CN106113208A - A kind of method utilizing acrylic monomers dielectric barrier discharge plasma to strengthen agricultural crop straw glue performance - Google Patents
A kind of method utilizing acrylic monomers dielectric barrier discharge plasma to strengthen agricultural crop straw glue performance Download PDFInfo
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- CN106113208A CN106113208A CN201610463531.3A CN201610463531A CN106113208A CN 106113208 A CN106113208 A CN 106113208A CN 201610463531 A CN201610463531 A CN 201610463531A CN 106113208 A CN106113208 A CN 106113208A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE 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
- B27N1/00—Pretreatment of moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/0015—Treating of wood not provided for in groups B27K1/00, B27K3/00 by electric means
- B27K5/002—Electric discharges, plasma
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE 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
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
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- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Manufacturing & Machinery (AREA)
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- Plasma & Fusion (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
Abstract
The present invention relates to a kind of utilize dielectric barrier discharge plasma to improve agricultural crop straw surface wettability and the method for interface bonding strength.Belong to wood-based plate manufacturing technology field.Its technique is by straw defoliation, sheath, joint, is cut into 2～30cm length, after softened, dried, adjusts moisture content to 6～10%, is put in acrylic monomers dielectric barrier discharge plasma and processes the quartz reaction chamber of straw special purpose device and process；Reaction chamber will be passed through containing acrylic acid gas, controlling cavity pressure by vacuum pump is 10～100kPa, open plasma electrical source, regulation discharge power is 20～500W, electrode spacing is 5～12mm, make interelectrode gas excite electric discharge to produce low temperature plasma, and persistently process straw surface 10～600s；At treated agricultural crop straw top sizing, adhesive solidification after hot pressing, is made to obtain bonding strength.Gluing between the method outer surface interior in being remarkably improved straw, inside and outside and outer, improves stalk board product quality, and equipment operation, efficient energy-saving, environmental protection and public nuisance free simple, easy.
Description
Technical field
The present invention relates to one, to utilize dielectric barrier discharge plasma to improve Wheat straw wettability and interface glued strong
The method of degree.Belong to wood-based plate manufacturing technology field.
Background technology
China is the country that forest reserves are the poorest, for a long time, there is the contradiction that timber supply and demand is nervous always.
After implementing wildwood protected project, many areas, the whole nation have been carried out taboo and have been cut down, numerous wood-based plate manufacture enterprises with timber as raw material
Industry faces the crisis stopping production or changing the line of production because of starving, in the urgent need to finding preferable alternative materials.Meanwhile, China is again
It is a traditional large agricultural country, has abundant agricultural straw resource.According to statistics, whole nation agricultural crop straw every year on average produces
Amount reaches 8.20 hundred million tons, and wherein 75.6% is wheat straw, Caulis et Folium Oryzae and corn straw.For a long time, agricultural crop straw be mainly used as fertilizer,
Fuel, feedstuff and paper making raw material.Along with scientific and technological progress, such use severe weakness.At present, many local popularization straws are also
Fertilizer is made in field, gasifying stalk producing methane, stalk fermentation make feedstuff etc., but these purposes straw consumptions are little, still have about 50%
Straw do not obtain Appropriate application.The problem of outlet of straw, makes vast farmers be stymied by.Every harvest season, big of peasant
Long-pending crop straw burning, pollutes environment, affects traffic, it has also become serious social effects of pollution.Utilize crops straw the most scientifically and rationally
Stalk resource, helps peasant to solve this thorny problem, it has also become government department attaches great importance to, the focus that scientific research personnel pays close attention to very much
One of problem.The result of scientific research shows, agricultural crop straw has similar structure and character to timber, is wood-based panel product
Manufacture preferable raw material.But, owing to major part agricultural crop straw rich surface is unfavorable for glued material containing horny layer etc., formed
Weak interface layer, has had a strong impact on the glue performance of product, becomes the main of restriction straw-based panel industry development
One of technical barrier.At present mainly by using expensive high-strength adhesive (such as isocyanate glue) in industrialized production
The problem solving straw gluing difficulty, but bring again that production cost is high, complex manufacturing (needs supporting demoulding skill simultaneously
Art, applying glue guard technology etc.) etc. problem, cause product market competition indifferent, it is difficult to expand market access, and cause crops straw
Stalk wood-based plate Industrialization Progress is slow.For the technical barrier of agricultural crop straw interface gluing difficulty, scientific research personnel mainly uses
The methods such as mechanical treatment process, wet heat treatment method, physical treatment process, method of chemical treatment and biological treatment carry out surface to straw
Modification, to improving surface activity, improves interface glue performance.
