CN105350131B - Organic silazane fire retardant viscose short filament and the blending of flame-retardant acrylic fibre - Google Patents
Organic silazane fire retardant viscose short filament and the blending of flame-retardant acrylic fibre Download PDFInfo
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- CN105350131B CN105350131B CN201510626919.6A CN201510626919A CN105350131B CN 105350131 B CN105350131 B CN 105350131B CN 201510626919 A CN201510626919 A CN 201510626919A CN 105350131 B CN105350131 B CN 105350131B
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- flame
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- retardant
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Classifications
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/04—Blended or other yarns or threads containing components made from different materials
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/07—Addition of substances to the spinning solution or to the melt for making fire- or flame-proof filaments
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/443—Heat-resistant, fireproof or flame-retardant yarns or threads
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
- D03D15/513—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads heat-resistant or fireproof
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Artificial Filaments (AREA)
Abstract
Organic silazane fire retardant viscose short filament and the blending of flame-retardant acrylic fibre.Organic silazane fire retardant viscose short filament contains cellulose and silicon nitrogen combustion inhibitor.The fabric being made into by this blending obtained flame-retardant spun yarn and garment material not only maintain the original special performance comfortable and easy to wear of viscose rayon, and anti-flammability is higher, burn low smog, safety and environmental protection, and have splendid corrosion-resistant and light resistance concurrently.
Description
Technical field
The present invention relates to the related application of the blending of the fiber of different performance and products obtained therefrom.
Background technology
No matter synthetic fibers, viscose rayon or the equal easy firing of natural cotton fiber catches fire and causes fire.In viscose rayon
Although the middle fire resistance fibre adding fire retardant to be produced can play certain fire retardation, common fire resistance fibre on market
Intensity itself is often not enough, all unsatisfactory in application scenarios such as wear-resisting and resistance to deformations.
Content of the invention
It is an object of the invention to provide a kind of blending flame retardant products, it also at least can be taken into account while providing fire-retardant and knit
The durability of thing.
According to the first aspect of the invention, there is provided a kind of flame resistant spun staple yarns, it is by organic silazane fire retardant viscose short filament
Make with flame-retardant acrylic fibre blending, wherein organic silazane fire retardant viscose short filament contains cellulose and silicon nitrogen combustion inhibitor.
Flame-retardant acrylic fibre is well known, is one of big kind of synthetic fibers four, the performance such as it is fluffy, curling, softness
Similar to Pilus Caprae seu Oviss, there is the woolly feel of class and warmth retention property, but intensity and anti-wear performance are superior to Pilus Caprae seu Oviss.In addition, acrylon are knitted
Thing is washable easily dry, and nursing is simple, has light resistance, the characteristic such as corrosion-resistant.
In a particular embodiment of the present invention, organic silazane fire retardant viscose short filament and flame-retardant acrylic fibre part by weight can be
15：85 to 65:Between 35.
It is surprising that inventor has been found that the organic silazane fire retardant viscose short filament of the present invention and flame-retardant acrylic fibre
After (fiber) carries out blending, gained chopped fiber is used for manufacturing respective fabric such as protective garment etc., then gained blend fabric is not only in resistance
Any one single yarn fabric is all exceeded in combustion performance, and also substantially close to flame-retardant acrylic fibre in the performances such as corrosion-resistant and light resistance.
This is probably that two kinds of fibers are subject to temperature, pressure and/or chemical affect to lead to some groups of split-phases in blending and weaving process
Mutually penetrate into or change and be relevant.
According to the second aspect of the invention, there is provided with regard to the preparation method of the flame resistant spun staple yarns of first aspect.The method
Including：
There is provided fire retardant viscose short filament, it comprises step：
Cellulose is made spinning viscose stock solution；
Silicon nitrogen combustion inhibitor is configured to fire resistant fluid；
Carry out spinning with spinning viscose stock solution immediately after fire resistant fluid is mixed；
Spinning fibre is cut into the chopped fiber of predetermined length；
Cationic cross linking agent is adopted chopped fiber to be carried out solidify the desulfurization process anti-flaming viscose stable to obtain fire resistance
Chopped fiber；
Flame-retardant acrylic fibre is provided；And
Fire retardant viscose short filament and flame-retardant acrylic fibre (fiber) are carried out blending to obtain flame resistant spun staple yarns according to predetermined ratio.
In a particular embodiment of the present invention, blending includes opening picking step, cotton carding step, drafting step, rove step
And spun yarn step.Each step corresponding process parameters are as follows.
