CN105906779A - High-strength flame-retardant modified polyurethane composite material - Google Patents

High-strength flame-retardant modified polyurethane composite material Download PDF

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Publication number
CN105906779A
CN105906779A CN201610249120.4A CN201610249120A CN105906779A CN 105906779 A CN105906779 A CN 105906779A CN 201610249120 A CN201610249120 A CN 201610249120A CN 105906779 A CN105906779 A CN 105906779A
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modified polyurethane
polyurethane composite
nano
strength fire
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龚文祥
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Chuzhou Huanqiu Polyurethane Technology Co Ltd
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Chuzhou Huanqiu Polyurethane Technology Co Ltd
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    • C08G18/3802—Low-molecular-weight compounds having heteroatoms other than oxygen having halogens
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    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
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    • C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6666—Compounds of group C08G18/48 or C08G18/52
    • C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
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Abstract

The invention discloses a high-strength flame-retardant modified polyurethane composite material including: hydroxyl-terminated polybutadiene, polytetrahydrofuran ether glycol, polypropylene glycol, toluene diisocynate, 4,4'-diphenylmethane diisocynate, bisphenol A, dibromoneopentyl glycol, dimethythiotoluene diamine, diaminodiphenylmethane, 2-ethyl-4-methylimidazole, dibutyltin dilaurate, diglycidyl resorcinol ether, a filling material, melamine, ammonium polyphosphate, and N,N'-bis(2-thio-5,5-dimethyl-1,3,2-dioxaphosphocyclohexyl)ethylenediamine. The high-strength flame-retardant modified polyurethane composite material has high strength, is excellent flame-retardant performance and can satisfy use demands in various fields.

Description

A kind of high-strength fire-retarding modified polyurethane composite
Technical field
The present invention relates to polyurethanes technology field, particularly relate to a kind of high-strength fire-retarding modified polyurethane composite.
Background technology
Polyurethane is the general designation on main chain containing the macromolecular compound repeating carbamate groups, has excellent The characteristics such as different wear-resisting, oil resistant, tear-resistant, resistance to chemical attack, its purposes is very wide, can substitute for rubber, Plastics, nylon etc., for airport, hotel, building materials, automobile factory, colliery factory, cement plant, condo, The fields such as villa, landscaping, colored stone art, park.But common polyurethane material easily burns, from And make its mechanical property drastically decline, during application, there is the biggest fire safety evaluating hidden danger, the big day of one's doom Make polyurethane material application in practice.
Summary of the invention
The technical problem existed based on background technology, it is multiple that the present invention proposes a kind of high-strength fire-retarding modified polyurethane Condensation material, its intensity is high, and excellent fireproof performance can meet the use requirement of multiple fields.
A kind of high-strength fire-retarding modified polyurethane composite that the present invention proposes, its raw material includes by weight: End hydroxy butadiene 20-35 part, PTMG 10-30 part, polypropylene glycol 2-15 part, toluene Diisocyanate 25-50 part, 4,4 ' methyl diphenylene diisocyanate 20-50 parts, bisphenol-A 2-5 part, Dibromoneopentyl glycol 2-8 part, dimethythiotoluene diamine 1-2 part, diaminodiphenyl-methane 2-8 part, 2-second Base-4-methylimidazole 0.01-0.1 part, dibutyl tin laurate 0.01-0.1 part, resorcinol two shrink sweet Oil ether 10-30 part, filler 10-20 part, tripolycyanamide 2-15 part, APP 1-5 part, N, N'-bis-(2-sulfur Generation-5,5-dimethyl-1,3,2-dioxy phosphorus heterocycle cyclohexyl) ethylenediamine 8-20 part.
Preferably, in its raw material, end hydroxy butadiene, PTMG, polypropylene glycol, first Phenylene diisocyanate, the weight ratio of 4,4 ' methyl diphenylene diisocyanates are 25-33:17-26:6-13: 29-44:27-45.
