CN103044604B - Polyvinylidene chloride copolymer emulsion for glass fiber dip-coating liquid, as well as preparation method and use thereof - Google Patents
Polyvinylidene chloride copolymer emulsion for glass fiber dip-coating liquid, as well as preparation method and use thereof Download PDFInfo
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Abstract
The invention provides a polyvinylidene chloride copolymer emulsion for a glass fiber dip-coating liquid, as well as a preparation method and use thereof. The polyvinylidene chloride copolymer emulsion contains the following ingredients by weight calculated by 100 parts: 20-55 parts of monomer mixture which comprises vinylidene chloride accounting for 65-75 wt% of monomer mixture, acrylates accounting for 20-30 wt% of monomer mixture and acrylonitrile accounting for 5-10 wt% of monomer mixture; 0.1025 part of seed polymer emulsifier which comprises 0.0225 part of sodium dodecyl benzene sulfonate and 0.08 part of OP-10; 0.16 part of an initiator which comprises 0.08 part of organic peroxides and 0.08 part of sodium formaldehyde sulfoxylate; 0.3-1.2 parts of mixed emulsifier which comprises 0.15-0.6 part of sodium dodecyl sulfate and 0.15-0.6 part of sodium dodecyl benzene sulfonate. The dip-coating liquid has high stability, is not liable to demulsification upon storage for more than two years, has good uniformity of emulsion particles, and is excellent in leak tightness, flame retardancy and resistance to alkali. The polymerization process of the dip-coating liquid is highly safe and convenient for temperature/pressure control and has a short reaction time. The temperature for heat treatment during the dip-coating process is reduced.
Description
Technical field
The present invention relates to a kind of glass fibre lotion polyvinylidene dichloride copolymer emulsion and its production and use, especially a kind of glass fibre lotion PVDC emulsion adopting seeded emulsion polymerization obtained and its production and use.
Background technology
In recent years, benzene emulsion impregnated glass fiber screen cloth is widely used in energy saving building, but because benzene emulsion coating flame resistivity is bad, with the problem such as concrete binding difference, limit the application of benzene emulsion in energy saving building.
At present glass fibre being carried out to dip-coating or infiltrates is substantially all adopt epoxy resin, vibrin, urethane resin system.Patent CN101746963A, 102020427A, 102211882A, 102219399A relates to the direct yarn treating compound of alkali free glass fibre adopting epoxy resin latex, and CN101696550A relates to the treating compound containing vinyl trichloro silane for glass fibre, and CN102092963A relates to containing tetraethoxysilane, water-soluble polyester, urethane, the treating compound of 3-aminopropyl trimethoxysilane, CN101838934A relates to containing ptfe emulsion, polyacrylate dispersion, polyvinyl alcohol water solution, the treating compound of polymethylphenyl siloxane fluid emulsion, CN102241484A relates to aquosity epoxy emulsion, small molecules epoxy emulsion, polyaminoester emulsion, polyester or acrylic acid treating compound, CN102503184A relates to containing Emulsion of UPR, epoxy resin latex, aqueous epoxy resins, modified epoxy, the treating compound of silane coupling agent, CN102503185A relates to containing modification amylose starch, modification amylopectin, microcrystalline wax, hydrogenated vegetable fat, quaternary ammonium salt cationic lubricant, sorbester p17, alkyl sulfonate surfactants, the treating compound of modified epoxy adhesive.Although adopt the glass fibre strength ratio of above treating compound process higher, their flame resistivity is not high, limits their application in energy saving building.
At present architectural dip-coating being carried out to glass fibre about polyvinylidene dichloride class emulsion being used for, also seldom having report.CN101367898 relates to the obtained PVDC copolymer emulsion of vinylidene chloride, esters of unsaturated fatty acids monomer, unsaturated fatty acids and perfluor esters of unsaturated fatty acids monomer, and CN1986583 relates to the obtained water PVDC latex specially for painting special cloth of acrylic ester monomer with vinylidene chloride, acrylate soft monomer, unsaturated fatty acids.The stability of emulsion of above-mentioned report is poor and micelle is even not.
For technical problem set forth above, and there is in conjunction with polyvinylidene emulsions the feature of certain flame retardant resistance, the invention provides a kind of glass fibre lotion polyvinylidene dichloride copolymer emulsion and its production and use.
