CN115010931B - Flame-retardant smoke-suppressing silicone oil and preparation method and application thereof - Google Patents

Flame-retardant smoke-suppressing silicone oil and preparation method and application thereof Download PDF

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CN115010931B
CN115010931B CN202210644237.8A CN202210644237A CN115010931B CN 115010931 B CN115010931 B CN 115010931B CN 202210644237 A CN202210644237 A CN 202210644237A CN 115010931 B CN115010931 B CN 115010931B
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silicone oil
flame
suppressing
retardant smoke
epoxy
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CN115010931A (en
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徐卫兵
史旭
王哲
周正发
马海红
任凤梅
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Hefei University of Technology
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Hefei University of Technology
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/38—Polysiloxanes modified by chemical after-treatment
    • C08G77/382—Polysiloxanes modified by chemical after-treatment containing atoms other than carbon, hydrogen, oxygen or silicon
    • C08G77/388—Polysiloxanes modified by chemical after-treatment containing atoms other than carbon, hydrogen, oxygen or silicon containing nitrogen
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
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  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Fireproofing Substances (AREA)
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Abstract

The invention provides a flame-retardant smoke-suppressing silicone oil, a preparation method and application thereof, and in particular relates to the field of modified silicone oil, wherein the flame-retardant smoke-suppressing silicone oil is prepared from epoxy silicone oil and dicyandiamide, and the preparation steps of the flame-retardant smoke-suppressing silicone oil are as follows: and dissolving the epoxy silicone oil and the dicyandiamide in a solvent, and reacting under the action of a catalyst to synthesize the flame-retardant smoke-suppressing silicone oil. According to the invention, dicyandiamide is grafted to two ends of the epoxy-terminated silicone oil, so that the flame retardance and smoke suppression performance of the epoxy-terminated silicone oil are improved, and the flame retardance and smoke suppression silicone oil prepared by the invention can be applied to the field of welding.

Description

Flame-retardant smoke-suppressing silicone oil and preparation method and application thereof
Technical Field
The invention relates to the field of modified silicone oil, in particular to flame-retardant smoke-suppressing silicone oil and a preparation method and application thereof.
Background
The polysiloxane material is widely applied to the industrial field due to the characteristics of excellent mechanical property, thermal property, electrical property, interface property and the like, and can be classified into silicone oil, silicone rubber, silicone resin and the like according to industrial products. The silicone oil has strong operability, various varieties, wide performance and wide application range.
During welding, a large amount of flame and smoke are generated, and the generated splash slag is adhered to two sides of a welding bead and is difficult to clean. The appearance of the product is affected, the welding quality is also affected, and the health of workers and the protection of the environment are also endangered. The silicon oil can be used as a splash-proof agent in welding, so that the generation of splashes is reduced, the silicon oil does not chemically react with metal, is not bonded, and is easy to clean. However, most of flame retardants belong to additive flame retardants, have poor compatibility with silicone oil, cannot exist in the silicone oil stably, and affect the flame retardance and smoke suppression performance of the silicone oil.
Disclosure of Invention
The invention aims to provide flame-retardant smoke-suppressing silicone oil, a preparation method and application thereof, wherein the flame retardance and smoke suppression of the modified silicone oil are improved by modifying the silicone oil.
In order to meet the technical purposes and related technical purposes, the invention provides flame-retardant smoke-suppressing silicone oil, which has the following structural formula:
wherein m is an integer greater than or equal to 0.
In one example of the flame retardant smoke suppressant silicone oil of the present invention, the flame retardant smoke suppressant silicone oil is prepared from an epoxy-terminated silicone oil and dicyandiamide.
In one example of the flame-retardant smoke-suppressing silicone oil of the invention, the preparation steps of the flame-retardant smoke-suppressing silicone oil are as follows: and dissolving the epoxy silicone oil and the dicyandiamide in a solvent, and reacting under the action of a catalyst to synthesize the flame-retardant smoke-suppressing silicone oil.
In one example of the flame retardant smoke suppressant silicone oil of the present invention, the epoxy value of the epoxy-terminated silicone oil is 0.5525mol/100g or less.
