Polyurethane foam composition
A technology of polyurethane foam and composition, which is applied in the field of polyurethane foam composition for preparing thermal insulation and sound insulation pads of automobile engines, can solve the problems of small glass dust size, irritating smell, skin irritation, etc. Plasticity, good sound absorption effect
Inactive Publication Date: 2012-03-07
LIYANG SHANHU IND CO LTD
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Problems solved by technology
[0002] At present, glass wool is generally used as the heat and sound insulation material of automobile engines. Because the glass dust in glass wool is extremely small in size, it is easy to enter the human body and is not easily discharged by the human body. It is irritating to the skin, and people with sensitive skin will get red when they touch it At the same time, due to the addition of a large amount of phenolic resin and adhesive to the glass wool, the pungent smell is emitted during the molding process, the pollution is serious, and the VOC standard cannot be reached.
Method used
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Embodiment 1
[0010] The polyurethane foam composition comprises component A and component B, and component A is the mixture that the polyether polyol of 100 mass parts and the graphite of 20 mass parts form, and component B is the polyisocyanate of 175 mass parts; Wherein,
[0011] The hydroxyl value of the polyether polyol is 100±10mgKOH / g, the viscosity at 25°C is 650±100 mPa·s, and the specific grade is HCF-3403, provided by Nanjing Huike Polymer Material Co., Ltd.;
[0012] The component B is composed of HICOMATE8025 and PM200 provided by Nanjing Huike Polymer Material Co., Ltd. by mixing the same mass. The content of NCO is 25±1%, and the viscosity at 25°C is 450±100 mPa·s.
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Abstract
The invention relates to a polyurethane foam composition which is characterized by comprising component A and component B, wherein, component A is a mixture composed of 100 parts by mass of polyether polyol and 20 parts by mass of graphite, component B is 175 parts by mass of polyisocyanates, the hydroxyl value of polyether polyol is 100+-10 mg KOH / g, the viscosity of polyether polyol is 650+-100 mPa.s at a temperature of 25 DEG C, the content of NCO in polyisocyanates is 25 +- 1%, and the viscosity of polyisocyanates is 450+-100 mPa.s at a temperature of 25 DEG C. Polyurethane foam prepared from the composition provided in the invention has good plasticity; uniform honeycomb-like foam structures in foam blocks enable the foam to have good sound-absorbing and heat insulation effects, and the defect of inflammability of polyurethane is overcome, meeting flame retardation standard for automobile interior decoration.
Description
technical field [0001] The invention relates to a polyurethane foam composition, in particular to a polyurethane foam composition suitable for preparing automobile engine heat and sound insulation pads. Background technique [0002] At present, glass wool is generally used as the heat and sound insulation material of automobile engines. Because the glass dust in glass wool is extremely small in size, it is easy to enter the human body and is not easy to be discharged by the human body. At the same time, due to the addition of a large amount of phenolic resin and adhesive to the glass wool, the pungent smell is emitted during the molding process, the pollution is serious, and the VOC standard cannot be met. Contents of the invention [0003] The object of the present invention is to provide a polyurethane foam composition suitable for preparing automobile engine heat and sound insulation pads. [0004] The technical scheme of the present invention is: a kind of polyurethan...
Claims
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IPC IPC(8): C08G18/72C08G18/48C08K3/04C08G101/00
Inventor 李田生
Owner LIYANG SHANHU IND CO LTD