CN202556822U

CN202556822U - Glass fiber reinforcing polyurethane product with core

Info

Publication number: CN202556822U
Application number: CN2012201558596U
Authority: CN
Inventors: 李海帆; 朱维珍; 郭焕祥; 李光福; 于艳芳
Original assignee: YANTAI ZHENGHAI AUTOMOTIVE INTERIOR CO Ltd
Current assignee: Yantai Zheng Hai He Tai Science and Technology Co., Ltd.
Priority date: 2012-04-13
Filing date: 2012-04-13
Publication date: 2012-11-28
Anticipated expiration: 2022-04-13

Abstract

The utility model discloses a glass fiber reinforcing polyurethane product with a core. The glass fiber reinforcing polyurethane product with the core comprises a low-density foam core layer (3), an upper glass fiber reinforcing polyurethane layer (1) and a lower glass fiber reinforcing polyurethane layer (2). The glass fiber reinforcing polyurethane product with the core is characterized in that the low-density foam core layer (3) is provided with an upper-lower-communicated channel, and high-density polyurethane foam (5) in the channel connects the low-density foam core layer (3) with the upper glass fiber reinforcing polyurethane layer (1) and the lower glass fiber reinforcing polyurethane layer (2) in an adhesive mode. The adhesive force between the upper glass fiber reinforcing polyurethane layer and the lower glass fiber reinforcing polyurethane layer is improved, strength of products is improved, and delaminating defect during production process can be avoided.

Description

A kind ofly have sandwich glass fiber reinforced polyurethane goods

Technical field:

The utility model relates to the glass fiber reinforced polyurethane product technical field, particularly a kind of sandwich glass fiber reinforced polyurethane goods of low density foam that have.

Background technology:

Having the sandwich glass fiber reinforced polyurethane of low density foam is a kind of composite, and shown in accompanying drawing 1, upper and lower surfaces is the polyurethane material that glass fibre strengthens, and middle sandwich of layers is low-density foamed material.The density that sandwich of layers is lower gives product outstanding lightweight effect; The glass fibre of polyurethane material foaming back submergence upper and lower surfaces; And be bonded together with the sandwich of layers of centre; Improve the rigidity of product, so this novel goods extensively are used in automotive upholstery fields such as hat rack, dormer window sunshading boards.

Because low density foam material intensity is lower, influenced by it, with its glass fiber reinforced polyurethane product as sandwich manufacture of materials, rigidity is not very high.For the exigent product of rigidity, need to adopt highdensity foamed material, so just can not embody the effect that reduces cost with weight reduction again.So this application that has the sandwich glass fiber reinforced polyurethane material of low density foam only limits to the not high occasion of requirement of strength.

In addition, because the intensity of low density foam itself is low, in process of production can be too high because of the air pressure of inside, when die sinking, produce and from low density foam, split into bilevel delamination.The yields that delamination has had a strong impact on has limited the practical application of this structure.

Summary of the invention:

The purpose of the utility model is the deficiency that overcomes above-mentioned prior art; And a kind of having of good rigidity of sandwich glass fiber reinforced polyurethane goods that have are provided, solve mainly that the existing rigidity that has sandwich glass fiber reinforced polyurethane goods of low density foam is low to be used limited and production process is prone to delamination and influences problems such as product quality.

The technical scheme of the utility model is: a kind ofly have sandwich glass fiber reinforced polyurethane goods; It is made up of low density foam sandwich of layers, last glass fiber reinforced polyurethane layer and following glass fiber reinforced polyurethane layer; Said low density foam sandwich of layers is between last glass fiber reinforced polyurethane layer and following glass fiber reinforced polyurethane layer; Its special character is to have on the said low density foam sandwich of layers passage that is communicated with up and down, and the high density polyurethane foam in the passage bonds together low density foam sandwich of layers and last glass fiber reinforced polyurethane layer with following glass fiber reinforced polyurethane layer.

Further, the density of said low density foam sandwich of layers is 15-50kg/m ³, thickness is 3-20mm, the passage that is communicated with up and down on it is circular hole, elliptical aperture, bar hole, cruciform vent etc., also can be other shapes, as long as the interior high density polyurethane foam formation of passage is connected up and down.

Further, said passage is a circular hole, Circularhole diameter 1-10mm, and the distance between the circular hole is 5-50mm.

Further, said low density foam sandwich of layers is PU cystosepiment, PP cystosepiment, PE cystosepiment, PS cystosepiment or certain intensity is arranged and durothermic other material cystosepiments.

