CN103321052A - Coated fabric for safety airbag and production method thereof - Google Patents
Coated fabric for safety airbag and production method thereof Download PDFInfo
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- CN103321052A CN103321052A CN 201210079670 CN201210079670A CN103321052A CN 103321052 A CN103321052 A CN 103321052A CN 201210079670 CN201210079670 CN 201210079670 CN 201210079670 A CN201210079670 A CN 201210079670A CN 103321052 A CN103321052 A CN 103321052A
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Abstract
The invention discloses a coated fabric for a safety airbag. Filaments forming the fabric are nylon 66 filaments with round cross sections and the fineness of 280 to 420 dtex, the tensile strength of the filaments is 9.5 cN/dtex or more, and the fabric has a layer of resin with the coating amount of 5 to 10 g/m<2>. The coated fabric for the safety airbag has the advantages of light weight, high tensile strength, good flame resistance and low air permeability, and at the same time, a production method of the fabric has the characteristics of simple process, easy weaving and low cost.
Description
Technical field
The present invention relates to a kind of air bag coating fabric and production method thereof.
Background technology
Air bag has become in automobile industry and the matching used basic security configuration of car belt at present as the device of a kind of effective protection driver and conductor's life security when car crass occurs.Day by day busy along with traffic, and more and more higher to the security requirement of automobile, the part vehicle has begun to be equipped with a plurality of air bags, and is therefore more and more higher to the requirement of air bag module miniaturization.
As disclosing a kind of foundation fabric for gas bag among the Chinese patent CN1603174A, by the use of flat filament, can satisfy lightweight, have also excellent characteristics of low aeration and economy.But entanglement easily occurs when weaving flat filament departs from, thereby so that the slippage resistance of fabric reduces, cause air bag in opening procedure, to make the gas leakage at position, affect air bag inflation pressure retention upon deployment, and the cost ratio circular cross-section silk of flat filament is expensive, causes production cost to increase.
Among the Chinese patent CN101033569A a kind of safe air bag fabric and production method are disclosed and for example, use by calendering technique, can satisfy high slippage resistance, low air permeability, frivolous characteristics, but calendering technique can cause the gas cell fabric hardening, just softness rises, tears powerful the reduction.
Summary of the invention
The object of the present invention is to provide that a kind of light weight, TENSILE STRENGTH are high, good flame resistance, air permeability is low, production cost is low air bag coating fabric and production method thereof.
Technical solution of the present invention is as follows: air bag coating fabric of the present invention, the long filament that forms this fabric is circular cross-section nylon 66 long filaments of fiber number between 280～420dtex, the TENSILE STRENGTH of described long filament is more than the 9.5cN/dtex, and one deck coating amount is arranged on this fabric is 5～10g/m
2Resin.When if the fiber number of nylon 66 long filaments is lower than 280dtex, because long filament is too thin, the brute force of the textile for air sacs that makes with this long filament can't reach requirement, can cause air bag breaking and lost efficacy in opening procedure, and driver and conductor's life is threatened; When if the fiber number of nylon 66 long filaments is higher than 420dtex, can reach requirement though make the brute force of textile for air sacs, this fabric is thick and heavy, does not reach enough lightweights, affects the miniaturization of air bag module.Consider in the situation that keeps equal tensile strength and can select thinner nylon 66 long filaments, realize lightweight, adopting TENSILE STRENGTH is the above long filament of 9.5cN/dtex.It is 5～10g/m that the coating amount is arranged on this fabric
2Resin can guarantee in the situation to performance impact minimums such as the grammes per square metre of gas cell fabric, thickness, taking in property, to greatly reduce the gas permeability of textile for air sacs.
Air bag coating fabric of the present invention, above-mentioned resin are the silicone resin that contains fire retardant.Usually the air bag uncoated fabric is according to FMVSS 302 fire-retardant determination method test flammabilities, and do not burn this moment.And through after the silicone coating processing, because the accumulation of combustion process floating coat face heat can cause the combustibility of fabric and burning velocity to be accelerated.So the present invention is by adding the flammability that fire retardant realizes reducing coated fabric in silicone resin.
