CN114961528A

CN114961528A - Wooden fireproof door and production process thereof

Info

Publication number: CN114961528A
Application number: CN202210576232.6A
Authority: CN
Inventors: 喻爱国; 姜林海
Original assignee: Zhejiang Fengcheng Door Industry Co ltd
Current assignee: Zhejiang Fengcheng Door Industry Co ltd
Priority date: 2022-05-25
Filing date: 2022-05-25
Publication date: 2022-08-30

Abstract

The application relates to a wooden fireproof door and a production process thereof, relating to the field of fireproof building materials and comprising a door frame, a first fireproof plate, a fireproof filling layer and a second fireproof plate; the first fireproof plate, the fireproof filling layer and the second fireproof plate are sequentially overlapped and then fixedly connected with the door frame; flame-retardant coatings are arranged on the sides, far away from the fireproof filling layer, of the first fireproof plate and the second fireproof plate; the fireproof filling layer comprises a filling framework and fireproof filler filled on the filling framework, and the fireproof filler comprises the following raw materials in parts by weight: 5-15 parts of glass beads, 2-10 parts of aluminum silicate ceramic fiber cotton, 8-20 parts of aluminum hydroxide and 12-20 parts of epoxy resin. The utility model provides a fire door that prevents that this application technical scheme provided, the installation and switching of being convenient for are makeed light to have good fire-resistant fire-retardant heat-proof quality.

Description

Wooden fireproof door and production process thereof

Technical Field

The application relates to the field of fireproof building materials, in particular to a wooden fireproof door and a production process thereof.

Background

The fireproof door is an indispensable component part in modern buildings, can effectively prevent the spreading of fire when a fire disaster occurs in the building, can effectively prevent the diffusion of smoke, provides certain time for people evacuation and fire fighting, and plays an extremely important role in the fireproof capacity in the building. Fire doors need to meet the requirements of fire resistance stability, integrity and good heat insulation within a certain period of time and are generally arranged in fire-proof partitions, evacuation stairwells, vertical shafts and other positions.

The fireproof door that present commonly used is mostly the fire door of preventing fire door, steel wood or the fire door that metal and inorganic material complex were made, and its material is incombustible material and has higher high temperature resistant deformability. However, the steel fireproof door is quite thick and heavy as a whole, and is inconvenient to open and close; although current wooden fire door has alleviateed fire door's weight to a certain extent, wooden material fire behavior is relatively poor, need prevent fires to it and just can satisfy fire door's performance requirement after fire-retardant processing, and present wooden fire door fire-retardant processing technology is more loaded down with trivial details, and production cycle is longer, and the manufacturing cost who leads to wooden fire door is higher, is unfavorable for long time popularization.

Disclosure of Invention

To above-mentioned technical problem, the application provides a wooden fire door and production technology for wooden fire door when having better fire behavior, simplifies its production technology, and then reduces wooden fire door's manufacturing cost, improves production efficiency.

First aspect, the application provides a wooden fire door that prevents adopts following technical scheme:

a wooden fireproof door comprises a door frame, a first fireproof plate, a fireproof filling layer and a second fireproof plate;

the first fireproof plate, the fireproof filling layer and the second fireproof plate are sequentially overlapped and then fixedly connected with the door frame;

flame-retardant coatings are arranged on the sides, away from the fireproof filling layer, of the first fireproof plate and the second fireproof plate;

the fireproof filling layer comprises a filling framework and fireproof filler filled on the filling framework, and the fireproof filler comprises the following raw materials in parts by weight: 5-15 parts of glass beads, 2-10 parts of aluminum silicate ceramic fiber cotton, 8-20 parts of aluminum hydroxide and 12-20 parts of epoxy resin.

Through adopting above-mentioned technical scheme, prevent fire door mainly plays the thermal-insulated effect of fire prevention, it is fixed with two-layer PLASTIC LAMINATED and one deck fire prevention filling layer through the door frame, first PLASTIC LAMINATED and second PLASTIC LAMINATED are wooden material, and the surface of first PLASTIC LAMINATED and second PLASTIC LAMINATED all is provided with fire protection coating and can effectively promote its fire behaviour, fire door's fire behavior can be strengthened to middle fire prevention filling layer on the one hand, on the other hand can promote the thermal-insulated effect of preventing fire door, the temperature that restraines the back fire surface of preventing fire door risees, further the fire door's fire resistance is prevented in the reinforcing.

