CN102942750B - Environment-friendly type flame retardant additive used for soft PVC product, and preparation method and application thereof - Google Patents
Environment-friendly type flame retardant additive used for soft PVC product, and preparation method and application thereof Download PDFInfo
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- CN102942750B CN102942750B CN201210406081.6A CN201210406081A CN102942750B CN 102942750 B CN102942750 B CN 102942750B CN 201210406081 A CN201210406081 A CN 201210406081A CN 102942750 B CN102942750 B CN 102942750B
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- sepiolite
- retardant additive
- bismuth oxide
- flame
- flame retardant
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 51
- 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 title claims abstract description 34
- 239000000654 additive Substances 0.000 title claims abstract description 25
- 230000000996 additive effect Effects 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 title description 3
- 239000004113 Sepiolite Substances 0.000 claims abstract description 48
- 229910052624 sepiolite Inorganic materials 0.000 claims abstract description 48
- 235000019355 sepiolite Nutrition 0.000 claims abstract description 48
- 229910000416 bismuth oxide Inorganic materials 0.000 claims abstract description 32
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000000835 fiber Substances 0.000 claims abstract description 24
- 239000002245 particle Substances 0.000 claims abstract description 10
- 238000005406 washing Methods 0.000 claims abstract description 9
- 238000004945 emulsification Methods 0.000 claims abstract description 7
- 229910052797 bismuth Inorganic materials 0.000 claims abstract description 4
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000007822 coupling agent Substances 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 2
- 235000021355 Stearic acid Nutrition 0.000 claims description 2
- 150000004645 aluminates Chemical class 0.000 claims description 2
- 238000009775 high-speed stirring Methods 0.000 claims description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 239000008117 stearic acid Substances 0.000 claims description 2
- 239000000779 smoke Substances 0.000 abstract description 10
- 238000012986 modification Methods 0.000 abstract description 9
- 230000004048 modification Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 238000002485 combustion reaction Methods 0.000 abstract description 7
- 239000002131 composite material Substances 0.000 abstract description 7
- 239000003929 acidic solution Substances 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 239000003607 modifier Substances 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000010494 dissociation reaction Methods 0.000 abstract 1
- 230000005593 dissociations Effects 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 239000004800 polyvinyl chloride Substances 0.000 description 30
- 229920000915 polyvinyl chloride Polymers 0.000 description 29
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 12
- 239000000243 solution Substances 0.000 description 10
- 238000012360 testing method Methods 0.000 description 9
- 239000001301 oxygen Substances 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 238000001746 injection moulding Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 4
- 150000001622 bismuth compounds Chemical class 0.000 description 4
- 239000012757 flame retardant agent Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- 229910052787 antimony Inorganic materials 0.000 description 3
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 230000000979 retarding effect Effects 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 238000010792 warming Methods 0.000 description 3
- 229910017090 AlO 2 Inorganic materials 0.000 description 2
- 239000004902 Softening Agent Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- 235000015655 Crocus sativus Nutrition 0.000 description 1
- 244000124209 Crocus sativus Species 0.000 description 1
- 229940058905 antimony compound for treatment of leishmaniasis and trypanosomiasis Drugs 0.000 description 1
- 150000001463 antimony compounds Chemical class 0.000 description 1
- GHPGOEFPKIHBNM-UHFFFAOYSA-N antimony(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Sb+3].[Sb+3] GHPGOEFPKIHBNM-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- UKRHKPCWTGYGIN-UHFFFAOYSA-K bis[(4,7,7-trimethyl-3-oxobicyclo[2.2.1]heptane-2-carbonyl)oxy]bismuthanyl 4,7,7-trimethyl-3-oxobicyclo[2.2.1]heptane-2-carboxylate Chemical compound [Bi+3].C1CC2(C)C(=O)C(C([O-])=O)C1C2(C)C.C1CC2(C)C(=O)C(C([O-])=O)C1C2(C)C.C1CC2(C)C(=O)C(C([O-])=O)C1C2(C)C UKRHKPCWTGYGIN-UHFFFAOYSA-K 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 239000000039 congener Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000005078 molybdenum compound Substances 0.000 description 1
- 150000002752 molybdenum compounds Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 231100000957 no side effect Toxicity 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000013974 saffron Nutrition 0.000 description 1
- 239000004248 saffron Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- -1 silicon ester Chemical class 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Fireproofing Substances (AREA)
Abstract
The invention discloses an environment-friendly type flame retardant additive used for a soft PVC product, and a preparation method and an application thereof. The flame retardant additive is obtained by the following steps of performing high-speed emulsification dissociation on sepiolite in a weak acidic solution to prepare a single-fiber sepiolite sol; adding bismuth oxide particles in the sepiolite sol, heating for reaction, filtering, washing and drying to obtain bismuth oxide sepiolite composite fibers; and finally adding modifier in the bismuth oxide sepiolite composite fibers for modification. The prepared bismuth-containing sepiolite composite flame retardant is uniformly distributed in fiber diameter. The diameter of a single fiber can be smaller than 0.1 [mu]m; and bulk density is lower than 1.0 g/cm<3>. The flame retardant additive has high specific surface area, good flame retardant effect, can effectively lower smoke volume of the soft PVC product in a combustion process, and is an environment-friendly type flame retardant additive.
