Titanium gypsum fireproof door core material

Abstract

The invention relates to the technical field of fireproof door cores, in particular to a titanium gypsum fireproof door core material which is prepared by the following steps: uniformly stirring semi-hydrated titanium gypsum, an auxiliary agent, glass fibers and a light material to obtain a mixture; uniformly stirring water and a foaming agent to obtain a mixed solution; and uniformly stirring the mixture and the mixed solution to prepare the titanium gypsum fireproof door core material. The titanium gypsum fireproof door core material is prepared by taking the titanium gypsum as a main raw material and taking the auxiliary agent, the glass fiber, the fly ash and the like in an optimized ratio as auxiliary materials, and a fireproof door core prepared from the titanium gypsum fireproof door core material has the characteristics of light weight, high strength, good fireproof performance and the like; in addition, efficient utilization of the titanium gypsum is achieved, large-scale accumulation and landfill of the titanium gypsum are avoided, and the positive effect on environment improvement is achieved; in addition, the titanium gypsum fireproof door core material has the micro-expansion characteristic during hardening forming, so that the door plate cavity is densely filled with the titanium gypsum fireproof door core material, and the quality of the fireproof door can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of fireproof door cores, in particular to a titanium gypsum fireproof door core material. Background Art

[0002] Fire door filling materials are an important part of the inspection and acceptance of fire door systems and must have good fire resistance and heat insulation properties. Traditional door core panels are often made of magnesium chloride and magnesium oxide. For steel fire doors, the "halogen backflow" phenomenon is prone to occur. The free chloride ions react with the steel to cause corrosion of the door panel, and the door core panel separates from the steel plate, affecting its heat insulation performance. Therefore, it is urgent to find a new material to replace magnesium chloride and magnesium oxide as the door core material of fire doors.

[0003] Titanium dioxide is one of the three major inorganic chemical products in the world. It is a white pigment with stable performance. Its main component is titanium dioxide. It is widely used in industries such as coatings, plastics, papermaking, printing inks, chemical fibers and rubber. The main production process of titanium dioxide in my country is the sulfuric acid method. This process will produce a large amount of waste acid and acidic wastewater. Lime is generally used for neutralization treatment, which will produce a large amount of titanium gypsum. Due to the low comprehensive utilization rate of titanium gypsum, the cumulative stockpile is close to 300 million tons, and the current annual output is 20 million tons, resulting in large-scale stacking, which not only occupies a large amount of land, but also poses risks to the surrounding environment. Based on this, a titanium gypsum fireproof door core material is proposed. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a titanium gypsum fireproof door core material, which uses titanium gypsum as the main raw material, supplemented by additives with optimized ratios, glass fiber and fly ash to produce the titanium gypsum fireproof door core material. The fireproof door core prepared by the titanium gypsum fireproof door core has the characteristics of light weight, high strength and good fireproof performance.

[0005] To achieve the above purpose, the present invention provides the following technical solution: a titanium gypsum fireproof door core material, comprising the following raw materials: 1-2% foaming agent, 1.3-2% auxiliary agent, 2-3% glass fiber, 1-3% lightweight material, and the remainder is hemihydrate titanium gypsum and water.

[0006] Preferably, the mass ratio of the hemihydrate titanium gypsum to water is 3:4.

[0007] Preferably, the foaming agent is selected from animal protein foaming agents and GYP-2620.

[0008] Preferably, the auxiliary agent is selected from phenolic resin, polyiron and alum.

[0009] Preferably, by mass percentage, the phenolic resin is 0.2-0.5%, the polyiron is 0.6-0.8%, and the alum is 0.5-0.7%.

[0010] Preferably, the lightweight material is selected from perlite and fly ash.

[0011] Preferably, the mass ratio of perlite to fly ash is (1-2):(1-3).

[0012] Preferably, the hemihydrate titania gypsum is obtained by calcining dihydrate titania gypsum at 450-600° C., and its crystals are β-type.

[0013] The present invention provides a method for preparing a titanium gypsum fireproof door core material, comprising the following steps:

[0014] (1) uniformly stirring hemihydrate titanium gypsum, additives, glass fiber and lightweight materials to obtain a mixture;

[0015] (2) uniformly stirring water and a foaming agent to obtain a mixed solution;

[0016] (3) The mixed material and the mixed liquid are uniformly stirred to obtain a titanium gypsum fireproof door core material.

[0017] The present invention also provides a fireproof door. The fireproof door is obtained by injecting a titanium gypsum fireproof door core material into a door panel cavity and performing static molding.

