A low temperature impact resistant glass fiber reinforced polypropylene composite material and its preparation and application

A technology of composite materials and polypropylene, applied in the field of vehicle underbody protection panels, can solve the problems of low output and achieve the effect of improving reinforcement, low cost, and increasing the degree of dispersion

Active Publication Date: 2015-11-18
中广核俊尔(上海)新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Long glass fiber reinforced polypropylene materials require relatively special equipment to produce, because glass fiber melt impregnation is required to disperse well and achieve proper performance, so the output is not high

Method used

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  • A low temperature impact resistant glass fiber reinforced polypropylene composite material and its preparation and application
  • A low temperature impact resistant glass fiber reinforced polypropylene composite material and its preparation and application
  • A low temperature impact resistant glass fiber reinforced polypropylene composite material and its preparation and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] As shown in Table 1, weigh Qilu Petrochemical Copolymer SP179 (notched impact strength ≥ 45kJ / m 2 ), 68.5 parts by weight, 5 parts by weight of multi-branched polyethylene LLDPE7042 (Yangzi Petrochemical), 5 parts by weight of maleic anhydride grafted polypropylene compatibilizer CMG5001 (MAH grafting rate ≥ 1%) of Shanghai Rizhisheng Company, no Alkali continuous long glass fiber 988A (glass fiber diameter 9-13 μm) 21 parts by weight, antioxidant 1010 (tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester) And antioxidant 168 (tris [2,4-di-tert-butylphenyl] phosphite) 0.1 parts by weight each, processing aid calcium stearate 0.3 parts by weight, mix each component except glass fiber evenly Finally, put it into the hopper of the extruder, and melt and blend through the twin-screw extruder. The continuous long glass fiber is added from the exhaust port or the short fiber is added from the side feeding port. By adjusting the main engine speed, ...

Embodiment 2

[0050] As shown in Table 1, weigh Qilu Petrochemical Copolymer SP179 (notched impact strength ≥ 45kJ / m 2 ) 56.5 parts by weight, multi-branched polyethylene LLDPE7042 (Yangzi Petrochemical) 7 parts by weight, Rizhisheng maleic anhydride grafted polypropylene compatibilizer CMG5001 (MAH grafting rate ≥ 1%) 5 parts by weight, non-alkali continuous long 31 parts by weight of glass fiber 988A (diameter of glass fiber is 9-13 μm), 0.1 parts by weight of each of antioxidant 1010 and 168, 0.3 parts by weight of processing aid calcium stearate, after mixing all components except glass fiber evenly , into the hopper of the extruder, melted and blended through the twin-screw extruder, the continuous long glass fiber is added from the exhaust port or the short fiber is added from the side feed port, by adjusting the speed of the main engine, the main feed and the long glass fiber root The number or side feeding speed can adjust the glass fiber content; extruded strands are cooled, air-dr...

Embodiment 3

[0053] As shown in Table 1, weigh Qilu Petrochemical Copolymer SP179 (notched impact strength ≥ 45kJ / m 2 ) 43.5 parts by weight, multi-branched polyethylene LLDPE7042 (Yangzi Petrochemical) 10 parts by weight, Rizhisheng maleic anhydride grafted polypropylene compatibilizer CMG5001 (MAH grafting rate ≥ 1%) 5 parts by weight, non-alkali continuous long 41 parts by weight of glass fiber 988A (diameter of glass fiber is 9-13 μm), 0.1 parts by weight of each of antioxidant 1010 and 168, 0.3 parts by weight of processing aid calcium stearate, after mixing all components except glass fiber evenly , into the hopper of the extruder, melted and blended through the twin-screw extruder, the continuous long glass fiber is added from the exhaust port or the short fiber is added from the side feed port, by adjusting the speed of the main engine, the main feed and the long glass fiber root The number or side feeding speed can adjust the glass fiber content; extruded strands are cooled, air-d...

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Abstract

The invention provides a low temperature impact resisting glass fiber reinforced polypropylene composite material as well as preparation and application thereof. The composite material provided by the invention comprises 40-90 parts of co-polypropylene, 2-10 parts of compatilizer, 5-45 parts of glass fiber and 2-10 parts of highly branched chain polyethylene in parts by weight. According to the composite material based on high impact co-polypropylene as a base material and highly branched chain polyethylene with hexane and octylene as branched chains as a crack propagation inhibitor, the good yield is ensured by a common twin screw device, so that the cost is lower. The composite material has better low temperature impact resistance.

Description

technical field [0001] The invention relates to a car bottom protective plate, in particular to a low-temperature impact-resistant glass fiber reinforced polypropylene composite material and its application in a car bottom protective plate. Background technique [0002] The bottom protection plate is a bottom protection device designed according to various models. Firstly, it prevents the engine from being wrapped in mud and causes poor heat dissipation of the engine. Damage to the engine and other components can also help the lower part of the engine to form a stable airflow, reduce the noise generated during high-speed operation, and save fuel. Generally, the car bottom guard is divided into plastic and metal according to different materials. The price of the plastic bottom guard is relatively cheap, the production process is simple and does not require a large amount of capital and high-value equipment investment, and the entry threshold for producing this kind of guard ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/16C08L23/06C08L51/06C08L23/08C08K7/14
Inventor 沈岳新黄志杰左绍文彭楠杨仓先
Owner 中广核俊尔(上海)新材料有限公司
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