Glass fiber-reinforced polyurethane sun roof and production method thereof
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A production method, polyurethane technology, applied in the field of polyurethane products, can solve the problems of polyurethane product curvature and mold differences, and achieve the effects of saving medicine costs, saving labor, and improving quality
Active Publication Date: 2011-07-20
YANTAI ZHENGHAI HIGH TECH
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Problems solved by technology
[0006] The invention mainly solves the problem that the curvature of the polyurethane product produced by the existing method is different from that of the mold
Method used
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Embodiment 1
[0015] Example 1, see figure 1 , 2 , the same as the product in the comparative example, a glass fiber reinforced polyurethane sunshade, with a length of 700mm, a width of 400mm, and a thickness of 7mm. The product is cylindrical, and the radius of curvature in the length direction is 10,000mm; The non-woven fabric layer, glass fiber felt layer, honeycomb paper layer and glass fiber felt layer are laid neatly in order, and the two layers of glass fiber felt layer are 300g / m 2 , honeycomb paper layer thickness 7mm, non-woven fabric 60g / m 2 PET, the front and back of the material are sprayed with polyurethane material, and the spraying density of polyurethane material on both surfaces is 400g / m 2 , feed the material sprayed with polyurethane material into the mold, with the concave surface of the mold facing up, keep the non-woven fabric layer on the glass fiber and put it into the mold, the mold temperature is 120°C, and the pressure is kept for 2 minutes to make polyurethane...
Embodiment 2
[0017] Example 2, see figure 1 , 2 , the same as Example 1, the difference is that the material is laid neatly in the order of glass fiber mat layer, honeycomb paper layer, glass fiber mat layer and non-woven fabric layer from bottom to top, and the non-woven fabric layer is 100g / m 2 PP, after spraying polyurethane material on the surface of the material, keep the non-woven fabric layer on top of the glass fiber felt layer and put it into the mold, the mold temperature is 120°C, hold the pressure for 2 minutes, and take out the product; They are an upper glass fiber reinforced polyurethane layer 1 and a lower glass fiber reinforced polyurethane layer 2, and the upper glass fiber reinforced polyurethane layer 1 is a non-woven fabric reinforced polyurethane layer 4.
[0018] According to the measurement method in the comparative example, the product produced in Example 1 was measured, and the maximum value of the arc was 8.6mm, the minimum value was 4.9mm, and the average val...
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Abstract
The invention discloses a glass fiber-reinforced polyurethane sun roof and a production method thereof. The production method is characterized by comprising the following steps of: laying materials according to an order of a nonwoven fabric layer, a glass fiber felt layer, a honeycomb paper layer and a glass fiber felt layer neatly; spraying polyurethane materials on front and back sides of the materials; feeding the materials sprayed with the polyurethane materials into a mold; reacting under the action of the temperature and the pressure of the mold to bond the materials into a whole by thepolyurethane materials so as to produce a polyurethane product. The structure of the polyurethane product is that: an upper glass fiber-reinforced polyurethane layer (1) and a lower glass fiber-reinforced polyurethane layer (2) are positioned above and below the honeycomb paper layer (3) respectively; and a nonwoven fabric-reinforced polyurethane layer (4) is positioned below the lower glass fiber-reinforced polyurethane layer (2), and also can be positioned above the upper glass fiber-reinforced polyurethane layer (1). By the polyurethane sun roof produced by the method of adding the nonwoven fabric layer besides the glass fiber felt layer, the radian of the product can be changed, so that the radian of the product meets requirements, cost is saved and the quality of the product is improved simultaneously.
Description
Technical field: [0001] The invention relates to the technical field of polyurethane products, in particular to a glass fiber reinforced polyurethane sunshade plate for skylights. Background technique: [0002] Glass fiber reinforced polyurethane products are widely used in the field of automotive interiors. The glass fiber reinforced polyurethane product with honeycomb paper sandwich is a new technology that has appeared in recent years. The upper and lower surfaces of the product are glass fiber reinforced polyurethane layers, and the middle is honeycomb paper. This glass fiber reinforced polyurethane material with honeycomb paper sandwich has high strength , light weight, stable shape and other advantages have been more and more used in the field of automotive interiors such as sunroof sun visors and spare tire covers. [0003] Due to the material, production process and other reasons, the radian of the produced product is not consistent with the radian of the mold; beca...
Claims
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