Description
Technical field
The invention belongs to fire retardant technical field, be specifically related to environmental-protection flame-retardant additive and methods for making and using same thereof for a kind of flexible PVC goods.
Background technology
Polyvinyl chloride (PVC) is to use up to now to obtain one of macromolecule chemical industry material the most widely, due to features such as its processing characteristics are good, cheap, manufacturing process is simple, and is widely used in the fields such as industry, agricultural.PVC material is divided into the soft and large class of hard two, hard PVC because not adding micromolecular softening agent without considering flame retarding and smoke suppressing properties, flexible PVC is a large amount of micromolecular such as softening agent such as DOP because of having added, and it is very easily burnt, and also can produce a large amount of smog simultaneously.Flexible PVC material exists and holds incendive defect, and the toxic gases such as the NO containing in the toxic smoke producing in combustion processes, CO and HCl are directly threatening the mankind's life security in fire.Along with the development of national economy, in industry and place of public amusement, people are to the fire-retardant of PVC electric wire, home decoration material and press down cigarette and have higher requirement.The scheme that solves at present the flame-retardant smoke inhibition of flexible PVC goods is mainly to add inorganic combustion inhibitor as Sb
2o
3, Al (OH)
3, Mg (OH)
2, Zn (AlO
2)
2, ZnB
2o
4deng inorganic combustion inhibitor and collaborative organic bromine thereof, it is flame-retardant system, the collaborative molybdenum compound flame-retardant system with smoke suppressing effect, the collaborative organic fire-resisting system of antimony has the large shortcoming of raw cigarette amount, totally unfavorable to escaping during fire, because the toxicity of antimony compounds starts to forbid antimony in developed country, be simultaneously flame-retardant system; Inorganic Al (OH)
3, Mg (OH)
2, Zn (AlO
2)
2, ZnB
2o
4deng flame-retardant system, addition is large, and the mechanical property of flexible PVC goods is produced to detrimentally affect, therefore for the novel flame-retardant of flexible PVC goods, presses down smoke system and still by industry, is expected.
Bismuth and antimony belong to congeners, in physicochemical property, there is similarity, recently research shows that bismuth compound has fire retardation too to flexible PVC goods, bismuth compound is also with the effect that presses down cigarette simultaneously, but the proportion of bismuth compound is larger 60% than weisspiessglanz, at PVC goods, adds man-hour, and bismuth oxide particle is difficult to be uniformly dispersed in goods, therefore, bismuth oxide is difficult to the effect of performance application in the application of flame-retardant smoke inhibition.
Summary of the invention
Object of the present invention is intended to solve the high bulk density of bismuth oxide flame-retardant additive, is difficult to disperse and cannot improves the defect of the flame-retardant smoke inhibition effect of flexible PVC goods, for solving the problems of the technologies described above the present invention, adopts following technical scheme:
A preparation method for environmental-protection flame-retardant additive for flexible PVC goods, comprises the following steps successively:
(1) sepiolite is carried out in weakly acidic solution to emulsify at a high speed and dissociate, prepare filamentary sepiolite colloidal sol;
(2) in sepiolite colloidal sol, add bismuth oxide particle, reacting by heating, filters, washing, the dry bismuth oxide sepiolite fibre that obtains;
(3) will in bismuth oxide sepiolite fibre, add modifier modification to obtain flame-retardant additive.