In one example of the flame-retardant smoke-suppressing silicone oil, the molar ratio of the epoxy groups in the epoxy-terminated silicone oil to the primary amino groups in the dicyandiamide is 1:0.1-1.5.
In one example of the flame-retardant smoke-suppressing silicone oil of the invention, the catalyst is one or more of 2,4, 6-tris (dimethylaminomethyl) phenol, sulfamic acid, zinc fluoroborate hydrate, aluminosilicate and Lewis acid.
In one example of the flame-retardant smoke-suppressing silicone oil, the addition amount of the catalyst is 0.05-0.25% of the sum of the mass of the epoxy-terminated silicone oil and the dicyandiamide.
In one example of the flame retardant smoke suppressant silicone oil of the present invention, the solvent is N, N-dimethylformamide.
The invention also provides a preparation method of the flame-retardant smoke-suppressing silicone oil, which comprises the following steps:
adding epoxy silicone oil, dicyandiamide and a catalyst into a solvent, stirring and dissolving, heating to 75-145 ℃, and reacting for 1-6 hours under the protection of nitrogen, thereby obtaining the flame-retardant smoke-suppressing silicone oil.
In an example of the preparation method of the flame-retardant smoke-suppressing silicone oil, the post-treatment steps of the flame-retardant smoke-suppressing silicone oil are as follows: distillation under reduced pressure, washing and drying.
In an example of the preparation method of the flame-retardant smoke-suppressing silicone oil, the reduced pressure distillation temperature is 85-95 ℃.
In an example of the preparation method of the flame-retardant smoke-suppressing silicone oil, the washing is to wash the product after reduced pressure distillation for 3-5 times by deionized water.
In an example of the preparation method of the flame-retardant smoke-suppressing silicone oil, the drying is vacuum drying, the drying temperature is 55-65 ℃, and the drying time is more than 5 hours.
The invention also protects the application of the flame-retardant smoke-suppressing silicone oil in the field of welding.
The flame-retardant smoke-suppressing silicone oil prepared by the invention grafts dicyandiamide on two ends of the epoxy-terminated silicone oil, when the flame-retardant smoke-suppressing silicone oil burns, dicyandiamide groups are decomposed and absorbed firstly to reduce the temperature, and N can be generated by decomposition of dicyandiamide groups 2 、NH 3 、CO 2 、H 2 Gaseous substances such as O, wherein N 2 Will be combined with O in the air 2 The nitrogen oxides are generated by the reaction, and the gaseous substances can dilute the concentration of oxygen in the combustion area, so that the flame retardant effect is achieved. Meanwhile, vapor generated by decomposition of dicyandiamide groups can absorb a large amount of heat, so that the temperature of the flame-retardant smoke-suppressing silicone oil is reduced, and the formation of soot is reduced, thereby achieving the flame-retardant smoke-suppressing effect. Dicyandiamide groups at the end of the flame-retardant smoke-suppressing silicone oil can reduce unbuckled degradation of a polysiloxane main chain caused by high temperature, so that the generation of micromolecular cyclosiloxane is reduced, and the generation of smoke is further reduced. The nitrogen generated by the decomposition of dicyandiamide groups reacts with silicon generated by the decomposition of a polysiloxane main chain to generate silicon-nitrogen compounds, so that the flame-retardant smoke-suppression silicone oil can be promoted to form carbon, and the generated carbon layer is more continuous and compact, so that the barrier property of the surface of the flame-retardant smoke-suppression silicone oil is better, the release of smoke is reduced, and the flame-retardant smoke-suppression performance is improved.
Drawings
FIG. 1 is a graph of the thermal weight loss of flame retardant smoke suppressant silicone oil of the present invention, examples 1 to 3, and end epoxy silicone oil;
FIG. 2 is a schematic combustion diagram of an epoxy silicone oil;
FIG. 3 is a schematic combustion diagram of an embodiment of the flame retardant smoke suppressant silicone oil of the present invention.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. It is also to be understood that the terminology used in the examples of the invention is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the invention. The test methods in the following examples, in which specific conditions are not noted, are generally conducted under conventional conditions or under conditions recommended by the respective manufacturers.
