CN115746691A - Water-blocking material for sealing open pores of heat-insulating material and application thereof - Google Patents
Water-blocking material for sealing open pores of heat-insulating material and application thereof Download PDFInfo
- Publication number
- CN115746691A CN115746691A CN202211261793.3A CN202211261793A CN115746691A CN 115746691 A CN115746691 A CN 115746691A CN 202211261793 A CN202211261793 A CN 202211261793A CN 115746691 A CN115746691 A CN 115746691A
- Authority
- CN
- China
- Prior art keywords
- parts
- water
- blocking
- component
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 45
- 239000011810 insulating material Substances 0.000 title claims abstract description 44
- 239000011148 porous material Substances 0.000 title claims abstract description 14
- 238000007789 sealing Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229920005862 polyol Polymers 0.000 claims abstract description 28
- 150000003077 polyols Chemical class 0.000 claims abstract description 28
- -1 polysiloxane Polymers 0.000 claims abstract description 27
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 18
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 17
- 229920000570 polyether Polymers 0.000 claims abstract description 17
- 239000003054 catalyst Substances 0.000 claims abstract description 16
- 238000009413 insulation Methods 0.000 claims abstract description 14
- 239000000945 filler Substances 0.000 claims abstract description 13
- 239000011248 coating agent Substances 0.000 claims abstract description 12
- 238000000576 coating method Methods 0.000 claims abstract description 12
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 239000012948 isocyanate Substances 0.000 claims abstract description 11
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 11
- 229920000098 polyolefin Polymers 0.000 claims abstract description 11
- 238000005057 refrigeration Methods 0.000 claims description 17
- 230000000903 blocking effect Effects 0.000 claims description 15
- 238000002360 preparation method Methods 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 10
- 239000006260 foam Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 8
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 5
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 5
- 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 4
- 229920002121 Hydroxyl-terminated polybutadiene Polymers 0.000 claims description 4
- 239000004964 aerogel Substances 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- AOFIWCXMXPVSAZ-UHFFFAOYSA-N 4-methyl-2,6-bis(methylsulfanyl)benzene-1,3-diamine Chemical compound CSC1=CC(C)=C(N)C(SC)=C1N AOFIWCXMXPVSAZ-UHFFFAOYSA-N 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052797 bismuth Inorganic materials 0.000 claims description 3
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 3
- APUGANPCBWRHBD-UHFFFAOYSA-N n,n'-di(butan-2-yl)-1,1-diphenylmethanediamine Chemical compound C=1C=CC=CC=1C(NC(C)CC)(NC(C)CC)C1=CC=CC=C1 APUGANPCBWRHBD-UHFFFAOYSA-N 0.000 claims description 3
- 229920001228 polyisocyanate Polymers 0.000 claims description 3
- 239000005056 polyisocyanate Substances 0.000 claims description 3
- 229920001195 polyisoprene Polymers 0.000 claims description 3
- 229920006389 polyphenyl polymer Polymers 0.000 claims description 3
- 229920001451 polypropylene glycol Polymers 0.000 claims description 3
- 229920000909 polytetrahydrofuran Polymers 0.000 claims description 3
- 239000012974 tin catalyst Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 5
- 239000011888 foil Substances 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 230000009467 reduction Effects 0.000 abstract description 2
- 239000003292 glue Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 8
- 239000012774 insulation material Substances 0.000 description 8
- 229920002635 polyurethane Polymers 0.000 description 7
- 239000004814 polyurethane Substances 0.000 description 7
- 238000003756 stirring Methods 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011799 hole material Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- NQRYJNQNLNOLGT-UHFFFAOYSA-N Piperidine Chemical compound C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229920005749 polyurethane resin Polymers 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- VOZKAJLKRJDJLL-UHFFFAOYSA-N 2,4-diaminotoluene Chemical compound CC1=CC=C(N)C=C1N VOZKAJLKRJDJLL-UHFFFAOYSA-N 0.000 description 1
- QMMFVYPAHWMCMS-UHFFFAOYSA-N Dimethyl sulfide Chemical compound CSC QMMFVYPAHWMCMS-UHFFFAOYSA-N 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000011668 ascorbic acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010622 cold drawing Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Landscapes
- Polyurethanes Or Polyureas (AREA)
Abstract
The application relates to a water-blocking material for sealing open pores of a heat-insulating material and application thereof, wherein the water-blocking material comprises a component A and a component B; wherein: the component A comprises the following components in parts by weight: 10-30 parts of polysiloxane, 5-15 parts of polyether polyol and 20-45 parts of isocyanate; the component B comprises the following components in parts by weight: 5-30 parts of polyolefin polyol, 5-25 parts of curing agent, 0.01-1 part of catalyst, 0.01-1 part of defoaming agent and 1-20 parts of filler. The water-blocking material has excellent low-temperature toughness, high and low-temperature alternating adaptability and flame retardance, can be integrally formed on the surface of a heat-insulating material with holes without using glue, and has no splicing seam, so that the problems of moisture absorption, cold insulation capacity reduction and the like of the heat-insulating material due to the fact that water vapor is absorbed from joints and damaged parts of an aluminum foil are solved, a water-blocking coating has excellent toughness and elasticity, is not easy to damage, effectively guarantees the service performance and the service life of the heat-insulating material, and reduces the use cost.
