CN103396523B - Solar water heater water tank polyether glycol glycol foam organic fireproof thermal-insulation material - Google Patents
Solar water heater water tank polyether glycol glycol foam organic fireproof thermal-insulation material Download PDFInfo
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- CN103396523B CN103396523B CN201310294729.XA CN201310294729A CN103396523B CN 103396523 B CN103396523 B CN 103396523B CN 201310294729 A CN201310294729 A CN 201310294729A CN 103396523 B CN103396523 B CN 103396523B
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- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 title claims abstract description 99
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 229920000570 polyether Polymers 0.000 title claims abstract description 63
- 239000004721 Polyphenylene oxide Substances 0.000 title claims abstract description 55
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 239000012774 insulation material Substances 0.000 title claims abstract description 8
- 239000006260 foam Substances 0.000 title claims description 80
- 238000005187 foaming Methods 0.000 claims abstract description 29
- 239000003063 flame retardant Substances 0.000 claims abstract description 25
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- 239000002994 raw material Substances 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims description 31
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 15
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
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- CAAULPUQFIIOTL-UHFFFAOYSA-L methyl phosphate(2-) Chemical group COP([O-])([O-])=O CAAULPUQFIIOTL-UHFFFAOYSA-L 0.000 claims description 7
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 4
- 229920001228 polyisocyanate Polymers 0.000 claims description 3
- 239000005056 polyisocyanate Substances 0.000 claims description 3
- 229920006389 polyphenyl polymer Polymers 0.000 claims description 3
- 229920000909 polytetrahydrofuran Polymers 0.000 claims description 3
- 239000002243 precursor Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 28
- 229920002635 polyurethane Polymers 0.000 abstract description 25
- 239000004814 polyurethane Substances 0.000 abstract description 24
- 238000009413 insulation Methods 0.000 abstract description 22
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 abstract description 9
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- VONWDASPFIQPDY-UHFFFAOYSA-N dimethyl methylphosphonate Chemical compound COP(C)(=O)OC VONWDASPFIQPDY-UHFFFAOYSA-N 0.000 description 7
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- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 4
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- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
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- 231100000252 nontoxic Toxicity 0.000 description 2
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- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- MEIRRNXMZYDVDW-MQQKCMAXSA-N (2E,4E)-2,4-hexadien-1-ol Chemical compound C\C=C\C=C\CO MEIRRNXMZYDVDW-MQQKCMAXSA-N 0.000 description 1
- UPLPHRJJTCUQAY-WIRWPRASSA-N 2,3-thioepoxy madol Chemical compound C([C@@H]1CC2)[C@@H]3S[C@@H]3C[C@]1(C)[C@@H]1[C@@H]2[C@@H]2CC[C@](C)(O)[C@@]2(C)CC1 UPLPHRJJTCUQAY-WIRWPRASSA-N 0.000 description 1
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- UXLBXTIBYMXRNX-UHFFFAOYSA-N 2-o-(8-methylnonyl) 1-o-octyl benzene-1,2-dicarboxylate Chemical compound CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC(C)C UXLBXTIBYMXRNX-UHFFFAOYSA-N 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 208000005623 Carcinogenesis Diseases 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- DJOWTWWHMWQATC-KYHIUUMWSA-N Karpoxanthin Natural products CC(=C/C=C/C=C(C)/C=C/C=C(C)/C=C/C1(O)C(C)(C)CC(O)CC1(C)O)C=CC=C(/C)C=CC2=C(C)CC(O)CC2(C)C DJOWTWWHMWQATC-KYHIUUMWSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- 229930006000 Sucrose Natural products 0.000 description 1
- TVXBFESIOXBWNM-UHFFFAOYSA-N Xylitol Natural products OCCC(O)C(O)C(O)CCO TVXBFESIOXBWNM-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- RREGISFBPQOLTM-UHFFFAOYSA-N alumane;trihydrate Chemical compound O.O.O.[AlH3] RREGISFBPQOLTM-UHFFFAOYSA-N 0.000 description 1
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- 125000001664 diethylamino group Chemical group [H]C([H])([H])C([H])([H])N(*)C([H])([H])C([H])([H])[H] 0.000 description 1
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- HEBKCHPVOIAQTA-UHFFFAOYSA-N meso ribitol Natural products OCC(O)C(O)C(O)CO HEBKCHPVOIAQTA-UHFFFAOYSA-N 0.000 description 1
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Landscapes
- Polyurethanes Or Polyureas (AREA)
Abstract
The present invention relates to polyurethane heat insulation material technical field, more particularly relate to a kind of polyether glycol cellular insulant being applied to solar water heater water tank insulation.Lagging material of the present invention is obtained by component isocyanic ester and polyether glycol mixed foaming, also add the main raw materials such as dme, organic fire-retardant, glass fibre and pearlstone, this polyether glycol cellular insulant overcomes the large shortcoming of foaming post shrinkage, avoid water tank to be out of shape, rise and heave the stupefied phenomenon even ftractureed, and ensure that heat-insulating property and the flame retardant resistance of water-heater water tank.