[0018] The present invention provides a titanium gypsum fireproof door core material, which has the following beneficial effects compared with the prior art:

[0019] The present invention uses titanium gypsum as a main raw material, supplemented by an optimized ratio of additives, glass fiber and fly ash to generate a titanium gypsum fireproof door core material. The fireproof door core prepared by the titanium gypsum has the characteristics of light weight, high strength, good fireproof performance, etc.; and realizes efficient utilization of titanium gypsum, avoids its large-scale accumulation and landfill, and plays a positive role in improving the environment; in addition, the titanium gypsum fireproof door core material has the characteristic of micro-expansion during hardening and molding, and can be densely filled in the door panel cavity, which can improve the quality of the fireproof door.

[0020] The hydration products of titanium gypsum-fly ash in the present invention are mainly CSH gel, ettringite and dihydrate gypsum, which are bonded together with unreacted fly ash to form a hardened body, thereby enhancing the overall strength of the fireproof door core. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0022] Figure 1 This is a finished product picture of the fireproof door core of the present invention;

[0023] Figure 2 This is a test block diagram of the fire door material of the present invention;

[0024] Figure 3 It is a cross-sectional view of the fire door of the present invention. DETAILED DESCRIPTION

[0025] The following examples are used to explain the implementation methods of the present application in detail, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0026] Example 1

[0027] A titanium gypsum fireproof door core material, in terms of mass percentage, includes the following raw materials: 2% animal protein foaming agent, 1.3% auxiliary agent (including 0.2% phenolic resin, 0.6% polyferric, 0.5% alum), 3% glass fiber, 1% lightweight material, and the remainder is hemihydrate titanium gypsum and water, and the mass ratio of hemihydrate titanium gypsum to water is 3:4. Hemihydrate titanium gypsum is obtained by calcining dihydrate titanium gypsum at 600°C, and its crystal is β-type.

[0028] The lightweight material is selected from perlite and fly ash; and the mass ratio of perlite to fly ash is 1:1.

[0029] The method for preparing the titanium gypsum fireproof door core material comprises the following steps:

[0030] (1) uniformly stirring hemihydrate titanium gypsum, additives, glass fiber and lightweight materials to obtain a mixture;

[0031] (2) uniformly stirring water and an animal protein foaming agent to obtain a mixed solution;

[0032] (3) The mixed material and the mixed liquid are uniformly stirred to obtain a titanium gypsum fireproof door core material.

[0033] Example 2

[0034] A titanium gypsum fireproof door core material includes the following raw materials, measured by mass percentage: 1% of GYP-2620 foaming agent, 1.4% of auxiliary agent (including 0.2% of phenolic resin, 0.6% of polyferric, and 0.6% of alum), 2% of glass fiber, 3% of lightweight material, and the remainder is hemihydrate titanium gypsum and water, and the mass ratio of hemihydrate titanium gypsum to water is 3:4. Hemihydrate titanium gypsum is obtained by calcining dihydrate titanium gypsum at 450°C, and its crystal is β-type.

[0035] The lightweight material is selected from perlite and fly ash; and the mass ratio of perlite to fly ash is 1:2.

[0036] The method for preparing the titanium gypsum fireproof door core material comprises the following steps:

[0037] (1) uniformly stirring hemihydrate titanium gypsum, additives, glass fiber and lightweight materials to obtain a mixture;

[0038] (2) uniformly stirring water and GYP-2620 foaming agent to obtain a mixed solution;

[0039] (3) The mixed material and the mixed liquid are uniformly stirred to obtain a titanium gypsum fireproof door core material.

[0040] Example 3

[0041] A titanium gypsum fireproof door core material includes the following raw materials, by mass percentage: 1% of GYP-2620 foaming agent, 1.3% of auxiliary agent (including 0.2% of phenolic resin, 0.6% of polyferric, and 0.5% of alum), 3% of glass fiber, 3% of lightweight material, and the remainder is hemihydrate titanium gypsum and water, and the mass ratio of hemihydrate titanium gypsum to water is 3:4. Hemihydrate titanium gypsum is obtained by calcining dihydrate titanium gypsum at 500°C, and its crystal is β-type.

[0042] The lightweight material is selected from perlite and fly ash; and the mass ratio of perlite to fly ash is 1:3.

[0043] The method for preparing the titanium gypsum fireproof door core material comprises the following steps:

[0044] (1) uniformly stirring hemihydrate titanium gypsum, additives, glass fiber and lightweight materials to obtain a mixture;

[0045] (2) uniformly stirring water and GYP-2620 foaming agent to obtain a mixed solution;

[0046] (3) The mixed material and the mixed liquid are uniformly stirred to obtain a titanium gypsum fireproof door core material.