Preferably, in its raw material, tripolycyanamide, APP, N, N'-bis-(2-sulfur generation-5,5-dimethyl -1,3,2-dioxy phosphorus heterocycle cyclohexyl) weight ratio of ethylenediamine is 5-13:2.8-4.3:10-17.
Preferably, its raw material includes by weight: end hydroxy butadiene 28-32 part, PTMG two Alcohol 19-23 part, polypropylene glycol 8-12 part, toluene di-isocyanate(TDI) 36-40 part, 4,4 ' diphenyl methanes two Isocyanates 38-42 part, bisphenol-A 3.8-4.3 part, dibromoneopentyl glycol 5.5-6.2 part, dimethyl sulphur-based toluene Diamidogen 1.3-1.6 part, diaminodiphenyl-methane 5-6.5 part, 2-ethyl-4-methylimidazole 0.03-0.08 part, Dibutyl tin laurate 0.02-0.08 part, resorcinolformaldehyde resin 15-22 part, filler 13-17 part, Tripolycyanamide 9-11 part, APP 3.2-4 part, N, N'-bis-(2-sulfur generation-5,5-dimethyl-1,3,2-dioxy Phosphorus heterocycle cyclohexyl) ethylenediamine 11-15 part.
Preferably, its raw material includes by weight: end hydroxy butadiene 30 parts, PTMG 20 parts, polypropylene glycol 11 parts, toluene di-isocyanate(TDI) 38.5 parts, 4,4 ' methyl diphenylene diisocyanates 40 parts, bisphenol-A 4.2 parts, dibromoneopentyl glycol 5.9 parts, dimethythiotoluene diamine 1.5 parts, diaminourea two Phenylmethane 5.7 parts, 2-ethyl-4-methylimidazole 0.05 part, dibutyl tin laurate 0.06 part, isophthalic Diphenol diglycidyl ether 20 parts, filler 16 parts, tripolycyanamide 10 parts, APP 3.7 parts, N, N'-bis- (2-sulfur generation-5,5-dimethyl-1,3,2-dioxy phosphorus heterocycle cyclohexyl) ethylenediamine 13.5 parts.
Preferably, the molecular weight of described polypropylene glycol be 500,700,1000,1200,1300,1500, One or more mixture in 2000.
Preferably, described filler is compounded mix, and described compounded mix is prepared according to following technique: press 2-5 part silane coupler TM551 and 2-10 part anilinomethyl triethoxysilane are added 30-50 part by weight portion Toluene stirs, be subsequently adding 10-20 part white carbon black, 3-15 part aluminium hydroxide, 2-10 part nano-zinc borate, 3-15 part nano-calcium carbonate, 1-5 part nano titanium oxide, 2-15 part montmorillonite and 3-12 part attapulgite are super It is stirred at room temperature reaction 3-5h after sound dispersion 5-15min, reacts after terminating through being centrifuged, wash, be dried, grinding It is milled to below 200 mesh and obtains described compounded mix.
