CN107804060A - A kind of preparation method of bamboo fibre sandwich composite board - Google Patents
A kind of preparation method of bamboo fibre sandwich composite board Download PDFInfo
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- CN107804060A CN107804060A CN201711014778.8A CN201711014778A CN107804060A CN 107804060 A CN107804060 A CN 107804060A CN 201711014778 A CN201711014778 A CN 201711014778A CN 107804060 A CN107804060 A CN 107804060A
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- China
- Prior art keywords
- preparation
- composite board
- bamboo fibre
- sandwich composite
- bamboo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B2038/0052—Other operations not otherwise provided for
- B32B2038/0076—Curing, vulcanising, cross-linking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B2038/0052—Other operations not otherwise provided for
- B32B2038/0084—Foaming
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/546—Flexural strength; Flexion stiffness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2419/00—Buildings or parts thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2361/04—Condensation polymers of aldehydes or ketones with phenols only
- C08J2361/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
- C08J2361/08—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols with monohydric phenols
- C08J2361/10—Phenol-formaldehyde condensates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2497/00—Characterised by the use of lignin-containing materials
- C08J2497/02—Lignocellulosic material, e.g. wood, straw or bagasse
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Laminated Bodies (AREA)
Abstract
A kind of preparation method of bamboo fibre sandwich composite board, belongs to sheet material preparation field.It is characterized in that：Phenol, water, paraformaldehyde and sodium hydroxide solution are added in flask, and adjusts pH value, by the cold discharging of reaction product, expandable phenolic resin is made；Silane coupler modified raw bamboo fibrous material is added, then sequentially adds surfactant, foaming agent, curing agent, and is well mixed, resin compound is poured into mould, foaming solidification；Artificial roller coat gluing；Each 1 layer of thin bamboo panel of upper and lower surface, 10~15min is closed after gluing, normal temperature cold pressing, composite plate is made.By the improvement of preparation technology, the compressive strength enhancing of prepared composite plate, buckling strength, transverse bending strength are improved, and preparation technology is simple to operate, are adapted to industrial application.
Description
Technical field
The invention belongs to sheet material preparation field, more particularly to a kind of preparation method of bamboo fibre sandwich composite board.
Background technology
In the building decoration in modern times, the use of composite is more and more.Phenolic foam sandwich composite plate is a kind of new
The flame retardant type wood-based plate of type, there is the effects such as adiabatic, sound insulation, be the preferable lightweight applied to energy-saving heat preserving inside and outside wall, exterior wall
Building materials.Particularly China's fire frequently occurs nearly ten years, and more than 90% fire is due to cause interior can accidentally with fire
Caused by combustion things are burnt, the property and life security of the fire serious threat people, therefore the exploitation of fire-retardant building materials is particularly significant.Together
When, with the further raising of energy-saving heat preserving and fire resistance index request, the demand of fire-retardant building materials will further increase, gently
Type, the flame retardant type phenolic foam sandwich composite plate of energy-saving and environmental protection have immeasurable market potential.Phenolic aldehyde on current market
Its upper and lower two pieces of panel for playing carrying of foam sandwich composite plate is mainly the larger color steel of intensity, stainless steel plate, aluminium sheet
Deng sheet metal, species is relatively single, limits its application field in terms of building.
The content of the invention
A kind of present invention seek to address that above mentioned problem, there is provided preparation method of bamboo fibre sandwich composite board.
A kind of preparation method of bamboo fibre sandwich composite board, it is characterised in that comprise the following steps：
（1）Phenol and water are added in 500mL flasks, paraformaldehyde and sodium hydroxide solution then add in three times, and adjust pH
Value, reaction product is cooled to 40 DEG C with bottom discharge, expandable phenolic resin is made；
（2）Silane coupler modified raw bamboo fibrous material is added in expandable phenolic resin, then sequentially adds surface work
Property agent, foaming agent, curing agent, and be well mixed, resin compound poured into mould, foaming solidification；
（3）Artificial roller coat gluing；Each 1 layer of thin bamboo panel of upper and lower surface, enhancing grid material are located at upper and lower thin bamboo panel and sandwich
Between froth bed, 10~15 min are closed after gluing, normal temperature cold pressing, composite plate are made.
