CN114876334A - Preparation method of door leaf of fireproof door - Google Patents

Preparation method of door leaf of fireproof door Download PDF

Info

Publication number
CN114876334A
CN114876334A CN202210471134.6A CN202210471134A CN114876334A CN 114876334 A CN114876334 A CN 114876334A CN 202210471134 A CN202210471134 A CN 202210471134A CN 114876334 A CN114876334 A CN 114876334A
Authority
CN
China
Prior art keywords
frame
door core
door
door leaf
core material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202210471134.6A
Other languages
Chinese (zh)
Other versions
CN114876334B (en
Inventor
顾骁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ambian Holdings Beijing Co ltd
Original Assignee
Ambian Holdings Beijing Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ambian Holdings Beijing Co ltd filed Critical Ambian Holdings Beijing Co ltd
Priority to CN202210471134.6A priority Critical patent/CN114876334B/en
Publication of CN114876334A publication Critical patent/CN114876334A/en
Application granted granted Critical
Publication of CN114876334B publication Critical patent/CN114876334B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
    • E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/30—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing magnesium cements or similar cements
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/70—Door leaves
    • E06B3/7001—Coverings therefor; Door leaves imitating traditional raised panel doors, e.g. engraved or embossed surfaces, with trim strips applied to the surfaces
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/70—Door leaves
    • E06B3/7015—Door leaves characterised by the filling between two external panels
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/20—Doors, windows, or like closures for special purposes; Border constructions therefor for insulation against noise
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/70—Door leaves
    • E06B3/7015—Door leaves characterised by the filling between two external panels
    • E06B2003/7023—Door leaves characterised by the filling between two external panels of foam type
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/70—Door leaves
    • E06B3/7015—Door leaves characterised by the filling between two external panels
    • E06B2003/7042—Door leaves characterised by the filling between two external panels with a fire retardant layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Special Wing (AREA)
  • Securing Of Glass Panes Or The Like (AREA)

Abstract

The invention belongs to the technical field of constructional engineering, and particularly relates to a method for manufacturing a fireproof door leaf. The technical key points are that the fireproof door leaf consists of a door core, a frame and a decoration panel; the preparation method of the door core comprises the following steps: laying the door core material in a mould; spraying the modified adhesive into the groove structure in a mist form to bond the solid mixtures together in sequence; and curing and forming to obtain the door core. The invention utilizes the micro-expansion effect to lead the door core to generate certain extrusion force to the frame in the curing process and bond the frame material, thus leading chemical bond and extrusion force to be generated between the door core and the frame and further improving the binding force between the door core and the frame.

