CN215979045U - Door core structure and door core comprising same - Google Patents
Door core structure and door core comprising same Download PDFInfo
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- CN215979045U CN215979045U CN202023298553.XU CN202023298553U CN215979045U CN 215979045 U CN215979045 U CN 215979045U CN 202023298553 U CN202023298553 U CN 202023298553U CN 215979045 U CN215979045 U CN 215979045U
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Abstract
The utility model provides a door core structure and a door core comprising the same, wherein the door core structure comprises a composite board, the composite board comprises a fire-resistant board, a bonding layer and a fire-resistant board which are sequentially arranged, the door core structure also comprises a binding belt for binding the composite board, the binding belt is fixed in a groove of the door core structure, the door core structure has strong fire resistance, simple and compact structure and safety and stability, and the door core comprising the door core structure can be widely applied to the field of fire prevention.
Description
Technical Field
The utility model relates to the technical field of fire-proof devices, in particular to a door core structure and a door core comprising the same.
Background
The fireproof door is a door which can meet the requirements of fire-resistant stability, integrity and heat insulation within a certain time, is a fireproof partition with certain fire resistance arranged in a fireproof partition room, an evacuation staircase, a vertical shaft and the like, has the functions of preventing fire spreading and smoke diffusion besides the function of a common door, and can prevent the fire spreading within a certain time to ensure the evacuation of people.
The fireproof door core is a key component unit capable of achieving the effects of fire resistance, heat insulation, smoke resistance and the like in the fireproof door, products related to the fireproof door core are frequently found on the market at present, the filling material of the door core comprises vermiculite, aluminum silicate cotton and a perlite fireproof plate, wherein rock wool and aluminum silicate can cause dust pollution and seriously harm the health of people, and the perlite has good fireproof effect, high price, high density and can generate dust in production.
CN201367830Y discloses a novel fireproof door core, which comprises a frame body, filling plates and a panel, wherein a plurality of filling plates are arranged in the frame body, a gap between adjacent filling plates is coated with fireproof glue, and the front and back of the frame body provided with the filling plates are sealed with the panel through the fireproof glue; the filling plate is an irregular-shaped leftover material glass magnesium fireproof lath or glass magnesium fireproof plate, but the fireproof door core has a complex structure.
CN202325119U discloses a structure is inseparable, intensity is high, fire prevention heat-proof quality is stable high strength fire door core, comprises door core, fire prevention fibre web, steel door core angle frame, link up vertically and horizontally between upper perlite door core and the lower floor's perlite door core and lay into one deck fire prevention fibre web, two-layer perlite PLASTIC LAMINATED will prevent fire the fibre web and sandwich in the centre, make up into whole door core, the screw passes through the screw hole with whole door core and triangle-shaped steel door core angle frame fixed connection, nevertheless fire door core structure is complicated.
CN206636445U discloses a door core plate structure of a fire door, which comprises a fire door embedded frame, crossed reinforcing ribs and a fire-proof substrate; crossed reinforcing ribs are arranged inside the fireproof door embedded frame, and fireproof substrates are arranged inside the crossed reinforcing ribs; a perlite fireproof plate is arranged in the middle of the fireproof substrate, the upper end of the perlite fireproof plate is connected with a reinforcing plate through a rivet, and a metal decorative plate is arranged at the upper end of the reinforcing plate; the lower extreme of pearlite PLASTIC LAMINATED is provided with net prestressing force board, and the lower extreme of net prestressing force board is provided with metal decking, nevertheless the fire door core structure is complicated.
Therefore, there is a need to develop a door core structure with simple structure and good fireproof performance.
SUMMERY OF THE UTILITY MODEL
In view of the problems in the prior art, the utility model provides a door core structure, which comprises a fire-resistant plate, a bonding layer and a fire-resistant plate which are sequentially arranged, and simultaneously, a binding belt is adopted for binding.