The fireproof filler Chinese fireproof material mainly comprises glass beads, aluminum silicate ceramic fibers and aluminum hydroxide. The aluminum silicate ceramic fiber has the characteristics of stable performance, long dimension, high tensile strength, less slag balls and the like, has low thermal capacity, low thermal conductivity and excellent thermal stability, is light in weight, and can be prepared into the fireproof filler with good fire resistance by compounding with the glass beads and the aluminum hydroxide. The aluminum hydroxide can be heated and decomposed at high temperature to generate a high-temperature-resistant aluminum oxide film, and the glass beads and the aluminum silicate ceramic fibers can be wrapped and crosslinked in the decomposition process of the aluminum hydroxide, so that the three materials form a stable fireproof filler structure and have good fireproof performance.

The thickness of the fireproof filling layer is preferably 2-10 mm. Within the range, the fireproof filling layer has good flame-retardant and heat-insulating properties, and meanwhile, the whole thickness of the fireproof door cannot be greatly influenced.

Optionally, the mass ratio of the aluminum silicate ceramic fiber cotton to the aluminum hydroxide is 1: (2.5-4.5).

By adopting the technical scheme, the adding proportion of the aluminum silicate ceramic fiber and the aluminum hydroxide is limited in the range, on one hand, a better fireproof flame-retardant effect can be achieved, and on the other hand, a better covering and cross-linking state can be achieved after the aluminum hydroxide is heated and decomposed at a high temperature, so that the fireproof filling layer has higher fireproof stability.

Optionally, a plurality of independent filling grids are arranged on the filling framework, and the fireproof filler is filled in the filling grids.

Through adopting above-mentioned technical scheme, set up a plurality of packing grids on filling the skeleton, pack the fire prevention and separately pack in every packing grid, can improve the packing degree of consistency that the fire prevention was packed, simultaneously, can avoid the fire prevention to pack and gather the caking under the action of gravity, promote the whole fire resistance and the fire-retardant heat-proof quality of preventing fire door.

Optionally, the flame-retardant coating is formed by coating a flame-retardant coating on the first fireproof plate and the fireproof plate and curing the coating, wherein the flame-retardant coating comprises the following raw materials in parts by weight: 8-20 parts of water, 10-25 parts of waterborne epoxy resin emulsion, 5-12 parts of expanded graphite, 3-10 parts of glass beads and 0.5-1 part of surfactant.

By adopting the technical scheme, the main body of the flame-retardant coating is a resin material which has good fluidity and can be stably attached to the flame-retardant layer, the epoxy resin has good stability and weather resistance, and can be stably attached to the surface of a wooden fireproof plate, and a composite flame retardant prepared from glass beads and expanded graphite can be stably fixed on the surface of a fireproof door to form a flame-retardant coating, so that the flame-retardant capability of the fireproof door is further improved; in addition, the expanded graphite can be rapidly expanded at high temperature, the volume of the expanded graphite is greatly changed, a tough carbon layer can be generated on the surface layer of the polyurethane under the action of high temperature, the epoxy resin can be inhibited from being heated, softened and dropping while the flame retardant effect is further achieved, and the flame retardant coating has good stability.

Optionally, the mass ratio of the aqueous epoxy resin, the expanded graphite and the glass beads is (3-4.5): (1-2): 1.

by adopting the technical scheme, the mass ratio of the water-based epoxy resin, the expanded graphite and the glass beads is limited in the range, the prepared flame-retardant coating has better heat-resistant flame-retardant performance, and the flame-retardant coating is more stable in property and is not easy to peel off.

Optionally, the thickness of the heat-resistant coating is 0.5-2 mm.

In a second aspect, the application provides a production process of a wooden fireproof door, which adopts the following technical scheme:

a production process of a wooden fireproof door comprises the following steps:

s1, fixing a filling framework on one side of a first fireproof plate, and uniformly filling the prepared fireproof filler on the filling framework and compacting to prepare a fireproof filling layer;

s2, overlapping the second fireproof plate on the filling framework, and then fixedly connecting the first fireproof plate with the second fireproof plate;

s3, uniformly coating the prepared flame-retardant coating on the outer surfaces of the first fireproof plate and the second fireproof plate, and curing the fireproof coating to form a flame-retardant coating to obtain a rough door plate;

and S4, polishing the rough door plate, and assembling the polished door plate with the door frame to obtain the fireproof door.

