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Dealcoholized flame-retardant silicone sealant and preparation method thereof

A silicone sealant, dealcohol-type technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problem of non-standard flame retardant performance, non-flammability and self-extinguishing properties, poor storage stability, etc. problems, to achieve high flame retardant efficiency, improve the safety of use, and improve the effect of storage stability

Active Publication Date: 2014-06-18
JIANGSU TIANCHEN NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although ordinary silicone sealants have certain flame retardancy, they do not have flame retardancy and self-extinguishing properties.
Especially dealcoholized silicone sealant, which generally has the problem of substandard flame retardancy and poor storage stability, which greatly limits the wide application of dealcoholized silicone sealant

Method used

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  • Dealcoholized flame-retardant silicone sealant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In parts by mass, add 100 parts of trimethoxy-terminated polydimethylsiloxane with a viscosity of 20 Pa·s, 100 parts of nano-active calcium carbonate, 6 parts of silicon micropowder, and 100 parts of aluminum hydroxide into a vacuum kneader , keeping the temperature at 150°C, dehydrating and blending at -0.06MPa for 2 hours under a vacuum degree, grinding twice through a three-roller mill, and then transferred to a high-speed dispersion stirring tank to cool to room temperature to obtain the base material. At room temperature, methyl trimethoxy 6.5 parts of vinyl silane, 1.5 parts of vinyl trimethoxy silane, 0.8 parts of γ-aminopropyl triethoxy silane, 0.8 parts of glycidyl ether propyl trimethoxy silane, 1 part of calcium chloride, 20 parts of methyl silicone oil Add it into a high-speed dispersing and stirring tank to mix with the base material, stir for 1 hour under the conditions of a vacuum of -0.09MPa and a rotation speed of 250rpm, and then add bis(ethyl acetoacet...

Embodiment 2

[0024] In parts by mass, with a viscosity of 100 parts of methyl dimethoxy terminated polydimethylsiloxane of 20Pa·s, 60 parts of nano-active calcium carbonate, 15 parts of fumed white carbon black, 80 parts of magnesium hydroxide, Add 30 parts of glass micropowder into a vacuum kneader, keep the temperature at 105°C, dehydrate and blend at -0.09MPa for 2 hours, grind twice with a three-roll mill, then transfer to a high-speed dispersion stirring tank and cool to room temperature to obtain Base material, then mix 8 parts of methyltrimethoxysilane, 1 part of vinyltrimethoxysilane, 0.5 parts of isocyanate propyltriethoxysilane, β-aminoethyl-γ-aminopropyl Add 0.6 parts of trimethoxysilane and 20 parts of white oil into a high-speed dispersing and stirring tank to mix with the base material, stir for 1 hour under the condition of vacuum degree of -0.07MPa and rotation speed of 250rpm, and then add 0.7 parts of isopropyl titanate Stir for 1 hour under the conditions of vacuum degre...

Embodiment 3

[0026] In parts by mass, 100 parts of trimethoxy-terminated polydimethylsiloxane with a viscosity of 20 Pa·s, 100 parts of nano-active calcium carbonate, 10 parts of precipitated white carbon black, and 30 parts of basic zinc carbonate were added to the vacuum In the kneader, keep the temperature at 120°C, dehydrate and blend for 3 hours under a vacuum of -0.08MPa, grind twice through a three-roller mill, and then transfer to a high-speed dispersion stirring tank to cool to room temperature to obtain the base material, and then at room temperature. Add 8 parts of methyltrimethoxysilane, 1 part of isocyanate propyltriethoxysilane, 0.6 part of bis(γ-trimethoxysilylpropyl)amine, and 20 parts of methyl silicone oil into the high-speed dispersion stirring tank Mix with the base material, stir for 1 hour under the conditions of vacuum degree of -0.06MPa and rotation speed of 250rpm, then add 1 part of dibutyltin dilaurate, and stir for 1 hour under the conditions of vacuum degree of ...

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Abstract

The invention discloses dealcoholized flame-retardant silicone sealant and a preparation method thereof. The dealcoholized flame-retardant silicone sealant prepared by adopting the method has good flame-retardant property and good self-extinguishment property during use, the common problem that the flame retardant property of the dealcoholized flame-retardant silicone sealant cannot satisfy the standard and is poor during use is solved, and the wide application of the dealcoholized flame-retardant silicone sealant is greatly facilitated. At the same time, the sealant has very good storage stability and the storage duration is long and can reach 12 months.

Description

technical field [0001] The invention relates to a silicone sealant and a preparation method thereof, belonging to the technical field of sealing materials. Background technique [0002] Silicone sealants have excellent weather aging resistance, UV stability, compression resistance, shock resistance, moisture resistance, high and low temperature resistance, can maintain elasticity in harsh weather environments, do not tear and do not crack, etc. Therefore, it is widely used in construction, automobile, electrical and electronic, machinery, chemical industry and other industries. With the increase in the use of silicone sealants in densely populated areas such as high-rise buildings, hospitals, stations and large entertainment venues, fire safety issues have attracted more and more attention, which also makes the construction industry require the fire protection level of sealants Higher and higher. Although ordinary silicone sealants have certain flame retardancy, they do no...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/06C08L83/04C08K13/02C08K5/5425C08K5/5419C08K5/544C08K5/5435C08K3/26C08K3/34C08K3/22C08K3/36C08K3/40C09K3/10
Inventor 阚新宇王栋葆徐文俊徐古月倪晶晶
Owner JIANGSU TIANCHEN NEW MATERIALS
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