, polycondensation catalyst and auxiliary agent are provided, wherein, the first mixture comprises the following components: component (a) furandicarboxylic acid and / or its esterified product, component (b) fat Family dibasic acid and / or its esterification product and component (c) glycol;

[0066] 2) In the reactor, mixing the first mixture and the esterification catalyst to obtain a second mixture;

[0067] 3) under stirring conditions, heating the second mixture to the first reaction temperature, and reacting for the first period of time to obtain the third mixture;

[0068] 4) mixing the third mixture, the polycondensation catalyst and the auxiliary agent to obtain a fourth mixture;

[0069] 5) heating the fourth mixture to a second reaction temperature and react...

Embodiment 1

[0089] Example 1 Thermoplastic polyester elastomer 1 (the molar content of 2,5-furandicarboxylic acid is 40%, R2 is C12 alkyl)

[0090]

[0091] Add 0.08mol of 2,5-furandicarboxylic acid, 0.12mol of dodecanedioic acid, 0.30mol of ethylene glycol, and 0.0004mol of anhydrous zinc acetate into a 1000mL reactor, vacuumize and replace with nitrogen three times, Start stirring, gradually raise the temperature to 180°C, and react for 4 hours. Add antimony trioxide, triphenyl phosphate and antioxidant to the system, raise the temperature to 230°C, and control the vacuum degree below 200Pa to react for 3 hours to obtain polyethylene 2,5-furandicarboxylate copolyester, which is a thermoplastic polymer. Ester Elastomer 1.

[0092] result

[0093] NMR, DSC, TGA, mechanical properties and other tests were carried out on the thermoplastic polyester elastomer 1 respectively.

[0094] figure 1 for the thermoplastic polyester elastomer 1 1 H-NMR diagram.

[0095] From figure 1 It can...

Embodiment 2

[0107] Example 2 Thermoplastic polyester elastomer 2 (the molar content of 2,5-furandicarboxylic acid is 60%, R2 is C12 alkyl)

[0108] Same as Example 1, the difference is that the amount of 2,5-furandicarboxylic acid is 0.12 mol, and the amount of dodecanedioic acid is 0.08 mol.

[0109] After testing, the thermoplastic polyester elastomer 2 has a spline tensile strength of 20 MPa, a tensile modulus of 178 MPa, an elongation at break of 892%, a 500% elastic recovery rate of 87%, and an intrinsic viscosity of 1.2 dL / g.

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Abstract

The invention relates to a thermoplastic polyester elastomer as well as preparation and application thereof. Specifically, the thermoplastic polyester elastomer is prepared according to a preparationmethod as follows: a component (a) of furandicarboxylic acid and / or an esterified product thereof, a component (b) of aliphatic dibasic acid and / or the esterified product thereof and a component (c) of dibasic alcohol are subjected to polycondensation to obtain the thermoplastic polyester elastomer, wherein the molar amount of the component (a) to (the molar amount of the component (a) plus the molar amount of the component (b)) is 0.3 to 0.7, and the thermoplastic polyester elastomer has a 500% elastic recovery ratio of being equal to or greater than 70%. The invention further discloses the preparation and the application of the thermoplastic polyester elastomer. The thermoplastic polyester elastomer combines excellent toughness, thermal stability, elastic recovery and elongation at break. The method has the characteristics of simple process, low cost, safety, environmental friendliness and the like. The thermoplastic polyester elastomer can be widely used in the fields of automobileparts, toys, textiles and the like.

Description

technical field [0001] The invention relates to the field of materials, in particular to a thermoplastic polyester elastomer and its preparation and application. Background technique [0002] Thermoplastic elastomers refer to polymer materials that have the advantages of repeated processing of thermoplastics and the advantages of physical and mechanical properties such as high elasticity of rubber. This type of material has excellent recycling and regeneration performance, and does not need to be regenerated through chemical desulfurization like vulcanized rubber, so it has been widely studied and applied in recent years. [0003] However, the main raw materials (such as terephthalic acid) for preparing thermoplastic polyester elastomers are all from petrochemical resources. For example, terephthalic acid is primarily produced by oxidation of petroleum-derived "PX" (para-xylene). PX is a non-renewable resource, and the manufacturing process is very polluting to the environ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/58C08G63/86C08L67/06C08L67/04
CPCC08G63/58C08G63/866C08L67/04C08L67/06C08L2207/04
Inventor 贾珍刘小青王静刚朱锦江艳华
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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