CN105235048A - High-performance wood composite material and preparation method and application thereof - Google Patents
High-performance wood composite material and preparation method and application thereof Download PDFInfo
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- CN105235048A CN105235048A CN201510623537.8A CN201510623537A CN105235048A CN 105235048 A CN105235048 A CN 105235048A CN 201510623537 A CN201510623537 A CN 201510623537A CN 105235048 A CN105235048 A CN 105235048A
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Abstract
The invention discloses a high-performance wood composite material and a preparation method and application thereof. The preparation method comprises the steps that waste wood materials are prepared into raw materials with the mesh number being 10-100 through a beating crusher and a grinding mill, the raw materials and powdery thermosetting resin are mixed evenly, then mat formation is conducted for forming a plate blank, then humidifying treatment is conducted on the surface of the plate blank, and the high-performance wood composite material is obtained by pressing the plate blank through a multistage depressurization hot-pressing technique. According to the high-performance wood composite material, no water-proofing agent is added, a drying procedure or a defibering procedure is omitted, the process is simple, energy consumption is small, and the pressed plate has the properties of being resistant to water, corrosion and heat, excellent in mechanical property, good in dimension stability, low in formaldehyde release amount and the like. The high-performance wood composite material can be used indoors and outdoors.
Description
Technical field
The invention belongs to Material Field, be specifically related to a kind of high-performance composite wooden material and its preparation method and application.
Background technology
Along with Chinese Urbanization construction develops rapidly, urban waste wood material, as waste wood furniture, waste wood floor, discarded construction and decoration wood materials etc., generating capacity is increasing.How effectively to utilize these Waste Wood-based Materials, manufacture good mechanical performance, water-fast, corrosion resistant, Form aldehyde release are low, good stability of the dimension, the composite wooden material of heat-resisting ageing-resisting performance, are social concerns and major issue anxious to be resolved always.
Although particieboard, medium density fibre board (MDF) (MDF) and Wood-plastic material (WPC) are produced on Furniture manufacture, floor, and be widely applied in interior decoration, but because particieboard and medium density fibre board (MDF) resistance to water, rotproofness are not ideal enough, be greatly limited in outdoor application.Though Wood-plastic material has good resistance to water and rotproofness, because heat-resisting ageing-resisting is poor, and production cost is high, and price height enterprise, is difficult to wide popularization and application.
Summary of the invention
For solving the problem and the weak point of existing composite wooden material, primary and foremost purpose of the present invention is to overcome existing particieboard and medium density fibre board (MDF) is not water-fast and dimensional instability, antiseptic property are poor, and overcome the undesirable shortcoming of Wood-plastic material heat aging property, there is provided a kind of water-fast, corrosion resistant, good mechanical performance, good stability of the dimension, Form aldehyde release are low, have the preparation method of the composite wooden material of certain heat-resisting ageing-resisting performance and higher force performance.The method is without the need to fiber separation and drying process thereof, and technique is simple, and energy consumption is low.Adopt powdery thermosetting resin and humidification processing method, obtained smooth surface, function admirable, can be used as the materials such as furniture, floor, construction and decoration; Also make daily living article, furniture parts or ceiling fan parts by mould mold pressing.
Another object of the present invention is to the high-performance composite wooden material providing above-mentioned preparation method to obtain.
Another object of the present invention is the application providing above-mentioned high-performance composite wooden material.
For achieving the above object, the present invention adopts following technical scheme:
A preparation method for high-performance composite wooden material, comprises the steps:
(1) Waste Wood-based Materials is rejected the handware such as metal, plastics, and the impurity such as silt, obtain clean wood materials raw material, clean wood materials raw meal is broken into the raw material of 10 ~ 100 order numbers;
(2) powdery thermosetting resin is applied in the obtained raw material of step (1), and stirs;
(3) material that step (2) mixes evenly is mated formation, and pre-molding is the slab with certain length, width and thickness;
(4) obtained to step (3) steel slab surface is evenly humidified process;
(5) hot pressing of multistage release technique is adopted to the be humidified slab handled well of step (4), obtain described high-performance composite wooden material.
