CN106147412A - A kind of preparation method of expanding fire-proof paint - Google Patents
A kind of preparation method of expanding fire-proof paint Download PDFInfo
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- CN106147412A CN106147412A CN201510157125.XA CN201510157125A CN106147412A CN 106147412 A CN106147412 A CN 106147412A CN 201510157125 A CN201510157125 A CN 201510157125A CN 106147412 A CN106147412 A CN 106147412A
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- proof paint
- fire
- expanding fire
- preparation
- melamine
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- 239000003973 paint Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 26
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000000839 emulsion Substances 0.000 claims abstract description 15
- 229920005989 resin Polymers 0.000 claims abstract description 15
- 239000011347 resin Substances 0.000 claims abstract description 15
- JDSHMPZPIAZGSV-UHFFFAOYSA-N Melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229920000877 Melamine resin Polymers 0.000 claims abstract description 14
- HPSUPGAVFFFPMQ-UHFFFAOYSA-N 1,2,3,4,6,7,10-heptachlorododecane Chemical compound CCC(Cl)CCC(Cl)C(Cl)CC(Cl)C(Cl)C(Cl)CCl HPSUPGAVFFFPMQ-UHFFFAOYSA-N 0.000 claims abstract description 13
- WXZMFSXDPGVJKK-UHFFFAOYSA-N 2,2-bis(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims abstract description 13
- ZRIUUUJAJJNDSS-UHFFFAOYSA-N Ammonium phosphates Chemical compound [NH4+].[NH4+].[NH4+].[O-]P([O-])([O-])=O ZRIUUUJAJJNDSS-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000004114 Ammonium polyphosphate Substances 0.000 claims abstract description 13
- 229920001276 Ammonium polyphosphate Polymers 0.000 claims abstract description 13
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims abstract description 13
- 229920001577 copolymer Polymers 0.000 claims abstract description 13
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 13
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 13
- QGBSISYHAICWAH-UHFFFAOYSA-N cyanoguanidine Chemical class NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 claims abstract description 8
- IZUPBVBPLAPZRR-UHFFFAOYSA-N Pentachlorophenol Chemical compound OC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl IZUPBVBPLAPZRR-UHFFFAOYSA-N 0.000 claims description 11
- WXMKPNITSTVMEF-UHFFFAOYSA-M Sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 claims description 11
- GCLGEJMYGQKIIW-UHFFFAOYSA-H Sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 11
- 235000010234 sodium benzoate Nutrition 0.000 claims description 11
- 239000004299 sodium benzoate Substances 0.000 claims description 11
- 229920002545 silicone oil Polymers 0.000 claims description 9
- 238000000227 grinding Methods 0.000 claims description 8
- 239000002270 dispersing agent Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 abstract description 29
- 238000000576 coating method Methods 0.000 abstract description 29
- 239000000463 material Substances 0.000 abstract description 12
- 229910000831 Steel Inorganic materials 0.000 abstract description 8
- 239000010959 steel Substances 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000003795 chemical substances by application Substances 0.000 abstract description 6
- 239000003063 flame retardant Substances 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- 239000004088 foaming agent Substances 0.000 abstract description 3
- 239000003054 catalyst Substances 0.000 abstract description 2
- 239000000945 filler Substances 0.000 abstract description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N o-xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 abstract description 2
- 238000003860 storage Methods 0.000 abstract description 2
- 230000004048 modification Effects 0.000 abstract 1
- 238000006011 modification reaction Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 239000006260 foam Substances 0.000 description 5
- 238000005187 foaming Methods 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 239000003610 charcoal Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 210000002356 Skeleton Anatomy 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive Effects 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001808 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- ZRALSGWEFCBTJO-UHFFFAOYSA-N guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000003014 reinforcing Effects 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Abstract
The invention discloses the preparation method of a kind of expanding fire-proof paint, in dispensing raw material by ethene-vinyl acetate copolymer emulsion and modified resin be base-material, melamine and cyanoguanidines be foaming agent, pentaerythrite be carbon forming agent, ammonium polyphosphate be carbonifying catalyst, chlorinated paraffin be fire retardant, silica, titanium dioxide is filler and other auxiliary agents form, the present invention uses the base-material that water-based emulsion and modification resin are compounded into, and makes fireproof coating eliminate, during production, storage, transport, construction, use, the harm that dimethylbenzene is released.Save production cost, production and construction conveniently, without fire hazard simultaneously.The fireproof coating technical performance of present invention preparation is excellent, of many uses.It had both met the requirement of GB 12441-1998 " finishing fire retardant paint general technical specifications ", and the technical indicator that is above standard, and also meets GB 14907-94 " fire-resistant coating for steel structure general technical specifications " and requires, and exceeds well over standard all technical.
