CN86106246A

CN86106246A - The improvement of fire-resisting material

Info

Publication number: CN86106246A
Application number: CN198686106246A
Authority: CN
Inventors: 扎科布斯·马里茨·万·多特
Original assignee: TENKAT FULL FIBRE CO
Current assignee: TENKAT FULL FIBRE CO
Priority date: 1985-08-13
Filing date: 1986-09-12
Publication date: 1987-05-27
Also published as: AU6192186A; EP0268586A1; ES2000391A6; GB8520318D0; PT83189A; JPS63500392A; ZA865935B; IL79689A0; GR862067B; DK177487D0; DD251579A5; DK177487A; WO1987001140A1; KR880700117A

Abstract

A kind of method that is formed up to the anti-combustion blended material of rare two kinds of anti-combustion short fiber components.This blended material exists with strip, rove, sub-thread or folded yarn, woven fabric or knitted fabric form, and a kind of component that wherein makes blended material is with respect to another component in the composite material or other all components segregation on purpose subtly, definitely or in other words.This blended material is for the usefulness of making coat, suit or all kinds of Work Clothes, and it mainly or at least in part is made of the line institute woven fabric that comprises the segregation component.

Description

The improvement of fire-resisting material

The present invention is the relevant method of making the fire-resisting material that is particularly suitable for anti-higher temperature effect.

Former thereby be exposed to people under excessive hot-fluid and the excessive temperature flame condition in order to protect chance or other, it is known utilizing vest.A major function of vest is that the protection user avoids excessively that heat and flame interaction reach the long as far as possible time, perhaps in case of emergency is reached for the time of the essential such length of the place possibility that can flee from lower and more acceptable temperature range from the zone that produces high temperature at least.Particularly, any vest health of all making every effort to protect the user is to be able to save long-time like that the personnel that are exposed to high temperature may need.

Relate under personnel's situation that may stand excessively hot and excessive temperature flame in those its intrinsic work, the personnel of army personnel, aircraft air duty or ground crew, racing driver, the personnel of the police, fire fighter and some industrial aspect for example, always certainly existed possibility continuously, these personnel may be in any case, promptly just in case a kind of contingency, or because for example enemy's premeditated attempt, and stand excessive heat and flame.In these cases, because each personnel on the line flee from attempt, but need a certain amount of time, so all will count each second.

Simultaneously, can move more freely to these personnel that to be subjected to excessively tying down of vest for a long time and not be essential.In other words, must consider wearability, promptly constitute the comfortable situation of clothing materials.In this occasion, with what come into one's own is a kind of vest material that can be made of the above fiber of one deck, this ground floor-skin must be able to provide the ability of protection or shielding heat and flame, and the second layer is used to provide one deck thermal insulation layer, and this layer hinders heat and be penetrated into the user by clothes.To consider in this, when user's clothes comprises a few cover clothes, not only comprise outside clothes (promptly it has been generally acknowledged that those clothes of vest), and the thermal insulation layer that provides can be provided the clothes that also have the user the inside to wear, because this provides to a certain degree heat insulation equally.

According to application places, promptly, must between different heat insulation integration scenarios, select according to the possibility that disaster and environmental aspect take place; Here it is must do.By whole clothes system, normally realize or provide thermal insulation layer by one or more layers fibrage that is made from the same material or a different material.

In practice; the outermost layer of vest system can be considered the most important part of vest; because this one deck is a major part of keeping out excessive heat condition effect; And and because this above-mentioned one deck not only serve as health to the user; be the screen layer of skin, and serve as the means that protection provides the thermal insulation layer of one or more layers clothes.

Verified, the fabric that is used to constitute screen layer must satisfy or reach very specific conditions.At first, this all materials must be anti-combustion.That be exactly this material when existing with the fabric state, must demonstrate limited oxygen index (L.O.I.) and be at least 26.5.In other words, when removing ignition source, this material must go out certainly (this standard was considered by L.Bebisek in the second phase 25-29 page or leaf at " textile chemistry and dyer author " the 6th volume in 1974).In addition, when material must be exposed in the high-temperature heat flux, this material must keep as a continuous surface through the long as far as possible time.

The material that the flame resistance energy can be provided many suggestions have been proposed.For example advised fibrous material natural or regeneration.These fibers comprise, for example cotton, wool, viscose and/or protein fibre, and these fibers had been handled to reduce combustibility when the fabric state.

Advise that by mix feasible normally inflammable regeneration or the synthetic fiber of anti-combustion additive therein at production period, for example viscose, polyester, acrylic fibers become not flammable.Also advised making staple fibre by polymer class, these fibers are anti-the combustion in essence.These staple fibres comprise polyvinyl chloride, polyimides, polyamide-imines, polytetrafluoroethylene (PTFE), polyacrylonitrile and poly etc.

For convenience's sake, claim that in this manual common flame-resistant fibre is the FR-fiber.

The other group of fibers that with the material is feature is as follows:

Polybenzimidazoles (U.S.'s Celanese (acetate fiber) PBI-fiber); PPTA (so-called Du Pont de Nemours KEVLAR fiber and Enka BV.TWARON fiber); Acrylic fiber (the Courtaulds Ltd of interlinkage polyacrylic acid (INIDEX of Britain Courtaulds Co., Ltd) and some heat treatment/cyclisation, Sigri Electrographit GmbH, the carbon fibre of Stackpole Carbon Corporation and other company) be proposed as fiber with flame resistance energy.This will be called the R-fiber below group material.