Where numerical ranges are provided in the examples, it is understood that unless otherwise stated herein, both endpoints of each numerical range and any number between the two endpoints are significant both in the numerical range. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs and to which this invention belongs, and any method, apparatus, or material of the prior art similar or identical to the methods, apparatus, or materials of the embodiments of the invention may be used to practice the invention.
The invention provides flame-retardant smoke-suppressing silicone oil which has the following structural formula:
wherein m is an integer greater than or equal to 0.
In one example of the flame retardant smoke suppressant silicone oil of the present invention, the flame retardant smoke suppressant silicone oil is prepared from an epoxy-terminated silicone oil and dicyandiamide.
In one example of the flame-retardant smoke-suppressing silicone oil of the invention, the preparation steps of the flame-retardant smoke-suppressing silicone oil are as follows: and dissolving the epoxy silicone oil and the dicyandiamide in a solvent, and reacting under the action of a catalyst to synthesize the flame-retardant smoke-suppressing silicone oil.
In one example of the flame retardant smoke suppressant silicone oil of the present invention, the epoxy value of the epoxy-terminated silicone oil is 0.5525mol/100g or less.
In one example of the flame-retardant smoke-suppressing silicone oil, the molar ratio of the epoxy groups in the epoxy-terminated silicone oil to the primary amino groups in the dicyandiamide is 1:0.1-1.5.
In one example of the flame-retardant smoke-suppressing silicone oil of the invention, the catalyst is one or more of 2,4, 6-tris (dimethylaminomethyl) phenol, sulfamic acid, zinc fluoroborate hydrate, aluminosilicate and Lewis acid.
In one example of the flame-retardant smoke-suppressing silicone oil, the addition amount of the catalyst is 0.05-0.25% of the sum of the mass of the epoxy-terminated silicone oil and the dicyandiamide.
In one example of the flame retardant smoke suppressant silicone oil of the present invention, the solvent is N, N-dimethylformamide.
The invention also provides a preparation method of the flame-retardant smoke-suppressing silicone oil, which comprises the following steps:
adding epoxy silicone oil, dicyandiamide and a catalyst into a solvent, stirring and dissolving, heating to 75-145 ℃, and reacting for 1-6 hours under the protection of nitrogen, thereby obtaining the flame-retardant smoke-suppressing silicone oil.
In an example of the preparation method of the flame-retardant smoke-suppressing silicone oil, the post-treatment steps of the flame-retardant smoke-suppressing silicone oil are as follows: distillation under reduced pressure, washing and drying. The purpose of the reduced pressure distillation is to remove the solvent from the reaction product, the purpose of the washing is to remove dicyandiamide and catalyst from the reaction product, and the purpose of the drying is to remove the liquid from the reaction product after the washing.
In an example of the preparation method of the flame-retardant smoke-suppressing silicone oil, the reduced pressure distillation temperature is 85-95 ℃.
In an example of the preparation method of the flame-retardant smoke-suppressing silicone oil, the washing is to wash the product after reduced pressure distillation for 3-5 times by deionized water.
In an example of the preparation method of the flame-retardant smoke-suppressing silicone oil, the drying is vacuum drying, the drying temperature is 55-65 ℃, and the drying time is more than 5 hours.
The invention also protects the application of the flame-retardant smoke-suppressing silicone oil in the field of welding.
In the preparation method of the flame-retardant smoke-suppressing silicone oil, the dosage of the solvent can be determined according to the specific dosage, as long as the dosage of the solvent can meet the requirements of dissolution and reaction. The amount of deionized water to be used in the washing is determined according to the amount of the reaction product, so long as the dicyandiamide and the catalyst in the reaction product can be removed.
The flame-retardant smoke-suppressing silicone oil prepared by the invention grafts dicyandiamide on two ends of the epoxy-terminated silicone oil, when the flame-retardant smoke-suppressing silicone oil burns, dicyandiamide groups are decomposed and absorbed firstly to reduce the temperature, and N can be generated by decomposition of dicyandiamide groups 2 、NH 3 、CO 2 、H 2 Gaseous substances such as O, wherein N 2 Will be combined with O in the air 2 The nitrogen oxides are generated by the reaction, and the gaseous substances can dilute the concentration of oxygen in the combustion area, so that the flame retardant effect is achieved. Meanwhile, vapor generated by decomposition of dicyandiamide groups can absorb a large amount of heat, so that the temperature of the flame-retardant smoke-suppressing silicone oil is reduced, and the formation of soot is reduced, thereby achieving the flame-retardant smoke-suppressing effect.