In opening picking step：Comprehensive Beater Speed is 750r/min, and lap roller speed is 11r/min, lap
Dry Weight per Unit be 380g/m, length 30.6m.
In cotton carding step：Cylinder speed 300r/min, doffer speed is 28r/min, and licker-in speed is 700r/min；Remove
Dirt knife up goes out machine frame horizontal plane 6mm, and setting angle is 95 °；Mote knife and licker-in gauge are 0.36mm, and licker-in is spaced with feed plate
It is respectively 0.28mm, 0.25mm, 0.25mm, 0.28mm away from for 0.38mm, adopting 4 points of gauges between cylinder and cover plate；The carded sliver is done fixed
Measure as 16.78g/5m, carded sliver short fiber content (≤20mm) is 4.20%.
In drafting step：Repeatedly drafting, tight gauge pressurize again and 5-6m/min sliver exporting speed.
In rove step：Dry Weight per Unit 3.35g/5m, ratch 42mm × 55mm × 67mm, back area draft 1.16
Times, front roller speed is 195r/min, twist factor 68.
In spun yarn step：Ratch 43mm×58mm, 1.165 times of back area draft, twist factor 335, front roller speed
Degree 205r/min.
Chopped fiber specification prepared according to the methods of the invention can be 1.0D-6.0D's (representing the weight of unit length)
Within wide scope.
According to the third aspect of the invention we, there is provided a kind of method for weaving of fabric, including：
The flame resistant spun staple yarns of method preparation as described in respect of the second aspect of the invention are provided；And
Following process is carried out to flame resistant spun staple yarns：
The process of high-temperature vacuum yarn steaming, wherein vacuum are -0.08MPa, temperature is 95-115 DEG C, process time is 2 hours
Left and right；
Warping is processed：Warping pressure is 0.4MPa, warping speed is 400m/min；
Sizing is processed：Serosity includes 50 parts of low viscosity phosphate ester starches, 12.5 parts of PVA 1799 and 6 part third in parts by weight
Olefin(e) acid class slurry (P T), wherein slurry solid content 5%, unpacking viscosity 11s, starch pot viscosity 5s；
Gait process：Mode of gaiting be { (1,5), (3,2), (6,4) } × 12, (9,5,11), (12,9,5), (11,12,
9)、(5、11、12)、{(1、7)、(3、2)、(8、4)}×16、{(1、5)、(3、2)、(6、4)}×4.
In a preferred embodiment, the present invention has also carried out meticulous selection and design to yarn：Can adopt through weft yarn
JC 9.7tex (twist 1950 twists with the fingers/m) strong twisted yarn, and arranged by 2S: 2Z.This selection design makes to expect after printing and dyeing arrangement
Feel is pleasant, has and indistinct crimps stricture of vagina effect.
In a word, the present invention at least has advantages below：
Fabric according to made by the present invention and garment material not only maintain viscose rayon original comfortable and easy to wear solely
Characteristic energy, and anti-flammability is higher, burn low smog, safety and environmental protection, and also it is (sun-resistant to have splendid corrosion-resistant and light resistance concurrently
Property).
Specific embodiment
If no special instructions, used in the present invention, term is Essential Terms in field of textiles.
The flame resistant spun staple yarns of the present invention are made up of organic silazane fire retardant viscose short filament and flame-retardant acrylic fibre blending.The present invention's
Organic silazane fire retardant viscose short filament contains cellulose and silicon nitrogen combustion inhibitor.Organic silazane fire retardant viscose short filament can contain
70-80% (weight) cellulose and 20-30% (weight) silicon nitrogen combustion inhibitor；Or also can contain 1.5-2.5% (weight) further
Cationic cross linking agent.The ionic speciess of cationic cross linking agent can be Ti4+、RN3+、Al3+.In the preferred embodiments of the present invention
In, the degree of polymerization of the cellulose contained by organic silazane fire retardant viscose short filament can be 650～750.The organic silazane of the present invention
Fire retardant viscose short filament length can be 38-120mm.