Summary of the invention
In order to overcome above-mentioned deficiency, the invention provides a kind of glass fibre lotion polyvinylidene dichloride copolymer emulsion and its production and use, this copolymer emulsion good stability, can preserve more than 2 years, latex particle good uniformity, and special, the resistance to base strength of good airproof performance, flame retardant resistance is high; The preparation method of this lotion is simple, the reaction times is short.
The present invention adopts following technical scheme to realize above-mentioned purpose, and first object is to provide a kind of glass fibre lotion polyvinylidene dichloride copolymer emulsion, and obtained through seeded emulsion polymerization by following component, the parts by weight of each component are 100 parts:
Monomer mixture 20-55 part, comprising: account for the vinylidene chloride of mix monomer quality total amount 65-75%, account for the acrylate of mix monomer quality total amount 20-30% and account for the vinyl cyanide of mix monomer quality total amount 5-10%;
Seeding polymerization emulsifying agent, comprising: Sodium dodecylbenzene sulfonate 0.0225 part and OP-10 are 0.08 part;
Initiator, comprising: organo-peroxide 0.08 part and sodium formaldehyde sulphoxylate 0.08 part;
Blending emulsifiers, comprising: sodium laurylsulfonate 0.15-0.6 part and Sodium dodecylbenzene sulfonate 0.15-0.6 part;
Other auxiliary agents are appropriate;
PH adjusting agent is appropriate, and it is that potassium hydroxide or triethylamine are appropriate;
Deionized water residual content.
Described acrylate is one or more in methyl acrylate, ethyl propenoate, butyl acrylate.
Described organo-peroxide is tertbutyl peroxide.
Other auxiliary agents described are ammonium acetate.
Another object of the present invention is to provide a kind of preparation method of glass fibre lotion polyvinylidene dichloride copolymer emulsion, and adopt seed emulsion polymerization, concrete steps are:
1. raw-material preparation:
A) preparation of mix monomer: vinylidene chloride 65-75%, acrylate 20-30%, vinyl cyanide 5-10% are mixed, stirs 2h, makes the monomer mixture of 20-55 part;
B) initiator preparation: tertbutyl peroxide 0.08 part is added in deionized water 4 parts to carry out being uniformly mixed and make organo-peroxide solution; Sodium formaldehyde sulphoxylate 0.08 part is added in deionized water 4 parts to carry out being uniformly mixed and make sodium formaldehyde sulphoxylate solution;
C) blending emulsifiers preparation: sodium laurylsulfonate 0.3 part, Sodium dodecylbenzene sulfonate 0.3 part are added in 4 parts of water and mix, adds deionized water to 5 part and carry out cold dispersion 2h, make mixing and emulsifying agent solution;
2. seeding polymerization
A) in reactor, add deionized water or soft water 50 parts, add emulsifying agent Sodium dodecylbenzene sulfonate 0.0225 part, OP-10 is 0.08 part, adds auxiliary agent ammonium acetate 0.005 part, envelope still, gas displacement 3 times, vacuumizes, suck 3% mix monomer, cold dispersion (stirring) 0.5h;
B) be warming up to 47 DEG C, pump into initiator organo-peroxide solution, sodium formaldehyde sulphoxylate solution, pump into the speed of 8kg/24h, be warming up to 55 DEG C of constant temperature, when Pressure Drop is to 0.01-0.03MPa, seeding polymerization terminates, and obtains seed latex;
3. emulsion preparation
The blending emulsifiers prepared, remaining mix monomer is continuously pumped in seed latex, within 5-8 hour, add, as Pressure Drop to 0 ~-0.01MPa, reaction terminates, add pH adjusting agent adjust pH to 5-6, add talcum powder, the polyvinylidene dichloride of obtained solid content 20-55% and acrylate copolymer emulsion.
Another object of the present invention is to provide a kind of purposes of glass fibre lotion polyvinylidene dichloride copolymer emulsion, and it is for glass fibre lotion.
Present invention also offers a kind of glass fibre lotion adopting above-mentioned polyvinylidene dichloride copolymer emulsion obtained.
Present invention also offers a kind of glass fibre adopting the dip-coating of glass fibre lotion.
