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Preparation method of impact-resistant strain-corrosion-resistant continuously-wound glass steel tube

The technology of glass fiber reinforced plastic and glass fiber reinforced plastic is applied in the field of preparation of continuous winding glass steel pipe, which can solve the problems of many structural layers and low curing efficiency of glass fiber reinforced plastic PE composite pipe, and achieve the effects of good impact resistance, improving curing speed and avoiding air bubbles.

Inactive Publication Date: 2020-08-07
福建安东实业有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the FRP PE composite pipe has many structural layers and low curing efficiency

Method used

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  • Preparation method of impact-resistant strain-corrosion-resistant continuously-wound glass steel tube

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of preparation method of continuous winding glass steel pipe with impact resistance and strain corrosion resistance

[0032] Including raw material preparation, continuous winding of FRP lining layer and FRP structural layer, curing and setting, cutting;

[0033] Specific steps are as follows:

[0034] Step 1, raw material preparation: prepare respectively the fiberglass inner liner compound and the fiberglass structure layer material, for subsequent use;

[0035] Among the above, the preparation method of the FRP inner lining layer mixture is: mix the flexible unsaturated polyester resin, initiator, cyclohexanone peroxide dibutyl phthalate paste, and after fully stirring for 5 minutes, the FRP inner lining layer is obtained. Mixture; Wherein, contain tetrahydrophthalic anhydride group in flexible unsaturated polyester resin molecular chain; The mass ratio of flexible unsaturated polyester resin, initiator, cyclohexanone peroxide dibutyl phthalate paste is 10: ...

Embodiment 2

[0040] A kind of preparation method of continuous winding glass steel pipe with impact resistance and strain corrosion resistance

[0041] Including raw material preparation, continuous winding of FRP lining layer and FRP structural layer, curing and setting, cutting;

[0042] Specific steps are as follows:

[0043]Step 1, raw material preparation: prepare respectively the fiberglass inner liner compound and the fiberglass structure layer material, for subsequent use;

[0044] Among the above, the preparation method of the FRP inner liner compound is: mix the flexible unsaturated polyester resin, auxiliary agent, initiator, cyclohexanone peroxide dibutyl phthalate paste, and fully stir for 1min to obtain FRP Inner liner mixture; wherein, the flexible unsaturated polyester resin molecular chain contains tetrahydrophthalic anhydride groups; flexible unsaturated polyester resin, auxiliary agent, initiator, dibutyl peroxide cyclohexanone phthalate paste The mass ratio is 10:1.6:...

Embodiment 3

[0049] A kind of preparation method of continuous winding glass steel pipe with impact resistance and strain corrosion resistance

[0050] Including raw material preparation, continuous winding of FRP lining layer and FRP structural layer, curing and setting, cutting;

[0051] Specific steps are as follows:

[0052] Step 1, raw material preparation: prepare respectively the fiberglass inner liner compound and the fiberglass structure layer material, for subsequent use;

[0053] Among the above, the preparation method of the FRP inner liner compound is: mix the flexible unsaturated polyester resin, auxiliary agent, initiator, cyclohexanone peroxide dibutyl phthalate paste, and stir fully for 3 minutes to obtain FRP Inner liner mixture; wherein, the flexible unsaturated polyester resin molecular chain contains tetrahydrophthalic anhydride groups; flexible unsaturated polyester resin, auxiliary agent, initiator, dibutyl peroxide cyclohexanone phthalate paste The mass ratio is 1...

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Abstract

The invention discloses a preparation method of an impact-resistant strain-corrosion-resistant continuously-wound glass steel tube. The preparation method comprises the following steps of: preparing raw materials, continuously winding a glass steel lining layer and a glass steel structure layer, curing and shaping, and cutting. According to the impact-resistant strain-corrosion-resistant continuously-wound glass steel tube, a flexible unsaturated polyester resin lining is selected, a molecular chain contains tetrahydrophthalic anhydride groups, the elongation at break is up to 20% or above, the impact resistance is good, the lining is not easy to crack during external impact, and the strain level of 1.1% can reach 1000 hours or above during a sulfuric acid strain corrosion test.

Description

technical field [0001] The invention relates to the technical field of glass steel pipes, in particular to a preparation method for impact-resistant and strain-corrosion-resistant continuous winding glass steel pipes. Background technique [0002] FRP pipe is a resin-based composite pipe with high strength, corrosion resistance, smooth pipe wall, and excellent hydraulic performance. It has a wide application background in municipal construction such as water supply and drainage pipeline projects. However, at present, ordinary FRP pipes use isophthalic unsaturated polyester resin or vinyl resin as the lining resin, and its elongation at break is usually only about 3%, and the highest is 5%. Easy to crack, cause damage or leak failure. Moreover, the fixed-length winding process is often used in the manufacturing process of FRP pipes. Due to the discontinuity of production, the process is not easy to control, the production efficiency is low, and the quality of the pipes is un...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/32B29C70/54C08L67/06C08K13/02C08K3/36C08K3/26C08K5/14B29L23/00
CPCB29C70/32B29C70/545B29L2023/22C08K3/26C08K3/36C08K5/14C08K13/02C08K2003/265C08K2201/011C08L2203/18C08L67/06
Inventor 吴琪琪王磊郭文真章爱美傅锐南吴俊铭陈森鑫吴文露王伟强连海斌
Owner 福建安东实业有限公司
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