Through adopting above-mentioned technical scheme, prevent that fire door adopts the production technology that the layer structure piles up to prepare, will pack the skeleton and prescribe earlier and carry out the packing of fire prevention filler again on first PLASTIC LAMINATED, can make the fire prevention filler more even, avoid producing and fill the cavity or fill and pile up. Carry out the coating of fire-retardant coating again after fixing first PLASTIC LAMINATED, fire prevention filling layer and second PLASTIC LAMINATED, can further shorten the coating time, promote production efficiency.

Optionally, the fireproof filler is filled by the following method:

firstly, sequentially adding aluminum hydroxide and glass beads into epoxy resin, stirring and mixing uniformly, then adding aluminum silicate ceramic fiber cotton, mixing uniformly to obtain a fireproof filler, finally filling the fireproof filler between the filling framework and the first fireproof plate, and curing the epoxy resin to form a fireproof filling layer.

By adopting the technical scheme, the aluminum silicate ceramic fiber cotton is of a fibrous structure, is light in weight, has high void ratio when directly filled, and is difficult to distribute uniformly because aluminum hydroxide and glass beads easily move in gaps between the aluminum hydroxide and the glass beads; by adding a certain amount of epoxy resin, aluminum silicate ceramic fiber cotton, aluminum hydroxide and glass beads are compounded to form a colloidal material, so that the three fireproof materials are uniformly dispersed as far as possible and can be stably attached to a filling framework.

Optionally, the flame retardant coating is prepared by the following method:

uniformly mixing the water-based epoxy resin emulsion with water, and then adding a surfactant for uniform mixing;

and then sequentially adding the expanded graphite and the glass beads, and uniformly mixing to obtain the flame-retardant coating.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the utility model provides a prevent fire door, it is fixed with two-layer PLASTIC LAMINATED and one deck fire prevention filling layer through the door frame, the fire prevention board surface is provided with fire protection coating and can effectively promotes its fire behaviour, fire prevention performance that fire door can be strengthened on the one hand to middle fire prevention filling layer, and on the other hand can promote the thermal-insulated effect of preventing fire door, and the temperature that restraines the face of a fire of preventing fire door against the fire risees, further strengthens the fire resistance of preventing fire door.

2. In this application technical scheme further sets up, sets up a plurality of packing grids on filling the skeleton, separately packs the fire prevention filler in every packing grid, can improve the packing degree of consistency that the fire prevention was packed, simultaneously, can avoid the fire prevention filler to gather the caking under the action of gravity, promotes the whole fire resistance and the fire-retardant heat-proof quality of preventing fire door.

3. In the technical scheme further provided by the application, the mass ratio of the water-based epoxy resin, the expanded graphite and the glass beads is limited in the range, the prepared flame-retardant coating has better heat-resistant flame-retardant performance, and the flame-retardant coating is more stable in property and difficult to peel off.

Drawings

Figure 1 is the structure schematic diagram of the wooden fire door that this application technical scheme provided.

Description of reference numerals: 1. a door frame; 2. a first fire retardant panel; 3. a fire-resistant filler layer; 4. a second fire retardant panel; 5. and (3) a flame-retardant coating.

Detailed Description

The present application will be described in further detail with reference to the following drawings and specific embodiments. It should be noted that, in the following examples, those not specifically mentioned are performed according to conventional conditions or conditions recommended by the manufacturer; the starting materials used in the following examples are all those conventionally commercially available except where specifically noted.

Preparation of fire-retardant Filler

Preparation examples 1 to 4

Referring to the mixture ratio in table 1, the fire-retardant filler is prepared according to the following method:

s1, slowly adding aluminum hydroxide and glass beads into liquid epoxy resin in sequence under stirring, and uniformly stirring and mixing;

s2, before the fireproof filler is fed, adding the aluminum silicate ceramic fiber cotton into the mixture prepared in the step S1, and then slowly stirring and uniformly mixing to obtain the fireproof filler.