[0047] Example 4

[0048] A titanium gypsum fireproof door core material includes the following raw materials by mass percentage: 2% of GYP-2620 foaming agent, 2% of auxiliary agent (including 0.5% of phenolic resin, 0.8% of polyferric, and 0.7% of alum), 3% of glass fiber, 2% of lightweight material, and the remainder is hemihydrate titanium gypsum and water, and the mass ratio of hemihydrate titanium gypsum to water is 3:4. Hemihydrate titanium gypsum is obtained by calcining dihydrate titanium gypsum at 450-600°C, and its crystal is β-type.

[0049] The lightweight material is selected from perlite and fly ash; and the mass ratio of perlite to fly ash is 2:1.

[0050] The method for preparing the titanium gypsum fireproof door core material comprises the following steps:

[0051] (1) uniformly stirring hemihydrate titanium gypsum, additives, glass fiber and lightweight materials to obtain a mixture;

[0052] (2) uniformly stirring water and GYP-2620 foaming agent to obtain a mixed solution;

[0053] (3) The mixed material and the mixed liquid are uniformly stirred to obtain a titanium gypsum fireproof door core material.

[0054] Example 5

[0055] A fireproof door is obtained by injecting the titanium gypsum fireproof door core material prepared in Example 3 into the cavity of a door panel and allowing it to stand for forming.

[0056] Comparative Example 1

[0057] A titanium gypsum fireproof door core material includes the following raw materials, by mass percentage: 1% of GYP-2620 foaming agent, 1.2% of auxiliary agent (including 0.3% of phenolic resin, 0.5% of polyferric, and 0.4% of alum), 3% of glass fiber, 3% of lightweight material, and the remainder is hemihydrate titanium gypsum and water, and the mass ratio of hemihydrate titanium gypsum to water is 3:4. Hemihydrate titanium gypsum is obtained by calcining dihydrate titanium gypsum at 500°C, and its crystal is β-type.

[0058] The lightweight material is selected from perlite and fly ash; and the mass ratio of perlite to fly ash is 1:3.

[0059] The method for preparing the titanium gypsum fireproof door core material comprises the following steps:

[0060] (1) uniformly stirring hemihydrate titanium gypsum, additives, glass fiber and lightweight materials to obtain a mixture;

[0061] (2) uniformly stirring water and GYP-2620 foaming agent to obtain a mixed solution;

[0062] (3) The mixed material and the mixed liquid are uniformly stirred to obtain a titanium gypsum fireproof door core material.

[0063] Comparative Example 2

[0064] A titanium gypsum fireproof door core material includes the following raw materials, by mass percentage: 1% of GYP-2620 foaming agent, 2.2% of auxiliary agent (including 0.6% of phenolic resin, 0.8% of polyferric, and 0.8% of alum), 3% of glass fiber, 3% of lightweight material, and the remainder is hemihydrate titanium gypsum and water, and the mass ratio of hemihydrate titanium gypsum to water is 3:4. Hemihydrate titanium gypsum is obtained by calcining dihydrate titanium gypsum at 500°C, and its crystal is β-type.

[0065] The lightweight material is selected from perlite and fly ash; and the mass ratio of perlite to fly ash is 1:3.

[0066] The method for preparing the titanium gypsum fireproof door core material comprises the following steps:

[0067] (1) uniformly stirring hemihydrate titanium gypsum, additives, glass fiber and lightweight materials to obtain a mixture;

[0068] (2) uniformly stirring water and GYP-2620 foaming agent to obtain a mixed solution;

[0069] (3) The mixed material and the mixed liquid are uniformly stirred to obtain a titanium gypsum fireproof door core material.

[0070] Comparative Example 3

[0071] A titanium gypsum fireproof door core material includes the following raw materials, by mass percentage: 1% of GYP-2620 foaming agent, 1.3% of auxiliary agent (including 0.2% of phenolic resin, 0.6% of polyferric, and 0.5% of alum), 3% of glass fiber, 3% of lightweight material (perlite), and the remainder is hemihydrate titanium gypsum and water, and the mass ratio of hemihydrate titanium gypsum to water is 3:4. Hemihydrate titanium gypsum is obtained by calcining dihydrate titanium gypsum at 500°C, and its crystal is β-type.