Description
Technical field
The present invention relates to the production technology category of fireproof coating, specifically, relate to the preparation method of a kind of expanding fire-proof paint.
Background technology
At present, the expanding fire-proof paint applied in domestic and international Building Fire Protection engineering, can be divided into facing fire retardant coating and the big class of fire-resistant coating for steel structure two, and each class has many kinds.Generally saying, why fireproof coating can prevent fires, and is common paint film at normal temperatures after being because coating film forming, and under flame or high temperature, coating expands charing, forms a nonflammable spongiform carbonaceous layer more several ten times larger than its former film thickness.It can completely cut off the extraneous heat transfer fire retardation to base material for the burning things which may cause a fire disaster; the each component of its coating issues biological reason, chemical change at flame or high temperature action; absorb substantial amounts of heat energy, counteract a part of external influence in the heat energy of object, and retardation is risen to the temperature-rise period that is heated of protected object body.Coating is at high temperature dehydrated into charcoal reaction and melts covering effect simultaneously, completely cut off air, making organic matter be converted into charring layer, it is to avoid exothermic oxidation reaction generation, coating at high temperature decomposites non-flammable compressive gas such as ammonia etc., dilute the concentration of fuel gas and oxygen in air, the carrying out of suppression flame combustion, due to above all effects, coating runs into big fire can stop spreading of flame, slow down flame transmission speed, be allowed to that there is excellent fire-retardant fireproof performance.But, on producing, different types of fireproof coating needs to use different raw material, different process and equipment to manufacture.In application aspect, the fireproof coating that can be used for flammable substrate facing typically may not apply to the flameproof protection of steel construction, and the fireproof coating for steel construction may not apply to the flameproof protection of flammable substrate facing.This limits their range mainly due to respective technical performance, and therefore, often an engineering then needs the application respectively of several fireproof coating, could meet the fire prevention needs of whole engineering.So produce to it and bring process complexity in engineering construction, needing plurality of devices, increase administration fee use, improve cost, be unfavorable for wide popularization and application.Multiplex in order to find a kind of product, solve the alone fireproof coating of product and bring above shortcoming, be also intended to improve the technical performance of fireproof coating at all, expand its range.
Content of the invention
Present invention ground purpose is intended to produce the preparation method of a kind of expanding fire-proof paint, Specifically, produces one and can be not only used for flammable substrate flameproof protection, can be used for again the expanding fire-proof paint of steel structure fireproof protection.
Realizing that the comprising the concrete steps that of preparation method of a kind of expanding fire-proof paint of the present invention first carries out raw material apolegamy, dispensing is prepared by following (weight) %:
Ethene-vinyl acetate copolymer emulsion 2.1-5.0；
Modified resin 5.7-7.5；
Ammonium polyphosphate 18-24；
Chlorinated paraffin 1.8-2.4；
Pentaerythrite 8.0-12；
Melamine 7.3-9.7；
Fluorine-based guanidine 3.5-5.0；
Silica 4.2-8.3；
Titanium dioxide 1.5-2.0；
Organic silicone oil 0-1.6；
Calgon (10% strength solution) 3.5-5.0；
Water 30.0-34；
Tbp 0.005-0.01；
Penta sodium pentachlorophenate 0.03-0.04；
Sodium Benzoate 0.03-0.04.
After dispensing is chosen, prepare by following process:
1st, the calgon (10% strength solution) as dispersant is put into container with water, stir standby；
2nd, the dispersant stirring and water are poured in ball mill, machine, while grinding, while adding ammonium polyphosphate, chlorinated paraffin, pentaerythrite, melamine, cyanoguanidines, silica, titanium dioxide, tbp, penta sodium pentachlorophenate and Sodium Benzoate by charge ratio order, grind 0.5-2 hour.It is allowed to fineness and reach 70-100 micron；
3rd, by compound immigration dispersion machine good for ball mill grinding adds ethene-vinyl acetate copolymer emulsion, modified resin and organic silicone oil, the multipurpose expanding fireproof paint of the present invention after start 20-30 minute, is produced.
