Inorganic material hybrid hard melamine polyurethane foam heat insulation material, preparation method thereof and combined polyether used therein
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A technology of melamine polyurethane and foam insulation material, which is applied in the field of polymer materials, can solve the problems that the addition ratio is too small to achieve fire resistance and the physical properties of the foam are degraded, and achieve the effects of good adhesion, stable physical properties and low viscosity.
Inactive Publication Date: 2015-10-21
ZHANGJIAGANG DIMENGDE ENERGY SAVING TECH CO LTD
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Problems solved by technology
No matter what kind of material is added, it is an additive type, and it cannot be cross-linked with isocyanate through molecular bonds, so the physical properties of the foam will drop sharply after the addition ratio increases, and the addition ratio will not play a role in fire resistance.
[0005] So far, there is no homogeneous polyurethane insulation material sampled at the construction site, which can pass the flame-retardant B1 level test of GB8624-2012 "Classification Method for Combustion Behavior of Building Materials" and GB50404-2007 "Technical Specifications for Hard Foam Polyurethane Thermal Insulation and Waterproof Engineering" 》Material physical performance testing
Method used
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Embodiment 1
[0054] The combined white material is configured according to the mass parts:
[0055]
[0056]
[0057] The mass ratio of combined white material and isocyanate (MDI) is 1:1, and airless spraying is carried out with a spray gun. The thickness of the obtained polyurethane energy-saving thermal insulation foam is 50mm, and the obtained foam density is 43Kg / m 3 ; Oxygen index: 30.4%, the flame retardant level reaches (GB8624-2012 standard) B1 level.
Embodiment 2
[0059] The combined white material is configured according to the mass parts:
[0060]
[0061]
[0062] The mass ratio of combined white material and isocyanate (MDI) is 1:1, and airless spraying is carried out with a spray gun. The thickness of the obtained polyurethane energy-saving thermal insulation foam: 50mm, and the obtained foam density: 45Kg / m 3 ; Oxygen index: 35.4%, the flame retardant level reaches (GB8624-2012 standard) B1 level.
Embodiment 3
[0064] The combined white material is configured according to the mass parts:
[0065]
[0066]
[0067] The mass ratio of combined white material and isocyanate (MDI) is 1:1, and airless spraying is carried out with a spray gun. The thickness of the obtained polyurethane energy-saving thermal insulation foam: 50mm, and the obtained foam density: 46Kg / m 3 ; Oxygen index: 33.1%, the flame retardant level reaches (GB8624-2012 standard) B1 level.
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Abstract
The invention discloses an inorganic material hybrid hard melamine polyurethane foam heat insulation material, a preparation method thereof and combined polyether used therein. The combined polyether comprises: a polyol flame retardant, hydroxyl calcium phosphate, an inorganic material compounded with hydroxyl calcium phosphate, glycerin, N, N, N, N, N-pentamethyl diethylenetriamine, dimethyl cyclohexyl amine, 33+ / -1Wt.% triethylene diamine's dipropylene glycol solution, organic tin, hexahydro triazine, a foaming agent 141B, water, and silicone oil AK-158. The preparation method includes: mixing the combined polyether with isocyanate in ratio, and then carrying out spraying or casting foaming moulding, thus forming the heat insulation material. The heat insulation material has the characteristics of stable physical performance, no deformation, no shrinkage, strong bonding force, low thermal conductivity, an oxygen index up to over 30%, and a combustion heat release rate increase index of less than 250W / S.
Description
technical field [0001] The invention belongs to the field of macromolecular materials, and in particular relates to a rigid melamine polyurethane thermal insulation material cross-linked and hybridized with calcium hydroxyphosphate and isocyanate, a preparation method thereof, and a combined polyether used therein. Background technique [0002] Due to the special structure of polyurethane foam molecules, it is easy to burn. With the continuous promotion of polyurethane energy-saving thermal insulation rigid foam application technology, the requirements for its flame retardant performance are also getting higher and higher, especially the requirements of GB8624-2012 "Classification Method for Combustion Performance of Building Materials" and GB50016-2014 "Code for Fire Protection Design of Buildings" After the promulgation and implementation, polyurethane foam is facing a severe test in terms of flame retardancy and fire resistance. At present, building energy-saving thermal...
Claims
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Application Information
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