Low resistivity composite electromagnetic shielding plastic
A composite electromagnetic and plastic technology, applied in the field of modified plastics, can solve the problems of high electrical resistance, poor corrosion resistance, decreased mechanical properties, etc., and achieve the effects of excellent comprehensive performance, broad market prospects, and reduced resistivity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0018] A low-resistance composite electromagnetic shielding plastic, comprising the following components in parts by weight: 60 parts of matrix resin, 10 parts of carbon black, 10 parts of pitch-based chopped graphite fiber, 5 parts of surface treatment agent, 20 parts of toughening modifier, 3 parts of oxygen agent. Wherein, the matrix resin is one of polypropylene, polyethylene, acrylonitrile-butadiene-styrene plastic or polyethylene terephthalate; the surface treatment agent is a silane coupling agent; the The toughening modifier is a thermoplastic elastomer.
[0019] The pitch-based chopped graphite fiber is an active pitch-based chopped graphite fiber with a length of 1-3mm, and its activation treatment method is:
[0020] (1) Oxidation treatment: place pitch-based chopped graphite fibers in strong nitric acid with a mass concentration of 80%, and oxidize them at a temperature of 50-60°C for 2-4 hours;
[0021] (2) Cleaning and drying: Leach out the pitch-based chopped ...
Embodiment 2
[0025] A low-resistance composite electromagnetic shielding plastic, comprising the following components in parts by weight: 80 parts of matrix resin, 30 parts of carbon black, 20 parts of pitch-based chopped graphite fiber, 10 parts of surface treatment agent, 30 parts of toughening modifier, anti- 8 parts of oxygen agent. Wherein, the matrix resin is a mixture of two types of polypropylene, polyethylene, acrylonitrile-butadiene-styrene plastic, and polyethylene terephthalate; the surface treatment agent is titanate coupling agent. Others are the same as embodiment 1.
[0026] The carbon black and the pitch-based chopped graphite fiber of the present invention produce permeation effect in the matrix resin on the one hand, and form a conductive metal mesh on the other hand, thereby effectively reducing the composite resistance of the material and improving its electromagnetic shielding performance.
[0027] The above-mentioned low-resistance composite electromagnetic shieldi...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More