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An epoxy resin-based composite structure inspection well cover and its preparation method

A technology of epoxy resin and composite structure, which is applied in the field of mineral materials and municipal building materials, can solve the problems of affecting the fluidity of resin, affecting the molding process, and cumbersome preparation process, and achieves the advantages of reducing shrinkage performance, reducing dosage, and large interface area Effect

Active Publication Date: 2021-03-19
JILIN JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inspection well cover is structurally divided into 6 layers, and the preparation process is cumbersome
In addition, the inorganic non-metallic material used is heavy calcium carbonate, and the particles are irregular. If the dosage is too large, it will affect the fluidity of the resin, thereby affecting the molding process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0048] A method for preparing an inspection manhole cover with an epoxy resin-based composite structure, comprising the following steps:

[0049] Step 1: Check the preparation of the bottom layer of the well cover structure: weigh 100 parts of E44 epoxy resin, 5-10 parts of industrial absolute ethanol, 30-40 parts of T31 curing agent, 0.1-0.2 parts of PP fiber, 5 parts of liquid nitrile rubber, 400-600 parts of quartz fine sand, mixed evenly according to the above sequence, poured into the inspection manhole cover mold, and its thickness is 1 / 2 of the embedded depth of the inspection manhole cover;

[0050] Step 2: the laying of basalt fiber mesh cloth: on the bottom layer of the structure prepared in step 1, lay the basalt fiber mesh cloth whose diameter is 3 / 4 of the inspection manhole cover diameter, and roll the fiber mesh cloth so that it is consistent with the structure The bottom layer has good contact and improves the bonding performance of the layer.

[0051] Step 3:...

Embodiment 1

[0054]Step 1: Check the preparation of the bottom layer of the well cover structure: weigh 100Kg of E44 epoxy resin, 5Kg of industrial absolute ethanol, 30Kg of T31 curing agent, 0.1Kg of PP fiber, 5Kg of liquid nitrile rubber, and 400Kg of fine quartz sand, and mix them evenly in the above order , Pour it into the manhole cover mold, and lay epoxy mortar with a thickness of 30mm and a diameter of 500mm as the bottom layer of the manhole cover structure.

[0055] Step 2: Laying of basalt fiber mesh cloth: On the bottom layer of the structure prepared in step 1, with the center of the inspection manhole cover as the center, lay basalt fiber mesh cloth with a diameter of 375 mm, and roll the fiber mesh cloth to make it It has good contact with the bottom layer of the structure and improves the bonding performance.

[0056] Step 3: Check the preparation of the surface layer of the well cover structure: weigh 100Kg of E44 epoxy resin, 5Kg of industrial absolute ethanol, 30Kg of T3...

Embodiment 2

[0062] Step 1: Check the preparation of the bottom layer of the well cover structure: weigh 100Kg of E44 epoxy resin, 6Kg of industrial absolute ethanol, 35Kg of T31 curing agent, 0.15Kg of PP fiber, 5Kg of liquid nitrile rubber, and 400Kg of fine quartz sand, and mix them evenly in the above order , Pour it into the manhole cover mold, and lay epoxy mortar with a thickness of 30mm and a diameter of 500mm as the bottom layer of the manhole cover structure.

[0063] Step 2: Laying of basalt fiber mesh cloth: On the bottom layer of the structure prepared in step 1, with the center of the inspection manhole cover as the center, lay basalt fiber mesh cloth with a diameter of 375 mm, and roll the fiber mesh cloth to make it It has good contact with the bottom layer of the structure and improves the bonding performance.

[0064] Step 3: Check the preparation of the surface layer of the well cover structure: weigh 100Kg of E44 epoxy resin, 6Kg of industrial absolute ethanol, 35Kg of ...

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Abstract

The invention relates to an epoxy resin-based composite structure manhole cover and a preparation method thereof. The polymer-based manhole cover is prepared by using a composite structure of an epoxyresin structural layer and a basalt fiber reinforcement layer, PP fiber is added to a structural bottom layer, diatomaceous earth and fly ash are added to epoxy resin mortar of a structural surface layer, and basalt fiber mesh cloth is added between the structural bottom layer and the structural surface layer, so that the bending resistance and tensile strength of the manhole cover are increased.The mechanical properties of the epoxy resin mortar are enhanced by adding the diatomaceous earth and fly ash, so that the shrinkage of the epoxy resin mortar is reduced; due to a porous structure ofthe diatomaceous earth and a large interfacial area between the diatomaceous earth and the epoxy resin matrix, the interfacial bonding force between the epoxy resin-based layer and the reinforcing material is improved, and since most of the fly ash is of a spherical shape, fluidity of epoxy resin is facilitated when molding of the epoxy resin is performed, so that the dosage of a diluent is reduced, and the compressive strength of the epoxy resin mortar is enhanced. The epoxy resin-based composite structure manhole cover is particularly suitable for multiple varieties of manhole covers of heavy roads.

Description

technical field [0001] The invention relates to a mineral material and a municipal building material, especially an epoxy resin-based composite structure inspection manhole cover and a preparation method thereof Background technique [0002] With the rapid development of municipal construction, the number of large-scale and wide-ranging municipal engineering facilities is increasing day by day. A variety of underground pipeline inspection manhole covers are spread all over the streets and alleys, including telecommunications, electricity, gas, heat, fire protection, sanitation and other purposes. For a long time, the inspection manhole covers used in municipal public facilities in our country are generally produced by cast iron, and its material limitations, processing energy consumption, and environmental pollution have brought troubles to project cost, environment, and energy. Especially in the current phenomenon of frequent damage and reselling, it not only destroys the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/14E02D29/14
CPCC04B26/14C04B2111/00379C04B2111/00612E02D29/1472C04B16/0633C04B14/06C04B24/2652C04B24/02C04B2103/0068C04B14/08C04B18/08
Inventor 金玉杰雒锋
Owner JILIN JIANZHU UNIVERSITY