CN107498685A - Green straw stalk sheet production method - Google Patents
Green straw stalk sheet production method Download PDFInfo
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- CN107498685A CN107498685A CN201710454888.XA CN201710454888A CN107498685A CN 107498685 A CN107498685 A CN 107498685A CN 201710454888 A CN201710454888 A CN 201710454888A CN 107498685 A CN107498685 A CN 107498685A
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- stalk
- microcapsules
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Classifications
-
- 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
- B27N3/10—Moulding of mats
-
- 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
- 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
- B27N3/002—Manufacture of substantially flat articles, e.g. boards, from particles or fibres characterised by the type of binder
-
- 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
- B27N3/02—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention discloses a kind of green straw stalk sheet production method, preparation process：Rice straw particle → physics mats formation with the method surface treatment → uniform glue mixing → that chemistry is combined → precompressed → hot-forming → scale cutting edge → health → drying → deburring and surface treatment → product；In the surface treatment step, add and similar to stalk surface wax structure contain that silica chemical bonding structure is similar or similar chemical raw material, then, add it is a small amount of can under the conditions of 90 DEG C of temperatures above spot corrosion wax surface nano material, adding can be with the adhesive for forming hydrogen bond or chemical bond of polyhydroxy structure, finally, it is well mixed, is surface-treated with physical method.Board lightweight environmental protection prepared by this method, nonhazardous substance release, high intensity, fire-retardant sound insulation are moistureproof, and sheet material is smooth, and texture is unified attractive in appearance, is a kind of cheap, superior performance wooden boards substitute.
Description
Technical field
The present invention relates to a kind of preparation method of rice straw fiber board, particularly a kind of green straw stalk sheet material life
Production method.Belong to building element and decoration technique field.
Background technology
China is grain-production big country, and stalk big producer, can produce more than hundred million tons of stalk every year, account for the whole world
The 20%30% of stalk total amount, wherein, about 5.8 hundred million tons of the cereal crops such as rice, wheat, soybean, corn, potato class stalk, account for stalk
The 89% of total amount；The oil crops stalk such as peanut, rapeseed, sesame, sunflower accounts for the 8% of total amount, and cotton, sugarcane stalk account for total amount
3%, increase the research and development of the comprehensive utilization new technology of agricultural wastes such as stalk, utilize stalk resource scientific and efficiently, taboo
It only crop straw burning, on the one hand can turn waste into wealth, improve resource utilization, improve farmers' income, solve straw utilization and throw in advance
Enter the contradiction with long-term gain, stalk resource advantage is converted into visible economic advantages.On the other hand can be protected with environmental protection
People's health is protected, is the important measure built a resource-conserving and environment-friendly society.Stalk comprehensive utilization is generally fertilizer
Four material, feed, fuel, raw material of industry aspects.In recent years in the case where national policy guides and helps, stalk resource utilization technology
Constantly improve and popularization, the industrialization that fertilizer, feed, edible mushroom base-material, fuel and the raw material of industry are used as in stalk such as utilize at the neck
Domain is comparatively fast developed.It is a collection of to be produced by the raw material of industry of stalk for wood products, commercial generating, straw briquette fuel, straw biogas
The rise of gas, advance the industrialization process of stalk resource comprehensive utilization.
At present, produced by the raw material of industry of stalk for wood products technical field, due to widely used isocyanic acid in production
Ester is as adhesive, although solving the shortcomings that phenolic resin and Lauxite Poor cohesion, isocyanate also can be with metal
Bonding, causes in production there occurs serious haftplatte phenomenon, and releasing agent causes product to be difficult pad pasting, and the cost of raw material is high, and
Extremely toxic substance, threat to life safety can be produced when running into high temperature or fire.
Existing straw board production technology：
Stalk pulverising mill is starched（It is ground into unicellular fibre）Or admixture timber fine powder → drying crushed straw aggregate moisture content（8%~
10%）→ remove dust → uniform glue mixing → mat formation → precompressed → hot-forming → scale cutting edge → health → deburring and surface
Processing → product.Existing process is identical with papermaking preamble technique, is to starch straw grinding, and moisture content is high, and drying work amount is big, energy
Consumption is high, and it is high to prepare cost.