The detailed process of step (1) is as follows:
Sepiolite is scattered in water, regulator solution pH value 1.5 ~ 7, and sepiolite solid mass content in solution is 2% ~ 20%, high-speed stirring emulsification 1h, stirring velocity 3000rpm to 10000rpm, time 10min ~ 60min, obtains filamentary sepiolite colloidal sol;
Above-mentioned pH value regulates with HCl, H
2sO
4, NH
4cl, (NH
4)
2sO
4, NaCl-HCl, KCl-HCl, K
2sO
4-H
2sO
4or Na
2sO
4-H
2sO
4solution.
The described bismuth oxide particle diameter of step (2) is 0.1 ~ 50 μ m, and bulk density is not less than 1.0g/cm
3, crystalline phase is one or more in mutually of α, β, γ and δ.
The detailed process of step (2) is as follows:
Bismuth oxide particle is added in sepiolite colloidal sol, and bismuth oxide add-on is 1 ~ 10% of sepiolite colloidal sol quality, is heated with stirring to 90 ℃ ~ 160 ℃, react 1 ~ 8 hour, cooling, particulate oxidation bismuth disappears, filter, the solid obtaining is through washing, the dry bismuth oxide sepiolite fibre that obtains.
The detailed process of step (3) is as follows:
In bismuth oxide sepiolite fibre, add properties-correcting agent, properties-correcting agent add-on is 0.1 ~ 3% of bismuth oxide sepiolite fibre quality, stirs 1 ~ 8 hour cooling rear acquisition flame-retardant additive at the temperature of room temperature to 90 ℃.
Described properties-correcting agent comprises the polymkeric substance that silane coupling agent, titanate coupling agent, aluminate coupling agent, stearic acid, stearate or molecular weight are less than 10000.
A kind of flexible PVC goods are the flame-retardant additive being prepared from by aforesaid method with environmental-protection flame-retardant additive.
Above-mentioned flexible PVC goods add in flexible PVC goods with environmental-protection flame-retardant additive, for fire-retardant.
Above-mentioned flexible PVC goods add in flexible PVC goods with environmental-protection flame-retardant additive, for fire-retardant and have concurrently and press down hood.Concrete adding procedure is: take 100 parts of flexible PVC resin-oatmeals, 40 parts of dioctyl phthalate (DOP)s, 3 parts of stablizers, CaCO
330 parts, 3 parts of flame-retardant additives, high-speed mixing is even, extrudes moulding.
The bismuth oxide sepiolite fibre that above-mentioned steps (2) obtains is viewed as ultimate fibre and distributes under fiberscope; Length is 2 ~ 15 μ m, and this macrofiber is after surface modification, and bulk density is less than 1.0g/cm
3, be conducive to the processing of flexible PVC goods.
Above-mentioned steps (2) is filtered, and the filtrate after washing and washing lotion are circulated to the sepiolite emulsification process that dissociates, and makes the aqueous solution in whole production technique for recycling, and both escapable cost, also can prevent the pollution of the environment.
Bismuth oxide sepiolite composite flame-retardant agent of the present invention and traditional Sb
2o
3fire retardant is compared, and when addition is 3 parts, the oxygen index of flexible PVC goods rises to 31.4 by 29.5, nearly 2 units that risen, and the amount of being fuming obviously reduces, and flame retarding efficiency increases.Under the condition of same flame retarding and smoke suppressing properties, because saving the additive cost that makes flexible PVC that adds of smoke suppressant, and bismuth compound has no side effect to human body, is environmentally friendly flame-retardant additive.
Accompanying drawing explanation
Fig. 1 is the micro-structure diagram of the fire retardant of embodiment 1 preparation;
Fig. 2 is the micro-structure diagram of the fire retardant of embodiment 2 preparations;
Fig. 3 is the micro-structure diagram of the fire retardant of embodiment 3 preparations.
