CN103046654B - Hard foam polyurethane phase-transition heat preservation composite board - Google Patents

Abstract

The invention relates to a rigid foam polyurethane phase-change thermal insulation composite board, which comprises a rigid foam polyurethane thermal insulation layer and a phase-change composite layer. The rigid foam polyurethane thermal insulation layer serves as a core material and is covered by a phase-change composite layer. The composite layer includes the phase-change composite sheet prefabricated by the production line and the phase-change mortar used for spraying and scraping. The rigid foam polyurethane phase-change thermal insulation composite board of the present invention cleverly combines thermal insulation and phase-change thermal insulation together, and has a higher system thermal resistance than the existing rigid foam polyurethane thermal insulation system and phase-change thermal insulation system, and realizes It ensures the recycling of energy, and the fire performance of the system has reached the composite A level in the "Classification Method of Combustion Performance of Building Materials" GB8624-97. It is an ideal product for realizing building energy saving of 75% and building green buildings.

Description

Rigid polyurethane foam phase change thermal insulation composite board

technical field

The invention relates to the field of building energy-saving materials, in particular to a rigid foam polyurethane phase-change thermal insulation composite board.

Background technique

With the development of urbanization and the continuous improvement of people's quality of life, people's requirements for indoor environment comfort are getting higher and higher, and the energy consumption of air conditioners has also increased significantly. According to statistics, the proportion of building energy consumption in my country has already Reaching 35% of the energy consumption of the whole society, the huge energy consumption of buildings will become an important reason restricting the sustainable development of economy and society. An important way for the sustainable development of society.

At present, there are no more than two ways for building thermal insulation to realize building energy conservation. Materials with low thermal conductivity such as glass wool and glass wool can effectively block heat conduction, ignoring the recycling of energy, and due to the inertness of heat transfer, a large amount of heat energy is enriched on the surface of the heat insulating material, so that the heat insulating material is generated under the action of the thermal gradient. Deformation, decomposition; Phase change thermal insulation The products popularized and used at this stage are mainly phase change thermal insulation mortars. This type of material has obvious thermal bridge effect, and the ability to absorb and release heat energy is weak when the temperature difference is small, so it cannot Full recycling of heat energy results in loss and waste of energy.

Contents of the invention

The technical problem solved by the present invention is to provide a rigid polyurethane foam phase-change thermal insulation composite board, which skillfully integrates heat insulation and phase-change thermal insulation together, not only saves energy but also realizes energy recycling, and is beneficial to indoor people. The environment has been effectively adjusted, which saves the investment in infrastructure such as steam boilers and fuel heaters and the daily fuel consumption, and reduces the harsh weather such as severe cold and heat, snow and rain, etc. Make the thermal insulation material in a relatively mild condition, prolong the durability of the thermal insulation system, improve the safety of the system, and have a higher system thermal resistance, it is an ideal material for achieving high energy-saving indicators of buildings and building green buildings .

In order to achieve the above object, the technical scheme adopted in the present invention is:

The invention discloses a rigid foam polyurethane phase-change thermal insulation composite board. The rigid foam polyurethane phase-change thermal insulation composite board comprises a core material rigid foam polyurethane thermal insulation layer and a phase-change composite layer.

The coating of the rigid foam polyurethane insulation layer by the phase change composite layer includes double-sided sandwich coating and six-sided full coating.

The rigid polyurethane foam is formed by mixing polymerized polyisocyanate and composite material according to the mass ratio of 3/1-1/3 and then foaming. The composite material is compounded by one or more of polyether polyol, polyester polyol, flame retardant, foaming agent and foam stabilizer.

The phase change composite layer includes a prefabricated phase change sheet and ready-made phase change mortar. The phase change sheet is composed of a phase change slurry coated on a framework material. The phase change mortar is composed of 1-80 parts of phase change material, 10-50 parts of cement, 20-70 parts of river sand, 5-50 parts of redispersible rubber powder, 0.01-10 parts of crack-resistant fiber and additives. The phase change slurry is composed of 1-80 parts of phase change material, 10-50 parts of cement, 5-40 parts of quartz powder, 20-70 parts of river sand, 5-30 parts of flame retardant, 5-30 parts of water-based polymer Emulsion and admixture composition.

