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Microbubble injection moulding ABS composite material and preparation method thereof

A composite material and micro-foaming technology, applied in the field of polymer materials, can solve the problems of reduced mechanical properties of ABS, collapse and rupture of gas bubbles, low melt strength, etc., to improve tensile strength, improve fluidity, and improve melt the effect of strength

Active Publication Date: 2018-06-15
ZHEJIANG PRET NEW MATERIALS +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a micro-foaming injection-molded ABS composite material and a preparation method thereof, the melt strength of which is sufficient to support cell growth during the preparation of foamed materials, Solve the problems of bubble collapse and rupture caused by low melt strength resulting in a large amount of gas escaping in the foaming process of the prior art, and the reduction of mechanical properties of ABS due to foaming

Method used

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  • Microbubble injection moulding ABS composite material and preparation method thereof
  • Microbubble injection moulding ABS composite material and preparation method thereof
  • Microbubble injection moulding ABS composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0033] The present embodiment provides a kind of preparation method of microfoaming injection molding ABS composite material, comprises the following steps:

[0034] Put 64.85 parts of ABS, 10 parts of heat-resistant agent, 5 parts of toughening agent, 0.05 part of crosslinking agent and 0.1 part of antioxidant into a high-speed mixer according to the stated weight ratio and mix for 4-6 minutes to obtain a homogeneous mixture of the above components . Put the above-mentioned component mixture into the twin-screw extruder from the hopper, add 20 parts of SAN resin to the second half of the screw to extrude and granulate, and obtain high-fluidity and high-melt strength ABS composite materials; the temperature of each section of the extruder As follows: Zone 1 200~220℃, Zone 2 200~225℃, Zone 3 210~220℃, Zone 4 200~225℃, Zone 5 210~225℃, Zone 6 215~230℃, Zone 7 215~230℃ , head temperature 220 ~ 230 ℃, pressure 12 ~ 18MPa, the material stays in the extruder for 1 ~ 2min.

[0035]...

Embodiment 2

[0038] 64.85 parts of ABS, 10 parts of heat-resistant agent, 5 parts of toughening agent, 0.1 part of crosslinking agent and 0.1 part of antioxidant are put into a high-speed mixer according to the weight ratio and mixed for 4-6 minutes to obtain a uniform mixture of the above components. Put the above component mixture into the twin-screw extruder from the hopper, add 20 parts of SAN resin to the second half of the screw to extrude and granulate, and obtain high fluidity and high melt strength ABS composite material; the temperature of each section of the extruder As follows: Zone 1 200~220℃, Zone 2 200~225℃, Zone 3 210~220℃, Zone 4 200~225℃, Zone 5 210~225℃, Zone 6 215~230℃, Zone 7 215~230℃ , head temperature 220 ~ 230 ℃, pressure 12 ~ 18MPa, the material stays in the extruder for 1 ~ 2min.

[0039] Put 98 parts of high fluidity and high melt strength ABS composite material and 2 parts of modified sodium bicarbonate foaming agent masterbatch into a mixer and mix to obtain a ...

Embodiment 3

[0042] 64.85 parts of ABS, 10 parts of heat-resistant agent, 5 parts of toughening agent, 0.5 part of crosslinking agent and 0.1 part of antioxidant are put into a high-speed mixer according to the weight ratio and mixed for 4-6 minutes to obtain a uniform mixture of the above components. Put the above component mixture into the twin-screw extruder from the hopper, add 20 parts of SAN resin to the second half of the screw to extrude and granulate, and obtain high fluidity and high melt strength ABS composite material; the temperature of each section of the extruder As follows: Zone 1 200~220℃, Zone 2 200~225℃, Zone 3 210~220℃, Zone 4 200~225℃, Zone 5 210~225℃, Zone 6 215~230℃, Zone 7 215~230℃ , head temperature 220 ~ 230 ℃, pressure 12 ~ 18MPa, the material stays in the extruder for 1 ~ 2min.

[0043]Put 98 parts of high fluidity and high melt strength ABS composite material and 2 parts of modified sodium bicarbonate foaming agent masterbatch into a mixer and mix to obtain a m...

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Abstract

The invention discloses a microbubble injection moulding ABS composite material and a preparation method thereof. The microbubble injection moulding ABS composite material comprises the following components in parts by weight: 95-98 parts of a high-fluidity high melt-strength ABS composite material, and 2-5 parts of foaming agent master batch; wherein the high-fluidity high melt-strength ABS composite material comprises the following components in parts by weight: 55-80 parts of ABS, 10-30 parts of styrene-acrylonitrile (SAN)resin, 5-20 parts of a heat-resistant agent, 2-15 parts of a flexibilizer, 0.05-1 part of a cross-linking agent, and 0.1-2 parts of an anti-oxidant. By adding the cross-linking agent, ABS is extruded to form a micro-crosslinking structure, ABS melt-strength is increased, and uniform compact micropores can be easily obtained. The high-fluidity SAN resin is added at a rear segment of a screw, melt strength is increased, fluidity of the composite material is increased, the material is in favor of moulding processing, and is in favor of obtaining the good member surface appearance. The raw material cost is saved, and the microbubble injection moulding ABS compositematerial having the characteristics of fine and uniformly compact bubble apertures as well as good mechanical properties can be obtained.

Description

technical field [0001] The invention relates to a micro-foaming injection-molded ABS composite material and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] ABS and its alloy materials have excellent comprehensive properties and are widely used in the fields of automobiles, home appliances and transportation. Under the premise of the increasing trend of lightweight in the current automotive industry, ABS composite materials have become one of the ideal choices for lightweight composite materials. The micro-foamed ABS material has a dense surface layer and a foamed core layer structure. At the same time, on the premise of ensuring the material performance, it can significantly reduce the weight of the part, which is conducive to the realization of lightweight automobiles. Micro-foamed ABS materials have potential application value in automotive parts, such as door panels, pillars and other interior parts. ABS...

Claims

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Application Information

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IPC IPC(8): C08L55/02C08L25/12C08L23/08C08J9/08C08J3/22C08J3/24B29C45/78B29C45/77B29C45/76
CPCB29C45/76B29C45/77B29C45/78B29C2945/76498B29C2945/76531C08J3/226C08J3/246C08J9/0023C08J9/0028C08J9/0042C08J9/0061C08J9/08C08J2201/02C08J2203/02C08J2205/044C08J2355/02C08J2423/08C08J2425/06C08J2425/14
Inventor 赵丽萍蔡青周文
Owner ZHEJIANG PRET NEW MATERIALS
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