In order to achieve the purpose, the utility model adopts the following technical scheme:
in a first aspect, the present invention provides a door core structure comprising a composite panel; the composite board comprises a fire-resistant board, an adhesive layer and a fire-resistant board which are arranged in sequence; the door core structure further comprises a binding tape for binding the composite board.
The door core structure comprises a fire-resistant plate, an adhesive layer and a fireproof plate, wherein the adhesive layer is coated between the fire-resistant plate and the fireproof plate to form a composite plate, the composite plate is fixed by a binding tape to further reinforce the door core structure, and the door core structure can be tightly attached under various temperature alternation conditions by using the combination of a binder and the binding tape, so that the safety and the stability of the use and the installation of the door core structure are improved.
Preferably, the thickness of the refractory plate is 12 to 17mm, and may be, for example, 12mm, 12.5mm, 13mm, 13.5mm, 14mm, 14.5mm, 15mm, 15.5mm, 16mm, 16.5mm, 17mm, or the like.
Preferably, the thickness of the bonding layer is 1-2 mm, and may be 1mm, 1.2mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 2mm, or the like, for example.
Preferably, the thickness of the fireproof plate is 12-20 mm, for example, 12mm, 12.5mm, 13mm, 13.5mm, 14mm, 14.5mm, 15mm, 15.5mm, 16mm, 16.5mm, 17mm, 17.5mm, 18mm, 18.5mm, 19mm, 19.5mm or 20mm, etc.
Preferably, the ties tie the composite panel by encircling the fire resistant panel face, the fire resistant panel face and the sides of the fire resistant and fire resistant panels of the composite panel.
Preferably, the cable tie is in a shape of a Chinese character jing on the fireproof plate surface of the composite plate.
Preferably, the ribbon is in a shape of a Chinese character jing on the refractory plate surface of the composite plate.
Preferably, the ties are arranged in parallel on the sides of the fire protection plate and the fire resistant plate in the composite plate.
The door core structure is bound in a # -shaped manner, so that the fixing requirement meeting the requirement can be met under the condition of using fewer binding belts, and the door core structure can be tightly attached.
Preferably, the vertical distance between the band and the edge of the composite plate is 12-20% of the length of the edge of the composite plate intersected with the band, for example, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20% or the like can be achieved.
According to the utility model, the vertical distance from the binding belt to the edge of the composite plate is 12-20% of the side length of the composite plate intersected with the binding belt, and when the binding belt binds the composite plate, the composite plate is uniformly stressed on each surface, so that the safety and the stability are improved.
Preferably, the surface of the composite plate is provided with a groove for fixing a cable tie.
The door core structure is provided with the groove, the ribbon is fixed in the groove, the ribbon can be prevented from sliding, the thickness of the ribbon is smaller than or equal to the depth of the groove, and the safety and the stability of the door core structure are improved.
Preferably, the groove encircles the fire protection deck, the fire protection deck and the sides of the fire protection and fire protection decks of the composite panel.
Preferably, the groove is in a shape like a Chinese character jing on the fireproof plate surface of the composite plate.
Preferably, the grooves are in a shape like a Chinese character jing on the refractory plate surface of the composite plate.
Preferably, the grooves are arranged in parallel on the side faces of the fire-proof plate and the fire-resistant plate in the composite plate.
Preferably, the vertical distance from the groove to the edge of the composite plate is 12-20% of the length of the edge of the composite plate intersected with the groove, and can be 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20% or the like.
Preferably, the width of the groove is 20-30 mm, for example, 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm or 30mm, etc.
Preferably, the depth of the groove is 0.5-2 mm, such as 0.5mm, 0.6mm, 0.8mm, 1mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2mm, etc.
The utility model provides a preparation method of the door core structure, which comprises the following steps:
(1) arranging a bonding layer between the fire-resistant plate and the fireproof plate to obtain a composite plate;
(2) and binding a binding tape on the surface of the composite board to obtain the door core structure.
