CN108177228A - A kind of high-strength shaving board and preparation method thereof - Google Patents

A kind of high-strength shaving board and preparation method thereof Download PDF

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Publication number
CN108177228A
CN108177228A CN201810138396.4A CN201810138396A CN108177228A CN 108177228 A CN108177228 A CN 108177228A CN 201810138396 A CN201810138396 A CN 201810138396A CN 108177228 A CN108177228 A CN 108177228A
Authority
CN
China
Prior art keywords
strength
shaving board
hot pressing
strength shaving
wood shavings
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
Application number
CN201810138396.4A
Other languages
Chinese (zh)
Inventor
薛茂林
钟笃章
国智武
葛立军
郑凤山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shouguang Luli Wood Co Ltd
Original Assignee
Shouguang Luli Wood Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shouguang Luli Wood Co Ltd filed Critical Shouguang Luli Wood Co Ltd
Priority to CN201810138396.4A priority Critical patent/CN108177228A/en
Publication of CN108177228A publication Critical patent/CN108177228A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27LREMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L11/00Manufacture of wood shavings, chips, powder, or the like; Tools therefor
    • B27L11/02Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood shavings or the like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27NMANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00Pretreatment of moulding material
    • B27N1/02Mixing the material with binding agent
    • B27N1/0209Methods, e.g. characterised by the composition of the agent
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27NMANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/02Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27NMANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08Moulding or pressing
    • B27N3/10Moulding of mats
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27NMANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08Moulding or pressing
    • B27N3/18Auxiliary operations, e.g. preheating, humidifying, cutting-off

Abstract

The present invention provides a kind of high-strength shaving boards and preparation method thereof, the preparation method includes flaking and drying, is glued, mats formation and hot pressing, 200 250 DEG C of hot pressing temperature, 0 3.5MPa of pressure, 300 350mm/s of hot pressing speed, the hot pressing factor is 4 8s/mm, and core, surface layer wood shavings moisture content are respectively 4 8%, 10 15% after sizing;The high-strength shaving board, under dampness, static bending strength is 16.0 24.0 MPa, interior 0.50 0.85 MPa of bonding strength, and thickness swelling rate 6 8%, wet strength are 8.0 12.0 MPa for 24 hours;High-strength shaving board static bending strength, interior bonding strength and the modulus of elasticity in static bending of the present invention is high, and thickness swelling rate is low, and moistureproof and waterproof performance is good, index has been more than international standard requirement, and properties get a promotion, economic and environment-friendly, plate safety health, application prospect are extensive.

