CN102040790B - A kind of fireproof polyvinyl acetate emulsion and preparation method thereof - Google Patents
A kind of fireproof polyvinyl acetate emulsion and preparation method thereof Download PDFInfo
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Abstract
The present invention is a kind of fireproof polyvinyl acetate emulsion and preparation method thereof, there is stronger Hyarogen-bonding between mineral filler and polyvinyl acetate (PVA) or polyvinyl acetate copolymer while that main fire retardant compounds ammonium polyphosphate particle diameter in fireproof polyvinyl acetate emulsion provided by the invention being less and particle is less, avoid the series of problems that the additional fireproofing agent of prior art brings.Fireproof polyvinyl acetate emulsion disclosed by the invention has good cohesive strength and can the performance such as film forming, as being of great value in indoor and outdoor facing fire retardant coating, weave cotton cloth fire-resistant finish agent, fire resistant adhesive etc.Simultaneously fireproof polyvinyl acetate emulsion disclosed by the invention unharmful substance in production and use procedure produces, and production technique is simple, be easy to control.
Description
Technical field
The invention belongs to fireproof polyvinyl acetate emulsion and preparation method thereof technical field, be specifically related to a kind of Halogen high-efficiency fireproof type polyvinyl acetate emulsion and preparation method thereof.
Background technology
From the thirties in 20th century, after organic polymer material enters all respects of national economy every field and people's lives, the mankind start to face new fire threat.Reason is this kind of material overwhelming majority is inflammable or flammable.China's presence of fire 13.3 ten thousand altogether (not containing forest, grassland, army and mine) in 2008, dead 1385 people, injured 684 people, direct property loss 1,500,000,000 yuan.Therefore, the fire prevention research of macromolecular material is had important practical significance.
Polyvinyl acetate (PVA) (polyvinylacetate is called for short PVA, PVAc), also known as
polyvinyl acetate, poly-
vinyl acetate between to for plastic resin(vinylacetateresin) or
polyvinyl acetate resin.Polyvinyl acetate (PVA) is by vinyl acetate through radical polymerization, and vinyl acetate is obtained by acetic acid and acetylene, and acetic acid can be produced by acetylene again, and polyvinyl acetate (PVA) can be obtained by acetylene completely in brief.As for acetylene, calcium carbide made by its available unslaked lime and hard coal (or coke), then hydrolyzable and obtaining, also can from hydrocarbon compound as Sweet natural gas and petroleum exhaust decompose and obtain.It serves to show that polyvinyl acetate (PVA) initial production raw material sources are extremely abundant thus.Current world petroleum resource is step by step deficient, and polyvinyl acetate (PVA) will commercially have the development prospect of becoming better and better with its wide raw material sources.
Vinyl Acetate Copolymer is generally emulsion form, is the important kind in adhesive products, main as wood working milky white adhesive, Cigarette processing glue and Commercial goods labels glue.In coatings industry, PVAc is as paper finishing composition (bonding, coating), bonding strength is fine, but polyvinyl acetate (PVA) is the same with other a lot of macromolecular material, mainly be made up of C, H, O tri-kinds of elements, belonged to combustible matl, its limiting oxygen index(LOI) (LimitOxygenIndex, LOI) be about 19%, during burning, be attended by a large amount of black dense smoke and bad smell.These shortcomings of aqueous polyvinyl acetate emulsion make its Application Areas be greatly limited.Therefore, the anti-cremate design carrying out aqueous polyvinyl acetate emulsion has urgent realistic meaning.
Study the blended mode of main physically based deformation to the fire prevention of polymer emulsion, studying more emulsion is phenylpropyl alcohol (Wan Deli etc., state's outdoor building materials science and technology 2004,25 (4); Chinese patent 200610018703), silicon third (Zheng Genwen etc., Chinese material science and technology and design.2007,3:76), (Wang Qiang prints during chemical industry aminoresin.1997,12:23-25) and (Zheng Chongwei, the Shanxi chemical industry 2004,24 (2): 56 such as urea-formaldehyde resin; Chinese patent 200610027427).The fireproofing agent adopted mostly is the compound system of phosphoric acid salt, polyvalent alcohol and trimeric cyanamide or urea.Trimeric cyanamide, urea and polyvalent alcohol, when as fireproofing agent, because molecular weight is little, are easily separated out, are made fire-retardant material lose fire resistance in wet environment from mould material.