According to the utility model, the bonding layer is arranged between the fire-resistant plate and the fireproof plate, so that the purpose of bonding the fire-resistant plate and the fireproof plate is exerted, and the composite plate is obtained; the form that utilizes binder and ribbon to combine satisfies under the condition of various temperature alternations, and door core structure can both closely laminate, increases security and stability to the use and the installation of door core structure.
Preferably, step (2) comprises: and arranging a groove on the surface of the composite board.
The composite board is provided with a groove on the surface, the groove is in a shape like a Chinese character jing on the fireproof board surface of the composite board, the fireproof board is in a shape like a Chinese character jing on the fireproof board surface of the composite board, and the fireproof board in the composite board are arranged in parallel on the side surfaces of the fireproof board; and fixing the ribbon in the groove to bind the composite plate to obtain the door core structure.
Preferably, the cable tie is fixed in the groove and stands still to obtain the door core structure.
Preferably, the standing time is 12-48 h, for example, 12h, 14h, 15h, 18h, 20h, 22h, 25h, 28h, 30h, 33h, 35h, 28h, 40h, 43h, 45h or 48h, etc.
The utility model adopts standing to ensure that the binding belt is more fully contacted with the fireproof plate and the fireproof plate, and the door core structure is better fixed.
In a second aspect, the present invention provides a door core comprising the door core structure of the first aspect.
The door core structure is used for preparing the door core, and the prepared door core has the advantages of simple and compact structure, strong fire resistance, safety and stability.
Preferably, the door core further comprises a steel plate arranged on the outer surface of the door core structure.
According to the utility model, a plurality of door core structures can be arranged on the same plane, and the steel plates are arranged on the outer surfaces of the door core structures to obtain the door cores, so that a supporting effect can be provided for the door core structures.
Preferably, the thickness of the steel plate is 0.8-1.5 mm, for example, 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm or 1.5 mm.
The door core can be applied to the field of fire prevention due to the compact structure and high temperature resistance, can be tightly attached under various temperature alternation conditions by utilizing the combination of the binding belt and the bonding layer, and has the advantages of compact structure, high safety and high stability.
Compared with the prior art, the utility model has at least the following beneficial effects:
according to the door core structure provided by the utility model, the bonding layer is arranged between the fireproof plate and the fireproof plate to obtain the composite plate, the binding belt is fixed in the groove to bind the composite plate, the binding belt and the bonding layer are combined, the door core structure can be tightly attached under various temperature alternation conditions, the structure is compact, the preparation method of the door core structure is simple in process, the door core comprising the door core structure can resist the high temperature of 1430 ℃, is about two times higher than the actual temperature of a fire disaster by 600-800 ℃, the tolerance time is not less than 70min, the tolerance time is not less than 90min under the optimal condition, and the safety and the stability are high.
Drawings
Fig. 1 is a plan view of a door core structure in embodiment 1 of the present invention.
Fig. 2 is a front view of a door core structure in embodiment 1 of the present invention.
Figure 3 is a top view of a core construction without a tie in accordance with example 1 of the present invention.
Fig. 4 is a sectional view a-a in fig. 3.
Fig. 5 is a sectional view B-B in fig. 3.
In the figure: 1-a refractory plate; 2-a tie layer; 3-fireproof plate; 4-binding a belt; 5-groove.
Detailed Description
The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.
The present invention is described in further detail below. The following examples are merely illustrative of the present invention and do not represent or limit the scope of the claims, which are defined by the claims.