Plasma, as a kind of physical treatment process, is the dry modification technique of a kind of cleaning, has great market and dives
Power and development prospect.Plasma is a kind of high-octane material aggregation state, wherein contains substantial amounts of electronics, ion, excited state
Atom, molecule, photon and free radical isoreactivity particle.Utilize plasma that material carries out process and can cause material surface
Physical change (such as etching, desorbing, sputter, inject, excite and ionization etc.) and chemical change are (as aoxidized, decompose, cross-link, being polymerized
With grafting etc.), (include hydrophilic, hydrophobicity, cohesive, anti-flammability, anti-corrosive properties, anti-quiet reaching to change material surface characteristic
Electrically and biocompatibility) purpose.Plasma can be divided into height according to size and the macroscopic property of constituent particle energy
Isothermal plasma and low temperature plasma, low temperature plasma is divided into again hot plasma (thermodynamical equilibrium) and cold plasma
(non-equilibrium thermodynamics), wherein in hot plasma, the most thousand of degree of the energy of particle, to hundreds of thousands degree, is generally used for needing high temperature
The field of operation, such as magnetohydrodynamic generator, plasma welding, cutting, plasma smelting, plasma spray coating, plasma
Preparation micropowder etc..In cold plasma, the temperature of different particles differs, wherein the temperature of electronics from thousand of degree to several
100000 degree, and the temperature of ion is very nearly the same with room temperature, Just because of this, it has important using value, as material
Material modifying surface and light source etc..
Cold plasma can pass through glow discharge, corona discharge, dielectric barrier discharge, radio-frequency discharge and microwave discharge
Produce etc. mode.Dielectric barrier discharge is a kind of nonequilibrium state gas discharge having dielectric to insert discharge space.At two
It is full of certain working gas between sparking electrode, and wherein one or two electrode dielectric is covered, it is also possible to will be situated between
Matter is hung directly from discharge space or uses granular Filled Dielectrics wherein, applies sufficiently high alternating voltage when between two electrodes
Time, interelectrode gas can be breakdown and produce electric discharge, i.e. creates dielectric barrier discharge.In actual applications, pipeline
Electrode structure is widely used in various chemical reactor, and Flat electrode structure is then widely used in industry
Macromolecule and metallic film and the modification of sheet material, grafting, capillary raising, cleaning and hydrophilic modifying in.
This patent utilizes and is mainly composed of the hybrid reaction gas of acrylic monomers as working gas, passes through dielectric impedance
The mode of electric discharge excites, and is allowed to be applied to the activation modification on straw surface.Have that exciting power is low, launching efficiency is high, operation
The features such as simplicity, operation environment safety.
Summary of the invention
It is an object of the invention to the hybrid reaction gas to be mainly composed of acrylic monomers as modified atmospheres, utilize medium
Straw modifying surface is processed by barrier discharge plasma, makes straw surface be activated, and improves the freedom on straw surface
Energy and wettability, enable wood materials to commonly use adhesive and preferably sprawled on straw surface and infiltrate, thus significantly increase
The glue performance of strong straw.
The technical solution of the present invention:
A kind of method utilizing acrylic monomers dielectric barrier discharge plasma to strengthen agricultural crop straw glue performance, should
Method, by agricultural crop straw defoliation, sheath, joint, is cut into the unit of 2～30cm length, after softened and dried, is adjusted by moisture content
To 6～10%；Modifying agent is added in liquid containing bottle by liquid containing bottle feeding cover mouth, and the mouth that closes the lid；Open quartz reaction chamber lid
Plate, the straw after processing is put into agricultural crop straw acrylic monomers dielectric barrier discharge plasma and is processed the stone of special purpose device
In English reaction chamber, and cover cover plate；At ambient temperature, utilize negative pressure shape to become assembly to aspirate reaction chamber, and keep reaction chamber pressure
Power at 1kPa to assign more than 10 minutes, to remove air therein；It is mainly composed of acrylic acid by produced by gas supply assembly
The import from quartz reaction chamber of the hybrid reaction gas of monomer is passed through, and the outlet in quartz reaction chamber connects negative pressure shape and becomes assembly, and controls
The pressure of quartz reaction intracavity processed is 10～100kPa, opens plasma electrical source, and regulation discharge power is 20～500W, electrode
Spacing is 5～12mm, makes the hybrid reaction gas of the acrylic monomers between electrode produce low temperature etc. by dielectric barrier discharge
Gas ions, processes agricultural crop straw modifying surface, and the process time is 10～600s；Then, it is being modified the agriculture of process
Crop material surface coating binder, makes adhesive solidification obtain bonding strength after hot pressing.
