Polypropylene composite material and preparation method thereof

A technology for compounding polypropylene and polypropylene resin, applied in the field of preparing the compound polypropylene material, can solve the problems of high raw material and manufacturing cost, low raw material and manufacturing cost, low mechanical properties, etc., and achieves low cost and reduced cost. Effect

Active Publication Date: 2009-03-11
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects that the mechanical properties of the two kinds of glass fiber reinforced polypropylene materials in the above-mentioned prior art are too low or the raw materials and manufacturing costs are high, and provide a kind of mechanical properties between the two and the raw materials and manufacturing Composite polypropylene material with low cost and preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0018] According to the preparation method provided by the present invention, preferably, based on 100 parts by weight of the polypropylene resin, the amount of the compatibilizer is 1-10 parts by weight, and the amount of the coupling agent is 0.1-2 parts by weight parts, the amount of the lubricant is 0.5-2 parts by weight, the amount of the filler is 0.1-30 parts by weight, the amount of the toughening agent is 0.1-15 parts by weight, the amount of the light stabilizer is 0.2-2 parts by weight.

[0019] According to the composite polypropylene material provided by the present invention, the compatibility of long glass fibers and polypropylene resin can be improved by using a compatibilizer, so that the long glass fiber and polypropylene resin can be melted and mixed better and more uniformly, thereby improving the composite Mechanical properties of polypropylene materials. The compatibilizer can be various compatibilizers known to those skilled in the art for better compat...

Embodiment 1

[0035] 2.5 kg of polypropylene resin (homopolypropylene with a melt flow index of 50 g / 10 min) was mixed with 19 g of 1098 and 168 antioxidants, 77 g of maleic anhydride grafted polypropylene (PP-g-MAH) and 15 Gram TAF (ethylene bis stearamide graft) was added to the high-speed mixer and mixed for 3 minutes.

[0036] Add the mixture to the feeding port of the twin-screw extruder, heat and melt it, and add 0.4 kg of E Alkali-free long glass fiber (Jushi glass fiber 988A), blended and extruded into pellets to obtain a composite polypropylene material. The length of the glass fiber measured by the test method described later is 0.6mm.

[0037] The temperature settings of the twin-screw extruder are as follows: the temperature of each zone is adjusted to 180°C, 190°C, 195°C, 200°C, 210°C, 205°C, and 200°C, the temperature of the head is adjusted to 210°C, and the speed of the main engine is 170 rpm , The feeding speed is 75 rpm.

Embodiment 2

[0039] 2.5 thousand polypropylene (homopolypropylene with a melt flow index of 20g / 10min) and 0.54 kg of wollastonite (800 mesh wollastonite in Xinyu, Jiangxi Province) treated with coupling agent KH570, 18 grams of 1098 and 168 Antioxidant, 107.14 g PP-g-MAH, 115.7 g ethylene-octene copolymer (POE), 10.71 g TAF (ethylene bis stearamide graft), 7.69 g EBS (ethylene bis stearamide) , 18 grams of UV531 (2-hydroxy-4-n-octyloxybenzophenone), added to a high-speed mixer and mixed for 2 minutes at high speed.

[0040] Then the mixture is added to the feeding port of the twin-screw extruder, heated and melted, and 0.6 kilograms of E-type alkali-free long-distance resin processed by the coupling agent are added from the glass fiber feeding port that is located near the vacuum hole of the second compression section of the screw rod. Glass fiber (jushi glass fiber 988A), blended and extruded into pellets to obtain a composite polypropylene material, the length of the glass fiber measure...

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Abstract

The invention discloses a composite polypropylene material. The composite polypropylene material contains polypropylene resin, glass fiber and an antioxidant, wherein the fiber length of the glass fiber is between 0.4 and 1 millimeter. The invention also discloses a method for preparing the composite polypropylene material. The mechanical properties of the composite polypropylene material such as the tensile strength, the impact strength, the bending strength, the flexural modulus and so on are between the mechanical properties of short glass fiber reinforced polypropylene material and the mechanical properties of long glass fiber reinforced polypropylene material, and the cost of raw materials and the manufacturing cost are low.

Description

technical field [0001] The invention relates to a composite polypropylene material and a preparation method of the composite polypropylene material. Background technique [0002] Polypropylene (PP) resin is a general-purpose thermoplastic with excellent comprehensive properties. The polypropylene resin has many advantages: rich source of raw materials, simple production process, low price, high commercial value; medium tensile strength and bending strength, easy to fill and modify , and the mechanical properties are greatly improved after modification; the heat-resistant temperature is high, and can be used at a temperature above 100°C; the fatigue resistance is excellent under repeated bending loads; the electrical insulation performance is excellent, and it is not affected by humidity; chemical resistance performance Good; almost insoluble in any solvent at room temperature, not affected by the corrosion of inorganic salt solution, inorganic acid and inorganic alkali. Due...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08J7/14B29C47/40C08K5/521
Inventor 李玉冰
Owner BYD CO LTD
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