Air bag coating fabric of the present invention, above-mentioned fire retardant are the brominated epoxy resin based flame retardant, and the brominated epoxy resin based flame retardant is decabromodiphenyl ether resin, pentabromophenol resin or tribromphenol resin fire retardant, preferred decabromodiphenyl oxide resin fire retardant.The content of above-mentioned brominated epoxy resin based flame retardant in silicone resin is 10～20%, if add phosphorus flame retardant commonly used in the silicone resin, its addition must just can play fire retardation greater than 20% so, and the good flame retardation effect of brominated epoxy resin based flame retardant of the present invention, addition are few, avoid the interpolation of a large amount of fire retardants and caused the decline of mechanical performance and silicone resin and the fabric adhesion of silicone resin, but also saved cost, the preferred content of brominated epoxy resin based flame retardant in silicone resin is 15～20%.
Air bag coating fabric of the present invention, the taking in property of this coated fabric are 1500cm
3Below.When taking in property is 1500cm
3When following, the module of using this gas cell fabric to obtain can realize miniaturization, the conveniently installation at each position in automobile.
Air bag coating fabric of the present invention, the grammes per square metre of this coated fabric are 180g/m
2Below.Realize by the coating amount that reduces gas cell fabric, when the grammes per square metre of coated fabric is 180g/m
2When following, the taking in property of the air bag coating fabric that obtains is less.
Air bag coating fabric of the present invention, the flammability of this coated fabric are below the 35mm/min, greatly reduce the risk of coated fabric catching fire.
The production method of air bag coating fabric of the present invention, the employing fiber number is that 280～420dtex, TENSILE STRENGTH are above circular cross-section nylon 66 long filaments of 9.5cN/dtex, then weave processing, make fabric, applying one deck coating amount at fabric again is 5～10g/m
2Resin, dry heat typing obtains finished product at last.
Coating process of the present invention adopts the floating scraper method that one side of fabric is applied, and scrapes the skill in using a kitchen knife in cookery etc. with roll-type and compares, and the floating scraper method can guarantee the uniformity of coating amount, and in the situation that in minimum coating amount, has reduced the damage of scraper to fabric face.
The production method of air bag coating fabric of the present invention, carrying out the dry heat setting temperature after the coating and be 160～190 ℃, time is 1～3min.Cross low dry heat setting temperature and time can reduce silicone resin and fabric in conjunction with effect, too high dry heat setting temperature and time can cause the mechanical performance of gas cell fabric to descend, and the dry heat setting temperature is preferably 180～190 ℃, preferred 1～2min of time.
Air bag coating fabric of the present invention has that quality is light, TENSILE STRENGTH is high, good flame resistance, characteristics that air permeability is low, the method for producing simultaneously this fabric have technique simple, weave easily, characteristics that cost is low.
The specific embodiment
By following examples and comparative example the present invention is described in further detail, the method for testing of each physical property is as follows among the present invention.
[TENSILE STRENGTH of long filament]
Measure according to JIS L1017 testing standard, concrete method of testing is as follows: long filament is sandwiched in the tension test instrument jaws, and give the pre-tension of this long filament 0.4% * 50N, the jaws distance of tension test instrument is 25cm, tests with the test speed of 30cm/min.
[taking in property]
Measure according to ASTM D6478 testing standard, fabric through after folding, put into the standard holder and obtained its compression curve, read respectively that loading is 20N on the compression curve, 40N, 60N, 80N, 100N, 120N, 140N, 160N, the thickness of base cloth during 180N calculates the value of taking in property according to following formula:
Taking in property (cm
3The summation of the corresponding thickness of)=each loading * 100 * 150/1000.
[flammability]
According to FMVSS 302 difficult combustion assay methods, test obtains the burning velocity of sample.
[gas permeability]
Under the test pressure of 19.6KPa, the test per minute is the air mass flow of the circular test surfaces of 10cm by diameter, is the high-pressure process gas permeability of fabric.
Embodiment 1
The employing fiber number is that 280dtex, monofilament radical are that 96f, TENSILE STRENGTH are circular cross-section nylon 66 long filaments of 9.6cN/dtex, weave by water jet looms, making through, latitudinal density all is the plain cloth of 68/inch, adopt again the floating scraper method to apply the silicone resin that one deck contains the pentabromophenol resin fire retardant in above-mentioned fabrics, wherein the content of pentabromophenol resin fire retardant is 13%, through behind 180 ℃, the typing of the dry heat of 1min, obtaining at last the coating amount is 5g/m
2Air bag coating fabric, each physical property of this coated fabric is shown in Table 1.