Waste Wood-based Materials described in step (1) comprises at least one in urban waste wood material, timber delimbing material, forest thinning brush wood and wood machining residues.The raw material that moisture content is higher, requires to stack, and makes its moisture content be down to 16% and following, then is prepared as the raw material of 10 ~ 100 order numbers with beating crusher, broken machine of regrinding.
Described urban waste wood material comprises the wood furnitures such as discarded fancy wood chipboard, medium density fibre board (MDF) and solid wood furniture, at least one in waste wood floor and discarded construction and decoration wood materials etc.
Described in step (2), powdery thermosetting resin refers to powdered phenol-formaldehyde resin; Described thermosetting resin resin added is 8 ~ 30%.
Also comprise in step (2) and add filler in the obtained raw material of step (1), increase composite wooden material performance further; Described filler comprises at least one in wood-fibred, quartz and mica etc.; The addition manner of described wood-fibred mats formation to be uniformly mixed on top layer or with raw material and powdery thermosetting resin, and the addition manner of described quartz and mica directly mats formation at sandwich layer or with raw material and powdery thermosetting resin to be uniformly mixed.
Described filling adding amount is 3% ~ 15% of the material quality after step (1) is pulverized.
Humidification process described in step (4) comprises the special spray of employing, is coated with, spills equipment, and steam-jetting type hot press spray steaming humidizer carries out humidification process, humidizer comprises running water or has the mixing water of additive, and amount of humidification (i.e. the amount of humidizer) is 3% ~ 12% of the material quality after step (1) pulverizing.
Heat pressing process described in step (5), hot pressing temperature 150 ~ 180 DEG C, hot pressing pressure is 1.8 ~ 3.5MPa, and the every 1mm thickness of slab of hot pressing time is 30 ~ 45s; When release pressure drops to 0.8 ~ 1.3MPa, pressurize 15 ~ 30s, and then slowly unload and be depressed into zero.
Present invention also offers a kind of high-performance composite wooden material obtained by above-mentioned preparation method.
Above-mentioned high-performance composite wooden material can be used as furniture or constructional ornamental material, can also make various daily living article as flowerpot, electrical enclosure, sole etc. by mould mold pressing, and furniture parts, ceiling fan parts etc.
Compared with prior art, the present invention has the following advantages and beneficial effect:
(1) composite wooden material that obtains of the present invention, do not add waterproofing agent, and there is water-fast, corrosion resistant, heat-resisting, and the performance such as good mechanical performance, good stability of the dimension, Form aldehyde release be low, overcome existing particieboard and medium density fibre board (MDF) is not water-fast and dimensional instability, antiseptic property are poor, and overcome the undesirable shortcoming of Wood-plastic material heat aging property.
(2) the composite wooden material water resistance that obtains of the present invention is excellent, both can be used for the environment of indoor seasoning environment or such as kitchen, toilet humidity, also can in outdoor application.
(3) raw material adopted in the inventive method is without the need to fiber separation and drying process thereof, and technique is simple, and power consumption is few.In addition, the method of powdery thermosetting resin and humidification process is adopted in the inventive method, make the composite wooden material smooth surface, the function admirable that obtain, can be used as the materials such as furniture, floor, construction and decoration, various daily living article can also be made as flowerpot, electrical enclosure, sole etc. by mould mold pressing, and furniture parts, ceiling fan parts etc.
Accompanying drawing explanation
Fig. 1 is the composite wooden material structural representation of raw material Homogeneous phase mixing of the present invention, shaping and hot pressing.