Description
Technical field
The present invention relates to polyurethane heat insulation material technical field, more particularly relate to a kind of polyether glycol cellular insulant being applied to solar water heater water tank insulation.
Background technology
The continuous increase of and environmental protection pressure day by day in short supply along with the energy, countries in the world all start to try hard to recommend exploitation renewable energy source, wherein sun power is utilize and develop the renewable energy source the widest, development prospect is best, and be now widely used in all trades and professions, solar water heater industry is exactly one of them.China is richly stored with solar energy resources, and Solar use has a extensive future, and has been that first of solar water heater in the world uses state and producing country at present.
As everyone knows, concerning solar water heater, the selection of water tank heat preserving material is vital, and the lagging material that can be used as water tank at present mainly contains polyurethane foam, phenol formaldehyde foam, ultra-fine fibre etc.Polyurethane foam be by isocyanic ester to mix with polyether composition being poured in mould or water tank cavity foam obtained, wherein polyether composition contains polyether glycol, whipping agent, catalyzer, solidifying agent, fire retardant, stablizer etc., because polyurethane foam has the advantages such as moulding process is simple, thermal conductivity is low, it is the lagging material that water tank mainly adopts.
Polyurethane hard foam industry is in development process, and the selection of whipping agent is the focus of the sector one research.The early stage main whipping agent adopted is CFC-11(Trichloromonofluoromethane), but because of its CFC-11 havoc atmospheric ozone layer distributed, forbidden adopting by countries in the world.At present, apply more whipping agent to mainly contain: HCFC(Hydrochlorofluorocarbons), HFC(hydrogen fluorohydrocarbon), HC(alkane), CO
2or water.HCFC is because of its ODP(ozone depletion value) be less than CFC-11, be taken as the first-generation substitute products of CFC class whipping agent, temporarily use within excessive period, but it still have destructiveness to atmospheric ozone layer, now prohibited use by various countries gradually.The ODP value of HFC and HC class whipping agent is 0, alternative CFC class whipping agent, but it is inflammable, and production operation is inconvenient.Adopt CO
2whipping agent, or the CO utilizing isocyanic ester and water reaction to produce
2(Water blown) as whipping agent, have nontoxic, safe, there is not recycling problem and do not need the advantage of invest in the transformation of real estate foaming machine, be current a kind of more satisfactory whipping agent, such as document (Chinese invention patent; The patent No.: CN200910199487.X; Patent name: a kind of all-water combined polyether and using method, hard polyurethane foam composition; Applicant: Shanghai Dongda Polyurethane Co., Ltd) just disclose a kind of all-water combined polyether and the polyurethane hard foam utilizing Water blown to produce.
