CN102409423A - High-strength tinted filament for air bag - Google Patents
High-strength tinted filament for air bag Download PDFInfo
- Publication number
- CN102409423A CN102409423A CN2010102928825A CN201010292882A CN102409423A CN 102409423 A CN102409423 A CN 102409423A CN 2010102928825 A CN2010102928825 A CN 2010102928825A CN 201010292882 A CN201010292882 A CN 201010292882A CN 102409423 A CN102409423 A CN 102409423A
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- air bag
- painted silk
- painted
- silk
- tenacity
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Abstract
The invention discloses a high-strength tinted filament for air bags; a polymer component which forms the tinted filament is polyamide; the tinted filament has an adding amount of the polymer chips of 2-10%, and a tensile break strength of above 7.6 cN/dtex. The tinted filament not only can maintain the mechanical properties of air bag fabrics, but also has a marking function in the fabrics; the mechanical properties and weavability of the fabrics are not affected, and no floating yarn or wrinkle appears on fabric surfaces.
Description
Technical field
The present invention relates to a kind of air bag with the painted silk of high-tenacity.
Background technology
In recent years, Along with people's improves the concern of vehicle safety day by day, and the passive restraint system of automobile has become consumer, government bodies and automaker's focus.Installation rate as the air bag of one of automotive safety parts is also promptly improving.At present, air bag has become the most widely used passive restraint system of the U.S., and in other countries, the use of air bag is also in continuing to increase.
Since differences such as precursor kind, fabric tissue, use location, and weaved multiple air bag base cloth.In cutting, make, in the assembling process, if mistake is cut out the air bag base cloth, possibly there is very big problem in the air bag after making so aspect security.Therefore, at necessary usage flag yarn of the stage of weaving.The operating personnel can discern through the mark yarn very soon, and effectively prevents the generation that mistake is cut out.
Among the patent publication No. CN101634052; Propose a kind of processing automobile air bag and can substitute nylon 66 fiber fully with polyester industrial filament; Be used to weave the terylene safe air bag fabric; Though the processing cost of greatly reducing thisly is the fabric of polyester industrial filament through weft yarn normally mechanical property is relatively poor, and heat resistance is also relatively poor.Propose a kind of high-strength, high-shrinkage polyamide 66 filament yarn among the patent publication No. CN1194017 and be used for technical fabric; Especially for the fabric of making airbag; But that processes air-bag fabric all uses this high-strength high filament yarn that shrinks through weft yarn; Operating mistake taking place in the cutting operation process easily, be difficult in time coming to light, will cause bigger economic loss like this.
Summary of the invention
The object of the present invention is to provide a kind of air bag with the painted silk of high-tenacity, use this painted silk in the stage of weaving, the operating personnel can discern through this mark yarn very soon, effectively prevents the generation that mistake is cut out.
Technical solution of the present invention is following:
Air bag of the present invention is with the painted silk of high-tenacity, and the polymer that forms this painted silk is a polyamide, and the polymer chips addition of this painted silk is 2～10%, and tensile break strength is more than 7.6cN/dtex.Wherein, polymer chips addition of this painted silk is preferred 2～8%, if addition is lower than 2%, coloring effect is not remarkable, in tailoring process, makes a mistake easily; If addition is higher than 10%, cause production cost to increase.More than the preferred 7.8cN/dtex of tensile break strength, more preferably more than the 8.0cN/dtex.If the TENSILE STRENGTH of long filament is more than 7.6cN/dtex; Help the higher mechanical property that gas cell fabric is consistent; Make gas cell fabric when opening, can keep bag shape preferably, gas can in time be full of, thereby plays the protective effect to driver and crew.If the painted silk that in weaving process, adds 5～50, the total radical of warp thread is seldom in the fabric for forming, so the mechanical property of fabric is not influenced.
Air bag of the present invention is with the painted silk of high-tenacity, and this air bag is applicable to fabric marker with the painted silk of high-tenacity, and tension fracture elongation rate is more than 20%.Break if tension fracture elongation rate is easy to generate when less than 20%, causing gas cell fabric to be opened, thereby can't play the effect of protecting personal security.
