CN101037812A - Melt-resistant flame-proof cellulose viscose and method for making same - Google Patents
Melt-resistant flame-proof cellulose viscose and method for making same Download PDFInfo
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- CN101037812A CN101037812A CN 200710014166 CN200710014166A CN101037812A CN 101037812 A CN101037812 A CN 101037812A CN 200710014166 CN200710014166 CN 200710014166 CN 200710014166 A CN200710014166 A CN 200710014166A CN 101037812 A CN101037812 A CN 101037812A
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- 229920000297 Rayon Polymers 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 15
- 229920002678 cellulose Polymers 0.000 title claims description 46
- 239000001913 cellulose Substances 0.000 title claims description 46
- 239000003063 flame retardant Substances 0.000 claims abstract description 70
- 239000000835 fiber Substances 0.000 claims abstract description 50
- 238000009987 spinning Methods 0.000 claims abstract description 25
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000002360 preparation method Methods 0.000 claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 12
- 239000006166 lysate Substances 0.000 claims description 23
- 239000003292 glue Substances 0.000 claims description 19
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 17
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 14
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 14
- FPVGTPBMTFTMRT-NSKUCRDLSA-L fast yellow Chemical compound [Na+].[Na+].C1=C(S([O-])(=O)=O)C(N)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 FPVGTPBMTFTMRT-NSKUCRDLSA-L 0.000 claims description 14
- 230000035800 maturation Effects 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 10
- 239000003513 alkali Substances 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 238000007598 dipping method Methods 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 7
- 235000011152 sodium sulphate Nutrition 0.000 claims description 7
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 7
- 229960001763 zinc sulfate Drugs 0.000 claims description 7
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 5
- 206010048232 Yawning Diseases 0.000 claims description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims description 5
- 239000011574 phosphorus Substances 0.000 claims description 5
- XPPKVPWEQAFLFU-UHFFFAOYSA-J diphosphate(4-) Chemical compound [O-]P([O-])(=O)OP([O-])([O-])=O XPPKVPWEQAFLFU-UHFFFAOYSA-J 0.000 claims description 4
- 235000011180 diphosphates Nutrition 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 238000010298 pulverizing process Methods 0.000 claims description 4
- 230000001112 coagulating effect Effects 0.000 claims description 3
- 238000012805 post-processing Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000002156 mixing Methods 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract 3
- 238000001035 drying Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 230000005070 ripening Effects 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 13
- 239000000155 melt Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 230000004927 fusion Effects 0.000 description 7
- 239000000839 emulsion Substances 0.000 description 6
- 235000011121 sodium hydroxide Nutrition 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 238000006477 desulfuration reaction Methods 0.000 description 5
- 230000023556 desulfurization Effects 0.000 description 5
- 230000007935 neutral effect Effects 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- 230000009970 fire resistant effect Effects 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000004816 latex Substances 0.000 description 3
- 229920000126 latex Polymers 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000002075 main ingredient Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 206010053615 Thermal burn Diseases 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 230000031709 bromination Effects 0.000 description 1
- 238000005893 bromination reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
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- Artificial Filaments (AREA)
Abstract
The invention discloses a anti-melting flameretardant fiber and preparation method thereof. The flame-retardant is added in the dissolving procedure to using production method of viscose fiber, and then processed by mixing, filtration, ripening, debubbling, spinning, refinning, drying, and finished product to produce flameretardant fiber. When burning, the said anti-melting flameretardant fiber will not melt but only carbonize to keeping the original shape of fibre, therefore it prevent high temperature melting drip scalding the people. Furthermore the flame-retardant homogeneously disperses in viscose, and does not smolders and is easy to self extinguish after leaving fire source. The said preparation method is simple and easily operated. The flame retardant property is good, and the disperse of flame-retardant is homogeneous.
Description
Technical field
The present invention relates to a kind of artificial fibre, especially relate to a kind of anti-fire resistance fibre that melts, and the preparation method of this melt-resistant flame-proof cellulose viscose.