First, an embodiment
Example 1
The embodiment provides a door core structure, as shown in fig. 1 and 2, the door core structure includes the composite sheet, the composite sheet is including fire-resistant board 1, tie coat 2 and PLASTIC LAMINATED 3 that set gradually, wherein fire-resistant board 1 is 15mm1430 inorganic fire-resistant board, tie coat 2 is 1.5mmNJJ1300 binder layer, PLASTIC LAMINATED 3 is 15mm glass magnesium board (model is M4300-S), the door core structure still includes the stainless steel ribbon that is used for tying up the composite sheet, ribbon 4 is through tying up fire-resistant board face, fire-resistant board face and the side of fire-resistant board 3 and fire-resistant board 1 around the composite sheet, ribbon 4 is well style of calligraphy on the fire-resistant board face of composite sheet, ribbon 4 is parallel arrangement on the side of fire-resistant board 3 and fire-resistant board 1 in the composite sheet, the perpendicular distance of ribbon 4 to the composite sheet edge is 16% of side length in the composite sheet crossing with ribbon 4, the ribbon 4 is fixed in the groove 5, the width of the groove 5 is 25mm, and the depth is 1 mm.
This embodiment provides a method for preparing the door core structure, including the following steps:
(1) arranging a NJJ1300 adhesive layer with the thickness of 1.5mm between a 1430 inorganic refractory plate with the thickness of 15mm and a glass magnesium plate with the thickness of 15mm to obtain a composite plate;
(2) a groove 5 is formed in the side faces of the fireproof plate face, the fireproof plate 3 and the fireproof plate 1 surrounding the composite plate, as shown in fig. 3-5, the groove 5 is in a shape of a Chinese character jing on the fireproof plate face of the composite plate, the fireproof plate 3 and the fireproof plate 1 are arranged in parallel in the composite plate on the splicing side face, the vertical distance from the groove 5 to the edge of the composite plate is 16% of the side length of the composite plate intersected with the groove 5, the width of the groove 5 is 25mm, and the depth is 1 mm;
(3) and (5) fixing the stainless steel cable tie 4 in the groove 5, and standing for 24h to obtain the door core structure.
Example 2
The embodiment provides a door core structure, which comprises a composite board, wherein the composite board comprises a fire-resistant board, an adhesive layer and a fireproof board which are sequentially arranged, the fire-resistant board is a 12mm1430 inorganic fire-resistant board, the adhesive layer is a 1mm NJJ1300 adhesive layer, the fireproof board is a 20mm glass magnesium board (model M4300-S), and the door core structure further comprises a stainless steel ribbon for bundling up the composite board; the composite sheet is binded through the side of the fire prevention face, fire-resistant face and the PLASTIC LAMINATED and the fire-resistant board that encircle the composite sheet to the ribbon, the ribbon is well style of calligraphy on the fire-resistant face of composite sheet, the ribbon is parallel arrangement in the composite sheet on the side of PLASTIC LAMINATED and fire-resistant board, the ribbon is taken to the vertical distance at composite sheet edge and is 12% of the crossing length of side of ribbon in the composite sheet, the ribbon is fixed in the recess, and the width of recess is 20mm, and the degree of depth is 0.5 mm.
This embodiment provides a method for preparing the door core structure, including the following steps:
(1) arranging a NJJ1300 adhesive layer with the thickness of 1mm between a 1430 inorganic refractory plate with the thickness of 12mm and a glass magnesium plate with the thickness of 20mm to obtain a composite plate;
(2) the composite board is characterized in that grooves are formed by surrounding the fireproof board surface and the fireproof board surface of the composite board and the splicing side surface of the fireproof board and the fireproof board, the grooves are in a shape like a Chinese character jing on the fireproof board surface of the composite board, the fireproof board and the splicing side surface of the fireproof board in the composite board are arranged in parallel, the vertical distance from the grooves to the edge of the composite board is 12% of the side length of the composite board, which is intersected with the grooves, the width of each groove is 20mm, and the depth of each groove is 0.5 mm;
(3) and fixing the stainless steel cable tie in the groove, and standing for 24 hours to obtain the door core structure.
