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Plastics-steel composite manhole and preparation method thereof

A steel-plastic composite and manhole cover technology, which is applied to artificial islands, underwater structures, buildings, etc., to achieve the effects of low cost, good aging resistance, impact resistance and bearing capacity

Inactive Publication Date: 2008-04-16
孙宝波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to provide a steel-plastic composite manhole cover and its preparation method. The technical problem to be solved is that the polymer material is used as the main raw material and a small amount of inorganic material is compounded. Under the premise of low cost and convenient construction, its bearing capacity, temperature change adaptability and aging resistance are greatly improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] First, 70 parts of PVC (parts by weight, the same below), 5 parts of glass fiber, 2 parts of coupling agent, 1.5 parts of anti-aging agent, 10 parts of silicate, 1.5 parts of brightening agent, high-speed mixing, extrusion;

[0016] Then place 10 parts of the steel frame on the first layer of extruded material, and then lay the second layer of the same extruded material on the steel frame;

[0017] Finally, it is extruded with a 300-ton hydraulic press;

[0018] Among them, the upper and lower layers of extruded materials have basically the same thickness; the steel frame used is a network structure with a substantially uniform distribution made of steel bars.

Embodiment 2

[0020] 65 parts of PVC (parts by weight, the same below), 6 parts of glass fiber, 12 parts of steel frame, 2.5 parts of coupling agent, 1 part of anti-aging agent, 12 parts of silicate, 1.5 parts of brightening agent.

[0021] Others are the same as embodiment one.

Embodiment 3

[0023] 75 parts of PVC (parts by weight, the same below), 4 parts of glass fiber, 8 parts of steel frame, 1.5 parts of coupling agent, 3 parts of antiaging agent, 7 parts of silicate, and 1.5 parts of brightening agent.

[0024] Others are the same as embodiment one.

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PUM

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Abstract

The present invention discloses a composite metal-plastic well cover and a preparation method thereof. The well cover comprises, by the following wt percent, 65 percent-75 percent of PVC, 4 percent-6 percent of fiberglass, 8 percent-12 percent of steel frame, 1.5 percent-2.5 percent of coupling agent, 1 percent-3 percent of anti-aging agent, 0 percent-12 percent of silicate and 0 percent-2 percent of brightening agent. The impact resilience and bearing capacity is improved substantially. Taken lightweight well cover with a thickness of 4.5mm as an example, the breaking load of the well cover of the invention is not less than 340KN, according to the standard CJ / T121-2000.

Description

technical field [0001] The invention relates to a well cover and a preparation method thereof, in particular to a steel-plastic composite well cover and a preparation method thereof. The manhole cover is a manhole cover mainly used for various inspection wells on streets or residential pavement. Background technique [0002] Existing well covers mainly include metal well covers, cement well covers and silicon-plastic well covers. Among them, the metal manhole cover has the advantages of high strength and strong bearing capacity, but it is expensive, easy to rust, easy to be stolen, noisy, heavy, and not convenient for construction and maintenance. Although the cement manhole cover has the advantage of low cost, it also has the disadvantages of high noise and heavy weight, and its bearing capacity is relatively small. [0003] Silicon plastic manhole cover is a kind of polymer manhole cover that has emerged in recent years. It has the advantages of small specific gravity, l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K7/14B29C47/34E02D29/14B29C48/355
Inventor 孙宝波孙鹏俊
Owner 孙宝波