Fireproof material for fire engineering and preparation method thereof

Abstract

The invention discloses a fireproof material for fire-fighting engineering and a preparation method thereof, and is characterized in that the fireproof material comprises 50-80 parts of base material resin; 10 to 30 parts of a nanometer flame retardant; 5-20 parts of an inorganic filler; 2-10 parts of a flame retardant aid; 1-5 parts of a plasticizer; and 1-3 parts of a coupling agent. According to the fireproof material for the fire-fighting engineering and the preparation method of the fireproof material, the nano flame retardant is introduced and subjected to surface modification, so that the nano flame retardant is uniformly dispersed in the base material resin, the agglomeration phenomenon of nano particles is avoided, and the fire resistance and the mechanical property of the material are improved; the adopted base material resin is organic matter such as polyurethane resin, phenolic resin or epoxy resin and has the advantages of being light, high in strength, easy to process and the like, meanwhile, through compounding of the base material resin and the nanometer flame retardant, the fire resistance of the material is improved, and the application range is widened.

Description

Technical Field

[0001] The present invention relates to the technical field of fire protection engineering, and in particular to a fireproof material used in fire protection engineering and a preparation method thereof. Background Art

[0002] In recent years, casualties and property losses caused by building fires have increased significantly, attracting the attention of all sectors of society to thermal insulation and fire prevention. With the continuous development of economic construction, buildings are developing towards large-scale, three-dimensional floors, and specialized structures. The performance indicators, technical content and product quality of fireproof materials in the system are higher. How to effectively prevent the occurrence of fires and reduce the losses caused by fires is an issue that needs to be considered in the construction field. As an important building material, fireproof materials play a vital role in building fire prevention.

[0003] With the development of nanotechnology and polymer materials, people have begun to introduce nanoparticles into fireproof materials to improve their fire resistance. Nanoparticles have the characteristics of small size effect, surface effect and quantum size effect, which can significantly improve the mechanical properties and thermal stability of materials, thereby improving the performance of fireproof materials.

[0004] However, existing nano-fireproof materials often have problems such as uneven dispersion of nanoparticles and easy agglomeration during the preparation process, which leads to unstable material performance and limits their application scope. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the present invention provides a fireproof material for fire protection engineering and a preparation method thereof, the purpose of which is to solve the problems of uneven dispersion and easy agglomeration of nanoparticles, which lead to unstable performance of the material and limit its application scope.

[0006] In order to achieve the above-mentioned purpose of the invention, the technical solution adopted by the present invention is: a fireproof material for fire protection engineering and a preparation method thereof, including base resin: 50-80 parts; nano flame retardant: 10-30 parts; inorganic filler: 5-20 parts; flame retardant additive: 2-10 parts; plasticizer: 1-5 parts; coupling agent: 1-3 parts.

[0007] Furthermore, the preparation method thereof comprises the following steps:

[0008] Step 1: Take the base resin, nano flame retardant, inorganic filler, flame retardant additive and plasticizer as the core raw materials, and use high-efficiency mixing equipment to evenly mix these raw materials to obtain a uniform and delicate mixture;

[0009] Step 2: Place the mixture prepared in step 1 into a dedicated reaction kettle, heat it to a molten state under continuous stirring, and then keep it warm for 2-4 hours to obtain a molten product;

[0010] Step 3: Cooling the melt to room temperature to obtain a preliminary solidified product;

[0011] Step 4: Finally, the preliminary solidified material is crushed to obtain fireproof material particles.

[0012] Furthermore, in step 1, the method for uniform mixing is: placing each component in a high-speed mixer and mixing at a speed of 1000-2000 r / min for 10-20 minutes.

[0013] Furthermore, in step 2, the heating temperature for heating to a molten state is 120-180° C., and the stirring speed for the heat preservation reaction is 50-100 r / min.

[0014] Furthermore, in step 4, the crushing method is: placing the preliminary solidified material in a crusher and crushing it at a rotation speed of 2000-4000 r / min for 5-10 minutes.