Have been found that common spun yarn and the FR-fiber when being made into fabric, when being exposed to flame and high temperature, damage significantly or show high temperature Shou Suo And " breaking " fast.Also have been found that, usually the R-fiber is when the fabric state, can resist high hot-fluid through considerable time, have much smaller thermal contraction and do not have " breaking " or make " breaking " Yan Chi And keep its compliance, have certain intensity level simultaneously, can stand under similarity condition, to compare the much longer time of FR-fiber that is provided.

Have tangible improvement performance although compare the R-fiber with the FR-fiber, the R-fiber is not also generally adopted as vest, because find, the R-fiber has some performances, and these performances cause limiting the R-fiber and are used for woven vest fabric.

Use some resistance of R-fiber to be based on bad stainability and intrinsic in some cases fresh colour and bad disadvantageous performances such as fastness to light.Also have, some mechanical performance is not best as ABRASION RESISTANCE concerning the daily fabric that wears.

At United States Patent (USP) NO4, advise in 198,494, in order to make the fiber that vest is used, provide a kind of FR-fiber of meltability and the even blended yarn of R-fiber.In this US Patent specification, advised a kind of FR/R-fiber blend yarn of meltability, comprise 15%FR-fiber and 3%R-fiber at least.In this blended yarn, preferential segregation can not take place in independent fiber in any specific blended yarn regional extent, and with different as producing segregation according to the result of the normal deviate in the Fiber Distribution of pure statistics expection.Find that the fabric that is made into by this blended yarn is being exposed to 8.4J/cm ²S(is 2Cal/cm ²S) hot-fluid in 10 second time (following usefulness " burning condition " expression) synergy relevant with fracture strength is provided.Employed term " synergy " meaning is when in that " intensity of the fabric that is made of this blended yarn during burning condition is higher than when " burning condition " summation by the independent component intensity distributions of this fabric significantly in United States Patent (USP).

At United States Patent (USP) NO4, in 198,494 also suggestion provide a kind of combustion test of improvement with test FR and R-fiber (the 2nd hurdle 56-60 is capable and the 3rd hurdle 4-31 is capable).Used this test to study between large-scale fiber the intensity that fusing and so-called combustion intensity are used as fabric when " burning condition ".

Find that this test lacks accuracy and repeatability when measuring combustion intensity.Particularly when testing very light fiber picture at above-mentioned United States Patent (USP) (the 3rd hurdle 56-58 is capable) example 1 described " residue " fabric.Suddenly add 2Cal/cm by means of the Meker burner ²(8.4J/cm.S) hot-fluid is Tu Ran And and too strong too, and the powder of burning has damaged mensuration.

The purpose of this invention is to provide a kind of improved fire-resisting material.

Put it briefly, according to an aspect of the present invention, a kind of method that is formed up to the anti-combustion blended material that rare two kinds of staple fibres become to be grouped into is provided, this blended material exists with the form of strip, rove, sub-thread or folded yarn or woven fabric or knitted fabric, be characterised in that, make wherein a kind of component with respect to another component in the blended material or the other all components method of segregation on purpose subtly, definitely or in other words.

According to a further aspect in the invention, a kind of rare two kinds of methods that the anti-combustion that resists the combustion staple fibres to become to be grouped into mixes yarn material that are formed up to are provided, this blended material exists with the form of strip, rove, sub-thread or folded yarn or woven fabric or knitted fabric, be characterised in that, make wherein a kind of component with respect to another component in the blended material or the other all components method of segregation on purpose subtly, definitely or in other words, make following alleged " heat resistanceheat resistant performance " play synergistic effect with respect to the respective performances of independent component.

Best, make up these components by this way, warp and weft direction at fabric when making described composite material be the woven fabric form comprise the anti-combustion yarn that contains described a kind of component, described anti-combustion yarn is that the distance of 20 times of fabric thicknesses is spaced apart by maximum.

Still according to another suggestion of the present invention, a kind of fire-Resistant Fabric is provided, this fabric comprises the line that mixes a kind of anti-combustion blended material, this material is made up of two kinds of short fiber components with sub-thread or folded yarn form at least, wherein the line of at least some spun yarns is characterised in that, at least a component makes it with respect to another component in the blended material or other all components segregation subtly, definitely or on purpose.

Brief description of drawings

Fig. 1 is a very indirect introduction of signal to equipment, and these equipment are to be used for implementation evaluation particularly to advise the test that those prepared fire-resisting material performances are proposed by the present invention.

Fig. 2 is the schematic side view of Fig. 1 equipment.

Fig. 3 and Fig. 4 are the curve maps of expression the present invention and prior art material set quota correlation.

With reference to Fig. 1 and Fig. 2 of relating to equipment, these equipment are engaged in a kind of test accurately, and this test is proposed to be used in estimates the heat resistance material performance.Whether this test is developed, because be that a kind of tolerance to " the heat resistanceheat resistant performance " of the fabric that uses as screen layer exists query about the description of United States Patent (USP) to the mensuration of " combustion intensity ".Term " heat resistanceheat resistant performance " will take in below in detail.

From the realistic view point, consider that people still can flee from from the area of described generation high temperature, suggestion is reduced to fuel oil conflagration temperature range (3.2J/cm with hot-fluid ²S) half of lower limit.In this suggestion, use the width of cloth of 500 watts of quartz ampoules to penetrate the advection heat (not shown) that heat replaces the Meker burner.The electric current of supplying with this quartz ampoule can change to reach 3.2J/cm by the transformer (not shown) ²The hot-fluid of s.As can seeing by accompanying

drawing

1,4 the test webbings of indicating by schematic diagram 2 with one 20 mm wide be suspended on the bonding jumper 3 Shang Mian ， And that are positioned at quartz ampoule 1 top away from the scope of quartz ampoule 1 till on-test.Webbing 26 bears a standard pouring weight 8 by a grip device 7 in its underpart, and this pouring weight is 20 grams in this method suggestion.By install 5 can with the device 7 tangle so that fabric away from quartz ampoule 1.As pointed by Fig. 1 and Fig. 2, webbing 2 is only around the part of quartz ampoule.In fact, requiring this band to should be 7 millimeters around the length 9 of the string of roller segment, should be the length that contacts between fabric and the quartz ampoule around the back of roller segment.Pointed out this point among Fig. 2.

