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Process for producing polyester industrial fiber for processing safe air bag of automobile

A technology of automobile safety and manufacturing method, applied in the field of chemical fiber product manufacturing, can solve the problems of high production cost and high processing cost of nylon 66 filament, and achieve the effects of reducing finishing cost, guaranteeing service life and reducing unit weight.

Active Publication Date: 2011-05-18
ZHEJIANG HAILIDE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nylon 66 fine-denier industrial filament was used as the material of automobile airbag fabric before, because nylon 66 has high strength and high enthalpy value, and it can effectively flame-retardant when hot air is inflated, but the production of nylon 66 filament The cost is high, and the post-processing cost is also high

Method used

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  • Process for producing polyester industrial fiber for processing safe air bag of automobile
  • Process for producing polyester industrial fiber for processing safe air bag of automobile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The process parameters are as follows:

[0019] Equipment: SSP chip continuous solid state polymerization equipment; spinning equipment; stretching and winding equipment.

[0020] Product specification: 466dtex / 96f

[0021] Raw materials: glossy polyester chips with a viscosity of 1.05 after thickening; terminal carboxyl-COOH≤15mol / t; diethylene glycol≤1.2%

[0022] 1. Screw extruder

[0023] temperature °C

[0024] Zone 1 Zone 2 Zone 3 Zone 4 Zone 5 Zone 6

[0025] 300 300 298 295 295 295

[0026] 2. Spinning temperature

[0027] 300℃

[0028] 3. Slow cooling and heating temperature

[0029] 330°C

[0030] 4. Pump supply

[0031] 121g / min

[0032] 5. Side blowing cooling parameters

[0033] Wind speed: 0.60m / s; Humidity: 60%; Wind temperature: 18℃

[0034] 6. Stretching conditions

[0035] Pre-stretch ratio: 1.03

[0036] Primary stretch ratio: 3.4

[0037] Total stretch ratio: 5.71

[0038] Stretching roller Speed ​​m / min Temperature ℃

[0039] GR1 50...

Embodiment 2

[0055] The process parameters are as follows:

[0056] Equipment: SSP chip continuous solid state polymerization equipment; spinning equipment; stretching and winding equipment.

[0057] Product specification: 555dtex / 96f

[0058] Raw materials: glossy polyester chips with a viscosity of 1.05 after thickening; terminal carboxyl-COOH≤15mol / t; diethylene glycol≤1.2%

[0059] 1. Screw extruder

[0060] temperature °C

[0061] Zone 1 Zone 2 Zone 3 Zone 4 Zone 5 Zone 6

[0062] 300 300 299 293 293 293

[0063] 2. Spinning temperature

[0064] 300℃

[0065] 3. Slow cooling and heating temperature

[0066] 330°C

[0067] 3. Pump supply

[0068] 144g / min

[0069] 4. Side blowing cooling parameters

[0070] Wind speed: 0.60m / s; Humidity: 60%; Wind temperature: 18℃

[0071] 5. Stretching conditions

[0072] Pre-stretch ratio: 1.03

[0073] Primary stretch ratio: 3.4

[0074] Total stretch ratio: 5.68

[0075] Stretching roller Speed ​​m / min Temperature ℃

[0076] GR1 509 ...

Embodiment 3

[0092] The process parameters are as follows:

[0093] Equipment: SSP chip continuous solid state polymerization equipment; spinning equipment; stretching and winding equipment.

[0094] Product specification: 933dtex / 144f

[0095] Raw materials: glossy polyester chips with a viscosity of 1.05 after thickening; terminal carboxyl-COOH≤15mol / t; diethylene glycol≤1.2%

[0096] 1) Screw extruder

[0097] temperature °C

[0098] Zone 1 Zone 2 Zone 3 Zone 4 Zone 5 Zone 6

[0099] 320 315 310 293 293 293

[0100] 2. Spinning temperature

[0101] 300℃

[0102] 3. Slow cooling and heating temperature

[0103] 340°C

[0104] 4. Pump supply

[0105] 279.9g / min

[0106] 5. Side blowing cooling parameters

[0107] Wind speed: 0.50m / s; Humidity: 60%; Wind temperature: 18℃

[0108] 6. Stretching conditions

[0109] Pre-stretch ratio: 1.05

[0110] Primary stretch ratio: 3.5

[0111] Total stretch ratio: 5.623

[0112] Stretching roller Speed ​​m / min Temperature ℃

[0113] GR...

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Abstract

The invention relates to a process for producing a polyester industrial long fiber for processing a safe air bag of an automobile, which sequentially comprises the following steps: A. processing a polyester slice with high viscosity: enabling the viscosity of the polyester slice to reach 1.0-1.1dl / g; B. melting and spinning: transmitting the polyester slice after solid phase polymerization to a spinning screw rod extruder, melting in a spinning screw rod, entering a spinning assembly by a metering pump and extruding from a fiber spray plate with a diameter of 190 mm to 220 mm to spin fusant, , then heating by a slow cooling heater, carrying out cooling for molding by a side-molding blowing device and then entering a spinning passage; C. stretching and winding: oiling the surface of a fiber and carrying out second-grade high-speed stretching with the total stretching multiple being 5.0 to 5.8, carrying out high-temperature loosing thermoforming at 230 DEG C-250 DEG C and carrying out winding for molding in the range of the winding process speed of 2,500-3,000 m / min to prepare a finished product. The fiber for the safe air bag, which is produced by the process, can completely replace a nylon 66 fiber, is used for spinning terylene safe air bag fabrics and greatly reduces the processing cost.

Description

technical field [0001] The invention belongs to the field of manufacturing chemical fiber products, in particular to a method for manufacturing polyester industrial yarns for automobile airbags. Background technique [0002] 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 generator, and the resulting high-temperature and high-speed airflow will inflate and expand the originally folded airbag to protect the safety of the passengers. Automobile airbags have good physical and mechanical properties, requiring high strength, light weight, good friction properties, good elasticity, and suitable thermal properties: they should have high melting points and high enthalpy values, which are conducive to ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/10D01D5/084D01D5/092D01D10/02D02J1/22D02J13/00
Inventor 葛骏敏马鹏程韩峰
Owner ZHEJIANG HAILIDE NEW MATERIAL
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