PC (Polycarbonate) composition resistant to chemical corrosion and preparation method thereof
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A technology of chemical corrosion resistance and composition, which is applied in the field of chemical corrosion resistant PC composition and its preparation, can solve the problems of increasing cost, affecting the mechanical properties of materials, and the effect is not obvious, and achieve the effect of improving chemical corrosion resistance
Active Publication Date: 2017-10-13
SHANGHAI KUMHO SUNNY PLASTICS
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Problems solved by technology
[0003] Usually, people improve the corrosion resistance of plastic parts through painting and other post-processing techniques, but further post-processing brings increased costs
Some patents also disclose adding additives such as silicone oil to improve the chemical resistance of the matrix material, but the effect is not obvious, and the addition of too many small molecule additives will also affect the mechanical properties of the material itself
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Embodiment 1
[0035] (1) Take by weight 50 parts of PC, 10 parts of fluorosilicone resin, 0.1 part of organosiloxane, 0.1 part of antioxidant, and 0.1 part of lubricant;
[0036] (2) Feed the raw materials from the feed port, melt and extrude at 260-330°C, the screw extruder speed is 350rpm, the pressure is 3MPa, after melt extrusion, granulation to obtain the product, the diameter of the extruder screw It is 35mm and the aspect ratio is 32.
Embodiment 2
[0038] (1) Take by weight 90 parts of PC, 3 parts of fluorosilicone resin, 0.5 part of organosiloxane, 0.5 part of antioxidant, and 0.5 part of lubricant;
[0039] (2) Feed the raw materials from the feed port, melt and extrude at 260-330°C, the screw extruder speed is 350rpm, the pressure is 3MPa, after melt extrusion, granulation to obtain the product, the diameter of the extruder screw It is 45mm and the aspect ratio is 42.
Embodiment 3
[0041] (1) Take by weight 70 parts of PC, 7 parts of fluorosilicone resin, 3 parts of organosiloxane, 0.1 part of antioxidant, and 1 part of lubricant;
[0042] (2) Feed the raw materials from the feed port, melt and extrude at 260-330°C, the screw extruder speed is 350rpm, the pressure is 3MPa, after melt extrusion, granulation to obtain the product, the diameter of the extruder screw It is 45mm and the aspect ratio is 42.
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Abstract
The invention discloses a PC (Polycarbonate) composition resistant to chemical corrosion and a preparation method thereof. The PC composition is prepared from the following ingredients in parts by weight: 50-90 parts of bisphenol A type PC, 30-50 parts of fluoro-silicon resin, 0.1-3 parts of organosiloxane (PDMS), 0.1-1.5 parts of antioxidant and 0.1-1 part of lubricant. Compared with the prior art, the PC composition provided by the invention has the advantages that by using excellent corrosion resistance of fluorine and synergistic corrosion prevention and compatibility effects of organosilicone, the resistance to chemical corrosion of PC compounds are improved, and the effect of having efficient corrosion prevention without spraying anticorrosive paint is achieved.
Description
technical field [0001] The invention belongs to the field of polymer material processing, and in particular relates to a chemical corrosion-resistant PC composition and a preparation method thereof. Background technique [0002] Corrosion, especially chemical corrosion, is an important factor for the failure of excellent properties of materials. For example, polycarbonate materials have excellent properties of heat resistance, transparency, and impact resistance, but their resistance to chemical agents is not high. Products made of polycarbonate materials are widely used in mobile phone cases, refrigerator and TV cases, parts, automobiles and other fields. They will inevitably come into contact with various chemicals such as gasoline and hand cream. restricted. [0003] Usually, people improve the corrosion resistance of plastic parts through painting and other post-processing techniques, but further post-processing brings increased costs. Some patents also disclose addin...
Claims
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Application Information
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