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Condensed type two-component pouring sealant for LED optical lens and preparation method thereof

An optical lens, condensation type technology, applied in the field of potting glue, can solve the problems such as the inability of the dense lens to be completely leveled, the potting glue and the lens are easy to loosen, and the thin layer curing takes a long time, and achieves a small shrinkage rate and is not easy to shrink. , good protective effect

Inactive Publication Date: 2016-05-18
GUANGDONG JIEGUO NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The defects of the existing condensation type silicone potting compound are: 1. It cannot defoam naturally within the operation time, and it cannot be completely leveled in the dense lens; 2. The low adhesion and large shrinkage rate cause the potting compound and The lens is easy to loose; 3. Deep curing or thin layer curing takes a long time and the production efficiency is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Prepare Component A

[0034] Preparation of semi-finished heavy calcium: in parts by mass (the same below), 100 parts of 1500mPa·s hydroxyl-terminated polysiloxane and 100 parts of 800 mesh heavy calcium carbonate are heated up while stirring, and the temperature reaches 120°C-150°C to start pumping Vacuum, maintain the temperature and vacuumize for 2 hours, then turn off the vacuum, and get semi-finished heavy calcium after cooling.

[0035] Preparation of semi-finished silica: Stir 100 parts of simethicone oil with a viscosity of 350mPa·s and 100 parts of precipitated silica evenly, and add 5 parts of hexamethyldisilazane and 1 part of deionized water while stirring, After adding the materials, raise the temperature to 80°C and maintain it for 2 hours, then raise the temperature to 180°C and maintain this temperature for 2 hours and vacuumize for 2 hours. After the vacuumizes, add 100 parts of hydroxyl-terminated polysiloxane with a viscosity of 1500mPa·s, stir quickl...

Embodiment 2

[0042] Prepare Component A

[0043] Preparation of processing fillers: in parts by mass (the same below), mix 100 parts of 1500mPa·s hydroxyl-terminated polysiloxane with 50 parts of silicon micropowder, 50 parts of quartz powder, and 20 parts of kaolin while stirring, and the temperature reaches 120°C- Start vacuuming at 150°C, maintain the temperature and vacuumize for 2 hours, then turn off the vacuum, and obtain the first treated packing after cooling.

[0044] Stir 80 parts of simethicone oil with a viscosity of 500mPa·s and 80 parts of precipitated silica evenly, add 10 parts of hexamethyldisilazane and 0.8 parts of deionized water while stirring, and raise the temperature to 80 ℃ and maintain for 2 hours, then raise the temperature to 180 ℃ and maintain the temperature for 2 hours to vacuumize, add 100 parts of hydroxyl-terminated polysiloxane with a viscosity of 3000mPa·s after the vacuumization, stir quickly and evenly, and obtain the second treatment filler after rap...

Embodiment 3

[0051] Prepare Component A

[0052] Preparation of processing filler: by mass parts (the same below), 100 parts of 1500mPa·s hydroxyl-terminated polysiloxane and 10 parts of light calcium carbonate, 10 parts of nano-calcium carbonate, 10 parts of barium sulfate, 10 parts of calcium sulfate, 10 parts of magnesium sulfate is heated up while stirring, the temperature reaches 120°C-150°C and the vacuum is turned on, the temperature is maintained for 2 hours and then the vacuum is turned off, and the first treatment filler is obtained after cooling.

[0053] Stir 100 parts of simethicone oil with a viscosity of 350mPa·s, 10 parts of mica powder, 10 parts of asbestos powder, 10 parts of aluminum oxide, 10 parts of aluminum hydroxide, and 10 parts of aluminum powder, and add 20 parts of Liujia while stirring base disilazane and 0.5 parts of deionized water, after adding the materials, raise the temperature to 80°C and maintain it for 2 hours, then raise the temperature to 180°C and m...

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Abstract

The invention provides a condensed type two-component pouring sealant for an LED optical lens and a preparation method thereof. The condensed type two-component pouring sealant comprises a component A and a component B in a mass ratio of (100:8)-(100:15), wherein the component A comprises the following components in parts by mass: 100 parts of hydroxyl-terminated polysiloxane, 50-200 parts of filler, 50-100 parts of plasticizer, 1-8 parts of pigment, 0.2-5 parts of surfactant and 0.1-1 part of curing accelerator; and the component B comprises the following components in parts by mass: 100 parts of plasticizer, 10-100 parts of crosslinking agent, 20-100 parts of chain extender, 0.01-1 part of catalyst and 5-50 parts of coupling agent. The condensed type two-component pouring sealant provided by the invention has the advantages of easiness in leveling, good antifoaming property, easiness in synchronous curing, low shrinkage, high elongation and good adhesion; and moreover, the production efficiency can be improved when the pouring sealant is used, a better protection effect can be realized for the LED optical lens and base material, and the service life of the LED lamp is prolonged.

Description

technical field [0001] The invention belongs to the technical field of potting glue, and in particular relates to a condensation-type two-component potting glue for LED optical lenses and a preparation method thereof. Background technique [0002] LED optical lens is mainly used for concentrating and guiding light of LED cold light source series products. It improves light efficiency by increasing optical reflection and reducing light loss. It is widely used in LED floodlights, wall washers, and underwater lights. LED optical lenses are highly transparent plastics, such as polycarbonate, polymethyl methacrylate, polystyrene, etc., which have no adhesion to lamp substrates (metal iron, aluminum alloy, polyvinyl chloride, etc.) The purpose of the device requires a layer of silicone potting glue to play the role of bonding, sealing, waterproof, and shockproof. [0003] The defects of the existing condensation type silicone potting compound are: 1. It cannot defoam naturally wi...

Claims

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Application Information

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IPC IPC(8): C09J183/06C09J183/04C09J11/04C09J11/06C09J11/08
CPCC09J183/06C08K2201/011C08K2201/014C08L2205/02C08L2205/025C08L2205/035C09J11/04C09J11/06C09J11/08
Inventor 陈永林
Owner GUANGDONG JIEGUO NEW MATERIAL CO LTD
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