CN1295270C - Process for preparing magnesium hydroxide loose nano blocked flame retardant and products therefrom - Google Patents
Process for preparing magnesium hydroxide loose nano blocked flame retardant and products therefrom Download PDFInfo
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- CN1295270C CN1295270C CNB200510033253XA CN200510033253A CN1295270C CN 1295270 C CN1295270 C CN 1295270C CN B200510033253X A CNB200510033253X A CN B200510033253XA CN 200510033253 A CN200510033253 A CN 200510033253A CN 1295270 C CN1295270 C CN 1295270C
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- magnesium hydroxide
- nano
- flame retardant
- loose
- blocked
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- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 title claims abstract description 58
- 239000000347 magnesium hydroxide Substances 0.000 title claims abstract description 56
- 229910001862 magnesium hydroxide Inorganic materials 0.000 title claims abstract description 56
- 239000003063 flame retardant Substances 0.000 title claims abstract description 49
- 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 29
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 239000002245 particle Substances 0.000 claims abstract description 32
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000006185 dispersion Substances 0.000 claims abstract description 7
- 150000003839 salts Chemical class 0.000 claims abstract description 7
- 239000011148 porous material Substances 0.000 claims abstract description 6
- 235000020777 polyunsaturated fatty acids Nutrition 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000011777 magnesium Substances 0.000 claims abstract description 4
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 4
- 239000002088 nanocapsule Substances 0.000 claims description 18
- 239000002105 nanoparticle Substances 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 7
- 230000001804 emulsifying effect Effects 0.000 claims description 6
- -1 silicon ester Chemical class 0.000 claims description 6
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 150000002632 lipids Chemical class 0.000 claims description 3
- 229910001425 magnesium ion Inorganic materials 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 2
- 150000002500 ions Chemical class 0.000 claims description 2
- 229910021645 metal ion Inorganic materials 0.000 claims description 2
- 239000004094 surface-active agent Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 9
- 239000000126 substance Substances 0.000 abstract description 6
- 238000002360 preparation method Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000004945 emulsification Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 229910001868 water Inorganic materials 0.000 abstract description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract description 2
- 239000000920 calcium hydroxide Substances 0.000 abstract description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract description 2
- 235000014113 dietary fatty acids Nutrition 0.000 abstract description 2
- 239000000194 fatty acid Substances 0.000 abstract description 2
- 229930195729 fatty acid Natural products 0.000 abstract description 2
- 150000004665 fatty acids Chemical class 0.000 abstract description 2
- 239000003607 modifier Substances 0.000 abstract 2
- 235000011116 calcium hydroxide Nutrition 0.000 abstract 1
- 239000002775 capsule Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 239000011858 nanopowder Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- 125000000217 alkyl group Chemical group 0.000 description 5
- 239000000779 smoke Substances 0.000 description 5
- 239000004636 vulcanized rubber Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 4
- 238000011049 filling Methods 0.000 description 4
- 229920002292 Nylon 6 Polymers 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 229910001629 magnesium chloride Inorganic materials 0.000 description 3
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 229920013649 Paracril Polymers 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 2
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 241001131796 Botaurus stellaris Species 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000010574 gas phase reaction Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Images
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- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Fireproofing Substances (AREA)
Abstract
The present invention relates to a preparing method for a magnesium hydroxide loose nanometer particle blocked flame retardant and a product thereof of the flame retardant, which belongs to the manufacturing industry of inorganic chemical nanometer materials. In the present invention, after the surfaces of nanometer particles are wrapped by a surface modifier in the preparation on the basis that the surfaces of nanometer particles have gas adsorbability, high-speed exiguous bubble flow is led in, and high inflation, dispersion, homogenizing and emulsification are carried out; therefore, a large amount of gas is filled among particles of produced nanometer capsules to form a porous material, and the magnesium hydroxide loose nanometer particle blocked flame retardant is prepared. The present invention has the advantages of simple device and smooth technology, and scale production can be implemented. In the preparing method, in a bubble cap disc type stirrer, a water soluble salt or oxide of magnesium is used as a raw material, NH3. H2O, NaOH or Ca(OH)2 is used as a precipitant, and at least one of fatty acid, poly unsaturated fatty acid, a salt of the poly unsaturated fatty acid, etc. is used as a surface modifier; then the components are separated and purified; the magnesium hydroxide loose nanometer particle blocked flame retardant is prepared, and at least one dimension of the composed magnesium hydroxide particles is between 1 to 100 nm in three-dimensional space.