Example 3
The embodiment provides a door core structure, which comprises a composite board, wherein the composite board comprises a fire-resistant board, an adhesive layer and a fireproof board which are sequentially arranged, the fire-resistant board is a 17mm1430 inorganic fire-resistant board, the adhesive layer is a 2mm NJJ1300 adhesive layer, the fireproof board is a 12mm glass magnesium board (model M4300-S), and the door core structure further comprises a stainless steel ribbon for bundling up the composite board; the composite sheet is binded through the side of the fire prevention face, fire-resistant face and the PLASTIC LAMINATED and the fire-resistant board that encircle the composite sheet to the ribbon, the ribbon is well style of calligraphy on the fire-resistant face of composite sheet, the ribbon is parallel arrangement in the composite sheet on the side of PLASTIC LAMINATED and fire-resistant board, the ribbon is taken 20% of the crossing length of side with the ribbon in the composite sheet to the vertical distance at composite sheet edge, the ribbon is fixed in the recess, and the width of recess is 30mm, and the degree of depth is 2 mm.
This embodiment provides a method for preparing the door core structure, including the following steps:
(1) arranging a NJJ1300 adhesive layer with the thickness of 2mm between a 1430 inorganic refractory plate with the thickness of 17mm and a glass magnesium plate with the thickness of 12mm to obtain a composite plate;
(2) the composite board is characterized in that grooves are formed by surrounding the fireproof board surface and the fireproof board surface of the composite board and the splicing side surfaces of the fireproof board and the fireproof board, the grooves are in a shape like a Chinese character jing on the fireproof board surface of the composite board, the fireproof board and the splicing side surfaces of the fireproof board in the composite board are arranged in parallel, the vertical distance from the grooves to the edge of the composite board is 20% of the side length of the composite board intersected with the grooves, the width of each groove is 30mm, and the depth of each groove is 2 mm;
(3) and fixing the stainless steel cable tie in the groove, and standing for 48 hours to obtain the door core structure.
Example 4
The embodiment provides a door core structure, which comprises a composite board, wherein the composite board comprises a fire-resistant board, an adhesive layer and a fireproof board which are sequentially arranged, the fire-resistant board is a 15mm1430 inorganic fire-resistant board, the adhesive layer is a 1.5mm NJJ1300 adhesive layer, the fireproof board is a 15mm glass magnesium board (model M4300-S), and the door core structure further comprises a stainless steel ribbon for bundling up the composite board; the composite sheet is binded through the side of the fire prevention face, fire-resistant face and the PLASTIC LAMINATED and the fire-resistant board that encircle the composite sheet to the ribbon, the ribbon is cross on the fire-resistant face of composite sheet, sets up one in the middle of the concatenation side of PLASTIC LAMINATED and fire-resistant board in the composite sheet, the ribbon is 50% of the crossing length of side with the ribbon in the composite sheet to the vertical distance that the composite sheet edge was taken to the ribbon, the ribbon is fixed in the recess, and the width of recess is 25mm, and the degree of depth is 1 mm.
The embodiment provides a preparation method of the door core structure, which is different from embodiment 1 in that the groove is arranged to be cross-shaped on the fireproof plate surface of the composite plate, one groove is arranged between the splicing side surfaces of the fireproof plate and the fireproof plate in the composite plate, and the rest of the grooves are the same as those in embodiment 1.
Example 5
This example provides a door core structure which differs from example 1 only in that the perpendicular distance from the tie to the edge of the composite panel is 8% of the length of the side of the composite panel which intersects the tie, the remainder being the same as in example 1.
The present embodiment provides a method for manufacturing a door core structure, which is different from embodiment 1 only in that the vertical distance from the groove to the edge of the composite board is 8% of the length of the edge of the composite board intersecting with the groove, and the rest is the same as that in embodiment 1.
Example 6
This example provides a door core structure which differs from example 1 only in that the perpendicular distance of the tie to the edge of the composite panel is 25% of the length of the side of the composite panel which intersects the tie, the remainder being the same as in example 1.
