CN114412328A - Composite solid wood door - Google Patents

Composite solid wood door Download PDF

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Publication number
CN114412328A
CN114412328A CN202210073385.9A CN202210073385A CN114412328A CN 114412328 A CN114412328 A CN 114412328A CN 202210073385 A CN202210073385 A CN 202210073385A CN 114412328 A CN114412328 A CN 114412328A
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Prior art keywords
solid wood
parts
door
wood door
hot melt
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CN202210073385.9A
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熊爱明
刘海林
谢俊榆
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Guangzhou Shengyi Gate Industry Co ltd
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Guangzhou Shengyi Gate Industry Co ltd
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Priority to CN202210073385.9A priority Critical patent/CN114412328A/en
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    • 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
    • E06B3/72—Door leaves consisting of frame and panels, e.g. of raised panel type
    • E06B3/74—Door leaves consisting of frame and panels, e.g. of raised panel type with wooden panels or frame
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/04—Non-macromolecular additives inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/06—Non-macromolecular additives organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/08—Macromolecular additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J167/00—Adhesives based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Adhesives based on derivatives of such polymers
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2217—Oxides; Hydroxides of metals of magnesium
    • C08K2003/222—Magnesia, i.e. magnesium oxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Special Wing (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

The application relates to the timber field, and more specifically says, it relates to a compound wood door. A composite solid wood door comprises a door frame and a door leaf, wherein the door leaf is rotatably connected to the door frame, the door leaf comprises a solid wood door core and a door plate, the surfaces of the solid wood door core are mutually laminated, the door plate is laminated with the solid wood door core, the solid wood door cores are bonded through hot melt adhesive to form a first adhesive layer, the solid wood door core and the door plate are bonded through hot melt adhesive to form a second adhesive layer, the mutually adjacent side surfaces of the solid wood door cores are provided with first glue filling grooves, the first glue filling grooves between the two solid wood door cores are mutually communicated, and the mutually adjacent side surfaces of the door plate are provided with second glue filling grooves; the first glue pouring groove penetrates through the top of the solid wood door core or/and the second glue pouring groove penetrates through the top of the door panel; the solid wood door core is provided with a plurality of communicating holes communicated with the first grouting groove and the second grouting groove. The application has the advantage of prolonging the service life.

Description

Composite solid wood door
Technical Field
The application relates to the timber field, and more specifically says, it relates to a compound wood door.
Background
In the composite solid wood door, common wood finger joint materials are often used as base materials, so that the base materials have the functions of structural connection and frame, and the deformation resistance is improved; the wood has strong decorative effect, and the wood is used as a surface decorative material of a door by using a veneer made of precious tree species and the like, so that the characteristics of the wood can be truly embodied; the artificial board is mainly a medium density fiberboard, has uniform material quality and good milling processing performance, and can be used as a modeling member.
Therefore, the composite solid wood door can fully utilize the excellent characteristics of various materials, and can effectively reduce the production cost on the premise of not reducing the use and decorative performance of the door. The composite solid wood door has the characteristics of sound insulation, heat insulation, high strength, good durability and the like besides good visual effect, thereby being accepted by people and gradually being widely used.
In the related art, the materials of the respective layers are generally attached together using glue. In order to prolong the service life of the composite solid wood door, how to improve the connection strength between the materials of each layer is one of the problems which are keenly solved by people.
Disclosure of Invention
In order to increase of service life, the application provides a compound solid wood door.
The application provides a compound wood door adopts following technical scheme:
a composite solid wood door comprises a door frame and a door leaf, wherein the door leaf is connected to the door frame, the door leaf comprises solid wood door cores with surfaces mutually laminated and door plates laminated with the solid wood door cores, the solid wood door cores are bonded through hot melt adhesives to form a first adhesive layer, the solid wood door cores and the door plates are bonded through hot melt adhesives to form a second adhesive layer, the side surfaces, close to each other, of the solid wood door cores are provided with first glue filling grooves, the first glue filling grooves between the two solid wood door cores are mutually communicated, and the side surfaces, close to each other, of the door plates are provided with second glue filling grooves; the first glue pouring groove penetrates through the top of the solid wood door core or/and the second glue pouring groove penetrates through the top of the door panel; the solid wood door core is provided with a plurality of communicating holes communicated with the first grouting groove and the second grouting groove.