Description

Preparation method of door leaf of fireproof door
Technical Field
The invention belongs to the technical field of constructional engineering, and particularly relates to a preparation method of a fireproof door leaf.
Background
The door leaf of the traditional fireproof door in the market is of a five-layer structure, and sequentially comprises a decorative board, a glass magnesium board, a calcium silicate board and other fireproof boards, a cork frame, a magnesium oxychloride board door core, a glass magnesium board, a calcium silicate board and other fireproof boards and decorative boards, wherein the cork frame and the magnesium oxychloride board door core which are positioned in the middle layer in the structure are relatively weak parts, and the fireproof door leaf has the defects of short fireproof time, complex manufacturing process, high cost and the like.
In order to overcome the defects, in the prior art, the frame of the door leaf is generally integrally formed, and then the door core is poured in the frame. However, the door core adopts a pouring and curing mode, so that the binding force between the door core and the frame is poor, and the door core is easy to separate from the frame.
In view of the defects of the prior art, the inventor develops a preparation method of the fireproof door leaf based on years of abundant experience and professional knowledge of the materials, and by means of theoretical analysis and research and innovation, the binding force between the frame and the door core and the compression strength of the door core are improved.
Disclosure of Invention
The first purpose of the invention is to provide a preparation method of a fireproof door leaf, which adopts a polyurethane foaming agent to bond light-burned magnesia after curing, so that the door core has excellent fireproof, flame-retardant, heat-preservation and sound-absorption properties; meanwhile, after the polyurethane foaming agent is foamed, the door core forms extrusion force on the door frame, the door core is firmly embedded in the frame, and the binding force between the door core and the door frame is greatly improved.
The technical purpose of the invention is realized by the following technical scheme:
the invention provides a preparation method of a fireproof door leaf, wherein the fireproof door leaf consists of a door core, a frame and a decoration panel;
the preparation method of the door core comprises the following steps:
laying the door core material in a mould; spraying the modified adhesive into the groove structure in a mist form to bond the solid mixtures together in sequence; and curing and forming to obtain the door core.
Further, the preparation method of the fireproof door leaf comprises the following operation steps:
s1, forming a frame;
s2, plugging one side of the through area on the formed frame to form a groove structure;
s3, laying the door core material in the groove body structure;
s4, spraying the modified adhesive into the groove structure in a mist form to bond the solid mixtures together in sequence;
s5, pressing and curing the door core material in the groove structure, and removing the plug in the thickness direction of the door leaf of the combined structure;
s6, putting the door panel into an oven to be cured and molded to obtain a combined structure of the frame and the door core;
and S7, adhering decorative panels on two surfaces of the combined structure in the thickness direction of the door leaf.
Further, the preparation method of the fireproof door leaf comprises the following operation steps:
a1, laying the door core material in a mould;
a2, spraying the modified adhesive into the groove structure in a mist form to bond the solid mixtures together in sequence;
a3, curing and forming to obtain a door core;
and A4, bonding the frame on the door core.
Further, the door core material comprises, by weight, 30-60 parts of light-burned magnesium oxide, 30-60 parts of 40-60% magnesium sulfate solution, 3-5 parts of synthetic fiber and 3-5 parts of rice husk.
Further, in order to make the spraying of the modified adhesive more uniform, a door core material can be spread after a layer of modified adhesive is sprayed inside the groove structure; in order to ensure that the spraying is more uniform, the door core material can be sprayed layer by layer on the basis, namely the door core material is paved in the groove structure layer by layer, and a layer of modified adhesive is sprayed every time one layer is paved. Wherein the magnesium sulfate solution is 40-60% of magnesium sulfate aqueous solution in parts by weight.
Further, the modified adhesive is a water-based polyurethane foaming agent. The polyurethane foaming agent is an adhesive which contains isocyanate (-NCO) and carbamate (-NH-COO-) in molecular bonds and has high polarity and activity. The adhesive is very easy to react with active hydrogen in materials, and has good adhesive force with materials such as foam, wood, plastic, leather, fabric, ceramic, metal, rubber, glass and the like. Meanwhile, the micro-expansion effect can be utilized, the door core generates certain extrusion force to the frame in the curing process, and the frame material is bonded, so that chemical bonds are generated between the door core and the frame, and the bonding force between the door core and the frame is further improved.
Further, in step S4, the spraying amount of the modifying adhesive is calculated by the following formula:
Figure BDA0003622441140000031
wherein, V 2 The unit is L for the spraying amount of the modified adhesive;
v' is the volume of the door core material in step S4, and has a unit of L;
x is the micropore porosity of the door core material after curing and is measured by adopting an adsorption method;
epsilon is the void ratio of the light-burned magnesia when standing still, and is measured by adopting a conventional method;
and n is the expansion coefficient of the modified adhesive at 20 ℃ and is measured by a conventional method.
Because the modified adhesive has a foaming effect, the whole door core can be expanded in the curing process, the whole expansion volume of the door core is the expansion volume of the added modified adhesive, if the addition amount of the modified adhesive is too large, the expansion volume is too large, the door core can be extruded and deformed with the frame, and if the addition amount of the modified adhesive is too small, the door core materials cannot be completely bonded together, or the door core materials are too fluffy, so that the compression strength is reduced.
Therefore, the invention provides the formula to accurately calculate the addition of the modified adhesive, so that the compression strength of the door core material is ensured, and the frame is prevented from being extruded and deformed due to overlarge volume of the door core material.
