阅读说明：本技术 阻燃纤维处理液及其制备方法和应用 (Flame-retardant fiber treatment fluid and preparation method and application thereof ) 是由 许文君 于 2019-09-18 设计创作，主要内容包括：本发明提供了一种阻燃纤维处理液,由如下重量份的成分组成：杂化硅氧烷预聚物100份,光引发剂0.5-3份,流平剂0.1-0.5份,第一溶剂200-500份,所述杂化硅氧烷预聚物由有机硅单体、烷氧基金属盐、蒸馏水和第二溶剂反应得到。并提供了阻燃纤维处理液的制备方法和应用。本发明提供的阻燃纤维处理液,通过有机硅单体、烷氧基金属盐在特定的水含量下缩聚,得到杂化有机硅树脂,将这种树脂对涤纶、丙纶等纤维表面处理并UV固化后,纤维表面可以形成特定厚度的杂化有机硅层,达到有效阻燃。且纤维经过杂化有机硅层包覆后,可提高其力学性能。(The invention provides a flame-retardant fiber treatment fluid which comprises the following components in parts by weight: 100 parts of hybrid siloxane prepolymer, 0.5-3 parts of photoinitiator, 0.1-0.5 part of flatting agent and 500 parts of first solvent, wherein the hybrid siloxane prepolymer is obtained by reacting organosilicon monomer, alkoxy metal salt, distilled water and second solvent. And provides a preparation method and application of the flame-retardant fiber treatment fluid. According to the flame-retardant fiber treatment solution provided by the invention, the organic silicon monomer and the alkoxy metal salt are subjected to polycondensation under a specific water content to obtain the hybrid organic silicon resin, and after the resin is used for carrying out surface treatment on fibers such as terylene and polypropylene fibers and carrying out UV curing, a hybrid organic silicon layer with a specific thickness can be formed on the surfaces of the fibers, so that effective flame retardance is achieved. And the mechanical property of the fiber can be improved after the fiber is coated by the hybrid organic silicon layer.)

1. The flame-retardant fiber treatment fluid is characterized by comprising the following components in parts by weight: 100 parts of hybrid siloxane prepolymer, 0.5-3 parts of photoinitiator, 0.1-0.5 part of leveling agent, and 500 parts of first solvent, wherein the water content of the first solvent is less than 0.05%, the hybrid siloxane prepolymer is obtained by pre-polymerizing an organic silicon monomer, an alkoxy metal salt, distilled water and a second solvent, the water content of the second solvent is less than 0.05%, and the weight ratio of the organic silicon monomer, the alkoxy metal salt, the distilled water and the second solvent in the hybrid siloxane prepolymer is 100: 2-30: 1-5: 100.

2. the flame-retardant fiber treatment liquid according to claim 1, characterized in that: the photoinitiator is one or a combination of a plurality of initiators of alpha-hydroxy ketones, acetophenones, benzils, acyl phosphorus oxides, diazonium salts, alkyl sulfonium salts, sulfonyloxy ketones and triaryl siloxane ether.

3. The flame-retardant fiber treatment liquid according to claim 1, characterized in that: the flatting agent is one or a combination of more of organic silicon flatting agents, acrylic esters flatting agents and fluorine flatting agents.

4. The flame-retardant fiber treatment liquid according to claim 1, characterized in that: the first solvent is one or more of ketones, esters, benzenes and ethers.

5. The flame-retardant fiber treatment liquid according to claim 1, characterized in that: the second solvent is one or more of ketones, esters, benzenes and ethers.

6. The flame-retardant fiber treatment liquid according to claim 1, characterized in that: the organic silicon is one or a combination of 2- (3, 4-epoxycyclohexyl) ethyltrimethoxysilane, 2- (3, 4-epoxycyclohexyl) ethyltriethoxysilane and 2- (3, 4-epoxycyclohexyl) ethyltripropoxysilane.

7. The flame-retardant fiber treatment liquid according to claim 1, characterized in that: the alkoxy metal salt is one or a combination of aluminum isopropoxide, titanium isopropoxide, aluminum ethoxide, titanium ethoxide and n-aluminum butoxide.

8. A method for preparing the flame-retardant fiber treatment fluid according to any one of claims 1 to 7, comprising the steps of:

(1) under the protection of nitrogen, adding a certain amount of organic silicon monomer, alkoxy metal salt, distilled water and a second solvent into a reactor, and reacting for 2-3 hours at 60-100 ℃ to obtain a hybrid siloxane prepolymer;

(2) and mixing the hybrid siloxane prepolymer obtained in the step with a photoinitiator, a flatting agent and a first solvent according to a specified ratio, fully stirring for reaction for 0.5-2 hours, irradiating by using a yellow light with the wavelength of more than 500nm during the reaction, and sealing and storing in a dark place after the reaction is finished.