Table 1: preparation examples 1 to 4 raw Material proportions (units:kg)

	Glass micro-beads	Aluminium silicate ceramic fibre cotton	Aluminum hydroxide	Epoxy resin
					Preparation example 1	5	2	20	20
Preparation example 2	15	10	8	12
					Preparation example 3	12	8	15	16
Preparation example 4	14	4	15	16

Preparation example of flame retardant coating

Preparation examples 5 to 8

Referring to the mixture ratio in table 2, the flame retardant coating was prepared as follows:

s1, adding the water-based epoxy resin emulsion into water according to a proportion, stirring and mixing uniformly, then adding the expanded graphite, and continuing stirring to uniformly disperse the expanded graphite in an epoxy resin system;

s2, slowly adding the glass beads while stirring, and continuously stirring until the glass beads are uniformly dispersed;

and S3, adding a surfactant before feeding, and uniformly mixing to obtain the flame-retardant coating.

Table 2: preparation examples 5 to 8 raw Material ratios

Examples

Example 1

The wooden fireproof door is prepared by the following processes:

s1, horizontally placing a first fireproof plate 2, adhering and fixing a latticed filling framework on the surface of the first fireproof plate 2, filling the fireproof filler prepared in the preparation example 1 into grids on the filling framework, compacting, and controlling the filling thickness of the compacted fireproof filler to be 2 mm to prepare a fireproof filling layer 3;

s2, horizontally placing the second fireproof plate 4 on the fireproof filling layer 4 and pressing the second fireproof plate 4, and bonding and fixing the edge positions of the first fireproof plate 2 and the second fireproof plate 4 through an adhesive;

s3, uniformly coating the flame-retardant coating prepared in the preparation example 5 on the opposite sides of the first fireproof plate 2 and the second fireproof plate 4, and curing at normal temperature to form a flame-retardant coating 5, wherein the thickness of the flame-retardant coating 5 is controlled to be 0.5 mm, so as to prepare a rough door plate;

and S4, polishing the rough door plate, and then assembling and fixing the rough door plate with the door frame 1 to obtain the wooden fireproof door.

Example 2

Provided is a fire-proof wooden door, which is different from the embodiment 1 in that: the fire-retardant filler prepared in preparation example 2 was used, and the rest was the same as in example 1.

Example 3

Provided is a fire-proof wooden door, which is different from the embodiment 1 in that: the fire-retardant filler used was the one obtained in preparation example 3, the remainder being identical to that of example 1.

Example 4

Provided is a fire-proof wooden door, which is different from the embodiment 3 in that: the thickness of the compacted fire-retardant filler was 10 mm, and the rest was the same as in example 3.

Example 5

Provided is a fire-proof wooden door, which is different from the embodiment 1 in that: the flame retardant coating prepared in preparation example 6 was selected for the flame retardant coating, and the rest was the same as in example 1.

Example 6

Provided is a fire-proof wooden door, which is different from the embodiment 1 in that: the flame-retardant coating prepared in preparation example 7 was selected as the flame-retardant coating, and the rest was the same as in example 1.

Example 7

Provided is a fire-proof wooden door, which is different from the embodiment 1 in that: the flame-retardant coating prepared in preparation example 8 was selected as the flame-retardant coating, and the rest was the same as in example 1.

Example 8

Provided is a fire-proof wooden door, which is different from the embodiment 7 in that: the thickness of the flame retardant coating layer was 2 mm, and the remainder was in accordance with example 7.

Example 9

Provided is a fire-proof wooden door, which is different from the embodiment 1 in that: the fire-retardant filler obtained in preparation example 4 was used, and the remainder was the same as in example 1.

Comparative example

Comparative example 1

Provided is a wooden fire door, which is different from the embodiment 1 in that: the fire-retardant filling layer was not provided, and the rest was the same as in example 1.

Comparative example 2

Provided is a wooden fire door, which is different from the embodiment 1 in that: the fire-retardant filler is not added with glass beads, and the rest is consistent with the example 1.

Comparative example 3

Provided is a fire-proof wooden door, which is different from the embodiment 1 in that: the flame retardant coating was not provided and the rest was in accordance with example 1.

Comparative example 4

Comparative example 4 is a conventional fire-proof wooden door currently on the market.

Performance test

The fire door samples of the comparative examples 1 to 4 of the grades 1 to 9 of the examples are subjected to performance detection, and the detection contents and the detection methods are as follows:

1. flame retardant property: according to the GB/T7633-.

2. Heat insulation performance: and measuring the average temperature rise and the maximum temperature rise of the back fire surface of the heat-preservation heat-insulation fireproof door sample by adopting a temperature measurement thermocouple, and recording the average temperature rise and the maximum temperature rise data of the back fire surface of the fireproof door when a fire resistance test is carried out for 1 h.