Fig. 2 be raw material Homogeneous phase mixing of the present invention and shaping after, then the composite wooden material structural representation of top layer hot pressing that wood-fibred is mated formation.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment 1
A preparation method for high-performance composite wooden material, comprises the steps:
(1) be ground into 40 ~ 60 order numbers after discarded fancy wood chipboard and medium density fibre board (MDF) furniture being rejected impurity, moisture content is the raw material of 12%;
(2) be uniformly applied to by powdered phenol-formaldehyde resin in the obtained raw material of step (1), and adopt high-speed mixer to mix, resin added is 15%;
(3) material that step (2) mixes evenly mated formation and be pressed into the slab of certain length, width, thickness in advance;
(4) spray moisture with manual pneumatic sprayer unit, the steel slab surface that humidification treatment step (3) is obtained, amount of humidification is 5% of the material quality after step (1) is pulverized;
(5) adopt three sections of step-down heat pressing process to step (4) slab handled well that is humidified, hot pressing temperature 180 DEG C, hot pressing pressure 3.5MPa, hot pressing time is under 180s condition, and compacting obtains high-performance composite wooden material P
w5, wherein, in buck stage, when pressure drops to 1.1MPa, pressurize 30s, and then slowly unload and be depressed into zero.Composite wooden material P
w5structural representation as shown in Figure 1.
According to above-mentioned technique, except amount of humidification in step (4) be respectively step (1) pulverize after material quality 0%, 10%, obtained high-performance composite wooden material P respectively
w0and P
w10.
By the composite wooden material P that said method compacting nominal thickness is 6.0mm
w0, P
w5and P
w10, by GB/T17657-2013 test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels, measure density, moisture content, 24h expansion rate of water absorption, MOR, elastic modelling quantity and internal bond strength, the results are shown in Table 1.
Table 1 sheet material physical and mechanical property result table
Note: P
w0, P
w5, P
w10be respectively the sheet material of amount of humidification 0%, 5%, 10%.
Embodiment 2
A preparation method for high-performance composite wooden material, comprises the steps:
(1) be ground into 60 order numbers after discarded fancy wood chipboard and medium density fibre board (MDF) furniture being rejected impurity, moisture content is the raw material of 12%;
(2) be uniformly applied to by powdered phenol-formaldehyde resin in the obtained raw material of step (1), and adopt high-speed mixer to mix, resin added is 15%;
(3) material that step (2) mixes evenly mated formation and be pressed into the slab of certain length, width, thickness in advance, and then evenly mating formation wood-fibred in steel slab surface, and carrying out precompressed; Wherein wood fiber dimension: to be greater than 14 orders be 18%, 28 ~ 100 orders is 56%, and being less than 200 orders is 16%, and applied amount is 5%;
(4) spray moisture with manual pneumatic sprayer unit, the steel slab surface that humidification treatment step (3) is obtained, amount of humidification is 5% of the material quality after step (1) is pulverized;
(5) adopt three sections of step-down heat pressing process to step (4) slab handled well that is humidified, hot pressing temperature 180 DEG C, hot pressing pressure 2.0MPa, hot pressing time is under 400s condition, and compacting obtains high-performance composite wooden material P
f5, wherein, in buck stage, when pressure drops to 1.1MPa, pressurize 15s, and then slowly unload and be depressed into zero.Composite wooden material P
f5structural representation as shown in Figure 2.
According to above-mentioned technique, except wood-fibred applied amount in step (3) is respectively 0%, 10%, 15%, obtained high-performance composite wooden material P respectively
f0, P
f10, P
f15.
By the composite wooden material P that said method compacting nominal thickness is 6.0mm
f0, P
f5, P
f10, P
f15, by GB/T17657-2013 test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels, measure density, moisture content, 24h expansion rate of water absorption, MOR, elastic modelling quantity and internal bond strength, the results are shown in Table 2.
Table 2 sheet material physical and mechanical property result table
Note: P
f0, P
f5, P
f10, P
f15be respectively the sheet material that plate surface wood-fibred applied amount is 0%, 5%, 10%, 15%.