Preferably, described filler is compounded mix, and described compounded mix is prepared according to following technique: press 3.2 parts of silane coupler TM551 and 7 parts of anilinomethyl triethoxysilanes are added in 42 parts of toluene by weight portion Stir, be subsequently adding 17 parts of white carbon blacks, 12 parts of aluminium hydroxide, 5 parts of nano-zinc borates, 12 parts of nano-calcium carbonates Calcium, 3.2 parts of nano titanium oxides, 11 parts of montmorillonites and 10 parts of attapulgites, in room after ultrasonic disperse 10min Temperature lower stirring reaction 3.6h, reaction obtains institute through being centrifuged, wash, be dried, be ground to below 200 mesh after terminating State compounded mix；In the preparation process of compounded mix, with silane coupler TM551 and anilinomethyl three ethoxy Base silane is modifying agent, with white carbon black, aluminium hydroxide, nano-zinc borate, nano-calcium carbonate, nanometer titanium dioxide Titanium, montmorillonite and attapulgite are inorganic filler, and the condition reacted by control makes the hydroxyl that modifying agent hydrolyzes Base there occurs reaction with the active group of inorganic filler surface, thus introduces in a large number on the surface of inorganic filler Amino and phenyl ring obtained compounded mix, by compounded mix addition system, in system, be uniformly dispersed, On the one hand with the dibromoneopentyl glycol in system, tripolycyanamide, APP, N, N'-bis-(2-sulfur generation-5,5- Dimethyl-1,3,2-dioxy phosphorus heterocycle cyclohexyls) ethylenediamine cooperation, give the anti-flammability that composite is excellent, separately On the one hand, because introducing substantial amounts of amino on its surface, can react with isocyano and generate urea bond, thus System is formed new crosslinking points, significantly improves the mechanical property of composite, on the other hand, because of at body System introduces benzene ring structure, further increases thermostability and the resistance to ag(e)ing of composite.
Preferably, described white carbon black be white carbon black N220, one in white carbon black N330, white carbon black N990, white carbon black N550 Or multiple mixture.
Preferably, the mean diameter of described nano-zinc borate is 20-45nm, the average particle of described nano-calcium carbonate Footpath is 25-50nm；The mean diameter of described nano titanium oxide is 30-50nm, and specific surface area is 85-120m2/g。
High-strength fire-retarding modified polyurethane composite of the present invention can be according to conventional compound polyurethane material Preparation technology is prepared from.
High-strength fire-retarding modified polyurethane composite of the present invention, have selected end hydroxy butadiene, poly-four Hydrogen furan ether glycol, polypropylene glycol, toluene di-isocyanate(TDI) and 4,4 ' methyl diphenylene diisocyanates are Urethane monomer, the polyurethane obtained has the mechanical strength of brilliance, has the thermostability and resistance to of excellence simultaneously Aqueous；In N, N'-bis-(2-sulfur generation-5,5-dimethyl-1,3,2-dioxy phosphorus heterocycle cyclohexyls) ethylenediamine addition system, It is possible not only to produce substantial amounts of acid and promote into charcoal under high temperature action, also can produce substantial amounts of non-combustible simultaneously Gas, prevents the burning of polyurethane, with tripolycyanamide, APP and chain extender dibromoneopentyl glycol After cooperation, multiple fire-retardant mode is worked in coordination with, and significantly improves the anti-flammability of composite, coordinates with filler simultaneously Improve hot strength and the resistance to water of composite, it addition, bisphenol-A, dibromoneopentyl glycol, dimethyl sulphur-based Toluenediamine, diaminodiphenyl-methane coordinate as chain extender, can improve the crosslinking degree of composite, Improve the thermostability of composite, there is autocatalysis simultaneously, improve the chain extension speed of composite.
Detailed description of the invention
Below, by specific embodiment, technical scheme is described in detail.
Embodiment 1
A kind of high-strength fire-retarding modified polyurethane composite that the present invention proposes, its raw material includes by weight: End hydroxy butadiene 20 parts, PTMG 30 parts, polypropylene glycol 2 parts, toluene di-isocyanate(TDI) 50 parts, 4,4 ' methyl diphenylene diisocyanate 20 parts, bisphenol-A 5 parts, dibromoneopentyl glycol 2 parts, two (methylthiomethyl) diamidogen 2 parts, diaminodiphenyl-methane 2 parts, 2-ethyl-4-methylimidazole 0.1 part, February Dilaurylate 0.01 part, resorcinolformaldehyde resin 30 parts, filler 10 parts, tripolycyanamide 15 parts, APP 1 part, N, N'-bis-(2-sulfur generation-5,5-dimethyl-1,3,2-dioxy phosphorus heterocycle cyclohexyl) ethylenediamine 20 Part.