[0015] Furthermore, the nano flame retardant is one or more of surface-modified nano silicon dioxide, nano aluminum oxide or nano magnesium hydroxide, and the surface modification method of the nano flame retardant is: dispersing the nano flame retardant in anhydrous ethanol, adding a coupling agent, reacting under ultrasonic conditions for 2-4 hours, and then centrifuging and drying to obtain a surface-modified nano flame retardant.

[0016] Furthermore, the base resin is a polyurethane resin, a phenolic resin or an epoxy resin, the inorganic filler is diatomaceous earth, kaolin or bentonite, the flame retardant additive is melamine, melamine phosphate, ammonium polyphosphate or pentaerythritol, the plasticizer is dioctyl phthalate, dibutyl phthalate or epoxy soybean oil, and the coupling agent is a silane coupling agent, a titanate coupling agent or an aluminate coupling agent.

[0017] The beneficial effects of the present invention are:

[0018] The fireproof material for fire protection engineering and the preparation method thereof of the present invention realize the uniform dispersion of the nano flame retardant in the base resin by introducing the nano flame retardant and performing surface modification on the nano flame retardant, avoids the agglomeration of nano particles, and improves the fire resistance and mechanical properties of the material.

[0019] The present invention discloses a fireproof material for fire protection engineering and a preparation method thereof. The base resin used is an organic substance such as polyurethane resin, phenolic resin or epoxy resin. The base resin has the advantages of light weight, high strength and easy processing. At the same time, the fire resistance of the material is improved by compounding with a nano flame retardant, thereby broadening the scope of application.

[0020] The fireproof material for fire protection engineering and the preparation method thereof of the present invention further add components such as inorganic fillers, flame retardant additives and plasticizers, thereby further improving the comprehensive properties of the material, such as heat resistance, flame retardancy and processability.

[0021] The fireproof material for fire protection engineering and the preparation method thereof of the present invention are simple and easy to operate, suitable for large-scale production, and no toxic or harmful solvents or catalysts are needed in the preparation process, so the fireproof material is environmentally friendly. The fireproof material has excellent fire resistance and mechanical properties, can meet the requirements of fire protection engineering for fireproof materials, and has broad application prospects. DETAILED DESCRIPTION

[0022] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention.

[0023] A fireproof material for fire protection engineering and a preparation method thereof, characterized in that it comprises 50-80 parts of base resin; 10-30 parts of nano flame retardant; 5-20 parts of inorganic filler; 2-10 parts of flame retardant auxiliary agent; 1-5 parts of plasticizer; and 1-3 parts of coupling agent.

[0024] The preparation method comprises the following steps:

[0025] Step 1: Take the base resin, nano flame retardant, inorganic filler, flame retardant additive and plasticizer as the core raw materials, and use high-efficiency mixing equipment to evenly mix these raw materials to obtain a uniform and delicate mixture;

[0026] Step 2: Place the mixture prepared in step 1 into a dedicated reaction kettle, heat it to a molten state under continuous stirring, and then keep it warm for 2-4 hours to obtain a molten product;

[0027] Step 3: Cooling the melt to room temperature to obtain a preliminary solidified product;

[0028] Step 4: Finally, the preliminary solidified material is crushed to obtain fireproof material particles.

[0029] In step 1, the method for uniform mixing is: placing each component in a high-speed mixer and mixing at a speed of 1000-2000 r / min for 10-20 minutes.

[0030] In step 2, the heating temperature for heating to a molten state is 120-180° C., and the stirring speed for the heat preservation reaction is 50-100 r / min.

[0031] In step 4, the crushing method is: placing the preliminary solidified material in a crusher, and crushing it at a rotation speed of 2000-4000 r / min for 5-10 minutes.

[0032] The nano flame retardant is one or more of surface-modified nano silicon dioxide, nano aluminum oxide or nano magnesium hydroxide. The surface modification method of the nano flame retardant is: dispersing the nano flame retardant in anhydrous ethanol, adding a coupling agent, reacting under ultrasonic conditions for 2-4 hours, and then centrifuging and drying to obtain the surface-modified nano flame retardant.