Further, the said glass fiber reinforced polyurethane layer of going up is glass chopped strand mats or glass fibre continuous felt with the employed glass felt of following glass fiber reinforced polyurethane layer, and the grammes per square metre scope is at 100-450 g/m ²

Further, the density of freely steeping of said high density polyurethane foam is 100-400 kg/m ³, consumption is 50-500 g/m ²

A kind of production method that has sandwich glass fiber reinforced polyurethane goods of the utility model; The upper and lower glass felt and middle that has comprised the steps: to spray the polyurethane foam material has up and down the low density foam plate of communication passage send in the mould, decides according to the prescription of combination material, generally under 80-120 ℃ of temperature and die pressure; The polyurethane foam material generation high density polyurethane foam that reacts; Soak into the glass felt and make glass felt and following glass felt form glass fiber reinforced polyurethane layer and following glass fiber reinforced polyurethane layer respectively, and some high density polyurethane foam infiltration low density foam plate, simultaneously in the communication passage up and down of low density foam plate; Also filled high density polyurethane foam; After the slaking, high-density foam fully solidifies, and die sinking can obtain finished product; High density polyurethane foam in the communication passage bonds together upper and lower glass fiber reinforced polyurethane layer up and down, improves the product bulk strength.

The utility model is described a kind ofly to be had sandwich glass fiber reinforced polyurethane goods and compared with present technology has outstanding substantive distinguishing features and marked improvement; 1, employing has the low density foam sandwich of layers of communication passage up and down; High density polyurethane foam in the communication passage bonds together low density foam sandwich of layers and last glass fiber reinforced polyurethane layer with following glass fiber reinforced polyurethane layer up and down; Bonding force between last glass fiber reinforced polyurethane layer and the following glass fiber reinforced polyurethane layer improves a lot on the low density foam plate than only being bonded in; Make goods have higher bulk strength; Can not occur the phenomenon of two delamination layers up and down in the production process, thereby improve product quality and qualification rate; 2, because the high density polyurethane foam in the passage has high compression strength and tensile strength,, be applicable to the occasion that requirement of strength is higher, enlarged the scope of application so the rigidity of product does not improve a lot with the low density foam material of through hole than employing; 3, because up and down two-layer glass fiber reinforced polyurethane layer couples together through the high density polyurethane foam in the communication passage up and down; So the material to the low density foam sandwich of layers of centre requires to have reduced; Not only can adopt the semi-hard polyurethane foam best with polyurethane foam material compatibility; The low density foam that also can adopt other materials foaming such as PP, PE, PS to process, the goods cost is low in addition, and is in light weight.

Description of drawings:

Fig. 1 is the product structure sketch map of prior art;

Fig. 2 is the product structure sketch map of the utility model;

Fig. 3 is the product structure sketch map partial enlarged drawing of the utility model;

Fig. 4 is the last lower channel distribution map on the low density foam plate;

Fig. 5 is the another kind of distribution map of the last lower channel on the low density foam plate.

The specific embodiment:

Below in conjunction with accompanying drawing the utility model is described.

The product thickness of the utility model is minimum can to reach 3mm, the highlyest can reach 20mm.And different, maximum possible is greater than 1500mm according to concrete application for length and width, and minimum maybe be less than 400mm.The low density foam plate can be selected semi-rigid PU (polyurethane) foam, also can select PP, PE, PS expanded material, and other have certain intensity, and can satisfy the foamed material that serviceability temperature requires.The density of foamed material is minimum can be 15kg/m ³, the highest can be 50 kg/m ³The passage that foamed material is communicated with is up and down selected difformity according to thickness of product and material, and when passage was circular hole, diameter was between 1-10mm, and the spacing between the circular hole is between 5-50mm, and the glass felt can be 100-450 g/m ²Glass chopped strand mats or continuous felt.The density of freely steeping of high density polyurethane foam is 100-400 kg/m ³, the single face consumption is 50-500 g/m ²

The production method of product: be with material according to following glass felt, have communication passage up and down the low density foam plate, go up the glass felt the order lay good, after robot gripping's material on the glass felt on two sides the spraying polyurethane foamed material, send in the mould then; Prescription according to the combination material is decided; Generally under 80-120 ℃ of temperature and pressure, the polyurethane foam material generation high density polyurethane foam that reacts soaks into the glass felt and makes glass felt and following glass felt form glass fiber reinforced polyurethane layer and following glass fiber reinforced polyurethane layer respectively; And some high density polyurethane foam infiltrates the low density foam plate; In the communication passage up and down of low density foam plate, also filled high density polyurethane foam, after the slaking simultaneously; High density polyurethane foam fully solidifies, and die sinking can obtain finished product.

Spraying polyurethane foamed material on following glass felt is covered with the low density foam plate of communication passage up and down then earlier, repaves the glass felt, and spraying polyurethane foamed material on last glass felt is sent into above-mentioned material in the mould then at last, carries out the pressurize slaking.