The principle of the above calculation formula is as follows: according to the preparation method provided by the invention, the door core material is fully paved in the groove of the frame structure, so that when the expansion volume of the polyurethane foaming agent can be completely accommodated by micropores of the door core material and the void ratio among particles, the extrusion force of the door core material to the frame is only provided by the volume added by the polyurethane foaming agent, and the extrusion force not only can not cause the frame to be extruded and deformed, but also can cause the binding force between the door core material and the frame to be stronger.
Further, the pressure of the press molding in step S5 is obtained according to the following calculation formula:
P＝a(x+ε-n) 2 +b(x+ε-n)+1；
wherein P is the pressure of the press molding in step S5, and the unit is 1 atmosphere;
and a and b are coefficient constants which are obtained by inductive calculation according to a linear regression equation.
Further, the frame is made of materials which comprise the following components in parts by weight:
30-40 parts of light-burned magnesium oxide, 40-45 parts of 60% magnesium sulfate solution, 22-25 parts of synthetic fiber and 12-18 parts of rice husk; the molding method of step S1 includes: and pouring the materials into a mold, curing and curing, and removing the mold to obtain the frame.
Further, a is the mass ratio of the rice hulls to the light-burned magnesia in the materials adopted by the frame; and b is the mass ratio of the synthetic fiber in the material adopted by the frame to the synthetic fiber adopted by the door core material.
Because the compressive strength of the frame material and the door core material is closely related to the proportion of the light-burned magnesia, the rice husk and the synthetic fiber in the material, if the content of the light-burned magnesia is high, the compressive strength of the frame material and the door core material is high, and if the content of the synthetic fiber is high, the toughness of the frame material and the door core material is good; therefore, the formula for calculating the pressure is limited according to the ratio of the components, a point with balance can be found in the compressive strength of the frame material and the door core material, and the door core material and the frame material can bear the pressure and ensure the compactness.
When the expansion volume of the polyurethane foaming agent is completely accommodated by the micropores of the light-burned magnesium oxide and the porosity of the door core material, the pressure applied to the door core material during the compression molding is equal to the pressure applied to the frame and the bottom surface by the door core material, and if the pressure is too high, the frame is extruded and deformed by the door core material, so that the pressure is accurately calculated by the method.
Further, the grain diameter of the rice hulls is 0.2-0.4 mm.
Furthermore, the synthetic fiber is polyurethane fiber, and the length of the synthetic fiber is 2-5 mu m. The adhesion force between the particles of the door core material can be improved due to the addition of the polyurethane fibers, and meanwhile, overlarge foam generated by the polyurethane foaming agent can be shrunk, so that the compressive strength is prevented from being influenced by the overlarge polyurethane foam of the local door core material.
Further, the frame in step S1 is a mixed and solidified structure of the inorganic cementing material and the light material. The mixed curing structure of the inorganic cementing material and the light material can generate stronger chemical bonds with the polyurethane foaming agent, and particularly, when the inorganic cementing material adopts the same light-burned magnesium oxide as that in the door core material, the inorganic cementing material can be tightly combined with the polyurethane foaming agent, and the compressive strength of the inorganic cementing material is stronger.
Furthermore, the frame is of an integrated structure. When the frame is of an integral structure, the frame has better performance of resisting the extrusion of the door core material, is not easy to scatter, and has stronger bonding force with the door core material.
Further, the modified adhesive is an aqueous silicon dioxide modified polyurethane foaming agent. The aqueous silicon dioxide modified polyurethane foaming agent has stronger moisture absorption stability.
In conclusion, the invention has the following beneficial effects:
according to the invention, the light-burned magnesium oxide is used as a main material, the polyurethane foaming agent is used as an adhesive, on one hand, the light-burned magnesium oxide can be bonded together, a high-strength hard board is formed after curing, micropores of the magnesium oxide can be filled, the micropores are sealed, and the moisture-proof and flame-retardant performances are improved. Meanwhile, the micro-expansion effect can be utilized, the door core generates certain extrusion force to the frame in the curing process, and the frame material is bonded, so that chemical bonds and extrusion force are generated between the door core and the frame, and the binding force between the door core and the frame is further improved.
Detailed Description
To further illustrate the technical means and effects adopted by the present invention to achieve the predetermined objects, the present invention provides a method for manufacturing a door leaf of a fire door, and the specific embodiments, features and effects thereof are described in detail below.
In this embodiment:
the grain diameter of the rice hull is 0.2-0.4 mm;
the synthetic fiber is polyurethane fiber, and the length of the synthetic fiber is 2-5 mu m.
It should be noted that the raw materials used in the present embodiment are all commercially available, and the specific sources are as follows:
light-burned magnesium oxide: liaoning Chengchen magnesium refractory manufacturing Ltd;
40-60% magnesium sulfate solution: jinhui chemical plant, Changsha county, Hunan;
polyurethane fiber: jiangsu Zhipai chemical Co., Ltd;
rice hull: shijiazhuang Xueyun agricultural products, Inc.
Example 1: preparation method of door leaf of fireproof door
The fireproof door leaf provided by the embodiment comprises a frame, a door core poured in the frame and two surface attaching veneer plates in the thickness direction of the door leaf.
The preparation method comprises the following operation steps:
s1, forming a frame;
s2, plugging one side of the through area on the formed frame to form a groove structure;
s3, laying the door core material in the groove structure;
s4, spraying the modified adhesive into the groove structure in a mist form to bond the solid mixtures together in sequence;
s5, pressing the door core material in the groove structure, solidifying for 60min for forming, and removing the plug in the thickness direction of the door leaf of the combined structure;
s6, placing the door panel into an oven to be cured and molded to obtain a combined structure of the frame and the door core, wherein the curing temperature is 60 ℃, and the curing time is 30 min;