Background technology
In order effectively to solve the fire safety problem in various places, people have adopted various methods, wherein adopt fire resistance fibre to prevent and to reduce the harm that the fabric fire brings, be a kind ofly to prevent to use the fabric place to occur as the effective ways of calamity, Fire resistant viscose fiber is that present people use very general fire resistance fibre.The method that present people prepare Fire resistant viscose fiber mainly contains coating, promptly make back or (when fiber is in gel state) in process of production at fiber, the adhesive that fire retardant is become with other combinations of substances is coated on the surface of fiber with the latex state, that uses at present has fire retardant and a polyvinyl chloride latex, the polyvinyl bromide latex, the fire retardant adhesive that chlorinated paraffin wax or bromination aromatic hydrocarbons etc. are combined into, and the halogen-containing fire retardant of the many employings of fire retardant, exist non-degradable, has certain pollution after discarded, and this kind fire retardant non-refractory, not wash resistant and Exposure to Sunlight, the easy fusion of its interior fiber is dripped and appearance scald people's phenomenon when meeting fire burns, and this kind fiber easily glows after leaving burning things which may cause a fire disaster,, do not bring certain difficulty to fire prevention from putting out.Also there is employing before spinning, to adopt special equipment that fire retardant is made an addition in the spinning solution, since the preparation have anti-flammability viscose, but adopt the Fire resistant viscose fiber of this method preparation, not easy to operate, fire retardant mixes inhomogeneous in it, the uniformity of its flame retardant effect is relatively poor, and has also increased the high cost that spins preceding interpolation fire retardant.
Summary of the invention
Technical problem to be solved by this invention has provided a kind of melt-resistant flame-proof cellulose viscose, thereby charing can only take place in the not fusion of when burning and avoid the high-temperature fusion dropping that the people is scalded to keep the fiber original form in it, and fire retardant is uniformly dispersed in viscose glue, after leaving burning things which may cause a fire disaster, do not glow, easily from putting out.
The present invention also provides a kind of production simple, easy to operate, the preparation method of fire retardant finely dispersed this melt-resistant flame-proof cellulose viscose in viscose glue.
This melt-resistant flame-proof cellulose viscose is to adopt to contain phosphorus type flame retardant and be prepared from, dried fracture strength 〉=the 1.80cN/dtex of its finished fiber, wet breaking strength 〉=1.00cN/dtex, dried elongation at break 14.0～20.0%, line density deviation ratio-4.0～4.0%, whiteness 65～85%, oil content 0.15～3.50%, regain 8.0～13.0%, LOI limited oxygen index 27.0～32.0%.And this fire resistance fibre is to adopt to add the pyrophosphate based flame retardant when the alkali cellulose yellow ends the back dissolving, stir and make the anti-flaming viscose of preparation fire resistance fibre, the relative alpha cellulose amount of fire retardant effective content is 15～25% in the finished product fire resistance fibre that makes, certainly, the content of fire retardant can carry out suitable adjustment according to actual needs in the finished product fire resistance fibre when producing.This melt-resistant flame-proof cellulose viscose has not only guaranteed the dispersing uniformity of fire retardant in viscose glue, also stablized the flame retardant effect of fire resistance fibre, and high temperature resistant, wash resistant, sun-resistant, not fusion drippage and charing only takes place when meeting fire burns, and have after put out effect, leaving burning things which may cause a fire disaster, do not glow, can keep the fiber original form after the charing, the phenomenon of having avoided the high-temperature fusion dropping that the people is scalded can be widely used in hospital, army, fire-fighting domain and old man, garment for children, bedding etc.
The present invention prepares the method for melt-resistant flame-proof cellulose viscose, adopt the preparation technology of viscose, for selecting cellulose pulps such as high quality cotton, wood pulps for use is raw material, through dipping, squeezing, pulverizing, experienced, yellow, dissolving, mixing, filtration, maturation, deaeration, spinning, stretch oneself and yawn, step such as concise, oven dry, just add fire retardant at yellow end of a period dissolution process the time, it is specially:
A) will contain phosphorus type flame retardant joins in the yellow lysate and stirs preparation fire retardant yellow lysate;
B) adopt cellulose pulp after dipping, squeezing, pulverizing, experienced, yellow, to make cellulose yellow acid fat;
C) mix stirring and dissolving with the yellow lysate that contains fire retardant to the adding of cellulose yellow acid fat, make anti-flaming viscose, and after filtration, maturation makes alpha cellulose content mass ratio 7.0～10.8%, the relative alpha cellulose effective content 15～25% of fire retardant, contain alkali mass ratio 4.5～7.5%, viscosity 30～60s adopts 10%NH
4The spinning glue of Cl meter degree of ripeness 8～20ml;
D) will make spinning glue and spray at sulfuric acid 75～120g/l through shower nozzle, zinc sulfate 15～45g/l, sodium sulphate 260～350g/l, the coagulating bath moulding that temperature is 30～45 ℃, and through stretching oneself and yawn, post processing such as concise, oven dry makes fire resistance fibre.