Description
[technical field]
The present invention relates to the manufacture method of the loose type nano blocked flame retardant of magnesium hydroxide, belong to inorganic chemical industry nano material production.
[background technology]
The inorganic materials magnesium hydroxide is the type of the dosing fire retardant of macromolecular material, compare with similar inorganic combustion inhibitor, magnesium hydroxide has lot of advantages: (one) magnesium hydroxide have fire-retardant, eliminate smoke and fill triple functions, give the smokeless property of material, non-corrosiveness, can obtain better fire-retardant and smoke effect; (2) magnesium hydroxide produce, use and discarded process in all unharmful substance dischargings, do not cause environmental pollution; (3) the initial heat decomposition temperature of magnesium hydroxide is 340 ℃, and is complete to 490 ℃ of decomposition, higher 140 ℃ than the decomposition temperature of aluminium hydroxide.Its total caloric receptivity is 44.8KJ/mol, than total caloric receptivity high approximately 17% of aluminium hydroxide.Therefore, it can bear higher processing temperature, helps accelerating extrusion molding speed in products production, shortens molding cycle; (4) magnesium hydroxide except that self dewaters, can also promote the incarbonization of polymkeric substance when combustion decomposition, forms protective layer, has given play to better flame retardant effect; (5) magnesium hydroxide and other fire retardant are used and show good flame retardant synergistic effect.Therefore, in recent years, magnesium hydroxide is paid much attention to as fire retardant, and development is very fast.Consistently both at home and abroad think that magnesium hydroxide will become main inorganic combustion inhibitor, using magnesium hydroxide is one of important directions of fire retardant development.But, because the particle of common flame retardant of magnesium hydroxide is bigger, being difficult for disperseing, molecule has very strong polarity, and dispersiveness and consistency are all very poor in macromolecular material, cause the mechanical property of fire retardant material sharply to descend.At present, solution to this problem is with the magnesium hydroxide particle refinement, makes fine powder, sub-micro fine powder body or nano-powder.Fire-retardant, the smoke effect of magnesium hydrate nano powder is good than fine powder and sub-micro fine powder body all, and it is better particularly to strengthen filling effect, is developing direction.But there is certain problem again in nano-powder, makes between the nanoparticle as the high surface energy of nano-powder and very easily reunites.General magnesium hydrate nano powder is the fine particle closely that is formed by several nanoparticles reunions, i.e. tight type nanoparticle powder.This tight type nanoparticle powder is difficult to disperse in macromolecular material, still can reduce the mechanical strength of fire retardant material.Simultaneously, in preparing this tight type nanoparticle powder process, filtration difficulty, washing difficulty, dry difficulty cause on the technology much to bother.And this tiny powder is easy to fly upward, and causes environmental pollution easily.BeiJing, China university of chemical technology has proposed " a kind of nano-magnesium hydrate fire retardant material preparation novel process " by three people such as contriver Song Fang China, obtain Chinese invention patent, Granted publication number is CN1128199C, and on November 19 2003 Granted publication day, the patent No. is 01141787.0.Its to the effect that utilize purified magnesium chloride solution that old bittern or magnesite obtains and industrial ammonia or ammonia are raw material, adopt hypergravity (rotating packed bed) technology, utilize liquid-liquid phase reaction or liquid-gas-phase reaction mode, the preparation nano-magnesium hydrate fire retardant.This invented technology has solved traditional technology complexity, cost height, and shortcoming such as grain diameter is inhomogeneous and wayward.But serious analysis, this invented technology still has certain weakness: the cost of equipment of acquiring is higher, and technological process and products obtained therefrom are also unsatisfactory, still have improved necessity.The present invention is exactly the deficiency at traditional technology and the existence of above-mentioned technology, and proposes a kind of more rational preparation method, and product is nano blocked for loose type.