and S7, adhering decorative panels on two surfaces of the combined structure in the thickness direction of the door leaf.
Wherein, the door core material comprises 50 parts of light-burned magnesium oxide, 40 parts of 40% magnesium sulfate solution, 4 parts of synthetic fiber and 3 parts of rice husk by weight; the modified adhesive is a water-based silicon dioxide modified polyurethane foaming agent, the addition amount of the modified adhesive is 12% of the mass of the door core material, and the modified adhesive is purchased from multiple commercial and trade company of Jinan and Jippon.
Specifically, the frame is made of materials which comprise the following components in parts by weight:
30 parts of light-burned magnesium oxide, 40 parts of 60% magnesium sulfate solution, 23 parts of synthetic fiber and 15 parts of rice husk; the molding method of step S1 includes: and pouring the materials into a mold, curing and curing, and removing the mold to obtain the frame.
Example 2: preparation method of door leaf of fireproof door
The fireproof door leaf provided by the embodiment comprises a frame, a door core poured in the frame and a door leaf thickness direction-oriented two-surface laminating veneer.
The preparation method comprises the following operation steps:
s1, forming a frame;
s2, plugging one side of the through area on the formed frame to form a groove structure;
s3, laying the door core material in the groove body structure;
s4, spraying the modified adhesive into the groove structure in a mist form to bond the solid mixtures together in sequence;
s5, pressing the door core material in the groove structure, solidifying for 60min to form under the pressure of 0.1MPa, and removing the plug in the thickness direction of the door leaf of the combined structure;
s6, putting the door core and the frame into an oven to be cured and molded to obtain a combined structure of the frame and the door core, wherein the curing temperature is 60 ℃, and the curing time is 30 min;
and S7, adhering decorative panels on two surfaces of the combined structure in the thickness direction of the door leaf.
Wherein, the door core material comprises 60 parts of light-burned magnesium oxide, 60 parts of 40% magnesium sulfate solution, 4 parts of synthetic fiber and 3 parts of rice husk by weight; the modified adhesive is an aqueous silicon dioxide modified polyurethane foaming agent and is purchased from commercial and trade company Limited of Jinan Peng.
Wherein the addition amount of the waterborne silicon dioxide modified polyurethane foaming agent is calculated according to the following formula:
Figure BDA0003622441140000081
wherein, V 2 The unit is L for the spraying amount of the modified adhesive;
v' is the volume of the door core material in step S4, and has a unit of L;
x is the micropore porosity of the door core material after curing, and is measured by an adsorption method, and the porosity is 25% in the embodiment;
epsilon is the void ratio of the light-burned magnesia when standing still, and is measured by a conventional method, and the porosity is 30 percent in the embodiment;
n is the expansion coefficient of the aqueous silicon dioxide modified polyurethane foaming agent at 20 ℃, and is measured by a conventional method, and is 30 in the embodiment.
The volume ratio of the door core material to the aqueous silica-modified polyurethane foaming agent was 54.5 by substituting the above formula.
Specifically, the frame is made of materials which comprise the following components in parts by weight:
30 parts of light-burned magnesium oxide, 40 parts of 60% magnesium sulfate solution, 23 parts of synthetic fiber and 15 parts of rice husk; the molding method of step S1 includes: and pouring the materials into a mold, curing and curing, and removing the mold to obtain the frame.
Example 3: preparation method of door leaf of fireproof door
The fireproof door leaf provided by the embodiment comprises a frame, a door core poured in the frame and two surface attaching veneer plates in the thickness direction of the door leaf.
The preparation method comprises the following operation steps:
s1, forming a frame;
s2, plugging one side of the through area on the formed frame to form a groove structure;
s3, laying the door core material in the groove body structure;
s4, spraying the modified adhesive into the groove structure in a mist form to bond the solid mixtures together in sequence;
s5, pressing the door core material in the groove structure, solidifying for 60min for forming, and removing the plug in the thickness direction of the door leaf of the combined structure;
s6, putting the door core and the frame into an oven to be cured and molded to obtain a combined structure of the frame and the door core, wherein the curing temperature is 60 ℃, and the curing time is 30 min;
and S7, adhering veneer on two surfaces of the combined structure in the thickness direction of the door leaf.
Wherein, the door core material comprises 30 parts of light-burned magnesium oxide, 30 parts of 40% magnesium sulfate solution, 4 parts of synthetic fiber and 3 parts of rice husk by weight; the modified adhesive is an aqueous silicon dioxide modified polyurethane foaming agent and is purchased from multiple commercial and trade company Limited of Jinan Peng.
Wherein the addition amount of the waterborne silicon dioxide modified polyurethane foaming agent is calculated according to the following formula:
Figure BDA0003622441140000091
wherein, V 2 The unit is L for the spraying amount of the modified adhesive;
v' is the volume of the door core material in step S4, and has a unit of L;
x is the micropore porosity of the door core material after curing, measured by an adsorption method, and is 28% in the embodiment;
epsilon is the void ratio of the light-burned magnesia when standing still, and is measured by a conventional method, and the porosity is 30 percent in the embodiment;
n is the expansion coefficient of the aqueous silicon dioxide modified polyurethane foaming agent at 20 ℃, and is measured by a conventional method, and is 30 in the embodiment.
By substituting the above formula, the volume ratio of the door core material to the aqueous silica-modified polyurethane foaming agent was 51.7.
And, the pressure of the press mold in step S5 is calculated according to the following formula:
P＝a(x+ε-n) 2 +b(x+ε-n)+1；
wherein P is the pressure of the press molding in step S5, and the unit is 1 atmosphere;
a and b are coefficient constants, which are obtained by induction according to a linear equation, and specifically comprise: a is the mass ratio of rice hulls to light-burned magnesia in the materials adopted by the frame; and b is the mass ratio of the synthetic fiber in the material adopted by the frame to the synthetic fiber adopted by the door core material, wherein a is 0.2, and b is 5.75.
Calculating to obtain: p is 3.28 atmospheres, and the pressure is 0.328MPa in terms of pressure.
