CN211278857U

CN211278857U - Pressurized impregnated flame retardant type glued bamboo component

Info

Publication number: CN211278857U
Application number: CN201920320564.1U
Authority: CN
Inventors: 陈忠范; 崔兆彦
Original assignee: Nanjing Dongbiao Environmental Material Co ltd
Current assignee: Nanjing Dongbiao Environmental Material Co ltd
Priority date: 2019-03-14
Filing date: 2019-03-14
Publication date: 2020-08-18
Anticipated expiration: 2029-03-14

Abstract

The utility model belongs to the technical field of building engineering bamboo component is used, specifically disclose a pressurization flooding fire retardant formula veneer bamboo component, including first veneer bamboo plywood, second veneer bamboo plywood, and set up a plurality of layers of veneer bamboo plywood between first veneer bamboo plywood, second veneer bamboo plywood, first veneer bamboo plywood, a plurality of layers of veneer bamboo plywood, second veneer bamboo plywood are a plurality of bamboo strip adhesive coincide hot pressing respectively and are made, and wherein, the width of bamboo strip is 20mm, and thickness is 7 mm. The utility model discloses a beneficial effect of pressurization flooding fire retardant formula veneer bamboo component lies in: the plywood bamboo member has the advantages of excellent fire resistance, simple and reasonable design and outstanding compressive strength, and can obviously improve the physical properties and prolong the service life of the plywood bamboo member.

Description

Pressurized impregnated flame retardant type glued bamboo component

Technical Field

The utility model belongs to the technical field of building engineering bamboo component is used, concretely relates to pressurization flooding fire retardant formula veneer bamboo component.

Background

The bamboo forest in China has abundant resources and various varieties, and is widely distributed in the middle and south regions. Compared with the traditional building wood, the bamboo wood has shorter growth cycle and can be matured in 3-6 years. The raw bamboo is produced industrially and in a standardized way, various unit forms of the bamboo are combined into a material which can meet the engineering purpose, the defects of large variation of geometric dimension and mechanical property can be effectively overcome, and the raw bamboo becomes an engineering bamboo material with more excellent properties. Compared with other processes, the glued bamboo has lower density and is beneficial to reducing the dead weight; the glue content is small, and the pollution to the environment is less; the original appearance of the bamboo is kept, and the bamboo is more advantageous in aesthetic aspect, so that the bamboo has better application prospect.

The glued bamboo is a combustible material formed by pressing and gluing a large number of bamboo strips, the damage mode of the glued bamboo in fire is different from that of common wood and engineering bamboo, and the fire-resistant glued bamboo has the prominent expression that: the strength of the adhesive is reduced under fire, the bamboo strips are layered, carbonized and shed, the radial and tangential differences are obvious, and the difference between the stress mechanism and the failure mechanism is obvious when the glued bamboo is used as a beam and a column, so that the glued bamboo as a bearing member has good fire resistance and the safety and reliability of a building are ensured by technical measures.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model discloses a to prior art not enough, the fire resistance of veneer bamboo timber material is poor, and the difference receives the hot side carbomorphism to drop inconsistent under the conflagration, leads to defects such as component atress mechanism and failure mechanism analysis complicacy, provides a pressurization flooding fire retardant formula veneer bamboo component, is showing physical properties and the life who improves the veneer bamboo component.

The technical scheme is as follows: the utility model provides a pair of pressurization flooding fire retardant formula veneer bamboo component, including first veneer bamboo plywood, second veneer bamboo plywood, and set up a plurality of layers of veneer bamboo plywood between first veneer bamboo plywood, second veneer bamboo plywood, a plurality of layers of veneer bamboo plywood, second veneer bamboo plywood are a plurality of bamboo strip adhesive coincide hot pressing respectively and are made, and wherein, the width of bamboo strip is 20mm, and thickness is 7 mm.

According to the technical scheme, the temperature for superposing and hot pressing the bamboo strip adhesives is 100-120 ℃, the hot pressing time is 10min, and the applied pressure is 10-15 MPa.

According to the technical scheme, the pressure impregnation fire retardant type glued bamboo component can be used as a beam or a column of a building.

According to the technical scheme, the bamboo strip adhesives are subjected to superposition and hot pressing and then dried by a drying kiln at the drying temperature of 70-90 ℃.

Compared with the prior art, the utility model discloses a beneficial effect of pressurization flooding fire retardant formula veneer bamboo component lies in: the plywood bamboo member has the advantages of excellent fire resistance, simple and reasonable design and outstanding compressive strength, and can obviously improve the physical properties and prolong the service life of the plywood bamboo member.

Drawings

FIG. 1 is a schematic structural view of a pressurized impregnated flame retardant type glued bamboo structural member of the present invention;

wherein, the sequence numbers in the figure are as follows: 1-a first glued bamboo layer board, 2-a glued bamboo layer board and 3-a second glued bamboo layer board.

Detailed Description

The invention will be further elucidated with reference to the drawings and the specific embodiments.

