High-melt-strength polypropylene material resistant to cyclic processing as well as preparation method and application thereof

A high melt strength, polypropylene material technology, applied in the field of polymer materials, can solve the problems of non-recyclable processing and reduced melt strength, so as to avoid the reduction of melt strength, reduce chain scission, and improve melt strength. Effect

Active Publication Date: 2022-02-15
JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD +1
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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 to overcome the defects and deficiencies that the melt strength of existing polypropylene materials is greatly reduced during recycling processing and cannot be used for recycling processing, and provides A high melt strength polypropylene material resistant to cyclic processing

Method used

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  • High-melt-strength polypropylene material resistant to cyclic processing as well as preparation method and application thereof
  • High-melt-strength polypropylene material resistant to cyclic processing as well as preparation method and application thereof
  • High-melt-strength polypropylene material resistant to cyclic processing as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1～8

[0090] A high-melt-strength polypropylene material resistant to cyclic processing, in parts by weight, comprising the components shown in Table 1 below:

[0091] Table 1

[0092]

[0093]

[0094] The preparation method of the high-melt-strength polypropylene material resistant to cyclic processing of the above-mentioned embodiments 1-18 is specifically:

[0095] S1. The modifier aminosilane coupling agent, nucleating agent and talc powder were weighed and then mixed in a high-speed mixer at 100°C. The mixing speed was 300r / min and the mixing time was 6min to obtain mixture A;

[0096] S2. Add the resin matrix, lubricant, main antioxidant, and auxiliary antioxidant together with the mixture A into the high-speed mixer after weighing, the mixing speed is 300r / min, and the mixing time is 5min to obtain the mixture B;

[0097] S3. Adding the mixture B to a twin-screw extruder for melt extrusion, pelletizing and cooling to obtain a high-melt-strength polypropylene material ...

Embodiment 19

[0099] A high-melt-strength polypropylene material resistant to cyclic processing, its components and content are basically the same as in Example 2, the difference is that T-01 with a particle size of 1000 mesh is used as talc powder.

[0100] A preparation method of a high melt strength polypropylene material resistant to cyclic processing, specific example 2.

Embodiment 20

[0102] A high-melt-strength polypropylene material resistant to cyclic processing, its components and content are basically the same as in Example 2, the difference is that the talc powder is TYT-777A with a particle size of 3000 mesh.

[0103] A preparation method of a high melt strength polypropylene material resistant to cyclic processing, specific example 2.

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Abstract

The invention discloses a high-melt-strength polypropylene material resistant to cyclic processing as well as a preparation method and application thereof, and belongs to the technical field of high polymer materials. The high-melt-strength polypropylene material resistant to cyclic processing comprises the following components in parts by weight: 50 to 80 parts of polypropylene, 20 to 40 parts of talcum powder, 0.1 to 3 parts of a modifier, 0.05 to 2 parts of a nucleating agent, 0.1 to 3 parts of a lubricant, and 0.2 to 2 parts of an antioxidant. The talcum powder increases the viscosity of the material and reduces chain scission in cyclic processing, the nucleating agent refines matrix crystal nucleuses, the modifier improves the dispersibility of the components and reduces interface defects, and the synergistic effect of the lubricant and the antioxidant is combined, so that the melt strength of the polypropylene material is effectively improved; and moreover, the melt strength reduction in the cyclic processing process is avoided, and the polypropylene material can be widely applied to cyclic processing preparation of polypropylene materials. The melt strength of the polypropylene material is 18-30 cN, and the retention rate of the melt strength is still 48-60% after three times of extrusion preparation.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high-melt-strength polypropylene material resistant to cyclic processing and its preparation method and application. Background technique [0002] Polypropylene is a general-purpose plastic, which has the advantages of high melting point, low density, good chemical stability, easy recycling, and low price. However, due to the linear structure of the molecular chain, the conventional polypropylene material has no strain hardening effect in the molten state. Resulting in its low melt strength, thus greatly limiting the application of polypropylene. At the same time, polypropylene is sheared by equipment during the melting process, and the molecular chain will be broken, the molecular weight will decrease, and the melt strength will be low. In addition, the softening point of polypropylene is close to the melting point. When the temperature is higher than the melting po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K13/02C08K3/34C08K5/544C08K5/09C08K5/5435C08K5/10C08K7/00C08K3/30C08K3/04C08L51/06C08L23/14
CPCC08L23/12C08K13/02C08K3/34C08K5/544C08K3/346C08K5/09C08K5/5435C08K5/10C08K7/00C08K3/30C08K3/042C08K2003/3009C08K2201/014C08K2201/005C08L2205/242C08L51/06C08L23/14
Inventor 左立增夏建盟陈延安吴亦建杨波卢朝亮孙刚谢正瑞赵鹏伟陈桂吉
Owner JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD
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