CN102702962A - Expansion type fire-retardant coating - Google Patents

Expansion type fire-retardant coating Download PDF

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Publication number
CN102702962A
CN102702962A CN2012101970294A CN201210197029A CN102702962A CN 102702962 A CN102702962 A CN 102702962A CN 2012101970294 A CN2012101970294 A CN 2012101970294A CN 201210197029 A CN201210197029 A CN 201210197029A CN 102702962 A CN102702962 A CN 102702962A
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coating
mixture
resin
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parts
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CN102702962B (en
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祝盆鑫
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TIANCHANG YINHU PAINT Co Ltd
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TIANCHANG YINHU PAINT Co Ltd
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Abstract

The invention relates to an expansion type fire-retardant coating which contains organic silicon resin, and particularly comprises the components in part by weight: 10-40 parts of resin, 10-40 parts of catalyst, 5-20 parts of charcoal forming agent, 5-20 parts of foaming agent, and 3-15 parts of flame retardant, wherein the resin is selected from one or more of epoxy resin, phenolic resin, and acrylic resin as well as organic silicon resin. According to the invention, the shortcoming that the traditional fire-retardant coating is poor in heat stability is overcome; the coating has the characteristics of good fireproofing heat-insulating property, good bonding force, high strength, capability of bearing high and low-temperature circulation influence, excellent water resistance, acid resistance and salt corrosion resistance of coating layer, difficult in falling, stability in storage, good decoration property, convenience for construction and the like; during combustion, no smog or little smog is generated; and the coating is particularly suitable to be used as a fire-resistant coating for ultra-thin steel structures, veneer type fire-retardant coating and cable fire-retardant coating.

Description

Expanding fire-proof paint
Technical field
The present invention relates to frie retardant coating, particularly expanding fire-proof paint can be used as steel structure fire-proof paint, finishing fire retardant paint, cable fire-refractory coating.
Background technology
Frie retardant coating generally is divided into two types of expanded polystyrene veneer and non-expansion types from fire prevention mechanism.The non-expansion type frie retardant coating is a purpose of leaning on himself high-leveled and difficult combustion or uninflammability to reach fire-retardant fireproof, and the flameproof effect that wants to reach good must be coated with very thickly, adds fire retardants such as halogen-containing in a large number, nitrogen, phosphorus, produces a large amount of toxic gases.The expanding fire-proof paint expanded by heating of filming exactly forms cellular charring layer; Flame heat regulating is isolated and reduce or slow down transmission ground; Coating decomposites non-flammable gas when high temperature simultaneously; Isolated and diluted air, thus in addition a series of physics of when fire prevention, taking place of coating and chemical reaction absorbed a large amount of heats play fire-retardant with delay flame and expand, spread, the time of fire extinguishing is provided for people.Behind the expanding fire-proof paint expanded by heating; The porous foam defence layer that produces; Than former thick coating tens even hundred times, and the coating at least low one magnitude of the thermal conductivity ratio end of the back foam layer that expands before expanding, be coated with to such an extent that very thinly just can reach good flameproof effect.
U.S. Pat .6054513 has introduced a kind of frie retardant coating, when meeting fire, produces the carbonization sealing coat, excellent storage stability under hygrothermal environment, but do not relate to the problem of smoke treated.
CN1164701C discloses a kind of expanding fire-proof paint; Comprise compositions such as vinyl resin, catalyzer, char-forming agent, whipping agent, fire retardant, strengthening agent, color stuffing, auxiliary agent, smog inhibitor; And, catalyzer is carried out surface treatment and adds the over-all properties that smog inhibitor improves coating the vinyl resin modification.When filming expanded by heating, form the charring layer of nonflammable two-dimensional space structure, flame heat regulating is isolated and reduce the conduction to ground, coating decomposites non-flammable gas when high temperature simultaneously, and isolated and diluent air stops the flame expansion, spreads.This coating is suitable for the flame-proof finishing of steelwork, wood substrate, cable etc.
Summary of the invention
The expanding fire-proof paint that the purpose of this invention is to provide a kind of high comprehensive performance, said coating has solved the shortcoming of present frie retardant coating poor heat stability, has very excellent fire resistance and thermal stability.
In order to achieve the above object, the present invention has adopted following technical scheme:
Said expanding fire-proof paint, its resin comprises silicone resin.The adding of silicone resin can significantly improve the thermostability of paint coatings.