The pressurized impregnated flame retardant glued bamboo component shown in fig. 1 comprises a first glued bamboo board 1, a second glued bamboo board 3, and a plurality of layers of glued bamboo boards 2 arranged between the first glued bamboo board 1 and the second glued bamboo board 3, wherein the first glued bamboo board 1, the plurality of layers of glued bamboo boards 2 and the second glued bamboo board 3 are respectively prepared by laminating and hot-pressing a plurality of bamboo batten adhesives, wherein the width of the bamboo batten is 20mm, and the thickness of the bamboo batten is 7 mm.

Further preferably, the temperature for superposing and hot-pressing the plurality of bamboo splint adhesives is 100-; the pressure impregnation fire retardant type glued bamboo component can be used as a beam or a column of a building; and after the plurality of bamboo batten adhesives are overlapped and hot-pressed, drying the bamboo batten adhesives by a drying kiln at the drying temperature of 80 ℃.

The structure is pressure impregnation flame retardantThe preparation method of the chemical type glued bamboo component comprises the following steps: step 1), selecting raw bamboos: the glued bamboo is made of moso bamboo with the age of 4-5 years, and the lignification degree of the bamboo is gradually improved, the strength is stable, and the dry shrinkage and wet expansion rate are low. Step 2), cutting raw bamboo: the bamboo stem is cut into 1.5m according to the difference of wall thickness by considering the characteristics of thick root and thin tip of the moso bamboo. Step 3), bamboo splitting: splitting the cut raw bamboo into regular bamboo strips. Step 4): roughly planing bamboo strips: after the bamboo strips are dried, planing four sides, planing off residual bamboo green and bamboo yellow, slicing the bamboo to leave knife marks, and the like, wherein the bamboo strips are firmly glued without cracks, splitting and layering, the thickness of the roughly planed bamboo strips is usually 7-9 mm, the width is 20-22 mm, and the tolerance of the thickness and the width is within 0.1 mm. Step 5) flame retardant treatment: bundling the bamboo strips after rough planing, putting the bamboo strips into a pressure tank, pressing the fire retardant into the pressure tank by adopting a pressurizing impregnation method, wherein the impregnation time is 20min, and the pressure is 1MPa, so that the drug loading rate of the bamboo is effectively improved, and the flame retardant effect of the bamboo is enhanced. Step 6), drying the bamboo strips: the moisture content of the bamboo strips subjected to the cooking treatment exceeds 80% and reaches a saturated state, in order to ensure the quality of the glued bamboo product, drying treatment is carried out by using a drying kiln, the moisture content of the bamboo is required to be controlled according to the climate conditions and the use environments of various regions, the glued bamboo usually has high requirements on the moisture content, and the moisture content is required to be controlled below 10% under the normal condition. Step 7), fine planing: finely planing the bamboo strips into 7mm thick and 20mm wide. Step 8), gluing and assembling: vertically placing a layer of second glued bamboo layer plate 3 on bamboo strips for priming, gluing the top of the bamboo strips, horizontally placing a plurality of layers of glued bamboo layer plates 2 on the bamboo strips, applying an adhesive on each layer, vertically placing a layer of first glued bamboo layer plate 1, finishing the combination, selecting a high-quality environment-friendly adhesive, uniformly gluing according to the specified gluing amount, wherein the applying amount is generally 330g/m². Step 9) hot-pressing and gluing: and gluing the plate blank into a blank plate under the specified pressure, temperature and time, and performing secondary hot-pressing gluing on the glued bamboo plate to form a glued bamboo block, wherein the temperature is 120 ℃, the hot-pressing time is 10min, and the applied pressure is 15 MPa. Step 10), packaging a finished product: and inspecting the finished product, and packaging after the quality is qualified.

More preferably, the flame retardant in the step 5) is prepared by mixing ammonium polyphosphate, phosphoric acid and urea according to a ratio of 1:0.3: 1.1.

The pressurized impregnated flame retardant type glued bamboo component manufactured by the structure has the advantages of excellent fire resistance, simple and reasonable design, outstanding compressive strength, capability of obviously improving the physical performance and the service life of the glued bamboo component, reasonable design of the manufacturing process, high production efficiency and excellent quality of the pressurized impregnated flame retardant type glued bamboo component.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principle of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims

1. A pressure impregnation flame retardant type glued bamboo member is characterized in that: the bamboo plywood is characterized by comprising a first glued bamboo laminate (1), a second glued bamboo laminate (3) and a plurality of layers of glued bamboo laminates (2) arranged between the first glued bamboo laminate (1) and the second glued bamboo laminate (3), wherein the first glued bamboo laminate (1), the plurality of layers of glued bamboo laminates (2) and the second glued bamboo laminate (3) are respectively prepared by laminating and hot-pressing a plurality of bamboo batten adhesives, wherein the width of each bamboo batten is 20mm, and the thickness of each bamboo batten is 7 mm; the bamboo strips are impregnated with a flame retardant;

the bamboo batten of the first glued bamboo layer board (1) and the second glued bamboo layer board is vertically placed, the bamboo battens in the glued bamboo layer boards (2) are horizontally placed, an adhesive is coated between every two glued bamboo layer boards (2), and an adhesive is arranged between the glued bamboo layer boards (2) and the first glued bamboo layer board (1) and the second glued bamboo layer board (3).