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Continuous long glass fiber reinforced polypropylene composite for automobile airbag frame and preparation method thereof

A long glass fiber, automobile safety technology, applied in the field of polymer materials and their molding processing, can solve the problems of poor impact performance and limit applications, and achieve the effect of excellent high temperature rigidity and low temperature toughness

Active Publication Date: 2018-08-31
SHANGHAI KINGFA SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the poor impact performance of LFTPP at low temperature limits its application on the airbag frame.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The first step: 20 kg of polypropylene PP BX3900, 0.2 kg of phenolic heat stabilizer 1010, 0.3 kg of phosphite ester heat stabilizer 168, 0.5 kg of polypropylene special nucleating agent HPN-20E, 4 kg of compatibility agent Bondyram 1001 After being plasticized by a single-screw extruder, it is transported to the high-temperature melt infiltration tank through the die, and the temperature in the tank is 250-360℃;

[0030] The second step: plasticize 51 kg of polypropylene PP YPJ3860 and 4 kg of Dupont's toughening agent 493D through a single screw extruder and transport it to a low-temperature melt infiltration tank through a die. The temperature in the tank is 170-220℃;

[0031] The third step: 20 kg of continuous long glass fiber Tufrov 4588 produced by PPG company is drawn into the high-temperature melt infiltration tank in the first step at a speed of 25m / min. The length of the high-temperature melt infiltration tank is 2m; the low temperature in the second step Melt inf...

Embodiment 2

[0035] Step 1: Pass 30 kg of polypropylene PP BX3920, 0.5 kg of phenolic heat stabilizer 1010, 0.5 kg of thioester heat stabilizer 412S, 1 kg of polypropylene special nucleating agent Millad NX8000, and 6 kg of compatibility agent Bondyram 1001CN. After plasticizing, the single-screw extruder is transported to the high-temperature melt infiltration tank through the die, and the temperature in the tank is 250-360℃;

[0036] The second step: 26 kg of polypropylene PP BX3800 and 6 kg of Bondyram's toughening agent Bondyram 7003 are plasticized by a single screw extruder and then transported to the low-temperature melt infiltration tank through the die, and the temperature in the tank is 170-220℃;

[0037] The third step: 30 kilograms of continuous long glass fiber Tufrov 4599 produced by PPG company is drawn into the high temperature melt infiltration tank in the first step at a speed of 40m / min. The length of the high temperature melt infiltration tank is 2m; the low temperature in th...

Embodiment 3

[0041] The first step: 35 kg of polypropylene PP EP540V, 1 kg of phenolic heat stabilizer 1010, 1 kg of phosphite heat stabilizer 627A, 1 kg of polypropylene special nucleating agent Millad 3988, 8 kg of compatibilizer CA100 passed After plasticizing, the single-screw extruder is transported to the high-temperature melt infiltration tank through the die, and the temperature in the tank is 250-360℃;

[0042] The second step: 11 kg of polypropylene PP BX3900 and 8 kg of Bondyram's toughening agent Bondyram 7003A are plasticized by a single screw extruder and then transported to the low temperature melt infiltration tank through the die, and the temperature in the tank is 170-220℃;

[0043] The third step: the 35 kilograms of continuous long glass fiber Tufrov 4599 produced by PPG company is drawn into the high-temperature melt infiltration tank in the first step at a speed of 80m / min. The length of the high-temperature melt infiltration tank is 2m; the low temperature in the second st...

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Abstract

The invention discloses a continuous long fiber thermoplastic polypropylene compound specially used for an automobile air bag frame and a preparation method thereof. The continuous long fiber thermoplastic polypropylene (LFTPP) compound specially used for an automobile air bag frame is prepared from polypropylene, continuous long glass fiber, a heat stabilizer, a nucleating agent specially used for polypropylene, and a flexibilizer, and solves the defect of poor low-temperature impact performance of LFTPP. In order to solve the problem that high viscosity of the flexibilizer does not facilitate the infiltration of glass fiber, an LFT double infiltration die head process is adopted in the invention; infiltration of continuous long glass fiber by polypropylene is realized in a high temperature melt die head in the first step, and coating of thermoplastic elastomer and part of polypropylene is realized in a low temperature melt groove in the second step. The material of the invention has excellent high temperature rigidity and low temperature toughness, dimension stability, heat resistance, and durability, and meets material requirements of automobile air bag frames.

Description

Technical field [0001] The invention relates to a continuous long glass fiber reinforced polypropylene (LFTPP) compound special for automobile safety airbag frames and a preparation method thereof, and belongs to the field of polymer materials and their molding processing. Background technique [0002] The car airbag frame plays the role of carrying the car airbag to ensure that the airbag will not be damaged when it bursts in an emergency. Generally, the main engine factory stipulates that the airbag frame must be able to ensure that the -35℃ airbag does not break when it bursts, and the 85℃ airbag does not deform when it bursts. Therefore, the airbag frame has extremely high requirements for material performance. It is necessary to ensure that the material has excellent dimensional stability and excellent durability, but also to ensure the high temperature rigidity and low temperature toughness of the material. [0003] The current airbag frame material mainly uses glass fiber r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L23/14C08L51/06C08K13/04C08K7/14B29B9/00
CPCB29B9/00C08L23/12C08L23/14C08L2201/08C08L2205/025C08L2205/03C08L2205/035C08L2205/24C08L51/06C08K13/04C08K7/14C08L51/00
Inventor 刘志雄孙刚张永杨明刘远卢立波
Owner SHANGHAI KINGFA SCI & TECH