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Reaction type polysiloxane flame-retardant coating and preparation method thereof

A polysiloxane and flame retardant coating technology, applied in the field of reactive polysiloxane flame retardant coating and its preparation, can solve the problem of uneven composition, reduce the mechanical properties of the matrix, and does not mention the influence of the flame retardant coating. Coating and wood adhesion and other issues, to achieve the effect of excellent flame retardant performance, good flame retardant performance and strong adhesion

Active Publication Date: 2017-05-24
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The additive type requires a large amount of addition to have a flame retardant effect, and this will bring the following problems: first, the flame retardant migrates to the surface after a period of time to make the composition uneven; second, the combination of the additive type and the matrix is ​​relatively weak. Brittle, which creates weak points in the matrix and reduces the mechanical properties of the matrix
In addition, the patent does not mention the effect of flame retardant coating on the mechanical properties of wood, the adhesion between coating and wood

Method used

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  • Reaction type polysiloxane flame-retardant coating and preparation method thereof
  • Reaction type polysiloxane flame-retardant coating and preparation method thereof
  • Reaction type polysiloxane flame-retardant coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Mix 5 parts of poly(methylhydrogensiloxane-dimethylsiloxane copolymer), 6*10 -5 Parts of Karstdet catalyst and 50 parts of isopropanol were added to a four-necked flask equipped with a reflux condenser, a thermometer, magnetic stirring, and an inert atmosphere, and the temperature was raised to 70°C and then stirred at a constant temperature for 15 minutes; after the temperature was raised to 100°C, the 15 parts of isocyanate propyltriethoxysilane and 15 parts of isopropanol in the pressure funnel were added dropwise into the four-necked flask, and the constant temperature reaction was continued for 6 hours; within 2 hours, 35 parts of allyl triethoxysilane in the constant pressure funnel Glycidyl ether and 20 parts of isopropanol were added dropwise in a four-necked flask, and the constant temperature reaction was continued for 6 hours; the solvent and unreacted substances were removed by distillation under reduced pressure to obtain the flame retardant intermediate API...

Embodiment 2

[0091] 10 parts of 1,3,5,7-tetramethylcyclotetrasiloxane, 4*10 -5 Parts of Speier catalyst and 60 parts of toluene solvent were added to a four-necked flask equipped with a reflux condenser, a thermometer, magnetic stirring, and an inert atmosphere, and the temperature was raised to 70°C and then stirred at a constant temperature for 10 minutes; after the temperature was raised to 95°C, the 10 parts of isocyanate propyltriethoxysilane and 15 parts of toluene in the funnel were added dropwise into the four-necked flask, and the reaction was continued at constant temperature for 8 hours; within 2 hours, 30 parts of allyl glycidyl ether in the constant pressure funnel Add 35 parts of toluene dropwise into a four-necked flask, and continue the constant temperature reaction for 7 hours; remove the solvent and unreacted substances by distillation under reduced pressure to obtain the flame retardant intermediate API; all the flame retardant intermediates obtained in the previous step ...

Embodiment 3

[0095] Mix 6 parts of polymethylhydrogen siloxane, 7*10 -5 Parts of Speier catalyst and 70 parts of toluene solvent were added to a four-necked flask equipped with a reflux condenser, a thermometer, magnetic stirring, and an inert atmosphere, and the temperature was raised to 70°C and then stirred at a constant temperature for 10 minutes; after the temperature was raised to 100°C, the 10 parts of 3-isocyanatopropyl trimethoxysilane and 15 parts of toluene in the funnel were added dropwise into the four-necked flask, and the constant temperature reaction was continued for 7 hours; 50 parts of allyl glycidyl ether in the constant pressure funnel were added within 3 hours Add 20 parts of toluene dropwise into a four-neck flask, continue the constant temperature reaction for 5 hours; remove the solvent and unreacted substances by distillation under reduced pressure to obtain the flame retardant intermediate API; all the flame retardant intermediate API obtained in the previous step...

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Abstract

The invention discloses a reaction type polysiloxane flame-retardant coating and a preparation method thereof, and belongs to the technical field of flame-retardant coatings. The reaction type polysiloxane flame-retardant coating consists of a silane coupling agent, ammonium polyphosphate, a film-forming agent, a polysiloxane flame retardant, a wetting agent and ethanol. The film-forming agent and the silane coupling agent of the reaction type polysiloxane flame-retardant coating have the function of film forming simultaneously, the silane coupling agent and the synthesized polysiloxane flame retardant can be also acted with each other, and the silane coupling agent and the flame retardant can implement microencapsulation on the ammonium polyphosphate, and can be also reacted, so that the reaction type polysiloxane flame-retardant coating of a spatial cross-linked net structure can be prepared, the coating adopts ethanol as a solvent, and the raw materials of the whole system are environmental-friendly reagents which can do no harm to the environment and operators; the coating is a reaction type coating, is high in flame retardancy efficiency, and can be deformed together with a substrate without dropping, the limit oxygen index LOI of polypropylene can be up to 31.3% and can be qualified in UL-94 V0 tests, and the mechanical property of the substrate can be barely affected.

Description

technical field [0001] The invention relates to a reactive polysiloxane flame retardant coating and a preparation method thereof, belonging to the technical field of flame retardant coatings. Background technique [0002] In modern life, fires caused by improper fire control occur frequently, which lead to huge loss of life and property. However, a large number of commonly used materials are flammable, so it is imperative to endow these materials with flame retardancy to reduce the probability of fire occurrence. [0003] Usually, in terms of flame retardant treatment methods, there are flame retardants blended with the matrix, preparation of intrinsic flame retardant polymers, and application of high polymer flame retardant coatings. Intrinsic polymers are difficult to prepare, their types are small, and their applications are limited. The additive type requires a large amount of addition to have a flame retardant effect, and this will bring the following problems: first,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D129/14C09D7/12C09D5/18C08G77/388C08G77/38C08G77/395C08G77/12
CPCC08G77/12C08G77/38C08G77/388C08G77/395C08K2201/014C08L2201/02C08L2205/025C08L2205/03C09D7/61C09D7/63C09D129/14C09D183/04C08L29/14C08K2003/323C08K5/544C08L83/04C08K5/5435
Inventor 晏泓赵智垒赵晶李生虎卜颖宏靳晴
Owner TAIYUAN UNIV OF TECH
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