Described method, the agricultural crop straw acrylic monomers dielectric barrier discharge plasma of employing processes special purpose device
Including gas supply assembly, plasma produces assembly, discharge assembly becomes assembly with negative pressure shape；Wherein said gas supply assembly includes storage
Liquid bottle (interior placement modifying agent), feeding cover mouth and trachea, plasma produces assembly and includes that power supply, discharge assembly include power-on and power-off
Pole plate, quartz reaction ware, quartz cover plate, reaction chamber, interface 6 (connecing gas supply assembly) and interface 12 (connect negative pressure shape and become assembly), negative
Swaging becomes assembly to include vacuum pump, electromagnetic valve, vacuometer and trachea；
Described method, its agricultural crop straw softens and the method for dried is that straw unit is placed in distilled water leaching
Bubble 1～5h, after fully softening, is laid on glass, is placed on ventilation airing under pressure, then uses air dry oven
1～3h it is dried under the conditions of 60 DEG C；
Described method, wherein the hybrid reaction gas of acrylic monomers includes acrylic acid, methacrylic acid, acryloyl
One or more in the steam such as amine, glycidyl methacrylate；
Described method, wherein modifying agent includes acrylic acid, methacrylic acid, acrylamide, Glycidyl methacrylate
Glyceride etc. are heated one or more in volatile acrylic compounds reagent；
Described method, wherein the agricultural crop straw surface coating binder being modified process be urea-formaldehyde resin adhesive, three
One in poly cyanamid modified urea-formaldehyde resin glue, phenolic resin glue；
Described method, wherein the hot pressing technique of gluing agricultural crop straw unit is, single spreading amount be 200～
250g/m2, hot pressing temperature is 110～150 DEG C, and hot pressing pressure is 1.2～1.5MPa, and hot pressing time is 60～90s；
Described method, wherein agricultural crop straw includes wheat straw, rice straw, corn stalk, Sorghum vulgare Pers. stalk, phragmites communis etc..
Advantages of the present invention: (1) equipment is simple, easily operation: this invention dielectric barrier discharge plasma processes special
Device, is different from that vacuum radio frequency plasma is high to equipment requirements, energy consumption big, its can in low pressure or normal atmosphere pressure work,
Simple to operate controlled, provide practical basis for large-scale industrial production.(2) energy-efficient: putting needed for plasma generation
Electrical power is low, only 20～500W, and the process time is also only 10s～600s, and treatment effeciency is high and energy consumption low (3) environmental protection is without public affairs
Evil: use the reagent treatment through the hybrid reaction gas that can get acrylic monomers that volatilizees, by Smoking regime, and by electromagnetic valve
Controlling low pressure in reaction chamber, can improve the stability of reaction system, reagent utilization rate can reach more than 85%；Do not exist at waste liquid
The problems such as reason, combustion explosion, will not cause any damage to environment and the person.(4) effect is notable: be situated between through acrylic monomers
After the process of matter barrier discharge plasma, the reactivity on straw surface significantly improves, and glue performance is remarkably reinforced.
Accompanying drawing illustrates:
Accompanying drawing 1 is that agricultural crop straw acrylic monomers dielectric barrier discharge plasma processes special purpose device schematic diagram
In figure: 1-liquid containing bottle, 2-modifying agent, 3-trachea, 4-liquid containing bottle feeding cover mouth, 5-power supply, 6/12-interface, 7-
Reaction chamber, 8-quartz cover plate, 9-battery lead plate, 10-modification test specimen, 11-quartz reaction ware, 13-vacuometer, 14-electromagnetic valve, 15-
Vacuum pump.