Description

A kind of high-strength shaving board and preparation method thereof
Technical field
The invention belongs to particieboard manufacturing technology fields, are related to a kind of particieboard, and in particular to a kind of high-strength shaving board And preparation method thereof.
Background technology
Present furniture, door and window, wallboard, plank majority using materials such as glued board, fiberboard, calcium-plastic board and plasterboards, Above-mentioned finishing material is expensive, and humidity resistance is undesirable.
Particieboard is called bagasse board, the particle made of timber or other ligno-cellulosic materials, apply adhesive after The wood-based plate composed under heating power and pressure effect, also known as flakeboard.Particieboard has higher physical and mechanical property, is considered It is the cheap substitute products of ideal of following glued board.
Existing particieboard is primarily present following defect:(1)Existing particieboard, static bending strength, interior bonding strength and curved Modulus in elasticity in bending, it is impossible to be improved simultaneously;(2)Existing particieboard, thickness swelling rate is high, wet parallel static bending strength It is low, corresponding intensity requirement is not achieved under dampness.
Invention content
The present invention for above insufficient, the technical problems to be solved by the invention be to provide a kind of high-strength shaving board and its Preparation method.The present invention can realize following goal of the invention:
(1)A kind of high-strength shaving board of the present invention, static bending strength, interior bonding strength and the modulus of elasticity in static bending are high, water sucting thickness Expansion rate is low, and properties get a promotion, economic and environment-friendly, plate safety health, and application prospect is extensive;
(2)Not only intensity is high, and moistureproof and waterproof performance is good for the high-strength shaving board prepared by the present invention, and index has been more than state Border standard requirement;
(3)The preparation method of the high-strength shaving board of the present invention, is easy to control, method is simple, production efficiency with technological parameter The advantages of high.
In order to solve the above technical problems, using following technical scheme:
A kind of preparation method of high-strength shaving board of the present invention, specifically includes following steps:
(1)Selection:Raw material requirement material kind is single, chips again after content of bark≤8% or use peeling.
(2)It chips:Wood chip is obtained after chipping, strand length is in the range of 50-70mm.
(3)Flaking and drying:Wood chip carries out flaking processing, and flaking and dried sandwich layer shaving shape are:(50-70)× (20-30)×(0.3-0.5)Mm, and the wood shavings occupation rate of the form is more than 65%;
Surface layer shaving shape is short glass fibre shape, is not allow for graininess wood wool, wood shavings size distribution is as shown in Figure 1;
Wood shavings moisture content after drying can be controlled by 1.5-2.5%.
(4)Sizing:Resin added is depending on adhesive type, UF in this way(Urea-formaldehyde resin adhesive)Or MUF(Melamine changes Property urea-formaldehyde resin adhesive), based on dry glue/over dry wood shavings, core, surface layer are respectively resin added:6-8% and 10-12%;If MDI (Polymeric isocyanate), core, surface layer are respectively:2.5-3.5% and 3.5-5.5%;
The consumption of paraffin is in 3-8kg/m3
Adhesive is in coverage rate >=98% on wood shavings surface;
Core, surface layer wood shavings moisture content are respectively after sizing:4-8% and 10-15%.
(5)Mat formation:The vertical, horizontal density variation for the slab mated formation is respectively:± 1.5% and ± 2.5%.
(6)Hot pressing:Hot pressing speed 300-350mm/s, 200-250 DEG C of temperature, pressure 0-3.5MPa, the hot pressing factor are 4- 8s/mm。
The present invention compared with prior art, is had the following advantages using above technical scheme:
(1)A kind of high-strength shaving board of the present invention, static bending strength, interior bonding strength and the modulus of elasticity in static bending are high, water sucting thickness Expansion rate is low, and properties get a promotion, economic and environment-friendly, plate safety health, and application prospect is extensive.Static bending strength is 12.0- 23.0 MPa, elasticity modulus is in 1800-2800 MPa, and interior bonding strength is 0.35-0.65 MPa, for 24 hours thickness swelling rate 6-12%, wet strength are 6.0-11.5 MPa;