In United States Patent (USP), measure " combustion intensity " (the 3rd hurdle 21-27 is capable) by using for 10 fixed combustion times in second and making webbing bear Different Weight.Suggestion use quartz ampoule 1 and fixedly pouring weight 8 to measure before fabric can not continue to bear fixedly pouring weight the time of the suffered hot-fluid of fabric (certain required time is exactly the validity feature with the heat flow of Joulemeter).

After this, the device (equipment) 5 that shields and tangle webbing breaks away from the quartz ampoule zone that can return.Webbing 2 will be swung bump quartz ampoule, 1.4cm ²The zone will contact the zone of above-mentioned chord length 9 that Here it is with quartz ampoule 1.As a result, webbing 2 will be exposed in the hot-fluid of 4.5J/S.A timer is set falls the required time with the pouring weight 8 that measurement webbing 2 bears.

By using the heat resistanceheat resistant performance test advised, can calculate heat flow that fabric can withstand " heat resistanceheat resistant performance " as fabric.

This heat flow of representing with joule can be divided by total tex(denier of the whole yarns that move on vertical (test) direction) to calculate " the heat resistanceheat resistant performance " that the test fabric is represented with millijoule (mJ)/dtex (dtex).

The heat resistanceheat resistant performance test determination time of being advised as mentioned above.This time is very important when escaping high temperature and flame.Because can leave the heat and the distance in flame place according to a people, all be important each second, so each second and every increase just increase the possibility of lifesaving one second.

Whether qualified in order to measure a kind of fiber as R-fibre fractionation of the present invention, the fabric that is made of this fiber can be stood above-mentioned test.If " heat resistanceheat resistant performance " is at least 15mJ/dtex, then can consider this fiber as the R-fiber.

In above-mentioned United States Patent (USP) (the 5th hurdle 61 walks to the 6th hurdle 4 row), mentioned and in synergism performance research, prepared following test fabric:

The various even blended material of preparation FR and R-fiber.

The FR component is that fibre length is that 40 millimeters (1.6 inch) and fibre fineness are aromatic polyamides between 1.7 dtexs (decitex) (1.5 filament deniers (dpf)) (phenyl-diformyl p-phenylenediamine (PPD) Polymetaphenyleisophthalamide between poly-) fiber (APyEIL of Japanese UNITIKA Ltd).

The R-fibre fractionation be by du pont company Zhi Zao And with " KEVLAR " trade name sell to aromatic polyamides PPTA Polyparaphenyleneterephtalamide) fiber.Fibre length is 38 millimeters (1.5 inch), and fibre fineness is 1.7 dtexs (decitex) (1.5 filament deniers (dpf)).With fibers form these Xian dimension Hun He And of difference amount is spun into 49 spies (tex) single thread (12c.c).After removing slurry and impurity (destarch) with these yarns be made into about 21 * 21 lines/centimetre plain cloth.The basis weight range of these fabrics is a 227-241 gram/rice ²(6.7-7.1 oz/yd ²).

" heat resistanceheat resistant performance " And that measures these fabrics is shown in table 1.The curve A of Fig. 3 is represented the even blended data of table 1.

Table 1

Form heat resistanceheat resistant performance synergy

(%FR/%R) (mJ/dtex) compares with the 100%R-fiber

10,0/0 0.9 is negative

95/5 24.6 45%

90/10 23.5 38%

80/20 21.3 25%

67/33 20.5 20%

0/100 17.0 0%

Be important to note that the combustion intensity measurement result of being mentioned in these indexes and the United States Patent (USP) is different.According to " combustion intensity " index of United States Patent (USP), " the heat resistanceheat resistant performance " of 100% pair of nylon (KEVLAR) is more much higher than 100% aramid fibre.Be that 17.0mJ/dtex compares 0.9mJ/dtex.

In order better to understand the data of table 1, should be noted that actually according to the time of fleeing from, these indexes (for these fabrics) are equivalent to 78 seconds rupture times and 4 seconds rupture times.These indexes have also been represented the mutual synergistic effect between the fabric in even blended yarn.

This point is that the combustion intensity index of not expecting De And and United States Patent (USP) fully forms contrast.

Can see synergy used on the meaning of the present invention as " the heat resistanceheat resistant performance " of even mixed goods and the fabric of 100%R-fiber by table 1, i.e. " the heat resistanceheat resistant performance " of the fabric that is made into by 100% best component in the two kinds of components relation of comparing." the heat resistanceheat resistant performance " of all even blended fiber all is higher than 100% pair of aramid fibre.As can be seen, along with the reduction synergy to the aromatic polyamides amount increases.

The correctness about 3-20% composite rate scope that is provided in United States Patent (USP) claim (the 8th hurdle 58 row) also has been provided " the heat resistanceheat resistant performance test " accurately that worked out about the present invention.If more than 20% aromatic polyamides is mixed with an aromatic polyamides, show that the raising of synergy compares much smaller with the raising of the synergy that obtains with 20% following composite rate.This point is shown in the lower curve A of Fig. 3.