A kind of preparation method of bamboo fibre sandwich composite board of the present invention, it is characterised in that step（1）Described in
Flask is four-hole boiling flask, and agitator, reflux condensing tube, thermometer are provided with flask.
A kind of preparation method of bamboo fibre sandwich composite board of the present invention, it is characterised in that step（1）Described in three
It is secondary to be：First stage, it is warming up to 90 DEG C of beginning timing, the min of reaction time 60~90；Second stage, temperature maintain 90 DEG C,
The min of reaction time 50~70；Phase III, temperature maintain 85 DEG C, the min of reaction time 30~50.
A kind of preparation method of bamboo fibre sandwich composite board of the present invention, it is characterised in that step（2）Described in rise
The temperature of bubble solidification is 70 DEG C.
A kind of preparation method of bamboo fibre sandwich composite board of the present invention, it is characterised in that step（3）Described on
Glue amount is 180~200 g/m2。
A kind of preparation method of bamboo fibre sandwich composite board of the present invention, it is characterised in that step（3）Described in it is cold
The MPa of pressure 1 of pressure, it is cold-pressed the h of the time 4~8.
A kind of preparation method of bamboo fibre sandwich composite board of the present invention, it is characterised in that step（3）Described in it is multiple
3 layers or 5 layers altogether of plywood, 25 ± 0.5mm of gross thickness after assembly.
A kind of preparation method of bamboo fibre sandwich composite board of the present invention, it is prepared by the improvement of preparation technology
Composite plate compressive strength enhancing, buckling strength, transverse bending strength be improved, and preparation technology operates letter
It is single, it is adapted to industrial application.
Embodiment
A kind of preparation method of bamboo fibre sandwich composite board, it is characterised in that comprise the following steps：
（1）500mL flasks in add phenol and water, paraformaldehyde and sodium hydroxide solution then add in three times, and adjust
PH values, reaction product is cooled to 40 DEG C with bottom discharge, expandable phenolic resin is made；
（2）Silane coupler modified raw bamboo fibrous material is added in expandable phenolic resin, then sequentially adds surface work
Property agent, foaming agent, curing agent, and be well mixed, resin compound poured into mould, foaming solidification；
（3）Artificial roller coat gluing；Each 1 layer of thin bamboo panel of upper and lower surface, enhancing grid material are located at upper and lower thin bamboo panel and sandwich
Between froth bed, 10~15 min are closed after gluing, normal temperature cold pressing, composite plate are made.
A kind of preparation method of bamboo fibre sandwich composite board of the present invention, step（1）Described in flask be four mouthfuls
Flask, and agitator, reflux condensing tube, thermometer are provided with flask.Step（1）Described in be three times：First stage, heating
To 90 DEG C of beginning timing, the min of reaction time 60~90；Second stage, temperature maintain 90 DEG C, the min of reaction time 50~70
；Phase III, temperature maintain 85 DEG C, the min of reaction time 30~50.Step（2）Described in bubble solidification temperature be 70
℃.Step（3）Described in spread be 180~200 g/m2.Step（3）Described in the MPa of pressure 1 that is cold-pressed, be cold-pressed the time 4
~8 h.Step（3）Described in 3 layers or 5 layers altogether of composite plate, 25 ± 0.5mm of gross thickness after assembly.When base material, (bamboo fibre increases
Strong phenolic foam sandwich) interface bonding strength between top layer and finishing material (thin bamboo sheet) be more than its any homogenous material from
During body intensity, the base material or finishing material of sample are destroyed；And when the interface bonding strength between base material top layer and finishing material
During less than its any homogenous material self-strength, sample glue-line is peeled off.Composite board shows in the test of surface bonding intensity
The maximum load gone out is mainly related to bamboo fiber reinforcement phenolic foam sandwich self-strength, and maximum load is peeled off less than interface glue-line
Required load.Consider that thin bamboo veneer is optimal with bamboo fiber reinforcement phenolic foam sandwich from the performance perspective of composite board
Interfacial bonder is epoxy AB glue.Composite board is all at first its sandwich froth bed by what is destroyed during forced compression,
Therefore composite board compressive strength is mainly related with its compressive strength of sandwich froth bed in itself to the size of modulus of elasticity in comperssion,
Grid material mainly improves composite board uniform force, enhancing effect unobvious, the veneer of thin bamboo veneer due to itself
Obvious difference be present in fiber alignment feature, its vertical and horizontal bending strength and the modulus of elasticity in static bending.And phenol formaldehyde foam presss from both sides
The bending strength and the modulus of elasticity in static bending of core are relatively small, therefore the bending strength of composite board depends mainly on the size of Bao Zhu patches
Face and the mechanical property of grid reinforcing material.Dimensional stability on the length and width direction of composite board depends primarily on phenol
The performance of aldehyde foam core material, and the dimensional stability on thickness direction with foam core, thin bamboo veneer, enhancing grid material and
The elements such as glue-line all have correlation.Natural ramie fiber grid cloth and stainless steel cloth are to Bao Zhu faces bamboo fiber reinforcement phenol formaldehyde foam
The enhancing effect of the mechanical properties such as the compression performance of sandwich composite board, bending property, impact strength is optimal.