Polyurethane hard foam in process of production, because of the reason of each side such as itself characteristic, production technique and direct labor's operating skill, the problem of ubiquity foam contraction, foam and housing parts is easily caused to come off or all come off, finally cause casing deformation, vacuum mouth of pipe foam ftractures, and What is more, polyurethane hard foam transverse direction between inner bag and shell or longitudinal cracking, greatly reduce the heat insulation effect of water tank.Its contractile mechanism is mainly:
1, the formation of polyurethane hard foam need experience foaming process and two stages of maturing process.Expand from mixing of materials to lather volume and stop this process to be called foaming process, foaming process terminates until the reaction of foam system internal chemical terminates, and foams reach this process of final strength and are called maturing process.In foaming process, system releases a large amount of reaction heat, and reaction heat makes whipping agent vaporize and enters foams formation abscess and constantly expansion, and at this moment each abscess is subject to the effect of external pressure barometric point and interior Hair Fixer infusion bulging force.When pressure in abscess is greater than external pressure, the volume of foaming system just constantly expands; When external and internal pressure is equal, foams are reflation not.Lather volume expands and stops indicating the beginning of maturing process.In maturing process, foams no longer release reaction heat, and temperature slowly reduces (finally can be down to envrionment temperature), and at this moment abscess internal pressure also reduces, and produce inside and outside differential pressure.The formation of pressure reduction on foams produces certain impact: if the intensity of cell wall is enough to support pressure reduction, then obvious distortion can not occur foams; If cell wall intensity is more weak, then foams shrink under differential pressure action.This shrinkage phenomenon represents with " molding shrinkage " usually, generally below 1%, can reach 5% time serious, even larger.
2, current, solar water heater is adopt one or many cast free foaming to form, to be repeatedly cast for master with polyurethane hard foam foam process.Polyurethane hard foam in process of production, raw materials for production must at gelation time (when preparing macromolecular material, its reaction system viscosity increases with high molecular chainpropagation, when molecular chain starts to form network structure, viscosity can increase suddenly suddenly, this viscosity starts the rapid point increased and is called gelation point, the time that gelation point is corresponding is called gelation time) arrive before fill up foaming space (mould or water tank cavity in) completely, after gelation time, although lather volume still expands in continuation, but the foam formed, its feel is soft, abscess will obviously elongate, severe patient can in threadiness, its physical and mechanical properties is very poor, this area is referred to as " bad foam ".The foam pattern repeatedly poured into a mould is many because of processing step, needs the longer time to fill up completely, and this " bad foam " proportion is increased.Moreover the intersection foam that adjacent twice cast is formed, because of the difference of shrinking percentage, when catching a cold, easily cause foam to ftracture.
3, due to other reasonses such as production operation workman state of the art are low, production facility is poor, production technique is lack of standardization, cause the proportioning raw materials not operation lack of standardization such as science or incomplete mixing, have a strong impact on the use properties of polyurethane hard foam.
Therefore, many polyurethane hard foam manufacturers adopt to increase polyurethane hard foam insulation layer thickness or improve the modes such as filled and process density and solve, but thicken hard polyurethane foam foam layer and add water tank outer volume and material usage, cost is higher, and improve filled and process density and can increase product weight and thermal conductivity, more harm than good, be not desirable settling mode.
In addition, also there is the shortcoming without flame retardant resistance in current polyurethane hard foam, because the solar water heater had also installs electric heater, if circuit aging, short circuit can be caused to cause fire, and polyurethane hard foam holds incendive material just, can avoid holding incendive phenomenon so polyurethane hard foam have been made flame retardant resistance.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of solar water heater cellular insulant of improvement, this material is obtained by isocyanic ester and polyether composition mixed foaming, which overcome the shortcoming that foaming post shrinkage is large, avoid water tank to be out of shape, rise and heave the stupefied phenomenon even ftractureed, and ensure that the heat-insulating property of water-heater water tank and there is flame retardant resistance.