The preparation method raw material of a kind of expanding fire-proof paint of the present invention is made up of as filler and other auxiliary agents as fire retardant, silica, titanium dioxide as carbonifying catalyst, chlorinated paraffin as carbon forming agent, ammonium polyphosphate as foaming agent, pentaerythrite as base-material, melamine and cyanoguanidines ethene-vinyl acetate copolymer emulsion and modified resin, and selects the raw material proportioning of mediation coupling mutually.The dispensing of the present invention is the key of technology, and wherein carbon forming agent is the material base forming three-D space structure nonflammable foam charring layer, plays skeleton function to foam charring layer.But the ability of the intensity of foam charring layer and high temperature resistant flame also reduces simultaneously.Fireproof coating adds siliceous high temperature resistant reinforcing agent.Its fusing point is higher than the melted carbonization temperature of coating; it is evenly distributed under flame high temperature in foaming layer; it is greatly improved flame resistant elevated temperature strength; it is allowed to avoid charcoal frame foaming layer to continue to be oxidized to charcoal; lose adhesive force; blown off by the thermal current that flame is formed, thus lose the flameproof protection effect to base material.And make foaming layer form glassy state foam silicon charcoal fire resistant protective layer, improve the resistance to combustion time of flammable substrate and the fire endurance of steel structure material.Base-material is to form paint film material.It has physical and chemical stability in the storage phase in coating, after coating film forming, can quickly form fixing film layer under conditions of use.The present invention does not use solvent-based binder, and the base-material using water-based emulsion and modified resin to be compounded into, make this fireproof coating producing, store, transport, construction, use during not as the dimethylbenzene of solvent-based binder discharges harm of being poisoned crowd.Do not use organic solvent base-material simultaneously, save production cost, production and construction conveniently, without the advantage of fire hazard.Foaming agent can make coating expansion, and forms foam structure in coating.The single common foaming foaming and intumescing effect of general employing is bad.The present invention uses melamine and cyanoguanidines composite foamed, they are decomposed when being heated, increase and release non-flame properties gas, both the effect watering down imflammable gas suppression burning had been played, play again very strong fire retardation, thus significantly delay flammable substrate arrival ignition temperature and steel structure material to reach and lose the critical-temperature of bearing capacity and destroy, it is i.e. correspondingly greatly improved resistance to combustion time and fire endurance.
It is excellent that the preparation method of a kind of expanding fire-proof paint of the present invention has technical performance compared with the expanding fire-proof paint of current existing advanced level, of many uses, toxicity is minimum, low cost, producing and in work progress without the advantage of fire hazard.
The fireproof coating technical performance that the component of fireproof coating of the present invention is made into is excellent, of many uses.It had both met the requirement of GB 12441-1998 " finishing fire retardant paint general technical specifications ", and the technical indicator that is above standard, and also meets GB 14907-94 " fire-resistant coating for steel structure general technical specifications " and requires, and exceeds well over standard all technical.
Detailed description of the invention
Realize that the dispensing of the multipurpose expanding fireproof paint of the present invention is prepared by following (weight) %:
Example 1:
Ethene-vinyl acetate copolymer emulsion 2.1；
Modified resin 7.5；
Ammonium polyphosphate 20.8；
Chlorinated paraffin 2.1；
Pentaerythrite 10.0；
Melamine 8.3；
Cyanoguanidines 4.2；
Silica 4.2；
Titanium dioxide 1.7；
Organic silicone oil 1.6；
Calgon (10% strength solution) 4.2；
Water 33.3；
Tbp 0.007；
Penta sodium pentachlorophenate 0.035；
Sodium Benzoate 0.035.
Example 2:
Ethene-vinyl acetate copolymer emulsion 3.0；
Modified resin 7.2；
Ammonium polyphosphate 20.8；
Chlorinated paraffin 2.1；
Pentaerythrite 10.0；
Melamine 8.3；
Cyanoguanidines 4.2；
Silica 4.2；
Titanium dioxide 1.7；
Organic silicone oil 1.0；
Calgon (10% strength solution) 4.2；
Water 33.3；
Tbp 0.007；
Penta sodium pentachlorophenate 0.035；
Sodium Benzoate 0.035.
Example 3:
Ethene-vinyl acetate copolymer emulsion 5.0；
Modified resin 5.7；
Ammonium polyphosphate 20.8；
Chlorinated paraffin 2.1；
Pentaerythrite 10.0；
Melamine 8.3；
Cyanoguanidines 4.2；
Silica 8.0；
Titanium dioxide 1.7；
Calgon (10% strength solution) 4.2；
Water 30.0；
Tbp 0.007；
Penta sodium pentachlorophenate 0.035；
Sodium Benzoate 0.035.
After dispensing is chosen, prepare by following process:
(1) calgon (10% strength solution) as dispersant is put into container with water, stir standby；
(2) dispersant stirring and water are poured in ball mill, machine, while grinding, while adding ammonium polyphosphate, chlorinated paraffin, pentaerythrite, melamine, cyanoguanidines, silica, titanium dioxide, tbp, penta sodium pentachlorophenate and Sodium Benzoate by charge ratio order, grinding is allowed to fineness and reaches 70-100 micron；
(3) by compound immigration dispersion machine good for ball mill grinding adds ethene-vinyl acetate copolymer emulsion, modified resin and organic silicone oil, the multipurpose expanding fireproof paint of the present invention after starting shooting 30 minutes, is produced.
