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Formula of composite material cloud well lid

A technology of composite materials and manhole covers, which is applied in the formulation field of composite material cloud manhole covers, can solve the problems of complex process, manhole cover loss, and no covering at the wellhead, etc., and achieve the effect of simple process and process, light engineering design, and superior electrical performance

Inactive Publication Date: 2014-08-20
NINGBO WUBAINIAN INTERNET OF TINGS INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Sewer manhole covers are used in electric power and communication municipal projects. Traditional manhole covers are mostly made of cast iron, which is expensive and easy to rust. Often, the wellhead is not covered because the manhole cover is lost, especially at night, it is easy to cause passing vehicles and pedestrians. In order to overcome the defects of traditional cast iron manhole covers, manhole covers made of composite materials have appeared on the market, but this kind of composite manhole covers still use steel as the skeleton more or less, and most of the composite materials are glass, quartz and resin. , in the process of production, the process is relatively complicated, and the compressive strength of the formed manhole cover is not high, the bearing capacity is poor, and it is easy to be crushed under the rolling of heavy vehicles. This composite manhole cover is also very heavy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0016] The preparation method of composite material cloud manhole cover of the present invention comprises the steps:

[0017] A, granulation: the raw material of plastics and wood fiber is pulverized into wood fiber particle and sheet molding compound by pulverizer respectively;

[0018] b. Mixing: Add wood fiber particles and sheet molding compound into the reactor, close the gate and stir and mix at a stirring speed of 500-700n / min;

[0019] c. Fusion: After the mixing is complete, heat and stir the reactor, add auxiliary materials and calcium carbonate to the reactor during the heating and stirring process, and control the heating temperature at 150°C-220°C;

[0020] d. Extrusion: Transfer the fused mixture to a double roll machine for extrusion to form a non-fixed sheet-like semi-finished product;

[0021] e. Die-casting: Put the sheet-like semi-finished product into the mold of the sheet-shaped molding machine to flatten and die-cast;

[0022] f. Cooling: Take out the ...

Embodiment 1

[0024] Proportioning according to following parts by weight:

[0025] 60 parts by weight of wood fiber particles, 25 parts by weight of sheet molding compound, 9 parts by weight of calcium carbonate, 6 parts by weight of auxiliary materials,

[0026] The method for preparing a manhole cover comprises the steps:

[0027] A, granulation: the raw material of plastics and wood fiber is pulverized into wood fiber particle and sheet molding compound by pulverizer respectively, and takes out 60 relative weight parts of wood fiber particle, 25 relative weight parts of sheet molding compound;

[0028] b. Mixing: Add wood fiber particles and sheet molding compound into the reactor, close the gate and stir and mix at a stirring speed of 500-700n / min;

[0029] c, fusion: after the mixing is complete, the reactor is heated and stirred, and the auxiliary material of 6 parts by weight and the calcium carbonate of 9 parts by weight are added to the reactor during the process of heating and s...

Embodiment 2

[0034] 65 parts by weight of wood fiber particles, 20 parts by weight of sheet molding compound, 8 parts by weight of calcium carbonate, and 7 parts by weight of auxiliary materials. The preparation method is the same as that of Example 1.

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PUM

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Abstract

The invention relates to a formula of a composite material cloud well lid. The composite material comprises the following raw materials in weight portion: 50-70 portions of wood fiber particles, 20-50 portions of sheet molding compound, 5-15 portions of calcium carbonate, and 3-8 portions of accessories. The cloud well lid has few ingredients, strong bearing capacity, impact resistance, and no corrosion or fragmentation after molding, and mainly employs wood fiber and sheet molding compound, which are light and not bulky; and the production process is simple, green and environment-friendly.

Description

technical field [0001] The invention relates to a formula of a composite material cloud well cover. Background technique [0002] Sewer manhole covers are used in electric power and communication municipal projects. Traditional manhole covers are mostly made of cast iron, which is expensive and easy to rust. Often, the wellhead is not covered because the manhole cover is lost, especially at night, it is easy to cause passing vehicles and pedestrians. In order to overcome the defects of traditional cast iron manhole covers, manhole covers made of composite materials have appeared on the market, but this kind of composite manhole covers still use steel as the skeleton more or less, and most of the composite materials are glass, quartz and resin. , In the process of production, the process is relatively complicated, and the compressive strength of the formed manhole cover is not high, the bearing capacity is poor, and it is easy to be crushed under the rolling of heavy vehicles...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08K3/26C08F291/00C08F222/06
Inventor 庞海山
Owner NINGBO WUBAINIAN INTERNET OF TINGS INFORMATION TECH CO LTD