Embodiment:
Below in conjunction with embodiment, be intended to further illustrate the present invention, and unrestricted the present invention.
Embodiment 1
20g sepiolite is scattered in 200ml water, with the HCl solution of 0.1M, regulates pH3.0, and at homogenizer (stirring velocity 5000rpm) emulsification 1h, sepiolite is dispersed in water solution system; Weigh α-Bi of 10g 20 μ m
2o
3(bulk density is 3.0g/cm
3) add in sepiolite aqueous dispersion, continue to stir, be warming up to 90 ℃, react particle α-Bi 4 hours
2o
3disappear, filter, the solid obtaining removes surface adsorption ion through water washing, and 70 ~ 150 ℃ of dry 2s of air draught, obtain flaxen pressed powder (being bismuth oxide sepiolite fibre sample) 30g; By 0.5% of bismuth oxide sepiolite fibre sample quality, weigh distearyl acyl-oxygen sec.-propyl aluminate coupling agent and mix with it, 80 ℃ are stirred 3 hours, obtain the composite flame-retardant agent of modification, the bulk density 0.7g/cm of fire retardant
3, the microscopic appearance of fire retardant as shown in Figure 1.
Accurately take 100 parts of flexible PVC resin-oatmeals, 40 parts of dioctyl phthalate (DOP)s (DOP), 3 parts of stablizers, CaCO
330 parts, 3 parts of the bismuth oxide sepiolite conjugated fibre fire retardants after surface modification mix in high-speed mixer.Then the powder mixing is extruded on the twin screw extruder of 165 ℃ ± 2 ℃ of temperature, injection moulding test bars in injection moulding machine then, test bars is by national standard 127 * 12.7 * 3.2mm.In HC-2 type oxygen index, test, the oxygen index that obtains PVC goods is 30.4, and during sample combustion, the amount of being fuming is few, good flame retardation effect.
Embodiment 2
20g sepiolite is scattered in 200ml water, with the NH of 0.1M
4cl solution regulates pH4.5, and at homogenizer (stirring velocity 8000rpm) emulsification 1h, sepiolite is dispersed in water solution system; Weigh β-Bi of 10g 5 μ m
2o
3(bulk density 1.5g/cm
3) add in sepiolite aqueous dispersion, continue to stir, be warming up to 120 ℃, react particle β-Bi 3 hours
2o
3disappear, filter, the solid obtaining removes surface adsorption ion through water washing, and 70 ~ 150 ℃ of dry 2s of air draught, obtain saffron pressed powder (being bismuth oxide sepiolite fibre sample) 30g; By 0.5% of bismuth oxide sepiolite fibre sample quality, weigh KH-550 type silicon ester coupling agent and mix with it, 60 ℃ are stirred 5 hours, obtain the composite flame-retardant agent of modification, the bulk density 0.5g/cm of fire retardant
3, the microscopic appearance of fire retardant as shown in Figure 2.
Accurately take 100 parts of flexible PVC resin-oatmeals, 40 parts of dioctyl phthalate (DOP)s (DOP), 3 parts of stablizers, CaCO
330 parts, 3 parts of the bismuth oxide sepiolite conjugated fibre fire retardants after surface modification mix in high-speed mixer.Then the powder mixing is extruded on the twin screw extruder of 165 ℃ ± 2 ℃ of temperature, injection moulding test bars in injection moulding machine then, test bars is by GB standard 127 * 12.7 * 3.2mm.In HC-2 type oxygen index, test, the oxygen index that obtains PVC goods is 31.0, and during sample combustion, the amount of being fuming is few, good flame retardation effect.
