A kind of polyurethane foam for automobile ceiling produced by using regenerated polyether polyol as raw material and preparation method thereof
A polyether polyol, car roof technology, applied in the field of polyurethane foam, to achieve the effect of increasing plasticity and efficient utilization
Active Publication Date: 2018-01-16
浙江华江科技股份有限公司
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
However, the formula in this patent mainly uses normal polyether polyols, and does not involve recycled polyether polyols recovered from waste PU foam alcoholysis
Method used
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Effect test
Embodiment 1-3
[0040] The operation process is as follows: add the regenerated polyether polyol, mixed polyol, catalyst (DABCONE200 and DABCO NE500), surfactant (B8870), and water into the container according to the formula in Table 1, and stir at high speed for about 10 minutes until the mixture is uniform Form the polyether polyol composite material, then add it to the isocyanate (MR200) weighed in proportion, at a temperature of 20-26 ° C, start stirring and mixing for 20 seconds, then pour it into an open box-shaped mold immediately, let the mixing reaction The material foams and rises evenly, and after 20 to 40 minutes, the mold is opened to take out the foam.
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Abstract
The invention discloses polyurethane foam produced from regenerated polyether polyol and used for automobile roofs, and a preparing method thereof. The PU foam used for the automobile roofs is prepared from a polyether polyol mixed material and isocyanate by a foaming process. The polyether polyol mixed material comprises the regenerated polyether polyol, a mixture of a plurality of kinds of non-regenerative polyether polyol, a foaming agent, a catalyst and a surfactant. The regenerated polyether polyol is used for production of the automobile roofs for the first time, is efficiently utilized and does not increase volatile gases of interior trim parts, thus meeting VOC requirements in the MS300-55 standard. Compared with PU foam using common polyether polyol, the VOC performance and mechanical performance of the PU foam using the regenerated polyether polyol meet requirements on thermoplastic PU foam used for the automobile roofs.
Description
technical field [0001] The invention belongs to the field of polyurethane (PU) foam plastics, and in particular relates to a polyurethane foam for automobile roofs produced by using regenerated polyether polyol as a raw material and a preparation method thereof. Background technique [0002] In the production process of the existing PU composite board type automobile roof, there are mainly three stages: first, the thermoplastic PU foam is generated by the reaction of the polyether polyol composite material and isocyanate, and after the self-crusting part of the foam is removed Cut the foam body to obtain a foam sheet with a certain thickness (usually between 3mm-15mm); in the second stage, it is reinforced by compounding with glue or hot-melt adhesive film, reinforcing fiber and non-woven fabric. The final PU composite sheet; in the third stage, the above-mentioned PU composite sheet is hot-pressed and formed in a mold, and the finished car roof is obtained after cutting. I...
Claims
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IPC IPC(8): C08G18/66C08G18/48C08G18/42C08G65/28C08G63/181C08G101/00
CPCC08G18/3206C08G18/4018C08G18/425C08G18/4804C08G18/4841C08G18/4883C08G18/6674C08G2110/0083
Inventor 楼娣马国维傅华康刘国旺方腾飞蒋义钐蒋子江
Owner 浙江华江科技股份有限公司
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