Claims (5)
1. the preparation method of an expanding fire-proof paint, it is characterised in that the dispensing of expanding fire-proof paint is prepared by following (weight) %: ethene-vinyl acetate copolymer emulsion 2.1-5.0；Modified resin 5.7-7.5；Ammonium polyphosphate 18-24；Chlorinated paraffin 1.8-2.4；Pentaerythrite 8.0-12；Melamine 7.3-9.7；Cyanoguanidines 3.5-5.0；Silica 4.2-8.3；Titanium dioxide 1.5-2.0；Organic silicone oil 0-1.6；Calgon (10% strength solution) 3.5-5.0；Water 30.0-34；Tbp 0.005-0.01；Penta sodium pentachlorophenate 0.03-0.04；Sodium Benzoate 0.03-0.04.
2. the preparation method of a kind of expanding fire-proof paint according to claim 1, it is characterised in that the dispensing of expanding fire-proof paint is prepared by following (weight) %: ethene-vinyl acetate copolymer emulsion 2.1；Modified resin 7.5；Ammonium polyphosphate 20.8；Chlorinated paraffin 2.1；Pentaerythrite 10.0；Melamine 8.3；Cyanoguanidines 4.2；Silica 4.2；Titanium dioxide 1.7；Organic silicone oil 1.6；Calgon (10% strength solution) 4.2；Water 33.3；Tbp 0.007；Penta sodium pentachlorophenate 0.035；Sodium Benzoate 0.035.
3. the preparation method of a kind of expanding fire-proof paint according to claim 1, it is characterised in that the dispensing of expanding fire-proof paint is prepared by following (weight) %: ethene-vinyl acetate copolymer emulsion 3.0；Modified resin 7.2；Ammonium polyphosphate 20.8；Chlorinated paraffin 2.1；Pentaerythrite 10.0；Melamine 8.3；Cyanoguanidines 4.2；Silica 4.2；Titanium dioxide 1.7；Organic silicone oil 1.0；Calgon (10% strength solution) 4.2；Water 33.3；Tbp 0.007；Penta sodium pentachlorophenate 0.035；Sodium Benzoate 0.035.
4. the preparation method of a kind of expanding fire-proof paint according to claim 1, it is characterised in that the dispensing of expanding fire-proof paint is prepared by following (weight) %:
Ethene-vinyl acetate copolymer emulsion 5.0；Modified resin 5.7；Ammonium polyphosphate 20.8；Chlorinated paraffin 2.1；Pentaerythrite 10.0；Melamine 8.3；Cyanoguanidines 4.2；Silica 8.0；Titanium dioxide 1.7；Calgon (10% strength solution) 4.2；Water 30.0；Tbp 0.007；Penta sodium pentachlorophenate 0.035；Sodium Benzoate 0.035.
5. the preparation method of an expanding fire-proof paint, it is characterised in that expanding fire-proof paint is prepared by following process:
(1) calgon (10% strength solution) as dispersant is put into container with water, stir standby；
(2) dispersant stirring and water are poured in ball mill, machine, while grinding, while adding ammonium polyphosphate, chlorinated paraffin, pentaerythrite, melamine, cyanoguanidines, silica, titanium dioxide, tbp, penta sodium pentachlorophenate and Sodium Benzoate by charge ratio order, grinding is allowed to fineness and reaches 70-100 micron；
(3) by compound immigration dispersion machine good for ball mill grinding adds ethene-vinyl acetate copolymer emulsion, modified resin and organic silicone oil, the multipurpose expanding fireproof paint of the present invention after starting shooting 30 minutes, is produced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510157125.XA CN106147412A (en) | 2015-04-05 | 2015-04-05 | A kind of preparation method of expanding fire-proof paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510157125.XA CN106147412A (en) | 2015-04-05 | 2015-04-05 | A kind of preparation method of expanding fire-proof paint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106147412A true CN106147412A (en) | 2016-11-23 |
Family
ID=57338737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510157125.XA Pending CN106147412A (en) | 2015-04-05 | 2015-04-05 | A kind of preparation method of expanding fire-proof paint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106147412A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106497267A (en) * | 2016-12-08 | 2017-03-15 | 吴肖颜 | A kind of expanding fire-proof paint and preparation method thereof |
| CN107057557A (en) * | 2017-05-22 | 2017-08-18 | 和县科嘉阀门铸造有限公司 | A kind of dispensing and its production method of valve production fire prevention dispersion paints |
-
2015
- 2015-04-05 CN CN201510157125.XA patent/CN106147412A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106497267A (en) * | 2016-12-08 | 2017-03-15 | 吴肖颜 | A kind of expanding fire-proof paint and preparation method thereof |
| CN107057557A (en) * | 2017-05-22 | 2017-08-18 | 和县科嘉阀门铸造有限公司 | A kind of dispensing and its production method of valve production fire prevention dispersion paints |
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Application publication date: 20161123 |