阅读说明：本技术 一种组合物、包含该组合物的防火涂料及其制备方法 (Composition, fireproof coating containing composition and preparation method of fireproof coating ) 是由 李云龙 于 2021-09-16 设计创作，主要内容包括：本发明涉及一种组合物、包含该组合物的防火涂料及涂料的制备方法,所述组合物中各组分质量配比包括：白色膨润土10-30份、磷酸二锑20-40份、磷酸铝5-25份、及氧化铝纤维25-45份；随着温度升高,膨润土和磷酸二锑会在700℃起逐渐起化学反应,在800-900度之间变成玻璃态粘稠物质,随着温度继续升高,该粘稠玻璃态物质会和磷酸铝和氧化铝纤维反应,生成耐高温的陶瓷材料。温度越高,各个组分反应的越充分,生成的陶瓷化物质强度越高。由于无机物导热性差,且膨润土、磷酸铝、磷酸二锑分解会放出挥发性组分,都会使生成的陶瓷化物质内部出现微孔,使得陶瓷化物质的导热性更差,这种结构将能有效的阻止热量传递。(The invention relates to a composition, a fireproof coating containing the composition and a preparation method of the coating, wherein the composition comprises the following components in parts by mass: 10-30 parts of white bentonite, 20-40 parts of antimony phosphate, 5-25 parts of aluminum phosphate and 25-45 parts of alumina fiber; as the temperature rises, the bentonite and the antimony phosphate gradually react at 700 ℃ to become glassy viscous substances at 900 ℃ of 800-. The higher the temperature, the more fully the components react and the higher the strength of the resulting ceramicized mass. Because the inorganic substance has poor thermal conductivity, and volatile components are released by the decomposition of bentonite, aluminum phosphate and antimony phosphate, micropores are formed in the generated ceramic substance, so that the thermal conductivity of the ceramic substance is poorer, and the structure can effectively prevent heat transfer.)

1. A composition for preparing a fire retardant coating, characterized in that: the composition comprises the following components in parts by mass: 10-30 parts of white bentonite, 20-40 parts of antimony phosphate, 5-25 parts of aluminum phosphate and 25-45 parts of alumina fiber.

2. A composition according to claim 1, wherein: the composition comprises the following components in parts by mass: 15-25 parts of white bentonite, 25-35 parts of antimony phosphate, 10-20 parts of aluminum phosphate and 30-40 parts of alumina fiber.

3. A composition according to claim 1, wherein: the particle size of each solid component in the composition is less than 10 microns.

4. A fire retardant coating comprising the composition of any one of claims 1 to 3, said fire retardant coating being an aqueous fire retardant coating characterized in that: the fireproof coating comprises a composition and a base material, wherein the mass ratio of the composition to the base material is 60-140: 100.

5. a fire retardant coating according to claim 4, wherein: the base material is acrylate emulsion.

6. A method of preparing a fire retardant coating as claimed in any one of claims 4 to 5, wherein: the method comprises the following steps:

1) weighing the components for preparing the composition according to the mass ratio for later use;

2) pouring the components in the step 1) into a vertical high-speed mixer for mixing to obtain a composition;

3) adding the composition into the acrylate emulsion for multiple times, and fully mixing and stirring for 15-25 min.

7. The method for preparing a fire retardant coating according to claim 6, wherein: the mixing speed of the neutral high-speed mixer in the step 2) is 500-700 r/min.

8. The method for preparing a fire retardant coating according to claim 6, wherein: the mixing time of the neutral high-speed mixer in the step 2) is 4-6 min.

Technical Field

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

Background

The fireproof coating is a functional coating for preventing fire and delaying fire spread. The fire-retardant coating is divided into water-based fire-retardant coating and solvent-based fire-retardant coating according to dispersion medium. The water-based fireproof coating not only has great use advantages in various aspects such as coating thickness, coating amount, bonding strength and the like, but also has low pollution degree to the environment and generates less organic volatile matters. However, the flame retardant materials in the prior art generally have the defects of difficult manufacture, unsatisfactory flame retardant effect and the like.

In the prior art, a patent CN112980270A discloses an electronic product water-based paint and a preparation method thereof, raw materials comprise 50-80 parts of polyacrylic resin emulsion, 5-10 parts of graphene, 10-20 parts of titanium dioxide and 4-8 parts of antimony phosphate flame retardant, wherein the graphene accounts for a large proportion, the existing graphene is expensive, one kilogram of the existing graphene is more than one thousand yuan, the cost of the raw materials is high, and the raw materials are difficult to obtain; and the flame retardant principle of the graphene material is that the graphene material depends on high stability, strong barrier effect and large specific surface area, so that the graphene material is favorable for flame retardance.