Technical scheme of the present invention is as follows:
Solar water heater water tank polyether glycol glycol foam organic fireproof thermal-insulation material, is obtained by isocyanic ester and polyether glycol composition mixed foaming, it is characterized in that: described polyether glycol composition comprises the raw material of following parts by weight:
Polyether glycol 70 ~ 90 parts;
Dme 3 ~ 6 parts;
Organic fire-retardant: 3-5 part;
3 ~ 6 parts, glass fibre;
Pearlstone 5 ~ 8 parts;
Described polyether composition and isocyanic ester are 1:1 ~ 1:1.4 in mass ratio;
Described polyether glycol molecular weight be 800 ~ 2000 propylene glycol polyethers, molecular weight be 400 ~ 4000 TriMethylolPropane(TMP) polyethers and molecular weight be the polytetrahydrofuran of 500 ~ 5000 terminal hydroxy group.
Described isocyanic ester is tolylene diisocyanate (TDI), diphenylmethanediisocyanate (MDI), polymethine polyphenyl polyisocyanate (PAPI) or aliphatics and aromatic organic isocyanate;
Described organic fire-retardant is methyl-phosphoric acid dimethyl ester (DMMP);
Described glass fibre be glass fiber precursor by obtain after chopped strand and milled fiber step diameter between 3 ~ 7 microns, the beta glass fibre of length between 2 ~ 4 millimeters.
Described pearlstone has the structure of hollow hole, and its particle diameter is between 10 ~ 100 nanometers.
The present invention's isocyanic ester used mainly contains tolylene diisocyanate (TDI), diphenylmethanediisocyanate (MDI), polymethine polyphenyl polyisocyanate (PAPI) etc. and does other aliphatics of special purpose and aromatic organic isocyanate on a small quantity.
Polyether glycol of the present invention is polyether glycol is that main chain contains ehter bond (-R-O-R-), and end group or side base contain the oligopolymer being greater than 2 hydroxyls (-OH).Be with low molecular weight polyols, polyamine or containing the compound of reactive hydrogen for initiator ,-form with olefin oxide ring-opening polymerization under catalyst action.Olefin oxide is propylene oxide (propylene oxide) mainly, ethylene oxide (oxyethane), wherein important with propylene oxide.The polyvalent alcohols such as the trivalent alcohols such as polyvalent alcohol initiator has the dibasic alcohol such as propylene glycol, ethylene glycol, glycerine TriMethylolPropane(TMP) and season penta, tetrol, Xylitol, sorbyl alcohol, sucrose; Amine initiator is diethylamine, diethylenetriamine, also can be tetrahydrofuran (THF) etc.
Dme (DME) is a kind of colourless gas or compressed liquid at normal temperatures and pressures, has inertia, non-corrosiveness, non-carcinogenesis, also has excellent compatibility, soluble in water, can with most of polarity and non-polar organic solvent miscible; Boiling point is low, inflammable, but can obtain the characteristic of high boiling point and incombustible after mixing with water; Stable chemical nature, can standing storage and do not decompose or transform, and the life-span in atmospheric layer is very short, about about 10 days, can be degraded to carbonic acid gas and water, and ODP value is 0, thus can not cause environmental pollution and damage the ozone layer.During owing to using water as in prior art as whipping agent, there is the low defect of foamy body in polyurethane hard foam, Some Enterprises solves the problems referred to above by the consumption or raising foam density improving isocyanate material, and this will cause production cost to raise, and hinders the popularization of full water foamed technology.The characteristic that dme can dissolve each other with water makes it be easy to in full water foamed technology, contributes to improving that full water foamed polyurethane hard foam intensity is low, the defect of poor stability, heat insulating ability difference, and can reduce isocyanic ester consumption; In addition, due to low viscosity and the characteristic of low surface tension of dme, for can significantly reduce system viscosity in full water foamed system, and improve each component mixing property in system, shaping foaming thermal-insulating hole bubble is evenly distributed, and heat-insulating property is stablized; The mutual solubility of dme and polyether glycol is conducive to the bubbling efficiency and the dimensional stability that improve polyurethane hard foam simultaneously; Add that dme price is low, wide advantage of originating, it can be used for the production of various polyurethane hard foam as frothing aid, and effectively can improve the use properties of polyurethane hard foam.