[0072] The method for preparing the titanium gypsum fireproof door core material comprises the following steps:

[0073] (1) uniformly stirring hemihydrate titanium gypsum, additives, glass fiber and lightweight material (perlite) to obtain a mixture;

[0074] (2) uniformly stirring water and GYP-2620 foaming agent to obtain a mixed solution;

[0075] (3) The mixed material and the mixed liquid are uniformly stirred to obtain a titanium gypsum fireproof door core material.

[0076] Comparative Example 4

[0077] A phosphogypsum fireproof door core material comprises the following raw materials, measured by mass percentage: 1% of GYP-2620 foaming agent, 1.3% of auxiliary agent (including 0.2% of phenolic resin, 0.6% of polyiron, and 0.5% of alum), 3% of glass fiber, 3% of lightweight material, and the remainder is α-type semi-hydrated phosphogypsum and water, and the mass ratio of α-type semi-hydrated phosphogypsum to water is 3:4.

[0078] The lightweight material is selected from perlite and fly ash; and the mass ratio of perlite to fly ash is 1:3.

[0079] The method for preparing the titanium gypsum fireproof door core material comprises the following steps:

[0080] (1) uniformly stirring α-type hemihydrate phosphogypsum, additives, glass fiber and lightweight materials to obtain a mixture;

[0081] (2) uniformly stirring water and GYP-2620 foaming agent to obtain a mixed solution;

[0082] (3) The mixed material and the mixed liquid are uniformly stirred to obtain a titanium gypsum fireproof door core material.

[0083] Quality Inspection

[0084] 1. Referring to the standard of GB 12955-2008 "Fire Door", the fire door core materials in Examples 1-4 and Comparative Examples 1-3 were used to prepare fire door core boards, and the fire door core boards were tested. The specific test results are shown in the following table.

[0085] Table 1 Performance indicators

[0086] category <![CDATA[Density (kg / m 3 )]]> Fire performance Compressive strength(MPa) Flexural strength(MPa) Example 1 350 A1.5 0.44 0.28 Example 2 340 A1.5 0.43 0.27 Example 3 330 A1.5 0.42 0.26 Example 4 320 A1.5 0.40 0.25 Comparative Example 1 305 Level A1 0.36 0.21 Comparative Example 2 310 Level A1 0.37 0.23 Comparative Example 3 322 Level A1 0.40 0.25 Comparative Example 4 315 Level A1 0.40 0.26 Technical indicators ≤350 Level A1 ≥0.4 ≥0.25

[0087] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A titanium gypsum fireproof door core material, characterized in that: Calculated by mass percentage, the raw materials include: 1-2% of foaming agent, 1.3-2% of auxiliary agent, 2-3% of glass fiber, 1-3% of lightweight material, and the balance is hemihydrate titanium gypsum and water.

2. The titanium gypsum fireproof door core material according to claim 1, characterized in that: The mass ratio of the hemihydrate titanium gypsum to water is 3:

4.

3. The titanium gypsum fireproof door core material according to claim 1, characterized in that: The foaming agent is selected from animal protein foaming agents and GYP-2620.

4. The titanium gypsum fireproof door core material according to claim 1, characterized in that: The auxiliary agent is selected from phenolic resin, polyferric and alum.

5. The titanium gypsum fireproof door core material according to claim 4, characterized in that: Calculated by mass percentage, the phenolic resin is 0.2-0.5%, the polyiron is 0.6-0.8%, and the alum is 0.5-0.7%.

6. The titanium gypsum fireproof door core material according to claim 1, characterized in that: The lightweight material is selected from perlite and fly ash.

7. The titanium gypsum fireproof door core material according to claim 1, characterized in that: The mass ratio of the perlite to the fly ash is (1-2):(1-3).

8. The titanium gypsum fireproof door core material according to claim 1, characterized in that: The hemihydrate titanium gypsum is prepared by calcining dihydrate titanium gypsum at 450-600° C., and its crystal is β-type.

9. The method for preparing the titanium gypsum fireproof door core material according to any one of claims 1 to 8, characterized in that: The following steps are involved: (1) uniformly stirring hemihydrate titanium gypsum, additives, glass fiber and lightweight materials to obtain a mixture; (2) uniformly stirring water and a foaming agent to obtain a mixed solution; (3) The mixed material and the mixed liquid are uniformly stirred to obtain a titanium gypsum fireproof door core material.

10. A fireproof door, using the titanium gypsum fireproof door core material according to any one of claims 1 to 8 or the titanium gypsum fireproof door core material prepared by the preparation method of claim 8, characterized in that: The titanium gypsum fireproof door core material is injected into the cavity of the door panel and formed by static molding to obtain a fireproof door.

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