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Ketoxime-removal organosilicon sealant for LED (light-emitting diode) packaging and preparation method thereof

A LED encapsulation and deketoxime technology, applied in adhesives, adhesive additives, electrical components, etc.

Inactive Publication Date: 2015-12-02
BLUESTAR CHENGDU NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention aims to solve the problem of organic silicon materials used in LED packaging in the prior art, and provides a deketoxime type silicone sealant for LED packaging. The sealant machine has good comprehensive performance and is very suitable for LED potting

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A deketoxime type silicone sealant for LED packaging, comprising the following raw materials in parts by weight:

[0031] 80 parts of hydroxyl-terminated polydimethylsiloxane

[0032] 15 parts of crosslinking agent methyl tributanone oxime silane

[0033] 5 parts of crosslinking agent phenyltrimethoxysilane

[0034] 0.5 parts of stannous octoate

[0035] KH-5701.5 parts

[0036] KH-7921.5 copies

[0037] Dispersant 2 parts

[0038] Pigment chromium oxide 5 parts

[0039] Barium sulfate 30 parts

[0040] 30 parts of light calcium carbonate.

Embodiment 2

[0042] A deketoxime type silicone sealant for LED packaging, comprising the following raw materials in parts by weight:

[0043] 100 parts of hydroxyl-terminated polydimethylsiloxane

[0044] 25 parts of crosslinking agent methyl tributanone oxime silane

[0045] 15 parts of crosslinking agent phenyltrimethoxysilane

[0046] 5 parts stannous octoate

[0047] KH-570 2.5 copies

[0048] KH-7922.5 copies

[0049] 4 parts of dispersant

[0050] Pigment chromium oxide 9 parts

[0051] Barium sulfate 38 parts

[0052] 36 parts of light calcium carbonate.

Embodiment 3

[0054] A deketoxime type silicone sealant for LED packaging, comprising the following raw materials in parts by weight:

[0055] 90 parts of hydroxyl-terminated polydimethylsiloxane

[0056] 20 parts of crosslinking agent methyl tributanone oxime silane

[0057] 10 parts of crosslinking agent phenyltrimethoxysilane

[0058] Stannous octoate 2.75 parts

[0059] KH-5702 copies

[0060] KH-7922 copies

[0061] 3 parts of dispersant

[0062] Pigment chromium oxide 7 parts

[0063] Barium sulfate 34 parts

[0064] 33 parts of light calcium carbonate.

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Abstract

The invention relates to a ketoxime-removal organosilicon sealant for LED (light-emitting diode) packaging and a preparation method thereof, belonging to the technical field of organosilicon sealants. The organosilicon sealant comprises 80-100 parts of hydroxyl-terminated polydimethylsiloxane, 15-25 parts of crosslinking agent methyl tridiacetylmonoxime silane, 5-15 parts of crosslinking agent phenyltrimethoxy silane, 0.5-5 parts of stannous octoate, 1.5-2.5 parts of KH-570, 1.5-2.5 parts of KH-792, 2-4 parts of dispersing agent, 5-9 parts of pigment chromic oxide, 30-38 parts of barium sulfate and 30-36 parts of light calcium carbonate. By using the mixed crosslinking system composed of the ketoxime-removal crosslinking agent methyl tridiacetylmonoxime silane used as the main crosslinking agent and a small amount of dealcoholizing-type crosslinking agent phenyltrimethoxy silane, the single-component ketoxime-type organosilicon sealant has favorable comprehensive mechanical properties, and is very suitable for LED packaging.

Description

technical field [0001] The invention relates to a silicone sealant and a preparation method thereof. More specifically, the invention relates to a deketoxime type silicone sealant for LED packaging and a preparation method thereof, belonging to the technical field of silicone sealants. Background technique [0002] One-component room temperature vulcanized silicone sealant refers to mixing room temperature vulcanized silicone rubber and fillers, adding crosslinking agents, catalysts and other components, and under the condition of complete dehydration in a single-component form of airtight packaging, use and Storage, a type of silicone sealant product that can be cured into an elastomer by absorbing moisture in the air. According to the types of small molecules removed during condensation, they can be divided into deacetic acid type, deketoxime type, acetone type, deamidation type, deamination type and dealcoholization type. Deketoxime type silicone sealant is widely used b...

Claims

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Application Information

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IPC IPC(8): C09J183/06C09J11/06C09J11/04H01L33/56
Inventor 毛云忠曹先军王凤德赵奕崔晓静高川刘咏梅
Owner BLUESTAR CHENGDU NEW MATERIALS
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