The present embodiment provides a method for manufacturing a door core structure, which is different from embodiment 1 only in that the vertical distance from the groove to the edge of the composite board is 25% of the length of the edge of the composite board intersecting with the groove, and the rest is the same as that of embodiment 1.
Example 7
The embodiment provides a door core structure, which comprises a composite board, wherein the composite board comprises a fire-resistant board, an adhesive layer and a fireproof board which are sequentially arranged, the fire-resistant board is a 15mm1430 inorganic fire-resistant board, the adhesive layer is a 1.5mm NJJ1300 adhesive layer, the fireproof board is a 15mm glass magnesium board (model M4300-S), and the door core structure further comprises a stainless steel ribbon for bundling up the composite board; the composite sheet is binded through the side of the fire prevention face, fire-resistant face and PLASTIC LAMINATED and the fire-resistant board that encircle the composite sheet to the ribbon, the ribbon is well style of calligraphy on the fire-resistant face of composite sheet, the ribbon is parallel arrangement in the composite sheet on the side of fire-resistant board and fire-resistant board, the ribbon is 16% of crossing length of side with the ribbon in the composite sheet to the vertical distance that the composite sheet edge was taken to the ribbon.
This example provides a method for preparing the door core structure, which is different from example 1 only in that no groove is provided, and the rest is the same as example 1.
Second, comparative example
Comparative example 1
This comparative example provides a door core structure which differs from example 1 only in that there is no 1.5mm layer of NJJ1300 adhesive, the remainder being the same as example 1.
This comparative example provides a method of manufacturing the door core structure, differing from example 1 only in that no adhesive layer is provided, and the rest is the same as example 1.
Comparative example 2
The comparative example provides a door core structure, which comprises a composite board, wherein the composite board comprises a fire-resistant board, an adhesive layer and a fireproof board which are sequentially arranged, the fire-resistant board is a 15mm1430 inorganic fire-resistant board, the adhesive layer is a 1.5mm NJJ1300 adhesive layer, and the fireproof board is a 15mm glass magnesium board (the model is M4300-S); the composite board surface is provided with a groove, the groove surrounds the fireproof board surface, the fireproof board surface and the side surfaces of the fireproof board and the fireproof board of the composite board, the groove is in a shape like a Chinese character jing on the fireproof board surface of the composite board, the groove is in parallel arrangement on the side surfaces of the fireproof board and the fireproof board in the composite board, the vertical distance from the groove to the edge of the composite board is 16% of the side length of the composite board intersected with the groove, the width of the groove is 25mm, and the depth is 1 mm.
This comparative example provides a method of making the door core structure, which differs from example 1 only in that no tie wrap is used, and the remainder is the same as example 1.
Third, application example
Application example 1
This application example provides a door core, the door core adopts the door core structure that provides in embodiment 1 to and set up in the 1mm steel sheet in the door core structure outside.
Application example 2
This application example provides a door core, the door core adopts the door core structure that provides in embodiment 2 to and set up in the 1.5 mm's of door core structure outside steel sheet.
Application example 3
This application example provides a door core, the door core adopts the door core structure that provides in embodiment 3 to and set up in the 0.8 mm's of door core structure outside steel sheet.
Application examples 4 to 7
Application examples 4-7 provide a door core, the door core adopts the door core structure that provides in embodiment 4-7, and set up in the 1 mm's of door core structure outside steel sheet.
Fourth, application comparative example
Application comparative examples 1 to 2
The door core is respectively provided by applying comparative examples 1-2, and the door core respectively adopts the door core structure provided in the comparative examples 1-2 and a steel plate which is 1mm and arranged on the outer side of the door core structure.
Fifth, test and result
The door core tolerance temperature and tolerance time test method comprises the following steps: adopt acetylene oxygen cutting method, utilize the flame that oxygen and acetylene burnt promptly to burn through the gas cutting of a period of time in door core plate seam department all around, reach extremely high temperature, emit a large amount of heat simultaneously to observe the change of door core material, note the temperature and the time when door core begins to appear damaging.
