Polypropylene composite material available for chemical micro-foaming and preparation method thereof

A composite material, polypropylene technology, applied in the field of polypropylene composite material and its preparation, can solve the problems of low melt strength, difficult control of cells, and collapse of cells, and achieves high melt strength, low cell diameter, and cell collapse. Even and fine hole effect

Inactive Publication Date: 2017-09-22
ORINKO NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a polypropylene micro-foaming material and a preparation method thereof, so as to solve the problem of low melt strength and difficult control of cells in the foaming process of polypropylene in the prior art. Bubbles and bubble collapse serious problems

Method used

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  • Polypropylene composite material available for chemical micro-foaming and preparation method thereof
  • Polypropylene composite material available for chemical micro-foaming and preparation method thereof
  • Polypropylene composite material available for chemical micro-foaming and preparation method thereof

Examples

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Effect test

Embodiment 1

[0037] A polypropylene composite material that can be used for chemical micro-foaming in this embodiment is composed of the following raw materials in parts by weight:

[0038]

[0039] Concrete preparation method comprises the following steps:

[0040] (1) Preparation of modified active calcium silicate: Dissolve 0.4 parts of modifier and 0.5 parts of crosslinking aid in 1L of ethanol to form a solution, add 20 parts of active calcium silicate into a three-necked flask, and heat to 60°C , stirred for 60 minutes, poured into a large beaker, centrifuged, washed 3 times with deionized water, vacuum-dried the centrifuged product at 50°C for 24 hours, ball milled the dried product in a ball mill, and the speed of the ball mill was controlled at 100-250r / min to obtain Modified active calcium silicate;

[0041] (2) Preparation of polypropylene composite material: the modified active calcium silicate prepared in step (1) was mixed with 65 parts of polypropylene, 15 parts of tough...

Embodiment 2

[0044] A polypropylene composite material that can be used for chemical micro-foaming in this embodiment is composed of the following raw materials in parts by weight:

[0045]

[0046] Concrete preparation method comprises the following steps:

[0047] (1) Preparation of modified active calcium silicate: Dissolve 0.8 parts of modifier and 0.2 parts of crosslinking aid in 1L of ethanol to form a solution, add 20 parts of active calcium silicate into a three-necked flask, and heat to 80°C , stirred for 30 minutes, poured into a large beaker, centrifuged, washed 3 times with deionized water, vacuum-dried the centrifuged product at 80°C for 48 hours, and ball milled the dried product in a ball mill. The speed of the ball mill was controlled at 100-250r / min to obtain Modified active calcium silicate;

[0048] (2) Preparation of polypropylene composite material: the modified active calcium silicate prepared in step (1) was mixed with 65 parts of polypropylene, 10 parts of tough...

Embodiment 3

[0051] A polypropylene composite material that can be used for chemical micro-foaming in this embodiment is composed of the following raw materials in parts by weight:

[0052]

[0053]

[0054] Concrete preparation method comprises the following steps:

[0055] (1) Preparation of modified active calcium silicate: Dissolve 0.4 parts of modifier and 0.4 parts of crosslinking aid in 1L of ethanol to form a solution, add 10 parts of active calcium silicate into a three-necked flask, and heat to 70°C , stirred for 50 minutes, poured into a 1000mL large beaker, centrifuged, washed 4 times with deionized water, vacuum-dried the centrifuged product at 70°C for 36 hours, and ground the dried product to obtain modified active calcium silicate;

[0056] (2) Preparation of polypropylene composite material: the modified active calcium silicate prepared in step (1) was mixed with 85 parts of polypropylene, 15 parts of toughening agent, 0.15 part of antioxidant 1010, 0.15 part of anti...

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Abstract

The invention discloses a polypropylene composite material available for chemical micro-foaming and a preparation method thereof. The polypropylene composite material is uniformly mixed with a composite foaming agent, and the polypropylene composite material is formed by adopting secondary mold-opening injection molding, wherein the polypropylene composite material is prepared from the following components in parts by weight: 65 to 85 parts of polypropylene, 10 to 20 parts of active calcium silicate, 10 to 15 parts of a flexibilizer, 0.4 to 0.8 part of a modifier, 0.2 to 0.4 part of an antioxidant ,0.5 to 1 part of a lubricating agent, 0.5 to 1 part of a cross-linking agent, 0.2 to 0.5 part of a cross-linking assistant and 0 to 3 parts of other assistants. The surface of the active calcium silicate is coated by adopting synergy of the cross-linking assistant and the surface active agent, the interfacial force with resin is strengthened, the dispersion is more uniform, and simultaneously a polypropylene cross-liking reaction is triggered through the cross-linking agent to form a network-shaped structure, so that the melt strength of the composite system is improved, and the composite material has excellent foaming performance; and the composite material has the characteristics of wide source of raw materials, low cost, small density, high dimensional stability, excellent mechanical performance, heat insulation, sound insulation and noise reduction.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, in particular to a polypropylene composite material which can be used for chemical micro-foaming and a preparation method thereof. Background technique [0002] Because of its excellent mechanical properties, heat resistance, non-toxicity, corrosion resistance, electrical insulation and other advantages, polypropylene is widely used in automotive interior and exterior parts such as bumpers, side guards, deflectors, instrument panels, and glove boxes. , is one of the most widely used and most widely used materials in automotive plastics. As we all know, the improvement of global safety, environmental protection, and energy-saving standards has put forward new requirements for polypropylene automotive plastics. Designers also hope that polypropylene plastics will become lighter and lighter to improve vehicle performance and reduce energy consumption. Compared with conventional polypropyl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/08C08L23/06C08K13/06C08K9/04C08K3/34C08K5/098C08J9/08
CPCC08L23/14C08J9/08C08J2203/02C08J2323/14C08J2423/08C08K2201/003C08L2203/14C08L2205/03C08L23/0815C08L23/06C08K13/06C08K9/04C08K3/34C08K5/098
Inventor 石阳阳周海李飞夏洋李荣群
Owner ORINKO NEW MATERIAL CO LTD
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