CN108948770A - A kind of method that stalk prepares flame retardant type building board - Google Patents
A kind of method that stalk prepares flame retardant type building board Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2206—Oxides; Hydroxides of metals of calcium, strontium or barium
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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Abstract
The present invention provides a kind of method that stalk prepares flame retardant type building board, crushed straw aggregate is obtained after including the following steps: stalk broken, sorting, dedusting, drying, dipping and wettability treatment are carried out to crushed straw aggregate with inorganic salt solution, obtain stalk wet feed；Obtained stalk wet feed is stirred with inorganic coagulation material and inorganic auxiliary material and is mixed, mixed material is obtained；By obtained mixed material specific dimensions it is framed it is interior uniformly mat formation, carry out compacting sizing after mating formation, remove framed, make that slab solidification forms or room temperature stands maintenance to expected intensity using heat pressing process, obtain finished product plate.The method that stalk of the present invention prepares flame retardant type building board is all made of inorganic coagulation material as bonding agent, and product can achieve contamination-free release, is conducive to protect indoor environment, improves living environment's mass.
Description
Technical field
The invention belongs to building board preparation technical fields, prepare flame retardant type building board more particularly, to a kind of stalk
Method.
Background technique
China is populous large agricultural country, all generates a large amount of agricultural crop straw every year.It is reported according to news media
Statistical data, the stalk quantum of output of China all kinds of crops every year stablizes in 1,000,000,000 tons of scale.Currently, most of crops
The phenomenon that stalk is not yet received effective use, crop straw burning in all parts of the country remains existing despite repeated prohibition, and brings huge pressure to ecological environment.
The forest reserves in China are deficient, and territory afforestation rate is low, requires a large amount of timber of import every year to meet the market demand.Farming
Ingredients, the agricultural crop straw such as cellulose rich in, hemicellulose, lignin, polymerization polysaccharide are reproducible in object stalk
Precious resources, if timber can partially be substituted by being subject to rationally to utilize, it will generate huge economic benefit, the comprehensive benefit of research and development stalk
It is the act benefited the nation and the people that country advocates encouragement with technology.
In recent years, China payes attention to promoting Ecological Civilization Construction, vigorously advocates green building.Meanwhile structural fire protection is pacified
Full requirement is stringenter.Recently national standard " the architectural design newly revised is promulgated by national house and the approval of town and country construction portion
Fire safety rules " in GB50016-2014, many places mandatory term defines the public building facility of special-purpose, and such as hospital is learned
School, nursery and kindergarten, the elderly take care of facility etc., and inside and outside wall thermal insulation material, roofing heat insulating material must use burning
The thermal insulation material that performance is A grades.Combustibility is that A grades of material belongs to incombustible material, and fire risk is low, not will lead to flame
Sprawling can preferably prevent alien invasion and roofing sprawling of the fire by building.It is well known that the agriculture after harvesting under natural conditions
Crop material belongs to inflammable articles, therefore, takes effective technical measures that agricultural crop straw is made to the building slab of flame retardant type
Material, it will construction industry is widely used in agricultural crop straw manufactured goods, realizes that agricultural straw resource plays a key effect.
Summary of the invention
In view of this, the present invention is directed to propose a kind of method that stalk prepares flame retardant type building board, is all made of inorganic glue
For gel material as bonding agent, product can achieve contamination-free release, is conducive to protect indoor environment, improves living environment's matter
Amount.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of method that stalk prepares flame retardant type building board, includes the following steps:
Step 1: pretreatment
Stalk is obtained into crushed straw aggregate after broken, sorting, dedusting, drying, crushed straw aggregate is soaked with inorganic salt solution
Stain and wettability treatment obtain stalk wet feed；
Step 2: it is stirred
The stalk wet feed that step 1 obtains is stirred with inorganic coagulation material and inorganic auxiliary material and is mixed, is mixed
Material；
Step 3: sizing
By mixed material that step 2 obtains specific dimensions it is framed it is interior uniformly mat formation, carry out compacting sizing after mating formation,
It removes framed, makes that slab solidification forms or room temperature stands maintenance to expected intensity using heat pressing process, obtain finished product plate.
Further, it if having higher water-fast moisture-proof requirement to finished product plate, needs to adopt the crushed straw aggregate in step 1
Drying moisture is needed after carrying out dipping and wettability treatment with inorganic salt solution, then carries out cladding processing with high polymer containing halogen again.
Further, inorganic salt solution is dissolved in water for inorganic salts and is formed, and inorganic salts include potassium dihydrogen phosphate, biphosphate
Sodium, diammonium hydrogen phosphate, sodium tripolyphosphate, calgon, condensation of aluminum phosphate, calcium chloride, ammonium chloride, magnesium chloride, zinc chloride, three
One of iron chloride, borax, prodan, sodium sulphate, copper sulphate are a variety of.