The testing method of gained emulsion property is as follows:
Solid content (%): GB1725-79;
Surface tension (mN/m): GB1725-79;
Viscosity (mPas): U.S. BROOKFIELD viscometer;
The accurate pH meter of pH value: PHS-3C;
Resistance to base strength: according to standard JG149-2003; Resistance to base strength can characterize with alkaline-resisting breaking strength retention B;
Flame retardant properties: V-0 level: after carrying out twice combustion testings of 10 seconds to sample, flame extinguished in 30 seconds, and combustionmaterial can not be had to fall down;
Stability of emulsion: by the emulsion of preparation 30 DEG C, place 3 months, 6 months, 12 months, 24 months under RH70%, observe the changing conditions of emulsion.
Monomer residue rate: according to standard GB/T5009.122-2003.
According to above-mentioned testing method, the performance index of measured emulsion are as follows:
Solid content (%): 20-55;
Surface tension (mN/m) :≤40
Viscosity (mPas) :≤10
PH value: 5-6
Density (g/cm
3): 1.23-1.26
Alkaline-resisting breaking strength retention (%): radial >=88, broadwise >=93;
, there is not precipitation in stability of emulsion: place 2 years not breakdowns of emulsion;
Flame retardant resistance: reach V-0 level.
Monomer residue rate after emulsion coating: do not detect.
The present invention has following beneficial effect: the reaction times of the method for making of this polyvinylidene dichloride copolymer emulsion is short, only need 0.5 hour, polymerization process security is high, temperature, pressure easily controls, and gained good emulsion stability, preserve more than 2 years, emulsion is without precipitation, and emulsion is placed 45 days in 60 DEG C of baking ovens in addition, emulsion is breakdown of emulsion not, produces in emulsion without precipitation; The particle uniformity of latex is good, and good airproof performance, flame retardant resistance meet V-0 level, resistance to base strength is high.In the process with PVDC latex coated glass fiber, in order to improve the binding ability of latex and glass fibre, heat treatment temperature is 145 DEG C, relative to the heat treatment temperature 170-175 DEG C during benzene emulsion impregnated glass fiber, has the effect reducing energy consumption.
Accompanying drawing explanation
Fig. 1. the glass fibre lotion polymerization technique schema of polyvinylidene dichloride copolymer emulsion.
Embodiment
Embodiment 1:
1. preparation of raw material: vinylidene chloride 70kg, butyl acrylate 30kg, vinyl cyanide 10kg are mixed, stirs 2h, makes mix monomer; Tertbutyl peroxide 160g is added in deionized water 8kg to carry out being uniformly mixed and make tertbutyl peroxide solution; Sodium formaldehyde sulphoxylate 160g is added in deionized water 8kg to carry out being uniformly mixed and make sodium formaldehyde sulphoxylate solution; Sodium laurylsulfonate 600g, Sodium dodecylbenzene sulfonate 600g are added in 8kg water and mix, adds deionized water and carry out cold dispersion 2h to 10kg, make mixing and emulsifying agent solution;
2. seeding polymerization: add deionized water 100kg in reactor, adds emulsifying agent Sodium dodecylbenzene sulfonate 45g, and OP-10 is 160g, adds auxiliary agent ammonium acetate 10g, tertbutyl peroxide 3g, envelope still, gas displacement 3 times, vacuumizes, suck 3% mix monomer, cold dispersion (stirring) 0.5h; Be warming up to 47 DEG C, pump into initiator tertbutyl peroxide solution, sodium formaldehyde sulphoxylate solution, pump into the speed of 8kg/24h, be warming up to 55 DEG C of constant temperature, when Pressure Drop is to 0.01-0.03MPa, seeding polymerization terminates, and obtains seed latex;
3. letex polymerization: be continuously pumped into the blending emulsifiers prepared, remaining mix monomer in seed latex, within 6 hours, add, as Pressure Drop to 0 ~-0.01MPa, reaction terminates, add potassium hydroxide adjust pH to 5, add talcum powder, the polyvinylidene dichloride of obtained solid content 50% and acrylate copolymer emulsion.
According to above-mentioned performance test methods, the performance index recorded are as follows:
Solid content (%): 50;
Surface tension (mN/m): 38
Viscosity (mPas): 9
PH value: 5.5
Density (g/cm
3): 1.25
Alkaline-resisting breaking strength retention (%): radial direction 89, broadwise 94.