Cellulose pulp is flooded, squeezing, pulverizing, experienced to generate alkali cellulose, alkali cellulose is carried out yellow generate cellulose yellow acid fat, these all adopt common viscose preparation section, process conditions and the technological parameter in each operation wherein, can carry out according to the condition of actual production, this is known general knowledge to those skilled in the art; And preparation fire retardant yellow lysate can adopt the organophosphor emulsion that will contain fire retardant, as NLD-02 (Main Ingredients and Appearance pyrophosphate C
10H
20O
2P
2S
2), the fire retardant DXL1212 that Exolit 5060 (Main Ingredients and Appearance polyphosphonates) and welfare chemical industry auxiliary reagent factory, Liyang produce, join in the yellow lysate that contains NaOH and stir and make, and can directly fire retardant yellow lysate be joined in the xanthating machine after yellow finishes and mix with cellulose yellow acid fat, make anti-flaming viscose, then after filtration, maturation, deaeration makes alpha cellulose content mass ratio 7.0～10.8%, the relative alpha cellulose effective content of fire retardant mass ratio 15～25%, contain alkali mass ratio 4.5～7.5%, viscosity 30～60s adopts 10%NH
4The spinning glue of Cl meter degree of ripeness 8～20ml; After through the coagulating bath spinning moulding, can be again through between dish, three bathe, the four multistage postprocessing working procedures such as technology and concise, oven dry of effectively stretching oneself and yawn of bathing combination, to make qualified melt-resistant flame-proof cellulose viscose, wherein filtration, maturation, deaeration, spinning, stretch oneself and yawn, common preparation section that step such as concise, oven dry also is viscose, process conditions and the technological parameter in each operation wherein, can carry out according to the condition of actual production, this is known general knowledge to those skilled in the art.
Each raw material is raw material commonly used in current production viscose and the fire resistance fibre among the present invention, all be commercially available, and the various device that uses in the preparation section also is to there is no special feature by the used conventional equipment of preparation viscose.
The present invention's employing yellow end of a period dissolving glue process in cellulose viscose manufacturing technique adds fire retardant, after dispersed with stirring, blend, effectively guaranteed the dispersing uniformity of fire retardant in viscose glue, closely stablized the flame retardant effect of fiber behind the spinning moulding, and produce simple relatively, easily operation; Having avoided spinning forward direction spinning solution interpolation fire retardant exists the dispersion of fire retardant in viscose glue inhomogeneous, flame retardant effect lack of homogeneity and the extra problem of spinning preceding interpolation equipment that increases, make viscose glue can keep good strainability, changed the fibre strength problem on the low side that conventional method is produced, improved the flame retardant effect of fiber, make the Fire resistant viscose fiber that makes high temperature resistant, wash resistant, sun-resistant, and because interior fire retardant of this fire resistance fibre and intrastitial composition mix, not fusion drippage when meeting fire burns and charing only takes place, have from putting out effect, leave burning things which may cause a fire disaster and do not glow, can keep the fiber original form after the charing, the phenomenon of having avoided the high-temperature fusion dropping that the people is scalded.Can be widely used in hospital, army, fire-fighting domain and old man, garment for children, bedding etc.
The specific embodiment
Embodiment one
With effective content is 38.8% fire retardant DXL1212 emulsion 20kg, joins in the 60L yellow lysate, makes its fully mixed fire retardant yellow lysate that gets through stirring; With cellulose pulp through the dipping, squeezing, pulverize, experienced, make cellulose yellow acid fat after the yellow, add to cellulose yellow acid fat then and contain the yellow lysate of fire retardant and mix stirring and dissolving, make anti-flaming viscose, after filtration, maturation, deaeration makes alpha cellulose content mass ratio 7.06%, the relative alpha cellulose effective content of fire retardant mass ratio 23.2%, sodium hydrate content mass ratio 6.24%, viscosity 39s, the spinning glue of degree of ripeness 12ml, through sulfuric acid content 100g/L, sodium sulphate 330g/L, zinc sulfate 35g/L, 38 ℃ of temperature solidify the acid bath spinning, produce the 1.5D staple fibre through drawing-off afterwards, fiber is extremely neutral through washing, desulfurization, dehydration, oil, oven dry makes the 1.5D fire resistance fibre.