Through adopting above-mentioned technical scheme, the staff fills the hot melt adhesive toward the first encapsulating groove that runs through the solid wood door core top or the second encapsulating inslot that runs through the door plant top, and the hot melt adhesive is full of first encapsulating groove, intercommunicating pore and second encapsulating groove, even as an organic whole with both sides door plant and both sides solid wood door core, has strengthened the joint strength between each layer of door leaf, difficult separation. In daily use, timber receives weather effect easily, expend with heat and contract with cold, and groove, hole, first glue film, the second glue film that set up on wood door core, the door plant provide the space for deformation, can not cause the damage of door leaf in guaranteeing the deformation of certain degree to be favorable to prolonging the life of compound wood door.
Preferably, the hot melt adhesive comprises the following raw materials in parts by weight: 5-8 parts of xylene formaldehyde resin, 18-25 parts of saturated polyester resin, 4-8 parts of polyester elastomer, 5-8 parts of pp wax, 3-7 parts of Fischer-Tropsch wax, 0.8-1.5 parts of antioxidant, 4-9 parts of filler, 3.8-7.0 parts of flame retardant and 3-6 parts of naphthenic rubber oil.
Preferably, the hot melt adhesive comprises the following raw materials in parts by weight: 6.2-7.3 parts of xylene formaldehyde resin, 20-22 parts of saturated polyester resin, 5.6-6.8 parts of polyester elastomer, 6.2-7.0 parts of pp wax, 4.8-5.5 parts of Fischer-Tropsch wax, 1.0-1.3 parts of antioxidant, 6-8 parts of filler, 4.5-6.0 parts of flame retardant and 4.3-5.4 parts of naphthenic rubber oil.
Through adopting above-mentioned technical scheme, the hot melt adhesive that makes has the low viscosity in the certain degree, pours into in the door leaf back, permeates easily in this kind of porous substrate of timber, nevertheless is unlikely to excessive infiltration again, and the hot melt adhesive becomes firm mechanical bonding with the door sector. And the hot melt adhesive that this application provided has good wettability, combines with the door leaf, solidifies the back, has good adhesion nature, makes solid wood door core, door plant closely link as an organic wholely under the effect of hot melt adhesive, and is difficult for separately.
Specifically, in a specific dosage range, the pp wax, the Fischer-Tropsch wax and the saturated polyester resin are matched with each other, the three have good compatibility and large intermolecular force, the infiltration capacity of the hot melt adhesive on wood is improved, and the pp wax and the Fischer-Tropsch wax can be uniformly dispersed in the saturated polyester resin and act on different positions in a system. A large amount of pp wax and Fischer-Tropsch wax with small molecular structures are filled among all components in the system, so that intermolecular force among all the components is weakened, the chain structure of hot-melt collagen is damaged, the activity of the whole chain segment is enhanced, the thermal deformation capacity is enhanced, the softening point is reduced, the fluidity is increased, the surface tension is reduced, and the hot-melt adhesive is fully spread and fully contacted on the surface of the wood, so that the bonding performance is improved.
Under the common cooperation of the pp wax, the Fischer-Tropsch wax and the naphthenic base rubber oil, the modulus of an adhesive film formed by the hot melt adhesive is greatly reduced, the elongation and the flexibility are improved, and the bonding strength of the hot melt adhesive is improved.
Under the common cooperation of the xylene formaldehyde resin, the saturated polyester resin and the polyester elastomer, the three have good compatibility, so that the storage modulus of the hot melt adhesive is low, the fluidity of the saturated polyester resin is obviously improved, and the hot melt adhesive is better spread and diffused on the surface of wood, thereby improving the wettability and initial viscosity of the hot melt adhesive and the surface of the wood, and improving the wettability of the hot melt adhesive. The improvement of the diffusivity is favorable for the penetration of the hot melt adhesive into the pores of the wood to form adhesive nails, and further improves the bonding strength between all layers of the door leaf.
Preferably, the filler is one or more of nano calcium carbonate, magnesium oxide, clay and silicon dioxide.
