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Preparation method of PP/ABS micro-foaming material

A technology of micro-foaming and foaming masterbatch, which is applied in the field of preparation of PP/ABS micro-foaming materials, can solve the problems of high requirements for process condition control, and achieve reduced equipment operating costs, uniform distribution of micropores, and reduced The effect of product internal stress

Active Publication Date: 2018-07-17
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the basic structure of the current injection molding machine is not conducive to its production of products with better microporous structure, and it has higher requirements for process condition control, which also poses a challenge to the microfoaming injection of PP / ABS composites

Method used

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  • Preparation method of PP/ABS micro-foaming material
  • Preparation method of PP/ABS micro-foaming material
  • Preparation method of PP/ABS micro-foaming material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] First, the foam masterbatch is manufactured. Weigh raw materials according to the following mass: LDPE: 0.58kg, AC: 0.2kg, ZnO: 0.02kg, high melting point PE wax: 0.1kg, talcum powder: 0.1kg. After the raw materials are dried separately, they are mixed uniformly in a mixer and a foam masterbatch is obtained through a twin-screw extruder, and the melt temperature is 130°C during the extrusion process;

[0037] Next, prepare the PP / ABS mixture. Weigh the dried raw materials according to the following mass: PP: 1kg, ABS: 0.1kg, PE-c-GMA: 0.02kg, nano-montmorillonite: 0.02kg, high melting point PE wax: 0.05kg. These raw materials are mixed uniformly in a mixer to form a PP / ABS compound, and then melted, extruded and pelletized through an ordinary plastic extruder, and the melt temperature is controlled at 180°C during the extrusion process;

[0038] At the same time, put the prepared foam masterbatch into a vacuum dryer and activate it for 20 minutes in an environment of ...

Embodiment 2

[0043] First, the foam masterbatch is manufactured. Weigh raw materials according to the following mass: LDPE: 0.49kg, AC: 0.1kg, ZnO: 0.01kg, high melting point PE wax: 0.1kg, talcum powder: 0.3kg. After the raw materials are dried separately, they are mixed uniformly in a mixer and a foam masterbatch is obtained through a twin-screw extruder, and the melt temperature is 140°C during the extrusion process;

[0044] Next, prepare the PP / ABS mixture. Weigh the dried raw materials according to the following mass: PP: 1kg, ABS: 0.2kg, PE-c-GMA: 0.03kg, nano-montmorillonite: 0.012kg, high melting point PE wax: 0.1kg. These raw materials are mixed uniformly in a mixer to form a PP / ABS compound, and then melted, extruded and pelletized through an ordinary plastic extruder, and the melt temperature is controlled at 190°C during the extrusion process;

[0045] At the same time, put the prepared foam masterbatch into a vacuum dryer and activate it for 30 minutes in an environment of ...

Embodiment 3

[0050] First, the foam masterbatch is manufactured. The raw materials were weighed according to the following mass: LDPE: 0.464kg, AC: 0.3kg, ZnO: 0.036kg, high melting point PE wax: 0.1kg, talcum powder: 0.1kg. After the raw materials are dried separately, they are mixed uniformly in a mixer and a foam masterbatch is obtained through a twin-screw extruder, and the melt temperature is 120°C during the extrusion process;

[0051] Next, prepare the PP / ABS mixture. Weigh the dried raw materials according to the following mass: PP: 1kg, ABS: 0.25kg, PE-c-GMA: 0.025kg, nano-montmorillonite: 0.07kg, high melting point PE wax: 0.075kg. These raw materials are mixed uniformly in a mixer to form a PP / ABS compound, and then melted, extruded and pelletized through an ordinary plastic extruder, and the melt temperature is controlled at 190°C during the extrusion process;

[0052] At the same time, put the prepared foam masterbatch into a vacuum dryer and activate it for 25 minutes in an...

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Abstract

The invention discloses a preparation method of a PP / ABS micro-foaming material. The method comprises the following steps that (1) a foaming agent, a foaming auxiliary agent, a nucleating agent and the like are mixed with a carrier resin and then be made into foaming master batch through a twin-screw extrusion mechanism; (2) PP, ABS, nanoparticles and compatibilizer are uniformly mixed to preparea PP / ABS mixture; (3) the PP / ABS mixture of step (2) is melted, extruded, and granulated through a twin-screw extruder to prepare a uniform composite; (4) the foaming master batch of step (1) is activated and mixed with the composite prepared in step (3) to form a mixed material; (5) a PP / ABS microporous product can be produced by adding the mixed material into an injection molding machine. The preparation method of the PP / ABS micro-foaming material has the advantages that on one hand, the micro-foaming performance of the PP / ABS can be effectively improved, the uniform density of cells is high, and the size is small, on the other hand, the influence of the incompatibility between PP and ABS on mechanical properties of the PP / ABS composite material is avoided, the cost is low, and the processing and production are convenient.

Description

technical field [0001] The invention relates to a preparation method of a PP / ABS micro-foaming material, which belongs to the technical field of processing and manufacturing of polymer materials. Background technique [0002] In recent years, plastic injection products have been widely used due to the characteristics of strong production adaptability, high efficiency, and easy automation. Among them, polypropylene (PP) resin has light weight, abundant raw material sources, superior performance-price ratio and excellent heat resistance. , chemical corrosion resistance, easy recycling and other characteristics, it is a general-purpose thermoplastic resin widely used in injection products. With the shortage of energy, especially oil, how to save plastic raw materials has led to the generation and development of foamed products. According to the different types of micropore formation and foaming agent, microfoaming methods can often be divided into chemical foaming, physical fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L55/02C08L51/06C08L23/06C08K3/34C08K3/22C08K3/36C08K3/26C08J9/10C08J3/22
CPCC08J3/226C08J9/0061C08J9/0066C08J9/0071C08J9/103C08J2203/04C08J2323/12C08J2423/06C08J2451/06C08J2455/02C08K3/346C08K3/36C08K2003/2241C08K2003/265C08K2201/011
Inventor 董斌斌周应国刘春太曹伟
Owner ZHENGZHOU UNIV
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