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Glass fiber reinforced polyurethane product with sandwich and production method thereof

A polyurethane and polyurethane layer technology, applied in chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve the problem of weak bonding between the glass fiber reinforced polyurethane layer and the sandwich layer, increased weight, surface delamination, etc. problem, to achieve the effect of reducing the risk of delamination or delamination, expanding the application range, and increasing rigidity

Active Publication Date: 2016-01-20
YANTAI ZHENGHAI HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, it will lead to the problem of increasing weight and cost
[0010] 2. Surface delamination
For honeycomb paper sandwich products, because the bonding area between the honeycomb paper and the product is very small, the glass fiber reinforced polyurethane layer on the surface will delaminate from the honeycomb paper, resulting in waste products
Low-density foam sandwich products are more prone to problems, because the low-density foam itself has very low strength. When subjected to internal pressure, the glass fiber-reinforced polyurethane layers on the upper and lower surfaces expand outward, and will tear from the middle of the foam layer into two layers. cause waste
[0012] 3. Surface color difference
Because the lower surface accelerates the reaction in advance without mold closing, the foaming and crosslinking reaction of the polyurethane material does not go deep into the interior of the glass fiber after the foaming and crosslinking reaction, but floats outside the glass fiber, causing surface color difference and resulting in glass fiber reinforced polyurethane Insufficient bond between layer and sandwich layer

Method used

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  • Glass fiber reinforced polyurethane product with sandwich and production method thereof
  • Glass fiber reinforced polyurethane product with sandwich and production method thereof
  • Glass fiber reinforced polyurethane product with sandwich and production method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0062] Such as figure 2 As shown, the depression 4 of the glass fiber reinforced polyurethane product with a sandwich is circular, the diameter of the bottom of the depression 4 is 50 mm, and the draft angle of the depression 4 is 30°. A total of 8 depressions 4 are designed, and their distribution is as follows figure 2 , evenly distributed circular depressions 4, the existence of depressions 4 on the product of this embodiment increases the bonding strength between the upper and lower layers of glass fiber reinforced polyurethane layers.

Embodiment 2

[0064] Such as image 3 As shown, the depression 4 of the glass fiber reinforced polyurethane product with a sandwich is a rectangle, the rectangle at the bottom of the depression 4 is 60mm long and 40mm wide, the four corners of the rectangle are rounded, the radius of the rounded corners is 5mm, and the draft of the depression 4 The angle is 30°, a total of 8 depressions are designed, and their distribution is as follows image 3 , evenly distributed rectangular depressions 4, the existence of the depressions 4 on the product of this embodiment increases the bonding strength between the upper and lower layers of glass fiber reinforced polyurethane layers 1 and 2.

Embodiment 3

[0066] Such as Figure 4 As shown, the depression 4 of the glass fiber reinforced polyurethane product with a sandwich is elongated. The depression 4 is 600mm long and 10mm wide. The two ends of the depression 4 are semicircles with a diameter of 10mm. The draft angle of the depression 4 is 30°. 9 depressions 4, distributed as Figure 4 In this embodiment, the glass fiber reinforced polyurethane product with a sandwich has an excellent reinforcement effect in the transverse direction, but the rigidity is reduced by the depression 4 in the longitudinal direction.

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Abstract

The invention discloses a glass fiber reinforced polyurethane product with a sandwich, which comprises upper and lower glass fiber reinforced polyurethane layers, a sandwich layer made of honeycomb paper or low-density foam, and the sandwich layer is bonded on two glass fiber reinforced polyurethane layers. Between the layers, a depression is arranged on one of the glass fiber reinforced polyurethane layers, through which the upper and lower glass fiber reinforced polyurethane layers are bonded together through the sandwich layer. The glass fiber reinforced polyurethane product with a sandwich of the present invention is provided with depressions on the surface of the invisible layer of the product, so that the glass fiber reinforced polyurethane on the upper and lower surfaces can be bonded through the sandwich layer to enhance the rigidity of the product.

Description

technical field [0001] The invention relates to a glass fiber reinforced polyurethane product and its production technology, in particular to a glass fiber reinforced polyurethane product with a sandwich and a production method thereof. Background technique [0002] The glass fiber reinforced polyurethane with sandwich is a kind of composite material, the upper and lower surfaces are glass fiber reinforced polyurethane material, and the sandwich layer in the middle is low density foam material or honeycomb paper. The lower density of the sandwich layer gives the product an excellent lightweight effect. After the polyurethane material is foamed, it immerses the glass fibers on the upper and lower surfaces and is bonded to the sandwich layer in the middle to make the product have good rigidity. Therefore, this new type of product This material is widely used in the field of automotive interior parts such as trunk floors, coat racks, and sunroof sun visors. [0003] The low-de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B3/30B32B27/06B32B27/40B60J7/00
Inventor 李海帆于兆汉朱维珍
Owner YANTAI ZHENGHAI HIGH TECH
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