(2)Not only intensity is high, and moistureproof and waterproof performance is good for the particieboard prepared by the present invention, and index has been more than international standard It is required that;The high-strength shaving board of the present invention, under dampness, static bending strength is 16.0-24.0 MPa, and elasticity modulus is in 2600- 4000 MPa, interior bonding strength are 0.50-0.85 MPa, for 24 hours thickness swelling rate 6-8%, wet strength 8.0-12.0 MPa;
(3)The preparation method of the high-strength shaving board of the present invention, is easy to control, method is simple, production efficiency with technological parameter The advantages of high.
Description of the drawings
Fig. 1 is the wood shavings particle size distribution curve of surface layer wood shavings;
Wherein, B is discharging-material size, i.e. the wood shavings granularity of surface layer wood shavings;
Fig. 2:The particieboard profile density curve distribution figure of the present invention.
Specific embodiment
1 a kind of high-strength shaving board of embodiment and preparation method thereof
A kind of preparation method of high-strength shaving board of the present invention, specifically includes following steps:
(1)Selection
Raw material requirement material kind is single, chips again after content of bark≤8% or use peeling.
Wherein, the content of bark of embodiment 1-3 is as shown in the table:
(2)It chips
Wood chip is obtained after chipping, strand length is in the range of 50-70mm.
(3)Flaking and drying
Wood chip carries out flaking processing, and flaking and dried sandwich layer shaving shape are:(50-70)×(20-30)×(0.3-0.5) Mm, and the wood shavings occupation rate of the form is more than 65%;
Surface layer shaving shape is short glass fibre shape, is not allow for graininess wood wool, wood shavings size distribution is as shown in Figure 1;
Wood shavings moisture content after drying, is controlled by 1.5-2.5%.
Wherein, wood shavings moisture content is as shown in the table after the drying of embodiment 1-3:
(4)Sizing
Resin added is depending on adhesive type, UF in this way(Urea-formaldehyde resin adhesive)Or MUF(Cyanurotriamide modified urea resin glue Glutinous agent), based on dry glue/over dry wood shavings, core, surface layer are respectively resin added:6-8% and 10-12%;If MDI(It polymerize isocyanic acid Ester), core, surface layer are respectively:2.5-3.5% and 3.5-5.5%;
The applied amount of paraffin is 3-8kg/m3
Above-mentioned adhesive is in coverage rate >=98% on wood shavings surface;
Core, surface layer wood shavings moisture content are respectively after sizing:4-8% and 10-15%.
Wherein, sizing parameter is as shown in the table used by embodiment 1-3:
The embodiment of the present invention replaces MDI using MUF or UF, can obtain the technique effect essentially identical with using MDI, herein No longer repeat one by one.
(5)Mat formation
Mat formation to obtain slab, the density deviation of slab is:±1.5%;The lateral density deviation of slab is ± 2.5%.
(6)Hot pressing
Hot pressing speed 300-350mm/s, 200-250 DEG C of temperature, pressure 0-3.5MPa, the hot pressing factor are 4-8s/mm.
Wherein, hot compression parameters are as shown in the table used by embodiment 1-3:
A kind of technique effect of high-strength shaving board of the present invention:
1st, the Vertical density gradient of high-strength shaving board obtained using a kind of preparation method of high-strength shaving board of the present invention is such as Shown in Fig. 2.
2nd, according to method as defined in concerned countries standard to the obtained high-strength shaving boards of the embodiment of the present invention 1-3 into Row detection, the result of detection(Average value)As shown in Table 1 and Table 2:
Table 1:High-strength shaving board testing result of the present invention(Under drying regime)
As shown in Table 1, high-strength shaving board of the invention, under drying regime, static bending strength 12.0-23.0MPa, elasticity modulus In 1800-2800MPa, interior bonding strength is 0.35-0.65MPa, for 24 hours thickness swelling rate 6-12%, wet strength 6.0- 11.5MPa。
Table 2:High-strength shaving board testing result of the present invention(Under dampness)
As shown in Table 2, high-strength shaving board of the invention, under dampness, static bending strength 16.0-24.0MPa, elasticity modulus In 2600-4000MPa, interior bonding strength is 0.50-0.85MPa, for 24 hours thickness swelling rate 6-8%, wet strength 8.0- 12.0MPa。
Unless otherwise indicated, percentage of the present invention is weight percent, and ratio of the present invention is Mass ratio.
Finally it should be noted that:The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, It, for those skilled in the art, still can be with although the present invention is described in detail with reference to the foregoing embodiments It modifies to the technical solution recorded in foregoing embodiments or equivalent replacement is carried out to which part technical characteristic.It is all Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the present invention Within the scope of shield.