Specifically, the frame is made of materials which comprise the following components in parts by weight:
30 parts of light-burned magnesium oxide, 40 parts of 60% magnesium sulfate solution, 23 parts of synthetic fiber and 15 parts of rice husk; the molding method of step S1 includes: and pouring the materials into a mold, curing and curing, and removing the mold to obtain the frame.
Example 4: preparation method of door leaf of fireproof door
The fireproof door leaf provided by the embodiment comprises a frame, a door core poured in the frame and two surface attaching veneer plates in the thickness direction of the door leaf.
The preparation method comprises the following operation steps:
s1, forming a frame, wherein the frame is a mixed curing structure of an inorganic cementing material and a light material and is integrally formed;
s2, plugging one side of the through area on the formed frame to form a groove structure;
s3, laying the door core material in the groove body structure;
s4, spraying the modified adhesive into the tank structure in a mist form to bond the solid mixtures together in sequence, spraying a layer of modified adhesive inside the tank structure, and spraying layer by layer, namely spreading the door core material in the tank structure layer by layer, wherein one layer of modified adhesive is sprayed every time when one layer is sprayed;
s5, pressing the door core material in the groove structure, solidifying for 60min for forming, and removing the plug in the thickness direction of the door leaf of the combined structure;
s6, putting the door core and the frame into an oven to be cured and molded to obtain a combined structure of the frame and the door core, wherein the curing temperature is 60 ℃, and the curing time is 30 min;
and S7, adhering decorative panels on two surfaces of the combined structure in the thickness direction of the door leaf.
Wherein the door core material comprises 50 parts of light-burned magnesium oxide, 55 parts of 40% magnesium sulfate solution, 4 parts of synthetic fiber and 5 parts of rice husk; the modified adhesive is an aqueous silicon dioxide modified polyurethane foaming agent and is purchased from commercial and trade company Limited of Jinan Peng.
Wherein the addition amount of the waterborne silicon dioxide modified polyurethane foaming agent is calculated according to the following formula:
Figure BDA0003622441140000111
wherein, V 2 The unit is L for the spraying amount of the modified adhesive;
v' is the volume of the door core material in step S4, and has a unit of L;
x is the micropore porosity of the door core material after curing, and is measured by an adsorption method, and the porosity is 25% in the embodiment;
epsilon is the void ratio of the light-burned magnesia when standing still, and is measured by a conventional method, and the porosity is 30 percent in the embodiment;
n is the expansion coefficient of the aqueous silicon dioxide modified polyurethane foaming agent at 20 ℃, and is measured by a conventional method, and is 30 in the embodiment.
The volume ratio of the door core material to the aqueous silica-modified polyurethane foaming agent was 54.5 by substituting the above formula.
And, the pressure of the press mold in step S5 is calculated according to the following formula:
P＝a(x+ε-n) 2 +b(x+ε-n)+1；
wherein P is the pressure of the press molding in step S5, and the unit is 1 atmosphere;
a and b are coefficient constants, and are obtained by inductive calculation according to a linear regression equation, wherein a is the mass ratio of the rice hull to the light-burned magnesia in the materials adopted by the frame; b is the mass ratio of the synthetic fiber in the material used for the frame to the synthetic fiber used for the door core material, a is 0.2, and b is 5.75.
Calculating to obtain: p is 2.28 atmospheres, and 0.228MPa in terms of pressure.
Specifically, the material adopted by the frame comprises the following components in percentage by mass:
30 parts of light-burned magnesium oxide, 40 parts of 60% magnesium sulfate solution, 23 parts of synthetic fiber and 15 parts of rice husk; the molding method of step S1 includes: and pouring the materials into a mold, curing and curing, and removing the mold to obtain the frame.
Example 5: preparation method of door leaf of fireproof door
The fireproof door leaf provided by the embodiment comprises a frame, a door core and two surface-attached decorative panels in the door leaf thickness direction, and specifically comprises the following operation steps:
a1, laying the door core material in a mould;
a2, spraying the modified adhesive into the groove structure in a mist form to bond the solid mixtures together in sequence;
a3, curing and forming to obtain a door core;
and A4, bonding the frame on the door core.
Wherein, the door core material comprises 50 parts of light-burned magnesium oxide, 55 parts of 60% magnesium sulfate solution, 4 parts of synthetic fiber and 5 parts of rice husk by weight; the modified adhesive is a water-based silicon dioxide modified polyurethane foaming agent and is purchased from commercial and trade company Limited of Jinan Peng;
specifically, the material adopted by the frame comprises the following components in percentage by mass:
30 parts of light-burned magnesium oxide, 40 parts of 60% magnesium sulfate solution, 23 parts of synthetic fiber and 15 parts of rice husk.
In step A4, the glue is PUR glue.
Comparative example 1: preparation method of door leaf of fireproof door
The fireproof door leaf provided by the embodiment comprises a frame, a door core poured in the frame and two surface attaching veneer plates in the thickness direction of the door leaf.
S1, forming a frame, wherein the frame is a mixed curing structure of an inorganic cementing material and a light material and is integrally formed;
s2, plugging one side of the through area on the formed frame to form a groove structure;
s3, laying the door core material in the groove body structure;
s4, spraying the modified adhesive into the groove structure in a mist form to bond the solid mixtures together in sequence;
s5, pressing the door core material in the groove structure, solidifying for 60min for forming, and removing the plug in the thickness direction of the door leaf of the combined structure;
s6, putting the door core and the frame into an oven to be cured and molded to obtain a combined structure of the frame and the door core, wherein the curing temperature is 60 ℃, and the curing time is 30 min;
and S7, adhering decorative panels on two surfaces of the combined structure in the thickness direction of the door leaf.
Wherein the door core material comprises 50 parts of Portland cement, 55 parts of 60% magnesium sulfate solution, 4 parts of synthetic fiber and 5 parts of rice husk.
Specifically, the material adopted by the frame comprises the following components in percentage by mass:
30 parts of light-burned magnesium oxide, 40 parts of 60% magnesium sulfate solution, 23 parts of synthetic fiber and 15 parts of rice husk; the molding method of step S1 includes: and pouring the materials into a mold, curing and curing, and removing the mold to obtain the frame.
And (3) performance testing:
the performance test was performed on the fireproof door leaves of examples 1 to 5 and comparative example 1, and the results were as follows:
TABLE 1 Performance test results of the fireproof door leaves of examples 1 to 5 and comparative example 1
Fire rating Door core peel strength/MPa Door leaf compressive strength/MPa
Example 1 A1 Cracked but not peeled from the frame at 0.582MPa 0.59
Example 2 A1 Cracked but not peeled from the frame at 0.687MPa 0.68
Example 3 A1 Disintegrated but not peeled from the frame at 0.743MPa 0.74
Example 4 A1 Cracked but not peeled from the frame at 0.823MPa 0.82
Example 5 A1 Shatter at 0.781MPa but not peel from the frameSeparation device 0.73
Comparative example 1 A2 Peeling off at 0.345MPa 0.53
The method for testing the peeling strength of the door core comprises the following steps:
the frame which is the same as the frame of the door leaf is supported below the door leaf, four sides of the frame are aligned, a press is adopted to vertically press the door core downwards in the middle and four corners of the door core respectively, the actual pressure of the press is recorded when the door core is cracked or peeled off from the frame, and the average value is obtained.
Testing the fire-retardant grade compressive strength: testing according to GB 12955-2008. Testing of compressive strength: testing according to GB/T8813-2020.
According to comparison between the embodiment 1 and the embodiment 2, the accurate ratio of the adding volume of the door core material and the adding volume of the waterborne silica modified polyurethane foaming agent is obtained after calculation through the calculation formula provided by the invention, and in the preparation process, the adding volume of the waterborne silica modified polyurethane foaming agent can be obtained through the adding volume of the door core material, so that the compression strength of the door leaf is greatly improved under the condition that the frame is ensured not to deform.
As can be seen from comparison between the embodiment 2 and the embodiment 3, the compressive strength of the door leaf can be further improved by the pressure used in the press forming stage obtained after calculation by the calculation formula provided by the present invention.
According to the comparison between the embodiment 3 and the embodiment 4, when the preparation method that the door leaf is tiled layer by layer and the adhesive is sprayed layer by layer is adopted, the compression strength of the door leaf can be further improved.
According to the comparison between the comparative example and the example 1, the light-burned magnesium oxide + modified adhesive provided by the invention is used as a door core material, so that the compression strength and the fire-proof grade of a door leaf are greatly improved, the binding force between the door core and a frame is improved, and the door core is prevented from being peeled.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The preparation method of the fireproof door leaf is characterized in that the fireproof door leaf consists of a door core, a frame and a decoration panel;
the preparation method of the door core comprises the following steps:
laying the door core material in a mould; spraying the modified adhesive into the groove structure in a mist form to bond the solid mixtures together in sequence; and curing and forming to obtain the door core.
2. The method for manufacturing a fire door leaf as claimed in claim 1, wherein the mold is made of a frame, and the method for manufacturing a fire door leaf comprises the following steps:
s1, forming a frame;
s2, plugging one side of the through area on the formed frame to form a groove structure;
s3, laying the door core material in the groove body structure;
s4, spraying the modified adhesive into the groove structure in a mist form to bond the solid mixtures together in sequence;
s5, pressing and curing the door core material in the groove structure, and removing the plug in the thickness direction of the door leaf of the combined structure;
s6, putting the door panel into an oven to be cured and molded to obtain a combined structure of the frame and the door core;
and S7, adhering decorative panels on two surfaces of the combined structure in the thickness direction of the door leaf.
3. The method for manufacturing a fire door leaf according to claim 1, characterized in that it comprises the following operative steps:
a1, laying the door core material in a mould;
a2, spraying the modified adhesive into the groove structure in a mist shape to bond the solid mixtures together in sequence;
a3, curing and forming to obtain a door core;
and A4, bonding the frame on the door core.
4. The method for preparing a fireproof door leaf according to any one of claims 1 to 3, wherein the door core material comprises 30 to 60 parts by weight of light-burned magnesium oxide, 30 to 60 parts by weight of 40 to 60% magnesium sulfate solution, 3 to 5 parts by weight of synthetic fiber and 3 to 5 parts by weight of rice husk.
5. The method for manufacturing a fireproof door leaf as claimed in claim 1, wherein the modified adhesive is an aqueous polyurethane foaming agent.
6. The method for manufacturing a door leaf of a fire door as claimed in claim 4, wherein in step S4, the spraying amount of the modifying adhesive is calculated by the following formula:
Figure FDA0003622441130000021
wherein, V 2 The unit is L for the spraying amount of the modified adhesive;
v' is the volume of the door core material in step S4, and has a unit of L;
x is the micropore porosity of the door core material after curing;
ε is the void fraction of light-burned magnesia at rest;
and n is the expansion rate of the modified adhesive.
7. The method as claimed in claim 6, wherein the pressure of the press forming in step S5 is obtained according to the following calculation formula:
P＝a(x+ε-n) 2 +b(x+ε-n)+1；
wherein P is the pressure of the press molding in step S5, and the unit is 1 atmosphere;
and a and b are coefficient constants which are obtained by inductive calculation according to a linear regression equation.
8. The method of manufacturing a fire door leaf as claimed in claim 2 or 3, wherein the frame is a hybrid cured structure of inorganic cementitious material and lightweight material.
9. The method of making a fire door leaf as recited in claim 2, wherein the frame is a unitary structure.
10. The method for manufacturing a fireproof door leaf as claimed in claim 5, wherein the modified adhesive is an aqueous silica modified polyurethane foaming agent.
CN202210471134.6A 2022-04-28 2022-04-28 Preparation method of fireproof door leaf Active CN114876334B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210471134.6A CN114876334B (en) 2022-04-28 2022-04-28 Preparation method of fireproof door leaf