Embodiment 2
A kind of high-strength fire-retarding modified polyurethane composite that the present invention proposes, its raw material includes by weight: End hydroxy butadiene 35 parts, PTMG 10 parts, polypropylene glycol 15 parts, toluene diisocynate Ester 25 parts, 4,4 ' methyl diphenylene diisocyanate 50 parts, bisphenol-A 2 parts, dibromoneopentyl glycol 8 parts, Dimethythiotoluene diamine 1 part, diaminodiphenyl-methane 8 parts, 2-ethyl-4-methylimidazole 0.01 part, two Dibutyl tin laurate 0.1 part, resorcinolformaldehyde resin 10 parts, filler 20 parts, tripolycyanamide 2 parts, APP 5 parts, N, N'-bis-(2-sulfur generation-5,5-dimethyl-1,3,2-dioxy phosphorus heterocycle cyclohexyl) ethylenediamine 8 parts.
Embodiment 3
A kind of high-strength fire-retarding modified polyurethane composite that the present invention proposes, its raw material includes by weight: End hydroxy butadiene 28 parts, PTMG 23 parts, polypropylene glycol 8 parts, toluene di-isocyanate(TDI) 40 parts, 4,4 ' methyl diphenylene diisocyanate 38 parts, bisphenol-A 4.3 parts, dibromoneopentyl glycol 5.5 parts, Dimethythiotoluene diamine 1.6 parts, diaminodiphenyl-methane 5 parts, 2-ethyl-4-methylimidazole 0.08 part, Dibutyl tin laurate 0.02 part, resorcinolformaldehyde resin 22 parts, filler 13 parts, tripolycyanamide 11 parts, APP 3.2 parts, N, N'-bis-(2-sulfur generation-5,5-dimethyl-1,3,2-dioxy phosphorus heterocycle cyclohexyl) Ethylenediamine 15 parts；
Wherein, described filler is compounded mix, and described compounded mix is prepared according to following technique: by weight 2 parts of silane coupler TM551 and 10 parts of anilinomethyl triethoxysilanes are added in 30 parts of toluene by amount part to be stirred Uniformly, 20 parts of white carbon black N220,15 parts of aluminium hydroxide, 2 parts of nano-zinc borates, 15 parts of nano-calcium carbonates it are subsequently adding Calcium, 1 part of nano titanium oxide, 15 parts of montmorillonites and 3 parts of attapulgites, after ultrasonic disperse 15min at room temperature Stirring reaction 3h, reaction obtains described compound through being centrifuged, wash, be dried, be ground to below 200 mesh after terminating Filler；The mean diameter of described nano-zinc borate is 20nm, and the mean diameter of described nano-calcium carbonate is 50nm； The mean diameter of described nano titanium oxide is 30nm, and specific surface area is 120m2/g。
Embodiment 4
A kind of high-strength fire-retarding modified polyurethane composite that the present invention proposes, its raw material includes by weight: End hydroxy butadiene 32 parts, PTMG 19 parts, polypropylene glycol 12 parts, toluene diisocynate Ester 36 parts, 4,4 ' methyl diphenylene diisocyanate 42 parts, bisphenol-A 3.8 parts, dibromoneopentyl glycol 6.2 Part, dimethythiotoluene diamine 1.3 parts, diaminodiphenyl-methane 6.5 parts, 2-ethyl-4-methylimidazole 0.03 Part, dibutyl tin laurate 0.08 part, resorcinolformaldehyde resin 15 parts, filler 17 parts, trimerization Cyanamide 9 parts, APP 4 parts, N, N'-bis-(2-sulfur generation-5,5-dimethyl-1,3,2-dioxy phosphorus heterocycle cyclohexyl) Ethylenediamine 11 parts；
Wherein, described polypropylene glycol be molecular weight be that the polypropylene glycol of 700 and 1000 is by the mixing of 1:3 weight ratio Thing；