The melt-resistant flame-proof cellulose viscose index that makes: do fracture strength 2.33cN/dtex; Wet breaking strength 1.12cN/dtex; Dried elongation at break 16.4%; Line density deviation ratio-1.2%; Whiteness 79%; Oil content 0.18%; Regain 12.1%; LOI limited oxygen index 28.5.
Embodiment two
With effective content is 38.4% fire-retardant N LD-02 emulsion 6.5kg, joins in the 20L yellow lysate, makes its fully mixed fire retardant yellow lysate through stirring; With cellulose pulp through the dipping, squeezing, pulverize, experienced, make cellulose yellow acid fat after the yellow, add to cellulose yellow acid fat then and contain the yellow lysate of fire retardant and mix stirring and dissolving, make anti-flaming viscose, after filtration, maturation, deaeration makes alpha cellulose content mass ratio 8.86%, the relative alpha cellulose effective content of fire retardant mass ratio 15.4%, sodium hydrate content mass ratio 6.24%, viscosity 42s, the spinning glue of degree of ripeness 15ml, at sulfuric acid content is 115g/L, sodium sulphate 330g/L, zinc sulfate 45g/L, 40 ℃ of temperature solidify the acid bath spinning, produce the 3.0D staple fibre through drawing-off afterwards, fiber is extremely neutral through washing, desulfurization, dehydration, oil, oven dry makes the 3.0D fire resistance fibre.
The melt-resistant flame-proof cellulose viscose index that makes: 2.83cN/dtex; Wet breaking strength: 1.52cN/dtex; Dried elongation at break: 15.4%; Line density deviation ratio: 2.2%; Whiteness: 72%; Oil content: 0.28%; Regain: 12.1%; LOI limited oxygen index 30.8%.
Embodiment three:
With effective content is 38.8% fire retardant DXL1212 emulsion 20kg, joins in the 60L yellow lysate, makes its fully mixed fire retardant yellow lysate that gets through stirring; With cellulose pulp through the dipping, squeezing, pulverize, experienced, make cellulose yellow acid fat after the yellow, add to cellulose yellow acid fat then and contain the yellow lysate of fire retardant and mix stirring and dissolving, make anti-flaming viscose, after filtration, maturation, deaeration makes alpha cellulose content mass ratio 7.04%, fire retardant is to alpha cellulose effective content mass ratio 21.6%, the viscose glue of sodium hydrate content mass ratio 5.44%, after filtration, maturation, deaeration makes spinning glue, viscosity 32s, degree of ripeness 10ml is 120g/L at sulfuric acid content, sodium sulphate 330g/L, zinc sulfate 18g/L, 42 ℃ of temperature solidify the acid bath spinning, produce fiber through suitable drawing-off.Fiber through washing to neutral, through desulfurization, dewater, oil, dry and make 120D/30F anti-flaming viscose long filament.
The melt-resistant flame-proof cellulose viscose index that makes is done fracture strength: 2.02cN/dtex; Wet breaking strength: 1.04cN/dtex; Dried elongation at break: 15.4%; Line density deviation ratio :-1.2%; Oil content: 0.18%; Regain: 12.1%; LOI limited oxygen index 27.5.
Embodiment four:
With effective content is 38.4% fire-retardant N LD-02 emulsion 8kg, joins in the 20L yellow lysate, makes its fully mixed fire retardant yellow lysate through stirring; With cellulose pulp through the dipping, squeezing, pulverize, experienced, make cellulose yellow acid fat after the yellow, add to cellulose yellow acid fat then and contain the yellow lysate of fire retardant and mix stirring and dissolving, make anti-flaming viscose, after filtration, maturation, deaeration makes alpha cellulose content mass ratio 10.8%, fire retardant is to alpha cellulose effective content mass ratio 20%, sodium hydrate content mass ratio 7.5%, viscosity 60s, the spinning glue of degree of ripeness 20ml, at sulfuric acid content is 119g/L, sodium sulphate 350g/L, zinc sulfate 45g/L, 45 ℃ of temperature solidify the acid bath spinning, produce the 3.0D staple fibre through drawing-off afterwards, fiber is extremely neutral through washing, desulfurization, dehydration, oil, oven dry makes the 3.0D fire resistance fibre.