20% composite rate that United States Patent (USP) is mentioned as capable described at the 4th hurdle 63-68, is according to stainability not purely, and practical basis such as intrinsic highly colored and bad ABRASION RESISTANCE are selected.As now illustrating, 20% value is the important limit that fibre fractionation is effectively influenced.

Hurdle 56-59 is capable mentions as United States Patent (USP) the 4th, the lower bound of having selected the 3%R-fibre fractionation as the actual minimum of even blended yarn to guarantee the even distribution of R-fibre fractionation in whole blended yarn.Mixed number is lower than 3% o'clock effect and will mentions below.

Find according to the present invention, by subtly, definitely or in other words on purpose will be in the anti-combustion blended material of flame-resistant fibre contained R-fiber segregation, synergy produces unexpected the raising, and the anchoring effect of the fusible FR-fiber that this can not be mentioned by United States Patent (USP) (the 5th hurdle 1-3 is capable) is explained.Also will mention the necessity of the fiber existence that shows anchoring effect in the back.

For United States Patent (USP) and of the present invention between compare, 49 spies (tex) yarn that contains 90% aromatic polyamides (APYEIL) and 10% pair of aromatic polyamides (12C.C) is spun on the DREF friction spinning machine, wherein whole 10% KEVLAR to aromatic polyamides all be with fibers form subtly by segregation at yarn core.

With this yarn be made into 21 * 21 lines that plain cloth compares with 90/10 fabric that the even blended yarn that can mention with table 1 is provided/centimetre ²Fabric.

Table 2 shows the comparison of " heat resistanceheat resistant performance "/dtex (dtex) numerical value of fabric of the present invention " heat resistanceheat resistant performance "/dtex (dtex) numerical value and United States Patent (USP) fabric.

Below for convenience's sake, in this manual, mixed uniformly yarn is called the I-yarn and the yarn of the application's segregation is called the S-yarn.

Table 2

Mixed method heat resistanceheat resistant performance synergy

(10%R) (mJ/dtex) compares with the 100%R-fiber

Even (I) 23.5 38%

Segregation (S) 32.7 92%

As shown in table 1ly go out, " heat resistanceheat resistant performance " with I-yarn woven fabric of 10%R-fiber shows for 17mJ/dtex compares that with 100%R-fiber " heat resistanceheat resistant performance " synergy is 38.If this R-fiber be definitely, subtly or in other words be on purpose by segregation in the S-yarn core, then can obtain 92% synergy, this effect greater than the 1.5-2 of I-yarn doubly.

It is to be understood that suggestion of the present invention is not limited only to the blended material of two kinds of fibers, and comprise the blended material of various ingredients and for example use multiple FR and the R component to reach required various types of percentages.

On the DREF friction spinning machine, aromatic polyamides (FR) fiber between the APYEIL of fusion 63% Japanese UNITIKA; The non-fusible FR-fiber ， And of the anti-flaming viscose of 27% Australian LENZINGAG, is spun into 49 spies (tex) and (12C.C) props up yarn aromatic polyamides (R) fiber at the KEVLAR of yarn core segregation 10% U.S. Du pont.With this yarn after destarch, be made into again 21 * 21 lines/centimetre ²Plain cloth.

Measure the heat resistanceheat resistant performance, meter reaches 40.5mJ/dtex, and this numeral is compared with the yarn of table 2 10% R-fiber and demonstrated more improved synergy, sees Table 2A.

Table 2A

The type %R-fiber heat resistanceheat resistant performance synergy of yarn

（mJ/dtex）

RING SPINNING 100% 17.0 0

Evenly mix 10% 23.5 38%

Segregation 10% 32.7 92%

Segregation+

27% viscose glue 10% 40.5 138% of anti-combustion

With R-fiber segregation is the long filament that spins a kind of very thin fine yarn that has only the R-fiber in advance or utilize the R-fiber in the another kind of method of yarn core.By utilizing known bag core technology, can be in yarn core with the R-fiber that spins in advance or long filament segregation.

Can spin in advance with any frame that can spin very thin yarn.The bag core can be with known bag core technology, i.e. RING SPINNING; Open-end spinning; Friction frame etc. carries out.A kind of 100%KEVLAR is spun into 12 spies (tex) in advance to the very thin spun yarn of aromatic polyamides (R-fiber) and (50C.C) props up yarn.

It is that 49 spies (tex) of R-fiber (12C.C) prop up yarn that the yarn core result who above-mentioned yarn is mixed aromatic polyamides between APYEIL (FR) fiber on DREF friction frame forms 24%.Also this yarn is made into 21 * 21(root line/centimetre) plain cloth, washing is test also.

" the heat resistanceheat resistant performance " of this fabric reaches 22.5mJ/dtex, and this equals 32% synergy.

As shown in table 1, the synergy of the even blended yarn of 20%R-fiber reaches 25%, if the amount of R-fiber increases, this number reduces.So the synergy of the even blended yarn of 24%R-fiber (I-yarn) is less than 25%.The S-yarn synergy that contains the 24%R-fiber is 32%, and this numerical value Gao De Duo And proves that once more the R-fiber that mixes of segregation has improved synergy.

As shown in table 1, when the amount of R-fiber in the fabric reduced, synergy improved.The minimizing of R-fibre weight reaches by the amount that reduces R-fiber in the yarn.

The another kind of method that reduces R-fibre weight in the fabric is to use the different yarn that contains different amount R-fibers.Fabric can be mixed with the yarn of 0%R-fiber by the S-yarn of above-mentioned 24%R-fiber and make and can use this yarn successively.In other words, a kind of 24%R-fiber that contains in the fabric in two kinds of yarns, then the total amount of R-fiber is 12% in the fabric.