Said coating also comprises the mixture of a kind of in epoxy resin, resol, the vinyl resin or at least two kinds.Said mixture is the mixture of epoxy resin and resol for example, the mixture of resol and vinyl resin, the mixture of epoxy resin and vinyl resin, the mixture of epoxy resin, resol and vinyl resin.
As optimal technical scheme, said coating comprises by weight:
Said resin is selected from a kind of or at least two kinds the mixture and the mixture of silicone resin in epoxy resin, resol, the vinyl resin.Said mixture is the mixture of epoxy resin and resol for example, the mixture of resol and vinyl resin, the mixture of epoxy resin and vinyl resin, the mixture of epoxy resin, resol and vinyl resin.
As optimal technical scheme, said coating comprises by weight:
Said resin is selected from a kind of or at least two kinds the mixture and the mixture of silicone resin in epoxy resin, resol, the vinyl resin.Said mixture is the mixture of epoxy resin and resol for example, the mixture of resol and vinyl resin, the mixture of epoxy resin and vinyl resin, the mixture of epoxy resin, resol and vinyl resin.
Preferably, said coating comprises by weight:
Said resin is selected from a kind of or at least two kinds the mixture and the mixture of silicone resin in epoxy resin, resol, the vinyl resin.Said mixture is the mixture of epoxy resin and resol for example, the mixture of resol and vinyl resin, the mixture of epoxy resin and vinyl resin, the mixture of epoxy resin, resol and vinyl resin.
Said silicone resin is selected from the mixture of a kind of in polyester modification siloxanes, polyether modified siloxane, YSR 3286, the PSI or at least two kinds.Said mixture is the mixture of PSI and YSR 3286 for example; The mixture of polyether modified siloxane and polyester modification siloxanes; The mixture of PSI and polyether modified siloxane; The mixture of YSR 3286 and polyester modification siloxanes; The mixture of PSI, YSR 3286 and polyether modified siloxane, the mixture of polyester modification siloxanes, PSI and YSR 3286, the mixture of polyether modified siloxane, polyester modification siloxanes, PSI and YSR 3286.
Catalyzer is one of crucial composition of expanding fire-proof paint; It promotes and improves the thermal decomposition process of coating; The amount of the flammable tar that produces when minimizing or the thermolysis of prevention organism, aldehyde, ketone etc. promotes the generation of non-flammable gases to reach the formation of at high temperature stable three-dimensional structure charring layer.As long as can be under proper temperature (it is generally acknowledged 150~250 ℃), the material that the composition that decomposites can dewater to the material of hydroxyl all can be as catalyzer.Preferably, said catalyzer is selected from the mixture of a kind of in the two trimeric cyanamides of primary ammonium phosphate, urea phosphate, ammonium polyphosphate, ammonium polyphosphate potassium, Potassium tripolyphosphate, melamine phosphate, phosphoric acid, melamine pyrophosphate, organophosphate, borate, ester and verivate, sulphonate and the verivate or at least two kinds.Said mixture is the mixture of sulphonate and verivate and ester and verivate for example; The mixture of borate and organophosphate, the mixture of the two trimeric cyanamides of melamine pyrophosphate and phosphoric acid, the mixture of melamine phosphate and Potassium tripolyphosphate; The mixture of ammonium polyphosphate potassium and ammonium polyphosphate; The mixture of organophosphate and melamine pyrophosphate, the mixture of two trimeric cyanamides of phosphoric acid and melamine phosphate, the mixture of Potassium tripolyphosphate and ammonium polyphosphate potassium; The mixture of urea phosphate and primary ammonium phosphate; The mixture of primary ammonium phosphate and sulphonate and verivate, ester and verivate and boratory mixture, the mixture of ammonium polyphosphate potassium and melamine phosphate.
