CN104942913A - Method for processing environment-friendly eucalyptus plywood - Google Patents
Method for processing environment-friendly eucalyptus plywood Download PDFInfo
- Publication number
- CN104942913A CN104942913A CN201510322086.4A CN201510322086A CN104942913A CN 104942913 A CN104942913 A CN 104942913A CN 201510322086 A CN201510322086 A CN 201510322086A CN 104942913 A CN104942913 A CN 104942913A
- Authority
- CN
- China
- Prior art keywords
- veneer
- eucalyptus
- parts
- glued board
- plywood
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/50—Amines
-
- 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
- C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
- C09J161/04—Condensation polymers of aldehydes or ketones with phenols only
- C09J161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- 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
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
-
- 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
- C09J171/00—Adhesives based on polyethers obtained by reactions forming an ether link in the main chain; Adhesives based on derivatives of such polymers
- C09J171/02—Polyalkylene oxides
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention discloses a method for processing environment-friendly eucalyptus plywood. The method comprises the following steps: (1) pretreating eucalyptus; (2) taking the eucalyptus obtained through pretreatment as a veneer, adopting a composite face veneer structure, and preparing a face veneer and a core veneer; causing the thickness of the veneer to be 1.8-2.2 mm, adopting a roller drying machine to perform veneer drying, causing the water content of the core veneer to be 6-7%, and causing the water content of the face veneer to be 6-9%; and (3) using adhesive that is prepared by tea water containing tea polyphenols, polyethylene glycol, thiourea and urea solution to perform adhesion of the core veneer and the face veneer through a plywood assembly, gluing and hot pressing process, so as to manufacture the needed plywood. According to the technical scheme, the method can overcome the shortcomings of high material cost, short service life and poor safety and poor environmental protection property in the prior art so as to have the advantages of low material cost, long service life and good safety and good environmental protection property.
Description
Technical field
The present invention relates to plank processing technique field, particularly, relate to a kind of processing method of environment-friendly type Eucalyptus glued board.
Background technology
Glued board also claims clamping plate, is commonly called as thin central layer.Formed by the veneer of three layers or multilayer one millimeters thick or the hot pressing of thin plate sticker.The advantages such as glued board has that little, the breadth of distortion is large, easy construction, non-warpage, band tensile mechanical performance are good, therefore be widely used in the use of the industrial departments such as Furniture manufacture, interior decoration, residential housing and shipbuilding, railway carriage manufacture, various military project, light industrial goods and packaging.
In recent years, with the fast development of the upstream and downstream industries such as real estate, furniture, architectural engineering, logistics packaging, the demand of market to glued board plate grows to even greater heights, wood processing industry also obtain fast development, the market demand of glued board constantly increases always, and its production technology, product quality also have a distinct increment.
The production of glued board, hot pressing is key procedure, and most producer producing glued board, all uses formaldehyde or carbamide resin, can discharge free formaldehyde gas, there is serious formaldehyde pollution in hot pressing process at present.And due to the problem of production technology level, the glued board of production technical indicator not high enough in wear-resisting, corrosion-resistant, MOR, bonding strength, shock resistance degree etc., can not better meet market demand.
Realizing in process of the present invention, inventor finds at least to exist in prior art the defect such as material cost is high, service life is short and Safety and Environmental Protection is poor.
Summary of the invention
The object of the invention is to, for the problems referred to above, propose a kind of processing method of environment-friendly type Eucalyptus glued board, to realize that the cost of material is low, long service life and the good advantage of Safety and Environmental Protection.
