Electroplating ABS composite and preparation method thereof

A composite material and ABS resin technology, which is applied in the field of ABS composite materials for electroplating and its preparation, can solve the problems of cracking and fine lines of metal coating, increase internal stress of plastic injection parts, etc. , Enhance the effect of physical anchoring strength

Inactive Publication Date: 2010-09-01
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of general heat-resistant agents usually increases the internal stress of plastic injection molded parts, which will lead to the appearance of cracks and fine lines in the metal coating during the electroplating process or high and low temperature cycle tests.

Method used

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  • Electroplating ABS composite and preparation method thereof
  • Electroplating ABS composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Add 45kg of SEBS-GMA graft, 5kg of dispersant, 0.1kg of bisphenol A and 0.1kg of commercially available IG-168 into a high-speed mixer and stir for 20 minutes before discharging to obtain mixture A.

[0053] Add 50kg of heat-resistant agent from the main feeding port of the twin-screw extruder, add the mixture A from the side feeding port of the twin-screw extruder, extrude and granulate to obtain heat-resistant masterbatch, and the barrel temperature of the extruder is 240-300°C, the screw speed is 180-600 rpm.

[0054] Put 62kg of emulsion method ABS resin, 20kg of bulk method ABS-GMA resin, 15kg of heat-resistant masterbatch, 0.1kg of bisphenol A and 0.1kg of commercially available IG-168 into a high-speed mixer and stir for 5-30 minutes before discharging to obtain a mixture b.

[0055] The mixture B is added from the main feeding port of the twin-screw extruder, and 3kg of nano-scale calcium carbonate is added from the side feeding port of the twin-screw extruder,...

Embodiment 2-5

[0057] In order to better reflect the characteristics of the above-mentioned electroplated ABS, which is excellent in the high and low temperature cycle test, the present invention uses the influence of different bulk method ABS-GMA resin dosages, different heat-resistant masterbatch dosages, and different nanoscale filler dosages on product performance. The specific main ingredient formula is shown in Table 1, including the following steps:

[0058] Add SEBS-GMA graft, dispersant, bisphenol A and commercially available IG-168 into a high-speed mixer and stir for 20 minutes before discharging to obtain mixture A.

[0059] Add the heat-resistant agent from the main feeding port of the twin-screw extruder, add the mixture A from the side feeding port of the twin-screw extruder, control the barrel temperature of the extruder to 240-300°C, and the screw speed to 180- 600 rpm, extrusion granulation to obtain heat-resistant masterbatch.

[0060] Put the emulsion method ABS resin, b...

Embodiment 6

[0083] An ABS composite material for electroplating and a preparation method thereof, comprising the following steps:

[0084] (1) Preparation of heat-resistant masterbatch: 30kg of polar grafts of flexible resin, 30kg of heat-resistant agent, 3kg of dispersant, and 0.5kg of antioxidant are used as raw materials. Among them, the glass transition temperature of the polar graft of the flexible resin is lower than -40°C, and it has good compatibility with the ABS substrate. It is a maleic anhydride graft of styrene-butadiene-styrene block copolymer Copolymer, heat-resistant agent adopts the terpolymer of maleic anhydride and methyl methacrylate, styrene, and maleic anhydride content is 10% (wt%) in this terpolymer, and methyl methacrylate content is 20% (wt%), the styrene content is 70% (wt%) and the glass transition temperature is 210°C. The dispersant is a binary random copolymer of ethylene-methacrylate, and the antioxidant is hindered monophenol and A mixture of phosphite co...

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Abstract

The invention relates to an electroplating ABS composite and a preparation method thereof. The composite comprises the following components in part by weight: 40 and 80 parts of emulsion process ABS resin, 5 to 30 parts of mass ABS polar graft, 10 to 30 parts of heat-resisting master batch, 2 to 8 parts of nano stuffing and 0.1 to 0.5 part of antioxygen. The preparation method comprises the following steps of: putting the components except the nano stuffing into a high-speed stirrer and stirring the components to obtain a mixture; adding the mixture into a two-screw extruder from a main feed inlet of the two-screw extruder and adding the nano stuffing into the two-screw extruder from a lateral feed inlet; and extruding and granulating the obtained product to obtain samples. The electroplating ABS composite prepared by the method has a good electroplating effect, the high solidity of a metal electroplated layer, high temperature resistance, high dimensional stability and high impacting strength, avoids part buckling deformation, metal coat cracking, bubbling, plastic exposure, even large area obscission and the like in a high and low-temperature cycling test and is particularly applied to automotive electroplated parts such as a radiator grille and an instrument frame of an automobile.

Description

technical field [0001] The invention relates to a polymer composite material and a preparation method thereof, in particular to an ABS composite material for electroplating and a preparation method thereof. Background technique [0002] At present, electroplating, as a main means of metallized surface treatment of plastic parts, is widely used in industries such as automobiles, appliances and electronic appliances due to its excellent metal texture, weather resistance, light weight and low price. Although ABS is easy to be electroplated due to its own molecular structure and phase composition, making it a very widely used electroplating material, there are still big problems for some application environments and environments with relatively harsh technical requirements. For example, the automotive industry usually requires electroplated plastic products to withstand a high and low temperature cycle test of 5-10 cycles from -40°C / 4h to 90-100°C / 4h. Since the linear expansion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L55/02C08L51/00C08K3/26C25D7/00C25D9/02
Inventor 邱卫美陈伶辛敏琦李荣群唐银花董建廷
Owner SHANGHAI KUMHO SUNNY PLASTICS
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