9. The use of the flame-retardant fiber treatment solution obtained by the preparation method according to claim 8, characterized in that it is used for flame-retardant treatment of polyester fibers, spandex fibers and polypropylene fibers.

The technical field is as follows:

the invention relates to the technical field of flame retardants, and particularly relates to a flame-retardant fiber treatment fluid and a preparation method and application thereof.

Background art:

the terylene, the polypropylene fiber and other fibers have the advantages of light weight, good wear resistance and the like, and are widely applied to the life of people. But the flame-retardant polyester fiber is extremely easy to burn, and the application range of the flame-retardant polyester fiber is greatly limited, so that the flame-retardant polyester fiber has important significance for flame-retardant treatment of polyester fibers, polypropylene fibers and other fibers. The existing treatment method is to add a flame retardant serving as a comonomer into a polymer, which is often complex in process, or to directly perform surface flame-retardant post-treatment on fibers, and the method is to soak the fibers in a flame-retardant treatment solution and then finish the fibers on the surface of a fabric in a coating mode and the like.

The invention content is as follows:

the invention aims to overcome the defects of the prior art and provide a flame-retardant fiber treatment fluid, a preparation method and application thereof.

The technical scheme for realizing the purpose of the invention is as follows: the flame-retardant fiber treatment fluid comprises the following components in parts by weight: 100 parts of hybrid siloxane prepolymer, 0.5-3 parts of photoinitiator, 0.1-0.5 part of leveling agent, and 500 parts of first solvent, wherein the water content of the first solvent is less than 0.05%, the hybrid siloxane prepolymer is obtained by pre-polymerizing an organic silicon monomer, alkoxy metal salt, distilled water and a second solvent, the water content of the second solvent is less than 0.05%, and the weight ratio of the organic silicon, the alkoxy metal salt, the distilled water and the second solvent in the hybrid siloxane prepolymer is 100: 2-30: 1-5: 100.

preferably, the photoinitiator is one or a combination of a plurality of initiators selected from the group consisting of alpha-hydroxy ketones, acetophenones, benzils, acylphosphine oxides, diazonium salts, alkyl sulfonium salts, sulfonyloxy ketones, and triaryl siloxane ethers.

Preferably, the leveling agent is one or a combination of more of organic silicon leveling agents, acrylic esters leveling agents and fluorine leveling agents.

Preferably, the first solvent is one or more of ketones, esters, benzenes and ethers.

Preferably, the second solvent is one or more of ketones, esters, benzenes and ethers.

Preferably, the organosilicon monomer is one or more of 2- (3, 4-epoxycyclohexyl) ethyltrimethoxysilane, 2- (3, 4-epoxycyclohexyl) ethyltriethoxysilane and 2- (3, 4-epoxycyclohexyl) ethyltripropoxysilane.

Preferably, the metal alkoxide is one or more of aluminum isopropoxide, titanium isopropoxide, aluminum ethoxide, titanium ethoxide and aluminum n-butoxide.

The invention also provides a preparation method of the flame-retardant fiber treatment fluid, which is characterized by comprising the following steps of:

(1) under the protection of nitrogen, adding a certain amount of organic silicon monomer, alkoxy metal salt, distilled water and a second solvent into a reactor, and reacting for 2-3 hours at 60-100 ℃ to obtain a hybrid siloxane prepolymer;

(2) and mixing the hybrid siloxane prepolymer obtained in the step with a photoinitiator, a flatting agent and a first solvent according to a specified ratio, fully stirring for reaction for 0.5-2 hours, irradiating by using a yellow light with the wavelength of more than 500nm during the reaction, and sealing and storing in a dark place after the reaction is finished.

The invention also provides the application of the flame-retardant fiber treatment liquid, which can be used for flame-retardant treatment of polyester fibers, spandex fibers and polypropylene fibers.

The invention has the beneficial effects that:

the invention provides a flame-retardant fiber treatment fluid and a preparation method and application thereof. The resin with 4 main structures of-Si-O-M-O-Si-, -Si-OH and-M-OH is obtained by controlling the specific proportion of an organic silicon monomer, alkoxy metal salt and water, the resin is used for carrying out surface treatment on fibers such as terylene, polypropylene and the like and UV curing, the surface of the fibers can form a hybrid organic silicon layer with specific thickness, the hybrid organic silicon layer is heat-resistant and non-combustible, and-Si-OH-M-OH can be further subjected to polycondensation to generate H after the hybrid organic silicon layer is further heated₂And O, achieving effective flame retardance. After the fiber is coated by the hybrid organic silicon layer, the breaking strength, flame retardance, wear resistance and the like of the fiber are improved to different degrees, so that the fiber obtains excellent flame retardance and mechanical property, the required addition amount is small, the flame retardant effect is good, the cost is low, the popularization is easy, and the market prospect is very considerable.

The specific implementation mode is as follows:

the following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more readily understand the advantages and features of the present invention and to clearly define the scope of the invention.