Embodiment 1, and referring to Fig. 2,3,4,5, sandwich of layers adopts thickness 6mm, density 35kg/m ³The semi-hard polyurethane foam, be covered with the circular hole that is communicated with up and down of diameter 3mm above according to the interval of 15mm, the arrangement mode of circular hole such as Fig. 4 or shown in Figure 5, upper and lower two-layer glass felt adopts 300g/m ²Glass chopped strand mats, the density of freely steeping of polyurethane foam material is 200kg/m ³, the single face consumption is 300g/m ²The order lay of material being pressed glass felt, semi-hard polyurethane cystosepiment, last glass felt is good; Robot gripping's material is spraying polyurethane foamed material on the glass felt on two sides afterwards; Send in the mould then; Pressurize 120s in 100 ℃ mould; Obtain the sandwich glass fiber reinforced polyurethane product of low density foam of thickness 6mm; Its structure is by last glass fiber reinforced polyurethane layer 1, glass fiber reinforced polyurethane layer 2 and middle low density foam sandwich of layers 3 constitute down, and the high density polyurethane foam 5 that is communicated with up and down in the circular hole on the low density foam sandwich of layers 3 bonds together low density foam sandwich of layers 3 and last glass fiber reinforced polyurethane layer 1 the bulk strength raising of product with following glass fiber reinforced polyurethane layer 2.

Embodiment 2, and sandwich of layers adopts thickness 3mm, density 15kg/m ³The PP cystosepiment, be covered with the circular hole that is communicated with up and down of diameter 1mm above according to the interval of 5mm, the arrangement mode of circular hole such as Fig. 4 or shown in Figure 5, two-layer up and down glass felt adopts 100g/m ²The glass fibre continuous felt, the density of freely steeping of polyurethane foam material is 100kg/m ³, the single face consumption is 50g/m ²Elder generation is the spraying polyurethane foamed material on following glass felt; Be covered with the PP cystosepiment that is communicated with circular hole up and down then; Repave the glass felt, spraying polyurethane foamed material on last glass felt is sent into above-mentioned material in the mould then at last; Pressurize 90s in 110 ℃ mould; Carry out the pressurize slaking, obtain the sandwich glass fiber reinforced polyurethane goods of low density foam of thickness 3mm, its structure is by last glass fiber reinforced polyurethane layer 1, glass fiber reinforced polyurethane layer 2 and middle low density foam sandwich of layers 3 bonding forming down; The high density polyurethane foam 5 that is communicated with up and down in the circular hole on the low density foam sandwich of layers 3 bonds together low density foam sandwich of layers 3 and last glass fiber reinforced polyurethane layer 1 with following glass fiber reinforced polyurethane layer 2, the bulk strength of product improves.

Embodiment 3, and sandwich of layers adopts thickness 20mm, density 50kg/m ³The PE cystosepiment, be covered with the circular hole that is communicated with up and down of diameter 10mm above according to the interval of 50mm, the arrangement mode of circular hole such as Fig. 4 or shown in Figure 5, two-layer up and down glass felt adopts 450g/m ²Glass chopped strand mats, the density of freely steeping of polyurethane foam material is 400kg/m ³, the single face consumption is 500g/m ²With each lay layer of glass fiber felt up and down of PE cystosepiment, the two sides is all behind the spraying polyurethane foamed material, and pressurize 120s in 110 ℃ mould obtains the sandwich glass fiber reinforced polyurethane product of low density foam of thickness 20mm, and its structure is with embodiment 1.

The passage that is communicated with up and down on the low density foam plate that the sandwich of layers of the foregoing description is used; Except the circular hole shown in the accompanying drawing; Can also be other shapes such as elliptical aperture, bar hole, cruciform vent; So long as can form the passage that connects up and down to high density polyurethane foam, and guarantee that low density foam plate itself has certain intensity, be not easy broken getting final product in carrying and operation.

The above is merely the preferred embodiment of the utility model, and is in order to restriction the utility model, not all within the spirit and principle of utility model, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the utility model.

The utility model have a substrate that sandwich glass fiber reinforced polyurethane goods can be used as automotive interior material, such as dormer window sunshading board, hat rack.After removing slitter edge, this product can fit lining, installation accessories are produced automotive trim assembly product.

Claims

1. one kind has sandwich glass fiber reinforced polyurethane goods; It is made up of low density foam sandwich of layers (3), last glass fiber reinforced polyurethane layer (1) and following glass fiber reinforced polyurethane layer (2); Said low density foam sandwich of layers (3) is between last glass fiber reinforced polyurethane layer (1) and following glass fiber reinforced polyurethane layer (2); It is characterized in that having on the said low density foam sandwich of layers (3) passage that is communicated with up and down, the high density polyurethane foam (5) in the passage bonds together low density foam sandwich of layers (3) and last glass fiber reinforced polyurethane layer (1) and following glass fiber reinforced polyurethane layer (2).

2. a kind of sandwich glass fiber reinforced polyurethane goods that have according to claim 1, the density that it is characterized in that said low density foam sandwich of layers (3) is 15-50kg/m ³, thickness is 3-20mm, the passage that is communicated with up and down on it is circular hole, elliptical aperture, bar hole or cruciform vent.

3. a kind of sandwich glass fiber reinforced polyurethane goods that have according to claim 2 is characterized in that said passage is a circular hole, Circularhole diameter 1-10mm, and the distance between the circular hole is 5-50mm.