The wood belongs to porous substances, and when the commercially available hot melt adhesive is used for bonding the wood, part of the hot melt adhesive is easy to permeate into pores inside the wood, so that the consumption of the hot melt adhesive is increased, and the bonding strength is also reduced.
Through adopting above-mentioned technical scheme, use specific type's filler in order to overcome above-mentioned problem, make the hot melt adhesive extend fast to set up first grout groove, second grout groove, intercommunication downthehole, and can not excessively permeate timber inside, reduce cost.
Preferably, the filler is nano calcium carbonate and clay in a weight ratio of 1: (0.65-0.85) in proportion.
By adopting the technical scheme, after the nano calcium carbonate is added into the hot melt adhesive system, when the hot melt adhesive is smeared on wood, the nano calcium carbonate can be filled into the pores of the adhesive interface, a large number of small hooks are formed after cooling and solidification, and the hot melt adhesive is firmly hooked with the wood, so that the bonding strength between the hot melt adhesive and the wood is improved.
Under the common cooperation of the clay and the nano calcium carbonate in a specific proportion, the clay mainly fills large pores, and the nano calcium carbonate mainly fills small pores, so that the situation that the hot melt adhesive permeates into the wood is further prevented. Meanwhile, the matching of the nano calcium carbonate and the hot melt adhesive is beneficial to improving the dispersibility of the nano calcium carbonate in a system, so that the adhesive force between the hot melt adhesive and wood is further improved.
Preferably, the flame retardant is one or two of decabromodiphenylethane and brominated epoxy resin.
Preferably, the preparation method of the hot melt adhesive comprises the following steps:
step 1): adding the xylene formaldehyde resin and the saturated polyester resin in parts by weight under the conditions of 135-155 ℃ and uniformly stirring;
step 2): then keeping the conditions, continuously adding the polyester elastomer in parts by weight, and uniformly stirring to obtain a mixture;
step 3): raising the temperature to 160-165 ℃, adding the pp wax, the Fischer-Tropsch wax and the filler in parts by weight into the mixture, and uniformly stirring;
step 4): keeping the conditions, continuously adding the antioxidant, the flame retardant and the naphthenic base rubber oil in parts by weight, and uniformly stirring to obtain a blend;
step 5): discharging to obtain a finished product.
By adopting the technical scheme, various raw materials are mixed in specific steps, so that the various raw materials are fully reacted, the bonding performance of the hot melt adhesive is improved to the maximum, and the viscosity is reduced to a lower level to a certain extent.
Preferably, 0.6 to 0.8 part by weight of hyperbranched polyester is also added in the step 1).
By adopting the technical scheme, the nonpolar part in the hyperbranched polyester shields the polar part of the polymer molecules, and the distance between the macromolecules is enlarged, so that the van der Waals force between the macromolecules is weakened, and the integral viscosity of the hot melt adhesive is reduced.
In summary, the present application has the following beneficial effects:
1. the staff fills the hot melt adhesive toward the first encapsulating groove that runs through wood door core top or the second encapsulating inslot that runs through the door plant top, and the hot melt adhesive is full of first encapsulating groove, intercommunicating pore and second encapsulating groove, links both sides door plant and both sides wood door core as an organic whole, has strengthened the joint strength between each layer of door leaf, difficult separation. In daily use, timber receives weather effect easily, expend with heat and contract with cold, and groove, hole, first glue film, the second glue film that set up on wood door core, the door plant provide the space for deformation, can not cause the damage of door leaf in guaranteeing the deformation of certain degree to be favorable to prolonging the life of compound wood door.
2. The prepared hot melt adhesive has low viscosity to a certain degree, and can easily permeate into the porous base material of wood after being poured into the door leaf, but cannot excessively permeate into the porous base material, so that the hot melt adhesive is firmly and mechanically combined with the door leaf. And the hot melt adhesive that this application provided has good wettability, combines with the door leaf, solidifies the back, has good adhesion nature, makes solid wood door core, door plant closely link as an organic wholely under the effect of hot melt adhesive, and is difficult for separately.