The skeleton material is one of glass fiber felt, alkali-resistant glass fiber mesh cloth, glass wool, and rock wool fiber felt.

The redispersible rubber powder is one or more of VAE rubber powder, PVA rubber powder, and styrene-acrylic rubber powder.

The crack-resistant fiber is one or more of polypropylene fiber, polyethylene fiber, polyvinyl chloride fiber and glass fiber.

The water-based polymer emulsion is composed of one or more of pure acrylic emulsion, styrene-acrylic emulsion, vinegar-acrylic emulsion, silicon-acrylic emulsion, and VAE emulsion.

The flame retardant is composed of one or more of TCEP, TCPP, TDCPP, DMMP, ammonium polyphosphate, triphenyl phosphate, antimony trioxide, magnesium hydroxide, aluminum hydroxide, and silicon-based flame retardants

The admixture is composed of one or more of water reducer, dispersant, pumping agent, retarder, thickener and water retaining agent.

The phase change material is made of natural paraffin, synthetic paraffin or a mixture of natural paraffin and synthetic paraffin.

The rigid polyurethane foam phase-change thermal insulation composite board of the present invention cleverly integrates heat insulation and phase-change thermal insulation together, not only saves energy but also realizes the recycling of energy, and effectively regulates the living environment of indoor people. It saves the investment in infrastructure such as steam boilers and fuel-fired heaters and the daily fuel consumption, and reduces the harsh climate such as severe cold and heat, snow and rain, etc. Under moderate conditions, it prolongs the durability of the insulation system, improves the safety of the system, and has a higher system thermal resistance. It is an ideal material for achieving high energy-saving indicators and building green buildings.

Description of drawings

Fig. 1 is DSC thermal analysis spectrum, wherein [1] is the thermal analysis curve of common rigid foam polyurethane thermal insulation composite board, and [2] is the thermal analysis curve of rigid foam polyurethane phase change thermal insulation composite board of the present invention;

Fig. 2 and Fig. 3 are structural schematic diagrams of the rigid polyurethane foam phase-change thermal insulation composite board of the present invention.

Detailed ways

For further illustrating the present invention, specifically illustrate in conjunction with following examples:

Embodiment one

According to the rigid foam polyurethane phase change composite board of the present invention, according to the following proportioning:

After the paraffin is heated and emulsified, it is dispersed in the mixture of styrene-acrylic emulsion, cement, quartz powder, river sand, TCEP, and water reducer to form a phase-change glue, and then the phase-change glue is scraped on the glass fiber felt through the coil production line. Drying is made into a phase-change sheet, and then the mixture of polymerized polyisocyanate and polyether polyol is poured on the phase-change sheet according to the ratio on the continuous foaming line to form a rigid polyurethane phase-change composite board. The cross-sectional structure of the obtained rigid polyurethane foam phase-change composite board is shown in Fig. 3 . Among them, the water reducer refers to the admixture that can reduce the mixing water consumption and improve the concrete strength under the condition of the concrete workability and the constant cement consumption; or the admixture that can save the cement consumption under the condition of the constant workability and strength. Including sodium lignin sulfonate superplasticizer, naphthalene superplasticizer, aliphatic superplasticizer, amino superplasticizer, polycarboxylic acid superplasticizer, etc.

Embodiment two

According to the rigid foam polyurethane phase-change thermal insulation composite board of the present invention, according to the following proportions:

Polymerized polyisocyanate and combined materials are produced on a continuous foaming line or intermittent mold foaming line according to the ratio to produce a rigid polyurethane foam board, then the paraffin is heated and emulsified to make microcapsules, and then cement, river sand, Quartz powder, VAE redispersible rubber powder, water retaining agent, and polypropylene fiber are mixed in the mortar dry mixer and discharged to make a phase change mortar. Finally, an appropriate amount of water is added to mix with the phase change mortar and then sprayed or scraped on the hard foam. The upper and lower sides of the polyurethane bare board form a rigid polyurethane foam phase-change thermal insulation composite board. The cross-sectional structure of the obtained rigid polyurethane foam phase-change composite board is shown in Figure 2. The water-retaining agent uses superabsorbent resin, which is a functional polymer material with particularly strong water absorption capacity. Non-toxic and harmless, repeatedly release and absorb water.