Embodiment 2:
1. preparation of raw material: vinylidene chloride 82.5kg, ethyl propenoate 27kg, vinyl cyanide 0.5kg are mixed, stirs 2h, makes mix monomer; Tertbutyl peroxide 160g is added in deionized water 8kg to carry out being uniformly mixed and make tertbutyl peroxide solution; Sodium formaldehyde sulphoxylate 160g is added in deionized water 8kg to carry out being uniformly mixed and make sodium formaldehyde sulphoxylate solution; Sodium laurylsulfonate 600g, Sodium dodecylbenzene sulfonate 600g are added in 8kg water and mix, adds deionized water and carry out cold dispersion 2h to 10kg, make mixing and emulsifying agent solution;
2. seeding polymerization: add deionized water or soft water 100kg in reactor, add emulsifying agent Sodium dodecylbenzene sulfonate 45g, OP-10 is 160g, adds auxiliary agent ammonium acetate 10g, tertbutyl peroxide 3g, envelope still, gas displacement 3 times, vacuumize, suck 3% mix monomer, cold dispersion (stirring) 0.5h; Be warming up to 47 DEG C, pump into initiator tertbutyl peroxide solution, sodium formaldehyde sulphoxylate solution, pump into the speed of 8kg/24h, be warming up to 55 DEG C of constant temperature, when Pressure Drop is to 0.01-0.03MPa, seeding polymerization terminates, and obtains seed latex;
3. letex polymerization: be continuously pumped into the blending emulsifiers prepared, remaining mix monomer in seed latex, within 6 hours, add, as Pressure Drop to 0 ~-0.01MPa, reaction terminates, add triethylamine adjust pH to 5, add talcum powder, the polyvinylidene dichloride of obtained solid content 55% and acrylate copolymer emulsion.
Embodiment 3:
1. preparation of raw material: vinylidene chloride 26kg, methyl acrylate 12kg, vinyl cyanide 2kg are mixed, stirs 2h, makes mix monomer; Tertbutyl peroxide 160g is added in deionized water 8kg to carry out being uniformly mixed and make tertbutyl peroxide solution; Sodium formaldehyde sulphoxylate 160g is added in deionized water 8kg to carry out being uniformly mixed and make sodium formaldehyde sulphoxylate solution; Sodium laurylsulfonate 600g, Sodium dodecylbenzene sulfonate 600g are added in 8kg water and mix, adds deionized water and carry out cold dispersion 2h to 10kg, make mixing and emulsifying agent solution;
2. seeding polymerization: add deionized water or soft water 100kg in reactor, add emulsifying agent Sodium dodecylbenzene sulfonate 45g, OP-10 is 160g, adds auxiliary agent ammonium acetate 10g, tertbutyl peroxide 3g, envelope still, gas displacement 3 times, vacuumize, suck 3% mix monomer, cold dispersion (stirring) 0.5h; Be warming up to 47 DEG C, pump into initiator tertbutyl peroxide solution, sodium formaldehyde sulphoxylate solution, pump into the speed of 8kg/24h, be warming up to 55 DEG C of constant temperature, when Pressure Drop is to 0.01-0.03MPa, seeding polymerization terminates, and obtains seed latex;
3. letex polymerization: be continuously pumped into the blending emulsifiers prepared, remaining mix monomer in seed latex, within 6 hours, add, as Pressure Drop to 0 ~-0.01MPa, reaction terminates, add potassium hydroxide adjust pH to 5, add talcum powder, the polyvinylidene dichloride of obtained solid content 20% and acrylate copolymer emulsion.