Air bag of the present invention is with the painted silk of high-tenacity, and the fiber number of this painted silk wherein contains 60～196 monofilament in this painted silk between 300～900dtex.If the long filament that adopts the monofilament radical to be less than 60 is weaved, the gas permeability of fabric can be bigger; If adopt the monofilament radical to weave more than 196 long filament, the gas permeability of fabric can diminish, and will increase the spinning difficulty like this, also is unfavorable for weaving, but also can causes production cost to increase.If the fiber number of painted silk is lower than 300dtex, can cause the weave machine decreased performance, needed high-strength mechanical performance in the time of can't satisfying air bag and open; If the fiber number of painted silk is higher than 900dtex, can cause fabric thickness to increase, just softness increases, and the taking in property of air bag is bad.
Air bag of the present invention is with the painted silk of high-tenacity, and the boiling water shrinkage of this painted silk is between 6～10%.If the boiling water shrinkage of painted silk is lower than 6%, the gas permeability of fabric will variation; If the boiling water shrinkage of painted silk is higher than 10%, the DIMENSIONAL STABILITY of fabric will variation.
Air bag of the present invention is with the painted silk of high-tenacity, and the initial modulus of this painted silk is more than 25cN/dtex.The long filament initial modulus is also claimed " elastic modelling quantity ", and it is meant the ess-strain ratio of one section straight line portion of beginning on the long filament stress strain curve.The size of long filament elastic modelling quantity is represented the complexity of long filament under the certain load effect, and it has reflected the rigidity of long filament.Adopt the long filament of initial modulus more than 25cN/dtex of painted silk to carry out woven words, the long filament initial modulus is big more, and its rigidity is just strong more, in weaving process, also just is difficult for deformation; If instead adopt initial modulus to weave less than the long filament of 25cN/dtex, initial modulus is low, and a little less than the rigidity, long filament is prone to take place deformation in weaving process.
Air bag of the present invention is under the 107 ℃ * 408hr with the painted silk of high-tenacity at aging condition, and the aging intensity conservation rate of this painted silk is more than 80%.
Through heat ageing (107 ℃ * 408hr) conservation rate of its TENSILE STRENGTH is more than 80%; If the heat ageing stretching strength retentivity is less than 80%; So just can't guarantee to begin to discarded process from automobile production, the durable degree of air bag, the performance of air bag can not get guaranteeing.
(conservation rate of 70 ℃ * 95% * 408hr) its TENSILE STRENGTH is more than 80% through hydrothermal aging; If the hydrothermal aging stretching strength retentivity is less than 80%; So just can't guarantee to begin to discarded process from automobile production; The durable degree of air bag, the performance of air bag can not get guaranteeing.
Air bag of the present invention is with the painted silk of high-tenacity, and hundred meters deviation of weights of this painted silk are below 0.1%.If hundred meters deviation of weights are higher than 0.1%, then the mechanical stability of long filament is relatively poor, and the mechanics deviation of weaving back gained fabric is bigger, produces from mechanical property the weakest point easily when causing airbag-releasing and breaks, thereby can't play the effect of protecting personal security.
The specific embodiment
Through following examples, the present invention is described in further detail.Rerum natura among the embodiment is measured by following method.
