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Continuous long fiber thermoplastic polypropylene compound specially used for automobile air bag frame and preparation method thereof

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

Active Publication Date: 2014-09-24
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 heat stabilizer 168, 0.5 kg of polypropylene special nucleating agent HPN-20E, 4 kg of compatibilizer Bondyram1001 After being plasticized by a single-screw extruder, it is transported to a high-temperature melt infiltration tank through a die, and the temperature in the tank is 250-360°C;

[0030] Step 2: Plasticize 51 kilograms of polypropylene PP YPJ3860 and 4 kilograms of toughening agent 493D from Dupont through a single-screw extruder, and transport them to a low-temperature melt infiltration tank through a die. The temperature in the tank is 170-220 °C;

[0031] The third step: 20 kg of continuous long glass fiber Tufrov4588 produced by PPG company is drawn and input into the high-temperature melt infiltration tank in the first step at a speed of 25m / min, and the length of the high-temperature melt infiltration tank is 2m; the low-temperature melt in the ...

Embodiment 2

[0035] The first step: 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 compatibilizer Bondyram1001CN through After the single-screw extruder is plasticized, it is transported to the high-temperature melt infiltration tank through the die, and the temperature in the tank is 250-360°C;

[0036] Step 2: Plasticize 26 kilograms of polypropylene PP BX3800 and 6 kilograms of Bondyram's toughening agent Bondyram7003 through a single-screw extruder and transport them to a low-temperature melt infiltration tank through a die, and the temperature in the tank is 170-220 °C;

[0037] The third step: 30 kg of continuous long glass fiber Tufrov4599 produced by PPG company is drawn into the high-temperature melt infiltration tank in the first step at a speed of 40m / min, and the length of the high-temperature melt infiltration tank is 2m; the low-t...

Embodiment 3

[0041] The first step: pass 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, and 8 kg of compatibilizer CA100 through the After the single-screw extruder is plasticized, it is transported to the high-temperature melt infiltration tank through the die, and the temperature in the tank is 250-360°C;

[0042] Step 2: Plasticize 11 kilograms of polypropylene PP BX3900 and 8 kilograms of Bondyram's toughening agent Bondyram7003A through a single-screw extruder, then transport them to a low-temperature melt infiltration tank through a die, and the temperature in the tank is 170-220 °C;

[0043] Step 3: Traction 35 kg of continuous long glass fiber Tufrov4599 produced by PPG Company at a speed of 80m / min into the high-temperature melt infiltration tank in the first step, and the length of the high-temperature melt infiltration tank is 2m; the low-temperature melt ...

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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 special continuous long glass fiber reinforced polypropylene (LFTPP) composite for automobile airbag frames and a preparation method thereof, which belongs to the field of polymer materials and their molding and processing. Background technique [0002] The car airbag frame plays the role of carrying the car airbag, ensuring that the airbag will not be damaged when it explodes in an emergency. Generally, OEMs stipulate that the airbag frame must be able to ensure that the airbag does not break when it explodes at -35°C, and that it does not deform when the airbag explodes at 85°C. Therefore, the airbag frame has extremely high requirements on the material performance. It is necessary to ensure that the material has excellent dimensional stability and durability, and at the same time, the high-temperature rigidity and low-temperature toughness of the material must be ensured. [0003] The current airbag frame material mainly ...

Claims

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Application Information

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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
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