Glass fibre is a kind of ceramic of excellent performance, the advantage that it has good insulating, thermotolerance is strong, erosion resistance good, physical strength is high.It is with glass sphere or discarded glass for raw material becomes through high temperature melting, wire drawing, doff, the manufacture technics such as to weave cotton cloth, and be typically used as the strongthener in matrix material, its diameter is less, and intensity is higher.The glass fibre that the present invention adopts be glass fiber precursor by obtain after chopped strand and milled fiber step diameter between 3 ~ 7 microns, the beta glass fibre of length between 2 ~ 4 millimeters.After foaming raw material mixing, glass fibre can be distributed in the skeleton of cell wall, foam materials, plays the effect strengthening hole wall and foam stiffness, and can not affect foam structure.
Pearlstone is that one has high performance inorganic light weight thermal insulation material, density little (70 ~ 250kg/m3), use temperature scope Wei – 200 ~ 800 DEG C, the thermal conductivity of temperature within the scope of 0 ~ 100 DEG C is 0.024 ~ 0.058w/(mk), have thermal conductivity low, nontoxic, tasteless, be stale-proof, the advantage of fire-retardant, sound-absorbing, can be used as high-efficiency insulated, cold insulation packing material.Its producing principle is that perlite ore forms the ore in sand form of certain particle size through fragmentation, a kind of inside of making after preheating, TRANSIENT HIGH TEMPERATURE calcining expansion is again the material of the white granular of polynuclear plane, is divided into open bore, closed pore, hollow hole three kinds of forms according to its expansion process technology and purposes difference.What the present invention adopted is the hollow hole pearlstone of particle diameter (particle diameter) below 100 nanometers, and record in test, pearlstone can be suitable the percentage of open area of increase polyurethane hard foam, and foamable gel and curing speed can be delayed, prevent foam from greatly and easily extruding inner bag and outer wall because of short period of time inner accumulated strength, reduce the generation of " bad foam ", reduce simultaneously foam-formed after shrinking percentage.
Dimethyl methyl phosphonate (DMMP) is a kind of organophosphorous fire retardant, has that addition is less, excellent flame retardancy, an advantage such as easy to use; Be widely used in the fire prevention of macromolecular material, fire-retardant on.Use range and method this product are widely used in the macromolecular materials such as urethane foam, unsaturated polyester resin, epoxy resin, and the self-extinguishing of its goods, lower temperature resistance, plasticity-, UV stable and static resistance are all better than the goods adding other fire retardant.1, the application hard polyurethane foams in hard polyurethane foams Sandwich board, perfusion, spray mo(u)lding is as energy-saving heat preserving impregnating material, be widely used in the insulation cold insulation energy-saving material of the industries such as oil, chemical industry, freezer, building, the DMMP using experiment to show to add 2%-15% can reach the different flame retardant rating required.Be applied on flexible PU foam and soft bubble matrix material and also can obtain gratifying flame retardant effect.2, being applied to unsaturated polyester resin DMMP is applied in unsaturated polyester resin, has good consistency, excellent flame retardant resistance, can be made into flame retardant glass fiber reinforced plastic and transparent fireproofing glass_steel goods.DMMP and aluminum trihydrate synergistic are added in goods, can reduce production cost, can obtain again the quality products of low toxicity, low cigarette, high flame resistance.DMMP fire retardant is added in epoxy resin, furane resin and plays good flame retardant effect.
Above-described polyurethane hard foam lagging material also may be used for freezer, cinema as solar water heater water tank lagging material or needs fp divider wall.
The mechanism of action that the present invention effectively can solve prior art deficiency is:
Isocyanic ester and the later performance of polyether glycol composition mixed foaming are described with main raw parameters such as thermal conductivity, density, closed pore and percentage of open area, abscess features.The thermal conductivity of the foam materials of isocyanic ester and polyether glycol composition mixed foaming is all lower than other lagging materials, and therefore from heat-proof quality, the foam materials of isocyanic ester and polyether glycol composition mixed foaming is optimal lagging material.Density is an important parameter of foam materials, the thermal conductivity of the foam materials of isocyanic ester and polyether glycol composition mixed foaming can raise with the increase of its density, and solar water heater is non-bearing equipment, and mainly play insulation effect, therefore density domination is in optimum value, is generally 35kg/m
3left and right.The hole bubble of the foam of isocyanic ester and polyether glycol composition mixed foaming have closed pore and perforate point, rate of closed hole is higher, and its heat-insulating property is better, and percentage of open area is higher, and its foam-formed post-shrinkage ratio is lower.Abscess feature comprises the features such as cell diameter, abscess length, foam structure and distribution of cells, and these features all affect the heat-insulating property of foam materials.