At present, the fire prevention research based on vinyl acetate homopolymerization emulsion or vinyl acetate copolymer emulsion is relatively less, and mostly is the laboratory study stage.(the coatings industry such as Liu Junhui, 2008,38 (6): 46) the Primary Study impact of polynite on acrylate and vinyl acetate emulsion fire resistance, find that polynite has certain effect in the mechanical property improving coating and fire resistance, but flameproof effect is not clearly.This patent is intended to the fire resistance improving polyvinyl acetate emulsion, and suppress it to discharge black dense smoke and bad smell in combustion, Halogen high-efficiency fireproof type polyvinyl acetate emulsion blank commercially can be replenished, expand Application Areas and the application market of polyvinyl acetate emulsion.
Summary of the invention
The object of the invention is for prior art Problems existing, a kind of new fire-type polyvinyl acetate (PVA) homopolymerization or copolymer emulsion are provided.
Another object of the present invention is to provide a kind of method preparing above-mentioned fire prevention emulsion.
Fire-type vinyl acetate provided by the invention homopolymerization or vinyl acetate copolymer emulsion, is characterized in that this emulsion is made up of vinyl acetate homopolymer or vinyl acetate copolymer and water, protective colloid, emulsifying agent, phosphorus-nitrogen fireproofing agent and filler.Vinyl acetate 10 ~ 60 parts, comonomer 0 ~ 40 part, 30 ~ 80 parts, water, emulsifying agent 0.6 ~ 7 part, protective colloid 0 ~ 7 part, phosphorous-nitrogen compounds 10 ~ 50 parts, mineral filler 0.2 ~ 10 part in fireproof polyvinyl acetate emulsion.
Comonomer used in this emulsion is one or more in the soft monomers such as ethyl propenoate, butyl acrylate, n octyl methacrylate, isoprene, dibutyl maleinate, lauryl methacrylate(LMA), amylene, methylvinylether; Protective colloid used is one or more the mixture in polyvinyl alcohol (polymerization degree 500 ~ 2400, alcoholysis degree is more than 88% or 88%), polyacrylamide, Walocel MT 20.000PV, ethyl cellulose etc.; Phosphorous-nitrogen compounds used is the ammonium polyphosphate of the polymerization degree 30 ~ 6000; Mineral filler used is the mixture of any one or more in wilkinite, diatomite, two oxyhydroxide, polynite, insoluble or indissoluble type oxyhydroxide or oxide compound etc.Emulsifying agent used is the mixed system of ionic or ionic and nonionic emulsifier.Wherein, mixed emulsifier system ionic and non-ionic type mass ratio are 1: 10 ~ 10: 1.Anionic emulsifier is be selected from any one or more of alkyl sodium sulfate salt, alkyl sulfonate sodium, glyceryl monostearate and alkylaryl sulphonate; Cationic emulsifier is be selected from any one or more in fatty amine salt, quaternary ammonium salt, tetrahydroglyoxaline, Moroxydine class, triazine derivative etc.Nonionic emulsifier is be selected from any one or more in octyl phenol Volpo S 10, nonylphenol polyethylene oxide ether, polysorbate60, tween 80, polysorbas20, class of department 80 and class 65 of department etc.