Description
Technical Field
The application relates to the technical field of ship non-metallic materials, in particular to a water-blocking material for sealing the open hole of a heat-insulating material.
Background
The ship cold storage (freezing room and cold storage room) is used as a food storage space and plays a key role in guaranteeing the eating and drinking life of crews. The low temperature and the cleanness are necessary conditions required by the refrigeration house, the adoption of the heat insulating material is an important means for ensuring the temperature of the refrigeration house, and the repeated cleaning is an effective method for ensuring the cleanness of the refrigeration house. After the ship is landed, residual articles on the inner wall of the refrigeration house and the ground are repeatedly washed by water until the refrigeration house is completely cleaned.
At present, the heat insulating material for the ship refrigeration house is mainly made of foam or aerogel materials and is mostly of an open-pore structure. The foam heat-insulating material is mainly organic foam such as polyurethane, rubber and plastic, has low density and good heat-insulating property, but is easy to age and poor in fire resistance, and generates gas harmful to people during combustion. The cold storage is in the environment of alternate dry and wet and cold and hot for a long time by normal temperature cleaning on the shore and low temperature work in navigation. Under the capillary action, the water vapor in the refrigeration house is easily adsorbed on the surface of the foam and enters the foam holes to freeze, so that the foam hole materials form a cold bridge, the heat insulation performance is reduced, and the heat insulation effect is seriously influenced.
The ship cold storage heat insulation surface closed water blocking material is a material which uses specific materials and processes to carry out construction treatment on the surface of the original cellular heat insulation material so as to close the cellular surface and isolate water vapor from entering. The surface of the existing cold storage heat insulating material is generally subjected to barrier type waterproof treatment by adopting a method of paving an aluminum foil, and the following problems are mainly existed: (1) The aluminum foil is only pasted on the heat insulation front surface and is not pasted with 100 percent of six surfaces of the heat insulation material, and water vapor is easy to diffuse and enter through other interfaces; (2) The aluminum foil is stuck and fixed by the adhesive, and the adhesive has higher polarity and is very easy to absorb water, so that heat insulation and moisture absorption are caused; (3) The aluminum foil is easy to be damaged and the waterproof function is lost in the process of installing the decorative plate. At present, the phenomenon of difficult cold drawing of ship cold storages appears.
Disclosure of Invention
The application provides a water blocking material for sealing an opening of an insulating material and application thereof, and aims to solve the problem that in the related art, the heat preservation and heat insulation performance of the insulating material of a ship refrigeration house is reduced due to the fact that moisture is easy to absorb.
In a first aspect, the present application provides a water-blocking material for closing an opening in an insulating material, comprising component a and component B; wherein:
the component A comprises the following components in parts by weight: 10-30 parts of polysiloxane, 5-15 parts of polyether polyol and 20-45 parts of isocyanate;
the component B comprises the following components in parts by weight: 5-30 parts of polyolefin polyol, 5-25 parts of curing agent, 0.01-1 part of catalyst, 0.01-1 part of defoaming agent and 1-20 parts of filler.