Dicyandiamide groups at the end of the flame-retardant smoke-suppressing silicone oil can reduce unbuckled degradation of a polysiloxane main chain caused by high temperature, so that the generation of micromolecular cyclosiloxane is reduced, and the generation of smoke is further reduced. The nitrogen generated by the decomposition of dicyandiamide groups reacts with silicon generated by the decomposition of a polysiloxane main chain to generate silicon-nitrogen compounds, so that the flame-retardant smoke-suppression silicone oil can be promoted to form carbon, and the generated carbon layer is more continuous and compact, so that the barrier property of the surface of the flame-retardant smoke-suppression silicone oil is better, the release of smoke is reduced, and the flame-retardant smoke-suppression performance is improved.
Example 1
The preparation method of the flame-retardant smoke-suppressing silicone oil comprises the following steps:
50g of epoxy silicone oil, 23.2558g of dicyandiamide and 0.1831g of 2,4, 6-tris (dimethylaminomethyl) phenol are taken, added into 100ml of N, N-dimethylformamide, stirred and dissolved, the mixed solution is heated to 125 ℃ and reacts for 2 hours under the protection of nitrogen to obtain a reactant, the reactant is distilled under reduced pressure at 90 ℃, the N, N-dimethylformamide in the reactant is removed, then 100ml of deionized water is used for washing the product after the distillation under reduced pressure, the washing is repeated for three times, the dicyandiamide and the 2,4, 6-tris (dimethylaminomethyl) phenol in the product are removed, and the washed product is placed in a vacuum drying box and dried in vacuum for 5 hours at 60 ℃ to obtain the flame-retardant smoke-suppressing silicone oil.
Example 2
The preparation method of the flame-retardant smoke-suppressing silicone oil comprises the following steps:
50g of epoxy silicone oil, 23.2558g of dicyandiamide and 0.1831g of 2,4, 6-tris (dimethylaminomethyl) phenol are taken, added into 100ml of N, N-dimethylformamide, stirred and dissolved, the mixed solution is heated to 125 ℃ and reacts for 4 hours under the protection of nitrogen to obtain a reactant, the reactant is distilled under reduced pressure at 90 ℃ to remove N, N-dimethylformamide in the reactant, then 100ml of deionized water is used for washing the product after the distillation under reduced pressure, the washing is repeated for three times, the dicyandiamide and the 2,4, 6-tris (dimethylaminomethyl) phenol in the product are removed, and the washed product is placed in a vacuum drying box and dried in vacuum for 5 hours at 60 ℃ to obtain the flame-retardant smoke-suppressing silicone oil.
Example 3
The preparation method of the flame-retardant smoke-suppressing silicone oil comprises the following steps:
50g of epoxy silicone oil, 23.2558g of dicyandiamide and 0.1831g of 2,4, 6-tris (dimethylaminomethyl) phenol are taken, added into 100ml of N, N-dimethylformamide, stirred and dissolved, the mixed solution is heated to 125 ℃ and reacts for 6 hours under the protection of nitrogen to obtain a reactant, the reactant is distilled under reduced pressure at 90 ℃, the N, N-dimethylformamide in the reactant is removed, then 100ml of deionized water is used for washing the product after the distillation under reduced pressure, the washing is repeated for three times, the dicyandiamide and the 2,4, 6-tris (dimethylaminomethyl) phenol in the product are removed, and the washed product is placed in a vacuum drying box and dried in vacuum for 5 hours at 60 ℃ to obtain the flame-retardant smoke-suppressing silicone oil.
