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Transparent flame-retardant organic silicon coating solution and preparation method thereof

A technology of coating liquid and silicone, applied in the direction of coating, etc., can solve the problems of flame retardancy and unsatisfactory use effect, affect the storage stability of rubber materials, and poor compatibility, so as to achieve good storage stability and improve storage stability good compatibility

Active Publication Date: 2011-02-16
GUANGZHOU BAIYUN CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of platinum compounds will limit other added components in the rubber compound. The inorganic filler will cause the components to decompose and generate gas, which will affect the storage stability of the rubber compound and the compatibility with the silicone coating liquid base material. Poor and difficult to disperse, so the flame retardancy and use effect of the room temperature vulcanized silicone rubber in the prior art are not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The transparent flame-retardant silicone coating solution of this embodiment consists of the following components and proportions by weight:

[0035] Methyl-terminated polydimethylsiloxane (1500cps) 40

[0036] Simethicone oil (1000cps) 10

[0037] Fumed silica 15

[0038] Functional Silicone 20

[0039] Silsesquioxane 0.8

[0040] Organic titanium chelate 0.2

[0041] Contains isopropoxy coupling agent 2

[0042] Methyltrimethoxysilane 1

[0043] Dialkyltin bis(β-diketone ester) 0.8

[0044] Solvent 30

[0045] The preparation method of the silicone coating solution of this embodiment is as follows:

[0046] a. Stir and mix methyl-terminated polydimethylsiloxane and organic filler at 120r / min to disperse evenly;

[0047] b. After drying and dehydrating in advance, add the inorganic filler in 3 times, stir and disperse for 30 minutes, then add the plasticizer and stir and disperse evenly at 140r / min again;

[0048] c. Add flame retardant additives and function...

Embodiment 2

[0055]The transparent flame-retardant silicone coating solution of this embodiment consists of the following components and proportions by weight:

[0056] Methyl-terminated polydimethylsiloxane (10000cps) 60

[0057] MDT silicone oil (40cps) 10

[0058] Fumed silica 25

[0059] Silicone 30

[0060] Silsesquioxane 1.5

[0061] Organic titanium chelate 0.5

[0062] Multifunctional ester compound 3

[0063] Methyltriethoxysilane 1.8

[0064] Polyalkoxy titanate 2.0

[0065] Solvent 40

[0066] The preparation method of the silicone coating solution of this embodiment is as follows:

[0067] a. Stir, mix and disperse the methyl-terminated polydimethylsiloxane and the organic filler at 150r / min;

[0068] b. After drying and dehydrating in advance, add the inorganic filler in 4 times, stir and disperse for 35 minutes, then add plasticizer and stir and disperse evenly at 160r / min again;

[0069] c. Add flame retardant additives and functional additives, stir and disperse a...

Embodiment 3

[0076] The transparent flame-retardant silicone coating solution of this embodiment differs from the first embodiment in that its composition is:

[0077] Silsesquioxane 1.2

[0078] Organic titanium chelate 0.4

[0079] The preparation method of the silicone coating solution of this embodiment is as follows:

[0080] a. Stir and mix methyl-terminated polydimethylsiloxane and organic filler at 160r / min to disperse evenly;

[0081] b. After drying and dehydrating the inorganic filler in advance, add in 5 times, stir and disperse for 40 minutes, then add plasticizer and stir and disperse evenly at 120r / min again;

[0082] c. Add flame retardant additives and functional additives, stir and disperse at 80r / min for 30min, add crosslinking agent and disperse for 15min;

[0083] d. Then add the catalyst and stir and disperse at 60r / min for 15min, add a solvent to adjust the viscosity of the coating solution, vacuumize and discharge to obtain the product.

[0084] The properties o...

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Abstract

The invention discloses transparent flame-retardant organic silicon coating solution which is prepared from the following components in parts by weight: 40-60 parts of methyl-terminated polydimethylsiloxane, 5-10 parts of plasticizer, 15-25 parts of inorganic filler, 20-30 parts of organic filler, 1-2 parts of fire retardant, 2-3 parts of functional additive, 1.0-1.8 parts of crosslinking agent, 0.8-2.0 parts of catalyst and 30-40 parts of solvent. The invention further discloses a preparation method of the transparent flame-retardant organic silicon coating solution. The organic silicon coating solution of the invention has the advantages of efficient fire resistance with flame-retardant level up to the requirement of UL-94V-0, good storage stability, good temperature tolerance, excellent electrical property, simple and feasible preparation method, easily dispersible materials and high transparency after being cured, thus fully meeting the requirement of circuit board coating protection in the actual solar photovoltaic and LED industries.

Description

technical field [0001] The invention relates to the technical field of polymer sealing materials, in particular to an organic silicon coating liquid and a preparation method thereof. Background technique [0002] Room temperature vulcanized silicone rubber (RTV), as a kind of silicone elastomer, has the characteristics of curing in situ without heating and pressure at room temperature, and is extremely convenient to use. It has been widely used as adhesives, sealants and potting, Materials such as molding and coating. The physical form of room temperature vulcanized silicone rubber is usually flowable fluid or viscous paste, with a viscosity between 100 and 1,000,000 centistokes, and its basic components include hydroxyl-terminated low molecular weight silicone rubber, reinforcing agent, functional filler, Cross-linking agent and catalyst, the basic process is to mix hydroxyl-terminated low-molecular-weight silicone rubber with reinforcing agent, dry and remove water, then ...

Claims

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Application Information

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IPC IPC(8): C09D7/12C09D183/04
Inventor 张利利邱浩孟
Owner GUANGZHOU BAIYUN CHEM IND
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