Further, inorganic coagulation material include sodium metasilicate colloidal sol (i.e. waterglass), light magnesium oxide, heavy-burned magnesia,
Calcium hydroxide, alpha type high-strength gypsum, beta-type semi-hydrated gypsum are any.
Further, inorganic auxiliary material includes talcum powder (hydrous magnesium silicate), fumed silica powder (white carbon black), ultra-fine two
Silica powder, silicon ash, gibbsite powder (i.e. aluminium hydroxide), metakaolin, wollastonite in powder, flyash, ground blast furnace slag powder,
Mica powder, vermiculite power, sepiolite powder are one or more.
Further, for the particle size range of crushed straw aggregate at 0.05~2.0 millimeter, draw ratio is not more than 3, without soil, without mould
Become, moisture content is lower than 0.2%.This process is conducive to stalk and is mixed with inorganic coagulation material and promote inorganic gel material
Material forms intensity, while being also the important technique measure for making crushed straw aggregate have flame retardant property.
Further, the mass ratio of stalk, inorganic coagulation material, inorganic auxiliary material and inorganic salt solution is 1:0.4~2.5:
0.2~0.7:0.4~1.1, wherein the mass fraction of inorganic salts is 8%~30% in inorganic salt solution.
Further, high polymer containing halogen include polyvinylidene chloride resin, Chlorovinyl-acetate vinyl copolymer resins,
One of PVC paste resin, wherein the mass ratio of high polymer containing halogen and stalk are as follows: 0.1~0.3:1.
Further, bromoprene-styrene copolymerized resin can also be added when coating processing.
The type of stalk includes but is not limited to corn stalk, sorghum stalk, wheat-straw, big beanstalk, Cotton Stalk, tawny daylily hemp stalk, Xiang
The grains such as certain herbaceous plants with big flowers stalk, castor-oil plant stalk, Rape Straw and industrial crops stalk and bagasse, megasse etc. squeeze sugared waste and peanut
The fruits class solid waste such as shell, sunflower seed shell, walnut shell, cocoanut shell.
Sodium metasilicate is commonly called as sodium silicate, is a kind of water-soluble silicate, and aqueous solution is commonly called as waterglass, is a kind of inorganic viscous
Connect agent.Its chemical formula is R2O·nSiO2, R in formula2O is alkali metal oxide, and n is silica and alkali metal oxide mole
Several ratio, the referred to as number that rubs of waterglass.Common waterglass is the aqueous solution (Na of sodium metasilicate in building2O·nSiO2)。
Magnesia is commonly called as magnesia, also referred to as magnesia, and magnesia is basic anhydride, and the general character with basic anhydride belongs to
Cementitious material.White powder (faint yellow is magnesium nitride), it is odorless, tasteless, nontoxic, it is typical alkaline earth oxide, chemistry
Formula MgO.It is divided to light magnesium oxide and two kinds of heavy-burned magnesia according to preparation process firing temperature difference.Light magnesium oxide volume is loose,
For white amorphous powder.Odorless, tasteless is nontoxic.Light magnesium oxide and magnesium chloride brine are cooperated with certain proportion, can be gelled hard
It is melted into the hardenite with certain physical and mechanical property, referred to as magnesia cement.Heavy-burned magnesia and phosphate are by a certain percentage
Cooperation produces high-strength complex salt crystal, referred to as magnesium phosphate cement, and the closure for oil drilling is cemented the well.
Calcium hydroxide is a kind of white powdery solids.Chemical formula Ca (OH)2, it is commonly called as white lime, calcium hydroxide, water is added
It afterwards, is in upper layer and lower layer, upper layer aqueous solution, which is referred to as, clarifies limewash, and lower layer's suspension is referred to as milk of lime or lime white.With alkali
The general character, highly basic in category, it is common construction material, also serves as fungicide and industrial chemicals etc..
Alpha semi-hydrated gypsum is commonly called as high strength gypsum, by dihydrate gypsum under 1.3 atmospheric pressure, under 124 DEG C of saturated steam
Steaming, the alpha semi-hydrated gypsum of generation is levigate obtained land plaster.Formed due to decomposing at elevated pressures, crystal grain compared with
Slightly, specific surface area is smaller, is tuned into the plastic water requirement very little of gypsum slurry, about 35-45%, thus porosity after hardening
Small, (7 days up to 40MPa) and compactness, therefore named high strength gypsum for intensity with higher.Suitable for high-strength plastering engineering, dress
Adorn product and plasterboard.Shrinkage-free binder can be made jointly with organic cementing agent, be suitable for GRG, DIY plastering,
Artwork Ornament production, various precision dies make (shoes mould, ceramics, hardware plastic cement).