In the prior art, patent CN106633265A discloses a low-smoke halogen-free flame-retardant cable material, which comprises the preparation components of 50-60 parts of halogen-free flame-retardant polyolefin, 4-10 parts of silicon carbide, 3-8 parts of antioxidant, 2-6 parts of smoke suppressor, 5-8 parts of aluminum hydroxide, 3-6 parts of magnesium hydroxide, 1-3 parts of gamma-ray absorbent, 2-5 parts of zinc oxide, 3-7 parts of nano barium sulfate, 1-5 parts of heat stabilizer, 3-8 parts of calcium-zinc composite stabilizer, 2-4 parts of impact modifier, 1-2 parts of ultraviolet absorbent, 4-6 parts of carbon fiber, 3-5 parts of coupling agent, 0.3-0.8 part of anti-aging agent and 8-12 parts of modified filler. The core of the raw materials is aluminum hydroxide and magnesium hydroxide, the relative usage amount of the raw materials is large, the flame-retardant and smoke-suppression purpose is realized by the heat decomposition and heat absorption principle of metal hydroxide, aluminum phosphate and bentonite are only used as fillers and account for very few parts of the total composition, and even if the aluminum phosphate and the bentonite participate in sintering, the usage amount is too small, so that a hard ceramic body cannot be formed.

Disclosure of Invention

In view of the above-mentioned drawbacks and problems of the prior art, the present invention provides a composition, a fire retardant coating containing the same, and a method for preparing the same.

The technical scheme provided by the invention is as follows:

a composition for preparing a fire retardant coating, characterized in that: the composition comprises the following components in parts by mass: 10-30 parts of white bentonite, 20-40 parts of antimony phosphate, 5-25 parts of aluminum phosphate and 25-45 parts of alumina fiber.

Further, the composition comprises the following components in parts by mass: 15-25 parts of white bentonite, 25-35 parts of antimony phosphate, 10-20 parts of aluminum phosphate and 30-40 parts of alumina fiber.

Further, the particle size of each solid component in the composition is less than 10 microns; generally, the coating has a grinding process, the aim is to enable all components to be more conveniently dispersed, the particle size of the components used in the invention is finer, the aim is to omit a grinding process and facilitate the operation of subsequent coating preparation.

Further, the invention also provides a fire-retardant coating containing the composition, wherein the fire-retardant coating is a water-based fire-retardant coating, and is characterized in that: the fireproof coating comprises a flame retardant composition and a base material, wherein the mass ratio of the flame retardant composition to the base material is 60-140: 100.

further, the base material is acrylate emulsion.

Further, the invention also provides a preparation method of the fireproof coating, which is characterized by comprising the following steps: the method comprises the following steps:

1) weighing the components for preparing the composition according to the mass ratio for later use;

2) pouring the components in the step 1) into a vertical high-speed mixer for mixing to obtain a composition;

3) adding the composition into the acrylate emulsion for multiple times, and fully mixing and stirring for 15-25 min.

Further, the mixing speed of the neutral high-speed mixer in the step 2) is 500-700 r/min.

Further, the mixing time of the neutral high-speed mixer in the step 2) is 4-6 min.

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

1) the invention provides a composition, a fireproof coating containing the composition and a preparation method thereof, wherein each component for preparing the composition is an inorganic substance, can be dispersed in water without using an organic solvent and organic volatilization; meanwhile, the white bentonite plays a role of a suspending agent in water and can help other inorganic powder materials to be uniformly dispersed.

2) The invention provides a composition, a fireproof coating containing the composition and a preparation method of the fireproof coating.

3) The invention provides a composition, a fireproof coating containing the composition and a preparation method of the fireproof coating.

4) The invention provides a composition, a fireproof coating containing the composition and a preparation method thereof, the fire resistance limit of the prepared fire retardant composition is effectively improved (2.5h), antimony phosphate in selected components does not sublimate, and no loss is generated in the heating process; the antimony phosphate has good compatibility with the polymer, is easy to disperse in the polymer, and has higher reaction activity. As the temperature rises, the bentonite and the antimony phosphate gradually react at 700 ℃ to become glassy viscous substances at 900 ℃ of 800-. Meanwhile, the aluminum phosphate and the aluminum oxide play a role of a porcelain skeleton, and the fire resistance limit is further improved. The higher the temperature, the more fully the components react and the higher the strength of the resulting ceramicized mass. Because inorganic matter thermal conductivity is poor, and bentonite, aluminum phosphate and antimony phosphate decompose and can give off volatile components, micropores can be formed in the generated ceramic substance, so that the ceramic substance is poor in thermal conductivity, and the structure can effectively prevent heat transfer.