Char-forming agent is the basic substance that coating at high temperature forms the foam carburization zone of nonflammable three-D space structure, and the foam carburization zone is played skeleton function.Char-forming agent will be complementary with catalyzer on decomposition temperature; The validity of char-forming agent depends on the content of hydroxyl and carbon atom in the molecule, and the quantity of hydroxyl is big, and the dehydrated speed of char-forming agent is very fast relatively; But the wetting ability of char-forming agent itself is high; So and the quantity of non-hydroxyl is high more good more, carbon content is high, molecule is big, and is favourable to the intensity and the compactness of the charring layer of final formation.Said char-forming agent is selected from the mixture of a kind of in starch, Mierocrystalline cellulose and verivate, sucrose, sorbyl alcohol, tetramethylolmethane and verivate, epoxy resin, the resol or at least two kinds.Said mixture is the mixture of resol and epoxy resin for example; The mixture of tetramethylolmethane and verivate and sorbyl alcohol; The mixture of sucrose and Mierocrystalline cellulose and verivate, the mixture of starch and resol, the mixture of epoxy resin and tetramethylolmethane and verivate; The mixture of sorbyl alcohol and sucrose, the mixture of Mierocrystalline cellulose and verivate and starch.
Whipping agent discharges non-flammable gases-----hydrogen halide, ammonia, nitrogen and compound thereof, steam in certain temperature.Whipping agent commonly used has: the phosphoric acid salt of Dyhard RU 100, trimeric cyanamide, clorafin, urea, trimeric cyanamide and borate etc.In order to prolong foamed time; Make the height of charring layer better; Generally all adopt a plurality of whipping agents to share, it is whipping agent that system of the present invention adopts trimeric cyanamide and clorafin, and also can adopt melamine salt/ester (like melamine phosphate) and clorafin is whipping agent.
Said coating also comprises the mixture of a kind of in strengthening agent, color stuffing, solvent, the smog inhibitor or at least two kinds;
The inventor proves that through test of many times foaming height also not exclusively is directly proportional with fire endurance, if expanding layer is loose, high more its fire endurance that foams is poor more, and the intensity that therefore increases expanding layer is one of key that improves the frie retardant coating fire endurance.Preferably, said strengthening agent is a carbon black.
Preferably, the parts by weight of said strengthening agent are 1 ~ 10, for example 2,3,4,5,6,7,8,9, and preferred 2 ~ 8, further preferred 3 ~ 5.
As far as expanding fire-proof paint, owing to added a large amount of fire-proof additives, so color stuffing should not be added, surpassing 20% (weight percentage) promptly influences its expansion effect greatly.Select as far as possible when selecting color stuffing that tinting strength is high, hot reflection coefficient is high, thermal conductivity is low, can play mineral dye, the filler of skeleton function to charring layer, pigment dyestuff adds less or does not add as far as possible.Generally make tinting pigment with titanium white, zinc oxide etc.Preferably, the parts by weight of said color stuffing are 1 ~ 20, for example 2,4,6,8,10,12,14,16,18,19, and preferred 2 ~ 18, further preferred 3 ~ 15.
Preferably, the parts by weight of said solvent are 15 ~ 30, for example 16,18,20,22,24,26,28,29, and preferred 18 ~ 30, further preferred 20 ~ 28.Said solvent is selected from the mixture of a kind of in ethanol, methyl alcohol, toluene, YLENE, ETHYLE ACETATE, isopropylcarbinol, the pimelinketone or at least two kinds.
In order to reduce the generating capacity of toxic smog, the present invention has also added smog inhibitor specially, and smog inhibitor commonly used has: white lake, Marinco H, aluminum oxide, lime carbonate, zinc borate, zinc molybdate etc.For the purpose of the present invention, preferably zinc borate, aluminum oxide.Preferably, the parts by weight of said smog inhibitor are 1 ~ 5, preferred 1.5 ~ 4, further preferred 2 ~ 4.
" comprising " of the present invention, mean it except that said component, can also comprise other components, these other components are given said coating different characteristic.In addition, " comprising " of the present invention, can also replace with enclosed " being " or " by ... form ".The for example said coating of the present invention can also comprise an amount of dispersion agent and sinking agent, and dispersion agent and antisettling agent have improved the homogeneity of execution of coating performance and package stability and foaming.
Said solvent is selected from the mixture of a kind of in ethanol, methyl alcohol, toluene, YLENE, ETHYLE ACETATE, isopropylcarbinol, the pimelinketone or at least two kinds.
Expanding fire-proof paint of the present invention prepares with this area method in common; For example use following method: it is subsequent use to have dissolved resin earlier, weighs up each component by formula ratio then, adds in the material-compound tank; Stir; Going up three-roll grinder then, to be ground to fineness qualified, is uniformly dispersed with impeller, filters and packages discharging.