Therefore, the segregation of R-fiber not only can be used in the yarn, and can utilization when the weaving of fabric.This is the characteristic that the present invention advises.

Use the above-mentioned S-yarn (S) that contains the 24%R-fiber, this yarn with also on DREF friction frame, spin the yarn that contains the 0%R-fiber (FR) blending, make following 49 * 49 spies (tex) and 21 * 21(root line/centimetre) the thing And that knits after destarch, test with evaluation " heat resistanceheat resistant performance ".This performance is shown in the curve B of table 3 and Fig. 4.

Table 3

R-fiber % heat resistanceheat resistant performance synergy in the used yarn woven fabric

（mJ/dtex） %

All FR-yarn 0.0 1.3 is negative

1S+4FR-yarn 4.8 37.0 118

1R+2FR-yarn 8.0 20.0 80

Whole S-yarns 24.0 22.0 32

As can be seen, although the amount of R-fiber keeps identical (24%) in containing the specific S-yarn of R-fiber, the heat resistanceheat resistant performance of fabric still can improve when the amount of R-fiber in the fabric reduces.

Therefore, by the R-fiber segregation that will in fabric, contain yarn also can obtain by subtly with R-fiber segregation in the yarn rather than with its evenly mix the raising that obtains synergy.

Described in the table 3 in the fabric fabric thickness between the 0.51-0.52 millimeter, change.Distance in the fabric of " 1S+4FR yarn " between two kinds of S-yarns is 2.38 millimeters.

In the table 3 thickness of listed fabric 0.51 and 0.52mm between change.In the fabric that is made into by " 1S+4FR yarn ", distance is 2.38mm between two strands of S-yarns.Therefore, the spacing of S-yarn may be prescribed as 4.6 times of fabric thickness.If increase this spacing, on warp-wise and broadwise, be that the danger of the small pieces of fabrics fracture on border also increases then with the S-yarn.So the distance between two strands of yarns that contain the R-fiber is subjected to " heat resistanceheat resistant performance " and the restriction of other character of another component or all the other each components, and must not surpass 20 times of fabric thickness.

Therefore, another aspect of the present invention provides a kind of fire-Resistant Fabric, its warp thread and weft yarn comprise that on fabric warp-wise and broadwise by maximum be the anti-combustion yarn that the distance of 20 times of fabric thicknesses is separated, said anti-combustion yarn contains the R-fiber or is mixed with the R-fiber, and said R-fiber is subtly, definitely or in other words on purpose preferential already segregation in the mixed yarn component.

Just as known, single thread can be plying or bifilar.For making the R-fiber that mixes in yarn segregation subtly, the yarn more than two strands or two strands can be pooled capital, wherein have at least in a kind of yarn (comparing with other yarn component of plying with it should be very thin yarn) and contain the R-fiber.

As an example, above-mentioned yarn count is 12tex(50C.C.) 100%KEVLAR can be 37tex(16C.C. with yarn count to aromatic polyamides (R-fiber) yarn) 100%APYEIL between aromatic polyamides (FR-fiber) plying, obtaining yarn count is 49tex(12C.C.) the folded yarn blended material, wherein the R-fibre weight of meticulous segregation is 24%.

The yarn of FR-fiber also can with at least a by FR-fiber and R-fiber formed, the yarn plying of the meticulous segregation of R-fiber wherein.Preferably reduce R-fiber De Liang And and avoid spinning in advance of very thin R-silvalin.

Thereby, according to a further aspect in the invention, proposed a kind of at least by two kinds of anti-combustion short fiber component anti-combustion blended materials that form, the folded yarn form, a kind of in wherein all components be subtly, definitely or in other words purpose segregation De And is arranged and wherein have at least one contain R-fiber or FR-fiber and R-fiber, wherein the R-fiber is by the blended yarn of meticulous segregation.

(S) yarn of the above-mentioned 24%R-of containing fiber be contain (being spun in advance) yarn form contain the R-silvalin.As above shown in the table, " heat resistanceheat resistant performance " improves with the minimizing of R-fibre weight.If used pre-spinning method, then because its fineness of yarn that is spun in advance is conditional, so the low percentage of R-fiber only could be realized under low count yarn (thick yarn) situation.

The segregation of R-fiber also can be with fibers form as described in the S-yarn embodiment of table 2, and does not realize with the form that is spun in advance.As mentioned above, the S-yarn that contains 10% segregation R-fiber is spun on the DREF friction spinning machine.In this case, the R-fiber is without spinning in advance, and mixes in the yarn with fibers form.The fiber that is input to the drawing-off part in the machine has been the strip of FR-fiber and the rove of R-fiber.At draw zone, the fiber of input, i.e. strip and rove with drafted, but can keep their relative distribution.They can mixed or blending.So the R-fiber roving only can keep segregation by the thinner Xian Wei Shu And of drafted one-tenth.This system can be called another aspect that the paired system ， And of strip/rove constitutes the present invention's suggestion.

For (the most frequently used) RING SPINNING method, the paired system of this strip/rove can be used for obtaining the R-fiber of segregation in the ring spinning yarn.

When using the paired system of strip/rove as the input of Speed frames, obtain a kind of rove that contains segregation R-fiber, it will obtain containing the ring spinning yarn of segregation R-fiber after spinning on the ring spinning machine.

As known in the ring spinning technology, in the whole process that mixed with fibers or blending take place, last machine is a drawing frame.

