CN103319679B - Polyurethane rigid foam inorganic fireproof thermal-insulation material for solar water tank - Google Patents
Polyurethane rigid foam inorganic fireproof thermal-insulation material for solar water tank Download PDFInfo
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Abstract
The invention provides a polyurethane rigid foam inorganic fireproof thermal-insulation material for a solar water tank. The material is prepared by mixing and foaming of isocyanate and a polyether composition, wherein the polyether composition contains main raw materials consisting of water-soluble polyether, dimethyl ether, amino-polyether modified polysiloxane, magnesium hydroxide, a glass fiber, expanded perlite and the like. The polyurethane rigid foam inorganic fireproof thermal-insulation material overcomes the disadvantage of great shrinkage after foam forming, prevents the water tank from deformation, bulking, barring and even cracking, has a fireproof effect and guarantees thermal insulation performance of the water tank of a water heater.
Description
Technical field
The present invention relates to solar water heater water tank lagging material, relate to the special polyurethanes foam that adopts as the lagging material of solar water heater water tank.
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.: CN 200910199487.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.
Foam contraction is there is in the present inventor in order to overcome existing polyurethane hard foam, foam and housing parts is easily caused to come off or all come off, the bad problem of heat insulation effect of vacuum mouth of pipe foam cracking water tank, invent the patent of " solar water heater water tank foaming composition ", application number 20lll0418919.9, application publication number CN l02516494A, applicant: Guangxi Jikuan Solar Energy Equipment Co., Ltd.: address: the dynamo-electric A252 room, 2nd floors, city of No. 47-5, main road, Anji, Guangxi Zhuang Autonomous Region Nanning City water health five metals, the clear key of invention forces, Xie Gang, Yang Minghui, this foaming composition can reduce poly-ammonia junket material, and from inhalator jar, spray shaping post shrinkage larger, affect water-heater water tank heat insulation effect, avoid water tank to be out of shape and rise heaving the stupefied phenomenon even ftractureed.
But also there is the shortcoming without flame retardant resistance in polyurethane hard foam at present, 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 present invention is on the basis of patent application 20lll0418919.9, provide a kind of solar water heater polyurethane hard foam lagging material of improvement, this material overcomes the large shortcoming of foaming post shrinkage, avoid water tank to be out of shape, rise and heave the stupefied phenomenon even ftractureed, there is flame retardant resistance, and ensure that the heat-insulating property of water-heater water tank.
The present invention is achieved by the following technical solutions:
Solar water container polyurethane hard foam inorganic fireproofing insulation material, by polyether composition and isocyanic ester by weight being 1:1 ~ 1:1.4 mixed foaming and obtaining, is characterized in that: described polyether composition comprises the component of following parts by weight:
Water soluble polyether 70 ~ 90 parts;
Dme 3 ~ 6 parts;
Amino-polyether modified polysiloxane 3 ~ 5 parts;
3 ~ 6 parts, glass fibre;
Magnesium hydroxide 3-5 part;
Pearlstone 5 ~ 8 parts;
Described water soluble polyether is that the main raw material of following parts by weight is mixed:
Glycerin polyether resin 5 ~ 7 parts, glycol ether resin 3 ~ 5 parts, suds-stabilizing agent water-soluble silicon oil 0.2 ~ 0.3 part, catalyst n, N-dimethyl cyclohexyl amine 0.2 ~ 0.4 part, solidifying agent dibutyl tin laurate 0.1 ~ 0.3 part, 0.2 ~ 0.4 part, deionized water water.
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.
Above-described water soluble polyether is different from the combined polyether product of current domestic production, and water soluble polyether thermal conductivity of the present invention is all lower than other lagging materials, thus good heat insulating.
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, also can as fire-retardant material.
