A kind of high cti value, high gwit value environmental protection flame retardant glass fiber reinforced pp/ppo alloy material and preparation method thereof
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An alloy material and an environmentally friendly technology are applied in the field of environmentally friendly flame retardant glass fiber reinforced PP/PPO alloy materials and their preparation to achieve the effects of improving smoothness, improving processing fluidity and preventing decomposition
Inactive Publication Date: 2015-08-05
SHANGHAI SUNNY
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[0008] However, there is no report on the environmentally friendly flame-retardant glass fiber reinforced PP / PPO alloy material with high CTI value and high GWIT value and excellent comprehensive performance.
Method used
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Embodiment 1
[0060] Example 1 Preparation of PP / PPO alloy material of the present invention (1)
[0061] Weigh raw materials by weight percentage: PP 25%, PPO (intrinsic viscosity: 1.0dl / g) 25.1%, compound flame retardant 12%, antimony trioxide 4%, alkali-free glass treated with silane coupling agent Fiber 30%, maleic anhydride grafted SEBS 3%, antioxidant 1330 0.4%, iron oxide 0.5%; put the weighed raw materials into a high mixer and mix for 5 minutes, and discharge; extrude with a twin-screw extruder For granulation, the processing temperature is 220-240°C, the screw speed is 35HZ, and the specific processing conditions are shown in the table below.
[0062]
Embodiment 2
[0063] Example 2 Preparation of PP / PPO alloy material of the present invention (2)
[0064] Weigh raw materials by weight percentage: PP 25%, PPO (intrinsic viscosity: 1.0dl / g) 23%, compound flame retardant 12%, antimony trioxide 4%, alkali-free glass treated with silane coupling agent Fiber 30%, maleic anhydride grafted SEBS 5%, antioxidant 1330 0.4%, iron oxide 0.6%; put the weighed raw materials into a high mixer and mix for 2 minutes, and discharge; extrude with a twin-screw extruder For granulation, the processing temperature is 220-240°C, the screw speed is 35HZ, and the specific processing conditions are shown in the table below.
[0065]
Embodiment 3
[0066] Example 3 Preparation of PP / PPO alloy material of the present invention (3)
[0067] Weigh raw materials by weight percentage: PP 23%, PPO (intrinsic viscosity: 1.0dl / g) 22%, compound flame retardant 20%, antimony trioxide 4.3%, alkali-free glass treated with silane coupling agent Fiber 20%, maleic anhydride grafted SEBS 10%, antioxidant 1330 0.1%, iron oxide 0.6%; put the weighed raw materials into a high mixer and mix for 2 minutes, and discharge; extrude with a twin-screw extruder For granulation, the processing temperature is 220-240°C, the screw speed is 30HZ, and the specific processing conditions are shown in the table below.
[0068]
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Abstract
The invention provides a high-CTI (Creepage Tracking Index) high-GWIT (Glow-Wire Ignition Temperature) environmental-friendly flame-retardant glass fiber reinforced PP / PPO (Polypropylene / Polyphenylene Oxide) alloy material which is prepared from the following raw materials in percentage by weight: 23%-41% of PP, 22%-41% of PPO, 6%-20% of compound flame retardant, 3%-15% of antimony trioxide, 20%-30% of glass fibers, 2%-10% of compatilizer, 0.1%-1% of antioxidant and 0.1%-1% of oxide, wherein the compound flame retardant contains the following materials in percentage by weight: 50% of BPS (Brominated Polystyrene), 25% of magnesium hypophosphite and 25% of talcum powder. The invention also provides a preparation method of the high-CTI high-GWIT environmental-friendly flame-retardant glass fiber reinforced PP / PPO alloy material. The high-CTI value high-GWIT value environmental-friendly flame-retardant glass fiber reinforced PP / PPO alloy material provided by the invention has the advantages that the GWIT value is increased by 50-100 DEG C by adoption of a novel flame-retardant compounding system, so that the material can pass 850 DEG C glow-wire test; the GWIT value is also obviously increased through the addition of the glass fibers; in addiiton, impact property and ageing-resistant property are improved, processing fluidity and smoothness are increased and friction factor is lowered.
Description
Technical field [0001] The present invention involves an environmentally friendly flame retardant glass fiber enhancement PP / PPO alloy material and its preparation methods. Specifically, it is a high CTI value, high GWIT value environmental flame retardant glass fiber enhancement PP / PPO alloy material and their preparation methodsEssence Background technique [0002] PPO, a Chinese name polyzhenylene, is one of the world's five major general engineering plastics. It has the advantages of high rigidity, high heat resistance, difficulty, high strength, excellent electrical performance, abrasion resistance, non -toxic, pollution resistance and other.In addition, PPO is one of the varieties with the least consumption of engineering plastic intermediaries and the smallest dielectric loss. It is almost not affected by temperature and humidity. It can be used in the field of low, medium and high -frequency electric fields.The temperature is -170 ° C.PPO's relative density (PPO / PA simila...
Claims
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