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A continuous production type all-water low-density sound-absorbing panel material and its preparation method
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A low-density, sound-absorbing panel technology, applied in the field of polyurethane foam, can solve the problems of foam bulk density, shrinkage phenomenon, base material adhesion, etc. Effect
Active Publication Date: 2018-01-30
SHANDONG INOV NEW MATERIALS CO LTD
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Abstract
Description
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Problems solved by technology
[0004] The present invention aims at the technical defects of the prior art, and provides a continuous production type all-water low-density sound-absorbing panel material and its preparation method, so as to solve the problems of products when the relevant materials in the prior art are used in the continuous production of sound-absorbing panels. Technical problems such as foam bulk density, shrinkage phenomenon, and adhesion to the substrate are difficult to meet the requirements
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Embodiment 1
[0026] A continuous production type all-water low-density sound-absorbing panel material, including A component and B component, wherein A component is composed of the following components by weight percentage: the first polyether polyol 30%, the second polyether polyol 15%, polyester polyol 10%, foam stabilizer 1.5%, cell opener 0.1%, water 9%, catalyst 1%, flame retardant 30%, emulsifier 3.4%;
[0027] Component B is polymeric diphenylmethane diisocyanate;
[0028] Wherein the first polyether polyol is a polyether polyol with a molecular weight of 850, and the second polyether polyol is a polyether polyol with a molecular weight of 900.
[0029] On the basis of the above technical solutions, the following conditions are met:
[0030] The functionality of the first polyether polyol is 5.7.
[0031] The functionality of the second polyether polyol is 3.
[0038] A continuous production type all-water low-density sound-absorbing panel material, including A component and B component, wherein A component is composed of the following components by weight percentage: the first polyether polyol 50%, the second polyether polyol 5%, polyester polyol 10.5%, foam stabilizer 1%, cell opener 0.9%, water 4%, catalyst 4.6%, flame retardant 15%, emulsifier 9%;
[0039] Component B is polymeric diphenylmethane diisocyanate;
[0040] Wherein the first polyether polyol is a polyether polyol with a molecular weight of 950, and the second polyether polyol is a polyether polyol with a molecular weight of 1100.
[0041] On the basis of the above technical solutions, the following conditions are met:
[0042] The functionality of the first polyether polyol is 5.7.
[0043] The functionality of the second polyether polyol is 3.
[0044] The polyester polyol is phthalic anhydride polyester polyol, and its viscosity at 25° C. is 17000 mpa·s.
[0045...
Embodiment 3
[0050] A continuous production type all-water low-density sound-absorbing panel material, including A component and B component, wherein A component is composed of the following components by weight percentage: the first polyether polyol 60%, the second polyether polyol 5%, polyester polyol 10%, foam stabilizer 1%, cell opener 0.1%, water 4%, catalyst 1.9%, flame retardant 15%, emulsifier 3%;
[0051] Component B is polymeric diphenylmethane diisocyanate;
[0052] Wherein the first polyether polyol is a polyether polyol with a molecular weight of 900, and the second polyether polyol is a polyether polyol with a molecular weight of 1000.
[0053] On the basis of the above technical solutions, the following conditions are met:
[0054] The polyester polyol is a flame-retardant modified aromatic polyester polyol.
[0055] The foam stabilizer is a surfactant produced by Evonik, model B-8870.
[0056] The catalyst is pentamethyldiethylenetriamine.
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Abstract
The invention provides a continuous production-type all-water low-density acoustical board material and a preparation method thereof. According to the technical scheme of the method, as for the technical difficulties in the prior art that a continuous slab product is not environment-friendly, high in foam volume weight during production, severe in shrinkage and poor in cohesive force with a base material, an all-water foaming system is innovatively used, and applicable polyether polyol and flame-retardant polyesterpolyol are selected to be mixed with additives such as a flame retardant and various catalysts in a matched manner to prepare combined polyether for the environment-friendly low-density acoustical board material. Low-density foams generated through reaction of the combined polyether and isocyanate are environment-friendly completely, so that the material is higher in flame retardancy, lower in density and excellent in acoustic absorption effect. A corrugated plate produced by the material is low in foam volume weight which can reach about 24 kg / m<3>, the foams are likely to open to realize the flame-retardant effect, the cohesive property of the corrugated plate and a steel plate is excellent, and the better acoustic absorption effect is realized. Through innovative technical improvements, the outstanding technical effects are realized, meanwhile, the cost is relatively low, the realization is easy and the application prospect is excellent.
Description
technical field [0001] The invention relates to the technical field of polyurethane foam plastics, in particular to a continuous production type all-water low-density sound-absorbing board material and a preparation method thereof. Background technique [0002] At present, polyurethanesandwich panel products can be divided into continuous production and intermittent production according to different production processes. According to different product core materials, there are high-density load-bearing panels, high flame-retardant rock woolpolyurethane composite panels, and low-density sound-absorbing panels. , the density of conventional polyurethane sheet foam core is generally 34 ~ 37kg / m 3 , under this density condition, although the product has better load-bearing capacity and lower thermal conductivity, its cost is higher and its own weight is larger. Conventional products generally use F11, 141b and other blowing agents, which are not environmentally friendly. With...
Claims
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Application Information
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