[summary of the invention]
The manufacture method that the purpose of this invention is to provide the loose type nano blocked flame retardant of magnesium hydroxide, it is in having the reactor that produces the high speed bubble flow, utilize nanoparticle surface to have the performance of a large amount of gases of absorption, in the loose type nanoparticle process of preparation magnesium hydroxide, after surface-modifying agent coats, feed the trickle bubble flow of high speed, powerful inflation, disperse, homogeneous and emulsification, make the magnesium hydroxide Nano capsule particle surface of generation adsorb a large amount of gases, charge into gas between the Nano capsule particle and become loose, form porous material, after filtration, washing and dry makes the loose type nano blocked flame retardant of magnesium hydroxide.Realize that the step that the present invention taked is such:
One, raw material:
1, the water-soluble salt of magnesium or oxide compound
General molecular formula: MCl
2, MSO
4, MO, M is a magnesium ion
The place of production: Guangzhou is commercial
2, sinking agent
(1). ammoniacal liquor
Molecular formula: NH
3H
2O
The place of production: Guangzhou is commercial
(2). sodium hydroxid
Molecular formula: NaOH
The place of production: Guangzhou is commercial
(3). calcium hydroxide
Molecular formula: Ca (OH)
2
The place of production: applied chemistry institute in Zhongshan city's provides
Two, surface-modifying agent
1, lipid acid
General molecular formula: RCOOH R is an alkyl
The place of production: the Zhongshan city purchases
2, poly-unsaturated fatty acids
General molecular formula:
R is that H or alkyl X are H or alkyl
The place of production: the Zhongshan city purchases
3, silicon ester, i.e. organoalkoxysilane
General molecular formula: Si (OR)
4R is an alkyl
The place of production: the Zhongshan city purchases
4, titanic acid ester, i.e. titanate coupling agent
General molecular formula: Ti (OR)
4R is an alkyl
The place of production: the Zhongshan city purchases
Three, chemical equation:
Four, conversion unit, step and mechanism
(1), conversion unit:
Title model: NA-1 series, bubble cap dish type agitator reactor
The place of production: Zhongshan city's applied chemistry Research Institute
(2), reactions steps and mechanism:
1. in bubble cap dish type agitator reactor, under 15-80 ℃ temperature, be raw material with the water-soluble salt or the oxide compound of magnesium, use NH
3H
2O, NaOH or Ca (OH)
2Be sinking agent, agitator produces the high speed bubble flow, and powerful inflation, dispersion, homogeneous and emulsifying effect, reaction times 30-90 minute, generates magnesium hydroxide nano-particle;
2. the surperficial properties-correcting agent of at least a work in selected fatty acid and poly-unsaturated fatty acids and salt, silicon ester, titanic acid ester or ionic and the nonionic surface active agent simultaneously, original position coats, and generates magnesium hydroxide Nano capsule particle;
3. react the magnesium hydroxide Nano capsule particle that generates, under brute force inflation, dispersion, homogeneous and the emulsifying effect of the trickle bubble flow of high speed, make and charge into a large amount of gases between the Nano capsule particle and become loose, form porous material, subsequently after filtration, washing and dry, make the loose type nano blocked flame retardant of magnesium hydroxide.
4. the loose type nano blocked flame retardant outward appearance of magnesium hydroxide is loose type block shape, consists of the yardstick of magnesium hydroxide particles, has one dimension at least in 1～100nm scope in three-dimensional space.
5. in actual production, the magnesium ion in the loose type Nano capsule particle block of magnesium hydroxide is partly replaced by other metal ion, and hydroxide radical is partly replaced by other negative ion becomes the complex hydroxide nano blocked flame retardant.
6. through experiment, the loose type Nano capsule particle block of magnesium hydroxide to organic polymer material have significantly fire-retardant, eliminate smoke and strengthen and fill function.
In sum, we can to understand advantage of the present invention as follows:
(1) adopts bubble cap dish type agitator inflation in a large number between magnesium hydroxide Nano capsule particle with powerful inflation, dispersion, homogeneous and emulsification function, produce loose type Nano capsule particle block, make filtration, washing and drying process simple and easy to do, equipment is simple, and cost is low; (2) owing to add surface-modifying agent in reaction process, original position coats, and makes technology become more smooth; (3) compare with general tight type nano-powder, loose type Nano capsule particle block does not fly upward, do not pollute the environment, but implement scale production; (4) product to macromolecular material have good fire-retardant, eliminate smoke and strengthen and fill function.