The method of the above-mentioned fireproof polyvinyl acetate emulsion of preparation provided by the invention, it is characterized in that the processing step of the method and condition as follows:
1) 0.6 ~ 7 part of emulsifying agent, 0 ~ 7 part of protective colloid, 0.2 ~ 1 part of mineral filler are joined in 20 ~ 60 parts of water, stirring and dissolving 10 ~ 60 minutes at room temperature ~ 75 DEG C;
2) 0.2 ~ 3 part of initiator is dissolved in 10 ~ 20 parts of water, and 10 ~ 60 parts of vinyl acetates and 0 ~ 40 part of comonomer are mixed.At 50 ~ 75 DEG C, instill mix monomer and initiator while stirring.Monomer and initiator dripped off at 1.0 ~ 3.5 hours;
3) monomer and initiator drip rear reaction 0.5 ~ 1.5 hour, temperature of reaction system are risen to 80 ~ 95 DEG C, and be incubated 1.0 ~ 3.0 hours, be cooled to room temperature, adjust ph is 5 ~ 11, discharging;
4) in obtained reaction system, add the polyphosphoric acid amine of 10 ~ 50 parts and add the mineral filler of 0 ~ 9 part as required.System is mixed and namely obtains fireproof polyvinyl acetate emulsion.
Comonomer selected in the method is preferably one or more in soft monomers such as being selected from ethyl propenoate, butyl acrylate, n octyl methacrylate, isoprene, dibutyl maleinate, lauryl methacrylate(LMA), amylene, methylvinylether; Protective colloid used is preferably the polymerization degree 500 ~ 2400, alcoholysis degree be more than 88% or 88% polyvinyl alcohol or polyacrylamide, Walocel MT 20.000PV, ethyl cellulose etc. in one or more mixture; Phosphorous-nitrogen compounds used is the ammonium polyphosphate of the polymerization degree 30 ~ 6000; Mineral filler used is the mixture of any one or more in wilkinite, diatomite, two oxyhydroxide, polynite, insoluble or indissoluble type oxyhydroxide or oxide compound.Emulsifying agent used is the mixed system of ionic or ionic and nonionic emulsifier.Wherein, mixed emulsifier system ionic and non-ionic type mass ratio are 1: 10 ~ 10: 1.Anionic emulsifier is be selected from any one or more of alkyl sodium sulfate salt, alkyl sulfonate sodium, glyceryl monostearate and alkylaryl sulphonate; Cationic emulsifier is be selected from any one or more in fatty amine salt, quaternary ammonium salt, tetrahydroglyoxaline, Moroxydine class, triazine derivative etc.Nonionic emulsifier is be selected from any one or more in octyl phenol Volpo S 10, nonylphenol polyethylene oxide ether, polysorbate60, tween 80, polysorbas20, class of department 80 and class 65 of department etc.
What deserves to be explained is step 4 in addition) fireproof polyvinyl acetate emulsion that obtains can be directly used in indoor and outdoor facing fire retardant coating, the aspects such as fire-resistant finish agent, fire resistant adhesive of weaving cotton cloth.
Compared with the prior art the present invention, has the following advantages:
1, not halogen-containing component in the fireproof polyvinyl acetate emulsion prepared due to the present invention, thus this fireproof polyvinyl acetate emulsion and this fireproof polyvinyl acetate emulsion is prepared in use all without Halogen air release, the injury particularly avoiding obnoxious flavour release pollution on the environment in combustion and human body is caused.
2, the fireproofing agent cost ratio polymer base material added in the fireproof polyvinyl acetate emulsion prepared due to the present invention is much lower, and the particle diameter of fireproofing agent is suitable with latex particle particle diameter, and fireproofing agent flameproof effect is good, addition is little, avoids the impact of introducing on stability of emulsion of fireproofing agent while significantly reducing emulsion cost.