Detailed description of the invention:
Comparative example 1:
By Wheat Straw then, through defoliation, sheath, joint, choose smooth part and be cut into 5cm length, cut open from centre with pocket knife
Open, be placed in distilled water immersion 5h, after fully softening, uniformly divide on glass, be placed on ventilation weight and press a week,
Then taking off, be placed in screen cloth, air dry oven 60 degrees Celsius is dried and reaches about 8% to moisture content in 1 hour, then seals bag
It is stored in drying basin standby.
Early stage is flattened dried wheat straw and is cut into 10cm length, and measure 2cm at smooth place, its end, as being coated with glue glued adhesion
Position, measures width, calculates glued area.Then table within the wheat straw after processing respectively with urea-formaldehyde resin adhesive for adhesive
Face, the surfaces externally and internally surface combination different with outer outer surface three kinds is bonded together that (every kind of condition parallel sample is 20
Group), glue-spread is one side 200g/m2, the heat pressing process of employing be hot pressing temperature be 110 DEG C, hot pressing pressure is 1.5MPa, hot pressing
Time is 90s.Bonding strength result see table 1.
Comparative example 2:
By rice straw then, through defoliation, sheath, joint, choose smooth part and be cut into 5cm length, cut open from centre with pocket knife
Open, be placed in distilled water immersion 3h, after fully softening, uniformly divide on glass, be placed on ventilation weight and press a week,
Then taking off, be placed in screen cloth, air dry oven 60 degrees Celsius is dried and reaches about 6% to moisture content in 2 hours, then seals bag
It is stored in drying basin standby.
With phenolic resin as adhesive, with outer surface interior, inside and outside and outer in the method gluing Wheat Straw in comparative example 1,
Glue-spread is one side 220g/m2, the heat pressing process of employing be hot pressing temperature be 120 DEG C, hot pressing pressure is 1.0MPa, hot pressing time
For 60s.Bonding strength data see table 2.
, there is the defect that bonding strength is low, it is difficult to for straw in the straw glueing material that described in comparative example 1,2 prepared by method
The large-scale production of stalk class wood-based plate.
Embodiment 1:
By Wheat Straw then, through defoliation, sheath, joint, choose smooth part and be cut into 5cm length, cut open from centre with pocket knife
Open, be placed in distilled water immersion 5h, after fully softening, uniformly divide on glass, be placed on ventilation weight and press a week,
Then taking off, be placed in screen cloth, air dry oven 60 degrees Celsius is dried and reaches about 8% to moisture content in 1 hour, then seals bag
It is stored in drying basin standby.
Early stage is flattened dried wheat straw and is cut into 10cm length, and measure 2cm at smooth place, its end, as being coated with glue glued adhesion
Position, measures width, calculates glued area.
Open quartz cover plate 8, the straw reduced is placed in two electricity of dielectric barrier discharge plasma electric discharge device
In quartz reaction chamber between pole plate, and cover cover plate；Using acrylamide 50ml as modifying agent, fallen by feeding cover mouth 4
Enter in liquid containing bottle 1, and cover feeding cover mouth；(include connecting between quartz reaction ware, liquid containing bottle and each several part at whole apparatus system
The pipeline connect) be in room temperature (less than 25 DEG C) under conditions of, utilize the swabbing action of vacuum pump 15, whole apparatus system taken out very
Empty (chamber pressure is less than 1kPa) 10 minutes, to remove air therein；Under conditions of acrylamide is heated to 60 DEG C, modified examination
Agent volatilization produces acrylamide steam；By the swabbing action of vacuum pump 15, in quartz reaction chamber 7 formed lower pressure environment (by
Vacuometer 13 and electromagnetic valve 14 control chamber pressure 10kPa), and acrylamide steam is passed through reaction chamber 7 by interface 6；Regulation power supply
Discharge power is 500W, and battery lead plate spacing is 12mm, the mixed gas discharge in provocative reaction ware, produces dielectric barrier discharge etc.