Expanding fire-proof paint of the present invention has overcome the shortcoming of existing frie retardant coating poor heat stability; Said coating has that fire insulation performance is good, bonding force is good, intensity is high, can stand high low temperature round-robin influence, and the water tolerance of coating, acid resistance, salt tolerant corrodibility are good, difficult drop-off; Shelf-stable; Good decorative property, characteristics such as easy construction, non smoke or few smog produce during burning.Be particularly suitable for doing super-thin steel structure fire-proof paint, finishing fire retardant paint and cable fire-refractory coating.
Embodiment
For the present invention is described better, be convenient to understand technical scheme of the present invention, typical case of the present invention but non-restrictive example is following:
Embodiment 1
Said coating comprises by weight:
Embodiment 2
Said coating comprises by weight:
Embodiment 3
Said coating comprises by weight:
Embodiment 4
Embodiment 5
Embodiment 6
The preparation method of the said coating of embodiment 1-6 is described below: it is subsequent use to have dissolved resin earlier, weighs up each component by formula ratio then, adds in the material-compound tank; Stir; Going up three-roll grinder then, to be ground to fineness qualified, is uniformly dispersed with impeller, filters and packages discharging.
Comparative Examples
Comparative Examples is CN1164701C the disclosed embodiments 4.Said coating comprises by weight:
10 parts of vinyl resins, 2 parts of chlorinated polyether resins, 28 parts of the catalyzer of the modification of embodiment 2,15 parts of MP, 8 parts of Dipentaerythritols, 5 parts in iron white powder, 3 parts of clorafins, 2 parts of zinc borates, 2 parts of wollastonites.
The performance index of embodiment 1-6 and the said coating of Comparative Examples are as shown in table 1.
The said coating property index of table 1 embodiment 1-6 and Comparative Examples
The contrast of fire resistance laboratory: the foregoing description 1-6 and Comparative Examples are filmed, and apart from coating 5cm baking, coat-thickness 1mm receives fire time 5min with alcohol blast burner flame.The result: more than film and all can form the charring layer of comparison even compact.
When coating is used for wood substrate as finishing paint,, carry out the fire resistance test with reference to GB12442.1-95; When embodiment of the invention 1-6 coating is 0.5mm when build; Behind spirit lamp baking 30min, coating expansion height 1-2cm, carbonization does not take place or slight carbonization takes place in wood substrate.
When coating is used for the steelwork ground, carry out the fire resistance test according to GB14907-94, substantially exceed the index that requires in the GB,, and the said coating index of embodiment 1-6 obviously is superior to Comparative Examples.
When as cable fire-refractory coating, carry out the fire resistance test according to GA181-1998, coating according to the invention reaches category-A frie retardant coating index.
Should be noted that and understand, under the situation that does not break away from the desired the spirit and scope of the present invention of accompanying Claim, can make various modifications and improvement the present invention of above-mentioned detailed description.Therefore, the scope of the technical scheme of requirement protection does not receive the restriction of given any specific exemplary teachings.
Applicant's statement, the present invention explains detailed composition of the present invention through the foregoing description, but the present invention is not limited to above-mentioned detailed composition, does not mean that promptly the present invention must rely on above-mentioned detailed composition and could implement.The person of ordinary skill in the field should understand, and to any improvement of the present invention, to the interpolation of the equivalence replacement of each raw material of product of the present invention and ancillary component, the selection of concrete mode etc., all drops within protection scope of the present invention and the open scope.

Claims (10)

1. an expanding fire-proof paint is characterized in that, said coating comprises silicone resin.
2. coating as claimed in claim 1 is characterized in that, said coating also comprises the mixture of a kind of in epoxy resin, resol, the vinyl resin or at least two kinds.
3. according to claim 1 or claim 2 coating is characterized in that said coating comprises by weight:
Said resin is selected from a kind of or at least two kinds the mixture and the mixture of silicone resin in epoxy resin, resol, the vinyl resin.
4. like the described coating of one of claim 1-3, it is characterized in that said coating comprises by weight:
Said resin is selected from a kind of or at least two kinds the mixture and the mixture of silicone resin in epoxy resin, resol, the vinyl resin.
5. like the described coating of one of claim 1-4, it is characterized in that said coating comprises by weight:
Said resin is selected from a kind of or at least two kinds the mixture and the mixture of silicone resin in epoxy resin, resol, the vinyl resin.
