CIPP hose for repairing trenchless underground pipe network, and preparation method and application of CIPP

An underground pipe network and non-excavation technology, which is applied in the direction of pipes/pipe joints/fittings, pipe components, mechanical equipment, etc., can solve the problems of uneven mixing, increase the weight of pipes, air bubbles, and large amount of fillers, etc., and achieve simplified formula , save construction time, and facilitate the effect of mixing

Inactive Publication Date: 2018-06-22
FUDAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many kinds of fillers added, and the amount of fillers is large, which may cause the problem of uneven mixing; at the same time, it also increases the weight of the pipeline and the probability of defects such as air bubbles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A CIPP hose for non-excavation underground pipe network repair, including tubular fiber fabric, resin and curing agent filled in the fiber fabric, and ultra-high molecular weight polyethylene particles, ultra-high molecular weight polyethylene particles and resin, The curing agent is filled together in the fiber fabric, and the ultra-high molecular weight polyethylene particles are concentrated on the inner diameter surface of the fiber fabric. Wherein, the mass percentage of ultra-high molecular weight polyethylene particles is 40%. The fiber fabric is non-woven fabric, the resin is bisphenol A type epoxy resin, and the curing agent is an amine curing agent.

[0029] Preparation method: After uniformly mixing ultra-high molecular weight polyethylene particles, bisphenol A epoxy resin and amine curing agent, pouring into the non-woven fabric from the inner diameter to the outer diameter of the non-woven fabric, turning over the molding, super High-molecular-weight poly...

Embodiment 2

[0032] A CIPP hose for non-excavation underground pipe network repair, including tubular fiber fabric, resin filled in the fiber fabric and a reactive diluent, and also contains ultra-high molecular weight polyethylene fiber, the ultra-high molecular weight polyethylene fiber is It is tubular and laminated on the inner diameter surface of the fiber fabric, and the ultra-high molecular weight polyethylene fiber is also filled with the resin and curing agent. Wherein, the mass percent content of ultra-high molecular weight polyethylene particles is 30%. The fiber fabric is glass fiber, the resin is unsaturated polyester synthesized from maleic anhydride, phthalic anhydride and propylene glycol, and the reactive diluent is styrene.

[0033] Preparation method: Laminate ultra-high molecular weight polyethylene fibers and glass fibers to form composite fabrics, uniformly mix unsaturated polyester and reactive diluents, pour into composite fabrics, turn over molding, and make ultra-...

Embodiment 3

[0036] A CIPP hose for non-excavation underground pipe network repair, including tubular fiber fabric, resin and curing agent filled in the fiber fabric, and ultra-high molecular weight polyethylene particles, ultra-high molecular weight polyethylene particles and resin, The curing agent is filled together in the fiber fabric, and the ultra-high molecular weight polyethylene particles are concentrated on the inner diameter surface of the fiber fabric. Wherein, the mass percentage of ultra-high molecular weight polyethylene particles is 25%. The fiber fabric is glass fiber woven cloth, the resin is bisphenol F type epoxy resin, and the curing agent is a thiol-based curing agent.

[0037] Preparation method: After pre-discharge treatment of ultra-high molecular weight polyethylene particles, uniformly mix ultra-high molecular weight polyethylene particles, bisphenol F-type epoxy resin and mercaptan-based curing agent, from the inner diameter of the glass fiber woven cloth to the...

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PUM

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Abstract

The invention relates to the technical field of pipeline engineering, and discloses a CIPP (cured in place pipe) for repairing a trenchless underground pipe network, and a preparation method and application of the CIPP. The CIPP for repairing the trenchless underground pipe network disclosed by the invention comprises a tubular fiber fabric, resin and a curing agent or a reactive diluent, whereinthe resin, the curing agent and the reactive diluent or the reactive diluent fill the fiber fabric; and the CIPP also comprises ultra-high-molecular-weight polyethylene, wherein the ultra-high-molecular-weight polyethylene is ultra-high-molecular-weight polyethylene particles or ultra-high-molecular-weight polyethylene fibers. The ultra-high-molecular-weight polyethylene has high impact strength,high wear resistance and low friction coefficient, so that the ultra-high-molecular-weight polyethylene is adopted as a single filler, then the CIPP can meet various repair performance requirements such as wear resistance, corrosion resistance, impact resistance, self-lubrication and the like, and meanwhile, the effects of simplifying formula, facilitating stirring and saving construction time areachieved. The ultra-high-molecular-weight polyethylene is safe and nontoxic, so that the CIPP provided by the invention can be used for repairing underground pipelines, and can also be used for repairing drinking water pipelines.

Description

technical field [0001] The invention relates to the technical field of pipeline engineering, in particular to a CIPP hose for trenchless underground pipeline network repair, a preparation method and application thereof. Background technique [0002] With the rapid development of the country's economy, the laying of underground pipe networks has also been extended to various places. Due to the impact of wear, aging, corrosion, etc. during transportation and use, the pipeline needs to be repaired or replaced. Traditional underground pipeline repair needs to excavate the ground first, then repair and replace the pipeline construction, and finally fill the road surface. Such excavation construction method is inefficient and causes a lot of inconvenience to road traffic. Therefore, trenchless pipeline repair technology emerged in developed countries in the 1970s, and has gradually been more and more widely used in my country in recent years. This technology not only has high e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L63/00C08L67/06C08K7/14F16L55/16
CPCC08L23/06C08L63/00C08L67/06C08L2203/18C08L2207/068F16L55/16C08K7/14
Inventor 徐海香周引陈国夫李卓
Owner FUDAN UNIV
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