Magnesium hydroxide (Mg(OH)
2) when being heated (340-490 degree) occur decompose absorb combustionmaterial surface heat to fire retardation; Discharge the oxygen on large quantity of moisture dilution combustion thing surface simultaneously, decompose the activated magnesia generated and be attached to the carrying out that combustiblematerials surface prevents again burning further.Magnesium hydroxide not only produces without any objectionable impurities in whole fire-retardant process, and its product decomposed can also absorb the polymer such as rubber, plastics while fire-retardant in a large number and to burn the obnoxious flavour and smog that produce, activated magnesia constantly absorbs imperfect combustion fusing residue, eliminating smog while stopping very soon from making burning, stoping molten drop, is a kind of emerging environmental protection inorganic fire retardant.
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.Pearlstone of the present invention has the structure of hollow hole, and its particle diameter, also can as fire-retardant material between 10 ~ 100 nanometers.
Amino-polyether modified polysiloxane is the polymkeric substance that a kind of amido can be combined with water, and water-soluble performance is good, forms the film of good bonding strength after dry, makes polyurethane hard foam stablize, is not easy to vanish, increase heat-insulating property after mixed foaming.
The preparation process of amino-polyether modified polysiloxane is as follows:
(1) epoxidized polyether modified polyorganosiloxane is first prepared
Toluene solvant in epoxidized polyether, weight ratio is 10:3-5; The catalyzer isopropyl alcohol solution of chloroplatinic acid of instillation 5-8%, stirs, nitrogen protection, controlling temperature of reaction is 80 DEG C, 100 weight part reactants drip the containing hydrogen silicone oil of 5-10 weight parts, stirring reaction 8 h, and reaction terminates to carry out underpressure distillation to solution and obtain epoxidized polyether modified polyorganosiloxane afterwards;
(2) amino-polyether modified polysiloxane is prepared
A certain amount of acetone, Virahol is added as stablizer in the flask that epoxidized polyether modified polyorganosiloxane is housed; add quantitative diethylamine (reaction raw materials amount of substance is than being 1.2:1.0) again. heating in water bath under nitrogen protection; control temperature of reaction at 80 DEG C; after stirring reaction 7 h. reaction terminates, gained solution is carried out underpressure distillation removing low-boiling-point substance, obtain the amino-polyether modified polysiloxane of pale yellow oil product.
Above-described polyurethane hard foam inorganic fireproofing insulation material is except as except the lagging material of solar water heater water tank, can also as the heat insulating work of freezer, heat insulation, waterproof, the FPE of various gas, liquid, oily transport pipe, the various application needing sound insulation, heat insulation device place lagging material such as subway, Library, office building, theatre, movie theatre.
The mechanism of action that the present invention effectively can solve prior art deficiency is:
The performance of polyurethane hard foam material is described with main raw parameters such as thermal conductivity, density, closed pore and percentage of open area, abscess features.The thermal conductivity of polyurethane foamed material is all lower than other lagging materials, and therefore from heat-proof quality, polyurethane foamed material is optimal lagging material.Density is an important parameter of polyurethane foamed material, the thermal conductivity of polyurethane foamed material can raise with the increase of its density, and solar water heater is non-bearing equipment, and polyurethane foam mainly plays insulation effect, therefore density domination is in optimum value, is generally 35kg/m
3left and right.The hole bubble of hard polyurethane foam 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 polyurethane foamed material.
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 on the basis of foaming component water soluble polyether, amino-polyether modified polysiloxane, magnesium hydroxide, glass fibre, hollow hole pearlstone, surfactivity good dope can be formed when just having started mixing, after spraying with isocyanic ester, 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, suitably increase the percentage of open area of foam simultaneously, reduce foam-formed after shrinking percentage.Can also fire-proof function be increased, once solar water heater runs into fire, magnesium hydroxide (Mg(OH)
2) when being heated (340-490 degree) occur decompose absorb combustionmaterial surface heat to fire retardation; Discharge the oxygen on large quantity of moisture dilution combustion thing surface simultaneously, decompose the activated magnesia generated and be attached to the carrying out that combustiblematerials surface prevents again burning further.This material non-toxic, odorlessness, its oxygen index is 100, and fire resistance period can reach about 3 hours.
Compared with prior art, polyurethane hard foam lagging material of the present invention 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, also there is good fire retardation.