For achieving the above object, the technical solution used in the present invention is: a kind of processing method of environment-friendly type Eucalyptus glued board, comprising:
(1) pretreatment is carried out to Eucalyptus; This pretreated operation specifically comprises:
1. playing skin, polishing, alignment by comprising, after the process of debug eye, carrying out rotary-cut;
2. veneer process, utilizes Wooden modifying, fire retardant, after directly Eucalyptus log being carried out modification, fire retardant process, carries out polishing and primary drying process;
(2) Eucalyptus pretreatment obtained, as veneer, adopts composite table plate structure, prepares dash board and central layer; The thickness of veneer is 1.8 ~ 2.2mm, and veneer drying adopts roller dryer, and central layer moisture content is at 6-7%, and dash board moisture content is 6 ~ 9%;
(3) use by the obtained adhesive of the Aqua Folium Camelliae sinensis containing Tea Polyphenols, polyethylene glycol, thiocarbamide and urea liquid, by glued board assembly, gluing and heat pressing process, by central layer and dash board bonding, obtained required glued board;
The preparation method of this adhesive is as follows:
1. by each component of following parts by weight proportioning:
Aqua Folium Camelliae sinensis: 7.6 parts;
Polyethylene glycol: 6 parts;
Thiocarbamide: 10 parts;
Urea liquid: 8.2 parts;
Epoxy resin: 10.5 parts;
Polyetheramine: 4 parts;
One step resol: 18 parts;
2. after each component being pressed corresponding parts by weight proportioning, under the temperature conditions of 50 ~ 60 degree, by the obtained required adhesive of glue making machine.
The processing method of the environment-friendly type Eucalyptus glued board of various embodiments of the present invention, owing to comprising: (1) carry out pretreatment to Eucalyptus; (2) Eucalyptus pretreatment obtained, as veneer, adopts composite table plate structure, prepares dash board and central layer; The thickness of veneer is 1.8 ~ 2.2mm, and veneer drying adopts roller dryer, and central layer moisture content is at 6-7%, and dash board moisture content is 6 ~ 9%; (3) use by the obtained adhesive of the Aqua Folium Camelliae sinensis containing Tea Polyphenols, polyethylene glycol, thiocarbamide and urea liquid, by glued board assembly, gluing and heat pressing process, by central layer and dash board bonding, obtained required glued board; Thus the defect that in prior art, material cost is high, service life is short and Safety and Environmental Protection is poor can be overcome, to realize that the cost of material is low, long service life and the good advantage of Safety and Environmental Protection.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from description, or understand by implementing the present invention.
Below by embodiment, technical scheme of the present invention is described in further detail.
Detailed description of the invention
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Technical scheme of the present invention, Eucalyptus is utilized to develop low formaldehyde environment protection type high-strength Eucalyptus glued board, by carrying out modification to Eucalyptus, formaldehyde pollution is controlled to the improvement of glue formula, uses the intensity of special this guarantee of structural design production technology glued board, the physical index such as wear-resisting, and the main production equipments such as plate paver are improved, while reaching the low formaldehyde high strength of glued board environmental protection, to enhance productivity, save consumption of wood.
According to the embodiment of the present invention, provide a kind of processing method of environment-friendly type Eucalyptus glued board, comprising:
(i) Eucalyptus pretreatment, this pretreated operation specifically comprises:
1. playing skin, polishing, alignment by comprising, after the process of debug eye, carrying out rotary-cut;
2. veneer process, utilizes Wooden modifying, fire retardant, after directly Eucalyptus log being carried out modification, fire retardant process, carries out polishing and primary drying process;
(ii) Eucalyptus plywood product conceptual design
(1) raw material Choice and design: take Eucalyptus as primary raw material, had both taken full advantage of the various excellent performance of Eucalyptus, also make the quality of product and combination property more excellent.
(2) product assembly structure: adopt the design of composite table plate structure.This structure can reduce hot pressing pressure and wood compression rate, and the ratio of strength to weight of product is higher, solves high pressure simultaneously, high compression rate product Wet-resilient is large and be out of shape large problem.
(3) veneer machined parameters design: when manufacturing the veneer of glued board, according to thin veneer, is conducive to the mechanical property improving glued board, but too increases the veneer number of plies of glued board, add the difficulty of consumption glue amount and plywood heat pressing process.And apply thick veneer, when particularly the thickness of Eucalyptus brachymedial plate is greater than 2.0mm, the mechanical property of plank is difficult to improve, this mainly due to Eucalyptus veneer thicker time, easily hear from veneer string cut off, layering.