Example 4
The preparation method of the flame-retardant smoke-suppressing silicone oil comprises the following steps:
adding 100g of epoxy silicone oil, 4.6512g of dicyandiamide and 0.05232g of sulfamic acid into 200ml of N, N-dimethylformamide, stirring for dissolution, heating the mixed solution to 75 ℃, carrying out heat preservation reaction for 1 hour under the protection of nitrogen to obtain a reactant, carrying out reduced pressure distillation on the reactant at 85 ℃, removing N, N-dimethylformamide in the reactant, washing the product after reduced pressure distillation with 100ml of deionized water, repeatedly washing for five times, removing dicyandiamide and sulfamic acid in the product, and placing the washed product in a vacuum drying box for vacuum drying at 55 ℃ for 6 hours to obtain the flame-retardant smoke-suppressing silicone oil.
Example 5
Adding 100g of epoxy silicone oil, 23.2558g of dicyandiamide and 0.1232g of aluminosilicate into 200ml of N, N-dimethylformamide, stirring for dissolution, heating the mixed solution to 100 ℃, carrying out heat preservation reaction for 3 hours under the protection of nitrogen to obtain a reactant, carrying out reduced pressure distillation on the reactant at 95 ℃, removing the N, N-dimethylformamide in the reactant, washing the product subjected to reduced pressure distillation with 100ml of deionized water, repeatedly washing four times, removing dicyandiamide and aluminosilicate in the product, and placing the washed product in a vacuum drying oven for vacuum drying at 65 ℃ for 5 hours to obtain the flame-retardant smoke-suppressing silicone oil.
Example 6
Adding 50g of epoxy silicone oil, 34.8837g of dicyandiamide and 0.2297g of Lewis acid into 200ml of N, N-dimethylformamide, stirring for dissolution, heating the mixed solution to 100 ℃, reacting for 5 hours under the protection of nitrogen to obtain a reactant, performing reduced pressure distillation on the reactant at 90 ℃, removing N, N-dimethylformamide in the reactant, washing the product subjected to reduced pressure distillation with 150ml of deionized water, repeatedly washing for three times, removing dicyandiamide and Lewis acid in the product, and placing the washed product in a vacuum drying box for vacuum drying at 60 ℃ for 5 hours to obtain the flame-retardant smoke-suppressing silicone oil.
Referring to fig. 1, fig. 1 is a graph showing the thermal weight loss of examples 1 to 3 of the flame retardant and smoke suppressant silicone oil of the present invention and the epoxy-terminated silicone oil. In the graph, curve a is the thermal weight loss curve of epoxy-terminated silicone oil, curve b is the thermal weight loss curve of the flame-retardant smoke-suppressing silicone oil prepared in example 1, curve c is the thermal weight loss curve of the flame-retardant smoke-suppressing silicone oil prepared in example 2, and curve d is the thermal weight loss curve of the flame-retardant smoke-suppressing silicone oil prepared in example 3. Wherein the reaction time of example 1 was 2 hours, the reaction time of example 2 was 4 hours, and the reaction time of example 3 was 6 hours.
As can be seen from FIG. 1, the epoxy-terminated silicone oil was completely burned at a temperature of 400℃and had no residue. The flame-retardant smoke-suppressing silicone oil prepared in examples 1 to 3 of the present invention has a thermal weight loss of less than that of the epoxy silicone oil at 250 ℃ to 800 ℃ and remains at a temperature of more than 800 ℃. The flame-retardant smoke-suppressing silicone oil disclosed by the invention has the advantages that the thermal weight loss is divided into two stages, the first stage is the decomposition of dicyandiamide groups, the second stage is the decomposition of a main chain of siloxane, and the content of dicyandiamide groups in a reaction product is increased along with the increase of the reaction time of the epoxy-terminated silicone oil and dicyandiamide, so that the thermal weight loss speed of the reaction product is increased along with the increase of the reaction time. The residue of the flame-retardant smoke-suppressing silicone oil after thermal weight loss increases along with the increase of the reaction time, which shows that the more the dicyandiamide group content is, the larger the carbon residue amount is, and the heat resistance is also improved.
