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Manufacturing method and product of hemp fiber composite mould pressing automobile interior parts

A technology for automobile interior trim parts and a manufacturing method, which is applied to interior products, hemp fiber composite molded automobile interior trim parts and their manufacturing fields, can solve the problems of high production cost, large product thickness, easy deformation, etc., and achieves low cost, The effect of short molding time and small deformation

Inactive Publication Date: 2017-03-01
扬州市邗江扬子汽车内饰件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The density of this kind of product is still high, and the product thickness is large, easy to deform, and the production cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The manufacture method of jute fiber composite molded automobile door inner liner comprises the steps:

[0021] 1) After the natural jute fiber is combed by a carding machine, it is laid in parallel to form a continuous hemp mat with a thickness of 15mm;

[0022] 2) Impregnate the hemp felt in the prepared phenolic resin adhesive; the content of each component in the phenolic resin adhesive is: 15wt% urea modified phenolic resin, 10wt% glue, 10wt% sodium hydroxide and 65wt% water;

[0023] 3) Take out the impregnated hemp felt, and dry it at 50-60°C until the water content is 8-10%, forming a blank felt with glue, and the amount of phenolic resin glue applied is 10wt%;

[0024] 4) After cutting the blank felt with rubber, lay it in the door liner forming mold, press it at 150°C with a pressure of 5MPa, hold the pressure for 120s, and the thickness of the pressed workpiece is 3-4mm;

[0025] 5) After the mold is opened, the workpiece is taken out, and the excess edge m...

Embodiment 2

[0027] The manufacture method of the kenaf fiber composite molded automobile interior trim panel comprises the following steps:

[0028] 1) After carding the kenaf fibers, lay the web to form a continuous hemp mat with a thickness of 25mm; when laying the net, use the cross-folding method to lay the net;

[0029] 2) Impregnate the hemp felt in the prepared phenolic resin adhesive; the content of each component in the phenolic resin adhesive is: 35wt% urea modified phenolic resin, 5wt% glue, 5wt% sodium hydroxide and 55wt% water;

[0030] 3) Take out the impregnated hemp mat and dry it at 60°C until the moisture content is 8-10% to form a blank mat with glue. The drying temperature is 25wt% when impregnating the hemp mat. ;

[0031] 4) After cutting the blank felt with rubber, lay it in the side panel forming mold, press it at 200°C with a pressure of 3MPa, hold the pressure for 180s, and the thickness of the pressed workpiece is 3-4mm;

[0032] 5) After the mold is opened, ...

Embodiment 3

[0034] A method for manufacturing a flax fiber composite molded automotive interior roof, comprising the steps of:

[0035] 1) After combing the flax fibers, laying nets to form a continuous flax felt with a thickness of 20mm;

[0036] 2) Impregnate the hemp felt in the prepared phenolic resin adhesive; the content of each component in the phenolic resin adhesive is: 20wt% urea modified phenolic resin, 10wt% glue, 10wt% sodium hydroxide and 60wt% water;

[0037] 3) Take out the impregnated hemp felt, and dry it at 55°C until the moisture content is 8-10%, forming a blank felt with glue; when impregnating the hemp felt, the glue amount of the phenolic resin adhesive is 15wt%;

[0038] 4) After cutting the blank felt with rubber, lay it in the interior ceiling molding mold, press it at 180°C with a pressure of 4MPa, hold the pressure for 150s, and the thickness of the pressed workpiece is 3-4mm;

[0039] 5) After the mold is opened, the workpiece is taken out, and the excess e...

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PUM

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Abstract

The invention discloses a manufacturing method and a product of hemp fiber composite mould pressing automobile interior parts, wherein the automobile interior product is prepared by compositely mould-pressing hemp fibers and urea-modified phenolic resin. Mixed hemp fibers including one or more of natural jute, kenaf and flax are carded and are spread on a screen into continuous hemp felt, and then the continuous hemp felt is impregnated in an adhesion agent prepared by mixing 15-35% of the urea-modified phenolic resin, 5-10% of tannin extract, 5-10% of sodium hydroxide and water; the hemp felt is then dried to form green body felt being 8-10% in water content. The green body felt is cut, is spread in a moulding die at 150-200 DEG C and is pressed for 120-180 s under 3-5 MPa. The die then is opened and the pressed felt is taken out. The felt is finally deburred to remove residual edge materials, and pores are formed and the felt is coated to produce the automobile interior product. The hemp fibers are environment-friendly and are degradable. With the modified phenolic resin as the adhesion agent, the moulded product has high strength, light weight and low deformation, and is low in VOCs in automobile. The method has short mould pressing time and low cost.

Description

technical field [0001] The invention relates to a hemp fiber composite molded automotive interior trim and a manufacturing method thereof, which belongs to the field of chemical materials and is used for manufacturing automotive door inner liners, side panels, interior ceilings and other interior products. Background technique [0002] my country's automobile manufacturing output has ranked first in the world for many years. With the development of the automobile industry and the continuous improvement of environmental protection requirements, lightweight, environmentally friendly and beautiful automotive interior products have become a development trend. Hemp fiber is a natural renewable fiber with rich resources and low price. Hemp fiber is used as a raw material and phenolic resin to compound it into interior parts such as car door lining panels, side panels, and ceilings. The products are light in weight, good in strength, and do not deform , and beautiful, with good env...

Claims

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Application Information

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IPC IPC(8): C08L1/02C08L61/14C08L61/34C08J5/24B29C70/46
CPCC08L1/02B29C70/46C08J5/24C08J2301/02C08J2361/34C08J2401/02C08J2461/34C08L61/14C08L61/34C08L2205/16
Inventor 曾堃黄玉东丁武学胡祚峰
Owner 扬州市邗江扬子汽车内饰件有限公司
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