3. Under the common cooperation of the clay and the nano calcium carbonate in a specific proportion, the clay mainly fills large pores, and the nano calcium carbonate mainly fills small pores, so that the situation that the hot melt adhesive permeates into the wood is further prevented. Meanwhile, the matching of the nano calcium carbonate and the hot melt adhesive is beneficial to improving the dispersibility of the nano calcium carbonate in a system, so that the adhesive force between the hot melt adhesive and wood is further improved.
Drawings
FIG. 1 is a schematic view of the composite solid wood door structure provided by the present application.
Fig. 2 is a sectional view of the door leaf of the present application in a horizontal direction.
Description of the drawings reference numbers: 1. a door frame; 2. a door leaf; 3. a solid wood door core; 31. a groove; 32. a first glue pouring groove; 33. a communicating hole; 4. a door panel; 41. a second glue pouring groove; 5. a flame retardant layer; 6. a special paint layer for the wooden door; 7. a filling area; 8. a first glue layer; 9. and a second adhesive layer.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples.
The information on the source of the raw materials used in the following examples and comparative examples is detailed in Table 1.
TABLE 1
Raw materials Model number Source information
Xylene formaldehyde resin / Hubei Nuo Ke Tech Co Ltd
Saturated polyester resin 630B Changzhou Spise materials science & technology Limited
Polyester elastomer 4069 DuPont U.S.A
Naphthenic base rubber oil KN4010 Michelson Runhua petrochemical Co Ltd
Hyperbranched polyester HyPer H20 WUHAN HYPERBRANCHED POLYMERS SCIENCE & TECHNOLOGY Co.,Ltd.
Examples
Example 1
A composite solid wood door, referring to fig. 1 and 2, comprises a door frame 1 and a door leaf 2, wherein the door leaf 2 is installed on the door frame 1 through a hinge. The door leaf 2 comprises two solid wood door cores 3 with surfaces mutually attached and a door plate 4 with the opposite sides of the solid wood door cores 3 attached. The side of the door panel 4 departing from the solid wood door core 3 is fixedly provided with a flame-retardant layer 5 and a special wooden door paint layer 6, and the special wooden door paint layer 6 is positioned on the outermost side. The side that solid wood door core 3 is close to each other is provided with recess 31, and the recess 31 of two solid wood door cores 3 encloses and establishes and form filling area 7, is provided with insulation material in the filling area 7. The heat insulating material can be selected from honeycomb paper, foaming heat insulating glue and other materials. The two solid wood door cores 3 are bonded through hot melt adhesive to form a first adhesive layer 8; the solid wood door core 3 is bonded with the door panel 4 through hot melt adhesive to form a second adhesive layer 9.
The side surfaces of the solid wood door core 3, which are close to each other, are respectively provided with a first glue pouring groove 32, and the first glue pouring grooves 32 penetrate through the top of the solid wood door core 3; the notches of the two first glue pouring grooves 32 are oppositely arranged and communicated with each other. The sides of the door panels 4 that are close to each other are provided with second glue pouring grooves 41. The solid wood door core 3 is provided with a plurality of communicating holes 33, and the first glue filling groove 32 is communicated with the second glue filling groove 41 through the communicating holes 33.
The application also provides a hot melt adhesive which comprises 5kg of xylene formaldehyde resin, 18kg of saturated polyester resin, 8kg of polyester elastomer, 8kg of pp wax, 3kg of Fischer-Tropsch wax, 0.8kg of antioxidant, 9kg of filler, 3.8kg of flame retardant and 6kg of naphthenic base rubber oil.
Wherein, the filler is nano calcium carbonate, the flame retardant is decabromodiphenylethane, and the antioxidant is an antioxidant 1076.
The preparation method of the hot melt adhesive comprises the following steps:
step 1): adjusting the temperature to 135 ℃, adding the xylene formaldehyde resin and the saturated polyester resin into the reaction kettle, heating for 20min, and then stirring for 10min at the rotating speed of 40r/min to uniformly mix the xylene formaldehyde resin and the saturated polyester resin.
Step 2): and then keeping the conditions, adding the polyester elastomer into the reaction kettle, waiting for 5min, and stirring for 3min under the condition of 40r/min to obtain a mixture.
Step 3): the temperature is raised to 160 ℃, pp wax, Fischer-Tropsch wax and filler are added into the mixture in the reaction kettle, the mixture is waited for 3min, and the mixture is stirred for 6min under the condition of 50 r/min.