3, because the present invention introduces inorganic particulate in polyvinyl acetate emulsion polymerization process, this inorganic particulate can partly enter in latex particle, by polymer overmold in monomer polymerization process, vinyl acetate homopolymer or the interface compatibility between vinyl acetate copolymer and main body fireproofing agent can be improved to a certain extent, thus can reducing the negative impact brought to material mechanical performance because adding fireproofing agent, ensure that the mechanical property needed for materials application.Moreover, after the two oxyhydroxide introducing laminate structure in emulsion polymerization process or polynite, in pre-emulsification process, partial monosomy enters between layered inorganic particle layer, directly reach intercalation packaging assembly in the course of the polymerization process, make the material after emulsion film forming be take mineral filler as the spacial framework of cross-linking set like this.The hydroxyl of two oxyhydroxide or polynite laminate can also form very strong hydrogen bond between polyvinyl acetate homopolymers or copolymer molecule, for the mechanical property of material is made contributions.
4, the fireproof polyvinyl acetate emulsion prepared due to the present invention is composite the inorganic filler components that can produce fire prevention synergistic effect, thus the addition of fireproofing agent can not only be made less, but also can not affect the intrinsic various performances of emulsion on the basis of improving emulsion fire resistance.
5, fireproof polyvinyl acetate emulsion provided by the invention in combustion, because main body fireproofing agent wherein effectively can promote that vinyl acetate homopolymer or vinyl acetate copolymer are cross-linked into charcoal under the katalysis of filler, and the layer of charcoal of densification can play the effect of heat insulation, oxygen barrier very well, thus can hinder or delay the burning of material inside, make material present good fire line.
6, the method preparing fireproof polyvinyl acetate emulsion provided by the invention is simple, technical maturity, is easy to control.
Embodiment
Below by embodiment, the present invention is specifically described; what be necessary to herein means out is that following examples are only for the invention will be further described; limiting the scope of the invention can not be interpreted as; the person skilled in the art in this field makes some nonessential improvement and adjustment according to the invention described above content to the present invention, still belongs to scope.
Embodiment 1
0.3 part of sodium lauryl sulphate, 0.3 part of octyl phenol polyoxy ether (OP-10), 0.2 part of two oxyhydroxide are added in 60 parts of water and stir 10 minutes at ambient temperature.The Potassium Persulphate of 0.2 part is dissolved in 20 parts of water, and 10 parts of vinyl acetates and 10 parts of butyl acrylates are mixed.At 68 DEG C, instill mix monomer and initiator while stirring.Monomer and initiator dripped off at 1.0 hours.Monomer and initiator drip rear constant temperature 68 DEG C reaction 0.5 hour, and temperature of reaction system is risen to 80 DEG C, insulation reaction 1.0 hours, is cooled to room temperature, and adjust ph is 10, discharging.In obtained reaction system, add 10 parts of polymerization degree is the ammonium polyphosphate of 30, system is mixed, and obtains fire-type polyvinyl acetate copolymerization emulsion.
Embodiment 2
1 part of sodium laurylsulfonate, 2 parts of Tween-60s, 0.5 part of magnesium hydroxide and 6 parts of Walocel MT 20.000PVs (first solvent) are added in 20 parts of water and stir 20 minutes at ambient temperature.The ammonium persulphate of 2.5 parts is dissolved in 15 parts of water, and 20 parts of vinyl acetates and 40 parts of ethyl propenoates are mixed.At 50 DEG C, instill mix monomer and initiator while stirring.Monomer and initiator dripped off at 2.5 hours.Monomer and initiator drip rear constant temperature 50 DEG C reaction 1.0 hours, and temperature of reaction system is risen to 90 DEG C, insulation reaction 1.5 hours, is cooled to room temperature, and adjust ph is 11, discharging.In obtained reaction system, add 20 parts of polymerization degree is the ammonium polyphosphate of 100 and the magnesium hydroxide of 1 part, system is mixed, obtains fire-type polyvinyl acetate copolymerization emulsion.