Repeatedly 6 or 6 above strips are combined, make them become an one thread that the fiber blending has taken place and mixed once more through drafting.In the embodiment 1 of United States Patent (USP), reached even mixing with these machines (the 5th hurdle the 30th row).

If on last drawing frame, use the paired system of strip/rove, during with a R-fiber (in the process of other sliver of feeding) feeding machine, just can not take place to mix or blending.Thereby the output of the doubling winder that this is last and next machine are that the input of roving frame will be the strip that contains segregation R-fiber.After the spinning rove, the ring spinning yarn that obtains is mixed with the R-fiber of segregation on ring spinner.

Therefore, proposed a kind of paired system of strip/rove that relies on according to another aspect of the present invention the R-fiber of segregation has been mixed process in the flame-resistant fibre yarn.

If the paired system of strip/rove is used on the above-mentioned drawing frame, then when the feeding machine be 6 or 6 above FR-fiber skein and a R-fiber roving time, the amount of R-fiber can be seldom.Percentage can reach 2 or during use roving as described below even can reach below one of percentage.

If the paired system of strip/rove has to only be the machine of single strip in input, promptly Speed frames, DREF friction spinning machine etc. are gone up when using, and owing to placing restrictions on of rove fineness, the lower limit of R-fiber percentage can not be too low.

Thereby another characteristics of the present invention provide the paired system of a kind of special strip/rove, and wherein rove partly includes the non-twist fibre bundle of making by the TWISTLESS SPINNING method.

The TWISTLESS SPINNING method is at HOII P No.143, and is referred in 002:-production method of yarn and the yarn by this method production.(also has BP No.1,186,233; U.S. Patent No. 3,447,310; And Japan Patent No.805,398); Also at BP No.1,419,108-is combined into staple fibre in the process of essentially no twist yarn referred.

From in fact, these methods are formed the technology that viscose lumps together with water-soluble glue by the strip drawing-off being become thinner fibre dimension bundle And replace twisting to come reinforcing fiber bundles.

If when used glue amount reduces in the draw zone impregnable certain amount of the drawing-off of fibre bundle in these methods, non-twist " yarn " that spin by these methods can be used as rove and uses in the paired system of strip/rove.

According to statistics, in the even blended yarn of various fibers the possibility of guaranteeing the R-Fiber Distribution, i.e. the even distribution of R-fiber, composite rate possible lower limit in practice is said to be 3%, but the real in practice limit is 5%.Limiting value possible in this practice was also once mentioned in United States Patent (USP) (the 4th hurdle 56-59 is capable).Owing to two or more fibre fractionation blending, be lower than 3% And according to the number of fibre fineness and yarn even can be lower than 0.5% to guarantee the possible distributed pole limit value of R-fiber according to meticulous segregation of the present invention (so just be not even mixing).

Use aromatic polyamides between the APYEIL that UNITIKA company produces as FR-fiber and Du PONT company produce to aromatic polyamides KEVLAR as the R-fiber, be spun into 49tex(12C.C.) plain cloth of 21 * 21 line/cm of the woven one-tenth of ring spinning Dan Sha And.On last drawing frame, use the paired system of strip/rove to obtain to contain the yarn of 1,2,10 and 33% segregation R-fiber.Measure " heat resistanceheat resistant performance " And after the destarch and calculate synergy.

Table 4

Yarn type R-fiber percentage heat resistanceheat resistant performance synergy

(right-aromatic polyamides) (mJ/dtex)

100% aromatic polyamides 0% 1.3 is negative

Between/right-aromatic polyamides 1% 54.6 221%

Between/right-aromatic polyamides 2% 36.1 112%

Between/right-aromatic polyamides 10% 33.0 94%

Between/right-aromatic polyamides 33% 27.5 62%

100% pair-aromatic polyamides 100% 17.5 0%

Please note described in the table 4 between/right-aromatic polyamides is the S-yarn.

The low synergy that makes of percentage (1 and 2%) that is the R-fiber that segregation guaranteed owing to its distribution possibility obviously improves.Numeral in the table 4 is shown in the curve C of Fig. 3.

Though it is therefore the limited oxygen index of modacrylic fibre (L.O.I.) value can not burn away when removing burning things which may cause a fire disaster greater than 26.5 And,, but quite little as the protective effect of protective clothing in fire of protection or shield external layer because fabric damage is quite rapid.

S-yarn of the present invention is to be the 40mm(1.6 inch with 98% fibre length), fineness is 1.7dtex(1.5dpf) the modacrylic fibre VELICREN FRS modacrylic fibre of company (Italian SNIA SA) and 2% meticulous segregation in yarn core, fibre length is the 40mm(1.6 inch), fineness is 2.2dtex(2.0dpf) to aromatic polyamides R-fiber (PPTA) (the TWARON fiber that Dutch ENKA company produces) spinning, spinning is to use the paired Ti Xi of strip/rove And to use above-mentioned strip and roving to carry out on the DREF friction spinning machine.With 49tex(12C.C) plain cloth of the woven one-tenth 21 * 21(of the yarn root line of yarn count/cm).Also weave out the same fabric of 100%VELICRENFRS fiber and the fabric of 100%TWARON fiber.

" heat resistanceheat resistant performance " data measured and the synergy of being calculated are shown as table 5.

