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Preparation method of street lamp heat-conducting sealant

A sealant and street lamp technology, applied in heat exchange materials, chemical instruments and methods, adhesives, etc., can solve problems such as street lamp damage, and achieve the effects of improving thermal conductivity, improving distribution form, and excellent mechanical properties

Inactive Publication Date: 2020-12-01
马鞍山吉祥光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the street lamp bears a large load without taking protective measures for the street lamp, it is very easy to cause damage to the street lamp

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Preparation of organosilicon-modified vinyl ester resin: In parts by weight, add 83 parts of cyclohexanone and 12 parts of n-butanol into a reaction kettle equipped with a thermometer and a stirrer, start the stirrer, and heat in a water bath To 50°C, add 1 part of sodium acrylamido isopropyl sulfonate, after it is completely dissolved, add 0.4 part of sodium 1-propenyl-2-hydroxyalkane sulfonate, 0.8 part of tetraisopropyl titanate, naphthenic acid 0.3 part of bismuth, 56 parts of bisphenol A epoxy resin, slowly add 30 parts of aminopropyltrimethoxysilane dropwise after 8 minutes of heat preservation, after the dropwise addition, stir and react for 2 hours, and then spin evaporate to remove cyclohexanone and n-butanol to obtain Silicone-modified epoxy resin, then add 0.5 parts of N, N-dimethylaniline, 36 parts of methacrylic acid, under nitrogen atmosphere, heat up to 95°C and stir for 1 hour, then continue to heat up to 120°C, continue to stir for 2 hours, and react Th...

Embodiment 2

[0021] Preparation of polyurethane-modified vinyl ester resin: vacuum dehydrate the polymer polyol at 125°C for 1 hour; add diisocyanate, stir for 1 hour at a temperature of 80°C and a vacuum pressure of -0.06MPa; add a catalyst, React for 1h at a temperature of 85°C and a reaction pressure of 0.03MPa; add a polymerization inhibitor and vinyl ester resin, stir for 2h at a temperature of 60°C and a reaction pressure of 0.08MPa, and analyze the NCO group with an infrared spectrometer Content, when the peak of NCO disappears completely, stop heating reaction, obtain polyurethane modified vinyl ester resin; The mol ratio of polymer polyol, diisocyanate and vinyl ester resin in described polyurethane modified vinyl ester resin is: 1:1.4:1, the catalyst and the polymerization inhibitor each account for 0.1‰ of the weight of the polyurethane modified vinyl ester resin; the polymer polyol includes polyether ester diol and polystyrene polyol in a mass ratio of 1:1 The first step of the...

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Abstract

The invention belongs to the technical field of high polymer materials, and particularly relates to a preparation method of a street lamp heat-conducting sealant, and the prepared street lamp heat-conducting sealant has excellent flame-retardant and heat-conducting effects and good stability, is environment-friendly, does not contain VOC organic volatile matters and has repairability, the heat-conducting sealant does not influence normal maintenance of street lamp electronic components, circuit boards and the like, and the sealant has favorable binding power for metals, plastics, glass lamp materials and the like, can be hardened at normal temperature, is suitable for manual or mechanical casting, has excellent insulation, sealing, moisture resistance, water resistance, shock resistance and dust resistance for electronic, mechanical and other components, can resist spark discharge occasionally generated by street lamp electronic elements, is insulated and non-conductive, and does not influence the normal work of the electronic circuit.

Description

technical field [0001] The invention belongs to the technical field of adhesives, in particular to a method for preparing heat-conducting sealant for street lamps. Background technique [0002] Street lamp heat conduction sealant is liquid before it is cured and has fluidity. The viscosity of the glue varies according to the material, performance and production process of the product. After the sealant is completely cured, its use value can be realized. After curing, it can play the role of waterproof, moisture-proof, dust-proof, insulation, heat conduction, confidentiality, corrosion resistance, temperature resistance, and shock resistance. Street lamp heat conduction sealant requires good high temperature resistance and very strong low temperature resistance. Regardless of high temperature environment or low temperature environment, the heat conduction sealant for street lamps will not be damaged or other problems. Street lamp heat conduction sealants are also required t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J163/10C09J11/04C09J11/08C09K5/14
CPCC08K2003/222C08K2003/2227C08K2003/2282C08L2203/20C08L2205/035C09J11/04C09J11/08C09J175/14C09K5/14C08L63/10C08L33/02C08L79/02C08L1/286C08K13/06C08K7/08C08K3/24C08K3/34C08K3/22C08K3/2279
Inventor 唐子成
Owner 马鞍山吉祥光电科技有限公司
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