CN103541092A - PET (polyethylene terephthalate) air bag restraint system fabric - Google Patents
PET (polyethylene terephthalate) air bag restraint system fabric Download PDFInfo
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- CN103541092A CN103541092A CN201310491187.5A CN201310491187A CN103541092A CN 103541092 A CN103541092 A CN 103541092A CN 201310491187 A CN201310491187 A CN 201310491187A CN 103541092 A CN103541092 A CN 103541092A
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Abstract
The invention relates to PET (polyethylene terephthalate) air bag restraint system fabric, in particular to fabric with high fracture specific work, high strength, high elongation percentage and high flexibility and used for an automobile air bag restraint system. The PET air bag restraint system fabric is characterized in that both warp and weft which form the fabric are PET yarn, tests under ISO13934 tensile strength test standard conditions show that the fracture specific work of the fabric is 30-50KJ/Kg, and tensile fracture strength of the fabric is maintained to be more than 96% after being subjected to ageing treatment in a damp and hot drying oven with temperature of 90 DEG C and humidity of 95% for four hours; and the fracture specific work of the yarn is larger than 100J/m3. The PET air bag restraint system fabric has comprehensive superiority when compared with common PET fabric in performance, is similar to PA66 air bag restraint system fabric in energy absorbing performance, fracture elongation percentage and tearing strength, has superiority in fracture strength, needle grasping and stiffness and has quite high economic value.
Description
Technical field
The present invention relates to a kind of PET fabric for safety air bag, be specifically related to a kind of fabric for safe automobile air bag with high breaking work, high strength, high elongation rate and high flexibility, PET yarn used has high-tenacity and high elongation characteristics.
Background technology
Safe automobile air bag is as a kind of driving staff's safety system, its Main Function be for prevent from taking advantage of drive people in vehicle collision process with car body inside gadget generation secondary collision.During vehicle collision, safe automobile air bag is driven people's life security and has been played certain active protection effect taking advantage of, and particularly the protection under the collision of the positive and side of vehicle is particularly evident.Thereby safe automobile air bag becomes a kind of occupant safety safeguard measure that current automobile industry is accepted extensively, the use of air bag has obviously improved the passive safety of automobile.Air bag system is as automobile driving personnel's auxiliary security protection equipment, and it consists of air bag, impact microphone and gas charging system three parts.At present, the collision that air bag is mainly arranged in the ，Wei the place aheads, position such as the control wheel of automobile and the place ahead of front-row occupant and side (front row and rear row in car), car be outer or side vehicle provides driving staff's safeguard protection.The air bag overwhelming majority is made by very thin nylon fiber, after folding, pack the positions such as steering wheel or instrument board into, the inner surface of air bag conventionally applies one deck synthetic rubber or silicon rubber guarantees its air-tightness, while utilizing the fixing special belt of air bag inner surface to guarantee airbag aeration, makes it keep definite shape.When vehicle front or side and vehicle or other object strikes, crash sensor monitors that in collision process, car speed minimizing degree judges whether air bag should eject.
The fiber that is applied at present air bag is mainly polyamide fibre.Terylene safe air bag fabric is a novel product at present, the advantages such as impact that it has that cost is low, intensity is high, chemical resistance is good, changed by humidity is not obvious, only in the preliminary operational phase in batches of international main manufacturer, be a higher-end businesses comparatively speaking now.In the developing of non-coated fabric, terylene has occupied certain utilization rate with its excellent characteristic.During conventional security air bag is produced, polyamide fibre takes advantage when doing air bag material, but as long as the air bag of producing with dacron has high breaking work, high elongation at tear and the high flexibility of polyamide fibre air bag, just can substitute polyamide fibre production safety air bag.
The United States Patent (USP) 5,540,965 of Nishimura etc. discloses a kind of woven polyester air bag obtaining by shrink-setting processing.This patent discloses the elongation at break of preferred polyester fiber between 9-18%, if elongation at break is less than 9%, the tensile toughness of gained woven fabric is not enough, if elongation at break is greater than 18%, woven fabric may show dry undershrinking.It is the light-duty polyester air bag that polyester filament yarn that 9g/D and elongation at break are 15% is made into that the Japan Patent 7-186858 of the applications such as Kozauro discloses by toughness.Above-mentioned patent does not all describe energy absorption and the softness properties of knit polyester textile processed.
Summary of the invention
The object of the present invention is to provide a kind of have high-energy absorption, high-tenacity, high elongation rate, the good PET safe air bag fabric of ageing-resistant performance.
PET safe air bag fabric of the present invention by thering is high strength, PET fiber high flexible and low modulus processes through weaving.This fabric has the breaking work of 30-50KJ/Kg, has the not available high-energy absorption performance of common PET fabric and high-tenacity, high elongation.The method that realizes this air bag fabric high-energy absorption is to weave having high-strength height polyester fiber flexible and high tenacity.The breaking work of common PET fiber is at 70J/m
3, the breaking work of this fabric PET fiber used is greater than 100J/m
3thereby, realized air bag fabric high-energy absorption.If breaking work is less than 30KJ/Kg, fabric can not effectively absorb energy and plays a protective role; If make fabric breaking work be greater than 50KJ/Kg, need more high performance PET yarn, will make price raise.Fibrous fracture used is greater than 100J/m than merit
3time, be conducive to gas cell fabric breaking work and improve, improve air bag anti-damage performance.
A kind of PET safe air bag fabric, it is characterized in that: what form fabric is PET yarn through weft yarn, under ISO 13934 tensile strength testing standard conditions, record the breaking work that this fabric has 30-50KJ/Kg, in temperature is 90 ℃, the humidity damp and hot baking oven that is 95% burin-in process after 4 hours fabric tension ultimate strength remain on more than 96%; The breaking work of yarn used is greater than 100J/m
3.
PET fabric gas cell fabric of the present invention, in this air-bag fabric layer, forming fabric is PET yarn through the yarn of broadwise, its fiber number is 300-700D, long filament radical 60-144, single end strength is 8-9.5g/D, elongation at break > 17%.If the fiber number of PET long filament is less than 300D, will cause fabric tension brute force to diminish, when airbag deployment, easily rupture, can not play a protective role.If the fiber number of PET long filament is greater than 700D, will cause firm softness and the taking in property variation of fabric.
PET fabric safe air bag fabric of the present invention, this fabric can be coating or non-coated fabric.For coated fabric, used coating is organosiloxane and adhesive thereof, and its coating weight is 15-100g/m
2.If coating weight is less than 15g/m
2, the air permeability of fabric can become greatly, is unfavorable for airbag aeration.If coating weight is greater than 100g/m
2, coated fabric thickening, airbag fold thickness becomes and is unfavorable for greatly the development trend that air bag is lightweight, volume is little.For this PET gas cell fabric coating weight, be preferably 20-70g/m
2.
PET fabric safe air bag fabric of the present invention, in described tissue layer, fabric is 25-70 piece/inch through latitudinal density (claiming again weft density).If fabric through latitudinal density, be less than 25 pieces/inch, the intensity of fabric is too low, can not be used as gas cell fabric.If fabric through latitudinal density, be greater than 70 pieces/inch, manufacture difficulty and fabric is harder, be unfavorable for the pliability of air bag, during inflation, may cause certain injury to human body.Consider weaving condition and applicability, this fabric through latitudinal density, be preferably 41-64 piece/inch.
PET fabric safe air bag fabric of the present invention, this fabric is less than 20N through broadwise deflection.If fabric through broadwise deflection, be greater than 20N, the impact strength for human body when airbag deployment is larger, may damage human body.Consider weaving condition and applicability, the stiffness of this fabric is preferably 4-10N.
PET fabric safe air bag fabric of the present invention, this fabric through broadwise tension failure brute force, be more than 2500N/5cm.If fabric through broadwise tension failure brute force, be less than 2500N/5cm, air bag is when High Temperature High Pressure is launched, fabric bears the tensile failure that incessantly high pressure draught brings, fabric fracture, does not have the protective effect to human body.
The fabric elongation at break for air bag of at room temperature measuring according to ASTM D 5034 methods can be 25-60%, and preferred 30-50%.With regard to toughness, preferably, elongation at break >=25%.With regard to resistance to edge comb voltinism, equally preferably, elongation at break is no more than 60%.
PET fabric safe air bag fabric of the present invention, this fabric through broadwise pin, to grasp drag be 300-1000N.If the grasping drag through broadwise pin and be less than 300N of fabric, physical property is bad upon deployment for fabric.If the pin of fabric grasps drag higher than 1000N, in fabric, between silk and silk, cohesive force is very large, and fabric face is harder, and air bag is foldable not.This fabric pin grasps drag and is preferably 450-800N.
PET safe air bag fabric of the present invention, this fabric through broadwise tearing strength, be 100-400N.If fabric tearing strength is less than 100N, possibility explosion during airbag deployment; If tearing strength is greater than 400N, when airbag deployment, the resistance to edge of fabric comb voltinism reduces, and air-tightness is deteriorated fast.This fabric tearing strength is preferably 150-380N accordingly.
The production method of PET fabric safe air bag fabric of the present invention comprises warping, weaves, concise, dryness finalization and coating.
PET fabric safe air bag fabric of the present invention has the performance of high-energy absorption, high-tenacity, high elongation rate.
The specific embodiment
By following examples, the present invention is described in further detail.Physical property in embodiment is measured by following method.
The breaking work of fabric and fiber
Breaking work=
F represents that fabric or fiber offer the load of fabric while being elongated dl
Dl represents the length that fabric or fiber have been elongated
M represents the quality of fabric or fiber
Thickness
According to ASTM D 1777 thickness measure canonical measure fabric thicknesses.
Weft density
According to ASTM D 3775 density measurement standards, utilize Density Measuring Instrument to test Density.
Tensile strength
According to ISO 13934 tensile strength testing standards, measure.Concrete grammar is, on tension test instrument 5*30(cm) style be clipped on tensile strength special purpose device, chuck spacing is 200mm, with the speed of 200mm/min, tests.
Pin grasps drag
The testing standard that grasps drag according to ASTM D6479-02 pin is measured.Concrete grammar is, on tension test instrument 5*30(cm) style be clipped in pin and grasp on drag test special purpose device, the chuck spacing of tension test instrument is 20cm, with the speed of 200mm/min, tests.
Through broadwise, tear brute force
According to ASTM D2261 tearing strength testing standard, measure.Concrete grammar is by 75*200(mm) specimen holder on tearing strength test special purpose device, clamping plate spacing is 76mm, with the speed of 300mm/min, tests.
Embodiment 1
Employing fiber number is that 315D, single thread radical are that 136, ultimate strength are the PET raw yarn that 29.8N, elongation at break are 18%.Above-mentioned raw yarn is weaved to acquisition weft density through warping and be the plain cloth of 60 pieces/inch, it is carried out obtaining fabric for safety air bag after concise HEAT SETTING processing, evaluate the physical property of this fabric.By the textile for air sacs obtaining burin-in process 4 hours in temperature is 90 ℃, the humidity damp and hot baking oven that is 95%, revalue the fabric physical property after burin-in process, and be shown in table 1.
Embodiment 2
Employing fiber number is that 420D, single thread radical are that 105, ultimate strength are the PET raw yarn that 37.5N, elongation at break are 18%.Above-mentioned raw yarn is weaved to acquisition weft density through warping and be the plain cloth of 49 pieces/inch, it is carried out obtaining coating fabric for safety air bag after concise HEAT SETTING and gluing processing, evaluate the physical property of this fabric.By the textile for air sacs obtaining burin-in process 4 hours in temperature is 90 ℃, the humidity damp and hot baking oven that is 95%, revalue the fabric physical property after burin-in process, and be shown in table 1.
Embodiment 3
Employing fiber number is that 630D, single thread radical are that 68, ultimate strength are the PET raw yarn that 58.5N, elongation at break are 17.6%.Above-mentioned raw yarn is weaved to acquisition weft density through warping and be the plain cloth of 41 pieces/inch, it is carried out obtaining coating fabric for safety air bag after concise HEAT SETTING and gluing processing, evaluate the physical property of this fabric.By the textile for air sacs obtaining burin-in process 4 hours in temperature is 90 ℃, the humidity damp and hot baking oven that is 95%, revalue the fabric physical property after burin-in process, and be shown in table 1.
Comparative example 1
Employing fiber number is that 500D, single thread radical are that 105, ultimate strength are the common PET raw yarn that 37.7N, elongation at break are 14.2%.Above-mentioned raw yarn is weaved to acquisition weft density through warping and be the plain cloth of 49 pieces/inch, it is carried out obtaining fabric for safety air bag after concise HEAT SETTING processing, evaluate the physical property of this fabric.By the textile for air sacs obtaining burin-in process 4 hours in temperature is 90 ℃, the humidity damp and hot baking oven that is 95%, revalue the fabric physical property after burin-in process, and be shown in table 1.
Comparative example 2
Employing fiber number is that 315D, single thread radical are that 136, ultimate strength are the PA66 raw yarn that 28.4N, elongation at break are 18.9%.Above-mentioned raw yarn is weaved to acquisition weft density through warping and be the plain cloth of 41 pieces/inch, it is carried out to concise HEAT SETTING and obtain fabric for safety air bag, evaluate the physical property of this fabric.By the textile for air sacs obtaining burin-in process 4 hours in temperature is 90 ℃, the humidity damp and hot baking oven that is 95%, revalue the fabric physical property after burin-in process, and be shown in table 1.
Comparative example 3
Employing fiber number is that 630D, single thread radical are that 68, ultimate strength are the PA66 raw yarn that 58.6N, elongation at break are 19.3%.Above-mentioned raw yarn is weaved to acquisition weft density through warping and be the plain cloth of 41 pieces/inch, it is carried out obtaining fabric for safety air bag after concise HEAT SETTING and gluing processing, evaluate the physical property of this fabric.By the textile for air sacs obtaining burin-in process 4 hours in temperature is 90 ℃, the humidity damp and hot baking oven that is 95%, revalue the fabric physical property after burin-in process, and be shown in table 1.
Table 1
Embodiment can find out that with comparative example 1 this PET gas cell fabric has comprehensive superiority than common PET fabric at aspect of performance as can be seen from the table.By showing that with comparative example 2 and comparative example 3 this PET gas cell fabric has energy absorption, the elongation at break close with PA66 gas cell fabric and tears brute force, and ultimate strength, pin grab and stiffness aspect there is superiority.Because price advantage is obvious, this PET gas cell fabric has very high economic worth.
Claims (9)
1. a PET safe air bag fabric, it is characterized in that: what form fabric is PET yarn through weft yarn, under ISO 13934 tensile strength testing standard conditions, record the breaking work that this fabric has 30-50KJ/Kg, in temperature is 90 ℃, the humidity damp and hot baking oven that is 95% burin-in process after 4 hours fabric tension ultimate strength remain on more than 96%; The breaking work of yarn used is greater than 100J/m
3.
2. PET safe air bag fabric according to claim 1, is characterized in that: described PET denier count as received is 300D-700D, long filament radical 60-144, and single end strength is 8-9.5g/D, elongation at break > 17%.
3. PET safe air bag fabric according to claim 1 and 2, is characterized in that: this fabric is coating or non-coated fabric.
4. PET safe air bag fabric according to claim 3, is characterized in that: this fabric is coated fabric, and the coating weight of described coated fabric is 15-100g/m
2.
5. PET safe air bag fabric according to claim 1 and 2, is characterized in that: this fabric through latitudinal density, be 25-70 piece/inch.
6. PET safe air bag fabric according to claim 1 and 2, is characterized in that: this fabric is through broadwise deflection < 20N.
7. PET safe air bag fabric according to claim 1 and 2, is characterized in that: this fabric is greater than 3000N/5cm through broadwise tensile strength, and elongation at break is 25-35%.
8. PET safe air bag fabric according to claim 1 and 2, is characterized in that: it is 300-1000N that this fabric grasps drag through broadwise pin.
9. PET safe air bag fabric according to claim 1 and 2, is characterized in that: it is 100-400N that this fabric is torn powerful through broadwise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310491187.5A CN103541092A (en) | 2013-10-18 | 2013-10-18 | PET (polyethylene terephthalate) air bag restraint system fabric |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310491187.5A CN103541092A (en) | 2013-10-18 | 2013-10-18 | PET (polyethylene terephthalate) air bag restraint system fabric |
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|---|---|
| CN103541092A true CN103541092A (en) | 2014-01-29 |
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|---|---|---|---|
| CN201310491187.5A Pending CN103541092A (en) | 2013-10-18 | 2013-10-18 | PET (polyethylene terephthalate) air bag restraint system fabric |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104760345A (en) * | 2015-03-16 | 2015-07-08 | 可隆（南京）特种纺织品有限公司 | Air bag having exhausting apparatus and processing method thereof |
| CN106489000A (en) * | 2014-06-24 | 2017-03-08 | 可隆工业株式会社 | The method preparing the polyester textile for air bag |
| CN109940950A (en) * | 2019-03-19 | 2019-06-28 | 北京星网宇达科技股份有限公司 | Compound fabric and flexible air-bag product comprising it |
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| CN103354846A (en) * | 2011-01-18 | 2013-10-16 | 可隆工业株式会社 | Polyester fiber and polyester fabric comprising same |
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| US7179762B1 (en) * | 2000-04-26 | 2007-02-20 | Safety Components Fabric Technologies, Inc. | Motor vehicle air bag and fabric for use in same |
| CN1771153A (en) * | 2003-05-15 | 2006-05-10 | 因温斯特技术公司 | Polyester filament woven fabric for air bags |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106489000A (en) * | 2014-06-24 | 2017-03-08 | 可隆工业株式会社 | The method preparing the polyester textile for air bag |
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| CN109940950A (en) * | 2019-03-19 | 2019-06-28 | 北京星网宇达科技股份有限公司 | Compound fabric and flexible air-bag product comprising it |
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Application publication date: 20140129 |