The results of the performance testing are shown in Table 5 below.

By combining the data in examples 1-9, comparative examples 1-4 and table 1, the wooden fireproof door provided by the technical scheme of the application can bear high-temperature fire for a long time, keep good integrity, have good heat insulation performance, can effectively inhibit the rise of the temperature of the back fire surface of the fireproof door after a fire occurs, and has good fireproof performance.

Through adjusting the refractory filler and the flame-retardant coating material matching ratio, the fire resistance of the fireproof filling layer and the flame-retardant coating layer can be further improved, the flame-retardant and heat-insulating effect of the fireproof door can be further enhanced, and the fireproof door with more excellent fire resistance, flame retardance and heat-insulating performance is obtained.

In conclusion, the fireproof door and the production process thereof, which are provided by the technical scheme of the application, are based on the wooden fireproof plate, the flame retardant performance of the fireproof door is further enhanced by additionally arranging the fireproof filling layer and the flame retardant coating, and meanwhile, light materials are selected for various raw materials, so that the weight of the fireproof door is greatly reduced, and the fireproof door is more convenient to install and open and close.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A wooden fireproof door comprises a door frame (1), a first fireproof plate (2), a fireproof filling layer (3) and a second fireproof plate (4);

the first fireproof plate (2), the fireproof filling layer (3) and the second fireproof plate (4) are sequentially overlapped and then fixedly connected with the door frame (1);

flame-retardant coatings (5) are arranged on the sides, far away from the fireproof filling layer (3), of the first fireproof plate (2) and the second fireproof plate (4);

the fireproof filling layer (3) comprises a filling framework and fireproof filler filled on the filling framework, and the fireproof filler comprises the following raw materials in parts by weight: 5-15 parts of glass beads, 2-10 parts of aluminum silicate ceramic fiber cotton, 8-20 parts of aluminum hydroxide and 12-20 parts of epoxy resin.

2. The fire-proof wooden door as claimed in claim 1, wherein the mass ratio of the alumina silicate ceramic fiber cotton to the aluminum hydroxide is 1: (2.5-4.5).

3. The fire resistant wood door as claimed in claim 1, wherein said filling frame is provided with a plurality of independent filling grids, and said fire-proof filler is filled in said filling grids.

4. The fire-resistant wood door as claimed in claim 1, wherein the flame retardant coating (5) is formed by applying a flame retardant coating to the first and second fire-retardant plates and curing the coating;

the flame-retardant coating comprises the following raw materials in parts by weight: 8-20 parts of water, 10-25 parts of waterborne epoxy resin emulsion, 5-12 parts of expanded graphite, 3-10 parts of glass beads and 0.5-1 part of surfactant.

5. The fire-resistant wood door according to claim 4, wherein the mass ratio of the water-based epoxy resin, the expanded graphite and the glass beads is (3-4.5): (1-2): 1.

6. the fire resistant wood door of claim 1, wherein said thermal barrier coating has a thickness of 0.5 mm to 2 mm.

7. A process for manufacturing a fire resistant wood door according to any one of claims 1 to 6, comprising the steps of:

s1, fixing a filling framework on one side of a first fireproof plate (2), and uniformly filling the prepared fireproof filler on the filling framework and compacting to prepare a fireproof filling layer (3);

s2, overlapping the second fireproof plate (4) on the filling framework, and then fixedly connecting the first fireproof plate (2) with the second fireproof plate (4);

s3, uniformly coating the prepared flame-retardant coating on the outer surfaces of the first fireproof plate (2) and the second fireproof plate (4), and curing the flame-retardant coating to form a flame-retardant coating (5) to prepare a rough door plate;

and S4, grinding and polishing the rough door plate, and then assembling the rough door plate with the door frame (1) to obtain the fireproof door.

8. The manufacturing process of a fire-proof wood door as claimed in claim 7, wherein the fire-proof filler is filled by the following method:

firstly, sequentially adding aluminum hydroxide and glass beads into epoxy resin, and uniformly stirring and mixing;

then adding aluminum silicate ceramic fiber cotton and mixing uniformly to the fireproof filler;

and finally, uniformly filling the fireproof filler between the filling framework and the first fireproof plate, and curing the epoxy resin to form a fireproof filling layer.