The melt-resistant flame-proof cellulose viscose index that makes is done fracture strength: 2.05cN/dtex; Wet breaking strength: 1.22cN/dtex; Dried elongation at break: 14.4%; Line density deviation ratio: 2.6%; Whiteness: 69%; Oil content: 1.28%; Regain: 12.9%; LOI limited oxygen index 31.8%.
Embodiment five:
With effective content is 38.8% fire retardant DXL1212 emulsion 20kg, join in the 60L yellow lysate, through stirring it is fully mixed, joining yellow as lysate finishes in the xanthating machine, make alpha cellulose content mass ratio 7.0%, fire retardant is to alpha cellulose effective content mass ratio 18%, the viscose glue of sodium hydrate content mass ratio 4.5%, after filtration, maturation, deaeration makes spinning glue, viscosity 30s, degree of ripeness 10ml, at sulfuric acid content is 75g/L, sodium sulphate 260g/L, zinc sulfate 15g/L, 30 ℃ of temperature solidify the acid bath spinning, produce fiber through suitable drawing-off.Fiber through washing to neutral, through desulfurization, dewater, oil, dry and make 120D/30F anti-flaming viscose long filament.
The melt-resistant flame-proof cellulose viscose index that makes is done fracture strength: do fracture strength: 1.85cN/dtex; Wet breaking strength: 1.06cN/dtex; Dried elongation at break: 16.4%; Line density deviation ratio :-1.6%; Whiteness: 81%, oil content: 0.51%; Regain: 11.1%; LOI limited oxygen index 27.0.
Claims (5)
1, melt-resistant flame-proof cellulose viscose, it is characterized in that this fiber is to adopt to contain phosphorus type flame retardant and be prepared from, dried fracture strength 〉=the 1.80cN/dtex of its finished fiber, wet breaking strength 〉=1.00cN/dtex, dried elongation at break 14.0～20.0%, line density deviation ratio-4.0～4.0%, whiteness 65～85%, oil content 0.15～3.50%, regain 8.0～13.0%, LOI limited oxygen index 27.0～32.0%.
2, melt-resistant flame-proof cellulose viscose as claimed in claim 1 is characterized in that: described fire resistance fibre adopts when the alkali cellulose yellow being ended the back dissolving and adds the pyrophosphate based flame retardant, and stirring makes anti-flaming viscose.
3, melt-resistant flame-proof cellulose viscose as claimed in claim 2 is characterized in that: the relative alpha cellulose amount of fire retardant effective content is 15～25% in the described fire resistance fibre.
4, a kind of method for preparing melt-resistant flame-proof cellulose viscose as claimed in claim 1 is characterized in that it comprises step:
A) will contain phosphorus type flame retardant joins the yellow lysate and stirs preparation fire retardant yellow lysate;
B) adopt cellulose pulp after dipping, squeezing, pulverizing, experienced, yellow, to make cellulose yellow acid fat;
C) mix stirring and dissolving with the yellow lysate that contains fire retardant to the adding of cellulose yellow acid fat, make anti-flaming viscose, and after filtration, maturation makes alpha cellulose content mass ratio 7.0～10.8%, the relative alpha cellulose effective content of fire retardant mass ratio 15～25%, contain alkali mass ratio 4.5～7.5%, viscosity 30～60s adopts 10%NH
4The spinning glue of Cl meter degree of ripeness 8～20ml;
D) will make spinning glue and spray at sulfuric acid 75～120g/l through shower nozzle, zinc sulfate 15～45g/l, sodium sulphate 260～350g/l, the coagulating bath moulding that temperature is 30～45 ℃, and make fire resistance fibre through post processing such as stretching oneself and yawn.
5, the method for preparing melt-resistant flame-proof cellulose viscose as claimed in claim 4 is characterized in that: the described phosphorus type flame retardant that contains is the pyrophosphate based flame retardant.
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| CN 200710014166 CN101037812A (en) | 2007-04-06 | 2007-04-06 | Melt-resistant flame-proof cellulose viscose and method for making same |
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| CN 200710014166 CN101037812A (en) | 2007-04-06 | 2007-04-06 | Melt-resistant flame-proof cellulose viscose and method for making same |
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| WO2011026159A1 (en) | 2009-09-01 | 2011-03-10 | Lenzing Ag | Fire-retardant cellulose fiber, use thereof, and method for the production thereof |
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2007
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