It is fine that the A data of publication of application 2014.02.12 of application publication number CN 103568104 disclose a kind of new rice straw
Tie up sheet material compound method, be by：Rice straw powder 46% -56%；Stone flour 12% -15%；Talcum powder 5% -10%；Oxygen
Change magnesium 25% -33%；Additive (1) 0.2% -0.6%；Additive (2) 0.4% -0.8% forms, described percentage
It is weight percentage.The organic fibrous materials such as described rice straw are crushed, milling；By organic fiber powder, stone flour, talcum powder,
Magnesia stirs mixing；Additive (1), addition are added into organic fiber powder, stone flour, talcum powder, magnesia compound
Agent (2), add water and uniform stirring, mixing；Under conditions of mediation temperature and damping temperature, described mix is loaded
Mould, cold-press moulding, the demoulding；The semi-finished product of the demoulding are subjected to deburring processing by the specification requirement of product；After being stripped at deburring
The semi-finished product of reason, which are fitted into pressurize maintenance mould, to be conserved, you can finished product is put in storage.This method is that rice straw is ground into organic fiber
Powder, its fiber is short, influences the intensity of whole sheet material, in addition, the cohesive force between fiber powder and other materials is limited, influences sheet material
Intensity and toughness.
The content of the invention
To solve drawbacks described above existing for prior art, it is an object of the invention to green straw stalk sheet material producer
Method, board lightweight environmental protection prepared by this method, nonhazardous substance release, high intensity, fire-retardant sound insulation are moistureproof, and sheet material is smooth, texture
It is unified attractive in appearance, it is a kind of cheap, superior performance wooden boards substitute.
To achieve the above object, the technical solution adopted by the present invention：The green straw stalk sheet production method, it is special
Sign is to be prepared according to the following steps：
The method table that the rice straw particle of moisture content 10%~15% is combined to segment → physics of 1 mm~30mm length with chemistry
Face handles → uniform glue mixing → and mated formation → precompressed → hot-forming → scale cutting edge → health → drying → deburring and surface treatment
→ product；
In the surface treatment step, add it is similar to stalk surface wax structure contain silicon-oxygen chemical bond structure it is similar or
Chemical raw material similar in person, specific chemical raw material are：Silicone resin, alkaline oxygenated silicon, silanol ester, more silanol esters, silanol ester
One kind of sodium salt, the sodium salt of more silanol esters or borax, increase its intermolecular affinity, then, add it is a small amount of can be
Hot conditions（More than 90 DEG C）The nano material on lower spot corrosion wax surface, the nano material are nano magnesia microcapsules, received
Rice calcium oxide microcapsules, nano oxidized sodium microcapsules, one kind of nano oxidized potassium microcapsules or alkaline nanometer silica microcapsules
Or it is a variety of, adding can be with the adhesive for forming hydrogen bond or chemical bond of polyhydroxy structure, the adhesive：Melamine
Amine formal, polyvinyl butyral resin, casein, oxidized starch, starch adhesive, gelatine, polyvinyl alcohol, phenolic resin, ring
One kind of oxygen tree fat or polyurethane, increase its affinity, finally, be well mixed, be surface-treated with physical method；
In the hot-forming step, 120 DEG C~220 DEG C of heating-up temperature；Sheet material is dried after health, drying temperature 30
℃-80℃。
Using the beneficial effect of above-mentioned technical proposal：The green straw stalk sheet production method, straw of the invention
Moisture content of straws 10%~15%, it is the moisture content of straws spontaneously dried；And existing straw board production technology crushed straw aggregate contains
Water rate 5%~8% must dry.Process of surface treatment of the present invention is that existing process is entirely different.The wax on stalk surface is main
Composition is the derivative of organosilicon and silica, and surface tension is small, weaker to the affinity of adhesive.Therefore, prior art
The wax coat on stalk surface is often removed or polished hair using the method for machinery rubbing, generally requires to add in this process
Water, if being not added with water, the heat of high-speed friction can make dry stalk dust produce blast.Need to dry after crushing, to apply
Glue.Therefore, stalk crush efficiency is just very low, high energy consumption.The present invention has found that pure physical method can not be complete in process of production