Gas ions, acts on straw surface and is allowed to surface modification；Continue plasma treatment straw 120s.Then with urea-formaldehyde resin adhesive as glue
Glutinous agent will process respectively after wheat straw within inner surface, the surfaces externally and internally surface combination bonding different with outer outer surface three kinds
Together (every kind of condition parallel sample is 20 groups), glue-spread is one side 200g/m2, the heat pressing process of employing is that hot pressing temperature is
110 DEG C, hot pressing pressure is 1.5MPa, and hot pressing time is 90s.Bonding strength result see table 1.
Embodiment 2:
By Wheat Straw then, through defoliation, sheath, joint, choose smooth part and be cut into 5cm length, cut open from centre with pocket knife
Open, be placed in distilled water immersion 5h, after fully softening, uniformly divide on glass, be placed on ventilation weight and press a week,
Then taking off, be placed in screen cloth, air dry oven 60 degrees Celsius is dried and reaches about 8% to moisture content in 1 hour, then seals bag
It is stored in drying basin standby.
Early stage is flattened dried wheat straw and is cut into 10cm length, and measure 2cm at smooth place, its end, as being coated with glue glued adhesion
Position, measures width, calculates glued area.It is placed between two dielectrics of dielectric barrier discharge plasma electric discharge device
It is modified processing.Use step described in embodiment 1, using glycidyl methacrylate as modifying agent.By adding
Heat modification reagent, be passed through at interface 6 volatilization produce steam, discharge power be 200W, electrode spacing be 10mm, chamber pressure
100kPa, process time are 10s.Then inner surface, interior within the wheat straw after processing respectively with urea-formaldehyde resin adhesive for adhesive
The outer surface surface combination different with outer outer surface three kinds is bonded together (every kind of condition parallel sample is 20 groups), gluing
Amount is one side 200g/m2, the heat pressing process of employing be hot pressing temperature be 110 DEG C, hot pressing pressure is 1.5MPa, and hot pressing time is
90s.Bonding strength result see table 1.
Embodiment 3:
By rice straw then, through defoliation, sheath, joint, choose smooth part and be cut into 5cm length, cut open from centre with pocket knife
Open, be placed in distilled water immersion 3h, after fully softening, uniformly divide on glass, be placed on ventilation weight and press a week,
Then taking off, be placed in screen cloth, air dry oven 60 degrees Celsius is dried and reaches about 6% to moisture content in 2 hours, then seals bag
It is stored in drying basin standby.
Early stage is flattened dried wheat straw and is cut into 10cm length, and measure 2cm at smooth place, its end, as being coated with glue glued adhesion
Position, measures width, calculates glued area.It is placed between two dielectrics of dielectric barrier discharge plasma electric discharge device
It is modified processing.Use step described in embodiment 1, using acrylic acid as modifying agent.By heating propylene acid, from interface
Be passed through at 6 volatilization produce acrylic acid steam, discharge power be 20W, electrode spacing be 8mm, chamber pressure 50kPa, process time
For 600s.Then inner surface, surfaces externally and internally and appearance within the wheat straw after processing respectively with phenolic resin glue for adhesive
The different surface combination in three kinds of face is bonded together (every kind of condition parallel sample is 20 groups), and glue-spread is one side 220g/
m2, the heat pressing process of employing be hot pressing temperature be 120 DEG C, hot pressing pressure is 1.0MPa, and hot pressing time is 60s.Bonding strength is tied
Fruit see table 2.
From embodiment 1-3, after plasma modification processes, the bonding strength between straw surface has had larger amplitude
The raising of degree, the wherein interior the highest raising of inner surface gluing 38%, the highest raising of surfaces externally and internally gluing 233%, outer outer surface gluing
From almost cannot gluing improving to 0.32MPa, compared to comparative example 1-2, there is clear superiority.
Bonding strength measurement result before and after the process of straw surface:
Table 1
Table 2
Claims (8)
1. utilize the method that acrylic monomers dielectric barrier discharge plasma strengthens agricultural crop straw glue performance, the party
Method, by agricultural crop straw defoliation, sheath, joint, is cut into the unit of 2～30cm length, after softened and dried, moisture content is adjusted to 6
～10%；Modifying agent is added in liquid containing bottle by liquid containing bottle feeding cover mouth, and the mouth that closes the lid；Open quartz reaction chamber cover plate,
Straw after processing is put into agricultural crop straw acrylic monomers dielectric barrier discharge plasma and is processed the quartz of special purpose device
In reaction chamber, and cover cover plate；At ambient temperature, utilize negative pressure shape to become assembly to aspirate reaction chamber, and keep reaction chamber pressure
At 1kPa to assign more than 10 minutes, to remove air therein；It is mainly composed of acrylic acid list by produced by gas supply assembly
The import from quartz reaction chamber of the hybrid reaction gas of body is passed through, and the outlet in quartz reaction chamber connects negative pressure shape and becomes assembly, and controls
The pressure of quartz reaction intracavity is 10～100kPa, opens plasma electrical source, and regulation discharge power is 20～500W, between electrode
Away from for 5～12mm, make the hybrid reaction gas of the acrylic monomers between electrode by dielectric barrier discharge produce low temperature etc. from
Daughter, processes agricultural crop straw modifying surface, and the process time is 10～600s；Then, it is being modified the farming of process
Thing straw surface coating binder, makes adhesive solidification obtain bonding strength after hot pressing.