In some embodiments herein, the component a comprises the following components by weight: 15-20 parts of polysiloxane, 5-10 parts of polyether polyol and 20-30 parts of isocyanate; the component B comprises the following components in parts by weight: 20-30 parts of polyolefin polyol, 10-20 parts of curing agent, 0.1-0.5 part of catalyst, 0.1-0.6 part of defoaming agent and 10-15 parts of filler.
In some embodiments herein, the polysiloxane comprises at least one of a hydroxyl terminated polysiloxane, an amine terminated polysiloxane;
the polyether polyol comprises at least one of polyoxypropylene polyether polyol and polytetrahydrofuran polyether polyol;
the isocyanate comprises at least one of diphenylmethane diisocyanate, polymethylene polyphenyl polyisocyanate and carbodiimide modified diphenylmethane diisocyanate.
In some embodiments herein, the polyolefin polyol comprises at least one of hydroxyl-terminated polyisoprene, hydroxyl-terminated polybutadiene;
the curing agent comprises at least one of dimethylthiotoluenediamine and bis-sec-butylaminodiphenylmethane;
the catalyst comprises at least one of an organic bismuth catalyst and an organic tin catalyst;
the defoaming agent comprises at least one of BKYA530 and BYK 057;
the filler comprises at least one of montmorillonite, talcum powder and graphene oxide.
In a second aspect, the present application provides an insulating water-blocking structure comprising:
an insulating substrate made of a foam or aerogel material formed on the inner surface of the refrigeration unit,
and the water-blocking coating is coated on the surface of the heat-insulating substrate and is formed by curing the water-blocking material for closing the open pores of the heat-insulating material.
In some embodiments of the present application, the water-blocking coating has a thickness of 2mm or more.
In some embodiments of the present application, the water-blocking coating is prepared by: and (3) spraying the component A and the component B on the surface of the heat-insulating substrate in a crossed manner, and naturally placing.
In a third aspect, the present application provides a refrigeration device, wherein the inner wall surface of the refrigeration device is provided with the above-mentioned heat insulation water blocking structure.
In some embodiments of the present application, the refrigeration device is a marine freezer.
In a fourth aspect, the present application provides a ship, wherein the inner wall of the cold storage is provided with the above-mentioned adiabatic water blocking structure.
The beneficial effect that technical scheme that this application provided brought includes: the application provides a water blocking material for sealing thermal insulation material trompil has excellent low temperature toughness, high low temperature alternating adaptability, fire resistance, after the whole shaping in thermal insulation material surface, do not have the seam, solved inside and the adiabatic insulation performance that arouses of steam from external entering thermal insulation material open structure and reduce, the material softens embrittlement scheduling problem, effectively promoted the heat preservation effect and the life of thermal insulation material, avoid the energy waste, reduce the repair process, reduce use cost.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making creative efforts shall fall within the protection scope of the present application.
The water-blocking material for sealing the open pore of the heat-insulating material comprises a component A and a component B; wherein: the component A comprises the following components in parts by weight: 10-30 parts of polysiloxane (with the weight average molecular weight of 1000-2000), 5-15 parts of polyether polyol (with the weight average molecular weight of 1000-2000) and 20-45 parts of isocyanate; the component B comprises the following components in parts by weight: 5-30 parts of polyolefin polyol (with the weight average molecular weight of 1000-2000), 5-25 parts of curing agent, 0.01-1 part of catalyst, 0.01-1 part of defoaming agent and 1-20 parts of filler.
Further, the component A comprises the following components in parts by weight: 15-20 parts of polysiloxane, 5-10 parts of polyether polyol and 20-30 parts of isocyanate; the component B comprises the following components in parts by weight: 20-30 parts of polyolefin polyol, 10-20 parts of curing agent, 0.1-0.5 part of catalyst, 0.1-0.6 part of defoaming agent and 10-15 parts of filler.
The waterproof material has excellent elasticity, can be integrally formed with the heat-insulating material under the condition of not damaging the heat-insulating material, does not need to be adhered by using an adhesive, and has no seam compared with the traditional coiled material covering material, thereby solving the problems of moisture absorption of the heat-insulating material, reduction of heat insulation and heat preservation performance and the like caused by the absorption of water vapor from the seam.