Because natural all things on earth all has the characteristic of expanding with heat and contract with cold, the foam contraction of solar water heater is ubiquitous problem, namely molding shrinkage can not be zero, this area is referred to as " normal contraction ", but molding shrinkage controls within 1% by the foam process that the production formula by adjusting foaming raw material is aided with science again, even can ignore." the bad foam " that cause because of factors such as technique, composition of raw materials, operations or macrofiber shape abscess then can have a strong impact on the performance of foam, make foam contraction rate improve and reduce heat-insulating property.Increase polyurethane hard foam insulation layer thickness as stated in the Background Art or raising filled and process density are not desirable settling mode.Also have part producer by adding pore-creating agent in foaming raw material simultaneously, thus reduce foam-formed shrinking percentage, but the foam thermal insulation performance formed reduces greatly.
The present invention adds raw material dme, glass fibre, hollow hole pearlstone on the basis of isocyanic ester and polyether glycol composition mixed foaming, spherical or the oval spherical and fine and closely woven abscess that is evenly distributed of formation of foam can be made, foam material heat-insulating property is stablized, and increase the intensity of cell wall, because of the Material compression phenomenon of inside and outside differential pressure appearance when reducing foam-formed, increase the percentage of open area of foam simultaneously suitably, reduce foam-formed after shrinking percentage.
Compared with prior art, the cellular insulant of isocyanic ester of the present invention and polyether glycol composition mixed foaming is except possessing conventional polyurethanes foam materials high heat preservation performance, also reduce the foam contraction problem because each side reasons such as itself characteristic, production technique and direct labor's operating skill cause, avoid water tank to be out of shape, rise and heave the stupefied phenomenon even ftractureed.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to the scope that embodiment represents.
embodiment 1
Solar water heater water tank polyether glycol foam organic fire prevention thermal insulation layer is obtained by isocyanic ester and polyether glycol composition mixed foaming, and the formula of material is as follows:
Molecular weight is the propylene glycol polyethers 70 parts of 800 ~ 2000; Dme 3 parts; Organic fire-retardant methyl-phosphoric acid dimethyl ester 4 parts; 3 parts, glass fibre (diameter between 3 ~ 7 microns, the beta glass fibre of length between 2 ~ 4 millimeters); Pearlstone (particle diameter is in 10 ~ 100 nanometers) 5 parts;
Above-claimed cpd is mixed formation polyether composition, then with component isocyanic ester in mass ratio 1:1.4 mixing be poured in solar water heater water tank cavity and foam, polyether glycol foam organic fire prevention thermal insulation layer of the present invention can be obtained after hot setting.
embodiment 2
Solar water heater water tank polyether glycol foam organic fire prevention thermal insulation layer is obtained by isocyanic ester and polyether glycol composition mixed foaming, and the formula of material is as follows:
Molecular weight is the polytetrahydrofuran 75 parts of 500 ~ 5000 terminal hydroxy group; Dme 4 parts; Organic fire-retardant methyl-phosphoric acid dimethyl ester 5 parts; 4 parts, glass fibre (diameter between 3 ~ 7 microns, the beta glass fibre of length between 2 ~ 4 millimeters); Pearlstone (particle diameter is in 10 ~ 100 nanometers) 6 parts;
Above-claimed cpd is mixed formation polyether composition, then with tolylene diisocyanate (TDI) in mass ratio 1:1.4 mix to be poured in solar water heater water tank cavity and foam, polyether glycol foam organic fire prevention thermal insulation layer of the present invention can be obtained after hot setting.