Embodiment 2
The employing fiber number is 280dtex, the monofilament radical is that 96f, TENSILE STRENGTH are circular cross-section nylon 66 long filaments of 9.6cN/dtex, weave by water jet looms, making through, latitudinal density all is the plain cloth of 68/inch, adopt again the floating scraper method to apply the silicone resin that one deck contains the decabromodiphenyl oxide resin fire retardant in above-mentioned fabrics, wherein the content of decabromodiphenyl oxide resin fire retardant is 16%, and through behind 190 ℃, the typing of the dry heat of 1min, obtaining at last the coating amount is 10g/m
2Air bag coating fabric, each physical property of this coated fabric is shown in Table 1.
Embodiment 3
The employing fiber number is 310dtex, the monofilament radical is that 136f, TENSILE STRENGTH are circular cross-section nylon 66 long filaments of 9.5cN/dtex, weave by water jet looms, making through, latitudinal density all is the plain cloth of 62/inch, adopt again the floating scraper method to apply the silicone resin that one deck contains the pentabromophenol resin fire retardant in above-mentioned fabrics, wherein the content of pentabromophenol resin fire retardant is 15%, and through behind 180 ℃, the typing of the dry heat of 1min, obtaining at last the coating amount is 5g/m
2Air bag coating fabric, each physical property of this coated fabric is shown in Table 1.
Embodiment 4
The employing fiber number is 310dtex, the monofilament radical is that 136f, TENSILE STRENGTH are circular cross-section nylon 66 long filaments of 9.5cN/dtex, weave by water jet looms, making through, latitudinal density all is the plain cloth of 62/inch, adopt again the floating scraper method to apply the silicone resin that one deck contains the decabromodiphenyl oxide resin fire retardant in above-mentioned fabrics, wherein the content of decabromodiphenyl oxide resin fire retardant is 15%, and through behind 190 ℃, the typing of the dry heat of 1min, obtaining at last the coating amount is 10g/m
2Air bag coating fabric, each physical property of this coated fabric is shown in Table 1.
Embodiment 5
The employing fiber number is 420dtex, the monofilament radical is that 136f, TENSILE STRENGTH are circular cross-section nylon 66 long filaments of 9.6cN/dtex, weave by water jet looms, making through, latitudinal density all is the plain cloth of 46/inch, adopt again the floating scraper method to apply the silicone resin that one deck contains the decabromodiphenyl oxide resin fire retardant in above-mentioned fabrics, wherein the content of decabromodiphenyl oxide resin fire retardant is 14%, and through behind 190 ℃, the typing of the dry heat of 1min, obtaining at last the coating amount is 5g/m
2Air bag coating fabric, each physical property of this coated fabric is shown in Table 1.
Comparative example 1
The employing fiber number is 470dtex, the monofilament radical is that 136f, TENSILE STRENGTH are circular cross-section nylon 66 long filaments of 8.4cN/dtex, weave by water jet looms, making through, latitudinal density all is the plain cloth of 46/inch, adopt again the floating scraper method to apply the silicone resin that one deck contains the decabromodiphenyl oxide resin fire retardant in above-mentioned fabrics, wherein the content of decabromodiphenyl oxide resin fire retardant is 15%, and through behind 180 ℃, the typing of the dry heat of 1min, obtaining at last the coating amount is 5g/m
2Air bag coating fabric, each physical property of this coated fabric is shown in Table 1.
Comparative example 2
The employing fiber number is 420dtex, the monofilament radical is that 136f, TENSILE STRENGTH are circular cross-section nylon 66 long filaments of 9.6cN/dtex, weave by water jet looms, making through, latitudinal density all is the plain cloth of 51/inch, adopt again the floating scraper method to apply the silicone resin that one deck contains the decabromodiphenyl oxide resin fire retardant in above-mentioned fabrics, wherein the content of decabromodiphenyl oxide resin fire retardant is 15%, and through behind 190 ℃, the typing of the dry heat of 1min, obtaining at last the coating amount is 20g/m
2Air bag coating fabric, each physical property of this coated fabric is shown in Table 1.