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210471134.6A CN114876334B (en) 2022-04-28 2022-04-28 Preparation method of fireproof door leaf

Publications (2)

Publication Number Publication Date
CN114876334A true CN114876334A (en) 2022-08-09
CN114876334B CN114876334B (en) 2024-02-20

Family

ID=82673954

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210471134.6A Active CN114876334B (en) 2022-04-28 2022-04-28 Preparation method of fireproof door leaf

Country Status (1)

Country Link
CN (1) CN114876334B (en)

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09203277A (en) * 1996-01-29 1997-08-05 Ykk Architect Prod Kk Fitting
US6068802A (en) * 1998-07-24 2000-05-30 The Stanley Works Method for making foam filled doors and apparatus therefor
US6253527B1 (en) * 1996-07-10 2001-07-03 Royal Ecoproducts Limited Process of making products from recycled material containing plastics
DE10247237A1 (en) * 2002-10-10 2004-05-06 Heiko Ritter Sandwich construction fire-prevention wooden door has outer panels either side of a mineral-based panel and expansion strip in folding zone
EP2189612A2 (en) * 2008-11-24 2010-05-26 Nan Ya Plastics Corporation A fireproof door panel structure
CN201723110U (en) * 2010-05-17 2011-01-26 余河新 Wood heat-insulation fire door
CN102080490A (en) * 2010-12-25 2011-06-01 欧创塑料建材(浙江)有限公司 Polyurethane composite material energy-saving window frame or door leaf frame or door profile or door sheet
CN103821517A (en) * 2014-01-14 2014-05-28 湖南柯盛新材料有限公司 Strip block stone filling reinforcing method in marble exploitation
CN103982121A (en) * 2014-05-23 2014-08-13 罗展华 Manufacture method of fireproof door
CN104946059A (en) * 2014-11-18 2015-09-30 湖南瑞石科技发展有限公司 Anticorrosive paint composition comprising modified ceramic waste and preparation method thereof
CN110342919A (en) * 2019-05-29 2019-10-18 浙江大学 A kind of anti-corrosive metal coating that photo-catalyst is mould proof and its coating method
CN110382579A (en) * 2017-04-28 2019-10-25 雷克蒂塞尔汽车系统有限责任公司 Composite elastic polyurethane epidermis
CN112983226A (en) * 2021-03-25 2021-06-18 安必安新材料集团有限公司 Fireproof door leaf and processing technology thereof
CN113372038A (en) * 2020-03-10 2021-09-10 廊坊广通电子设备有限公司 Silica aerogel polyurethane foam rubber composite thermal insulation material and preparation method thereof
CN113980354A (en) * 2021-12-06 2022-01-28 湖南航天三丰科工有限公司 Modified nano SiO for building aluminum alloy template coating2Fluorine-silicon modified coating and preparation method and application thereof