[tensile break strength and percentage elongation]
Testing standard according to JIS L-1017 is tested on the tension test appearance.Concrete method of testing is following: the long filament sample is fixed in the mouth of folder up and down of tension test appearance, pre-tension is 0.2N, and the mouth of the folder up and down spacing of tension test appearance is 250mm, makes an experiment with the speed of 300mm/min.TENSILE STRENGTH equals to test the fiber number of the tensile strength of gained divided by this long filament sample.The computing formula of tension fracture elongation rate is following:
Elongation at break (%)=(L-L
0)/L
0* 100%
L wherein
0: specimen length before the fracture
L: fracture back specimen length
[fiber number]
According to the testing standard of JIS L-1017, use thread yarn horizontal metroscope coiling 100 circle samples, every circle length is 1 meter, rotating speed is 120rpm, then sample is taken off knotting, puts into baking oven then and carries out dried.Treatment conditions: temperature is 105 ± 2 ℃, and the time is more than 2 hours.After the sample taking-up, use precision balance to weigh, obtain absolute dry weight.The computing formula of fiber number is following:
d＝M’*10000*(1+Rc/100)/L
Wherein
D: fiber number (dtex)
Rc: official regain (%)
M ': the absolute dry weight of sample (g)
L: the length of sample (m)
[boiling water shrinkage]
According to the testing standard of JIS L-1017, use thread yarn horizontal metroscope coiling 5 circle samples, every circle length is 1 meter, rotating speed is 120rpm, takes off after then sample being tied a knot from beginning to end, adds loading just, uses the length of surveying this sample of long table measurement.Then the loading on the sample is removed, immerse in the boiling water and carry out the boiling water shrink process.Treatment conditions: temperature is 100 ℃, and the time is 30min.After the sample taking-up, in the laboratory of standard state, place more than 3 hours, add loading just, the length of the sample after the long table measurement boiling water treating is surveyed in use.The boiling water shrinkage of 5 samples of test is calculated its mean value, as final result.The computing formula of boiling water shrinkage is following:
WCr＝(L
0-L)/L
0*100％
Wherein
WCr: boiling water shrinkage (%)
L
0: specimen length before the boiling water treating
L: specimen length after the boiling water treating
[initial modulus]
According to ASTM D2256-2002 single thread method measuring to the yarn tensile property; On pulling force-extension curve; Find the greatest gradient point, then on stretching-extension curve from the point of contact to tangent line of elastic limit point picture, tangent line will be through zero passage active force axle; According to the image measurement pulling force of power and the size of corresponding percentage elongation, calculate the initial modulus of sample with formula:
J
0＝(F×100)/(ε
P×T)
In the formula: J
0-initial modulus, the cN/dtex of unit (gf/den);
F-is by the size of tangent line deterministic force, and the cN of unit (gf, 1bf);
ε
P-by the corresponding percentage elongation of tangent line deterministic force, %;
The T-linear density, the dtex of unit (den).
[aging intensity conservation rate]
Aging intensity conservation rate (%)=(TENSILE STRENGTH before aging-aging after-drawing intensity) * 100%/aging preceding TENSILE STRENGTH
Burin-in process comprises: heat ageing and hydrothermal aging.
Heat ageing: be placed on the air bag base cloth, temperature is in 107 ℃ the drying box, to carry out 408 hours processing.
Hydrothermal aging: be placed on the air bag base cloth, temperature is 70 ℃, and humidity is in 95% the warm and humid hot case of height, 408 hours processing.
[hundred meters deviation of weights]
According to the testing standard of JIS L-1017, use the thread yarn horizontal metroscope 100 circle samples of reeling, every circle length is 1 meter, rotating speed is 120rpm, then sample is taken off knotting, puts into the weight that baking oven carries out obtaining after the dried this sample then.Get 10 samples continuously, calculate the deviation of weight of these 10 samples, the gained result is as hundred meters deviation of weights of this painted silk.
Embodiment 1
Mixing 3% is the black colorant section of body with the polyamide 66 in the polyamide 66 polymer chips; Reel through melt spinning, roller draft, bobbin then; Obtaining fiber number and be 470dtex, monofilament radical and be 72, tensile strength is that 37.7N, elongation at break are 20.8% the painted silk of polyamide 66; With the painted silk that obtains adopt 5 with common air bag with polyamide 66 long filament (fiber number is that 470dtex, monofilament radical are that 72, tensile strength are that 38.7N, elongation at break are 21.3%) carry out warping, and spool; After using water jet looms to weave the formation plain cloth; And under 80 ℃ of conditions, carrying out dried, the air bag that makes warp count and be 53 pieces/inch, weft count and be 53 pieces/inch is used fabric.Estimate the characteristic of this fabric, and be shown in Table 1.