Beta-type semi-hydrated gypsum is commonly called as the plaster of paris, by dihydrate gypsum by heating abjection in the dry environment for lacking vapor
The crystallization water generates.It can obviously observe that the microcosmic crystal of beta-type semi-hydrated gypsum contains micropore in loose aggregate under the microscope
The solid of gap.Since beta-type semi-hydrated gypsum particulate fines have biggish specific surface area, therefore aquation is fast, and slurry is convenient for molding, shorter
Very high intensity can be reached in time, be widely used in the industries such as medical treatment, food, building decoration, art sculpture, ceramics.
Consumptive use of water normal consistence is big (> 65%), is exposed in air and is easy the moisture absorption.
Different inorganic coagulation material cementitious materials and the solution of different inorganic salts progress fiting effect are more preferable:
When inorganic coagulation material is heavy-burned magnesia, the pretreatment of stalk uses dihydric phosphate or borax, sulfate；
When light magnesium oxide is inorganic coagulation material, the pretreatment of stalk uses inorganic villaumite；
When using alpha type high-strength gypsum, beta-type semi-hydrated gypsum as inorganic coagulation material, the pretreatment of stalk uses trimerization
Phosphate and hexametaphosphate；
When doing inorganic coagulation material using sodium metasilicate (i.e. waterglass), fluosilicate, condensed phosphate, chlorine can be selected
One of salt, dihydric phosphate, sulfate pre-process crushed straw aggregate after being configured to solution or several total dissolutions.
The matching of inorganic coagulation material and inorganic matter and minerals:
Inorganic matter and minerals: talcum powder (hydrous magnesium silicate), fumed silica powder (white carbon black), superfine silicon dioxide
Powder, silicon ash, gibbsite powder (i.e. aluminium hydroxide), metakaolin, wollastonite in powder, flyash, ground blast furnace slag powder, mica
Powder, vermiculite power, sepiolite powder.Above-mentioned inorganic matter and minerals, though the combination collocation scheme nothing with specific inorganic coagulation material
Disabling limitation, but test result shows that cooperative compensating can be achieved between inorganic coagulation material and inorganic matter and minerals, is formed
Optimize arranging scheme.It is embodied in the following:
When inorganic coagulation material is the sodium metasilicate of strong basicity, fumed silica powder, superfine silicon dioxide powder, silicon are selected
Ash, metakaolin, ground blast furnace slag powder these types auxiliary material, having can react with these auxiliary materials, generate condensation silicic acid
Salt improves adhesion strength and water resistance.
Inorganic coagulation material is light magnesium oxide, uses gibbsite (i.e. aluminium hydroxide) as auxiliary material, helps to prevent chlorine
There is the defect of anti-halogen and surface sweating in oxygen magnesium cement.
Inorganic coagulation material is heavy-burned magnesia, and addition flyash can be effectively prevented slurry and condense too fast, rationally adjusting
Firm time.
When inorganic coagulation material is semi-hydrated gypsum, mica powder, sepiolite powder, vermiculite power etc. are porous, quality is softer auxiliary material
It is added, the compatibility of gypsum and crushed straw aggregate can be improved, keep material mixed distribution more uniform, reduce microcrack, effectively
Reduce the risk that cracking, warpage occurs in plate.
Talcum powder can be used in the present invention in various inorganic coagulation material systems, in the premise of control reasonable volume
Under, the flame retardant effect of crushed straw aggregate can be significantly improved, the oxygen index (OI) of manufactured goods is improved.
Compared with the existing technology, the method that stalk of the present invention prepares flame retardant type building board has the advantage that
The method that stalk of the present invention prepares flame retardant type building board, using agricultural crop straw as raw material, by being crushed,
Satisfactory crushed straw aggregate is made in the pre-treatment steps such as sorting, dedusting, drying, uses inorganic coagulation material and plurality of inorganic salt
And minerals and crushed straw aggregate, it mixes, impregnate, soaking, mixing and stirring, mating formation, precompressed sizing, hot pressing or room temperature stand the techniques such as solidification
Flame retardant type building board finished product is made, product can achieve contamination-free release, be conducive to that indoor environment, raising people is protected to occupy ring
Border quality.
Specific embodiment
In addition to being defined, technical term used in following embodiment has universal with those skilled in the art of the invention
The identical meanings of understanding.Test reagent used in following embodiment is unless otherwise specified conventional biochemical reagent；It is described
Experimental method is unless otherwise specified conventional method.
