Insulating material for cable sealing and preparation method thereof

A sealing material, insulation and sealing technology, applied in the direction of adhesive types, polyurea/polyurethane adhesives, adhesive additives, etc., can solve the corrosion damage of switchgear electrical components, line segment joint transmission mechanism, can not meet the safety of power system The need for prevention, the limited ability of rodent protection, etc., can improve the insulation performance and mechanical properties, improve the curing rate, and improve the thermal conductivity.

Inactive Publication Date: 2021-06-29
ZHEJIANG DISIWEI ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] After the cables pass through the mounting holes reserved at the bottom of the switchgear, it is difficult to avoid the problem of gaps between the cables and the mounting holes. In reality, due to the existence of gaps, moisture and sand outside the switchgear can easily enter through the gaps. The internal space of the switchgear will inevitably cause corrosion damage to the electrical components, line joints and transmission mechanisms in the switchgear after a long time
For the plugging materials with holes reserved for cables and holes pierced with cables, the traditional plugging method is still used, and cement mortar and soft flame-retardant materials based on inorganic and organic materials are used for plugging. This plugging method is Outdated, very non-standard, easily affected by external temperature, humidity and other factors, and bring greater safety hazards, and as the use time continues to increase, such plugging is also prone to aging, and its performance will continue to age decline, so that it cannot effectively prevent the occurrence of water leakage
Moreover, such a blocking method also has limited protection against rodents, and is easily damaged by animals similar to mice.
Such a blocking method obviously cannot meet the needs of the current power system for safety precautions.
At this time, a sealing material with good airtightness is needed to seal the gap, but the traditional sealing method has the following disadvantages: low production efficiency, poor reliability, unsightly appearance, poor airtightness and many other defects. Therefore, there is an urgent need for a fast, Stable gap-sealing material

Method used

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  • Insulating material for cable sealing and preparation method thereof
  • Insulating material for cable sealing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Preparation of 4-hydroxy-6-(trifluoromethyl)pyrimidine-2-thiol modified toluene diisocyanate trimer:

[0031] In a 100mL three-necked flask equipped with a stirrer and a thermometer, add toluene diisocyanate and butyl acetate at a ratio of 1:1, and then add 4-hydroxy-6-(trifluoromethyl)pyrimidine-2-thiol (with The mass ratio of toluene diisocyanate monomer is 1:0.9), then add dibutyltin dilaurate (the addition amount is 0.2% of the mass of toluene diisocyanate monomer), pass through nitrogen protection, stir and heat up to 70°C, and react for 1.5h Then add potassium acetate (add-on is 0.1% of toluene diisocyanate monomer quality), continue to react, every 1h detects the percentage content of free NCO group, when the weight percentage content of NCO reaches requirement, add immediately Benzoyl chloride, keep warm for 1h, cool down and discharge. The solid content was adjusted to 50%.

[0032] An insulating sealing material, comprising, A component, B component and C co...

Embodiment 2

[0042] The difference between the preparation of modified toluene diisocyanate trimer and Example 1 is that the mass ratio of 4-hydroxy-6-(trifluoromethyl)pyrimidine-2-thiol to toluene diisocyanate monomer is 1:1 .

[0043] An insulating sealing material, comprising, A component, B component and C component; Wherein, by weight:

[0044] Component A: 95 parts of modified toluene diisocyanate trimer, 12 parts of castor oil polyoxyethylene ether, 11 parts of polyoxypropylene glycol;

[0045] Component B: 5 parts of polyoxypropylene glycol, 3 parts of polyester polyol, 7 parts of propylene butane, 3 parts of dimethyl ether, 0.8 part of dodecyl sulfuric acid, 4 parts of nano-montmorillonite;

[0046] Component C: 1.1 parts of oleylamine polyoxyethylene ether, 4 parts of nano-sized silicon dioxide, 3 parts of fibrous nano-sized calcium carbonate whiskers, 0.2 parts of cuminyl phenyl phosphate, 0.4 parts of antimony trioxide, 0.3 parts of triaryl phosphate, 0.9 parts of silane coup...

Embodiment 3

[0049] The difference between the preparation of modified toluene diisocyanate trimer and Example 1 is that the mass ratio of 4-hydroxy-6-(trifluoromethyl)pyrimidine-2-thiol to toluene diisocyanate monomer is 1:1.1 .

[0050] An insulating sealing material, comprising, A component, B component and C component; Wherein, by weight:

[0051] Component A: 100 parts of modified toluene diisocyanate trimer, 14 parts of castor oil polyoxyethylene ether, 12 parts of polyoxypropylene glycol;

[0052] Component B: 7 parts of polyoxypropylene glycol, 5 parts of polyester polyol, 6 parts of propylene butane, 3 parts of dimethyl ether, 0.8 part of dodecyl sulfuric acid, 6 parts of nano-montmorillonite;

[0053] Component C: 0.9 parts of oleylamine polyoxyethylene ether, 6 parts of nano-sized silicon dioxide, 4 parts of fibrous nano-sized calcium carbonate whiskers, 0.1 part of cuminyl phenyl phosphate, 0.2 parts of antimony trioxide, 0.6 parts of triaryl phosphate, 0.7 parts of silane co...

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Abstract

The invention discloses an insulating material for cable sealing and a preparation method thereof, and relates to the technical field of adhesives. The preparation method of the insulation sealing material comprises the following steps: S1, mixing castor oil polyoxyethylene ether and polypropylene oxide glycol in parts by weight to obtain a product M; s2, uniformly mixing and stirring the product M and a component B to obtain a mixture N; S3, weighing micron-sized barium sulfate, oleylamine polyoxyethylene ether, nano-sized silicon dioxide, fibrous calcium carbonate whiskers, isophenylpropyl phenyl phosphate, antimony trioxide, triaryl phosphate, a silane coupling agent and epicatechin in parts by weight, and conducting mixing to obtain a mixture Q; and S4, uniformly mixing and stirring the mixture N and the mixture Q to obtain the insulating sealing material. The insulating material prepared by the preparation method disclosed by the invention has excellent insulating property, can keep good heat-conducting property, and is high in curing speed, outstanding in bonding strength, good in sealing property and excellent in flame-retardant effect; and the anti-aging capability is enhanced, and the service life is long.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and in particular relates to an insulating material used for cable sealing and a preparation method thereof. Background technique [0002] After the cables pass through the mounting holes reserved at the bottom of the switchgear, it is difficult to avoid the problem of gaps between the cables and the mounting holes. In reality, due to the existence of gaps, moisture and sand outside the switchgear can easily enter through the gaps. The internal space of the switchgear will inevitably cause corrosion damage to the electrical components, line segment joints and transmission mechanisms in the switchgear after a long time. For the plugging materials with holes reserved for cables and holes pierced with cables, the traditional plugging method is still used, and cement mortar and soft flame-retardant materials based on inorganic and organic materials are used for plugging. This plugging method is Ou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J11/04C09J11/06C08G18/79
CPCC09J175/14C09J11/04C09J11/06C08G18/794C08K2003/3045C08L2201/08C08L2201/02C08K13/04C08K3/36C08K7/08C08K5/523C08K3/2279C08K3/346C08K5/1545C08K3/30
Inventor 张庆军应兵荣方强方建峰吴志峰彭升球张能响
Owner ZHEJIANG DISIWEI ELECTRIC
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