Described filler is compounded mix, and described compounded mix is prepared according to following technique: by weight by 5 Part silane coupler TM551 and 2 parts of anilinomethyl triethoxysilanes 50 parts of toluene of addition stir, so 3 parts of white carbon black N330 of rear addition, 3 parts of white carbon black N990,4 parts of white carbon black N550,3 parts of aluminium hydroxide, 10 parts of nanometer boron Acid zinc, 3 parts of nano-calcium carbonates, 5 parts of nano titanium oxides, 2 parts of montmorillonites and 12 parts of attapulgites, ultrasonic point It is stirred at room temperature reaction 5h after dissipating 5min, reacts after terminating through being centrifuged, wash, be dried, be ground to 200 mesh Hereinafter obtain described compounded mix；Wherein, the mean diameter of described nano-zinc borate is 45nm, described nanometer The mean diameter of calcium carbonate is 25nm；The mean diameter of described nano titanium oxide is 50nm, and specific surface area is 85m2/g。
Embodiment 5
A kind of high-strength fire-retarding modified polyurethane composite that the present invention proposes, its raw material includes by weight: End hydroxy butadiene 30 parts, PTMG 20 parts, polypropylene glycol 11 parts, toluene diisocynate Ester 38.5 parts, 4,4 ' methyl diphenylene diisocyanate 40 parts, bisphenol-A 4.2 parts, dibromoneopentyl glycol 5.9 parts, dimethythiotoluene diamine 1.5 parts, diaminodiphenyl-methane 5.7 parts, 2-ethyl-4-methyl miaow Azoles 0.05 part, dibutyl tin laurate 0.06 part, resorcinolformaldehyde resin 20 parts, filler 16 parts, Tripolycyanamide 10 parts, APP 3.7 parts, N, N'-bis-(2-sulfur generation-5,5-dimethyl-1,3,2-dioxy phospha Cyclohexyl) ethylenediamine 13.5 parts；
Wherein, the molecular weight of described polypropylene glycol is 500；
Described filler is compounded mix, and described compounded mix is prepared according to following technique: by weight will 3.2 parts of silane coupler TM551 and 7 parts of anilinomethyl triethoxysilanes 42 parts of toluene of addition stir, It is subsequently adding 5 parts of white carbon black N220,8 parts of white carbon black N330,2 parts of white carbon black N990,2 parts of white carbon black N550,12 parts of hydrogen-oxygens Change aluminum, 5 parts of nano-zinc borates, 12 parts of nano-calcium carbonates, 3.2 parts of nano titanium oxides, 11 parts of montmorillonites and 10 parts of attapulgites, are stirred at room temperature reaction 3.6h after ultrasonic disperse 10min, reaction terminate after through centrifugal, Wash, be dried, be ground to below 200 mesh and obtain described compounded mix；Wherein, described nano-zinc borate is flat All particle diameters are 30nm, and the mean diameter of described nano-calcium carbonate is 40nm；Described nano titanium oxide average Particle diameter is 40nm, and specific surface area is 100m2/g。
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention not office Being limited to this, any those familiar with the art is in the technical scope that the invention discloses, according to this The technical scheme of invention and inventive concept thereof in addition equivalent or change, all should contain the protection in the present invention Within the scope of.

Claims (10)

1. a high-strength fire-retarding modified polyurethane composite, it is characterised in that its raw material includes by weight: End hydroxy butadiene 20-35 part, PTMG 10-30 part, polypropylene glycol 2-15 part, toluene Diisocyanate 25-50 part, 4,4 ' methyl diphenylene diisocyanate 20-50 parts, bisphenol-A 2-5 part, Dibromoneopentyl glycol 2-8 part, dimethythiotoluene diamine 1-2 part, diaminodiphenyl-methane 2-8 part, 2- Ethyl-4-methylimidazole 0.01-0.1 part, dibutyl tin laurate 0.01-0.1 part, resorcinol two shrink Glycerin ether 10-30 part, filler 10-20 part, tripolycyanamide 2-15 part, APP 1-5 part, N, N'-bis-(2- Sulfur generation-5,5-dimethyl-1,3,2-dioxy phosphorus heterocycle cyclohexyl) ethylenediamine 8-20 part.