Claims (8)
1. a glass fibre lotion preparation method for polyvinylidene dichloride copolymer emulsion, is characterized in that: this preparation method adopts seeded emulsion polymerization, and the number of each raw material adopts parts by weight, and the concrete steps of this method for making are:
(1) raw-material preparation:
1) preparation of mix monomer: by account for the weight percent 65-75% of monomer total amount vinylidene chloride, account for the weight percent 20-30% of monomer total amount acrylate, account for monomer total amount weight percent 5-10% vinyl cyanide mixing, stir 2h, make the monomer mixture of 20-55 part;
2) initiator preparation: organo-peroxide 0.08 part is added in deionized water 4 parts to carry out being uniformly mixed and make organo-peroxide solution; Sodium formaldehyde sulphoxylate 0.08 part is added in deionized water 4 parts to carry out being uniformly mixed and make sodium formaldehyde sulphoxylate solution;
3) blending emulsifiers preparation: sodium laurylsulfonate 0.3 part, Sodium dodecylbenzene sulfonate 0.3 part are added in 4 parts of water and mix, adds deionized water to 5 part and carry out cold dispersion 2h, make mixing and emulsifying agent solution;
(2) seeding polymerization:
In reactor, add deionized water or soft water 50 parts, add emulsifying agent Sodium dodecylbenzene sulfonate 0.0225 part, OP-10 is 0.08 part, adds auxiliary agent ammonium acetate 0.005 part, envelope still, passes into nitrogen and carries out gas displacement 3 times, and vacuumize, suck 3% mix monomer, cold dispersion 0.5h; Be warming up to 47 DEG C, the initiator organo-peroxide solution, the sodium formaldehyde sulphoxylate solution that prepare described in pumping into, pump into the speed of 8kg/24h, is warming up to 55 DEG C of constant temperature, and when Pressure Drop is to 0.01-0.03MPa, seeding polymerization terminates, and obtains seed latex;
(3) emulsion preparation:
The blending emulsifiers prepared, remaining mix monomer is continuously pumped in seed latex, within 6 hours, add, as Pressure Drop to 0 ~-0.01MPa, stop adding initiator, reaction terminates, add pH adjusting agent adjust pH to 5-6, add talcum powder, the polyvinylidene dichloride of obtained solid content 20-55% and acrylate copolymer emulsion.
2. the preparation method of glass fibre lotion polyvinylidene dichloride copolymer emulsion according to claim 1, is characterized in that: described acrylate be in methyl acrylate, ethyl propenoate, butyl acrylate any one or multiple.
3. the preparation method of glass fibre lotion polyvinylidene dichloride copolymer emulsion according to claim 1 and 2, is characterized in that: described acrylate is butyl acrylate.
4. the preparation method of glass fibre lotion polyvinylidene dichloride copolymer emulsion according to claim 1 and 2, is characterized in that: described organo-peroxide is tertbutyl peroxide; Described pH adjusting agent is potassium hydroxide or triethylamine.
5. according to the polyvinylidene dichloride copolymer emulsion obtained by the preparation method of glass fibre lotion polyvinylidene dichloride copolymer emulsion according to claim 1.
6. the purposes of glass fibre lotion polyvinylidene dichloride copolymer emulsion according to claim 5, is characterized in that: for glass fibre lotion.
7. with the glass fibre lotion that glass fibre lotion polyvinylidene dichloride copolymer emulsion according to claim 5 is obtained.
8. with the glass fibre of glass fibre lotion according to claim 7 dip-coating.
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| CA1018445A (en) * | 1973-04-06 | 1977-10-04 | Andrew A. Dukert | Chemically resistant plastic laminate construction |
| JPH0214233A (en) * | 1988-07-01 | 1990-01-18 | Asahi Fiber Glass Co Ltd | Resin composition |
| CN1223618C (en) * | 2003-09-10 | 2005-10-19 | 东阳市野风塑胶有限公司 | Process for preparing disposable paper dinnerware latex paint and method of applying |
| CN101033277B (en) * | 2007-03-27 | 2010-05-19 | 上海三爱富新材料股份有限公司 | Tetrafluoroethylene-propylene fluorine-containing elastic body and preparing method thereof |
| CN101186666A (en) * | 2007-11-19 | 2008-05-28 | 上海氯碱化工股份有限公司 | Method for preparing polyvinylidene chloride and acrylic ester copolymerization latex |
| CN101367898B (en) * | 2008-08-27 | 2010-08-25 | 浙江巨化股份有限公司电化厂 | PVDC copolymerization emulsion, preparation and uses thereof |
| CN100588693C (en) * | 2008-09-04 | 2010-02-10 | 宁波内索尔胶乳科技有限公司 | Low-temperature heat sealed high resistant foodstuff package cotating film latex and preparation method thereof |
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