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Preparation method of interface interlocked polyphase polypropylene-based polymer blending composite material

A technology of heterogeneous polypropylene and polymer materials, which is applied in melt spinning, textile and papermaking, and filament forming treatment to achieve the effects of improving mechanical strength, interfacial compatibility, and interfacial properties

Active Publication Date: 2017-07-21
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is currently no compatibilizer that is suitable for all polypropylene-based blends.

Method used

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  • Preparation method of interface interlocked polyphase polypropylene-based polymer blending composite material
  • Preparation method of interface interlocked polyphase polypropylene-based polymer blending composite material
  • Preparation method of interface interlocked polyphase polypropylene-based polymer blending composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The raw materials in this example are aromatic beta nucleating agent (TMB-5), homopolypropylene (T30S) and nylon 66 (PA66), the mass ratio of which is 0.1:95:5.

[0034] First, TMB-5 and nylon 66 are melted and pre-mixed and extruded at 270 °C, and then the pre-mixed material is mixed with homopolypropylene and put into a screw extruder through a controlled multi-phase melt blending extrusion process. (The temperature of the melting section of the extruder is 270 °C), the self-assembly temperature of the second stage (ie the die section) is 180 °C, and the extrusion speed is 100 r / min. The prepared homopolymer polypropylene / nylon 66 composite material not only has The interface interlocking structure, and because TMB-5 can self-assemble at the interface of homopolypropylene and nylon 66 to form an interlocking structure with an incompatible interface, the mechanical properties test results show that the interface interlocking structure makes the composite material Compa...

Embodiment 2

[0036] The raw materials in this example are sorbitol alpha nucleating agent (DBS), block copolymerized polypropylene (EPS30R) and polylactic acid (PLA), and the mass ratio is 0.5:60:40.

[0037] First, melt premix and extrude DBS and polylactic acid at 190 °C, then mix the premix with block copolymerized polypropylene and put it into the injection molding machine. The temperature of the second stage is 230 °C), the self-assembly temperature of the second stage (ie the die section) is 170 °C, and the injection speed is 80 r / min. The prepared block copolymer polypropylene / polylactic acid blend composite material not only has interface interlocking structure, and because DBS can self-assemble at the interface of block copolymerized polypropylene and polylactic acid to form an interlocking structure of an incompatible interface, the mechanical property test results show that the interlocking structure of the interface increases the tensile strength of the composite material. and ...

Embodiment 3

[0039] The raw materials in this example are rare earth beta nucleating agent (WBG-II), random copolymerized polypropylene (R200P) and polyethylene terephthalate (FR515), the mass ratio of which is 1:90:10.

[0040] First melt premix and extrude WBG-II and polyethylene terephthalate at 260°C, then mix the premix with the random copolymer and put it into a vulcanizer through a controlled multiphase melt blending The molding process (the temperature of the vulcanizer is 260°C and the pressure is maintained for 5mins) is moved into the second stage (ie, another vulcanizer), and the self-assembly temperature of the other vulcanizer is set to 160°C and the pressure is maintained for 5mins. The prepared random copolymer polypropylene / polyethylene terephthalate blend composite not only has an interfacial interlocking structure, but also because WBG-II can be used at the interface between random copolymer polypropylene and polyethylene terephthalate. The interlocking structure of the ...

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Abstract

The invention provides a preparation method of a polypropylene-based polymer blending composite material, which can be used for constructing two phases or more than two phases of interlocked interfaces by self-assembly of polypropylene-based molecular interfaces and improving the interfacial strength of a polyphase polymer system. The preparation method comprises the following steps: firstly, carrying out melting and preblending extrusion on one or more plastic polymer materials except polypropylene and a nucleating agent capable of realizing melting-self-assembly; secondly, premixing an obtained substance with the polypropylene; thirdly, carrying out first-stage polyphase melting and blending and second-stage temperature control until self-assembly with at least 2s within a self-assembly temperature section of the nucleating agent in sequence, and carrying out treatment, namely obtaining a finished product. According to the preparation method provided by the invention, overall performance of the polypropylene-based polymer blending composite material is greatly improved, and a novel method is provided for interface design and optimization of a weak interface polyphaser polymer system; in addition, the preparation method has the advantages of wider application range and suitability for popularization.

Description

technical field [0001] The invention belongs to the technical field of polymer material processing, and in particular relates to a preparation method of an interface interlocking heterophasic polypropylene-based polymer blended composite material. Background technique [0002] Polypropylene is the most important polymer material, and its annual output exceeds 10 million tons. Achieving its high performance is an important direction to expand the application of polypropylene. Among them, polymer blending is an important way to achieve high performance and multi-functionality of polymer materials. The polymer blend composite material has the characteristics of multi-phase and multi-component, and there is an interface different from the bulk property between each component phase. This unique interface can connect the components of the material together, and the components can effectively transfer loads through the interface. The properties of blended composites not only dep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08L59/00C08L67/04C08L75/04C08L23/06C08L47/00C08L53/00C08L77/06C08L67/02C08L25/06C08L69/00C08L77/02C08L29/04C08L79/08C08K5/20C08K5/1575C08K5/098C08K5/523B29C47/92B29C45/77B29C44/60D01D1/06D01D5/08B29C48/92
CPCB29C44/60B29C45/77B29C48/92B29C2945/76595B29C2948/9258C08L23/06C08L23/12C08L23/14C08L47/00C08L53/00C08L59/00C08L67/04C08L75/04C08L2205/025C08L2205/03C08L2205/24C08L2205/242D01D1/065D01D5/08C08L77/06C08K5/20C08K5/1575C08L67/02C08L25/06C08K5/098C08L69/00C08K5/523C08L79/08C08L29/04C08L77/02
Inventor 聂敏石绍宏王琪李怡俊
Owner SICHUAN UNIV
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