Table 5

The heat resistanceheat resistant performance synergy of yarn type R-fiber

Percentage (mJ/dtex)

100% pair-aromatic polyamides 100% 21.8 0%

100% modacrylic 0% 0.2 is negative

98% modacrylic 2% 25.2 15%

Though the synergy of 100% pair-aromatic poly-amide fabric with between above-mentioned containing-example of aromatic polyamides is compared so not remarkable, but with the woven fabric of modacrylic S-yarn that only contains the 2%R-fiber of the present invention, its " heat resistanceheat resistant performance " is than " heat resistanceheat resistant performance " height of 100%R-fiber.The 98/2%S-yarn of modacrylic, its heat resistanceheat resistant performance in addition equal in the table 1 between-the heat resistanceheat resistant performance of aromatic polyamides 95/5%I-yarn.

As previously mentioned, the heat resistanceheat resistant performance of low percentage R-fiber improves and can not explain according to the gummed of the A-fiber (being equivalent to organic synthesis FR-fiber of the present invention) described in the United States Patent (USP) (the 5th hurdle 1-3 is capable) theory.Necessity of organic FR-fiber of meltability distributes and is not contain meltability FR-fiber but only to contain with the fabric of non-organic FR-fiber of R-fiber cospinning by the system of knitting to study.

On the DREF friction spinning machine, following various yarns are spun into 49tex(12C.C.) FR-yarn 100% anti-flaming viscose (Austrian LENZING joint-stock company produce) S10-yarn 90% anti-flaming viscose and 10%KEVLAR(R-fiber) S2-yarn 98% anti-flaming viscose and 2%KEVLAR(R-fiber)

These yarns are distinguished the fabric of woven one-tenth 21 * 21(root line/cm) again after destarch.Measure the heat resistanceheat resistant performance, get following data as shown in table 6.

Table 6

Yarn type R-fiber percentage heat resistanceheat resistant performance synergy

（mJ/dtex）

100 17.0 0 of RING SPINNING

FR-yarn 0 4.5 is negative

S10-yarn 10 88.6 421%

S2-yarn 2 13.1 is negative

As seen, " heat resistanceheat resistant performance " with the 100%R-fiber compared, obtain enough improved synergy, the R-fiber of 2% meticulous segregation and non-organic FR-fiber blend have been very little, have presented synergy although the total value that " heat resistanceheat resistant performance " is improved to " heat resistanceheat resistant performance " that 13.1mJ/dtex contributed with single all components (4.6mJ/dtex) from 4.5mJ/dtex is compared.

If use the 10%R-fiber, synergy just has significantly significantly to be improved.Thereby, be possible owing to obtain improved synergy, so the appearance of the organic FR-fiber of meltability is just dispensable.

According to characteristics of the present invention, the R-fiber of segregation on purpose subtly, definitely or in other words, if only be used for non-organic FR-fiber blend, then its percent by weight is to be not less than 3% for good.

As previously mentioned, many suggestions about fire proofing material, its important weak point is the heat-shrinkable and the rapid disruptiveness of height.(the 3rd hurdle the 59th walks to the 4th hurdle the 50th row) proposed a kind of " fabric destructive test " in above-mentioned United States Patent (USP).This test often is referred to as thermal protection performance (T.P.P.) test now, has been used to testing by the woven fabric of the present invention, promptly fabric is placed in the hot-fluid of 8.4mJ/Cm.s to reach 10 second standard time.Shi Jizuo was not above 10 seconds if measurement is not broken up to the time of breaking or after 10 seconds.

Table 7 illustrates the burst test data of listed each even BLENDED FABRIC in the table 1.

Table 7

Form the T.P.P. test

(%FR/%R) (break)

10,0/0 3 second

95/5 above 10 seconds

90/10 above 10 seconds

80/20 above 10 seconds

67/33 above 10 seconds

0/100 above 10 seconds

By the present invention with listed various 10% segregation R-fibers in the table 2 woven fabric present rupture time (above 10 seconds) greater than 10 seconds.

Table 8

The percentage T.P.P. of R-fiber test in the used yarn woven fabric

All the FR-yarn is 0.0 4 seconds

1S+4FR yarn 4.8 surpasses 10 seconds (some flare are arranged)

1S+2FR yarn 8.0 was above 10 seconds

All S-yarn 24.0 was above 10 seconds

Observing the fabric sample top on the fabric of 4.8%R-fiber has some flare, but does not break.

Even in the table 4 the listed S-yarn that only contains 1% and 2% segregation R-fiber right-aromatic poly-amide fabric and table 5 in the listed modacrylic fabric that only contains the 2%R-fiber in 10 seconds, do not break yet.

In the table 6 shown in the following tabulation 9 of fracture characteristics of the listed viscose glue FR fabric that is mixed with 2% and 10% segregation R-fiber.

Table 9

The T.P.P. of R-fiber test in the used yarn woven fabric

Percentage (fracture)

FR-yarn 01 seconds

S10-second 10 was above 10 seconds

S2-yarn 2 was above 10 seconds

The example of fabric " heat resistanceheat resistant performance ".All fabrics all contain 49 * 49tex yarn (12 * 12C.C.) and about 21 * 21 line/cm(53 * 53 line/inch)

Material R-fiber, I/S heat resistanceheat resistant second performance

% （mJ/dtex）

Between-aromatic polyamides CONEX(Japan) 0-1.1

Between-aromatic polyamides APYEIL(Japan) 0-0.9

80/20 APYEIL/ anti-flaming viscose, 0 I 1.7

99%-aromatic polyamides APYEIL, 1 S 54.6

Polyimides P84(Austria) 0-0.6

Material R-fiber, I/S yarn heat resistanceheat resistant performance

% （mJ/dtex）

50%/50% P84/ anti-flaming viscose, 0 I 0.4

96% polyimides P84,4 S 31.8

70%/20% APYEIL/ anti-flaming viscose, 10 S 32.9

90% anti-flaming viscose, 10 S 88.6

Claims

1, a kind of formation contains the method for the anti-combustion blended material of two kinds of anti-combustion short fiber components at least, this blended material exists with the form of strip, rove, sub-thread or folded yarn, woven fabric or knitted fabric, it is characterized in that, make wherein a kind of component with respect to another component in the blended material or other all components segregation on purpose subtly, definitely or in other words.