It is the most according to claim 1 that to utilize acrylic monomers dielectric barrier discharge plasma to strengthen agricultural crop straw glued
The method of performance, it is characterised in that: agricultural crop straw acrylic monomers dielectric barrier discharge plasma processes special purpose device bag
Include gas supply assembly, plasma produces assembly, discharge assembly becomes assembly with negative pressure shape；Wherein said gas supply assembly includes liquid storage
Bottle (interior placement modifying agent), feeding cover mouth and trachea, plasma produces assembly and includes that power supply, discharge assembly include upper/lower electrode
Plate, quartz reaction ware, quartz cover plate, reaction chamber, interface 6 (connecing gas supply assembly) and interface 12 (connect negative pressure shape and become assembly), negative pressure
Form assembly and include vacuum pump, electromagnetic valve, vacuometer and trachea.
It is the most according to claim 1 that to utilize acrylic monomers dielectric barrier discharge plasma to strengthen agricultural crop straw glued
The method of performance, it is characterised in that: agricultural crop straw softens and the method for dried is to be placed in distilled water by straw unit
Soak 1～5h, after fully softening, be laid on glass, be placed on ventilation airing under pressure, then use forced air drying
Case is dried 1～3h under the conditions of 60 DEG C.
It is the most according to claim 1 that to utilize acrylic monomers dielectric barrier discharge plasma to strengthen agricultural crop straw glued
The method of performance, it is characterised in that: the hybrid reaction gas of described acrylic monomers include acrylic acid, methacrylic acid, third
One or more in the steam such as acrylamide, glycidyl methacrylate.
It is the most according to claim 1 that to utilize acrylic monomers dielectric barrier discharge plasma to strengthen agricultural crop straw glued
The method of performance, it is characterised in that: described modifying agent includes acrylic acid, methacrylic acid, acrylamide, methacrylic acid
Ethylene oxidic esters etc. are heated one or more in volatile acrylic compounds reagent.
The most according to claim 1 utilize acrylic monomers dielectric barrier discharge plasma strengthen agricultural crop straw glue
The method closing performance, it is characterised in that: described is urea aldehyde tree at the agricultural crop straw surface coating binder being modified process
One in fat glue, cyanurotriamide modified urea resin glue, phenolic resin glue.
It is the most according to claim 1 that to utilize acrylic monomers dielectric barrier discharge plasma to strengthen agricultural crop straw glued
The method of performance, it is characterised in that: the hot pressing technique of described gluing agricultural crop straw unit is that single spreading amount is
200～250g/m2, hot pressing temperature is 110～150 DEG C, and hot pressing pressure is 1.2～1.5MPa, and hot pressing time is 60～90s.
It is the most according to claim 1 that to utilize acrylic monomers dielectric barrier discharge plasma to strengthen agricultural crop straw glued
The method of performance, it is characterised in that: described agricultural crop straw includes wheat straw, rice straw, corn stalk, Sorghum vulgare Pers. stalk, phragmites communis etc..
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| CN115946201A (en) * | 2022-11-30 | 2023-04-11 | 优优新材料股份有限公司 | Plamsa-based straw fiber treatment process for artificial board |
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| CN102397743A (en) * | 2010-09-16 | 2012-04-04 | 中国环境科学研究院 | Apparatus and method used for reducing CO2 by using dielectric barrier discharge plasma combined with biomass |
| CN102212971A (en) * | 2011-03-07 | 2011-10-12 | 安徽安生生物化工科技有限责任公司 | Method for processing straw through plasma |
| CN105314633A (en) * | 2015-11-12 | 2016-02-10 | 厦门大学 | Preparation method of activated carbon |
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