Compared with common polyurethane resin, the water-blocking material has excellent low-temperature resistance, and can keep better elasticity at low temperature; and the water-proof paint has better hydrophobicity and excellent long-term water resistance. In addition, the water-blocking material has good high and low temperature alternating resistance, flame retardance and water-blocking performance, can effectively prolong the service life of the heat-insulating material, avoids energy waste, reduces the repair process and reduces the use cost.
The water-blocking material is matched with the filler, so that the organic silicon modified polyurethane has high-strength physical and mechanical properties, excellent toughness and water vapor barrier property, the long-term high-humidity environment water resistance of the organic silicon modified polyurethane is improved, the matching performance of the organic silicon modified polyurethane and a heat-insulating material is improved, and the requirements of the organic silicon modified polyurethane on the mechanical and water vapor barrier properties when the organic silicon modified polyurethane is applied to the surface of the heat-insulating material are met.
In a second aspect, the present application provides an insulating water-blocking structure comprising: a heat insulating substrate made of a foam or aerogel material formed on an inner surface of the refrigeration device; and the water-blocking coating is coated on the surface of the heat-insulating substrate and is formed by curing the water-blocking material for closing the open pores of the heat-insulating material. The water-blocking material with excellent low-temperature toughness and high-low temperature alternating resistance is coated on the surface of the heat-insulating material with the open pore structure, so that the functions of opening pore sealing and water blocking can be achieved, the water-blocking material has strong binding force with common ship heat-insulating materials, is directly sprayed on the surface of the heat-insulating material for solidification and molding, is simple in process, has excellent hydrophobic performance, can effectively cope with the humid environment of a ship facing for a long time, improves the heat-insulating and heat-insulating performance of the heat-insulating material, and has a certain corrosion-resistant effect on the heat-insulating material.
In some embodiments, the polysiloxane comprises at least one of a hydroxyl-terminated polysiloxane, an amine-terminated polysiloxane, and a hydroxyl-terminated or amino-terminated polysiloxane that is chemically reactive with the polyurethane resin to modify the polyurethane;
the polyether polyol comprises at least one of polyoxypropylene polyether polyol and polytetrahydrofuran polyether polyol;
the isocyanate comprises at least one of diphenylmethane diisocyanate, polymethylene polyphenyl polyisocyanate and carbodiimide modified diphenylmethane diisocyanate.
In some embodiments, the polyolefin polyol includes at least one of hydroxyl-terminated polyisoprene and hydroxyl-terminated polybutadiene to ensure that the material has certain low-temperature property strength and toughness, hydrophobicity and the like.
And/or the curing agent comprises at least one of dimethylthiotoluenediamine and bis-sec-butylaminodiphenylmethane;
and/or the catalyst comprises at least one of an organic bismuth-based catalyst and an organic tin-based catalyst;
and/or the defoamer comprises at least one of BKYA530 and BYK 057;
and/or the filler comprises lamellar fillers such as montmorillonite, talcum powder and graphene oxide, so as to improve at least one of water resistance.
The preparation method of the water-blocking material comprises the following steps:
preparation of component A: putting polyether polyol and polysiloxane into a reaction kettle, mixing, heating, dehydrating in vacuum, cooling, adding isocyanate into the reaction kettle, stirring, introducing nitrogen, heating, reacting for 2-4 hours, sampling and measuring the content of NCO end groups in the semi-prepolymer, and stopping the reaction when the content of NCO reaches 12-18%;
preparation of component B: adding the polyolefin polyol, the curing agent, the catalyst, the defoaming agent and the filler into a stirring device in proportion, mixing, and then grinding by a sand mill.
The technical solution of the present application is further illustrated by the following examples and comparative examples. Unless otherwise specified, the thermal insulation materials in the following examples and comparative examples are all rigid polyurethane foams which are generally used for thermal insulation of a refrigerator.
Example 1
This example provides a water-blocking material for closing an opening of an insulating material, which is prepared from the raw materials shown in table 1, and which is composed of component a and component B.