Remove the wax on stalk surface entirely, unless wearing into slurry, the wax that stalk surface could thoroughly be solved by wearing into unicellular particle is asked
Topic.So not only high energy consumption, and need more adhesive dosages, considerably increases cost.In order to overcome disadvantages mentioned above, this
Invention is handled the wax on stalk surface using physics with chemically combined method, is entered from the wax structure on stalk surface
Hand, is firstly added and similar to stalk surface wax structure is specially containing silicon-oxygen chemical key：Silicone resin, alkaline oxygenated silicon,
The structures such as silanol ester, more silanol esters, the sodium salt of silanol ester, the sodium salt of more silanol esters and borax are similar or similar chemical former
Material, increases its intermolecular affinity, then, add it is a small amount of can be in hot conditions（More than 90 DEG C）Lower spot corrosion wax table
The nano material in face, it is specially：Nano magnesia microcapsules, nano calcium oxide microcapsules, nano oxidized sodium microcapsules, nano oxygen
Change a Na of potassium microcapsules or alkaline nanometer silica microcapsules, finally, adding can be with the formation hydrogen bond of polyhydroxy structure
Or the adhesive of chemical bond, it is specially：Melamine formal, polyvinyl butyral resin, casein, oxidized starch, starch
Adhesive, gelatine, polyvinyl alcohol, phenolic resin, one kind of epoxy resin or polyurethane, increase its affinity.The present invention uses
Chemical interface inorganic agent in the case where ensuring that excessive change does not occur for stalk surface texture, with physical method mix
It is even, it is surface-treated.Material cohesive force is strong, and the sheet material of preparation does not ftracture, and intensity is high, is influenceed by ambient temperature and humidity small.This hair
It is bright that sheet material is dried after health, 30 DEG C -80 DEG C of drying temperature.Using the backflow waste heat of heating sheet material, Bu Huizeng
Add and consume excessive heat.
Hot-forming step in present invention process, it is hot pressing with the significantly different place of the past patent of invention of the present inventor
Temperature, originally be cold-press process.According to Industrialized Production Practice, although cold-press process can reduce energy consumption, production effect
Rate is too low, will not produce economic benefit, and therefore, the present invention is adjusted according to industrial practice to production technology.Heating temperature
120 DEG C~220 DEG C of degree, heating eliminate the internal stress of straw fiber, and hot forming is fast, efficiency high, and shaping effect is good, not variable
Shape.
The present invention is as follows based on the sheet material that rice straw is prepared by primary raw material, its advantage：
(1) surface treatment and the compound bond techniques of environmental protection, using the environment-friendly waterproof composite inorganic gelling agent of independent research,
It is surface-treated by Wheat Straw and covers glue formula, is made to bond uniformly in straw board, enhance sheet material resistance to compression, waterproof, ring
Protect
Etc. performance.
(2）Medium temperature continuous mould pressing technology is innovated.The physical characteristic of formula is prepared based on sheet material, by optimizing temperature
Control and continuous mould pressing one-shot forming, avoid haftplatte and the demoulding, timber intensity and yield rate greatly improved, reduce
Energy
Source consumes and production cost.
（3）Product of the present invention is through Chinese Academy of Sciences's acoustic metrology testing station, national constructional ornamental material quality supervision and test
The units such as center detect, and examine project result and are better than national standard.
（4）Product of the present invention is through Middle Line Project For Transferring Water From South To North watershed, Henan Province ecological safety key lab, Nanyang scape
The units such as gloomy Office Furniture Co., Ltd use, and reflection is good, have green, high density, low water swelling, fire resistance
The features such as excellent.
Brief description of the drawings
The specific embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is oise insulation factor curve map at third-octave centre frequency in the range of 100Hz-4kHz；
Fig. 2 is examining report homepage；
Fig. 3 is Form aldehyde release testing result；
Fig. 4 is Checking of static bending intensity data；
Fig. 5 is Checking of static bending intensity result；
Fig. 6 is testing result summary page；
Fig. 7 is that combustibility detects homepage；
Fig. 8 is thickness swelling rate testing result.