[0033] The base resin is polyurethane resin, phenolic resin or epoxy resin, the inorganic filler is diatomaceous earth, kaolin or bentonite, the flame retardant additive is melamine, melamine phosphate, ammonium polyphosphate or pentaerythritol, the plasticizer is dioctyl phthalate, dibutyl phthalate or epoxy soybean oil, and the coupling agent is silane coupling agent, titanate coupling agent or aluminate coupling agent.

[0034] Example 1

[0035] A fireproof material for fire protection engineering, comprising the following components in parts by weight:

[0036] Base material resin: 60 parts, polyurethane resin;

[0037] Nano flame retardant: 20 parts, nano silicon dioxide is selected and surface modified;

[0038] Inorganic filler: 10 parts, diatomaceous earth;

[0039] Flame retardant additive: 5 parts, melamine is selected;

[0040] Plasticizer: 3 parts, dioctyl phthalate;

[0041] Coupling agent: 2 parts, silane coupling agent is used.

[0042] The surface modification method of the nano flame retardant is as follows: dispersing nano silicon dioxide in anhydrous ethanol, adding a silane coupling agent, reacting for 3 hours under ultrasonic conditions, and then centrifuging and drying to obtain surface-modified nano silicon dioxide.

[0043] The method for preparing the fireproof material comprises the following steps:

[0044] S1: The base resin, nano flame retardant, inorganic filler, flame retardant additive and plasticizer are mixed uniformly to obtain a mixture A. Specifically, each component is placed in a high-speed mixer and mixed at a speed of 1500 r / min for 15 minutes to ensure that each component is fully mixed uniformly.

[0045] S2: Add mixture A to a reactor, heat to a molten state under stirring conditions, and then keep the mixture warm for 3 hours to obtain a melt B. Specifically, the heating temperature to the molten state is 150° C., and the stirring speed of the warm reaction is 75 r / min.

[0046] S3: Cooling the melt B to room temperature to obtain a preliminary solidified product C. During the cooling process, the melt B gradually solidifies to form a preliminary solidified product C.

[0047] S4: crushing the preliminary solidified product C to obtain fireproof material particles D. Specifically, the preliminary solidified product C is placed in a crusher and crushed at a rotation speed of 3000 r / min for 7 minutes to obtain fireproof material particles D.

[0048] Comparative Example 1

[0049] A fireproof material for fire protection engineering, the components and contents of which are different from those in Example 1, are as follows:

[0050] Base material resin: 40 parts, epoxy resin;

[0051] Nano flame retardant: 30 parts, using nano silicon dioxide without surface modification;

[0052] Inorganic filler: 20 parts, kaolin;

[0053] Flame retardant additive: 5 parts, same as in Example 1, melamine is selected;

[0054] Plasticizer: 3 parts, same as in Example 1, dioctyl phthalate;

[0055] Coupling agent: 2 parts, same as in Example 1, a silane coupling agent is selected.

[0056] The preparation method of the fireproof material is basically the same as that of Example 1, but with the following differences:

[0057] Since the nano flame retardant has not been surface-modified, the step of surface modification of the nano flame retardant in Example 1 is omitted.

[0058] When mixing the components, the rotation speed was adjusted to 1000 r / min and the mixing time was shortened to 10 minutes.

[0059] The heating temperature for heating to a molten state was adjusted to 140° C., and the stirring speed for the heat-insulating reaction was maintained at 75 r / min.

[0060] Comparison results:

[0061] During the preparation process of the fireproof material of Comparative Example 1, since the nano flame retardant has not been surface-modified, it may cause poor dispersion in the base resin, thereby affecting the overall performance of the fireproof material.

[0062] Adjustment of the rotation speed and mixing time during the preparation process may affect the uniformity of the components and thus the final performance of the fireproof material.

[0063] The reduction of heating temperature may affect the melting and reaction degree of each component, thereby affecting the structure and performance of the fireproof material.

