阅读说明：本技术 一种防火耐燃的高性能涂料的制备方法 (Preparation method of fireproof and flame-retardant high-performance coating ) 是由 李子荣 王和政 王和山 王厚国 王和东 殷东楼 曹文强 张萍 张万霞 于 2020-07-09 设计创作，主要内容包括：本发明公开了一种防火耐燃的高性能涂料的制备方法,包括以下步骤：步骤一：原料的称取：共混乳液32-40份、改性硅藻粉10-20份、甘油松香脂5-10份、超细滑石粉6-10份、改性二氧化硅气凝胶4-10份、羧甲基纤维素1-3份、环氧大豆油1-3份。本发明的硅藻粉是一种硅质岩石粉,pH值呈中性、无毒,吸附性能强,容重轻,有优良的延伸性,较高的冲击强度、拉伸强度、撕裂强度等特性,并且其防晒性强、体质软轻是一种优质的填料,可应用于众多领域,其通过特定步骤改性后,所表现的各方面性能提高。(The invention discloses a preparation method of a fireproof and flame-retardant high-performance coating, which comprises the following steps: the method comprises the following steps: weighing raw materials: 32-40 parts of blended emulsion, 10-20 parts of modified diatom powder, 5-10 parts of rosin ester, 6-10 parts of superfine talcum powder, 4-10 parts of modified silicon dioxide aerogel, 1-3 parts of carboxymethyl cellulose and 1-3 parts of epoxidized soybean oil. The diatom powder is silicalite powder, has neutral pH value, no toxicity, strong adsorption performance, light volume weight, excellent extensibility, high impact strength, high tensile strength, high tearing strength and other characteristics, is a high-quality filler with strong sun protection performance and soft and light weight, can be applied to various fields, and is modified through specific steps to improve the performance of various aspects.)

1. A preparation method of a fireproof and flame-retardant high-performance coating is characterized by comprising the following steps:

the method comprises the following steps: weighing raw materials: 32-40 parts of blended emulsion, 10-20 parts of modified diatom powder, 5-10 parts of rosin ester, 6-10 parts of superfine talcum powder, 4-10 parts of modified silicon dioxide aerogel, 1-3 parts of carboxymethyl cellulose and 1-3 parts of epoxidized soybean oil;

step two, sequentially adding the blended emulsion, the modified diatom powder, the glycerin rosin ester and the superfine talcum powder into a high-speed stirrer, wherein the rotating speed is 1250-;

and step three, adding the mixture A prepared in the step two, the modified silica aerogel, the carboxymethyl cellulose and the epoxidized soybean oil into a high-speed mixer, wherein the rotating speed is 1550-.

2. The preparation method of the fireproof and flame-retardant high-performance coating as claimed in claim 1, wherein the blended emulsion is a styrene-acrylic emulsion and a silica microsphere emulsion in a weight ratio of (1-5): 1 and mixing.

3. The preparation method of the fireproof and flame-retardant high-performance coating as claimed in claim 2, wherein the blended emulsion is a styrene-acrylic emulsion and a silica microsphere emulsion in a weight ratio of 3: 1 and mixing.

4. The preparation method of the fireproof and flame-retardant high-performance coating according to claim 1, wherein the modification method of the modified diatom powder comprises the following steps: adding the diatom powder into a magnetic stirrer, stirring at the rotating speed of 65-75r/min for 25-35min, reacting at the temperature of 85-95 ℃, sequentially adding maleated rosin into the diatom powder, stirring at the rotating speed of 95-105r/min for 35-45min, finally adding a dispersing agent, and continuously stirring for 25-35min to obtain the modified diatom powder.

5. The method of claim 4, wherein the dispersant is an ammonium polycarboxylate dispersant.

6. The method for preparing the fireproof and flame-retardant high-performance coating according to claim 1, wherein the modified silica aerogel is compounded by taking silica aerogel as a matrix, nano cellulose as a reinforcement and tetraethoxysilane as a silicon source material.

7. The method as claimed in claim 1, wherein the particle size of the ultra-fine talc powder is 100-200 mesh.

8. The method for preparing a fire-retardant and fire-retardant high-performance coating according to claim 7, wherein the particle size of the superfine talc powder is 150 meshes.

Technical Field

The invention relates to the technical field of cable materials, in particular to a preparation method of a fireproof and flame-retardant high-performance coating.