Used in the present invention, silicon nitrogen combustion inhibitor can be silicon dioxide nitrogen heterocyclic compounds.It is for instance possible to use organosilicon
Alkane hydrolyzes dispersion liquid, and its chemical formula is [Me2O·nSiO2]+[-- CONH], wherein Me representation metal ion, SiO2Content is
9.23-53%；Amide [-- CONH] content is 4.3-27%.With regard to silicon nitrogen combustion inhibitor, referring also to special before applicant
Profit application CN104032401A and CN103789858A, here is respectively to introduce the whole interior of this two applications referring to mode
Hold.In a preferred embodiment of the invention, silicon nitrogen combustion inhibitor adopts Beijing Sail orchid fire resistance fibre company limited to produce simultaneously
801 selling#Silicon nitrogen combustion inhibitor.
During blending, organic silazane fire retardant viscose short filament and flame-retardant acrylic fibre part by weight can be as needed 15：85 to
65:Selected between 35.
It is below the manufacturing process flow of the flame resistant spun staple yarns of the present invention：
FA002 type griping cotton machine → SFA035C type mixed cotton slitter → FA56B type kirschner beater opener → SFA161 type vibration
Hopper feeder → A076E type single beater scutcher → FA231 type carding machine → FA311F type drawing frame → FA311F type drafting
Machine → FA311F type drawing frame → FA423A type fly frame → FA506 type spinning frame → GA013 type bobbin-winding machine → one-tenth bag
Each corresponding operation/step specific process parameter is as follows：
Opening and cleaning step
Comprehensive Beater Speed is 750r/min, and lap roller speed is 11r/min, and the Dry Weight per Unit of lap is 380g/
M, length 30.6m
Carding step
Cylinder speed 300r/min, doffer speed is 28r/min, and licker-in speed is 700r/min；Mote knife exceeds machine frame
Horizontal plane 6mm, setting angle is 95 °；Mote knife and licker-in gauge are 0.36mm, and licker-in and feed plate spacer are 0.38mm,
Adopting 4 points of gauges to be respectively 0.28mm, 0.25mm, 0.25mm, 0.28mm. carded sliver Dry Weight per Unit between cylinder and cover plate is 16.78g/
5m, carded sliver short fiber content (≤20mm) is 4.20%.
Mixing in doubling step
For ensureing correctly good ripe bar and mixing quality, using the Process configuration of multiple drafting, tight gauge pressurize again and
The less sliver exporting speed of 5-6m/min.
Roving Frames
Dry Weight per Unit 3.35g/5m, ratch 42mm × 55mm × 67mm, 1.16 times of back area draft, front roller speed is
195r/min, twist factor 68.
Spinning process
Ratch 43mm×58mm, 1.165 times of back area draft, twist factor 335, front roller speed 205r/min.
The fabric knitting technological process of the present invention is：
Yarn steaming (shaping) → warping → sizing → denting → weave → check → grade → repair and knit → finished product.
The present invention also can further include dyeing and finishing technology flow process：
Singe → overflow scourings and bleaching → mercerising → overflow dyeing → loose-drying → softness → preshrunk.
The each concrete operation/step of fabric knitting of the present invention is as follows：
Yarn prepares
Carefully repair apparatus are it is ensured that spindle goes slick, each even tension, and be rigid in checking up operation, it is to avoid artificially twist contraction；
Yarn steaming
Evacuation → preheating → humidification → insulation (constant temperature) → vacuum cool-down → end.Wherein evacuation 8min, reaches finger
Determine vacuum -0.08MPa, 95～115 DEG C of temperature, High Temperature High Pressure yarn steaming 120min.
Warping
Using D type gold plan warping machine, take middle tension force, the process route of middle elongation, under the premise of making piece yarn tension uniform,
Reduce the destruction to yarn setting, do part preparation for reducing later stage retraction.Fabric, always through 5632, is joined axle and is twisted with the fingers for Z：704×
4, S sth. made by twisting：704 × 4, join axle for totally 8.Use adjustable warping creel, angle is maintained at 45 °, so that full wafer warp tension is consistent.Whole
Through pressure 0.4MPa, warping speed 400m/min.
Sizing
Slurry formula：Low viscosity phosphate ester starch 50kg, PVA 179912.5kg, acrylic size (P T) 6kg, slurry
Liquid solid content 5%, unpacking viscosity 11s, starch pot viscosity 5s.
Machine on sizing
It is driven GA308 type warp sizing machine using Unit seven and carries out starching, sizing adopts the not stratified mud jacking of tandem sizing box double-clip-double-nip
Technique, controls soaking paste depth in 20cm, suitably increases unwinding tension it is ensured that speed must not be too fast, and adopts hydrophilic fibre.