In technical solution of the present invention, veneer thickness controls between 1.8 ~ 2.2mm, and veneer drying adopts roller dryer, can improve veneer flatness, reduces consumption glue amount; Central layer moisture content is at 6-7%, and dash board moisture content, at 8% ~ l0%, can ensure to reach best mechanical performance index.
(iii) adhesive improvement
One of material that adhesive must use as glued board, can produce free formaldehyde in production with in using, cause environmental pollution.Control Form aldehyde release, reach environmental protection object, must improve its formula and add suitable additive.Adopt Aqua Folium Camelliae sinensis (containing Tea Polyphenols), polyethylene glycol, thiocarbamide, urea liquid etc. through series of process improvement glue, the glued board burst size of methanal≤0.5mg/100g of production, is much higher than national standard, reaches international E0 standard.
(iv) the design of production technology and the improvement of production line, the mainly improvement of bed board equipment
(1) glued board assembly, gluing and heat pressing process
The glue adopted in production, be conducive to improving its curing rate, shortens hot pressing time.Be also noted that the problem in veneer degree of tightness face during assembly, to make the institutional framework of structural plywood symmetrical, reduce product buckling deformation.
Use formaldehyde or carbamide resin in present plywood hot-pressing operation, there is serious formaldehyde pollution; And due to production technology backwardness, glued board is the low inferior problem of quality and technical index in wear-resisting, corrosion-resistant, MOR, bonding strength, shock resistance degree etc.Technical scheme of the present invention, uses the adhesive of special process and formula improvement, improves bed board production equipment, solve relevant issues pollution problem and waste of raw materials problem, substantially increase production efficiency, cost-saving more than 25%.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. a processing method for environment-friendly type Eucalyptus glued board, is characterized in that, comprising:
(1) pretreatment is carried out to Eucalyptus; This pretreated operation specifically comprises:
1. playing skin, polishing, alignment by comprising, after the process of debug eye, carrying out rotary-cut;
2. veneer process, utilizes Wooden modifying, fire retardant, after directly Eucalyptus log being carried out modification, fire retardant process, carries out polishing and primary drying process;
(2) Eucalyptus pretreatment obtained, as veneer, adopts composite table plate structure, prepares dash board and central layer; The thickness of veneer is 1.8 ~ 2.2mm, and veneer drying adopts roller dryer, and central layer moisture content is at 6-7%, and dash board moisture content is 6 ~ 9%;
(3) use by the obtained adhesive of the Aqua Folium Camelliae sinensis containing Tea Polyphenols, polyethylene glycol, thiocarbamide and urea liquid, by glued board assembly, gluing and heat pressing process, by central layer and dash board bonding, obtained required glued board;
The preparation method of this adhesive is as follows:
1. by each component of following parts by weight proportioning:
Aqua Folium Camelliae sinensis: 7.6 parts;
Polyethylene glycol: 6 parts;
Thiocarbamide: 10 parts;
Urea liquid: 8.2 parts;
Epoxy resin: 10.5 parts;
Polyetheramine: 4 parts;
One step resol: 18 parts;
2. after each component being pressed corresponding parts by weight proportioning, under the temperature conditions of 50 ~ 60 degree, by the obtained required adhesive of glue making machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510322086.4A CN104942913A (en) | 2015-06-12 | 2015-06-12 | Method for processing environment-friendly eucalyptus plywood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510322086.4A CN104942913A (en) | 2015-06-12 | 2015-06-12 | Method for processing environment-friendly eucalyptus plywood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104942913A true CN104942913A (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510322086.4A Pending CN104942913A (en) | 2015-06-12 | 2015-06-12 | Method for processing environment-friendly eucalyptus plywood |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109266283A (en) * | 2018-08-06 | 2019-01-25 | 岳西县明杰电子有限公司 | A kind of ageing-resistant insulation adhesive of transformer |
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2015
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109266283A (en) * | 2018-08-06 | 2019-01-25 | 岳西县明杰电子有限公司 | A kind of ageing-resistant insulation adhesive of transformer |
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Application publication date: 20150930 |