[0064] Comparative Example 2

[0065] Another fireproof material used in fire protection engineering has components and contents that are also quite different from those in Example 1, as follows:

[0066] Base material resin: 80 parts, phenolic resin;

[0067] Nano flame retardant: 0 parts (completely omitted);

[0068] Inorganic filler: 15 parts, calcium carbonate;

[0069] Flame retardant additive: 10 parts, aluminum hydroxide is used;

[0070] Plasticizer: 5 parts, epoxy soybean oil;

[0071] Coupling agent: omitted (not added).

[0072] The preparation method of fireproof materials has also been greatly adjusted:

[0073] Since the nano flame retardant and the coupling agent are omitted, there is no need to perform a surface modification step of the nano flame retardant and add a coupling agent during the preparation process.

[0074] The components were placed in a low-speed mixer and mixed at a speed of 500 r / min for 30 minutes.

[0075] The heating temperature for heating to a molten state was adjusted to 160° C., and the stirring speed for the heat-keeping reaction was adjusted to 50 r / min.

[0076] Comparison results:

[0077] The fireproof material of Comparative Example 2 may cause a significant decrease in its flame retardant performance due to the complete omission of the nano flame retardant and the coupling agent.

[0078] The change of plasticizer type and the increase of content may affect the plasticity and processing properties of fireproof materials, but may also have an adverse effect on flame retardant properties.

[0079] Adjustments to the rotation speed and mixing time during the preparation process, as well as changes in heating temperature and stirring speed, may have a significant impact on the structure and properties of the fireproofing material.

[0080] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fireproof material for fire protection engineering and a preparation method thereof, characterized in that: Including base resin: 50-80 parts; nano flame retardant: 10-30 parts; Inorganic filler: 5-20 parts; flame retardant additive: 2-10 parts; Plasticizer: 1-5 parts; Coupling agent: 1-3 parts.

2. A fireproof material for fire protection engineering and a preparation method thereof according to claim 1, characterized in that: The preparation method thereof comprises the following steps: Step 1: Take the base resin, nano flame retardant, inorganic filler, flame retardant additive and plasticizer as the core raw materials, and use high-efficiency mixing equipment to evenly mix these raw materials to obtain a uniform and delicate mixture; Step 2: Place the mixture prepared in step 1 into a dedicated reaction kettle, heat it to a molten state under continuous stirring, and then keep it warm for 2-4 hours to obtain a molten product; Step 3: Cooling the melt to room temperature to obtain a preliminary solidified product; Step 4: Finally, the preliminary solidified material is crushed to obtain fireproof material particles.

3. The fireproof material for fire protection engineering and the preparation method thereof according to claim 1, characterized in that: In step 1, the method for uniform mixing is: placing each component in a high-speed mixer and mixing at a speed of 1000-2000 r / min for 10-20 minutes.

4. The fireproof material for fire protection engineering and the preparation method thereof according to claim 1, characterized in that: In the step 2, the heating temperature for heating to a molten state is 120-180° C., and the stirring speed for the heat preservation reaction is 50-100 r / min.

5. The fireproof material for fire protection engineering and the preparation method thereof according to claim 1, characterized in that: In step 4, the crushing method is: placing the preliminary solidified material in a crusher and crushing it at a speed of 2000-4000 r / min for 5-10 minutes.

6. The fireproof material for fire protection engineering and the preparation method thereof according to claim 1, characterized in that: The nano flame retardant is one or more of surface-modified nano silicon dioxide, nano aluminum oxide or nano magnesium hydroxide. The surface modification method of the nano flame retardant is: dispersing the nano flame retardant in anhydrous ethanol, adding a coupling agent, reacting under ultrasonic conditions for 2-4 hours, and then centrifuging and drying to obtain the surface-modified nano flame retardant.

7. The fireproof material for fire protection engineering and the preparation method thereof according to claim 1, characterized in that: The base resin is polyurethane resin, phenolic resin or epoxy resin, the inorganic filler is diatomaceous earth, kaolin or bentonite, the flame retardant additive is melamine, melamine phosphate, ammonium polyphosphate or pentaerythritol, the plasticizer is dioctyl phthalate, dibutyl phthalate or epoxy soybean oil, and the coupling agent is silane coupling agent, titanate coupling agent or aluminate coupling agent.