Glass fiber reinforced plastic pipeline and its production process

A glass fiber and reinforced plastic technology, applied in the direction of pipes, rigid pipes, tubular objects, etc., can solve the problems of high friction resistance, rising price of FRP pipe jacking, rough cement surface, etc., and achieve good comprehensive performance and good appearance quality of products , can be designed strong effect

CN100441929CInactive Publication Date: 2008-12-10上海意耐玻璃钢有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2008-12-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention is a glass fiber reinforced plastic pipeline, comprising outer layer and inner layer, characterized in that a filling layer is arranged between the inner and outer layers. And its producing process flow comprises: 1. the producing mould adopts inner mould and outer mould; 2. a group of glass fibers is dipped in unsaturated polyester resin and then coiled on the outer surface of the inner mould and besides, the other group of glass fibers is dipped in unsaturated polyester resin and coiled on the inner surface of the outer mould; 3. injecting the mixture of fillings and unsaturated polyester resin in the annular die formed between the two glass fiber surface layers; 4. the producing mould is heated by electrifying to cure the resin; 5. drawing out the formed pipeline by a tractor and cutting the pipeline for the needed size. And the products are strongly designable and have good synthetic performance. Besides, in the producing course, no styrene volatilizes, according with environmental protection requirements.
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Description

technical field

[0001] The invention belongs to the technical field of manufacturing glass fiber reinforced plastic pipes, in particular to a pultrusion-winding-injection compound molded glass fiber reinforced plastic pipe and its production process. Background technique

[0002] In the municipal engineering of tunnel construction, the application of pipe jacking is more and more favored by users. Most of the pipe jacking currently used is cement pipe jacking, but there are many unfavorable factors in the cement material: cement pipe jacking does not have corrosion resistance, and if it is used in sewage treatment projects, the maintenance cost is relatively high; the surface of the cement is not smooth, which not only causes The fluid resistance during use is large, and the frictional resistance during the construction process is also relatively large, so that the requirements for the jacking work pit and jacking equipment are relatively high, so the length of each jacking ...

Examples

Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and examples. It should be understood that this example is not intended to limit the present invention. Where glass fiber reinforced plastic pipes are prepared using a process similar to the present invention in pultrusion-winding-injection composite molding, All should be included in the protection scope of the present invention.

[0017] A glass fiber reinforced plastic pipe, comprising an outer structural layer (1) and an inner structural layer (3), characterized in that a filler layer (2) is placed between the outer structural layer (1) and the inner structural layer (3) .

[0018] The technological process for producing the above-mentioned glass fiber reinforced plastic pipes is as follows:

[0019] ① The production mold adopts inner mold and outer mold;

[0020] ②The glass fiber is impregnated with unsaturated polyester resin and wound on the outer surface of the ...