Solar water container polyurethane hard foam inorganic fireproofing insulation material of the present invention can as the application of the heat-insulating heat-preserving material in refrigerator, freezer, Library, cinema, electrical equipment room, even if Library, cinema, electrical equipment room are just in case on fire, lagging material also can stop spreading of the intensity of a fire.
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.
First prepare amino-polyether modified polysiloxane, preparation process is as follows:
(1) epoxidized polyether modified polyorganosiloxane is first prepared
The toluene solvant of 50 liters is added in the epoxidized polyether of 100 liters, instill 2 liters of catalyzer isopropyl alcohol solution of chloroplatinic acid, stir, nitrogen protection, controlling temperature of reaction is 80 DEG C. drip the containing hydrogen silicone oil of 15 liters, stirring reaction 8 h, reaction terminates to carry out underpressure distillation to solution and obtain epoxidized polyether modified polyorganosiloxane afterwards;
(2) amino-polyether modified polysiloxane is prepared
The acetone of weight content 5% or Virahol is added as stablizer in the flask that epoxidized polyether modified polyorganosiloxane is housed; add quantitative diethylamine (reaction raw materials amount of substance is than being 1.2:1.0) again. heating in water bath under nitrogen protection; control temperature of reaction at 80 DEG C; after stirring reaction 7 h. reaction terminates, gained solution is carried out underpressure distillation removing low-boiling-point substance, obtain the amino-polyether modified polysiloxane of pale yellow oil product.This amino-polyether modified polysiloxane is used for the solar water container polyurethane hard foam inorganic fireproofing insulation material of each embodiment following.
embodiment 1
5 parts of glycerin polyether resins are taken by mass fraction, 5 parts of glycol ether resins, 0.2 part of suds-stabilizing agent water-soluble silicon oil, 0.2 part of catalyst n, N-dimethylcyclohexylamine, 0.3 part of solidifying agent dibutyl tin laurate, 0.2 part of water, raw material all-water combined polyether is formed after mixing, then 3 kilograms of dme are added according to 80 kilograms of water soluble polyethers, 2 kilograms of amino-polyether modified polysiloxane, 2 kilograms of magnesium hydroxides, 4 kilograms of glass fibre and 7 kilograms of centre hole pearlstones, mix formation polyether composition, then with component isocyanic ester in mass ratio 1:1.4 mixing jetting foam in solar water heater water tank cavity, solar water container polyurethane hard foam inorganic fireproofing insulation material of the present invention can be obtained after overcuring.
embodiment 2
6 parts of glycerin polyether resins are taken by mass fraction, 4 parts of glycol ether resins, 0.3 part of suds-stabilizing agent water-soluble silicon oil, 0.3 part of catalyst n, N-dimethylcyclohexylamine, 0.2 part of solidifying agent dibutyl tin laurate, 0.3 part of water, raw material all-water combined polyether is formed after mixing, then 4 kilograms of dme are added according to 80 kg of water dissolubilities, 2 kilograms of amino-polyether modified polysiloxane, 3 kilograms of magnesium hydroxides, 3 kilograms of glass fibre and centre hole pearlstone 8 kilograms, mix formation polyether composition, then with component isocyanic ester in mass ratio 1:1.3 mixing jetting foam in solar water heater water tank cavity, solar water container polyurethane hard foam inorganic fireproofing insulation material of the present invention can be obtained after hot setting.
embodiment 3
7 parts of glycerin polyether resins are taken by mass fraction, 3 parts of glycol ether resins, 0.2 part of suds-stabilizing agent water-soluble silicon oil, 0.4 part of catalyst n, N-dimethylcyclohexylamine, 0.1 part of solidifying agent dibutyl tin laurate, 0.3 part of water, raw material all-water combined polyether is formed after mixing, then 5 kilograms of dme are added according to 80 kilograms of water soluble polyethers, 3 kilograms of amino-polyether modified polysiloxane, 4 kilograms of magnesium hydroxides, 6 kilograms of glass fibre and 5 kilograms of centre hole pearlstones, mix formation polyether composition, then with component isocyanic ester in mass ratio 1:1.2 mixing jetting foam in solar water heater water tank cavity, solar water container polyurethane hard foam inorganic fireproofing insulation material of the present invention can be obtained after hot setting.