TABLE 1
The preparation method of the water-blocking material in the embodiment comprises the following steps:
preparation of component A: adding PDMS2000 and PPG2000 into a reaction kettle, heating to 110 ℃, dehydrating for 2h under the conditions of vacuum degree of-0.09 MPa and stirring speed of 120rpm, cooling to 40 ℃, gradually adding diphenylmethane diisocyanate into the reaction kettle, stirring (stirring speed of 70 rpm), introducing nitrogen, heating to 70 ℃, reacting for 2h, sampling and measuring the-NCO end group content in the semi-prepolymer (a piperidine method), stopping heating and cooling to stop the reaction after a theoretical value of 15% is reached, placing the product into an iron barrel, degassing, filling nitrogen and sealing for later use;
preparation of component B: placing montmorillonite in an oven for drying for 4h, wherein the drying temperature is 120 ℃, naturally cooling for later use, adding hydroxyl-terminated polybutadiene HTPB2000, dimethyl-sulfur-based toluene diamine E-300, a catalyst T-12, a defoaming agent BYK 057 and montmorillonite into a stirring tank in proportion, and premixing for 30 minutes by using a high-speed stirrer (the stirring speed is 1000 r/min); then, the mixture is switched into a sand mill for grinding for 2 hours, and the discharged material is subpackaged in iron drums and is stored in a sealed way;
the preparation method of the heat insulation water blocking structure in the embodiment comprises the following steps:
respectively loading the component A and the component B into corresponding charging barrels, uniformly coating the material on the surface of the heat-insulating material by adopting a spraying process, wherein the thickness is 2mm, and the coating rate is 2.5kg/m 2 And obtaining the heat-insulating water-retaining structure. After the spraying is finished, the material is naturally placed, the surface of the material is dried for 5min, the initial strength can be achieved after 24h, and the final strength is achieved after 7 days. The heat insulating material in this embodiment is a conventional heat insulating material for a ship.
Comparative example 1
The comparative example provides a water blocking material for closing the open pores of an insulating material, a preparation method thereof, and a preparation method of an insulating water blocking structure, including most of the operation steps of example 1, except that PDMS2000 is not included in the raw materials, which are shown in table 2:
TABLE 2
Comparative example 2
The comparative example provides a water blocking material for closing the open pores of an insulating material, a preparation method thereof, and a preparation method of an insulating water blocking structure, including most of the operational steps of example 1, except that no PPG2000 is present in the raw materials, which are shown in table 3:
TABLE 3
And (3) performance testing:
the following performance tests were performed on the thermal insulation structures prepared in example 1 and comparative examples 1 and 2:
hydrophobicity: the test is carried out by referring to GB/T10299-2011, the larger the value is, the better the hydrophobic property is;
tensile strength and elongation at break: the test is carried out according to GB/T1040.1-2018, the larger the numerical value is, the higher the strength is, and the higher the elongation is;
and (3) grid cutting adhesion force: the test is carried out with reference to GB/T9286-2021, the higher the grade, the poorer the adhesion.
TABLE 4
Because the heat-insulating material is generally softer, has low strength, and the water-blocking coating with stronger rigidity is easy to damage the heat-insulating material, the coating with good flexibility can better meet the requirements of a heat-insulating water-blocking structure, has no high requirement on tensile strength, and can be adapted to environments such as low temperature, high-low temperature alternation and the like.
As can be seen from the test results of table 4, the water blocking material for closing the open pores of the thermal insulation material provided by the present application has excellent hydrophobicity, toughness and adhesion. The combination of the data of the embodiment and the comparative example shows that the water-blocking material for sealing the open pores of the heat-insulating material not only greatly improves the hydrophobicity and obviously improves the flexibility on the premise of meeting the basic mechanics and the adhesive force, but also is more suitable for water resistance of the surface of the heat-insulating material, can be used for preparing a heat-insulating water-blocking structure on the surface of the inner wall of a refrigerating device, and is particularly suitable for sealing and blocking the water of the heat-insulating material on the inner wall of a cold storage.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A water-blocking material for sealing the open pores of a heat-insulating material is characterized by comprising a component A and a component B; wherein:
the component A comprises the following components in parts by weight: 10-30 parts of polysiloxane, 5-15 parts of polyether polyol and 20-45 parts of isocyanate;
the component B comprises the following components in parts by weight: 5-30 parts of polyolefin polyol, 5-25 parts of curing agent, 0.01-1 part of catalyst, 0.01-1 part of defoaming agent and 1-20 parts of filler.