Embodiment 3
Get the solution 200ml after filtration in embodiment 2, claim 10g sepiolite to be scattered in wherein, with (the NH of 0.1M
4)
2sO
4solution regulates pH4.0, and at homogenizer (stirring velocity 8000rpm) emulsification 1h, sepiolite is dispersed in water solution system; Weigh β-Bi of 10g 20 μ m
2o
3(bulk density 3.08g/cm
3) add in sepiolite aqueous dispersion, continue to stir, be warming up to 160 ℃, react particle β-Bi 2 hours
2o
3disappear, filter, the solid obtaining removes surface adsorption ion through water washing, and 70 ~ 150 ℃ of dry 2s of air draught, obtain yellow pressed powder (being bismuth oxide sepiolite fibre sample) 20g; By 0.5% of bismuth oxide sepiolite fibre sample quality, weigh sec.-propyl three (dioctyl phosphoric acid acyloxy) titanate coupling agent and mix with it, 80 ℃ are stirred 3 hours, obtain the composite flame-retardant agent of modification, the bulk density 0.45g/cm of fire retardant
3.
Accurately take 100 parts of flexible PVC resin-oatmeals, 40 parts of dioctyl phthalate (DOP)s (DOP), 3 parts of stablizers, CaCO
330 parts, 3 parts of the bismuth oxide sepiolite conjugated fibre fire retardants after surface modification mix in high-speed mixer.Then the powder mixing is extruded on the twin screw extruder of 165 ℃ ± 2 ℃ of temperature, then injection moulding test bars in injection moulding machine, is 127 * 12.7 * 3.2mm by national standard test bars.In HC-2 type oxygen index, test, the oxygen index that obtains PVC goods is 31.4, and during sample combustion, the amount of being fuming is few, good flame retardation effect.
Claims (3)
1. a preparation method for environmental-protection flame-retardant additive for flexible PVC goods, is characterized in that, comprises the following steps successively:
(1) sepiolite is scattered in water, regulator solution pH value 1.5～7, and sepiolite solid mass content in solution is 2%～20%, high-speed stirring emulsification 1h, stirring velocity 3000rpm to 10000rpm, time 10min～60min, obtains filamentary sepiolite colloidal sol;
(2) bismuth oxide particle is added in sepiolite colloidal sol, bismuth oxide add-on is 1～10% of sepiolite colloidal sol quality, is heated with stirring to 90 ℃～160 ℃, react 1～8 hour, cooling, particulate oxidation bismuth disappears, filter, the solid obtaining is through washing, the dry bismuth oxide sepiolite fibre that obtains; Described bismuth oxide particle diameter is 0.1～50 μ m, and bulk density is not less than 1.0g/cm
3, crystalline phase is one or more in mutually of α, β, γ and δ;
(3) in bismuth oxide sepiolite fibre, add properties-correcting agent, properties-correcting agent add-on is 0.1～3% of bismuth oxide sepiolite fibre quality, stirs 1～8 hour cooling rear acquisition flame-retardant additive at the temperature of room temperature to 90 ℃;
Described properties-correcting agent comprises the polymkeric substance that silane coupling agent, titanate coupling agent, aluminate coupling agent, stearic acid, stearate or molecular weight are less than 10000.
2. a flexible PVC goods environmental-protection flame-retardant additive, is characterized in that, described flame-retardant additive is the flame-retardant additive that the method by claim 1 is prepared from.
3. an application method for environmental-protection flame-retardant additive for flexible PVC goods, is characterized in that, flame-retardant additive claimed in claim 2 is added in flexible PVC goods, for fire-retardant.
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| CN201210406081.6A CN102942750B (en) | 2012-10-23 | 2012-10-23 | Environment-friendly type flame retardant additive used for soft PVC product, and preparation method and application thereof |
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| US11014030B2 (en) | 2016-02-17 | 2021-05-25 | Hollingsworth & Vose Company | Filter media including flame retardant fibers |
| US10252200B2 (en) | 2016-02-17 | 2019-04-09 | Hollingsworth & Vose Company | Filter media including a filtration layer comprising synthetic fibers |
| CN106832421A (en) * | 2017-01-05 | 2017-06-13 | 东莞市宏泰基阻燃材料有限公司 | A kind of polyvinyl chloride wall decoration thin-film material fire retardant and preparation method thereof |
| CN107501972B (en) * | 2017-10-16 | 2019-08-30 | 江苏增光复合材料科技有限公司 | A kind of preparation method of high-compatibility suppression cigarette asphalt material |
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