[description of drawings]
Further set forth the whole process of manufacture method of the present invention below in conjunction with description of drawings and specific embodiments.
Accompanying drawing 1 is the schema of the loose type nano blocked flame retardant manufacture method of magnesium hydroxide of the present invention.
[specific embodiments]
Embodiment 1
Has bubble cap dish type agitator (number of patent application: in the reactor 200420044185.8), (10mol) is soluble in water with magnesium chloride, add ammoniacal liquor (25-28%, 2000ml), abundant stirring reaction, add the lipid acid surface-modifying agent, original position coats, the trickle bubble flow of high speed that utilizes the bubble cap dish type agitator to produce, and powerful inflation, disperse, homogeneous and emulsifying effect, make the abundant adsorbed gas of magnesium hydroxide Nano capsule particle of generation, or the Nano capsule particle is adsorbed on bubble surface, charges into a large amount of gases and loosen between the Nano capsule particle, forms porous material, after filtration, after washing and the drying, make the loose type nano blocked flame retardant of magnesium hydroxide.The loose type nano blocked flame retardant of the magnesium hydroxide that makes detects through scanning electron microscope, and the looks of magnesium hydroxide nano-particle are plates, and thickness is below 50nm, and length accounts for more than 85% at the nanoparticle below the 180nm.By mixing, this fire retardant just can be distributed in paracril (NBR) cross-linked rubber and go, and shows the nano material function of this fire retardant significantly.When the amount of filling of fire retardant be butadiene-acrylonitrile-rubber vulcanized rubber 100% the time, the loose type nano blocked flame retardant of magnesium hydroxide is to butadiene-acrylonitrile-rubber vulcanized rubber Effect on Performance data such as table 1.
The loose type nano blocked flame retardant of table 1. magnesium hydroxide is to the butadiene-acrylonitrile-rubber vulcanized rubber Effect on Performance.
| Project | Detect data | Performance variation % | |
| NBR | 100 | 100 | / |
| Fire retardant | 0 | 100 | / |
| 100% stress at definite elongation/Mpa | 1.34 | 1.88 | 40.3 |
| Tensile strength/Mpa | 3.28 | 9.05 | 175.9 |
| Tensile yield/% | 315 | 630 | 100 |
| Tear strength/KN/m | 12.32 | 22.37 | 81.6 |
| Shore a hardness/degree | 48 | 63 | 31.3 |
| Oxygen index/% | 18.5 | 27.0 | 45.9 |
When the amount that adds fire retardant is 100 parts, the oxygen index of fire-retardant butadiene-acrylonitrile-rubber vulcanized rubber is increased to 27.0 by 18.5 of pure paracril, tensile strength, tensile yield and tear strength respectively by 1.34Mpa, 315% and 12.32KN/m be increased to 1.88Mpa, 630% and 22.37KN/m, flame retardant resistance and mechanical property all increase considerably, show that the loose type Nano capsule particle of magnesium hydroxide has evenly spread in the butadiene-acrylonitrile-rubber vulcanized rubber, flame retardant properties and enhancing filling properties are good, fully show the nano functional of this fire retardant.
Embodiment 2
In reactor with bubble cap dish type agitator, to measure and determine, the magnesium chloride solution that concentration is certain (10mol), react with certain density NaOH (containing NaOH15mol), add tensio-active agent again, original position coats, the trickle bubble flow of high speed that utilizes the bubble cap dish type agitator to produce, powerful inflation, dispersion, homogeneous and emulsifying effect, make the magnesium hydroxide Nano capsule particle of generation form loose porous material, after filtration, after washing and the drying, make the loose type nano blocked flame retardant of magnesium hydroxide.The X-ray diffractogram of the loose type nano blocked flame retardant of the magnesium hydroxide that makes is 17.8 ° at 2 θ, 37.5 °, 50.1 ° and 58.1 °, the diffraction peak of typical magnesium hydroxide crystal occurs.Detect through the Ma Erwen particle size analyzer, particle diameter accounts for 89.5% at the particle of 90.18nm.This kind nano-sized magnesium hydroxide adds in the Nylon 6, and when addition was 30%, tensile strength was increased to 76Mpa by the 45Mpa of pure nylon 6, shows outstanding enhancing filling effect.This nano-sized magnesium hydroxide and red phosphorus and usefulness, when magnesium hydroxide and red phosphorus consumption were respectively 30phr and 20phr, the flame retardant properties of nylon 6 composite material reached the V-0 level.