Coil production line, continuous foaming production line, intermittent mold foaming line and mortar dry mixing machine are all mature commercially available equipment and will not be described here.

Fig. 1 is DSC thermal analysis spectrum, wherein [1] is the thermal analysis curve of common rigid foam polyurethane thermal insulation composite board, and [2] is the thermal analysis curve of rigid foam polyurethane phase change thermal insulation composite board of the present invention, can be obvious from the figure It can be seen that [1] is a smooth curve, and there are no absorption and exothermic peaks at -20°C to 150°C, indicating that ordinary rigid foam polyurethane insulation composite boards do not have phase change characteristics, and curve [2] has The obvious endothermic peak indicates that the rigid polyurethane foam phase-change thermal insulation composite board can perform phase-change temperature regulation within this temperature range.

The above-mentioned embodiments are only descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. All such modifications and improvements should fall within the scope of protection defined by the claims of the present invention.

Claims (2)

1. a hard foam polyurethane phase-transition heat preservation composite board, it is characterized in that: described hard foam polyurethane phase-transition heat preservation composite board comprises hard-foam polyurethane insulation layer (1) and phase transformation composite bed (2), in described hard-foam polyurethane insulation layer (1) to be coated on by phase transformation composite bed (2) as core;

Described hard-foam polyurethane insulation layer (1) is carried out mixing post-foaming by polymeric multi isocyanate and premixed systems according to mass ratio 3/1 ~ 1/3 and is formed; Described premixed systems forms by one or more in PPG, PEPA, fire retardant, blowing agent, foam stabilizer are composite;

The phase transition mortar that described phase transformation composite bed (2) comprises prefabricated profiled phase transformation sheet material and now joins; Described phase transformation sheet material is coated on framework material by phase transformation slip and forms; Described phase transition mortar is made up of 1-80 part phase-change material, 10-50 part cement, 20-70 part river sand, 5-50 part re-dispersible glue powder, 0.01-10 part anti-crack fiber and Admixture; Or described phase transformation slip is made up of 1-80 part phase-change material, 10-50 part cement, 5-40 part quartz powder, 20-70 part river sand, 5-30 part fire retardant, 5-30 part aqueous polymer emulsion and Admixture; Wherein said Admixture is made up of one or several in water reducing agent, dispersing agent, pumping admixture, retarding agent, thickener;

Described framework material is that the one in glass mat, alkali resistant glass fibre open weave cloth, glass silk flosssilk wadding, rock wool fibers felt is formed;

Described re-dispersible glue powder is one or several formations in VAE rubber powder, PVA rubber powder, phenylpropyl alcohol rubber powder;

Described anti-crack fiber is one or several formations in polypropylene fibre, polyethylene fibre, polyvinyl chloride fibre, glass fiber;

Described aqueous polymer emulsion is made up of one or several in pure acrylic latex, benzene emulsion, acrylate and vinyl acetate emulsion, Silicone acrylic emulsion, VAE emulsion;

Described fire retardant is made up of one or more in TCEP, TCPP, TDCPP, DMMP, APP, triphenyl phosphate, antimony oxide, magnesium hydroxide, aluminium hydroxide, silicon-series five-retardant;

Described phase-change material is the mixture of natural paraffin wax, synthesis paraffin or natural paraffin wax and synthesis paraffin.

2. hard foam polyurethane phase-transition heat preservation composite board according to claim 1, is characterized in that: coated the comprise two-sided clip pericardium of described phase transformation composite bed (2) to hard-foam polyurethane insulation layer (1) covers whole parcel with six.