6. like the described coating of one of claim 1-5, it is characterized in that said silicone resin is selected from the mixture of a kind of in polyester modification siloxanes, polyether modified siloxane, YSR 3286, the PSI or at least two kinds;
Preferably, said catalyzer is selected from the mixture of a kind of in the two trimeric cyanamides of primary ammonium phosphate, urea phosphate, ammonium polyphosphate, ammonium polyphosphate potassium, Potassium tripolyphosphate, melamine phosphate, phosphoric acid, melamine pyrophosphate, organophosphate, borate, ester and verivate, sulphonate and the verivate or at least two kinds.
7. like the described coating of one of claim 1-6, it is characterized in that said char-forming agent is selected from the mixture of a kind of in starch, Mierocrystalline cellulose and verivate, sucrose, sorbyl alcohol, tetramethylolmethane and verivate, epoxy resin, the resol or at least two kinds.
8. like the described coating of one of claim 1-7, it is characterized in that said coating also comprises the mixture of a kind of in strengthening agent, color stuffing, solvent, the smog inhibitor or at least two kinds;
Preferably, said strengthening agent is a carbon black;
Preferably, the parts by weight of said strengthening agent are 1 ~ 10, preferred 2 ~ 8, further preferred 3 ~ 5;
Preferably, the parts by weight of said color stuffing are 1 ~ 20, preferred 2 ~ 18, further preferred 3 ~ 15;
Preferably, the parts by weight of said solvent are 15 ~ 30, preferred 18 ~ 30, further preferred 20 ~ 28;
Preferably, the parts by weight of said smog inhibitor are 1 ~ 5, preferred 1.5 ~ 4, further preferred 2 ~ 4.
9. like the described coating of one of claim 1-8, it is characterized in that said solvent is selected from the mixture of a kind of in ethanol, methyl alcohol, toluene, YLENE, ETHYLE ACETATE, isopropylcarbinol, the pimelinketone or at least two kinds.
10. like the described coating of one of claim 1-9, it is characterized in that said coating comprises by weight:
Wherein, said resin is selected from a kind of or at least two kinds the mixture and the mixture of silicone resin in epoxy resin, resol, the vinyl resin.
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Cited By (21)

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CN102911598A (en) * 2012-11-29 2013-02-06 北京京能恒基新材料有限公司 Foaming thermal insulation coating and preparation method thereof
CN103254667A (en) * 2013-05-31 2013-08-21 苏州富通高新材料科技股份有限公司 Phenolic resin fire-retardant paint
CN103725150A (en) * 2013-12-23 2014-04-16 安徽省金盾涂料有限责任公司 Novel fireproof paint
CN103805058A (en) * 2013-10-21 2014-05-21 溧阳市浙大产学研服务中心有限公司 Fireproof paint for steel structure buildings, and manufacturing method and coating technique thereof
CN104194574A (en) * 2014-09-28 2014-12-10 芜湖县双宝建材有限公司 Coating with high flame retardancy and strong adhesive force
CN104231826A (en) * 2014-09-19 2014-12-24 苏州云舒新材料科技有限公司 Waterproof coating for furniture and preparation method of waterproof coating
CN104263182A (en) * 2014-10-29 2015-01-07 芜湖县双宝建材有限公司 Highly-flame-retardant modified acrylate coating
CN104481103A (en) * 2014-11-18 2015-04-01 上海华峰普恩聚氨酯有限公司 Rigid foam polyurethane fireproof, insulation and decorative plate and production method thereof
CN104497801A (en) * 2014-11-21 2015-04-08 芜湖市鸿坤汽车零部件有限公司 Flame retardant fireproof coating for switch equipment and preparation method thereof
CN104804587A (en) * 2015-04-23 2015-07-29 苏州劲元油压机械有限公司 Exterior antirust coating for heavy type oil hydraulic cylinder and preparation process of exterior antirust coating
CN105358633A (en) * 2013-07-16 2016-02-24 阿克佐诺贝尔国际涂料股份有限公司 Intumescent coating composition
CN106010082A (en) * 2016-06-30 2016-10-12 宁波江东波莫纳电子科技有限公司 Preparation method for preparing fire-retardant coating from polymerized rosin modified boron phenolic resin