Embodiment 3
A preparation method for high-performance composite wooden material, comprises the steps:
(1) be ground into 40 order numbers after discarded fancy wood chipboard and medium density fibre board (MDF) furniture being rejected impurity, moisture content is the raw material of 12%;
(2) be uniformly applied to by powdered phenol-formaldehyde resin in the obtained raw material of step (1), and adopt high-speed mixer to mix, resin added is 10%;
(3) material that step (2) mixes evenly mated formation and be pressed into the slab of certain length, width, thickness in advance;
(4) spray moisture with manual pneumatic sprayer unit, the steel slab surface that humidification treatment step (3) is obtained, amount of humidification is 5% of the material quality after step (1) is pulverized;
(5) adopt three sections of step-down heat pressing process to step (4) slab handled well that is humidified, hot pressing temperature 180 DEG C, hot pressing pressure 3.5MPa, hot pressing time is under 300s condition, and compacting obtains high-performance composite wooden material P
r10, wherein, in buck stage, when pressure drops to 1.1MPa, pressurize 15s, and then slowly unload and be depressed into zero.
According to above-mentioned technique, except phenolic resins resin added in step (2) is 15%, obtained high-performance composite wooden material P
r15.
By the composite wooden material P that said method compacting nominal thickness is 6.0mm
r10and P
r15, by the Extraction method in GB/T17657-2013 test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels, measure burst size of methanal, the results are shown in Table 3.
Table 3 sheet material burst size of methanal result table
Note: P
r10, P
r15be respectively the sheet material applying powdered phenol-formaldehyde resin amount 10%, 15%.
Embodiment 4
A preparation method for high-performance composite wooden material, comprises the steps:
(1) be ground into 80 ~ 120 order numbers after discarded fancy wood chipboard and medium density fibre board (MDF) furniture being rejected impurity, moisture content is the raw material of 12%;
(2) be uniformly applied to by powdered phenol-formaldehyde resin in the obtained raw material of step (1), and adopt high-speed mixer to mix, resin added is 10%;
(3) material that step (2) mixes evenly mated formation and be pressed into the slab of certain length, width, thickness in advance;
(4) spray moisture with manual pneumatic sprayer unit, the steel slab surface that humidification treatment step (3) is obtained, amount of humidification is 5% of the material quality after step (1) is pulverized;
(5) adopt three sections of step-down heat pressing process to step (4) slab handled well that is humidified, hot pressing temperature 160 DEG C, hot pressing pressure 3.5MPa, hot pressing time is under 120s condition, and compacting obtains high-performance composite wooden material P
r10, wherein, in buck stage, when pressure drops to 1.1MPa, pressurize 20s, and then slowly unload and be depressed into zero.
According to above-mentioned technique, except phenolic resins resin added in step (2) is respectively 20%, 30%, obtained high-performance composite wooden material P respectively
r20and P
r30.
By the composite wooden material P that said method compacting nominal thickness is 6.0mm
r10, P
r20and P
r30, by GB/T17657-2013 test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels, measure accelerated ageing performance, the results are shown in Table 4.
Plate property result table after table 4 accelerated aging test
Note: 1.P
r10, P
r20, P
r30be respectively the sheet material applying powdered phenol-formaldehyde resin 10%, 20%, 30%.
Select Coriolus (CoriolusVersicolor), by GB/T13942.1-2009 Natural Resistance of Wood To Microbial Deterioration laboratory test methods, the nominal thickness measuring said method compacting is the composite wooden material of 6.0mm and medium density fibre board (MDF) (MDF), corrosion resistant performance than the wood plastic composite (WPC) for 4:6 moulded by wood.The results are shown in Table 5.