2. The water blocking material for closing an opening of an insulating material according to claim 1, wherein:
the component A comprises the following components in parts by weight: 15-20 parts of polysiloxane, 5-10 parts of polyether polyol and 20-30 parts of isocyanate;
the component B comprises the following components in parts by weight: 20-30 parts of polyolefin polyol, 10-20 parts of curing agent, 0.1-0.5 part of catalyst, 0.1-0.6 part of defoaming agent and 10-15 parts of filler.
3. The water blocking material for closing an opening of an insulating material according to claim 1, wherein: the polysiloxane comprises at least one of hydroxyl-terminated polysiloxane and amino-terminated polysiloxane;
the polyether polyol comprises at least one of polyoxypropylene polyether polyol and polytetrahydrofuran polyether polyol;
the isocyanate comprises at least one of diphenylmethane diisocyanate, polymethylene polyphenyl polyisocyanate and carbodiimide modified diphenylmethane diisocyanate.
4. The water-blocking material for closing an opening of an insulating material as claimed in claim 1, wherein:
the polyolefin polyol comprises at least one of hydroxyl-terminated polyisoprene and hydroxyl-terminated polybutadiene;
the curing agent comprises at least one of dimethylthiotoluenediamine and bis-sec-butylaminodiphenylmethane;
the catalyst comprises at least one of an organic bismuth catalyst and an organic tin catalyst;
the defoaming agent comprises at least one of BKYA530 and BYK 057;
the filler comprises at least one of montmorillonite, talcum powder and graphene oxide.
5. The utility model provides an adiabatic structure that blocks water which characterized in that: the method comprises the following steps:
a thermally insulating substrate made of a foam or aerogel material formed on the inner surface of the refrigeration unit,
a water-blocking coating applied to a surface of an insulating substrate, cured from the water-blocking material for closing an opening of an insulating material according to any one of claims 1 to 3.
6. The insulating water-blocking structure of claim 1, wherein: the thickness of the water-blocking coating is more than or equal to 2mm.
7. The insulating water-blocking structure of claim 1, wherein: the preparation method of the water-blocking coating comprises the following steps: and (3) spraying the component A and the component B on the surface of the heat-insulating substrate in a crossed manner, and naturally placing.
8. A refrigeration device, characterized by: the inner wall surface of the refrigerating device is provided with an insulating water-blocking structure according to any one of claims 5 to 7.
9. A refrigeration unit as recited in claim 8 wherein: the refrigerating device is a ship refrigeration house.
10. A marine vessel, characterized by: the inner wall of the cold storage is provided with the heat-insulation water-blocking structure according to any one of claims 5 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211261793.3A CN115746691B (en) | 2022-10-14 | 2022-10-14 | Water-blocking material for closing open pores of heat insulating material and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211261793.3A CN115746691B (en) | 2022-10-14 | 2022-10-14 | Water-blocking material for closing open pores of heat insulating material and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115746691A true CN115746691A (en) | 2023-03-07 |
| CN115746691B CN115746691B (en) | 2023-11-17 |
Family
ID=85351499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211261793.3A Active CN115746691B (en) | 2022-10-14 | 2022-10-14 | Water-blocking material for closing open pores of heat insulating material and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115746691B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107903803A (en) * | 2017-11-27 | 2018-04-13 | 烟台市顺达聚氨酯有限责任公司 | A kind of freezer high water vapor rejection polyurethane coating and preparation method thereof |
| CN108441097A (en) * | 2018-03-29 | 2018-08-24 | 砺剑防务技术集团有限公司 | A kind of nanometer of low surface energy anti-fouling paint and preparation method |
| CN109575667A (en) * | 2017-09-28 | 2019-04-05 | 祝凤娟 | A kind of thin layer heat-barrier material |
| CN109912837A (en) * | 2019-03-18 | 2019-06-21 | 华南理工大学 | A kind of hydrophobicity graphene aerogel coating flame retarded rigid polyurethane foams and preparation method thereof |