The test results of the above examples and comparative examples are shown in table 1.
TABLE 1
| Temperature tolerance (. degree.C.) | Endurance time (min) | |
| Application example 1 | 1430 | 90 |
| Application example 2 | 1430 | 90 |
| Application example 3 | 1430 | 90 |
| Application example 4 | 1430 | 80 |
| Application example 5 | 1430 | 77 |
| Application example 6 | 1430 | 73 |
| Application example 7 | 1430 | 70 |
| Application comparative example 1 | 1260 | 90 |
| Comparative application example 2 | 1260 | 60 |
From table 1, the following points can be seen:
(1) the utility model provides a door core structure, which comprises a fire-resistant plate, an adhesive layer and a fire-resistant plate which are sequentially arranged, wherein the fire-resistant plate, the adhesive layer and the fire-resistant plate are bound by a binding belt, the door core structure is simple and compact, the fire resistance is strong, the door core is prepared by arranging a steel plate on the outer surface of the door core structure, specifically, the door core prepared in application examples 1-7 has the tolerance temperature of 1430 ℃, the tolerance time of more than or equal to 70min, and the tolerance time of more than or equal to 90min under better conditions;
(2) in the comprehensive application example 1 and the application example 4, the grooves in the application example 1 are in a shape like a Chinese character jing on the fireproof plate surface of the composite plate, the fireproof board surface of the composite board is in a shape of Chinese character jing, the side surfaces of the fireproof board and the fireproof board in the composite board are arranged in parallel, compared with the application example 4 in which the groove is arranged in a shape of cross on the fireproof board surface of the composite board, the fireproof plate surface of the composite plate is in a cross shape, one strip is arranged between the splicing side surfaces of the fireproof plate and the fireproof plate in the composite plate, the endurance time of the door core prepared in the application example 1 is 90min, the endurance time of the door core prepared in application example 4 was 80min, which shows that the utility model has the advantages that the grooves are in the shape of Chinese character jing on the fireproof plate surface of the composite plate, the fireproof plate surface of the composite plate is in a shape of a Chinese character jing, and the side surfaces of the fireproof plate and the fireproof plate in the composite plate are arranged in parallel, so that the endurance time of the door core can be further prolonged;
(3) comprehensively, for application examples 1 and 5-6, the vertical distance from the groove to the edge of the composite board in the application example 1 is controlled to be 16% of the side length of the composite board intersected with the groove, compared with the vertical distances from the groove to the edge of the composite board in the application examples 5-6 which are respectively controlled to be 8% and 25% of the side length of the composite board intersected with the groove, the endurance time of the door core prepared in the application example 1 is 90min, and the endurance time of the door core prepared in the application examples 5-6 is respectively 77min and 73min, so that the endurance time of the door core can be further improved by setting the vertical distance from the groove to the edge of the composite board to be within a certain proportion range of the side length of the composite board intersected with the groove;
(4) compared with the application example 7 without the groove, the door core prepared in the application example 1 has the tolerance time of 90min, and the door core prepared in the application example 7 has the tolerance time of 70min, so that the door core can be better improved by arranging the groove;
(5) by integrating application example 1 with application comparative example 1, NJJ1300 adhesive layer was provided in application example 1, and compared to application comparative example 1 in which NJJ1300 adhesive layer was not provided, the fire resistance temperature in application example 1 was 1430 ℃ and the fire resistance temperature in application comparative example 1 was 1260 ℃ and could not resist 1430 ℃, thus showing that the fire resistance temperature of the door core can be increased by providing the adhesive layer;
(6) compared with the application comparative example 2 without the band binding, the application example 1 has the fire resistance temperature of 1430 ℃ and the endurance time of 90min, while the application comparative example 2 has the fire resistance temperature of 1260 ℃, the endurance time of 60min and cannot withstand 1430 ℃, so that the fire resistance temperature and the endurance time of the door core can be improved by the band binding.
