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Interface treatment agent for glass reinforced plastic enhanced prestressed concrete cylinder pipe (PCCP) and application thereof

An interface treatment agent, prestressed steel technology, applied in the direction of adhesives, adhesive additives, modified epoxy resin adhesives, etc. Workability, improved flexibility, longer durability effects

Inactive Publication Date: 2018-02-23
温振刚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the current PCCP pipeline has the following disadvantages: in the process of spraying the outer protective layer, it is easy to form uncompacted parts, the protection of steel bars is not strict, forming cavities or hollows, knocking during transportation and installation, and hollowing damage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The interface treatment agent is composed of the following components, by weight percentage, including vinyl resin 75%, flexible resin 5%, styrene 3.5%, defoamer 0.5%, silane coupling agent 1%, fumed silica 2 %, 200 mesh aluminum hydroxide 5%, 70-100 mesh aluminum hydroxide 7%, accelerator 1%. The interface treatment agent plays the role of bonding the metal matrix and the polymer concrete, improving the integrity of the pipeline, and at the same time improving the compactness and flame retardancy of the pipeline, further preventing cracking and bursting of the pipeline, choosing o-phthalic flexible resin, flexible The addition of resin is to further solve the problem of dry cracking, and at the same time, it can further improve the fracture resistance. The combination of vinyl resin, flexible resin and styrene can form a bridge between the components of the interface treatment agent, thereby relieving internal stress, reducing the formation of cracks, avoiding potentia...

Embodiment 2

[0026] By weight percentage, get vinyl resin 70.2%, flexible resin 5%, styrene 4%, defoamer 1%, silane coupling agent 2%, fumed silica 3%, 200 mesh aluminum hydroxide 6%, 70-100 mesh aluminum hydroxide 8%, accelerant (1% cobalt liquid) 0.8%, spare.

[0027] Configure the interface treatment agent according to the above ratio, add 1.5% methyl ethyl ketone peroxide and stir evenly at a temperature of 30°C, and then roll-coat it on the outer surface of the prestressed steel cylinder of the PCCP pipeline to form an interface treatment layer, and then apply it on the surface of the interface treatment layer Spray a layer of 6-12 mesh quartz sand particles on the outer surface, and control 1 / 3 of the quartz sand particles to be embedded in the interface treatment layer, and the exposed 2 / 3 is fixed with polymer concrete.

Embodiment 3

[0029] By weight percentage, get vinyl resin 74.7%, flexible resin 4.5%, styrene 3.5%, defoamer 0.8%, silane coupling agent 1.5%, fumed silica 2.5%, 200 mesh aluminum hydroxide 4.5%, 7.5% aluminum hydroxide of 70-100 mesh, 0.5% accelerator (1% cobalt solution), set aside.

[0030] Configure the interface treatment agent according to the above ratio, add 1.2% methyl ethyl ketone peroxide and stir evenly at a temperature of 25°C, and then roll-coat it on the outer surface of the prestressed steel cylinder of the PCCP pipeline to form an interface treatment layer, and then apply it on the surface of the interface treatment layer Spray a layer of 6-12 mesh quartz sand particles on the outer surface, and control 1 / 3 of the quartz sand particles to be embedded in the interface treatment layer, and the exposed 2 / 3 is fixed with polymer concrete.

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Abstract

The invention provides an interface treatment agent for a glass reinforced plastic enhanced prestressed concrete cylinder pipe (PCCP), and belongs to the technical field of glass reinforced plastic enhanced PCCPs. The interface treatment agent is prepared from the following components in percentage by weight: 70 percent to 75 percent of vinyl resin, 3 percent to 5 percent of flexible resin, 3 percent to 4 percent of styrene, 0.5 percent to 1 percent of a de-foaming agent, 1 percent to 2 percent of a silane coupling agent, 1 percent to 3 percent of fumed silica, 4 percent to 6 percent of 200-mesh aluminum hydroxide, 6 percent to 8 percent of 70-mesh to 100-mesh aluminum hydroxide and 0.5 percent to 1 percent of an accelerant. The invention further discloses application and a method of the interface treatment agent to concrete pipelines. The interface treatment agent provided by the invention can be used for tightly combining a cylinder of the PCCP, cement concrete, glass reinforced plastic and polymer concrete, and the integrity and the strength of a polymer concrete pipeline are improved.

Description

technical field [0001] The invention belongs to the technical field of fiberglass-reinforced prestressed steel-tube concrete pipes, and relates to an interface treatment agent used in glass-reinforced prestressed steel-tube concrete pipes, and the application and method of the interface treatment agent in concrete pipes. The interface treatment agent of the invention can closely combine the prestressed steel cylinder of the PCCP pipe with the polymer concrete, and improve the integrity and strength of the glass fiber reinforced plastic reinforced prestressed steel cylinder concrete pipe. Background technique [0002] In the 1940s, Europe and the United States competed to start development, among which the United States is the country that produces and uses the most prestressed steel cylinder concrete pipes. So far, the United States has used prestressed steel cylinder concrete pipes for 28,000km, with a maximum diameter of 7600mm. More than 90% of urban water supply projects...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/10C09J201/00C09J11/06
CPCC08K2003/2227C08K2201/014C08L2203/18C09J11/06C09J163/10C08L101/00C08K13/02C08K3/22C08K3/36
Inventor 温振刚高晨晓吴青玉
Owner 温振刚
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