Embodiment
A kind of green straw stalk sheet production method, it is characterised in that be prepared according to the following steps：
The method table that the rice straw particle of moisture content 10%~15% is combined to segment → physics of 1 mm~30mm length with chemistry
Face handles → uniform glue mixing → and mated formation → precompressed → hot-forming → scale cutting edge → health → drying → deburring and surface treatment
→ product；
In the surface treatment step, add it is similar to stalk surface wax structure contain silicon-oxygen chemical bond structure it is similar or
Chemical raw material similar in person, it is specially：Silicone resin, alkaline oxygenated silicon, silanol ester, more silanol esters, the sodium salt of silanol ester, more silicon
The sodium salt of alcohol ester or one kind of borax, increase its intermolecular affinity, then, add it is a small amount of can be in hot conditions
（More than 90 DEG C）The nano material on lower spot corrosion wax surface, the nano material are nano magnesia microcapsules, nano calcium oxide
Microcapsules, nano oxidized sodium microcapsules, the one or more of nano oxidized potassium microcapsules or alkaline nanometer silica microcapsules, then
Adding can be with the adhesive for forming hydrogen bond or chemical bond of polyhydroxy structure, the adhesive：Melamine formal,
Polyvinyl butyral resin, casein, oxidized starch, starch adhesive, gelatine, polyvinyl alcohol, phenolic resin, epoxy resin or poly-
One kind of urethane, increase its affinity, finally, be well mixed, be surface-treated with physical method；
In the hot-forming step, 120 DEG C~220 DEG C of heating-up temperature；Sheet material is dried after health, drying temperature 30
℃-80℃。
It is said that below by the bright impact of performance of the invention of testing number.
Product of the present invention as shown in Figure 1 is in oise insulation factor curve map at third-octave centre frequency in the range of 100Hz-4kHz.
Defening effect is good.
As Fig. 2-8 examining reports are shown：Formaldehyde meets Standard, nonhazardous substance release, and high intensity, fire-retardant sound insulation are prevented
Tide.
Claims (2)
1. a kind of green straw stalk sheet production method, it is characterised in that be prepared according to the following steps：
The method table that the rice straw particle of moisture content 10%~15% is combined to segment → physics of 1 mm~30mm length with chemistry
Face handles → uniform glue mixing → and mated formation → precompressed → hot-forming → scale cutting edge → health → drying → deburring and surface treatment
→ product；
In the surface treatment step, add it is similar to stalk surface wax structure contain silicon-oxygen chemical bond structure it is similar or
Chemical raw material similar in person, specific chemical raw material are：Silicone resin, alkaline oxygenated silicon, silanol ester, more silanol esters, silanol ester
One kind of sodium salt, the sodium salt of more silanol esters or borax, increase its intermolecular affinity, then, add it is a small amount of can be
The nano material on spot corrosion wax surface under the conditions of 90 DEG C of temperatures above, the nano material are nano magnesia microcapsules, nanometer
Calcium oxide microcapsules, nano oxidized sodium microcapsules, nano oxidized potassium microcapsules or alkaline nanometer silica microcapsules one kind or
A variety of, adding can be with the adhesive for forming hydrogen bond or chemical bond of polyhydroxy structure, the adhesive：Melamine
Formal, polyvinyl butyral resin, casein, oxidized starch, starch adhesive, gelatine, polyvinyl alcohol, phenolic resin, epoxy
One kind of resin or polyurethane, increase its affinity, finally, be well mixed, be surface-treated with physical method.
2. green straw stalk sheet production method as claimed in claim 1, it is characterised in that：The hot-forming step
In, 120 DEG C~220 DEG C of heating-up temperature；Sheet material is dried after health, 30 DEG C -80 DEG C of drying temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710454888.XA CN107498685A (en) | 2017-06-16 | 2017-06-16 | Green straw stalk sheet production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710454888.XA CN107498685A (en) | 2017-06-16 | 2017-06-16 | Green straw stalk sheet production method |
Publications (1)
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| CN107498685A true CN107498685A (en) | 2017-12-22 |
Family
ID=60679403
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Application publication date: 20171222 |
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