| CN110483833A (en) * | 2019-08-28 | 2019-11-22 | 北京化工大学 | A kind of preparation method of surface coating flame retarded rigid polyurethane foams plastics |
| CN111675958A (en) * | 2020-07-08 | 2020-09-18 | 王振海 | Protective coating material for ships, naval vessels and offshore drilling platforms and preparation method |
| CN113105820A (en) * | 2020-01-13 | 2021-07-13 | 宁波朗茵新材料有限公司 | Formula and preparation process of anti-condensation spray |
-
2022
- 2022-10-14 CN CN202211261793.3A patent/CN115746691B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109575667A (en) * | 2017-09-28 | 2019-04-05 | 祝凤娟 | A kind of thin layer heat-barrier material |
| CN107903803A (en) * | 2017-11-27 | 2018-04-13 | 烟台市顺达聚氨酯有限责任公司 | A kind of freezer high water vapor rejection polyurethane coating and preparation method thereof |
| CN108441097A (en) * | 2018-03-29 | 2018-08-24 | 砺剑防务技术集团有限公司 | A kind of nanometer of low surface energy anti-fouling paint and preparation method |
| CN109912837A (en) * | 2019-03-18 | 2019-06-21 | 华南理工大学 | A kind of hydrophobicity graphene aerogel coating flame retarded rigid polyurethane foams and preparation method thereof |
| CN110483833A (en) * | 2019-08-28 | 2019-11-22 | 北京化工大学 | A kind of preparation method of surface coating flame retarded rigid polyurethane foams plastics |
| CN113105820A (en) * | 2020-01-13 | 2021-07-13 | 宁波朗茵新材料有限公司 | Formula and preparation process of anti-condensation spray |
| CN111675958A (en) * | 2020-07-08 | 2020-09-18 | 王振海 | Protective coating material for ships, naval vessels and offshore drilling platforms and preparation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115746691B (en) | 2023-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102633974B (en) | High-flame-retardance temperature preservation plate and preparation method thereof | |
| CN105778847A (en) | Double-component solvent-free polyurethane adhesive | |
| CN103923290B (en) | A kind of two component raw material of hard polyurethane foam and constructional method thereof being applicable to low temperature environment | |
| CN108892471B (en) | Preparation method of composite heat insulation felt | |
| CN111518462A (en) | Anticorrosive spray polyurea elastomer and preparation method and application thereof | |
| CN102900163A (en) | High-strength PU compound A-level fireproof heat-insulating pate and preparation method thereof | |
| NZ230054A (en) | Preparation of compression moulded materials using polyisocyanate-based binder | |
| CN114044871A (en) | Heat-insulation polyurethane foam for power battery pack and preparation method thereof | |
| CN115746691A (en) | Water-blocking material for sealing open pores of heat-insulating material and application thereof | |
| CN104960804B (en) | A kind of styrene storage tank thermal control coating | |
| CN105348479A (en) | High-weatherability nano-composite thermal insulating material and preparation method thereof and insulation board | |
| CN109810623A (en) | A kind of moisture-proof trapping coating of freezer polyurethane and its preparation process | |
| CN116463046B (en) | Functional carbon-point polyurethane urea composite marine anti-corrosion coating with self-repairing performance and preparation method thereof | |
| CN113480925A (en) | Method for manufacturing high-performance solvent-free flame-retardant polyurea coating | |
| JP2012013114A (en) | Heat insulating member and building member using the same | |
| CN109880501B (en) | Explosion-proof glass based on 3D network structure coating and preparation method thereof | |
| CN110724246A (en) | Free foaming sealing material composite material and preparation method thereof | |
| CN106832212B (en) | Storage-type electric water heater polyurethane rigid foam material and preparation method thereof | |
| CN114133512B (en) | All-water foaming polyurethane raw material composition for polyurethane security door and preparation method thereof | |
| CN104803657A (en) | Energy-saving material with thermal insulation function | |
| CN114574081A (en) | Preparation method of heavy-duty anticorrosive protective coating for metal surface | |
| CN114015004A (en) | Shock-absorbing polyurea rigid foam material and preparation method and application thereof | |
| CN113858359A (en) | Preparation method of plastic-replacing biomass-based cold-chain logistics heat-insulation material | |
| CN208951659U (en) | A kind of enhancing support tube | |
| CN111253851A (en) | High-strength polyurethane waterproof coating and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |