Neutral silicone fire-retardent sealing glue and its preparing method

A technology of fireproof sealant and manufacturing method, which is applied in the direction of chemical instruments and methods, adhesives, and other chemical processes, can solve the problems of fireproofing, flame retardancy and comprehensive performance, and achieve significant economic and social benefits, and convenient construction , the effect of low energy consumption

Inactive Publication Date: 2003-08-27
CHENGDU GUIBAO SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Put 200 kg of α, ω-dihydroxy polydimethylsiloxane, 45 kg of calcium carbonate, 150 kg of aluminum hydroxide, and 30 kg of iron oxide red into the vacuum kneader, at a temperature of 100 ° C, a vacuum degree of -0.06 ~-0.095MPa, dehydration and blending for 60 minutes, moved into a high-speed dispersion stirring tank; at room temperature, 15 kg of silicon dioxide, 3 kg of isopropyl titanate, 12 kg of methyltrimethoxysilane, Add 18 kg of dimethylpolydimethylsiloxane and 0.5 kg of dibutyltin dilaurate into the stirring tank, mix with the above-mentioned α, ω-dihydroxypolydimethylsiloxane mixture, and the vacuum degree is -0.06~ -0.095MPa, rotating speed 350rpm, carry out chemical reaction for 80 minutes, and obtain neutral silicone fireproof sealant product. The product and the performance test structure of the product in different states are shown in Table 1 and Table 2.

Embodiment 2

[0034] Put 200 kg of α, ω-dihydroxy polydiethylsiloxane, 50 kg of silicon micropowder, 130 kg of magnesium hydroxide, and 40 kg of basic zinc carbonate into the vacuum kneader, at a temperature of 120°C, and a vacuum degree of - 0.06~-0.095MPa, dehydration and blending for 90 minutes, transferred into a high-speed disperser; at room temperature, 10 kg of ethyl trimethoxysilane, 18 kg of hydrogenated castor oil and 1.8 kg of butyl titanate, α, ω-di Add 5 kg of ethyl polydimethylsiloxane and 1.0 kg of dibutyltin maleate into the stirring tank, mix with the above-mentioned α, ω-dihydroxypolydiethylsiloxane mixture, and the vacuum degree is -0.06~- 0.095MPa, rotating speed 360rpm, chemical reaction for 60 minutes to obtain a neutral silicone fireproof sealant product, the product and the performance test structure of the product in different states are shown in Table 1 and Table 2.

Embodiment 3

[0036] Put 150 kg of α, ω-dihydroxy polydiphenylsiloxane, 50 kg of activated clay, 20 kg of iron oxide red, and 140 kg of decabromodiphenyl ether into the vacuum kneader, at a temperature of 120 ° C, a vacuum degree of -0.06~-0.095MPa, dehydrated and blended for 180 minutes, moved into a high-speed disperser; at room temperature, mixed 15 kg of phenyltrimethoxysilane, 16 kg of polyethylene wax and ethyl acetoacetate chelate of titanate 1.8 kg, 13 kg of α, ω-diphenyl polydimethylsiloxane and 0.5 kg of tin oxide ethyl acetoacetate complex are added to the stirring tank, and mixed with the above-mentioned α, ω-dihydroxy polydiphenyl silicon The oxane mixture is mixed, the vacuum degree is -0.06~-0.095MPa, the rotation speed is 380rpm, and the chemical reaction is carried out for 60 minutes to obtain a neutral silicone fireproof sealant product. The performance test structure of the product and the product in different states is shown in Table 1 and Table 1. 2.

[0037] ...

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Abstract

The invention is a neutral silicone fireproof sealing gum and the making method. It adds alpha, omiga-dihydroxy polysiloxane 10-90 shares, filling 90-100 shares and flame resistting agent 10-90 shares to vacuum kneader, then at the temperature of 80-150 deg.C and the vacuum of -0.06-0.095 MPa, dehydrates and mixes for 60-100 minutes, and then moves to high-speed disperse blending kettle; at room temperature, adds silicon alkyl cross-linking agent 1-10 shares, touch-changing agent 1-10 shares, tackifier 1-10 shares, catalytic curing agent 0.1-5 shares and plasticizer 1-10 shares to the blending kettle to mix, and at the vacuum of -0.06-0.095 MPa and the speed of 100-600 rpm, and makes chemical reaction for 30-180 minutes to get the sealing gum. The main technical indexes: pendent degree according to GB/T 13477, zero, extrusion according to GB16776, 2.3-2.8 and flame retardance according to GB/T2048-1996, FV-zero level.

Description

1. Technical field [0001] The invention relates to a neutral silicone fireproof sealant and a manufacturing method thereof, and belongs to the field of synthesis and application of polymer building materials. 2. Background technology [0002] Silicone sealants have excellent weather resistance, heat resistance, ultraviolet rays and ozone aging properties, and are one of the first-choice materials for building sealants. With the wide application of building curtain walls, silicone sealant has been developed rapidly, high-grade building fire prevention, flame retardant sealing, cable penetration through the wall, flame retardant sealing and fixing after piercing, fireproof partition of building curtain wall (interlayer fireproof partition) ), as well as surfaces that need to be fire-retardant and sealed in interior decoration. Ordinary silicone sealants have achieved certain results in bonding performance; the "Neutral Silicone Stone Sealant and Its Manufacturing Method" disc...

Claims

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Application Information

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IPC IPC(8): C09J183/14C09K3/10
Inventor 李步春王有治卢麟
Owner CHENGDU GUIBAO SCI & TECH
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