Claims (7)
1. a kind of preparation method of bamboo fibre sandwich composite board, it is characterised in that comprise the following steps：
（1）Phenol and water are added in 500mL flasks, paraformaldehyde and sodium hydroxide solution then add in three times, and adjust pH
Value, reaction product is cooled to 40 DEG C with bottom discharge, expandable phenolic resin is made；
（2）Silane coupler modified raw bamboo fibrous material is added in expandable phenolic resin, then sequentially adds surface work
Property agent, foaming agent, curing agent, and be well mixed, resin compound poured into mould, foaming solidification；
（3）Artificial roller coat gluing；Each 1 layer of thin bamboo panel of upper and lower surface, enhancing grid material are located at upper and lower thin bamboo panel and sandwich
Between froth bed, 10~15 min are closed after gluing, normal temperature cold pressing, composite plate are made.
A kind of 2. preparation method of bamboo fibre sandwich composite board as claimed in claim 1, it is characterised in that step（1）Described in
Flask be four-hole boiling flask, and agitator, reflux condensing tube, thermometer are provided with flask.
A kind of 3. preparation method of bamboo fibre sandwich composite board as claimed in claim 1, it is characterised in that step（1）Described in
It is three times：First stage, it is warming up to 90 DEG C of beginning timing, the min of reaction time 60~90；Second stage, temperature maintain 90
DEG C, the min of reaction time 50~70；Phase III, temperature maintain 85 DEG C, the min of reaction time 30~50.
A kind of 4. preparation method of bamboo fibre sandwich composite board as claimed in claim 1, it is characterised in that step（2）Described in
The temperature of foaming solidification is 70 DEG C.
A kind of 5. preparation method of bamboo fibre sandwich composite board as claimed in claim 1, it is characterised in that step（3）Described in
Spread is 180~200 g/m2。
A kind of 6. preparation method of bamboo fibre sandwich composite board as claimed in claim 1, it is characterised in that step（3）Described in
The MPa of pressure 1 of cold pressing, it is cold-pressed the h of the time 4~8.
A kind of 7. preparation method of bamboo fibre sandwich composite board as claimed in claim 1, it is characterised in that step（3）Described in
3 layers or 5 layers altogether of composite plate, 25 ± 0.5mm of gross thickness after assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711014778.8A CN107804060A (en) | 2017-10-26 | 2017-10-26 | A kind of preparation method of bamboo fibre sandwich composite board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711014778.8A CN107804060A (en) | 2017-10-26 | 2017-10-26 | A kind of preparation method of bamboo fibre sandwich composite board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107804060A true CN107804060A (en) | 2018-03-16 |
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ID=61591106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711014778.8A Withdrawn CN107804060A (en) | 2017-10-26 | 2017-10-26 | A kind of preparation method of bamboo fibre sandwich composite board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107804060A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112029229A (en) * | 2020-09-11 | 2020-12-04 | 中国林业科学研究院木材工业研究所 | Light flame-retardant bamboo-based fiber composite material and preparation method thereof |
-
2017
- 2017-10-26 CN CN201711014778.8A patent/CN107804060A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112029229A (en) * | 2020-09-11 | 2020-12-04 | 中国林业科学研究院木材工业研究所 | Light flame-retardant bamboo-based fiber composite material and preparation method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180316 |
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| WW01 | Invention patent application withdrawn after publication |