embodiment 4
7 parts of glycerin polyether resins are taken by mass fraction, 3 parts of glycol ether resins, 0.2 part of suds-stabilizing agent water-soluble silicon oil, 0.3 part of catalyst n, N-dimethylcyclohexylamine, 0.1 part of solidifying agent dibutyl tin laurate, 0.4 part of water, raw material all-water combined polyether is formed after mixing, then 6 kilograms of dme are added according to 80 kilograms of water soluble polyethers, 4 kilograms of amino-polyether modified polysiloxane, 5 kilograms of magnesium hydroxides, 5 kilograms of glass fibre and 6 kilograms of centre hole pearlstones, mix formation polyether composition, then with component isocyanic ester in mass ratio 1:1.1 mixing jetting foam in solar water heater water tank cavity, solar water container polyurethane hard foam inorganic fireproofing insulation material of the present invention can be obtained after hot setting.
embodiment 5
7 parts of glycerin polyether resins are taken by mass fraction, 3 parts of glycol ether resins, 0.3 part of suds-stabilizing agent water-soluble silicon oil, 0.2 part of catalyst n, N-dimethylcyclohexylamine, 0.1 part of solidifying agent dibutyl tin laurate, 0.3 part of water, raw material all-water combined polyether is formed after mixing, then 6 kilograms of dme are added according to 80 kilograms of water soluble polyethers, 5 kilograms of amino-polyether modified polysiloxane, 2 kilograms of magnesium hydroxides, 5 kilograms of glass fibre and 6 kilograms of centre hole pearlstones, mix formation polyether composition, then with component isocyanic ester in mass ratio 1:1 mixing be poured in solar water heater water tank cavity and foam, solar water container polyurethane hard foam inorganic fireproofing insulation material 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 solar water container polyurethane hard foam inorganic fireproofing 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 solar water container polyurethane hard foam inorganic fireproofing insulation material 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 polyurethane hard foam inorganic fireproofing insulation material 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.
The example application of ammonia ester rigid foam inorganic fireproofing insulation material of the present invention in fire prevention:
Will by water soluble polyether, dme, amino-polyether modified polysiloxane, glass fibre, the polyether composition that magnesium hydroxide and pearlstone are made and isocyanic ester are by weight being 1:1 ~ 1:1.4 mixed foaming thing, with existing polyurethane hard foam (black material+expect in vain), the equipment of power Zhenjiang urethane Machinery Co., Ltd. difficult to understand is adopted to carry out spraying the foamed board obtained, the present invention and contrast, burn 10 minutes under the flame of natural liquid gases cooking stove, the existing polyurethane hard foam catching fire of result, and solar water container polyurethane hard foam inorganic fireproofing insulation material of the present invention is not on fire.
Claims (3)
1. a solar water container polyurethane hard foam inorganic fireproofing insulation material, by polyether composition and isocyanic ester by weight being 1:1 ~ 1:1.4 mixed foaming and obtaining, is characterized in that: described polyether composition is made up of the raw material of following parts by weight:
Water soluble polyether 70 ~ 90 parts;
Dme 3 ~ 6 parts;
Amino-polyether modified polysiloxane 3 ~ 5 parts;
Magnesium hydroxide 3 ~ 5 parts;
3 ~ 6 parts, glass fibre;
Pearlstone 5 ~ 8 parts;
Described water soluble polyether is that the main raw material of following parts by weight is mixed:
Glycerin polyether resin 5 ~ 7 parts, glycol ether resin 3 ~ 5 parts, suds-stabilizing agent water-soluble silicon oil 0.2 ~ 0.3 part, catalyst n, N-dimethyl cyclohexyl amine 0.2 ~ 0.4 part, solidifying agent dibutyl tin laurate 0.1 ~ 0.3 part, deionized water 0.2 ~ 0.4 part;
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 l0 ~ l00 nanometer.