Embodiment 2
Mixing 5% is the black colorant section of body with the polyamide 66 in the polyamide 66 polymer chips; Reel through melt spinning, roller draft, bobbin then; Obtaining fiber number and be 470dtex, monofilament radical and be 136, tensile strength is that 38.3N, elongation at break are 22.7% the painted silk of polyamide 66; With the painted silk that obtains adopt 10 with common air bag with polyamide 66 long filament (fiber number is that 470dtex, monofilament radical are that 136, tensile strength are that 39.8N, elongation at break are 23.3%) carry out warping, and spool; After using water jet looms to weave the formation plain cloth; And under 80 ℃ of conditions, carrying out dried, the air bag that makes warp count and be 53 pieces/inch, weft count and be 53 pieces/inch is used fabric.Estimate the characteristic of this fabric, and be shown in Table 1.
Embodiment 3
Mixing 3% is the red colored section of body with the polyamide 66 in the polyamide 66 polymer chips; Reel through melt spinning, roller draft, bobbin then; Obtaining fiber number and be 350dtex, monofilament radical and be 72, tensile strength is that 27.5N, elongation at break are 21.0% the painted silk of polyamide 66; With the painted silk that obtains adopt 15 with common air bag with polyamide 66 long filament (fiber number is that 350dtex, monofilament radical are that 72, tensile strength are that 28.9N, elongation at break are 21.3%) carry out warping, and spool; After using water jet looms to weave the formation plain cloth; And under 80 ℃ of conditions, carrying out dried, the air bag that makes warp count and be 58 pieces/inch, weft count and be 58 pieces/inch is used fabric.Estimate the characteristic of this fabric, and be shown in Table 1.
Embodiment 4
Mixing 3% is the black colorant section of body with the polyamide 6 in the polyamide 6 polymer chips; Reel through melt spinning, roller draft, bobbin then; Obtaining fiber number and be 470dtex, monofilament radical and be 72, tensile strength is that 38.3N, elongation at break are 22.8% the painted silk of polyamide 6; With the painted silk that obtains adopt 10 with common air bag with polyamide 6 long filament (fiber number is that 470dtex, monofilament radical are that 72, tensile strength are that 38.5N, elongation at break are 22.3%) carry out warping, and spool; After using water jet looms to weave the formation plain cloth; And under 80 ℃ of conditions, carrying out dried, the air bag that makes warp count and be 53 pieces/inch, weft count and be 53 pieces/inch is used fabric.Estimate the characteristic of this fabric, and be shown in Table 1.
Comparative example 1
With the polyamide 66 polymer chips; Reel through melt spinning, roller draft, bobbin, obtaining fiber number and be 470dtex, monofilament radical and be 72, tensile strength is that 38.6N, elongation at break are 21.8% polyamide 66 long filament, and this long filament is used long filament as air bag; Carry out warping, and the axle; After using water jet looms to weave to form plain cloth, and under 80 ℃ of conditions, carry out dried, the air bag that makes warp count and be 53 pieces/inch, weft count and be 53 pieces/inch is used fabric.Estimate the characteristic of this fabric, and be shown in Table 1.
Comparative example 2
With the polyamide 66 polymer chips; Reel through melt spinning, roller draft, bobbin, obtaining fiber number and be 470dtex, monofilament radical and be 136, tensile strength is that 39.3N, elongation at break are 23.8% polyamide 66 long filament, and this long filament is used long filament as air bag; Carry out warping, and the axle; After using water jet looms to weave to form plain cloth, and under 80 ℃ of conditions, carry out dried, the air bag that makes warp count and be 53 pieces/inch, weft count and be 53 pieces/inch is used fabric.Estimate the characteristic of this fabric, and be shown in Table 1.
Comparative example 3
With the polyamide 66 polymer chips; Reel through melt spinning, roller draft, bobbin, obtaining fiber number and be 350dtex, monofilament radical and be 72, tensile strength is that 29.1N, elongation at break are 20.3% polyamide 66 long filament, and this long filament is used long filament as air bag; Carry out warping, and the axle; After using water jet looms to weave to form plain cloth, and under 80 ℃ of conditions, carry out dried, the air bag that makes warp count and be 58 pieces/inch, weft count and be 58 pieces/inch is used fabric.Estimate the characteristic of this fabric, and be shown in Table 1.