Step 4): keeping the conditions, continuously adding the antioxidant, the flame retardant and the naphthenic base rubber oil into the reaction kettle, keeping the rotating speed of 50r/min, and stirring for 8min to obtain the blend.
Step 5): and (4) under the condition of uniform stirring, vacuumizing and defoaming until no bubbles appear in the system, and discharging to obtain a finished product.
Examples 2 to 5
A composite solid wood door is different from the composite solid wood door in example 1 in the selection and the dosage of raw materials, which are detailed in table 2, and the data of example 1 are summarized in table 2.
TABLE 2
Figure BDA0003482927930000051
Example 6
A composite solid wood door is different from the composite solid wood door in example 5 in that the filler is nano calcium carbonate and clay in a weight ratio of 1: 0.65, namely the input amount of the nano calcium carbonate is 4.85kg, and the input amount of the clay is 3.15 kg.
Example 7
A composite solid wood door is different from the composite solid wood door in example 5 in that the filler is nano calcium carbonate and clay in a weight ratio of 1: 0.85, namely the input amount of the nano calcium carbonate is 4.32kg, and the input amount of the clay is 3.68 kg.
Example 8
A composite solid wood door is different from the composite solid wood door in the embodiment 5 in that 0.6kg of hyperbranched polyester is also added in the step 1).
Example 9
A composite solid wood door is different from the composite solid wood door in the embodiment 5 in that 0.8kg of hyperbranched polyester is also added in the step 1).
Example 10
A composite solid wood door is different from the composite solid wood door in the embodiment 6 in that 0.8kg of hyperbranched polyester is also added in the step 1).
Comparative example
Comparative example 1
A composite solid wood door differing from example 5 in that pp wax was replaced with an equal weight of microcrystalline wax.
Comparative example 2
A composite solid wood door differing from example 5 in that fischer-tropsch wax was replaced with an equal weight of microcrystalline wax.
Comparative example 3
A composite solid wood door, which is different from that of example 5 in that the naphthenic base rubber oil is replaced by dioctyl phthalate with the same weight.
Comparative example 4
A composite solid wood door, which is different from that of example 5 in that a xylene formaldehyde resin was replaced with polymethyl methacrylate of the same weight.
Comparative example 5
A composite wood door is different from that of example 5 in that the amount of pp wax is 2kg, the amount of Fischer-Tropsch wax is 10kg, the amount of naphthenic rubber oil is 10kg, and the amount of xylene formaldehyde resin is 2 kg.
Performance test
1. And (3) detecting the melt viscosity: examples 1-10, comparative examples 1-5 and commercially available hot melt adhesives were tested according to HG/T3660-1999 Standard for melt viscosity of Hot melt adhesives.
2. And (3) detecting the bonding strength: the peel strengths of examples 1-10, comparative examples 1-5 and commercially available hot melt adhesives were tested by replacing stainless steel with wood according to method 1 of GB/T2792-.
3. Appearance: samples 80mm in length, 30mm in width and 20mm in thickness were taken and observed for examples 1 to 10, comparative examples 1 to 5 and commercially available hot melt adhesives.
The assay data for assays 1-3 are detailed in Table 3.
TABLE 3
Figure BDA0003482927930000071
According to the comparison of the detection data of examples 1 to 5 and comparative examples 1 to 4 in table 3, the hot melt adhesive prepared by the technical scheme provided by the application has lower melt viscosity, higher peel strength and more delicate and smooth appearance. The hot melt adhesive formula provided by the application is an integral body, and the expected technical effect cannot be achieved due to the lack of any core raw material. As can be seen from the comparison of the detection data of the hot melt adhesives sold in the examples 1 to 5 and the comparative example 5 in Table 3, even if the same raw materials are used, the hot melt adhesives prepared in the comparative example 5 can not achieve good effects even if the specific adding proportion provided by the application is not adopted, and the hot melt adhesives prepared in the comparative example 5 can only achieve the performance similar to the hot melt adhesives sold in all aspects.
