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Phenolic plastic inspection well cover, and preparation method thereof

A phenolic plastic and inspection well technology, which is applied to artificial islands, underwater structures, buildings, etc., can solve the problems of easy detachment and separation of steel bars and concrete, poor consistency of tissue fiber direction, low mechanical strength and surface hardness, etc. The effect of good performance, good wear resistance and high mechanical strength

Inactive Publication Date: 2017-11-07
CHANGZHOU COLLEGE OF INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cast iron materials have high mechanical strength, high surface hardness, and good wear resistance, but they are easy to be stolen and cause traffic safety accidents; reinforced concrete has good compression and impact resistance, but is suitable for manual operation, and the steel bars and concrete are easy to fall off and separate and be damaged; rubber Or thermoplastic composite materials are easy to be processed by injection molding, which is convenient for mass production, but they are easy to be stolen because they can be recycled, and have low mechanical strength and surface hardness, and poor wear resistance. In addition, the wall thickness of inspection well covers is generally 20-30mm, diameter More than 600mm, large wall thickness manhole cover injection molding is easy to form shrinkage cavity, poor tissue compactness, and poor consistency of tissue fiber direction
It can be seen that there are certain restrictions and defects in the existing manhole covers for inspection wells.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Raw materials: 50 parts of thermosetting phenolic resin, 30 parts of glass fiber, 20 parts of cotton fiber, 10 parts of quartz sand, 1 part of graphite powder, and 0.5 part of catalyst; 3 layers of glass fiber mesh are set in the well cover.

[0038] The preparation of glass fiber mesh is made of glass balls as raw materials, which are melted at a high temperature of 1600 ° C and formed by wire drawing. The thickness of the sheet glass fiber is 10 microns, the width is 3 mm, and the length is 50 mm to 600 mm; The glass fiber is woven into a sheet glass fiber mesh with a spacing of 5mm, and is alkalized.

[0039] Preparation of thermosetting phenolic resin. Formaldehyde and phenol are prepared in a molar ratio of 1:1.1 to form a thermosetting phenolic resin solution. The model is T861 phenolic resin plastic.

[0040] Glass fiber preparation, using glass balls as raw materials, melting at a high temperature of 1600 ℃, and drawing process to form glass fiber monofilame...

Embodiment 2

[0053] (1) Raw materials: 55 parts of thermosetting phenolic resin, 35 parts of glass fiber, 25 parts of cotton fiber, 15 parts of quartz sand, 1.5 parts of graphite powder, 0.8 part of catalyst; 4 layers of glass fiber mesh are set in the well cover.

[0054] The preparation of glass fiber mesh is made of glass balls as raw materials, which are melted at a high temperature of 1600 ° C and formed by wire drawing. The thickness of the sheet glass fiber is 20 microns, the width is 3 mm, and the length is 50 mm to 600 mm; The glass fiber is woven into a sheet glass fiber net with a spacing of 8mm, and is alkalized.

[0055] Preparation of thermosetting phenolic resin. Formaldehyde and phenol are prepared in a molar ratio of 1:1.3 to form a thermosetting phenolic resin solution. The model is T861 phenolic resin plastic.

[0056] Glass fiber preparation, using glass balls as raw materials, melting at a high temperature of 1600 ° C, and drawing process to form glass fiber monofilame...

Embodiment 3

[0069] (1) Raw materials: 60 parts of thermosetting phenolic resin, 40 parts of glass fiber, 30 parts of cotton fiber, 20 parts of quartz sand, 2 parts of graphite powder, 1 part of catalyst; 5 layers of glass fiber mesh are set in the well cover.

[0070] The preparation of glass fiber mesh is made of waste glass as raw material through high temperature 1600 ℃ melting and drawing process to form sheet glass fiber. The thickness of sheet glass fiber is 30 microns, the width is 3 mm, and the length is 60 mm to 600 mm; The glass fiber is woven into a sheet glass fiber net with a spacing of 8mm, and is alkalized.

[0071] Preparation of thermosetting phenolic resin, the thermosetting phenolic resin solution is prepared from formaldehyde and phenol in a molar ratio of 1:1.5, and the model is T871 phenolic resin plastic.

[0072] Glass fiber preparation, using waste glass as raw material, melted at a high temperature of 1600 ℃, and drawn into a glass fiber monofilament, the diamete...

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Abstract

The invention discloses a phenolic plastic inspection well cover, and a preparation method thereof. The phenolic plastic inspection well cover is prepared via moulding processing of the below raw materials using a hot pressing mould. The raw materials comprise 50 to 60 parts of phenolic resin, 30 to 40 parts of glass fiber, 20 to 30 parts of cotton fiber, 10 to 20 parts of quartz sand, 2 to 5 parts of graphite powder, and 0.5 to 1 part of a catalyst. The phenolic plastic inspection well cover is provided with 2 to 5 layers of glass fiber net; moulding processing is carried out using a phenolic plastic inspection well cover hot pressing mould; and the preparation method comprises steps of phenolic plastic raw material and filling material preparation, mixing and blending, charging, preheating, and high temperature hot pressing. The beneficial effects are that: the raw materials are common and cheap; thievery prevention is realized; the phenolic plastic inspection well cover is excellent in compactibility; tissue fiber direction uniformity is excellent; well cover mechanical strength and surface hardness are high; deformation is not easily caused; wear resistance, impact resistance, and shock resistance are excellent; and bending strength is high.

Description

technical field [0001] The invention relates to the technical field of plastic inspection wells, in particular to a phenolic plastic inspection well cover and a preparation method thereof. Background technique [0002] Plastic inspection wells in water supply and drainage or sewage treatment pipe network systems for municipal construction are generally composed of well covers, well chambers and well seats. The manhole cover enters the inspection well. Since the manhole cover of the inspection well is usually located on the road or the parking lot, it directly bears the rolling and impact of various types of trucks. Compared with the well chamber and well seat of the inspection well, the working conditions of the manhole cover are worse. Therefore, the manhole cover needs to have the characteristics of high mechanical strength, high surface hardness, not easy to deform, good wear resistance, high bending strength, good compression resistance and impact resistance. [0003] A...

Claims

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Application Information

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IPC IPC(8): C08L61/10C08L1/02C08K13/06C08K9/02C08K7/14C08K3/36C08K3/04B29C43/18E02D29/14B29K61/04
CPCC08L61/06B29C43/003B29C43/18B29C2043/182B29K2061/04C08K2201/003C08K2201/014C08L2205/16E02D29/1472E02D2300/0045C08L1/02C08K13/06C08K9/02C08K7/14C08K3/36C08K3/04
Inventor 谭文胜李洪达孔泳师彩云徐波
Owner CHANGZHOU COLLEGE OF INFORMATION TECH
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