Claims (10)

1. a kind of preparation method of high-strength shaving board, which is characterized in that the method includes flaking and drying, be glued, mat formation And hot pressing.
2. the preparation method of a kind of high-strength shaving board according to claim 1, which is characterized in that the hot pressing, hot pressing 200-250 DEG C of temperature, pressure 0-3.5MPa.
3. the preparation method of a kind of high-strength shaving board according to claim 1, which is characterized in that the sizing, sandwich layer Wood shavings, surface layer wood shavings moisture content are respectively 4-8%, 10-15%.
4. the preparation method of a kind of high-strength shaving board according to claim 1, which is characterized in that the sizing, gluing Agent is in coverage rate >=98% on wood shavings surface.
A kind of 5. preparation method of high-strength shaving board according to claim 1, which is characterized in that the flaking and dry Dry, wood shavings moisture content is 1.5-2.5% after drying.
A kind of 6. preparation method of high-strength shaving board according to claim 1, which is characterized in that the flaking and dry Dry, sandwich layer Flake geometry exists(50-70)×(20-30)×(0.3-0.5)Occupation rate in the range of mm is 65-85%.
7. the preparation method of a kind of high-strength shaving board according to claim 1, which is characterized in that the hot pressing, hot pressing Speed 300-350mm/s, the hot pressing factor are 4-8s/mm.
8. the preparation method of a kind of high-strength shaving board according to claim 1, which is characterized in that the method further includes Selection, the selection, content of bark≤8%.
9. a kind of high-strength shaving board, which is characterized in that the high-strength shaving board, static bending strength 16.0-24.0MPa, bullet Property modulus in 2600-4000MPa, interior bonding strength is 0.50-0.85MPa.
10. a kind of high-strength shaving board according to claim 9, which is characterized in that thickness swelling rate 6-8% for 24 hours, Wet strength is 8.0-12.0MPa.
CN201810138396.4A 2018-02-10 2018-02-10 A kind of high-strength shaving board and preparation method thereof Pending CN108177228A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810138396.4A CN108177228A (en) 2018-02-10 2018-02-10 A kind of high-strength shaving board and preparation method thereof

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Application Number Priority Date Filing Date Title
CN201810138396.4A CN108177228A (en) 2018-02-10 2018-02-10 A kind of high-strength shaving board and preparation method thereof

Publications (1)

Publication Number Publication Date
CN108177228A true CN108177228A (en) 2018-06-19

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1099328A (en) * 1994-03-16 1995-03-01 郭柏林 Light shaving board and its producing process
CN102198684A (en) * 2011-04-06 2011-09-28 鲁丽集团有限公司 Oriented chipboard and processing technology
CN104493948A (en) * 2014-11-26 2015-04-08 南京林业大学 Preparation method for shaving board with high moisture content
CN104608211A (en) * 2015-02-06 2015-05-13 寿光市鲁丽木业有限公司 Plywood with super-thick core layer and preparation process thereof
CN104626292A (en) * 2015-02-06 2015-05-20 寿光市鲁丽木业有限公司 Surface-decorated oriented strand board and preparation process thereof
CN105082302A (en) * 2015-03-31 2015-11-25 西南林业大学 Manufacturing method of high-strength chipboard
CN105345913A (en) * 2015-09-25 2016-02-24 大亚人造板集团有限公司 High-water-resistance MUF resin for shaving board and production process and application thereof
CN107984589A (en) * 2017-12-31 2018-05-04 寿光市鲁丽木业股份有限公司 A kind of high-strength directional particieboard and its production method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1099328A (en) * 1994-03-16 1995-03-01 郭柏林 Light shaving board and its producing process
CN102198684A (en) * 2011-04-06 2011-09-28 鲁丽集团有限公司 Oriented chipboard and processing technology
CN104493948A (en) * 2014-11-26 2015-04-08 南京林业大学 Preparation method for shaving board with high moisture content
CN104608211A (en) * 2015-02-06 2015-05-13 寿光市鲁丽木业有限公司 Plywood with super-thick core layer and preparation process thereof
CN104626292A (en) * 2015-02-06 2015-05-20 寿光市鲁丽木业有限公司 Surface-decorated oriented strand board and preparation process thereof
CN105082302A (en) * 2015-03-31 2015-11-25 西南林业大学 Manufacturing method of high-strength chipboard
CN105345913A (en) * 2015-09-25 2016-02-24 大亚人造板集团有限公司 High-water-resistance MUF resin for shaving board and production process and application thereof
CN107984589A (en) * 2017-12-31 2018-05-04 寿光市鲁丽木业股份有限公司 A kind of high-strength directional particieboard and its production method

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Application publication date: 20180619

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