Long glass fiber reinforced polypropylene compound and preparation method thereof

A long glass fiber and polypropylene technology, applied in the field of polymer materials and their molding processing, can solve the problems of high price of scratch resistance additives, large loss of scratch resistance performance, high cost of materials, etc., to reduce the size of parts Changes and deformation problems, improved scratch resistance, and improved service life

Inactive Publication Date: 2015-04-08
TIANJIN KINGFA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, anti-scratch strip materials require high content of talcum powder to meet the requirement of low linear expansion coefficient. High content of talc powder will greatly damage the scratch resistance of the material, so the amount of scratch resistance additives must be increased to meet the requirements. However, scratch-resistant additives are expensive, resulting in high material costs, and there is a risk of stickiness by photolysis

Method used

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  • Long glass fiber reinforced polypropylene compound and preparation method thereof
  • Long glass fiber reinforced polypropylene compound and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The first step: 35 kg of polypropylene PP S700 (melt flow rate of 10g / 10min), 51 kg of polypropylene PP BX3920 (melt flow rate of 100g / 10min), 0.2 kg of phenolic heat stabilizer Irganox 1010, 0.3 kg Phosphite ester heat stabilizer Irganox168, 0.2 kg hindered amine light stabilizer 770, 0.3 kg polypropylene special nucleating agent TMP-5, 1 kg stearic acid complex ester processing aid ethylene bis-stearic acid amide EBS , 2 kg of maleic anhydride grafted polypropylene CA-100 is plasticized by a single screw extruder with a length-to-diameter ratio of 25:1 (rotating speed is 200r / min, and the temperature of each zone from the feeding section to the die is set to 140℃, 210°C, 245°C, 270°C, 290°C) and then transported through the LFT special die to the high temperature melt infiltration tank in the LFT special high temperature melt infiltration die. The temperature in the LFT special high temperature melt infiltration die is 290 ℃;

[0027] Step 2: Pull 10 kg of long glass fi...

Embodiment 2

[0032] The first step: 71 kg of polypropylene PP YPJ3860 (melt flow rate is 60g / 10min), 0.5 kg of phenolic heat stabilizer 1010, 0.5 kg of phosphite ester heat stabilizer 627A, 0.6 kg of hindered amine light stabilizer 622, 0.4 kg of polypropylene special nucleating agent HPN-20E, 1 kg of stearic acid complex ester processing aid ethylene bisstearic acid amide EBS, 5 kg of maleic anhydride grafted polypropylene CA-100 passed 25:1 The single-screw extruder is plasticized (rotating speed is 220r / min, and the temperature of each zone from the feeding section to the head is set to 140℃, 220℃, 260℃, 280℃, 300℃) and then transported to the LFT dedicated die through the LFT dedicated die In the high temperature melt infiltration tank in the high temperature melt infiltration die, the temperature in the LFT special high temperature melt infiltration die is 300℃;

[0033] The second step: the 21 kilograms of long glass fiber Tufrov 4599 produced by PPG company is drawn into the high-tempe...

Embodiment 3

[0038] The first step: 42 kg of polypropylene PP EP540V (melt flow rate is 100g / 10min), 1 kg of phenolic heat stabilizer 1010, 1 kg of thioester heat stabilizer 412S, 2 kg of hindered amine light stabilizer 770, 2 kg of polypropylene special nucleating agent Millad 3988, 2 kg of stearic acid complex ester processing aid ethylene bis-stearic acid amide EBS, 10 kg of maleic anhydride grafted polypropylene Bondyram 1001CN through 25:1 single screw extrusion After being plasticized (rotation speed is 260r / min, the temperature of each zone from the feeding section to the machine head is set to 140℃, 260℃, 280℃, 310℃, 330℃) and then transported to the LFT special high temperature melt through the LFT special die In the high temperature melt infiltration tank in the infiltration die, the temperature in the LFT special high temperature melt infiltration die is 330℃;

[0039] The second step: the 40 kilograms of long glass fiber Tufrov 4599 produced by PPG company is pulled into the high-...

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Abstract

The invention discloses a long glass fiber reinforced polypropylene compound and a preparation method thereof. The long glass fiber reinforced polypropylene compound is prepared from the following raw materials in percentage by weight: 40-88% of polypropylene, 0.1-2% of a heat stabilizer, 0.1-2% of an illumination stabilizer, 0.1-2% of a special nucleating agent for polypropylene, 2-10% of a compatibilizer, 0.1-2% of processing aids and 10-30% of long glass fiber. The long glass fiber reinforced polypropylene compound has the advantages of high rigidity, high heat resistance, high dimensional stability, excellent weather resistance and scratching resistance and low linear expansion coefficient and meets the production requirements of automotive anti-rubbing strips.

Description

Technical field [0001] The invention relates to a long glass fiber reinforced polypropylene composite special for automobile anti-scratch strips and a preparation method thereof, and belongs to the technical field of polymer materials and their molding processing. Background technique [0002] The car body will be equipped with body anti-scratch strips, the purpose is to prevent minor collisions and scratches from causing damage to the paint, and has a certain protective effect. The previous anti-scratch strips are all made of black rubber or stainless steel, which is inconsistent with the body color, making the car lack of overall feeling. The same color car body anti-scratch strips are generally made of high-strength engineering plastics, sprayed into the same color as the body, making the car look stronger and more beautiful. However, because the anti-scratch strips belong to the car exterior parts, with The drastic change of the external environment temperature can not cause...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L51/06C08K13/04C08K7/14C08K5/134C08K5/526C08K5/101C08K5/20C08J5/04
CPCC08L23/12C08J5/043C08J2323/12C08J2423/12C08J2451/06C08L2205/03
Inventor 陈勇文宋晓东陶四平李东肖华明陈国雄
Owner TIANJIN KINGFA NEW MATERIAL
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