Gait
Using No. 78 reed, the every reed of wire gauze 2 enters, and warp thread one circulates 204, and using 12 comprehensive weavings, the mode of gaiting is
{(1、5)、(3、2)、(6、4)}×12、(9、5、11)、(12、9、5)、(11、12、9)、(5、11、12)、{(1、7)、(3、2)、
(8,4) } × 16, { (1,5), (3,2), (6,4) } × 4, warp stop sheet 6 arranges along wearing.
Weaving
Using Picanol (Picanol) multi-arm air-jet loom weaving.
Printing and dyeing
Cloth clamp joint mercerizing range overflow dyeing machinery is directly rolled with bath process using Caustic soda hydrogen peroxide soft
Arrange the finishing technique of preshrunk
Embodiment 1：Silicon nitrogen FRC and flame-retardant acrylic fibre 35:65 blending inflaming retarding fabrics
Blending is carried out using 2D x 51mm silicon-nitrogen system FRC and flame-retardant acrylic fibre, using the production in description
Method, makes 10 yarns, twill, the inflaming retarding fabric of grammes per square metre 200g.Can be in the base of the corrosion-resistant and fast light performance of flame-retardant acrylic fibre
On plinth, enhance its anti-flammability, can use as special fireproof, army's BDU fabric etc..
Embodiment 2：Silicon nitrogen FRC and flame-retardant acrylic fibre 65:35 blending inflaming retarding fabrics
Blending is carried out using 2D x 38mm silicon-nitrogen system FRC and flame-retardant acrylic fibre, using the production in description
Method, makes 20 yarns, twill, the inflaming retarding fabric of grammes per square metre 150g.Can make fabric meet simultaneously high flame resistance, corrosion-resistant and
Light resistance, wears pleasant requirement, as needing fire-retardant fireproof requirement and can wear next to the skin the garment surface of needs
Material uses.
It will be understood by those skilled in the art that each method and step successively listed in above-described embodiment is intended merely to play
Illustrate that the purpose of the present invention is not used to be limited.Therefore these steps have no inevitable precedence, also not can not
Or lack.The present invention is only specifically limited by each claim.
Claims (1)
1. a kind of preparation method of flame resistant spun staple yarns, including：
There is provided fire retardant viscose short filament, it comprises step：
Cellulose is made spinning viscose stock solution, the degree of polymerization of wherein said cellulose is 650～750；
Silicon nitrogen combustion inhibitor is configured to fire resistant fluid, wherein silicon nitrogen combustion inhibitor adopts Beijing Sail orchid fire resistance fibre company limited to produce
And 801 selling#Silicon nitrogen combustion inhibitor；
Carry out spinning with spinning viscose stock solution immediately after fire resistant fluid is mixed；
Spinning fibre is cut into the chopped fiber that predetermined length is 38-120mm, it is fine that its middle short fiber contains 70-80% (weight)
Dimension element and 20-30% (weight) silicon nitrogen combustion inhibitor；
Cationic cross linking agent is adopted chopped fiber to be carried out solidify desulfurization process to obtain the short fibre of the stable anti-flaming viscose of fire resistance
Dimension, wherein fire retardant viscose short filament contains the cationic cross linking agent of 1.5-2.5% (weight)；
Flame-retardant acrylic fibre is provided；And
By fire retardant viscose short filament and flame-retardant acrylic fibre according to part by weight 15：85 to 65:Predetermined ratio between 35 is mixed
Spin to obtain flame resistant spun staple yarns,
Wherein blending includes：Opening picking step, cotton carding step, drafting step, rove step and spun yarn step,
In opening picking step：Comprehensive Beater Speed is 750r/min, and lap roller speed is 11r/min, lap dry
Quantification of 380g/m, length 30.6m；
In cotton carding step：Cylinder speed 300r/min, doffer speed is 28r/min, and licker-in speed is 700r/min；Mote knife
Exceed machine frame horizontal plane 6mm, setting angle is 95 °；Mote knife and licker-in gauge are 0.36mm, and licker-in with feed plate spacer is
0.38mm, adopts 4 points of gauges to be respectively 0.28mm, 0.25mm, 0.25mm, 0.28mm between cylinder and cover plate；Carded sliver Dry Weight per Unit is