As can be seen from comparison of the detection data of examples 6 to 7 in Table 3 with commercially available hot melt adhesives, the peel strength of the prepared hot melt adhesives is greatly improved by selecting specific fillers and adding the fillers in specific proportions. It is demonstrated that under the coordination of nano calcium carbonate and clay, the adhesive can be better filled into the pores of the adhesive interface, so that the hot melt adhesive and the wood are tightly connected, and the bonding strength is improved.
According to the comparison of the detection data of the examples 8 to 9 in the table 3 and the commercially available hot melt adhesive, the hyperbranched polyester with a specific dosage is added, so that the viscosity of the hot melt adhesive is favorably reduced, and the joints of the door plate and the solid wood door core are better extended and filled to a certain extent.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims (8)

1. The composite solid wood door comprises a door frame (1) and a door leaf (2), wherein the door leaf (2) is connected to the door frame (1), the door leaf (2) comprises a solid wood door core (3) with surfaces mutually attached and a door plate (4) with the solid wood door core (3) attached, and the composite solid wood door is characterized in that the solid wood door cores (3) are bonded through hot melt adhesive to form a first adhesive layer (8), the solid wood door cores (3) and the door plate (4) are bonded through hot melt adhesive to form a second adhesive layer (9), the mutually close sides of the solid wood door cores (3) are provided with first glue filling grooves (32), the first glue filling grooves (32) between the two solid wood door cores (3) are mutually communicated, and the mutually close sides of the door plate (4) are provided with second glue filling grooves (41); the first glue pouring groove (32) penetrates through the top of the solid wood door core (3) or/and the second glue pouring groove (41) penetrates through the top of the door panel (4); the solid wood door core (3) is provided with a plurality of communicating holes (33) communicated with the first grouting groove (32) and the second grouting groove.
2. The composite solid wood door according to claim 1, wherein: the hot melt adhesive comprises the following raw materials in parts by weight: 5-8 parts of xylene formaldehyde resin, 18-25 parts of saturated polyester resin, 4-8 parts of polyester elastomer, 5-8 parts of pp wax, 3-7 parts of Fischer-Tropsch wax, 0.8-1.5 parts of antioxidant, 4-9 parts of filler, 3.8-7.0 parts of flame retardant and 3-6 parts of naphthenic rubber oil.
3. The composite solid wood door according to claim 2, wherein: the hot melt adhesive comprises the following raw materials in parts by weight: 6.2-7.3 parts of xylene formaldehyde resin, 20-22 parts of saturated polyester resin, 5.6-6.8 parts of polyester elastomer, 6.2-7.0 parts of pp wax, 4.8-5.5 parts of Fischer-Tropsch wax, 1.0-1.3 parts of antioxidant, 6-8 parts of filler, 4.5-6.0 parts of flame retardant and 4.3-5.4 parts of naphthenic rubber oil.
4. The composite solid wood door according to claim 2, wherein: the filler is one or a combination of more of nano calcium carbonate, magnesium oxide, clay and silicon dioxide.
5. The composite solid wood door according to claim 4, wherein: the filler is nano calcium carbonate and clay, and the weight ratio of the nano calcium carbonate to the clay is 1: (0.65-0.85) in proportion.
6. The composite solid wood door according to claim 2, wherein: the flame retardant is one or the combination of decabromodiphenylethane and brominated epoxy resin.
7. The composite solid wood door according to any one of claims 2 to 6, wherein: the preparation method of the hot melt adhesive comprises the following steps:
step 1): adding the xylene formaldehyde resin and the saturated polyester resin in parts by weight under the conditions of 135-155 ℃ and uniformly stirring;
step 2): then keeping the conditions, continuously adding the polyester elastomer in parts by weight, and uniformly stirring to obtain a mixture;
step 3): raising the temperature to 160-165 ℃, adding the pp wax, the Fischer-Tropsch wax and the filler in parts by weight into the mixture, and uniformly stirring;
step 4): keeping the conditions, continuously adding the antioxidant, the flame retardant and the naphthenic base rubber oil in parts by weight, and uniformly stirring to obtain a blend;
step 5): discharging to obtain a finished product.
8. The composite solid wood door according to claim 7, wherein: 0.6 to 0.8 weight part of hyperbranched polyester is also added in the step 1).
CN202210073385.9A 2022-01-21 2022-01-21 Composite solid wood door Pending CN114412328A (en)

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