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Composite material for repairing non-excavated pipeline and preparation method thereof

A composite material and pipeline repair technology, applied in the directions of reagents, educts, products, etc., can solve the problems of unstable repair effect, high pipeline repair cost, and troublesome construction unit selection of pipeline repair materials, so as to achieve low cost and improve mechanical performance. , the effect of short process flow

Active Publication Date: 2016-07-27
北京北燃环能工程科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Most of the domestic repair equipment and repair materials are imported from abroad, and the imported repair equipment can be used for many years, while a large number of expensive foreign repair materials are imported, resulting in high pipeline repair costs, and due to changes in the domestic construction environment, imported The repair effect of the product is not stable. On the other hand, the quality of foreign products is not perfect. The choice of repair materials for different purposes of pipelines often troubles the construction unit. Woven Cloth Composites Imperative

Method used

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  • Composite material for repairing non-excavated pipeline and preparation method thereof
  • Composite material for repairing non-excavated pipeline and preparation method thereof
  • Composite material for repairing non-excavated pipeline and preparation method thereof

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specific Embodiment approach

[0036] The preparation method of the composite material for trenchless pipeline repair of the present invention has the following process flow: polyester needle-punched nonwoven fabric → hot pressing forming process → VARI forming process → composite material for pipeline repair.

[0037] 1. Hot pressing forming process:

[0038] Put the polyester needle-punched nonwoven fabric and TPU into the mold according to a certain ratio, and perform hot-press molding under certain conditions to obtain a reinforced fabric. The schematic diagram of the hot-press molding process is as follows figure 1 shown.

[0039] 1.1. Raw material selection:

[0040] The present invention uses 1 layer of polyester needle-punched nonwoven fabric and 2 layers of thermoplastic spandex elastomer (TPU) for thermal compression compounding, wherein:

[0041] Polyester needle-punched nonwoven fabric: the square meter weight is 448g / m 2 , The thickness is 3.30mm, the fracture stress in warp and weft directi...

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Abstract

The invention discloses a composite material for repairing a non-excavated pipeline and a preparation method thereof and relates to preparation of the composite material. The composite material is characterized by including the following steps that a polyester needle-punched non-woven fabric and TPU are used as raw materials, hot-pressing molding processing is firstly performed, and then resin injection is performed by adopting a VARI molding process to prepare the composite material for repairing the non-excavated pipeline. The hot-pressing molding and the VARI molding process are combined to develop the composite material for repairing the non-excavated pipeline. The preparation method is short in technological process and lower in cost, the mechanical properties of the developed composite material exceed that of similar composite materials, the composite material can be applied to different diameters of drainage pipelines, water supply pipelines, industrial pipelines and oil, gas and water delivery pipelines and can also be used for repair of different specifications of pipelines and main pipeline joints, repair and renovation of artificial wells and other fields.

Description

Technical field: [0001] The invention relates to the preparation of composite materials, in particular to a composite material for non-excavation pipeline repair and a preparation method thereof. Background technique: [0002] The survival and development of cities need to supply water, gas, oil, electricity, sewage, floods and other functions. In order not to interfere with people's lives, these pipelines are often laid underground, called underground pipelines. Functions can be divided into: gas pipelines, water supply pipelines, drainage pipelines, power pipelines, heat pipelines, and TV, telephone, network cables or optical cables, etc. 15-20 years after urban buried pipelines have been put into use, they have entered a period of high incidence of accidents, and it is urgent to carry out repairs to old pipelines in a planned way. It is a strong requirement of urban construction and modern social life to adopt non-excavation means to solve the excavation problem in moder...

Claims

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Application Information

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IPC IPC(8): C08L77/00C08L63/00C08L75/04B29C70/36
CPCB29C70/36C08L77/00C08L2203/18C08L2205/03C08L2205/16C08L63/00C08L75/04Y02P20/141
Inventor 奚柏君孙西超
Owner 北京北燃环能工程科技有限公司
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