embodiment 3
Solar water heater water tank polyether glycol foam organic fire prevention thermal insulation layer is obtained by isocyanic ester and polyether glycol composition mixed foaming, and the formula of material is as follows:
Molecular weight is the TriMethylolPropane(TMP) polyethers 80 parts of 400 ~ 4000; Dme 5 parts; Organic fire-retardant methyl-phosphoric acid dimethyl ester 6 parts; 5 parts, glass fibre (diameter between 3 ~ 7 microns, the beta glass fibre of length between 2 ~ 4 millimeters); Pearlstone (particle diameter is in 10 ~ 100 nanometers) 7 parts;
Above-claimed cpd is mixed formation polyether composition, then with diphenylmethanediisocyanate (MDI) in mass ratio 1:1.4 mix to be poured in solar water heater water tank cavity and foam, polyether glycol foam organic fire prevention thermal insulation layer of the present invention can be obtained after hot setting.
embodiment 4
Molecular weight is the propylene glycol polyethers 85 parts of 800 ~ 2000; Dme 6 parts; Organic fire-retardant methyl-phosphoric acid dimethyl ester 8 parts; 5 parts, glass fibre (diameter between 3 ~ 7 microns, the beta glass fibre of length between 2 ~ 4 millimeters); Pearlstone (particle diameter is in 10 ~ 100 nanometers) 8 parts;
Above-claimed cpd is mixed formation polyether composition, then with diphenylmethanediisocyanate (MDI) in mass ratio 1:1.4 mix to be poured in solar water heater water tank cavity and foam, polyether glycol foam organic fire prevention thermal insulation layer of the present invention can be obtained after hot setting.
embodiment 5
Solar water heater water tank polyether glycol foam organic fire prevention thermal insulation layer is obtained by isocyanic ester and polyether glycol composition mixed foaming, and the formula of material is as follows:
Molecular weight is the TriMethylolPropane(TMP) polyethers 90 parts of 400 ~ 4000; Dme 6 parts; Organic fire-retardant methyl-phosphoric acid dimethyl ester 10 parts; 6 parts, glass fibre (diameter between 3 ~ 7 microns, the beta glass fibre of length between 2 ~ 4 millimeters); Pearlstone (particle diameter is in 10 ~ 100 nanometers) 6 parts;
Above-claimed cpd is mixed formation polyether composition, then with tolylene diisocyanate (TDI) in mass ratio 1:1.4 mix to be poured in solar water heater water tank cavity and foam, polyether glycol foam organic fire prevention thermal insulation layer of the present invention can be obtained after hot setting.
application test
For more fully setting forth beneficial effect of the present invention, the applicant has manufactured 2 solar water heaters, and carry out a testing experiment, wherein a solar water heater water tank adopts the polyurethane foam raw material of company of the Zhejiang Province production that market is bought as lagging material (control group), and another adopts polyether glycol glycol foam organic fireproof thermal-insulation material (experimental group) of the present invention.Under cloudy weather (temperature 18-25 DEG C) condition, the highest water temperature of control group reaches 70 DEG C, and the highest water temperature of experimental group reaches 80 DEG C, and this illustrates that polyether glycol foam organic fire prevention thermal insulation layer heat insulation effect of the present invention is better.
Take out the moulded foam of control group and experimental group respectively and detect its performance perameter, performance index are as following table:
| Test item | Control group | Experimental group |
| Density (kg/m 3） | 35 | 35 |
| Rate of closed hole (%) | ≥95 | ≥92 |
| Water-intake rate (%) | 1.5 | 1.0 |
| Thermal conductivity (W/mk) | ≤0.025 | ≤0.022 |
| Compressive strength (kPa) | ≥150 | ≥200 |
| Dimensional stability (100 DEG C, 24h) | ≤0.6 | ≤0.4 |
| Dimensional stability (-25 DEG C, 24h) | ≤0.4 | ≤0.2 |
| Molding shrinkage (%) | ≤1.1 | ≤0.3 |
From table, the index such as compressive strength, molding shrinkage, dimensional stability of polyether glycol foam organic fire prevention thermal insulation layer of the present invention all has than existing lagging material and improves significantly, the phenomenon such as ungauged regions, distortion, expansion, cracking under freezing or hot conditions is a kind of lagging material of excellent performance.