Table 1
Zero: good *: poor
Claims (7)
1. an air bag is with the painted silk of high-tenacity, and it is characterized in that: the component of polymer that forms this painted silk is a polyamide, and the addition of the polymer chips of this painted silk is 2～10%, and tensile break strength is more than 7.6cN/dtex.
2. air bag according to claim 1 is with the painted silk of high-tenacity, and it is characterized in that: the tension fracture elongation rate of this painted silk is more than 20%.
3. air bag according to claim 1 and 2 is characterized in that with the painted silk of high-tenacity: this painted silk size wherein contains 60～196 monofilament in this painted silk between 300～900dtex.
4. air bag according to claim 1 and 2 is with the painted silk of high-tenacity, and it is characterized in that: the boiling water shrinkage of this painted silk is between 6～10%.
5. air bag according to claim 1 and 2 is with the painted silk of high-tenacity, and it is characterized in that: the initial modulus of this painted silk is more than 25cN/dtex.
6. air bag according to claim 1 and 2 is with the painted silk of high-tenacity, and it is characterized in that: the aging intensity conservation rate of this painted silk is more than 80%.
7. air bag according to claim 1 and 2 is with the painted silk of high-tenacity, and it is characterized in that: hundred meters deviation of weights of this painted silk are below 0.1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010292882.5A CN102409423B (en) | 2010-09-19 | 2010-09-19 | High-strength tinted filament for air bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010292882.5A CN102409423B (en) | 2010-09-19 | 2010-09-19 | High-strength tinted filament for air bag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102409423A true CN102409423A (en) | 2012-04-11 |
| CN102409423B CN102409423B (en) | 2015-07-08 |
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ID=45911753
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010292882.5A Expired - Fee Related CN102409423B (en) | 2010-09-19 | 2010-09-19 | High-strength tinted filament for air bag |
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|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243414A (en) * | 2013-03-25 | 2013-08-14 | 辽阳市和源化纤有限公司 | Method for preparing nylon 66 colored and low-denier industrial yarns |
| CN111172601A (en) * | 2019-12-31 | 2020-05-19 | 神马实业股份有限公司 | Continuous production method of polyamide color yarn |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003336126A (en) * | 2002-05-16 | 2003-11-28 | Toyobo Co Ltd | High-tenacity dope-dyed polyamide yarn for air bag |
| JP2004100109A (en) * | 2002-09-11 | 2004-04-02 | Toyobo Co Ltd | High-density woven fabric for air bag |
| CN101142348A (en) * | 2005-03-09 | 2008-03-12 | 可乐丽股份有限公司 | Colored polyamide fiber and process for producing the same |
-
2010
- 2010-09-19 CN CN201010292882.5A patent/CN102409423B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003336126A (en) * | 2002-05-16 | 2003-11-28 | Toyobo Co Ltd | High-tenacity dope-dyed polyamide yarn for air bag |
| JP2004100109A (en) * | 2002-09-11 | 2004-04-02 | Toyobo Co Ltd | High-density woven fabric for air bag |
| CN101142348A (en) * | 2005-03-09 | 2008-03-12 | 可乐丽股份有限公司 | Colored polyamide fiber and process for producing the same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243414A (en) * | 2013-03-25 | 2013-08-14 | 辽阳市和源化纤有限公司 | Method for preparing nylon 66 colored and low-denier industrial yarns |
| CN103243414B (en) * | 2013-03-25 | 2016-08-03 | 辽阳市和源化纤有限公司 | A kind of preparation method of the coloured low denier industrial yarn of chinlon 66 |
| CN111172601A (en) * | 2019-12-31 | 2020-05-19 | 神马实业股份有限公司 | Continuous production method of polyamide color yarn |
| CN111172601B (en) * | 2019-12-31 | 2021-09-24 | 神马实业股份有限公司 | Continuous production method of polyamide color yarn |
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| Publication number | Publication date |
|---|---|
| CN102409423B (en) | 2015-07-08 |
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Granted publication date: 20150708 Termination date: 20180919 |