High-strength fire-retarding modified polyurethane composite the most according to claim 1, it is characterised in that it is former In material, end hydroxy butadiene, PTMG, polypropylene glycol, toluene di-isocyanate(TDI), 4,4 ' The weight ratio of methyl diphenylene diisocyanate is 25-33:17-26:6-13:29-44:27-45.
High-strength fire-retarding modified polyurethane composite the most according to claim 1 or claim 2, it is characterised in that its In raw material, tripolycyanamide, APP, N, N'-bis-(2-sulfur generation-5,5-dimethyl-1,3,2-dioxy phosphas Cyclohexyl) weight ratio of ethylenediamine is 5-13:2.8-4.3:10-17.
4. according to high-strength fire-retarding modified polyurethane composite according to any one of claim 1-3, its feature Being, its raw material includes by weight: end hydroxy butadiene 28-32 part, PTMG 19-23 Part, polypropylene glycol 8-12 part, toluene di-isocyanate(TDI) 36-40 part, 4,4 ' diphenylmethane diisocyanates Ester 38-42 part, bisphenol-A 3.8-4.3 part, dibromoneopentyl glycol 5.5-6.2 part, dimethythiotoluene diamine 1.3-1.6 part, diaminodiphenyl-methane 5-6.5 part, 2-ethyl-4-methylimidazole 0.03-0.08 part, two Dibutyl tin laurate 0.02-0.08 part, resorcinolformaldehyde resin 15-22 part, filler 13-17 part, Tripolycyanamide 9-11 part, APP 3.2-4 part, N, N'-bis-(2-sulfur generation-5,5-dimethyl-1,3,2-dioxy Phosphorus heterocycle cyclohexyl) ethylenediamine 11-15 part.
5. according to high-strength fire-retarding modified polyurethane composite according to any one of claim 1-4, its feature Being, its raw material includes by weight: end hydroxy butadiene 30 parts, PTMG 20 parts, Polypropylene glycol 11 parts, toluene di-isocyanate(TDI) 38.5 parts, 4,4 ' methyl diphenylene diisocyanate 40 parts, Bisphenol-A 4.2 parts, dibromoneopentyl glycol 5.9 parts, dimethythiotoluene diamine 1.5 parts, diamino-diphenyl first 5.7 parts of alkane, 2-ethyl-4-methylimidazole 0.05 part, dibutyl tin laurate 0.06 part, resorcinol two Glycidyl ether 20 parts, filler 16 parts, tripolycyanamide 10 parts, APP 3.7 parts, N, N'-bis-(2-sulfur generation -5,5-dimethyl-1,3,2-dioxy phosphorus heterocycle cyclohexyl) ethylenediamine 13.5 parts.
6. according to high-strength fire-retarding modified polyurethane composite according to any one of claim 1-5, its feature Being, the molecular weight of described polypropylene glycol is in 500,700,1000,1200,1300,1500,2000 One or more mixture.
7. according to high-strength fire-retarding modified polyurethane composite according to any one of claim 1-6, its feature Being, described filler is compounded mix, and described compounded mix is prepared according to following technique: by weight 2-5 part silane coupler TM551 and 2-10 part anilinomethyl triethoxysilane are added in 30-50 part toluene Stir, be subsequently adding 10-20 part white carbon black, 3-15 part aluminium hydroxide, 2-10 part nano-zinc borate, 3-15 Part nano-calcium carbonate, 1-5 part nano titanium oxide, 2-15 part montmorillonite and 3-12 part attapulgite, ultrasonic point It is stirred at room temperature reaction 3-5h after dissipating 5-15min, reacts after terminating through being centrifuged, wash, be dried, being ground to Described compounded mix is obtained below 200 mesh.
