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Self-nucleation method for high-polymer materials

A polymer material and self-nucleation technology, applied in the direction of single-component polyester rayon, fiber chemical characteristics, textiles and papermaking, etc., can solve the problem of narrowing the use range of polymer matrix materials and reducing the nucleation effect of compatibility To achieve significant economic and social benefits, improve material crystallization and performance, and achieve good material performance

Inactive Publication Date: 2018-04-17
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently used nucleating agents are mainly heterogeneous nucleating agents. The dispersion of such nucleating agents and their poor compatibility with the polymer matrix may reduce the nucleation effect; and the introduction of heterogeneous components may reduce the The scope of use of polymer matrix materials

Method used

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  • Self-nucleation method for high-polymer materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1, the method for polybutylene succinate self-nucleation

[0025] The clathrate of polybutylene succinate and urea (mass ratio: 1:2) was electrospun and heat-treated to obtain the clathrate; the urea was removed to obtain the extended chain crystal of polybutylene succinate (referred to as self-nucleating agent). The melting point of polybutylene succinate linear crystals measured by DSC test is 136.8°C. Add the self-nucleating agent into the polybutylene succinate raw material matrix at a mass ratio of 1:99, and use a twin-screw extruder to blend for 10 minutes (blending temperature is 130°C) to obtain Crystalline polybutylene succinate material.

[0026] Using DSC tests (such as figure 1 As shown), the temperature was increased from room temperature to 130 °C at a heating rate of 10 °C / min, and after a constant temperature of 5 minutes, it was lowered to room temperature at 10 °C / min, and the obtained polybutylene succinate containing extended chain crys...

Embodiment 2

[0027] Embodiment 2, the method for polybutylene succinate self-nucleation

[0028] The clathrate of polybutylene succinate and urea (mass ratio: 1:2) was electrospun and heat-treated to obtain the clathrate; the urea was removed to obtain the extended chain crystal of polybutylene succinate (referred to as self-nucleating agent). The melting point of polybutylene succinate linear crystals measured by DSC test is 136.8°C. The self-nucleating agent was added to the polybutylene succinate raw material matrix at a mass ratio of 5:95, and blended for 15 minutes using a Brabender internal mixer (blending temperature was 130° C.) to obtain Core polybutylene succinate material.

[0029] Using DSC test, increase the temperature from room temperature to 130 °C at a rate of 10 °C / min, keep the temperature for 5 minutes, and then lower it to room temperature at 10 °C / min, the obtained polybutylene succinate containing extended chain crystal nuclei The crystallization temperature of th...

Embodiment 3

[0030] Embodiment 3, the method for self-nucleation of polybutylene succinate

[0031] Blend polybutylene succinate and urea (mass ratio: 1:2) at 125°C with a Brabender for 15 minutes to obtain an inclusion compound of polybutylene succinate and urea; remove urea to obtain polybutylene succinate Extended chain crystals of butylene glycolate (referred to as self-nucleating agent). The melting point of the extended chain crystals measured by DSC test is 137.2°C. Add the self-nucleating agent into the polybutylene succinate raw material matrix with a mass ratio of 10:90, and use a twin-screw extruder to blend for 20 minutes (blending temperature is 130°C) to obtain Crystalline polybutylene succinate material.

[0032] Using DSC test, increase the temperature from room temperature to 130 °C at a rate of 10 °C / min, keep the temperature for 5 minutes, and then lower it to room temperature at 10 °C / min, the obtained polybutylene succinate containing extended chain crystal nuclei T...

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Abstract

The invention discloses a self-nucleation method for high-polymer materials. The self-nucleation method includes steps of blending the high-polymer materials with extended-chain crystals used as self-nucleation agents to obtain high-polymer materials with the self-nucleation agents. A mass ratio of the extended-chain crystals to the high-polymer materials is 0.1-20:100. The self-nucleation methodhas the advantages that the extended-chain crystals which are prepared from high-polymer materials and have high melting points are used as nucleating agents for high-polymer matrixes, and accordinglycrystallization and the performance of the materials can be improved; the extended-chain crystals still can be kept in melt of the high-polymer matrixes and can be used as the nucleating agents for the matrixes when cooled, and accordingly the nucleation efficiency can be improved; preparation procedures are good in operability and high in production efficiency, the materials obtained by the aidof the self-nucleation method are good in performance, and accordingly the self-nucleation method has obvious economic and social benefits.

Description

technical field [0001] The invention relates to a method for self-nucleation of polymer materials, belonging to the technical field of polymer materials. Background technique [0002] In recent years, polymer materials have been widely used in various fields of life and production. However, compared with traditional materials such as metals and ceramics, polymer materials have poor mechanical properties and heat resistance. For most crystalline polymer materials, their crystallization ability and behavior have a great influence on the material properties, and the low crystallization rate and crystallinity seriously restrict their application and development. In order to improve the crystallization ability of polymer materials and improve their mechanical properties, the most widely used modification method is to add nucleating agents to the polymer matrix. The currently used nucleating agents are mainly heterogeneous nucleating agents. The dispersion of such nucleating age...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L67/04D01F6/92D01F1/10
CPCC08L67/02C08L67/04C08L2205/025C08L2205/16C08L2205/24D01F1/10D01F6/92
Inventor 叶海木陈晓彤刘萍姚淑芳
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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