Table 5 sheet material corrosion resistant performance result table
| Sheet material kind | Mass loss rate (%) | Corrosion resistant grade |
| P r10 | 5.12 | Strong corrosion resistant |
| P r20 | 3.78 | Strong corrosion resistant |
| P r30 | 3.43 | Strong corrosion resistant |
| MDF | 35.51 | Slightly corrosion resistant |
| WPC | 4.84 | Strong corrosion resistant |
Note: P
r10, P
r20, P
r30be respectively the sheet material applying powdered phenol-formaldehyde resin amount 10%, 20%, 30%.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (10)
1. a preparation method for high-performance composite wooden material, is characterized in that, comprises the steps:
(1) pulverizing again will be pulverized also after the Waste Wood-based Materials removal of impurity and make raw material;
(2) powdery thermosetting resin is applied in the obtained raw material of step (1), and stirs;
(3) material that step (2) mixes evenly is mated formation and is pressed into slab in advance;
(4) obtained to step (3) steel slab surface is evenly humidified process;
(5) hot pressing of multistage release technique is adopted to the be humidified slab handled well of step (4), obtain described high-performance composite wooden material.
2. the preparation method of a kind of high-performance composite wooden material according to claim 1, it is characterized in that, the Waste Wood-based Materials described in step (1) comprises at least one in urban waste wood material, timber delimbing material, forest thinning brush wood and wood machining residues.
3. the preparation method of a kind of high-performance composite wooden material according to claim 2, it is characterized in that, described urban waste wood material comprises the wood furniture of discarded fancy wood chipboard, medium density fibre board (MDF) and solid wood, at least one in waste wood floor and discarded construction and decoration wood materials.
4. the preparation method of a kind of high-performance composite wooden material according to claim 1, is characterized in that, the powdery thermosetting resin described in step (2) comprises powdered phenol-formaldehyde resin; Described thermosetting resin resin added is 8 ~ 30%.
5. the preparation method of a kind of high-performance composite wooden material according to claim 1, is characterized in that, also comprise in step (2) add filler to step (1) obtain raw material in; Described filler comprises at least one in wood-fibred, quartz and mica; The addition manner of described wood-fibred mats formation to be uniformly mixed on top layer or with raw material and powdery thermosetting resin, and the addition manner of described quartz and mica directly mats formation at sandwich layer or with raw material and powdery thermosetting resin to be uniformly mixed.
6. the preparation method of a kind of high-performance composite wooden material according to claim 5, is characterized in that, described filling adding amount is 3 ~ 15% of the material quality after step (1) is pulverized.
7. the preparation method of a kind of high-performance composite wooden material according to claim 1, it is characterized in that, humidification process described in step (4) comprises spray, be coated with or spill the method for humidizer carries out humidification process, humidizer comprises running water or has the mixing water of additive, and the amount of humidizer is 3% ~ 12% of the material quality after step (1) is pulverized.
8. the preparation method of a kind of high-performance composite wooden material according to claim 1, it is characterized in that, hot pressing parameters described in step (5) is: hot pressing temperature 150 ~ 180 DEG C, and hot pressing pressure is 1.8 ~ 3.5MPa, and the every 1mm thickness of slab of hot pressing time is 30 ~ 45s; When release pressure drops to 0.8 ~ 1.3MPa, pressurize 15 ~ 30s, and then unload and be depressed into zero.
9. the high-performance composite wooden material obtained by the preparation method of a kind of high-performance composite wooden material described in any one of claim 1 to 8.
10. the application of high-performance composite wooden material according to claim 9, is characterized in that, described high-performance composite wooden material is used as furniture or constructional ornamental material, or makes daily living article by mould mold pressing.
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| CN113752355A (en) * | 2021-09-17 | 2021-12-07 | 天津市路德隆环保材料科技有限公司 | Production process and device for recyclable chemical molecular synthetic material |
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| CN113752355A (en) * | 2021-09-17 | 2021-12-07 | 天津市路德隆环保材料科技有限公司 | Production process and device for recyclable chemical molecular synthetic material |
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Application publication date: 20160113 |