8. according to high-strength fire-retarding modified polyurethane composite according to any one of claim 1-7, its feature Being, described filler is compounded mix, and described compounded mix is prepared according to following technique: by weight 3.2 parts of silane coupler TM551 and 7 parts of anilinomethyl triethoxysilanes are added in 42 parts of toluene and stirs all Even, be subsequently adding 17 parts of white carbon blacks, 12 parts of aluminium hydroxide, 5 parts of nano-zinc borates, 12 parts of nano-calcium carbonates, 3.2 Part nano titanium oxide, 11 parts of montmorillonites and 10 parts of attapulgites, be stirred at room temperature after ultrasonic disperse 10min Reaction 3.6h, reaction obtains described compound fill out through being centrifuged, wash, be dried, be ground to below 200 mesh after terminating Material.
9. according to high-strength fire-retarding modified polyurethane composite described in claim 7 or 8, it is characterised in that institute State white carbon black be white carbon black N220, one or more mixing in white carbon black N330, white carbon black N990, white carbon black N550 Thing.
10. according to high-strength fire-retarding modified polyurethane composite according to any one of claim 7-9, its feature Being, the mean diameter of described nano-zinc borate is 20-45nm, and the mean diameter of described nano-calcium carbonate is 25-50nm；The mean diameter of described nano titanium oxide is 30-50nm, and specific surface area is 85-120m2/g。
CN201610249120.4A 2016-04-19 2016-04-19 High-strength flame-retardant modified polyurethane composite material Pending CN105906779A (en)

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CN107760015A (en) * 2017-11-08 2018-03-06 安徽省瑞发复合材料制造有限公司 A kind of special thermal polyurethane composite of circuit board
CN107760016A (en) * 2017-11-08 2018-03-06 安徽省瑞发复合材料制造有限公司 A kind of circuit board special-purpose anti-flaming waterproof polyurethane composite
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CN110799563A (en) * 2017-06-27 2020-02-14 雅宝公司 Flame retardant polyurethane foam
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CN110799563A (en) * 2017-06-27 2020-02-14 雅宝公司 Flame retardant polyurethane foam
CN110799563B (en) * 2017-06-27 2022-06-03 雅宝公司 Flame retardant polyurethane foam
CN107778836A (en) * 2017-11-08 2018-03-09 安徽省瑞发复合材料制造有限公司 A kind of special compound polyurethane material of circuit board
CN107760016A (en) * 2017-11-08 2018-03-06 安徽省瑞发复合材料制造有限公司 A kind of circuit board special-purpose anti-flaming waterproof polyurethane composite
CN107778440A (en) * 2017-11-08 2018-03-09 安徽省瑞发复合材料制造有限公司 A kind of special corrosion-resistant compound polyurethane material of circuit board
CN107778842A (en) * 2017-11-08 2018-03-09 安徽省瑞发复合材料制造有限公司 A kind of special weather-resistant pu composite of circuit board
CN107674408A (en) * 2017-11-08 2018-02-09 安徽省瑞发复合材料制造有限公司 A kind of high tenacity high flame-retardant polyurethane circuit board material
CN107760015A (en) * 2017-11-08 2018-03-06 安徽省瑞发复合材料制造有限公司 A kind of special thermal polyurethane composite of circuit board
CN107722606A (en) * 2017-11-08 2018-02-23 安徽省瑞发复合材料制造有限公司 A kind of special heat-and corrosion-resistant compound polyurethane material of circuit board
CN108164988A (en) * 2017-12-19 2018-06-15 滁州环球聚氨酯科技有限公司 A kind of electric forklift wheel polyurethane material
CN108395609A (en) * 2018-02-12 2018-08-14 宁国市千洪电子有限公司 A kind of mobile phone composite foam material
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