2. the solar water container polyurethane hard foam inorganic fireproofing insulation material according to claim l, is characterized in that: the preparation process of described amino-polyether modified polysiloxane is as follows:
(1) epoxidized polyether modified polyorganosiloxane is first prepared
Toluene solvant in epoxidized polyether, epoxidized polyether: volume of toluene is than being 10:3 ~ 5; The catalyzer isopropyl alcohol solution of chloroplatinic acid of instillation 5 ~ 8%, stirs, nitrogen protection, controlling temperature of reaction is 80 DEG C, l00 parts by volume reactant drips the containing hydrogen silicone oil of 5 ~ l0 parts by volume, stirring reaction 8h, and reaction terminates to carry out underpressure distillation to solution and obtain epoxidized polyether modified polyorganosiloxane afterwards;
(2) amino-polyether modified polysiloxane is prepared
A certain amount of acetone, Virahol is added as stablizer in the flask that epoxidized polyether modified polyorganosiloxane is housed; add quantitative diethylamine again; the weight ratio of reaction raw materials material is 1.2:1.0; heating in water bath under nitrogen protection; control temperature of reaction at 80 DEG C; stirring reaction 7h, carries out underpressure distillation removing low-boiling-point substance, obtains the amino-polyether modified polysiloxane of pale yellow oil product by gained solution after reaction terminates.
3.
solar water container polyurethane hard foam inorganic fireproofing insulation material according to claim l is as the application of the heat-insulating heat-preserving material in refrigerator, freezer, Library, cinema or electrical equipment room.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310294728.5A CN103319679B (en) | 2013-07-15 | 2013-07-15 | Polyurethane rigid foam inorganic fireproof thermal-insulation material for solar water tank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310294728.5A CN103319679B (en) | 2013-07-15 | 2013-07-15 | Polyurethane rigid foam inorganic fireproof thermal-insulation material for solar water tank |
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| Publication Number | Publication Date |
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| CN103319679A CN103319679A (en) | 2013-09-25 |
| CN103319679B true CN103319679B (en) | 2015-06-10 |
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| CN107501909A (en) * | 2017-09-26 | 2017-12-22 | 广西吉宽太阳能设备有限公司 | A kind of solar water container polyurethane inorganic fire-retardant heat-insulation material |
| CN107501908A (en) * | 2017-09-26 | 2017-12-22 | 广西吉顺能源科技有限公司 | A kind of polyurethane hard foam water tank heat preserving material |
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| CN102516494B (en) * | 2011-12-15 | 2013-09-11 | 广西吉宽太阳能设备有限公司 | Foaming composition for water tank of solar water heater |
| CN102633974B (en) * | 2012-04-17 | 2013-10-09 | 中南民族大学 | High-flame-retardance temperature preservation plate and preparation method thereof |
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Inventor after: Wei Yonghao Inventor after: Zhang Zexin Inventor after: Wu Tianyu Inventor before: Ma Zhaojian Inventor before: Li Zhengliang Inventor before: Meng Husheng Inventor before: Ma Qing Inventor before: Lai Guangye Inventor before: Huang Qiuhe Inventor before: Lai Lin Inventor before: Lu Junxing Inventor before: Zhou Fan Inventor before: Xie Gang Inventor before: Lin Chenggang Inventor before: Yang Minghui |
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Effective date of registration: 20160606 Address after: 510555, Fenghuang three, 13, Kowloon Industrial Park, Jiulong Town, Guangzhou, Guangdong, Luogang District Patentee after: GUANGZHOU JOYKO POLYURETHANES CO., LTD. Address before: 530001 the Guangxi Zhuang Autonomous Region, Nanning, Anji Avenue, No. 47 - water Kang Hardware Electrical City, room, building 2, room A252 Patentee before: Guangxi Jikuang Solar Energy Equipment Co., Ltd. |
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Denomination of invention: Polyurethane rigid foam inorganic fireproof thermal-insulation material for solar water tank Effective date of registration: 20180316 Granted publication date: 20150610 Pledgee: Guangzhou Caold financing Company limited by guarantee Pledgor: GUANGZHOU JOYKO POLYURETHANES CO., LTD. Registration number: 2018440000058 |
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