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Polymer composite material manhole cover base and producing method thereof

A composite material and manufacturing method technology, applied in underwater structures, water conservancy projects, artificial islands, etc., can solve the problems of poor compressive strength and impact toughness of composite material bases, affecting the service life of complete sets of well covers, and edge collapse, etc. The effect of long service life, improved compressive strength and low cost

Inactive Publication Date: 2005-04-27
周虹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this product also has many disadvantages such as: the composite material base has poor compressive strength and impact toughness, and it will collapse or break after being rolled by a road roller and loaded by a vehicle, which affects the service life of the complete set of manhole covers.

Method used

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  • Polymer composite material manhole cover base and producing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Referring to Figures 1-5, a polymer composite manhole cover base, the inner wall of the composite shell 1 is coated with a polymer layer 2, and the composite shell 1 is put into a steel ring 3 and filled with a filler 4.

[0019] The manufacturing method of the above-mentioned polymer composite manhole cover base is as follows: use glass fiber reinforced unsaturated polyester resin molding compound as raw material, heat and high-pressure mold the composite material shell 1 through a steel mold, and the molding process conditions are: the temperature is 110 ° C, the pressure is 200kg / cm 2 , the curing time is 1min, the inner wall of the composite material shell 1 is treated with the polymer layer 2, the composite material shell 1 is placed upside down, and the steel ring 3 is put in it, and the slurry of the mixture of cement, skeleton material, sand and water is poured Put it into the composite material shell 1, manually tamp the gel to solidify for 48 hours, then use c...

Embodiment 2

[0021] Referring to Figures 1-5, a polymer composite manhole cover base, the inner wall of the composite shell 1 is coated with a polymer layer 2, and the composite shell 1 is put into a steel ring 3 and filled with a filler 4.

[0022] The manufacturing method of the above-mentioned polymer composite manhole cover base is as follows: use glass fiber reinforced unsaturated polyester resin molding compound as raw material, heat and high-pressure mold the composite material shell 1 through a steel mold, and the molding process conditions are: the temperature is 170 ° C, the pressure is 500kg / cm 2 , the curing time is 3 minutes, the inner wall of the composite material shell 1 is treated with the polymer layer 2, the composite material shell 1 is placed upside down, and the steel ring 3 is put in it, and the slurry of the mixture of cement, skeleton material, sand and water is poured Put it into the composite material shell 1, manually tamp the gel to solidify for 48 hours, then ...

Embodiment 3

[0024] Referring to Figures 1-5, a polymer composite manhole cover base, the inner wall of the composite shell 1 is coated with a polymer layer 2, and the composite shell 1 is put into a steel ring 3 and filled with a filler 4.

[0025] The manufacturing method of the above-mentioned polymer composite manhole cover base is as follows: use reinforced polypropylene as a raw material to manufacture a composite material shell 1 by injection molding, the inner wall of the composite material shell 1 is treated with a polymer layer 2, and a steel reinforcement ring 3 is placed in it, cement, Skeleton material, sand, water, and steel fiber slurry are added to the composite shell 1, the steel fiber accounts for 5% of the weight of the filler 4, tamped and scraped to make it smooth, and cured for 15 days to obtain a polymer composite inspection well Cover the base.

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Abstract

The present invention discloses one kind one manhole cover seat of composite material and its making process. The cover seat has casing made of composite material, coated with polymer material in the inside wall, and with embedded rib ring and stuffing. The composite material has relatively high impact-resisting toughness and high wear resistance and may be glass fiber reinforced unsaturated polyester resin or reinforced polypropylene material. The making process may be a hot molding or injecting one. The manhole cover seat of composite material is wear resistant, impact resistant and compression resistant, and has simple production process, long service life and low cost.

Description

1. Technical field [0001] The invention relates to a polymer composite inspection shaft cover base and a manufacturing method thereof, in particular to a glass fiber reinforced unsaturated polyester resin molding compound or reinforced polypropylene material composite inspection shaft cover base and a manufacturing method thereof. 2. Background technology [0002] Polymer composite manhole cover is more and more favored by the market because of its light weight and no recycling value. However, this product also has many disadvantages such as: the composite material base has poor compressive strength and impact toughness, and it will collapse or break after being rolled by a road roller and loaded by a vehicle, which affects the service life of the complete set of manhole covers. 3. Contents of the invention [0003] The object of the present invention is to provide a polymer composite inspection well cover base and a manufacturi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/14
Inventor 周虹
Owner 周虹