Termite-proof low-temprature-resisting and flame-retarding PC/PE (Polycarbonate/Polyethylene) alloy material and preparation method thereof
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An alloy material and termite prevention technology, applied in the field of alloy materials, can solve the problems of poor fluidity and low temperature resistance of PC resin, and achieve the effects of reducing volatilization loss, simple operation and prolonging service life
Active Publication Date: 2018-06-01
QINGDAO HAIER NEW MATERIAL R&D CO LTD
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[0006] The high-density polyethylene resin selected in the present invention as a component of the alloy material not only improves the defects of poor fluidity and low temperature resistance of the PC resin, but also better disperses the effective anti-termite components on the PC base as a carrier. materials, give full play to the role of anti-termites
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Embodiment 1
[0039] The preparation of anti-termite masterbatch specifically comprises the following steps:
[0040] First, add 0.2 parts of initiator DCP, 2 parts of maleic anhydride, 5 parts of bifenthrin and 10 parts of methyl carbamate in a closed stirring pot for pre-mixing at a low speed for 1 minute, then add 82.4 parts of high-density polyethylene HDPE, Stir and mix at high speed for 2 minutes, then add to a twin-screw screw extruder for melting and reaction granulation. The temperature of each section of the twin-screw extruder is 160°C, 180°C, 200°C, 220°C, 220°C, 200°C, 200°C, 180°C, 180°C, the die head temperature is 160°C, and the screw speed is 50r / min . The prepared anti-termite masterbatch is packaged in an aluminum foil packaging bag and vacuum-sealed in time for future use.
Embodiment 2-8
[0042] Weigh a certain amount of PC resin, high-density polyethylene HDPE, low-temperature synergist, phosphorus flame retardant, flame retardant synergist, anti-dripping agent, anti-termite masterbatch, antioxidant and add it to the high-speed mixer In the middle, the mixed material after stirring for 3 minutes is added from the main feeding port of the twin-screw extruder; the anti-termite masterbatch is added from the ninth zone by using a weight loss scale, and melted and granulated by the twin-screw extruder. In the twin-screw extruder, the temperature of each section from the feed section to the machine head is 200°C, 220°C, 230°C, 230°C, 245°C, 245°C, 235°C, 235°C, 230°C, 230°C, 230°C °C, 230 °C, the die temperature is 230 °C. The prepared anti-termite, low-temperature and flame-retardant PC / PE alloy pellets were placed in a vacuum oven at 80°C for 3 hours, and then the test specimens were prepared by injection molding machine.
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Abstract
The invention discloses a termite-proof low-temprature-resisting and flame-retarding PC/PE (Polycarbonate/Polyethylene) alloy material and a preparation method thereof. The termite-proof low-temprature-resisting and flame-retarding PC/PE alloy material is prepared from the following components in parts by weight: 50 to 80 parts of PC resin, 5 to 20 parts of PE resin, 3 to 8 parts of a low-temperature synergist, 10 to 20 parts of a phosphorus-based flame retardant, 0.2 to 2.0 parts of a flame-retarding synergist, 0.4 to 1.0 part of an anti-dropping agent, 1 to 10 parts of termite-proof master batch and 0.4 to 1.0 part of an antioxidant. In a PC/PE alloy system, the PE resin is distributed in the PC resin in a dispersed phase manner; active groups of the PE resin and the PC resin are subjected to grafting reaction in a melting and blending process of the low-temperature synergist, so that a two-phase interface of PC and PE is improved, and the low-temperature toughening effect of the PEresin is sufficiently expressed; the phosphorus-based flame retardant is cooperatively matched with the flame-retarding synergist, so that flame-retarding requirements of large-size thin-wall parts are met. According to the termite-proof low-temprature-resisting and flame-retarding PC/PE alloy material, the termite-proof master batch is prepared firstly and then is used for synthesizing the PC/PEalloy material, so that the obtained termite-proof low-temprature-resisting and flame-retarding PC/PE alloy material keeps relatively good low-temperature-resisting and flame-retarding properties; meanwhile, the termite-proof low-temprature-resisting and flame-retarding PC/PE alloy material also has a long-effect termite-proof effect and is applicable to optical fibers and cable wiring boxes.
Description
technical field [0001] The invention belongs to the technical field of alloy materials, and relates to a termite-proof, low-temperature-resistant and flame-retardant PC / PE alloy material and a preparation method thereof, in particular to a termite-proof, low-temperature-resistant and flame-retardant PC / PE alloy material for junction boxes such as optical fibers and cables, and its preparation method. Background technique [0002] Polycarbonate (PC) material has the characteristics of excellent impact resistance, creep resistance, good dimensional stability, heat resistance, and non-toxicity, and has become an engineering plastic with the fastest growing application volume in recent years. As a general-purpose plastic, a high-density polyethylene copolymer (HDPE) not only has outstanding impact resistance, heat resistance, and low temperature resistance, but also has environmental stress cracking resistance, electrical properties, and processability. [0003] At present, the...
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