Background

The paint is a chemical mixture capable of being covered on the surface of an object firmly and used for protection, decoration, marking and other special purposes. The book of coating technology which is relatively authoritative in the Chinese coating world is defined as follows: the paint is a material which can be coated on the surface of an object by different construction processes to form a continuous solid film with firm adhesion and certain strength. The film thus formed is generally called a coating film, also called a paint film or a coating. The coating belongs to organic chemical high molecular materials, and the formed coating belongs to a high molecular compound type. According to the modern popular classification of chemical products, the coating belongs to fine chemical products. Modern coatings are gradually becoming a multifunctional engineering material, an important industry in the chemical industry.

With the wide application of the coating in daily life, the requirement on the flame retardant performance of the coating is higher and higher, and the existing common coating has two main defects in fire safety: firstly, the material is inflammable. The existing common coatings belong to inflammables because of the existence of inflammable components and are extremely easy to catch fire. The fire extinguishing agent has high burning speed, is easy to cause fire, quickly spreads, and is easy to generate huge loss when the fire extinguishing agent is not put out in time. Secondly, a large amount of static electricity is generated. Due to the mutual friction between objects, static accumulation is easy to occur, and static damage occurs. Such as interference with the normal operation of computers and precision instruments, and in severe cases, can discharge electricity to produce sparks, thus causing explosion and fire. Especially, the coating applied to the kitchen appliances is more rare.

The existing coating has poor fireproof and flame-retardant effects, and needs further improvement treatment; thereby improving the application range of the coating.

Disclosure of Invention

The invention aims to provide a preparation method of a fireproof and flame-retardant high-performance coating, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the invention provides a preparation method of a fireproof and flame-retardant high-performance coating, which comprises the following steps:

the method comprises the following steps: weighing raw materials: 32-40 parts of blended emulsion, 10-20 parts of modified diatom powder, 5-10 parts of rosin ester, 6-10 parts of superfine talcum powder, 4-10 parts of modified silicon dioxide aerogel, 1-3 parts of carboxymethyl cellulose and 1-3 parts of epoxidized soybean oil;

step two, sequentially adding the blended emulsion, the modified diatom powder, the glycerin rosin ester and the superfine talcum powder into a high-speed stirrer, wherein the rotating speed is 1250-;

and step three, adding the mixture A prepared in the step two, the modified silica aerogel, the carboxymethyl cellulose and the epoxidized soybean oil into a high-speed mixer, wherein the rotating speed is 1550-.

Preferably, the blending emulsion is a styrene-acrylic emulsion and a silicon dioxide microsphere emulsion according to the weight ratio (1-5): 1 and mixing.

Preferably, the blending emulsion is a styrene-acrylic emulsion and a silicon dioxide microsphere emulsion according to a weight ratio of 3: 1 and mixing.

Preferably, the modification method of the modified diatom powder comprises the following steps: adding the diatom powder into a magnetic stirrer, stirring at the rotating speed of 65-75r/min for 25-35min, reacting at the temperature of 85-95 ℃, sequentially adding maleated rosin into the diatom powder, stirring at the rotating speed of 95-105r/min for 35-45min, finally adding a dispersing agent, and continuously stirring for 25-35min to obtain the modified diatom powder.

Preferably, the dispersant is an ammonium polycarboxylate dispersant.

Preferably, the modified silica aerogel is formed by compounding silica aerogel serving as a matrix, nanocellulose serving as a reinforcement and ethyl orthosilicate serving as a silicon source material.

Preferably, the particle size of the superfine talcum powder is 100-200 meshes.

Preferably, the particle size of the superfine talc powder is 150 meshes.

Compared with the prior art, the invention has the following beneficial effects:

the diatom powder is silicalite powder, has neutral pH value, no toxicity, strong adsorption performance, light volume weight, excellent extensibility, high impact strength, high tensile strength, high tearing strength and other characteristics, is a high-quality filler with strong sun protection performance and soft and light weight, can be applied to various fields, and is modified through specific steps to improve the performance of various aspects; adding the diatom powder into a magnetic stirrer, wherein the stirring speed is 65r/min, the stirring time is 25min, the reaction temperature is 85 ℃, then sequentially adding maleated rosin into the diatom powder, the stirring speed is increased to 95r/min, the stirring time is 35min, finally adding a dispersing agent, and continuously stirring for 2min to obtain the modified diatom powder, wherein the fireproof and flame-retardant properties of the coating can be obviously improved by modifying the diatom powder.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.