The carded sliver short fiber content of 16.78g/5m ,≤20mm is 4.20%；
In drafting step：Repeatedly drafting, tight gauge pressurize again and 5-6m/min sliver exporting speed；
In rove step：Dry Weight per Unit 3.35g/5m, ratch 42mm × 55mm × 67mm, 1.16 times of back area draft, front
Roller speed is 195r/min, twist factor 68；
In spun yarn step：Ratch 43mm × 58mm, 1.165 times of back area draft, twist factor 335, front roller speed
205r/min.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510626919.6A CN105350131B (en) | 2015-09-28 | 2015-09-28 | Organic silazane fire retardant viscose short filament and the blending of flame-retardant acrylic fibre |
| PCT/CN2016/100255 WO2017054698A1 (en) | 2015-09-28 | 2016-09-27 | Blending of organic silicon-nitrogen flame retardant viscose staple fibre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510626919.6A CN105350131B (en) | 2015-09-28 | 2015-09-28 | Organic silazane fire retardant viscose short filament and the blending of flame-retardant acrylic fibre |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105350131A CN105350131A (en) | 2016-02-24 |
| CN105350131B true CN105350131B (en) | 2017-03-01 |
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| CN201510626919.6A Expired - Fee Related CN105350131B (en) | 2015-09-28 | 2015-09-28 | Organic silazane fire retardant viscose short filament and the blending of flame-retardant acrylic fibre |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017054698A1 (en) * | 2015-09-28 | 2017-04-06 | 北京赛欧兰阻燃纤维有限公司 | Blending of organic silicon-nitrogen flame retardant viscose staple fibre |
| CN106337226B (en) * | 2016-09-13 | 2019-01-04 | 际华三五零九纺织有限公司 | A kind of flame-retardant and anti-static mixed yarn and its production method and purposes |
| CN106400235B (en) * | 2016-12-07 | 2019-03-01 | 北京赛欧兰阻燃纤维有限公司 | Organic silazane system fire resistance fibre is blended with organic phosphorus fire resistance fibre |
| CN108166118B (en) * | 2017-12-27 | 2020-05-22 | 南通谐好安全科技有限公司 | Economical material flame retardant blends |
| CN108166119A (en) * | 2017-12-27 | 2018-06-15 | 南通谐好安全科技有限公司 | The fire-retardant blend of comfort arc protection |
| CN109554926A (en) * | 2018-11-16 | 2019-04-02 | 无锡环中科技服务有限公司 | Permanent inflaming retarding fabric |
| CN110359168A (en) * | 2019-08-14 | 2019-10-22 | 苏州百进纺织有限公司 | A kind of scribbled and fabric of flame-retardant viscose fiber and acrylic fibers fire resistance fibre |
| CN111020815A (en) * | 2019-11-29 | 2020-04-17 | 江苏金太阳纺织科技股份有限公司 | Quilt core fabric with electromagnetic wave shielding, permanent flame retardance and no molten drops and preparation method thereof |
| CN111607888A (en) * | 2020-06-11 | 2020-09-01 | 江苏成华纺织有限公司 | Flame-retardant acrylic fiber and cotton blended knitted fabric and preparation method thereof |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100343426C (en) * | 2005-12-29 | 2007-10-17 | 中国人民解放军海军医学研究所 | Thermal resistant fire resistant fibric and preparation process thereof |
| CN101538764A (en) * | 2009-04-23 | 2009-09-23 | 上海神九纺织科技有限公司 | Blended yarn weaved fabric based on novel flame retardant viscose, preparation method and application thereof |
| CN101736463A (en) * | 2009-12-14 | 2010-06-16 | 江阴市海江纱厂有限公司 | Flame-retardant blended yarn and production method |
| CN102011226A (en) * | 2010-10-27 | 2011-04-13 | 江南大学 | Semi-worsted flame retardant blended yarn and spinning technology thereof |
| DE102011010215A1 (en) * | 2011-02-03 | 2012-08-09 | Greve & Co Kg | Fabric for heat and flame resistant protective clothing |
| CN102352539B (en) * | 2011-07-27 | 2013-05-29 | 杭州奥通科技有限公司 | Manufacturing method of silicon-nitrogen containing environmental protection and flame retardant viscose staple fiber |
| CN102965798A (en) * | 2012-12-24 | 2013-03-13 | 江苏唐工纺实业有限公司 | Flame-retardant protective clothing fabric |
| CN103789858B (en) * | 2014-01-27 | 2015-12-30 | 刘承修 | A kind of environment-friendly type thermostable durable flame-retardant fiber and preparation method thereof |
| CN104385746B (en) * | 2014-11-17 | 2017-06-16 | 上海特安纶纤维有限公司 | Automatic welding gun industrial robot protective fabric and preparation method thereof |
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