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09203277A (en) * 1996-01-29 1997-08-05 Ykk Architect Prod Kk Fitting
US6253527B1 (en) * 1996-07-10 2001-07-03 Royal Ecoproducts Limited Process of making products from recycled material containing plastics
US6068802A (en) * 1998-07-24 2000-05-30 The Stanley Works Method for making foam filled doors and apparatus therefor
DE10247237A1 (en) * 2002-10-10 2004-05-06 Heiko Ritter Sandwich construction fire-prevention wooden door has outer panels either side of a mineral-based panel and expansion strip in folding zone
EP2189612A2 (en) * 2008-11-24 2010-05-26 Nan Ya Plastics Corporation A fireproof door panel structure
CN201723110U (en) * 2010-05-17 2011-01-26 余河新 Wood heat-insulation fire door
CN102080490A (en) * 2010-12-25 2011-06-01 欧创塑料建材(浙江)有限公司 Polyurethane composite material energy-saving window frame or door leaf frame or door profile or door sheet
CN103821517A (en) * 2014-01-14 2014-05-28 湖南柯盛新材料有限公司 Strip block stone filling reinforcing method in marble exploitation
CN103982121A (en) * 2014-05-23 2014-08-13 罗展华 Manufacture method of fireproof door
CN104946059A (en) * 2014-11-18 2015-09-30 湖南瑞石科技发展有限公司 Anticorrosive paint composition comprising modified ceramic waste and preparation method thereof
CN110382579A (en) * 2017-04-28 2019-10-25 雷克蒂塞尔汽车系统有限责任公司 Composite elastic polyurethane epidermis
CN110342919A (en) * 2019-05-29 2019-10-18 浙江大学 A kind of anti-corrosive metal coating that photo-catalyst is mould proof and its coating method
CN113372038A (en) * 2020-03-10 2021-09-10 廊坊广通电子设备有限公司 Silica aerogel polyurethane foam rubber composite thermal insulation material and preparation method thereof
CN112983226A (en) * 2021-03-25 2021-06-18 安必安新材料集团有限公司 Fireproof door leaf and processing technology thereof
CN113980354A (en) * 2021-12-06 2022-01-28 湖南航天三丰科工有限公司 Modified nano SiO for building aluminum alloy template coating2Fluorine-silicon modified coating and preparation method and application thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
张超云等: "《药剂学》", 辽宁大学出版社有限责任公司, pages: 25 - 26 *

Also Published As

Publication number Publication date
CN114876334B (en) 2024-02-20

Similar Documents

Publication Publication Date Title
CN101725311A (en) Pearlite fiber composite fire-proof heat insulation board
KR101468780B1 (en) Eco building interior boards and method for manufacturing thereof
CN102011539A (en) Novel wood fireproof door and preparation method
CN102900334A (en) Novel inorganic fireproof door and manufacturing method thereof
CN108795025A (en) A kind of open air polyurethane composite plate and preparation method thereof
WO2021184285A1 (en) Novel reinforced and toughened mgo substrate, preparation method, and composite board having substrate
CN106965269A (en) A kind of formaldehydeless flame-retardant plywood and preparation method thereof
CN105365002A (en) Bamboo plywood machining process based on unfolded bamboo curtain face layer
CN205997441U (en) Thermal insulation building exterior wall composite multilayer board
CN114876334A (en) Preparation method of door leaf of fireproof door
CN101812894B (en) Environment friendly light-weight composite keel plate
CN205936241U (en) Multi -functional house ornamentation is with compound door plant
CN104929333A (en) Waterproof panel and manufacturing method thereof
CN109720021B (en) Preparation process of environment-friendly cabinet board
CA2958098A1 (en) Flame-retardant lightweight structural core and manufacturing method therefor
CN114685138B (en) Inorganic adhesive, flame-retardant OSB composite board using inorganic adhesive and preparation method
CN107718842B (en) Based on graphene and nonmetallic tailings fretting map science and technology wood plank and preparation method thereof
CN109720058A (en) HDPC thick china
CN101117031A (en) Novel metalloid composite panel
CN109249660A (en) A kind of composite board and its manufacturing method
KR102357249B1 (en) Ultra lightweight high strength low temperature self-hardening inorganic nonflammable board and its manufacturing method
JPS6264544A (en) Improved manufacture of composite material
CN107298572A (en) A kind of biomass gelling composite floor board and preparation method thereof
WO2007134524A1 (en) A method for preparing a wood-based formwork and the formwork prepared from the method
CN106696045B (en) The hollow microsphere particieboard and its manufacturing method of vacuum tube are set in a kind of

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant