A kind of reactive polysiloxane flame retardant coating and preparation method thereof

A technology of polysiloxane and flame retardant coating, applied in the field of reactive polysiloxane flame retardant coating and its preparation, can solve the problem of reducing the mechanical properties of the matrix, the uneven composition, and the influence of the flame retardant coating is not mentioned. 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: 2019-05-17
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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  • A kind of reactive polysiloxane flame retardant coating and preparation method thereof
  • A kind of reactive polysiloxane flame retardant coating and preparation method thereof
  • A kind of reactive polysiloxane flame retardant coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] 5 parts of poly(methyl hydrogen siloxane-dimethyl siloxane 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 and magnetic stirring, and an inert atmosphere. The temperature was raised to 70 °C and then stirred at a constant temperature for 15 min; after the temperature was raised to 100 °C, the constant temperature 15 parts of isocyanatopropyl triethoxysilane and 15 parts of isopropanol in the pressure funnel were added dropwise to the four-necked flask, and the constant temperature reaction was continued for 6 hours; 35 parts of allyl in the constant pressure funnel were added within 2 hours. Glycidyl ether and 20 parts of isopropanol were added dropwise to the 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 inte...

Embodiment 2

[0091] 10 parts of 1,3,5,7-tetramethylcyclotetrasiloxane, 4*10 -5 Parts of Speier's catalyst and 60 parts of toluene solvent were added to a four-necked flask equipped with a reflux condenser, a thermometer and magnetic stirring, and an inert atmosphere, and the temperature was raised to 70 °C, followed by constant temperature stirring for 10 min; 10 parts of isocyanatopropyl triethoxysilane and 15 parts of toluene in the funnel were added dropwise to the four-necked flask, and the constant temperature reaction was continued for 8h; 30 parts of allyl glycidyl ether in the constant pressure funnel were added within 2h. Add 35 parts of toluene dropwise into the four-necked flask, and continue to react at constant temperature for 7 hours; remove the solvent and unreacted substances by vacuum distillation to obtain the flame retardant intermediate API; put all the flame retardant intermediates obtained in the previous step API, 35 parts of 9,10-dihydro-9-oxa-10-phosphaphenanthrene...

Embodiment 3

[0095] Mix 6 parts of polymethyl hydrogen siloxane, 7*10 -5 Parts of Speier's catalyst and 70 parts of toluene solvent were added to a four-necked flask equipped with a reflux condenser, a thermometer and magnetic stirring, and an inert atmosphere. The temperature was raised to 70 °C and then stirred at a constant temperature for 10 min; after the temperature was raised to 100 °C, the 10 parts of 3-isocyanatopropyltrimethoxysilane and 15 parts of toluene in the funnel were added dropwise to 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 into the four-necked flask dropwise, and continue to react at constant temperature for 5 hours; remove the solvent and unreacted substances by vacuum distillation to obtain the flame retardant intermediate API; all the flame retardant intermediate API obtained in the previous step , 30 part...

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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, resulting in huge loss of life and property. However, a large number of commonly used materials are flammable, so it is imperative to give these materials flame retardancy to reduce the probability of fire. [0003] Usually, in terms of flame retardant treatment, there are blending of flame retardant and matrix, preparation of intrinsic flame retardant polymer, application of polymer flame retardant coating, etc. 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, which will bring the following problems: first, the flame retardant migrates to the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/04C09D129/14C09D5/18C08G77/388C08G77/38C08G77/395C08G77/12
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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