CN106590258A (en) * 2016-12-24 2017-04-26 严志海 Steel structure fireproof paint
CN107141939A (en) * 2017-06-16 2017-09-08 安徽康瑞高科新材料技术工程有限公司 A kind of fireproof coating
CN107312430A (en) * 2017-07-13 2017-11-03 西安建筑科技大学 A kind of modified expanded type fire retarding wood composite coating of silicon ash
CN107418363A (en) * 2017-08-30 2017-12-01 常州豪坦商贸有限公司 A kind of preparation method of expanding fire-proof paint
CN107936824A (en) * 2017-11-30 2018-04-20 明光市泰丰新材料有限公司 A kind of weather-proof high viscous environment-friendlyfireproof fireproof paint and preparation method thereof
CN109337521A (en) * 2018-10-30 2019-02-15 宿松汉邦新型建材有限公司 A kind of fire-proof and thermal-insulation coating and preparation method thereof for adding snowflake white sand
CN109535889A (en) * 2018-11-01 2019-03-29 惠州市三民实业有限公司 A kind of fireproof coating and preparation method thereof
CN110317510A (en) * 2019-08-06 2019-10-11 纯钧新材料(深圳)有限公司 Fireproof coating of intumescent and preparation method thereof
CN110655844A (en) * 2019-11-04 2020-01-07 扬州彩虹粉末涂料有限公司 Fireproof flame-retardant coating for liquefied gas cylinder and preparation method of coating

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CN102911598A (en) * 2012-11-29 2013-02-06 北京京能恒基新材料有限公司 Foaming thermal insulation coating and preparation method thereof
CN103254667A (en) * 2013-05-31 2013-08-21 苏州富通高新材料科技股份有限公司 Phenolic resin fire-retardant paint
CN105358633B (en) * 2013-07-16 2017-07-21 阿克佐诺贝尔国际涂料股份有限公司 Intumescent coating composition
CN105358633A (en) * 2013-07-16 2016-02-24 阿克佐诺贝尔国际涂料股份有限公司 Intumescent coating composition
CN103805058A (en) * 2013-10-21 2014-05-21 溧阳市浙大产学研服务中心有限公司 Fireproof paint for steel structure buildings, and manufacturing method and coating technique thereof
CN103725150A (en) * 2013-12-23 2014-04-16 安徽省金盾涂料有限责任公司 Novel fireproof paint
CN104231826A (en) * 2014-09-19 2014-12-24 苏州云舒新材料科技有限公司 Waterproof coating for furniture and preparation method of waterproof coating
CN104231826B (en) * 2014-09-19 2016-08-24 苏州云舒新材料科技有限公司 A kind of furniture water resistant coating and preparation method thereof
CN104194574B (en) * 2014-09-28 2016-08-24 芜湖县双宝建材有限公司 A kind of high fire-retardance high adhesion paint
CN104194574A (en) * 2014-09-28 2014-12-10 芜湖县双宝建材有限公司 Coating with high flame retardancy and strong adhesive force
CN104263182A (en) * 2014-10-29 2015-01-07 芜湖县双宝建材有限公司 Highly-flame-retardant modified acrylate coating
CN104481103A (en) * 2014-11-18 2015-04-01 上海华峰普恩聚氨酯有限公司 Rigid foam polyurethane fireproof, insulation and decorative plate and production method thereof
CN104497801A (en) * 2014-11-21 2015-04-08 芜湖市鸿坤汽车零部件有限公司 Flame retardant fireproof coating for switch equipment and preparation method thereof
CN104804587A (en) * 2015-04-23 2015-07-29 苏州劲元油压机械有限公司 Exterior antirust coating for heavy type oil hydraulic cylinder and preparation process of exterior antirust coating
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CN106010082B (en) * 2016-06-30 2018-05-11 江西天祥科技有限公司 A kind of newtrex modified boron containing phenolic resin prepares the preparation method of fireproof coating
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CN107141939A (en) * 2017-06-16 2017-09-08 安徽康瑞高科新材料技术工程有限公司 A kind of fireproof coating
CN107312430A (en) * 2017-07-13 2017-11-03 西安建筑科技大学 A kind of modified expanded type fire retarding wood composite coating of silicon ash
CN107312430B (en) * 2017-07-13 2019-11-26 西安建筑科技大学 A kind of modified expanded type fire retarding wood composite coating of silicon ash
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CN109535889A (en) * 2018-11-01 2019-03-29 惠州市三民实业有限公司 A kind of fireproof coating and preparation method thereof
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