5) The invention provides a composition, a fireproof coating containing the composition and a preparation method of the fireproof coating. The flame retardant composition is easy to disperse in a base material, can be uniformly dispersed after being stirred for more than 15 minutes, and saves the preparation time.

Detailed Description

The following examples are further illustrative of the present invention for better understanding of the contents of the present invention, but the contents of the present invention are not limited to the following examples.

Example 1:

weighing the following preparation components in parts by mass: 10 parts of white bentonite, 40 parts of antimony phosphate, 5 parts of aluminum phosphate and 45 parts of alumina fiber; pouring the components into a vertical high-speed mixer, mixing, adding into the acrylate emulsion 100, and stirring for 15min to obtain the fireproof coating 1.

The fire-retardant coating 1 has a fire-retardant limit of 2.1h, as determined by experiments.

Example 2:

weighing the following preparation components in parts by mass: 20 parts of white bentonite, 30 parts of antimony phosphate, 15 parts of aluminum phosphate and 35 parts of alumina fiber; pouring the components into a vertical high-speed mixer, mixing, adding 100 parts of acrylate emulsion, and stirring for 15min to obtain the fireproof coating 2.

The fire-resistant limit of the fire retardant coating 2 was experimentally determined to be 2.5 hours.

Example 3:

weighing the following preparation components in parts by mass: 30 parts of white bentonite, 20 parts of antimony phosphate, 25 parts of aluminum phosphate and 25 parts of alumina fiber; pouring the components into a vertical high-speed mixer, mixing, adding 100 parts of acrylate emulsion, and stirring for 15min to obtain the fireproof coating 3.

The fire-resistant limit of the fire-retardant coating 3 is 2.1h by experiment.

Example 4:

weighing the following preparation components in parts by mass: 15 parts of white bentonite, 35 parts of antimony phosphate, 10 parts of aluminum phosphate and 40 parts of alumina fiber; pouring the components into a vertical high-speed mixer, mixing, adding 100 parts of acrylate emulsion, and stirring for 15min to obtain the fireproof coating 4.

The fire-retardant coating 4 has a fire-retardant limit of 2.3 hours.

Example 5:

weighing the following preparation components in parts by mass: 25 parts of white bentonite, 25 parts of antimony phosphate, 20 parts of aluminum phosphate and 30 parts of alumina fiber; pouring the components into a vertical high-speed mixer, mixing, adding 100 parts of acrylate emulsion, and stirring for 15min to obtain the fireproof coating 5.

The fire-retardant coating 5 has a fire-retardant limit of 2.3 hours.

Comparative example 1:

weighing the following preparation components in parts by mass: 5 parts of white bentonite, 10 parts of antimony phosphate, 30 parts of aluminum phosphate and 55 parts of alumina fiber; pouring the components into a vertical high-speed mixer, mixing, adding 100 parts of acrylate emulsion, and stirring for 15min to obtain the comparative coating 1.

The fire limit of comparative coating 1 was found to be 0.7 h.

Comparative example 2:

weighing the following preparation components in parts by mass: 35 parts of white bentonite, 50 parts of antimony phosphate, 5 parts of aluminum phosphate and 10 parts of alumina fiber; pouring the components into a vertical high-speed mixer, mixing, adding 100 parts of acrylate emulsion, and stirring for 15min to obtain the comparative coating 2.

The fire limit of comparative coating 2 was experimentally determined to be 0.8 h.

The preparation components and the fire endurance of the examples and comparative examples are shown in the following table:

TABLE 1 preparation Components and fire limits of the examples and comparative examples

In the table, the refractory limit temperature is hour, h.

As can be seen from table 1, the addition ratio of the white bentonite and the antimony phosphate has a large influence on the fire resistance limit of the composition, when the addition ratio of the white bentonite and the antimony phosphate is lower than the preset ratio, the glassy viscous substance is not easily formed, and when the addition ratio of the white bentonite and the antimony phosphate exceeds the preset ratio, the glassy viscous substance is not easily decomposed to release volatile components, and micropores in the generated ceramic substance are not easily formed, thereby affecting the fire resistance limit.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the contents of the specification, and must be determined according to the scope of the claims.