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Chemical-resistant polycarbonate and preparation method thereof
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A technology of polycarbonate and chemical resistance, applied in the field of chemical-resistant polycarbonate and its preparation, can solve the problems of poor mechanical properties, high production cost, and poor transparency of chemical-resistant polycarbonate, and achieve chemical resistance characterization method Simple and fast chemical resistance, the effect of improving chemical resistance
Active Publication Date: 2021-10-22
四川泸天化创新研究院有限公司
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Problems solved by technology
[0005] Aiming at the problems of poor mechanical properties, poor heat resistance, poor transparency and high production cost of the above-mentioned chemical-resistant polycarbonate, the present invention provides a chemical-resistant polycarbonate , the purpose of which is to improve the chemical resistance of ordinary polycarbonate resin while maintaining its original mechanical properties, thermal properties and transparency, so as to improve the application range of polycarbonate in film, electronic appliances and medical industries
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[0036] The second embodiment of the present invention provides a method for preparing chemically resistant polycarbonate, comprising the following steps: mixing and stirring polycarbonate, lubricant and antioxidant for 1-3 minutes to obtain a mixture; and mixing The material is melted, blended and extruded by a twin-screw extruder, and then dragged and pelletized to obtain chemically resistant polycarbonate. Wherein, the temperature of the extruder is 260-300°C.
[0037] The third embodiment of the present invention provides an application of a chemically resistant polycarbonate, which can be used in film, electronic appliances and medical industries.
[0038] In the fourth embodiment of the present invention, a chemical-resistant polycarbonate chemical resistance characterization method is provided, comprising the following steps: processing the chemical-resistant polycarbonate into a sample 1 of 60mm×60mm×2mm; placing the sample 1 in a solvent After soaking for 10 minutes, ...
Embodiment 1
[0041] Polycarbonate resin (MI=8 g / 10min): 99.8 parts;
[0045] ① Weigh each component according to the weight ratio, and mix the weighed polycarbonate, lubricant and antioxidant in a high-speed mixer for 1 minute to obtain a mixture;
[0046] ②The mixture is melted, blended and extruded by a twin-screw extruder, and then pulled and pelletized to obtain chemically resistant polycarbonate.
[0047] The temperature of the extruder is 280-300°C.
Embodiment 2
[0049] Polycarbonate resin (MI=10 g / 10min): 99.2 parts;
[0051] Antioxidant: 0.1 part of 1010, 0.1 part of 168.
[0052] The preparation method is:
[0053] ① Weigh each component according to the weight ratio, and mix the weighed polycarbonate, lubricant and antioxidant in a high-speed mixer for 2 minutes to obtain a mixture;
[0054] ②The mixture is melted, blended and extruded by a twin-screw extruder, and then pulled and pelletized to obtain chemically resistant polycarbonate.
[0055] The temperature of the extruder is 260-300°C.
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Abstract
The invention relates to the field of polycarbonate, and discloses chemical-resistant polycarbonate and a preparation method thereof. The material comprises the following components in parts by weight: 98.7-99.8 parts of polycarbonate resin, 0.1-1 part of a lubricant and 0.1-0.3 part of an antioxidant. According to the chemical-resistant polycarbonate provided by the invention, the lubricantmontan wax is added into the polycarbonate resin, so that the chemical resistance of the polycarbonate is greatly improved. Compared with the prior art, the composition is simple, the chemical resistance of the polycarbonate is improved, and the original light transmission, mechanical property and thermal property of the polycarbonate are maintained at the same time. The chemical-resistant polycarbonate provided by the invention is simple in preparation process, low in price and high in practicability, not only can meet the application requirements of common polycarbonate resin in the aspects of films, plates, modified materials and the like, but also can be applicable to the fields of medical instruments, electronic appliances and automobiles needing surface spraying and solvent washing.
Description
technical field [0001] The invention relates to the technical field of polycarbonate, in particular to a chemical-resistant polycarbonate and a preparation method thereof. Background technique [0002] Polycarbonate is a kind of thermoplasticengineering plastic, which has the characteristics of low water absorption, light weight, high transparency, good heat resistance, good cold resistance and good flame retardancy and insulation, and has excellent impact resistance and creep resistance. It is widely used in optics, medical equipment, electronic appliances, packaging materials, automotive industry and aerospace and other fields. [0003] Due to its high transparency, high gloss and high impact resistance, polycarbonate is the material of choice for films, mobile phone casings and medical devices, etc., but due to its poor chemical resistance, it is prone to stress cracking when the surface is sprayed and washed with alcohol The problem. To solve this problem, CN109776783...
Claims
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Application Information
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