Weather-resistant and low-temperature-resistant plastic packaging material
A technology of plastic packaging and low temperature resistance, which is applied in the field of plastic packaging materials, can solve the problems of polycarbonate not being resistant to low temperature and weathering, and achieve the effects of low temperature resistance and weather resistance, good weather resistance, and high low temperature impact
Inactive Publication Date: 2019-04-02
桐城市鸿江包装有限公司
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Problems solved by technology
[0003] The purpose of the present invention is to provide a weather-resistant and low-temperature resistant plastic packaging material, which solves the problem that the existing plastic packaging material polycarbonate is not resistant to low temperature and weather resistance, and does not crack when used in a low temperature environment for a long time, meeting the use requirements of extreme environments
Method used
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Embodiment 1
[0016] 100 parts of polycarbonate resin with a melt index of 10-15g / 10min, 10 parts of MBS toughening agent, 1.2 parts of benzotriazole UV absorber, 2 parts of magnesium hydroxide, 0.2 part of phosphite antioxidant, silicone 0.3 parts of lubricants.
Embodiment 2
[0018] 80 parts of polycarbonate resin with a melt index of 10-15g / 10min, 8 parts of silicon-acrylic toughening agent, 2 parts of MBS toughening agent, 1.1 parts of weather resistance agent, 1.5 parts of magnesium hydroxide, 0.2 parts of phosphite antioxidant , 0.2 parts of silicone lubricants.
Embodiment 3
[0020] Melt index 10-15g / 10min 98 parts of polycarbonate resin, 8 parts of silicone-acrylic toughening agent, 1.1 parts of weather resistance agent, 1.5 parts of magnesium hydroxide, 0.3 parts of phosphite antioxidant, 0.1 part of silicone lubricant share.
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Abstract
The invention relates to a weather-resistant and low-temperature-resistant plastic packaging material. The preparation method comprises: weighing 80-100 parts by mass of a polycarbonate resin, 3-12 parts by mass of a toughening agent, 0.1-1.2 parts by mass of a weather-resistant agent, 1-2 parts by mass of a flame retardant, 0.1-0.3 part by mass of an antioxidant, and 0.1-0.3 part by mass of a lubricant according to a certain weight ratio, uniformly blending by a high mixer, carrying out melt extrusion by a twin-screw extruder, cooling, pelletizing, and drying to prepare the product, wherein the polycarbonate resin has a melt index of 10-15 g / 10 min under a condition of 300 DEG C / 1.2 kg, the temperature of the screw cylinder of the twin-screw extruder is set at 240-285 DEG C, and the melttemperature is 250-280 DEG C.
Description
technical field [0001] The invention relates to the technical field of plastic packaging materials, in particular to a weather-resistant and low-temperature resistant plastic packaging material. Background technique [0002] Plastic packaging materials mainly include polycarbonate, which has become a widely used thermoplastic material due to its comprehensive properties of high light transmittance, high fluidity, high impact strength and easy molding and processing. Conventional polycarbonate is sensitive to notches, and brittle fractures are prone to occur if there are defects. Especially in low temperature environments, stress cracking often occurs due to its large stress. The existing plastic packaging materials polymerize polycarbonate and silicon to prepare silicon-containing polycarbonate. Although this material solves the problem of poor low-temperature impact to a certain extent, the price of silicon-containing polycarbonate on the market is high; At the same time, ...
Claims
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IPC IPC(8): C08L69/00C08L51/04C08L33/04C08L23/08C08K5/3475C08K3/22
CPCC08K2003/2224C08K2003/2227C08L69/00C08L2201/08C08L2205/03C08L51/04C08K5/3475C08K3/22C08L43/04C08L23/0869
Inventor 李涛
Owner 桐城市鸿江包装有限公司
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