Embodiment 3
1 part of Cetyltrimethylammonium bromide, 3 parts of tween 20s, 0.3 part of polynite and 5 parts of polyvinyl alcohol-0588 (first solvent) are added in 30 parts of water and stir 30 minutes under 50 DEG C of conditions.The ammonium persulphate of 2 parts is dissolved in 10 parts of water, and 30 parts of vinyl acetates and 25 parts of n octyl methacrylates are mixed.At 50 DEG C, instill mix monomer and initiator while stirring.Monomer and initiator dripped off at 2.0 hours.Monomer and initiator drip rear constant temperature 50 DEG C reaction 1.5 hours, and temperature of reaction system is risen to 85 DEG C, insulation reaction 1.5 hours, is cooled to room temperature, and adjust ph is 5, discharging.The polymerization degree adding 50 parts in obtained reaction system is the ammonium polyphosphate of 200 and the polynite of 2 parts, system is mixed, obtains fire-type polyvinyl acetate copolymerization emulsion.
Embodiment 4
0.2 part of cetyl benzenesulfonic acid sodium, 1.8 parts of tween-80s, 0.4 part of zinc oxide and 2 parts of polyvinyl alcohol-2499 (first solvent) are added in 40 parts of water and stir 40 minutes under 40 DEG C of conditions.The redox initiation system that the Potassium Persulphate of 1 part and sodium bisulfite form is dissolved in 20 parts of water.At 40 DEG C, instill 40 parts of vinyl acetates and initiator while stirring.Monomer and initiator dripped off at 2.0 hours.Monomer and initiator drip rear constant temperature 40 DEG C reaction 1.0 hours, and temperature of reaction system is risen to 90 DEG C, insulation reaction 2.0 hours, is cooled to room temperature, and adjust ph is 7, discharging.The polymerization degree adding 20 parts in obtained reaction system is the ammonium polyphosphate of 50 and the polynite of 3 parts, system is mixed, and obtains fire-type polyvinyl acetate (PVA) homopolymerization emulsion.
Embodiment 5
6 parts of sodium stearate, 1 part of Si Ban-60,1.0 parts of titanium dioxide and 4 parts of polyvinyl alcohol-1799 (first solvent) are added in 25 parts of water and stir 50 minutes under 72 DEG C of conditions.The Potassium Persulphate of 2.5 parts is dissolved in 15 parts of water, and 50 parts of vinyl acetates and 10 parts of methylvinylethers are mixed.At 72 DEG C, instill mix monomer and initiator while stirring.Monomer and initiator dripped off at 3.0 hours.Monomer and initiator drip rear constant temperature 72 DEG C reaction 1.0 hours, and temperature of reaction system is risen to 95 DEG C, insulation reaction 1.0 hours, is cooled to room temperature, and adjust ph is 9, discharging.The polymerization degree adding 40 parts in obtained reaction system is the ammonium polyphosphate of 500 and the titanium dioxide of 9 parts, system is mixed, obtains fire-type polyvinyl acetate copolymerization emulsion.
Embodiment 6
5.4 parts of tetrahydroglyoxalines, 0.6 part of nonylphenol polyethylene oxide ether (TX-30), 1.0 parts of wilkinites and 7 parts of Natvosols (first solvent) are added in 25 parts of water and stir 20 minutes under 70 DEG C of conditions.The potassium permanganate of 2 parts and 1 oxalic acid are dissolved in 15 parts of water.At 70 DEG C, instill 60 parts of Vinyl Acetate Monomers and initiator while stirring.Monomer and initiator dripped off at 3.5 hours.Monomer and initiator drip rear constant temperature 70 DEG C reaction 1.5 hours, and temperature of reaction system is risen to 90 DEG C, insulation reaction 3.0 hours, is cooled to room temperature, and adjust ph is 10, discharging.The polymerization degree adding 20 parts in obtained reaction system is the ammonium polyphosphate of 2000 and the titanium dioxide of 8 parts, system is mixed, and obtains fire-type polyvinyl acetate (PVA) homopolymerization emulsion.