In conclusion, the door core structure provided by the utility model is simple and compact in structure, strong in fire resistance, safe and stable, the tolerance temperature of the door core comprising the door core structure can reach 1430 ℃, the tolerance time is not less than 70min, the tolerance time is not less than 90min under better conditions, and the door core structure can be widely applied to the field of fire prevention.
The applicant declares that the present invention illustrates the detailed structural features of the present invention through the above embodiments, but the present invention is not limited to the above detailed structural features, that is, it does not mean that the present invention must be implemented depending on the above detailed structural features. It should be understood by those skilled in the art that any modifications of the present invention, equivalent substitutions of selected components of the present invention, additions of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
Claims (10)
1. A door core structure, characterized in that the door core structure comprises a composite panel;
the composite board comprises a fire-resistant board, an adhesive layer and a fire-resistant board which are arranged in sequence;
the door core structure also comprises a binding belt for binding the composite board;
the ribbon binds the composite sheet through the side of the fire prevention face, the fire-resistant face and fire prevention board and the fire-resistant board that encircle the composite sheet.
2. The door core structure according to claim 1, wherein the thickness of the refractory plate is 12 to 17 mm.
3. The door core structure according to claim 1, wherein the adhesive layer has a thickness of 1 to 2 mm.
4. The door core structure according to claim 1, wherein the thickness of the fire retardant panel is 12 to 20 mm.
5. The door core structure of claim 1, wherein the ties are in a cross-shape on the fire panel face of the composite panel;
the ribbon is arranged on the fireproof plate surface of the composite plate in a cross shape;
the ribbon is parallel arrangement on the side of PLASTIC LAMINATED and fire-resistant board in the composite sheet.
6. The door core structure according to claim 1, wherein the vertical distance from the tie to the edge of the composite panel is 12-20% of the length of the edge of the composite panel intersecting the tie.
7. A door core structure according to claim 1, wherein the surface of the composite panel is provided with a groove for fixing a cable tie;
the groove surrounds the fireproof plate surface and the fireproof plate surface of the composite plate and the side surfaces of the fireproof plate and the fireproof plate;
the groove is in a shape of a Chinese character jing on the fireproof plate surface of the composite plate;
the groove is in a shape of a Chinese character jing on the fireproof plate surface of the composite plate;
the grooves are arranged in parallel on the side surfaces of the fireproof plate and the fireproof plate in the composite plate.
8. A door core structure according to claim 7, wherein the perpendicular distance from the groove to the edge of the composite panel is 12-20% of the length of the edge of the composite panel intersecting the groove.
9. The door core structure according to claim 7, wherein the width of the groove is 20 to 30 mm;
the depth of the groove is 0.5-2 mm.
10. A door core comprising the door core structure of claim 1.
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| CN202023298553.XU CN215979045U (en) | 2020-12-31 | 2020-12-31 | Door core structure and door core comprising same |
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| CN202023298553.XU CN215979045U (en) | 2020-12-31 | 2020-12-31 | Door core structure and door core comprising same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727319A (en) * | 2020-12-31 | 2021-04-30 | 同曦集团有限公司 | Door core structure and preparation method and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727319A (en) * | 2020-12-31 | 2021-04-30 | 同曦集团有限公司 | Door core structure and preparation method and application thereof |
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Effective date of registration: 20221111 Address after: 233705 No. 601, Weiliu Road, economic development zone, Guzhen County, Bengbu City, Anhui Province Patentee after: Anhui Tongxi hi tech new material Co.,Ltd. Address before: 211100 No. 1355 Shuanglong Avenue, Jiangning District, Nanjing City, Jiangsu Province Patentee before: TONGXI GROUP Co.,Ltd. |