Flame-retardant glass fiber-reinforced HDPE/PA66 alloy material with high CTI value and high GWIT value
A technology of alloy materials and glass fiber, which is applied in the field of alloy materials, can solve the problems of unsuitable electricity use environment, low CTI value and GWIT value, etc., achieve high tracking index, improve oxidation resistance, and prevent decomposition effects
Inactive Publication Date: 2013-04-03
SHANGHAI SUNNY
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The invention discloses a flame-retardant glass fiber-reinforced HDPE/PA66 alloy material with a high CTI value and a high GWIT value. The alloy material comprises the following components: by weight, 23 to 41% of HDPE, 22 to 41% of PA66, 6 to 20% of a compound fire retardant, 3 to 15% of antimonony oxide, 20 to 30% of a glass fiber, 2 to 10% of a compatilizer, 0.1 to 1% of an anti-oxidant and 0.1 to 1% of an oxide. The invention also relates to a preparation method for the alloy material, and the method comprises the following steps: weighing the components in proportion, adding the weighed components into a high-speed mixer for mixing for 2 to 5 min, then carrying out discharging and finally carrying out extrusion granulation in a twin-screw extruder, wherein processing temperature is 220 to 240 DEG C and screw revolution is 30 to 40 Hz. Compared with the prior art, the alloy material provided by the invention has the advantages of a high CTI value, low precipitation performance, etc.
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