2, the described formation of claim 1 contains the method for the woven fabric or the anti-combustion of the knitted fabric form blended material of two kinds of anti-combustion short fiber components at least, it is characterized in that defined blended material in the specification " heat resistanceheat resistant performance " is relevant in the synergy mode with the respective performances of each component.

3, the method for the anti-combustion of the described formation of claim 1 blended material is characterized in that, with described a kind of component with the rove form with carrying out with another component of strip form or other all components and closing.

4, the method for the anti-combustion of the described formation of claim 3 blended material is characterized in that the rove component is non-twist.

5, the method for the anti-combustion of claim 1,3 or 4 described formation blended material is characterized in that, each component with such method and close, is promptly contained the described a kind of component that concentrates on yarn core in the blended material of yarn form.

6, the method for the anti-combustion of the described formation of claim 1 blended material is characterized in that, with such method and close, promptly the blended material of folded yarn form has at least one to contain described a kind of component with each component.

7, the method for the anti-combustion of the described formation of claim 1 blended material is characterized in that, with such method and close, promptly has at least one to make by claim 3,4 or 5 in the blended material of folded yarn form each component.

8, the method for the anti-combustion of the described formation of claim 2 blended material, it is characterized in that, with each component with such method and close, the blended material that is the woven fabric form has the anti-combustion yarn that comprises described a kind of component on the warp-wise of fabric and broadwise, described these anti-combustion yarns at interval be 20 times of fabric thickness apart from maximum.

9, the method for the anti-combustion of the described formation of claim 2 blended material, it is characterized in that, with each component with such method and close, be the blended material of woven fabric form on fabric warp-wise and broadwise, have by in the claim 3 to 7 each and close, have at least the anti-combustion of the blended material yarn of two kinds of components, described anti-combustion yarn at interval be 20 times of fabric thickness apart from maximum.

10, the method for the anti-combustion of each described formation blended material in the claim 1 to 9 is characterized in that shown " heat resistanceheat resistant performance " (being defined in the specification) maximum of described a kind of component is 15mJ/dtex.

11, the method for the anti-combustion of each described formation blended material in the claim 1 to 10 is characterized in that described a kind of component contains Fanglun 1414 and/or formaldehyde novolac fiber and/or polybenzimidazole fiber and/or carbon fiber.

12, the method for the anti-combustion of each described formation blended material in the claim 1 to 11 is characterized in that described another component or other all components comprise the natural material and/or the synthetic material of flame treatment already.

13, the method for the flame-retarding blended material of the described formation of claim 12 is characterized in that, described another kind of component or other all components comprise wool and/or cotton and/or viscose and/or protein staple fibre.

14, the method for the anti-combustion of each described formation blended material in the claim 1 to 13 is characterized in that described another component or other all components comprise the synthetic material that is added with flame-retardant additive.

15, the method for the anti-combustion of the described formation of claim 14 blended material is characterized in that described another component or other all components comprise viscose and/or diacetate and/or triacetate and/or protein staple fibre.

16, the method for the anti-combustion of each described formation blended material in the claim 1,2,3 and 5 to 15 is characterized in that described another component or other all components comprise the synthetic/organic material that is added with flame-retardant additive.

17, the method for the anti-combustion of each described formation blended material in the claim 1 to 15 is characterized in that described another component or other all components comprise the synthetic/organic material that is added with flame-retardant additive.

18, form the method for anti-combustion blended material described in the claim 16 or 17, it is characterized in that described another component or other all components comprise polyester and/or polyamide and/or Orlon.

19, the method for the anti-combustion of each described formation blended material in the claim 1,2,3 and 5 to 16 and 18 is characterized in that described another component or other all components comprise the material of anti-combustion originally.

20, the method for the anti-combustion of each described formation blended material in the claim 1 to 18 is characterized in that described another component or other all components comprise the material of anti-combustion originally.

21, the method for the anti-combustion of claim 19 or 20 described formation blended material, it is characterized in that described another component or other all components comprise modacrylic and/or polyvinyl chloride and/or polyimides and/or polyamide-imide and/or polytetrafluoroethylene (PTFE) and/or poly and/or crosslinked polyacrylic acid.

22, the method for the anti-combustion of each described formation blended material in the claim 12 or 15 is characterized in that described its weight of a kind of component accounts for the 2-40% of blended material gross weight.

23, the method for the anti-combustion of each described formation blended material in the claim 16,18,19 or 21 is characterized in that described its weight of a kind of component accounts for the 0.5-40% of blended material gross weight.

24, the method for the anti-combustion of each described formation blended material among the claim 17,18,20 or 21 is characterized in that described its weight of a kind of component accounts for the 0.15-5% of blended material gross weight.

25, a kind of anti-combustion yarn is characterized in that, with each described method spinning among the claim 5 to 7 and 10 to 24.

26, a kind of fire-Resistant Fabric, it is characterized in that, with each described method among the claim 1,2 or 8 to 24 weave and/or be mixed with among claim 1 or the claim 3 to 7 each, the perhaps yarn of each described method spinning among the claim 10 to 24.

27, a kind of coat, suit or all kinds of Work Clothes is characterized in that, are made up of the described fabric of claim 26 fully, mainly or at least in part.