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Electroplatable polycarbonate composition and preparation method thereof

A polycarbonate and polycarbonate resin technology, applied in the field of engineering plastics, can solve the problems of poor solvent resistance of MBS, easy foaming on the surface of the coating, and low strength of the substrate, so as to enhance cold resistance, enhance low temperature resistance, and prevent The hardening and brittle effect

Inactive Publication Date: 2015-09-16
SHENZHEN HALCYON NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Recently, although PC has been toughened and modified by adding MBS or high-grade rubber powder separately to PC, the low-temperature impact toughness and notch stress cracking of PC can be improved to a certain extent; however, MBS has poor solvent resistance, cannot be sprayed and electroplated, and is lower than -23°C environmental performance drops seriously; high rubber powder can improve the electroplating adhesion on the PC surface, but the low temperature resistance is poor, and the product cannot be used outdoors in cold weather
The excellent adhesion of polycarbonate resin metal coatings can be improved by vinyl copolymers and grafted rubber polymers, but the surface of the coating is prone to foaming and different spots that affect the quality of the coating, and it has been roughened by electroplating and sprayed with UV oil When protecting the film, the substrate is easily corroded by strong oxidants and organic solvents, and the strength becomes low and brittle

Method used

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  • Electroplatable polycarbonate composition and preparation method thereof
  • Electroplatable polycarbonate composition and preparation method thereof
  • Electroplatable polycarbonate composition and preparation method thereof

Examples

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Effect test

Embodiment 1

[0039] Embodiment 1: The electroplatable polycarbonate composition of this embodiment includes the following components in parts by mass:

[0040]

[0041]

[0042] The method for preparing the above-mentioned polycarbonate composition comprises the following steps:

[0043] Reduce meshing blocks in the screw combined melting section of the twin-screw extruder, add ZME toothed screw elements in the mixing and homogenizing section, and combine the twin-screw extruder into a low-shear high-dispersion screw;

[0044] Stir the above components evenly to prepare a mixture, put the mixture into the above-mentioned adjusted twin-screw extruder, heat and melt it at 290°C and a rotation speed of 400r / min, and make the mixture blend and mold Chemicalization, shearing dispersion, extruding and granulating under vacuum pressure of -0.04Mpa, drawing a strip, cooling in a water tank, dehydrating, and granulating to obtain a polycarbonate composition that can be electroplated.

Embodiment 2

[0045] Embodiment 2: The polycarbonate composition that can be electroplated in this embodiment includes the following components in parts by mass: .

[0046]

[0047] The method for preparing the above-mentioned flame-retardant polycarbonate composition is as follows:

[0048] Reduce meshing blocks in the screw combined melting section of the twin-screw extruder, do not use reverse thread elements in the mixing and homogenizing section, and combine the twin-screw extruder into a low-shear high-dispersion screw;

[0049] Stir the above components evenly to prepare a mixture, put the mixture into the above-mentioned adjusted twin-screw extruder, heat and melt at 220°C and a rotation speed of 800r / min, and blend the mixture Plasticizing, shearing and dispersing, extruding and granulating at a vacuum pressure of -0.04Mpa, drawing a strip, cooling in a water tank, dehydrating, and dicing to obtain a polycarbonate composition that can be electroplated.

[0050] The polycarbonat...

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Abstract

The invention provides an electroplatable polycarbonate composition and a preparation method thereof. The polycarbonate composition is mainly prepared from the following raw materials in parts by mass: 20-85 parts of polycarbonate resin, 10-80 parts of organosilicone / polycarbonate copolymer, 0.2-10 parts of ethylene / methyl acrylate copolymer, 0.3-10 parts of styrene / maleic anhydride-grafted rubber polymer and 0.2-2 parts of a hyperdispersant. The polycarbonate composition provided by the invention is good in ultralow-temperature cracking resistance, electroplating corrosion cracking resistance and embedded steel sheet stress cracking resistance; an electroplated layer is high in binding force; plated pieces are good in quality.

Description

technical field [0001] The invention relates to the technical field of engineering plastics, in particular to an electroplatable polycarbonate composition and a preparation method thereof. Background technique [0002] Polycarbonate (English name Polycarbonate, referred to as PC), is a colorless and transparent amorphous thermoplastic polymer material. It has high strength, high toughness, high heat resistance, excellent electrical insulation, elongation, dimensional stability and chemical corrosion resistance; it is also self-extinguishing, easy to strengthen, flame retardant, non-toxic, hygienic, easy to color, Excellent properties such as shock resistance, so the amount used in engineering plastics ranks second only to polyamide (PA). It is widely used in glazing industry, lighting in automobile industry, instrument panel system, sockets and shells in electrical and electronic industry, hollow sun panels in building materials, optical discs and drinking water containers ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L23/08C08L51/04C08L67/00C08L71/00C08L23/00C08L33/08B29C47/58B29C48/50
CPCC08L69/00C08L2205/02C08L2205/035C08L23/0869C08L51/04C08L67/00C08K5/103C08L71/00C08L23/00C08L33/08
Inventor 卢其勇赖华林邓冬颜
Owner SHENZHEN HALCYON NEW MATERIALS
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