Embodiment 7
0.5 part of Si Ban-60,5.5 parts of Si Ban-20,0.8 part of diatomite and 4 parts of polyvinyl alcohol-0588 (first solvent) are added in 37 parts of water and stir 60 minutes under 60 DEG C of conditions.The mixed system of the hydrogen peroxide of 1.5 parts and S-WAT composition is dissolved in 18 parts of water, and 20 parts of vinyl acetates and 20 parts of dibutyl maleinates are mixed.At 60 DEG C, instill mix monomer and initiator while stirring.Monomer and initiator dripped off at 2.0 hours.Monomer and initiator drip rear constant temperature 72 DEG C reaction 0.5 hour, and temperature of reaction system is risen to 85 DEG C, insulation reaction 1.5 hours, is cooled to room temperature, and adjust ph is 6, discharging.The polymerization degree adding 50 parts in obtained reaction system is the ammonium polyphosphate of 3000 and the titanium dioxide of 7 parts, system is mixed, obtains fire-type polyvinyl acetate copolymerization emulsion.
Embodiment 8
2 parts of cetyl trimethylammonium bromides, 0.4 part of diatomite, 0.4 part of polynite and 4 parts of polyacrylamides (first solvent) are added in 38 parts of water and stir 40 minutes under 70 DEG C of conditions.The ammonium persulphate of 2.0 parts is dissolved in 12 parts of water, and 20 parts of vinyl acetates and 30 parts of lauryl methacrylate(LMA)s are mixed.At 70 DEG C, instill mix monomer and initiator while stirring.Monomer and initiator dripped off at 2.5 hours.Monomer and initiator drip rear constant temperature 70 DEG C reaction 1.0 hours, and temperature of reaction system is risen to 90 DEG C, insulation reaction 1.0 hours, is cooled to room temperature, and adjust ph is 7, discharging.The polymerization degree adding 10 parts in obtained reaction system is the ammonium polyphosphate of 6000,2.5 parts of diatomite and 2.5 parts of polynites, system is mixed, obtains fire-type polyvinyl acetate copolymerization emulsion.
Comparative example
1 part of Cetyltrimethylammonium bromide, 3 parts of tween 20s and 5 parts of polyvinyl alcohol-0588 (first solvent) are added in 30 parts of water and stir 30 minutes under 50 DEG C of conditions.The ammonium persulphate of 2 parts is dissolved in 10 parts of water, and 30 parts of vinyl acetates and 25 parts of n octyl methacrylates are mixed.At 50 DEG C, instill mix monomer and initiator while stirring.Monomer and initiator dripped off at 2.0 hours.Monomer and initiator drip rear constant temperature 50 DEG C reaction 1.5 hours, and temperature of reaction system is risen to 85 DEG C, insulation reaction 1.5 hours, is cooled to room temperature, and adjust ph is 11, discharging.
Claims (8)
1. a fireproof polyvinyl acetate emulsion, is characterized in that: this emulsion is made up of vinyl acetate homopolymer or multipolymer and water, protective colloid, emulsifying agent, phosphorus-nitrogen fireproofing agent and mineral filler; Vinyl acetate 10 ~ 60 parts, comonomer 0 ~ 40 part, 30 ~ 80 parts, water, initiator 0.2 ~ 3 part, emulsifying agent 0.6 ~ 7 part, protective colloid 0 ~ 7 part, phosphorous-nitrogen compounds 10 ~ 50 parts, mineral filler 0.2 ~ 10 part in fireproof polyvinyl acetate emulsion.
2. fireproof polyvinyl acetate emulsion according to claim 1, it is characterized in that, described emulsifying agent is the mixed system of ionic or ionic and nonionic emulsifier, and wherein, blending emulsifiers ionic and non-ionic type mass ratio are 1: 10 ~ 10: 1; Anionic emulsifier be selected from alkyl sodium sulfate salt, alkyl sulfonate sodium, alkylaryl sulphonate one or more; Cationic emulsifier be selected from fatty amine salt, quaternary ammonium salt, tetrahydroglyoxaline, Moroxydine class, triazine derivative one or more; Nonionic emulsifier be selected from glyceryl monostearate, octyl phenol Volpo S 10, nonylphenol polyethylene oxide ether, polysorbate60, tween 80, polysorbas20, class of department 80 and department class 65 in one or more.