Comparative example 3
The employing fiber number is 315dtex, the monofilament radical is that 136f, TENSILE STRENGTH are circular cross-section nylon 66 long filaments of 8.6cN/dtex, weave by water jet looms, making through, latitudinal density all is the plain cloth of 62/inch, adopt again the floating scraper method to apply the silicone resin that one deck contains phosphorus flame retardant in above-mentioned fabrics, wherein the content of phosphorus flame retardant is 25%, and through behind 180 ℃, the typing of the dry heat of 1min, obtaining at last the coating amount is 10g/m
2Air bag coating fabric, each physical property of this coated fabric is shown in Table 1.
Comparative example 4
The employing fiber number is 470dtex, the monofilament radical is that 136f, TENSILE STRENGTH are circular cross-section nylon 66 long filaments of 8.5cN/dtex, weave by water jet looms, making through, latitudinal density all is the plain cloth of 51/inch, adopt again the floating scraper method to apply the silicone resin that one deck contains phosphorus flame retardant in above-mentioned fabrics, wherein the content of phosphorus flame retardant is 25%, and through behind 190 ℃, the typing of the dry heat of 1min, obtaining at last the coating amount is 15g/m
2Air bag coating fabric, each physical property of this coated fabric is shown in Table 1.
Claims (10)
1. air bag coating fabric, it is characterized in that: the long filament that forms this fabric is circular cross-section nylon 66 long filaments of fiber number between 280～420dtex, the TENSILE STRENGTH of described long filament is more than the 9.5cN/dtex, and one deck coating amount is arranged on this fabric is 5～10g/m
2Resin.
2. air bag coating fabric according to claim 1, it is characterized in that: described resin is the silicone resin that contains fire retardant.
3. air bag coating fabric according to claim 1 and 2, it is characterized in that: described fire retardant is the brominated epoxy resin based flame retardant.
4. air bag coating fabric according to claim 3, it is characterized in that: the content of described brominated epoxy resin based flame retardant in silicone resin is 10～20%.
5. air bag coating fabric according to claim 1, it is characterized in that: the taking in property of this coated fabric is 1500cm
3Below.
6. air bag coating fabric according to claim 1, it is characterized in that: the grammes per square metre of this coated fabric is 180g/m
2Below.
7. air bag coating fabric according to claim 1, it is characterized in that: the flammability of this coated fabric is below the 35mm/min.
8. the production method of an air bag coating fabric as claimed in claim 1, it is characterized in that: the employing fiber number is that 280～420dtex, TENSILE STRENGTH are above circular cross-section nylon 66 long filaments of 9.5cN/dtex, then weave processing, make fabric, applying one deck coating amount at fabric again is 5～10g/m
2Resin, dry heat typing obtains finished product at last.
9. the production method of air bag coating fabric according to claim 8 is characterized in that: adopt the floating scraper method that one side of fabric is applied.
10. it is characterized in that according to claim 8 or the production method of 9 described air bag coating fabrics: described dry heat setting temperature is that 160～190 ℃, time are 1～3min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210079670 CN103321052A (en) | 2012-03-23 | 2012-03-23 | Coated fabric for safety airbag and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210079670 CN103321052A (en) | 2012-03-23 | 2012-03-23 | Coated fabric for safety airbag and production method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN103321052A true CN103321052A (en) | 2013-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210079670 Pending CN103321052A (en) | 2012-03-23 | 2012-03-23 | Coated fabric for safety airbag and production method thereof |
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| Country | Link |
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| CN (1) | CN103321052A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105256597A (en) * | 2015-10-20 | 2016-01-20 | 东华大学 | Airbag fabric with low coating amount and preparation method of airbag fabric |
| CN109667153A (en) * | 2018-11-16 | 2019-04-23 | 南通如日纺织有限公司 | A kind of fabric anti-flaming dope and the flame retardant fabric using the anti-flaming dope |
-
2012
- 2012-03-23 CN CN 201210079670 patent/CN103321052A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105256597A (en) * | 2015-10-20 | 2016-01-20 | 东华大学 | Airbag fabric with low coating amount and preparation method of airbag fabric |
| CN109667153A (en) * | 2018-11-16 | 2019-04-23 | 南通如日纺织有限公司 | A kind of fabric anti-flaming dope and the flame retardant fabric using the anti-flaming dope |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130925 |