Claims (2)
1, the manufacture method of the loose type nano blocked flame retardant of magnesium hydroxide is a raw material with the water-soluble salt or the oxide compound of magnesium, NH
3H
2O, NaOH or Ca (OH)
2Be sinking agent, it is characterized in that:
(1) in having the reactor that can produce high speed bubble flow and powerful inflation, dispersion, homogeneous and emulsifying effect, reacts, generate magnesium hydroxide nano-particle;
(2) with lipid acid, poly-unsaturated fatty acids and salt, silicon ester, titanic acid ester or ionic and the surperficial properties-correcting agent of at least a work of nonionic surface active agent, carry out original position and coat, generate magnesium hydroxide Nano capsule particle;
(3) the magnesium hydroxide Nano capsule particle of reaction generation, under brute force inflation, dispersion, homogeneous and the emulsifying effect of the trickle bubble flow of high speed, make and charge into a large amount of gases between the Nano capsule particle and loosen, form porous material, separate desired product and purifying subsequently, make the loose type nano blocked flame retardant of magnesium hydroxide;
(4) the loose nano blocked outward appearance of type of magnesium hydroxide is loose type block shape, consists of the yardstick of magnesium hydroxide particles, has one dimension at least in 1～100nm scope in three-dimensional space.
2, the manufacture method of the loose type nano blocked flame retardant of magnesium hydroxide according to claim 1, it is characterized in that the magnesium ion of the loose type of magnesium hydroxide in nano blocked partly replaced the complex hydroxide nano blocked flame retardant that hydroxide radical is partly replaced by other negative ion by other metal ion.
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| Application Number | Priority Date | Filing Date | Title |
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|---|---|---|---|
| CNB200510033253XA CN1295270C (en) | 2005-02-23 | 2005-02-23 | Process for preparing magnesium hydroxide loose nano blocked flame retardant and products therefrom |
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| CN1295270C true CN1295270C (en) | 2007-01-17 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1341694A (en) * | 2001-09-19 | 2002-03-27 | 北京化工大学 | Preparation process of magnesium hydroxide fire-retarding nanomaterial |
| CN1359853A (en) * | 2000-12-19 | 2002-07-24 | 中国科学技术大学 | Acidular or flaky nano magnesium hydroxide and its preparing process |
| CN1361062A (en) * | 2000-12-28 | 2002-07-31 | 北京化工大学 | Prepn of nanometer-sized magnesium hydroxide |
| CN1513761A (en) * | 2002-12-31 | 2004-07-21 | 浙江大学 | Preparation method of nano-level magnesium hydroxide |
| CN1542036A (en) * | 2003-11-04 | 2004-11-03 | 上海大学 | Method for manufacturing nanometer magnesium hydroxide fire retardant |
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- 2005-02-23 CN CNB200510033253XA patent/CN1295270C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1359853A (en) * | 2000-12-19 | 2002-07-24 | 中国科学技术大学 | Acidular or flaky nano magnesium hydroxide and its preparing process |
| CN1361062A (en) * | 2000-12-28 | 2002-07-31 | 北京化工大学 | Prepn of nanometer-sized magnesium hydroxide |
| CN1341694A (en) * | 2001-09-19 | 2002-03-27 | 北京化工大学 | Preparation process of magnesium hydroxide fire-retarding nanomaterial |
| CN1513761A (en) * | 2002-12-31 | 2004-07-21 | 浙江大学 | Preparation method of nano-level magnesium hydroxide |
| CN1542036A (en) * | 2003-11-04 | 2004-11-03 | 上海大学 | Method for manufacturing nanometer magnesium hydroxide fire retardant |
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