3. fireproof polyvinyl acetate emulsion according to claim 1, it is characterized in that, described initiator is any one in water miscible peroxide or water soluble, redox system, and wherein water soluble peroxygen class initiator is any one in Potassium Persulphate, ammonium persulphate; In water soluble, redox system, oxygenant is any one in hydrogen peroxide, persulphate, hydroperoxide, tetravalent cerium salt, potassium permanganate; Reductive agent is Fe
2+, Cu
+, NaHSO
3, Na
2sO
3, Na
2sO
3, alcohol, amine, oxalic acid, any one in glucose.
4. fireproof polyvinyl acetate emulsion according to claim 1, it is characterized in that, described comonomer is one or more in ethyl propenoate, butyl acrylate, n octyl methacrylate, dibutyl maleinate, lauryl methacrylate(LMA), isoprene, amylene, methylvinylether.
5. fireproof polyvinyl acetate emulsion according to claim 1, is characterized in that, described protective colloid is one or more mixture of polyvinyl alcohol, polyacrylamide, Walocel MT 20.000PV, ethyl cellulose; The polyvinyl alcohol polymerization degree is 500 ~ 2400, and alcoholysis degree is more than 88% or 88%.
6. fireproof polyvinyl acetate emulsion according to claim 1, it is characterized in that, described mineral filler is selected from any one or more in two oxyhydroxide, wilkinite, diatomite, polynite, insoluble or indissoluble shaped metal oxyhydroxide and insoluble or indissoluble shaped metal oxide compound.
7. fireproof polyvinyl acetate emulsion according to claim 1, is characterized in that, wherein containing 10 ~ 50 parts of polymerization degree is the ammonium polyphosphate of 30 ~ 6000; Containing the mixture of any one or more be selected from two oxyhydroxide, wilkinite, diatomite, polynite, insoluble or indissoluble shaped metal oxyhydroxide and insoluble or indissoluble shaped metal oxide compound of 0.2 ~ 10 part.
8. prepare a method for the described fireproof polyvinyl acetate emulsion of one of claim 1-7, it is characterized in that the processing step of the method and condition as follows:
1) 0.6 ~ 7 part of emulsifying agent, 0 ~ 7 part of protective colloid, 0.2 ~ 1 part of mineral filler are joined in 20 ~ 60 parts of water, stirring and dissolving 10 ~ 60 minutes at room temperature ~ 75 DEG C;
2) 0.2 ~ 3 part of initiator is dissolved in 10 ~ 20 parts of water, and 10 ~ 60 parts of vinyl acetates and 0 ~ 40 part of comonomer are mixed, at 50 ~ 75 DEG C, instill mix monomer and initiator while stirring, monomer and initiator dripped off at 1.0 ~ 3.5 hours;
3) monomer and initiator dripped rear continuation reaction after 0.5 ~ 1.5 hour, reaction system were warming up to 80 ~ 95 DEG C, and under agitation condition, insulation reaction 1 ~ 3 hour, is cooled to room temperature, and adjust ph is 5 ~ 12, discharging.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4009137A (en) * | 1973-11-30 | 1977-02-22 | Hoechst Aktiengesellschaft | Intumescent flame-retardant coating compositions |
| US4035315A (en) * | 1976-05-03 | 1977-07-12 | Arco Polymers, Inc. | Fire-resistant styrene polymer foams |
-
2010
- 2010-08-18 CN CN201010263723.2A patent/CN102040790B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4009137A (en) * | 1973-11-30 | 1977-02-22 | Hoechst Aktiengesellschaft | Intumescent flame-retardant coating compositions |
| US4035315A (en) * | 1976-05-03 | 1977-07-12 | Arco Polymers, Inc. | Fire-resistant styrene polymer foams |
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| Publication number | Publication date |
|---|---|
| CN102040790A (en) | 2011-05-04 |
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