A kind of high cti value, high gwit value environmental protection flame retardant glass fiber reinforced pp/pa612 alloy material and preparation method thereof
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A technology of PA612 and alloy materials, which is applied in the field of PP/PA612 alloy materials and its preparation, to achieve the effects of improving impact performance, reducing friction coefficient and improving slipperiness
Inactive Publication Date: 2015-09-09
SHANGHAI SUNNY
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However, there is no report on the environmentally friendly flame-retardant glass fiber reinforced PP / PA612 alloy material with high CTI value and high GWIT value and excellent comprehensive performance.
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Embodiment 1
[0058] Example 1 Preparation of PP / PA612 alloy material of the present invention (1)
[0059] Weigh raw materials by weight percentage: PP 25%, PA612 (intrinsic viscosity: 2.8dl / g) 25.1%, compound flame retardant 12%, antimony trioxide 4%, alkali-free glass treated with silane coupling agent Fiber 30%, maleic anhydride grafted PP 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.
[0060]
Embodiment 2
[0061] Example 2 Preparation of PP / PA612 alloy material of the present invention (2)
[0062] Weigh raw materials by weight percentage: PP 25%, PA612 (intrinsic viscosity: 2.8dl / g) 23%, compound flame retardant 12%, antimony trioxide 4%, alkali-free glass treated with silane coupling agent Fiber 30%, maleic anhydride grafted PP 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.
[0063]
Embodiment 3
[0064] Example 3 Preparation of PP / PA612 alloy material of the present invention (3)
[0065] Weigh raw materials by weight percentage: PP 23%, PA612 (intrinsic viscosity: 2.8dl / g) 22%, compound flame retardant 20%, antimony trioxide 4.3%, alkali-free glass treated with silane coupling agent Fiber 20%, maleic anhydride grafted PP 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.
[0066]
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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 / PA612 (Polypropylene / Polyamide 612) alloy material which is prepared from the following raw materials in percentage by weight: 23%-41% of PP, 22%-41% of PA612, 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 / PA612 alloy material. The high-CTI high-GWIT environmental-friendly flame-retardant glass fiber reinforced PP / PA612 alloy material provided by the invention has the advantages that the GWIT value is increased by 50-100 DEG C due to 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; moreover, and impact property and ageing-resistant property are improved, processing fluidity and smoothness are increased and friction factor is lowered.
Description
technical field [0001] The invention relates to a PP / PA612 alloy material and a preparation method thereof, in particular to an environmentally friendly flame-retardant glass fiber reinforced PP / PA612 alloy material with a high CTI value and a high GWIT value and a preparation method thereof. Background technique [0002] Nylon (Nylon), Chinese name polyamide, English name polyamide, referred to as PA, is the general term for thermoplastic resins containing repeated amide groups—[NHCO]—on the main chain of the molecule, and its naming is determined by the specific number of carbon atoms in the synthetic monomer , such as PA-6, PA-66, PA-1010, PA-610. PA has high crystallinity and obvious melting point; high surface hardness, wear resistance, small friction coefficient, self-lubrication and noise reduction; good low temperature performance and certain heat resistance (can be used below 100°C); non-toxic , Odorless, no mildew, self-extinguishing, good weather resistance, but ...
Claims
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