Preparation method of high-resilience polyester industrial filament yarns for supplementary restraint system

An airbag and recovery technology, which is applied in filament forming treatment, filament/thread forming, artificial filament heat treatment, etc., can solve the problem of performance degradation and achieve the effect of improving compression resilience

Active Publication Date: 2013-11-20
ORIENTAL IND SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the process setting of improving the high elastic recovery of polyester industrial yarn often leads to the decline of other properties, so far there is no progress

Method used

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  • Preparation method of high-resilience polyester industrial filament yarns for supplementary restraint system
  • Preparation method of high-resilience polyester industrial filament yarns for supplementary restraint system
  • Preparation method of high-resilience polyester industrial filament yarns for supplementary restraint system

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preparation example Construction

[0036]The invention provides a method for preparing high elastic recovery polyester industrial filaments for airbags. The raw material used is low-viscosity PET slices with a viscosity of 0.67dl / g, and the low-viscosity slices are heated under the protection of hot nitrogen at 210°C-220°C. Carry out solid phase repolymerization under high temperature conditions for 25-35 hours, and the prepared high-viscosity slices have a moisture content of less than 30ppm and a viscosity of 0.9-1.0dl / g. The prepared high-viscosity slices are melt-spun at 290°C-320°C. The equipment used is a screw extruder, and the slices are melted uniformly in the screw extruder, with low thermal degradation and low loss of melt viscosity. The screw extruder makes the obtained spinning melt have good properties. The screw diameter of the screw extruder is 90-150mm, the aspect ratio is 25-30, and the melting temperature is 290°C-320°C. After the high-viscosity PET chips are transported to the screw extruder...

specific Embodiment 1

[0038] The implementation process is as described above, and the implementation process parameters are shown in the following table:

[0039] Table 1 Preparation parameters of a kind of high elastic recovery polyester industrial filament for airbag

[0040]

[0041]

[0042] Wherein, the formula of the first high temperature resistant oil agent is: mineral oil, 32%; sodium lauryl sulfonate, 3%; oleic acid diethanolamide, 20%; isotridecanyl stearate, 35% ; Tert-Butyl Cellosolve, 5%; Phthalates, 5%.

[0043] The formula of the second high temperature resistant oil agent is: mineral oil, 35%; sodium lauryl sulfonate, 2%; oleic acid diethanolamide, 20%; isotridecanyl stearate, 35%; Butyl cellosolve, 3%; N-phenyl-β-naphthylamine, 1.5%; N-phenyl-N'-isopropyl-p-phenylenediamine, 1.5%; MCA 2%. The operating speed of the second oiling and oiling process is 3000m / min.

[0044] After the melt-spinning stage transports the obtained high-viscosity PET chips to the screw extruder, ...

specific Embodiment 2

[0045] The implementation process is as described above, and the implementation process parameters are shown in the following table:

[0046] Table 2 Process parameters of a high elastic recovery polyester industrial filament for airbags

[0047]

[0048]

[0049] The formula of the first high temperature resistant oil agent is: mineral oil, 45%; sodium lauryl sulfonate, 2%; oleic acid diethanolamide, 20%; isotridecanyl stearate, 30%; Butyl Cellosolve, 2%; Phthalates, 1%.

[0050] The formula of the second high temperature resistant oil agent is: mineral oil, 50%; sodium lauryl sulfonate, 3%; oleic acid diethanolamide, 15%; isotridecanyl stearate, 25%; Butyl cellosolve, 4%; N-phenyl-β-naphthylamine, 1%; N-phenyl-N'-isopropyl-p-phenylenediamine, 1%; MCA 1%. The running speed of the second oiling is 2800m / min.

[0051] After the melt-spinning stage transports the obtained high-viscosity PET chips to the screw extruder, a plasticizer is added to the screw extruder, and t...

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Abstract

The invention discloses a preparation method of high-resilience polyester industrial filament yarns for a supplementary restraint system. The preparation method comprises the process steps of (1) adopting a continuous solid-phase polymerization method to prepare a high viscosity slicing sheet, (2) conveying the prepared high viscosity PET slicing sheet to a screw extruder, extruding out flux by the screw extruder at the high-temperature condition of 290-320 DEG C, enabling the flux to pass through a flux pipe and then be sprayed out from a circular or abnormal-shaped spinneret orifice, enabling the flux to sequentially pass through a slow cooling device and a cooling device, and then enabling the flux to enter a spinning shaft, (3) spraying the surfaces of nascent fibers with a first high-temperature resistance oiling agent and conducting multistage high-speed drafting and high-temperature slack heat shaping, and (4) conducing second oil applying on filament yarns after the slack heat shaping is carried out, enabling the concentration of the oiling agent to be 95%-100%, conducting three-dimensional and two-dimensional composite winding shaping on the oiled filament yarns at the winding speed of 2600-3800 per minute, and preparing the high-resilience polyester industrial filament yarns.

Description

technical field [0001] The invention relates to an industrial filament, in particular to a preparation method of polyester industrial filament for airbags. Background technique [0002] In recent years, China's automobile industry has developed rapidly as a pillar industry, and the safe driving of automobiles has become a focus of attention of automobile manufacturers and passengers. With the improvement of users' safety awareness, in order to reduce the damage to the driver and passengers caused by the huge inertial force when the car has a frontal collision, it will be an inevitable development trend to equip various airbags. [0003] Car airbags are mainly composed of three parts: identification system (sensor), inflation system (gas generator) and airbag. When a car collides, a pair of sensors installed on the front bumper of the car will identify the impact strength. When the intensity is high, the sensor will send a signal to trigger the propellant in the gas generato...

Claims

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Application Information

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IPC IPC(8): D01D5/08D01D1/00D01D5/096D01D5/098D01D10/02
Inventor 范达财王好龙
Owner ORIENTAL IND SUZHOU
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