Claims (1)
1. a solar water heater water tank polyether glycol glycol foam organic fireproof thermal-insulation material, is obtained by isocyanic ester and polyether glycol composition mixed foaming, it is characterized in that: described polyether glycol composition is made up of the raw material of following parts by weight:
Polyether glycol 70 ~ 90 parts;
Dme 3 ~ 6 parts;
3 ~ 6 parts, glass fibre;
Pearlstone 5 ~ 8 parts;
Organic fire-retardant: 6-10 part;
Described organic fire-retardant is methyl-phosphoric acid dimethyl ester;
Described polyether composition and isocyanic ester are 1:1 ~ 1:1.4 in mass ratio;
Described polyether glycol be selected from molecular weight be 800 ~ 2000 propylene glycol polyethers, molecular weight be 400 ~ 4000 TriMethylolPropane(TMP) polyethers and molecular weight be the polytetrahydrofuran of 500 ~ 5000 terminal hydroxy group;
Described isocyanic ester is selected from tolylene diisocyanate (TDI), diphenylmethanediisocyanate (MDI), polymethine polyphenyl polyisocyanate (PAPI);
Described glass fibre be glass fiber precursor by obtain after chopped strand and milled fiber step diameter between 3 ~ 7 microns, the beta glass fibre of length between 2 ~ 4 millimeters;
Described pearlstone has the structure of hollow hole, and its particle diameter is between 10 ~ 100 nanometers.
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| CN103772637B (en) * | 2013-12-31 | 2016-08-17 | 广西宾阳县荣良新材料科技有限公司 | A kind of solar water heater water tank insulation material |
| CN106221180A (en) * | 2016-07-25 | 2016-12-14 | 广西南宁智翠科技咨询有限公司 | A kind of novel solar water heater water tank environment-friendly insulating material |
| CN106280399A (en) * | 2016-09-14 | 2017-01-04 | 广西南宁荣威德新能源科技有限公司 | A kind of new type solar energy insulation material |
| CN106221188A (en) * | 2016-09-14 | 2016-12-14 | 广西南宁荣威德新能源科技有限公司 | A kind of new type solar energy high-performance insulation material |
| CN106280400A (en) * | 2016-09-14 | 2017-01-04 | 广西南宁荣威德新能源科技有限公司 | A kind of novel environment friendly solar energy thermal insulation material |
| CN107778518A (en) * | 2017-11-21 | 2018-03-09 | 广西吉宽太阳能设备有限公司 | A kind of insulation material of solar water heater water tank and preparation method thereof |
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| CN1294140A (en) * | 1999-11-01 | 2001-05-09 | 深圳彩虹气雾剂制造有限公司 | Single-component foam polyurethane material and its preparing process |
| CN102338263A (en) * | 2010-07-20 | 2012-02-01 | 益科博能源科技（上海）有限公司 | Vacuum thermal insulation system |
| CN102516494A (en) * | 2011-12-15 | 2012-06-27 | 广西吉宽太阳能设备有限公司 | Foaming composition for water tank of solar water heater |
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| RU2510798C2 (en) * | 2009-07-10 | 2014-04-10 | Басф Се | Method of obtaining polyols basing on renewable initial raw material |
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| CN1294140A (en) * | 1999-11-01 | 2001-05-09 | 深圳彩虹气雾剂制造有限公司 | Single-component foam polyurethane material and its preparing process |
| CN102338263A (en) * | 2010-07-20 | 2012-02-01 | 益科博能源科技（上海）有限公司 | Vacuum thermal insulation system |
| CN102516494A (en) * | 2011-12-15 | 2012-06-27 | 广西吉宽太阳能设备有限公司 | Foaming composition for water tank of solar water heater |
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