Composite manhole cover for communication base station and preparation method of composite manhole cover

A technology for communication base stations and manhole covers, which can be used in infrastructure engineering, artificial islands, underwater structures, etc., can solve the problems of high dielectric constant and dielectric loss of manhole covers, prevent cracking in the sun, reduce dielectric constant, and lower The effect of dielectric constant

Active Publication Date: 2017-10-24
SHANGHAI ALLIED PLASTIC IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] If the signal in the communication pipeline under the inspection shaft can be drawn out to make the inspection shaft cover into an antenna transmitting base station, it will certainly meet the needs of short-distance communication technology to a certain extent, but the existing manhole cover has a high dielectric constant and dielectric loss.

Method used

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  • Composite manhole cover for communication base station and preparation method of composite manhole cover
  • Composite manhole cover for communication base station and preparation method of composite manhole cover
  • Composite manhole cover for communication base station and preparation method of composite manhole cover

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preparation example Construction

[0088] A preparation method for a composite manhole cover for a communication base station, comprising the following steps:

[0089] Step 1, weigh 40-95 parts of cyanate resin and 1-15 parts of toughening modifier and mix them, stir at 90-110°C for 20-30 minutes, and cool to room temperature naturally; Step 2, in step 1 Add an appropriate amount of acetone solvent to the resin solution and stir evenly, then add 1-20 parts of curing agent, 1-20 parts of reinforcing filler, 0.5-10 parts of low shrinkage additive, 0.01-2 parts of catalyst, 0.1-1 part of lubricant, 0.01- 1 part of UV absorber, 0.1-0.6 part of antioxidant, 0.1-0.5 part of pigment continue to stir at room temperature for 10-30min to obtain resin pre-preg; step 3, apply the resin pre-preg obtained in step 2 to low On the dielectric constant fiber cloth, control the fiber content to 5-60 parts, remove the acetone solvent in the resin, and obtain the prepreg; step 4, put the prepreg into the preheated manhole cover mol...

Embodiment 1

[0096] Step 1 Weigh 95 parts of bisphenol A cyanate resin, 1 part of polyhexafluorobutyl methacrylate-b-polyglycidyl methacrylate, mix them, stir at 90°C for 30 minutes, and cool to room temperature naturally;

[0097] Step 2 Add an appropriate amount of acetone solvent to the resin solution in step 1 and stir evenly, then add 5 parts of ethylenediamine, 10 parts of aluminum phosphate, 10 parts of PVAc, 0.01 part of aluminum acetylacetonate, 0.1 part of calcium stearate, 0.01 part of Phenyl o-hydroxybenzoate, 0.1 part of antioxidant 1010, and 0.1 part of titanium dioxide were stirred at room temperature for 10 minutes to obtain a resin prepreg;

[0098] Step 3: coating the resin prepreg obtained in step 2 on the D-glass fiber cloth, controlling the fiber content to 5 parts, and removing the acetone solvent in the resin to obtain a prepreg;

[0099] Step 4 Put the prepreg into the preheated manhole cover mold, mold and solidify to obtain a manhole cover made of high wave-transm...

Embodiment 2

[0103] Step 1 Weigh 60 parts of cyclopentadiene-type cyanate resin and 15 parts of polyhexafluorobutyl methacrylate-b-polyglycidyl methacrylate, mix them, stir at 100°C for 25 minutes, and cool to room temperature naturally ;

[0104] Step 2 Add an appropriate amount of acetone solvent to the resin solution in step 1 and stir evenly, then add 20 parts of m-phenylenediamine, 10 parts of nano-montmorillonite, 0.5 parts of PVAc-St, 1.5 parts of triethylamine, and 1 part of stearin Zinc acid, 0.5 part of 2-(2′-hydroxy-5′-methylphenyl) benzotriazole, 0.5 part of tris(1,2,2,6,6-pentamethylpiperidinyl) phosphite, 0.3 Part of antioxidant 1076, 0.3 part of antioxidant 168, 0.5 part of carbon black were stirred at room temperature for 20min to obtain a resin presoak;

[0105] Step 3: coating the resin prepreg obtained in step 2 on the quartz fiber cloth, controlling the fiber content to 40 parts, and removing the acetone solvent in the resin to obtain a prepreg;

[0106] Step 4 Put th...

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Abstract

The invention particularly relates to communication manhole covers and provides a composite manhole cover for a communication base station. The composite manhole cover comprises a cover which is prepared from the following ingredients in parts by weight: 40-95 parts of cyanate resin, 5-60 parts of low-dielectric-constant fibers, 1-15 parts of toughening modifier, 1-20 parts of curing agent, 1-20 parts of reinforcing filler, 0.5-10 parts of low-shrink additives, 0.01-2 parts of catalyst, 0.1-1 part of lubricant, 0.01-1 part of UV absorbent, 0.1-0.6 part of antioxidant and 0.1-0.5 part of pigments. According to the composite manhole cover for the communication base station, the manhole cover is prepared by adopting the cyanate resin, signals in a communication pipeline below an inspection shaft can be led out, and thus, the manhole cover can become an aerial transmitting base station; the cyanate resin has high mechanical properties, good heat resistance and low water absorption rate, meanwhile, the cyanate resin has most outstanding dielectric properties among unsaturated resins and has low dielectric constant and dielectric loss.

Description

technical field [0001] The invention relates to the field of inspection shaft covers, in particular to communication inspection shaft covers. Background technique [0002] There will be many underground pipelines in urban construction, such as sewers, underground gas pipelines, water pipelines, power pipelines, communication pipelines, national defense pipelines, etc. These pipelines must have an outlet leading to the ground every other section. Called the inspection well, the inspection well is a hole reserved for the maintenance of underground pipelines to facilitate the entry and exit of engineering personnel. There is a cover for covering the inspection well at the mouth of the inspection well, which is called the inspection well cover. [0003] If the signal in the communication pipeline under the inspection shaft can be drawn out to make the inspection shaft cover into an antenna transmitting base station, it will meet the needs of short-distance communication technol...

Claims

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Application Information

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IPC IPC(8): C08L79/04C08L53/00C08L31/04C08L77/10C08L23/06C08K13/04C08K7/10C08K7/14C08K7/28C08K5/098C08K3/34C08K5/134C08K5/526C08K3/04C08K5/524C08K5/3475C08K3/32C08K3/22C08K5/13C08K5/132C08K5/3492C08K5/372B29C70/42B29C70/54E02D29/14
Inventor 程亚东
Owner SHANGHAI ALLIED PLASTIC IND
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