Referring to fig. 2 and 3, fig. 2 is a schematic combustion diagram of an epoxy-terminated silicone oil, and fig. 3 is a schematic combustion diagram of an embodiment of the flame-retardant smoke-suppressing silicone oil according to the present invention. As can be seen from fig. 2, the combustion of the epoxy-terminated silicone oil is very intense and accompanied by the generation of a large amount of smoke, the color of which is black. As shown in figure 3, the flame of the flame-retardant smoke-suppressing silicone oil is very small, the smoke is very little, and the color of the smoke is white, which shows that the flame-retardant smoke-suppressing silicone oil has better flame-retardant and smoke-suppressing effects than epoxy silicone oil.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (10)

1. The flame-retardant smoke-suppressing silicone oil is characterized by having the following structural formula:
wherein m is an integer greater than or equal to 0.
2. The flame retardant smoke suppressant silicone oil of claim 1, wherein said flame retardant smoke suppressant silicone oil is prepared from an epoxy-terminated silicone oil and dicyandiamide;
the preparation method of the flame-retardant smoke-suppressing silicone oil comprises the following steps: and dissolving the epoxy silicone oil and the dicyandiamide in a solvent, and reacting under the action of a catalyst to synthesize the flame-retardant smoke-suppressing silicone oil.
3. The flame retardant smoke suppressant silicone oil of claim 2, wherein said epoxy-terminated silicone oil has an epoxy value of less than or equal to 0.5525mol/100g.
4. The flame-retardant and smoke-suppressing silicone oil according to claim 2, wherein the molar ratio of the epoxy groups in the epoxy-terminated silicone oil to the primary amino groups in the dicyandiamide is 1:0.1-1.5.
5. The flame retardant and smoke suppressant silicone oil according to claim 2, wherein said catalyst is one or more of 2,4, 6-tris (dimethylaminomethyl) phenol, sulfamic acid, zinc fluoroborate hydrate, aluminosilicate, lewis acid;
the solvent is N, N-dimethylformamide.
6. The flame-retardant and smoke-suppressing silicone oil according to claim 2, wherein the catalyst is added in an amount of 0.05 to 0.25% based on the sum of the mass of the epoxy-terminated silicone oil and the dicyandiamide.
7. A method for preparing the flame retardant smoke suppressant silicone oil according to any one of claims 1 to 6, comprising the steps of:
adding epoxy silicone oil, dicyandiamide and a catalyst into a solvent, stirring and dissolving, heating to 75-145 ℃, and reacting for 1-6 hours under the protection of nitrogen, thereby obtaining the flame-retardant smoke-suppressing silicone oil.
8. The method for preparing the flame-retardant smoke-suppressing silicone oil according to claim 7, wherein the post-treatment steps of the flame-retardant smoke-suppressing silicone oil are as follows: distillation under reduced pressure, washing and drying.
9. The method for preparing flame-retardant smoke-suppressing silicone oil according to claim 8, wherein the reduced pressure distillation temperature is 85-95 ℃, the washing is to wash the product after reduced pressure distillation with deionized water for 3-5 times, the drying is vacuum drying, the drying temperature is 55-65 ℃, and the drying time is more than 5 hours.
10. Use of a flame retardant smoke suppressant silicone oil according to any one of claims 1 to 6 in the field of welding.
CN202210644237.8A 2022-06-08 2022-06-08 Flame-retardant smoke-suppressing silicone oil and preparation method and application thereof Active CN115010931B (en)

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CN104024337A (en) * 2011-11-15 2014-09-03 株式会社日本触媒 Silane-containing composition, curable resin composition, and sealing material
CN113912850A (en) * 2021-10-29 2022-01-11 珠海三臻新材料科技有限公司 Dicyandiamide derivative, high-toughness epoxy resin and corresponding preparation method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4425447A (en) * 1982-04-12 1984-01-10 Saytech, Inc. Flame retardant polymer composition
JP2004099751A (en) * 2002-09-10 2004-04-02 Nippon Unicar Co Ltd Isocyanuric acid derivative group-containing organopolysiloxane, epoxy resin composition and semiconductor device
CN104024337A (en) * 2011-11-15 2014-09-03 株式会社日本触媒 Silane-containing composition, curable resin composition, and sealing material
CN113912850A (en) * 2021-10-29 2022-01-11 珠海三臻新材料科技有限公司 Dicyandiamide derivative, high-toughness epoxy resin and corresponding preparation method

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