Below with reference to embodiment, the present invention will be described in detail.
Embodiment 1
A kind of method that stalk prepares flame retardant type building board, includes the following steps:
Step 1: pretreatment
By 100 parts of stalks broken, sorting, dedusting, dry after obtain crushed straw aggregate, with 2.5 parts of calcium chloride, ferric trichloride 4
Part, 6 parts of prodan, 60 parts of preparation inorganic salt solutions of water, inorganic salt solution carries out dipping and wettability treatment to crushed straw aggregate, obtains
To stalk wet feed；
Step 2: it is stirred
Stalk wet feed that step 1 is obtained with 12 parts of superfine silicon dioxide, 800 30 parts of mesh talcum powder, sodium metasilicate (solid
Nt wt net weight) 40 parts be stirred, obtain mixed material；
Step 3: sizing
By mixed material that step 2 obtains specific dimensions it is framed it is interior uniformly mat formation, carry out compacting sizing after mating formation,
It removes framed, makes that slab solidification forms or room temperature stands maintenance to expected intensity using heat pressing process, obtain finished product plate.
Plate bulk density 720Kg/m is surveyed after trimming3, plate oxygen index (OI) 42, combustibility is A (A2) grade.
Embodiment 2
Step 1: pretreatment
By stalk broken, sorting, dedusting, dry after obtain crushed straw aggregate and take 100 parts, with 14 parts of potassium dihydrogen phosphate, boron
2.5 parts of sand, 2 parts of zinc chloride, 50 parts of preparation inorganic salt solutions of water, 68.5 parts of inorganic salt solution are impregnated and are moistened to crushed straw aggregate
Wet process obtains stalk wet feed；
Step 2: it is stirred
Stalk wet feed that step 1 is obtained with 8 parts of flyash, 800 20 parts of mesh talcum powder, 60 parts of heavy-burned magnesia stirrings
Mixing, obtains mixed material；
Step 3: sizing
By mixed material that step 2 obtains specific dimensions it is framed it is interior uniformly mat formation, carry out compacting sizing after mating formation,
It removes framed, makes that slab solidification forms or room temperature stands maintenance to expected intensity using heat pressing process, obtain finished product plate.
It is 940Kg/m that bulk density is surveyed after trimming3, for plate oxygen index (OI) greater than 42, combustibility is A (A2) grade.
Embodiment 3
Step 1: pretreatment
By stalk broken, sorting, dedusting, dry after obtain crushed straw aggregate and take 100 parts, 25 parts of magnesium chloride, calcium chloride 4
Part, 2 parts of ferric trichloride, 12 parts of gibbsite (aluminium hydroxide), 60 parts of preparation inorganic salt solutions of water, 103 parts of inorganic salt solution are right
Crushed straw aggregate carries out dipping and wettability treatment, obtains stalk wet feed；
Step 2: it is stirred
Stalk wet feed that step 1 is obtained with 8 parts of flyash, 800 10 parts of mesh talcum powder, 130 parts of light magnesium oxide plus water
80 parts are modulated into slurry, are stirred, obtain mixed material；
Step 3: sizing
By mixed material that step 2 obtains specific dimensions it is framed it is interior uniformly mat formation, carry out compacting sizing after mating formation,
It removes framed, maintenance is stood to expected intensity using room temperature, obtains finished product plate.
It is 1140Kg/m that actual measurement bulk density, which is actual measurement bulk density, after trimming3, for oxygen index (OI) greater than 42, combustibility is A (A2) grade.
Embodiment 4
Step 1: pretreatment
By stalk broken, sorting, dedusting, dry after obtain crushed straw aggregate and take 100 parts, 4 parts of sodium tripolyphosphate, sodium sulphate
2 parts, 35 parts of water are configured to inorganic salt solution, and 41 parts of inorganic salt solution carry out dipping and wettability treatment to crushed straw aggregate, obtain straw
Stalk wet feed；
Step 2: it is stirred
Stalk wet feed that step 1 is obtained with 3 parts of mica powder, 2 parts of vermiculite power, 220 parts of beta-type semi-hydrated gypsum plus 140 parts of water
It is modulated into slurry, is stirred, mixed material is obtained；
Step 3: sizing
By mixed material that step 2 obtains specific dimensions it is framed it is interior uniformly mat formation, carry out compacting sizing after mating formation,
It removes framed, maintenance is stood to expected intensity using room temperature, obtains finished product plate.
It is 1180Kg/m that actual measurement bulk density, which is actual measurement bulk density, after trimming3, for oxygen index (OI) greater than 42, combustibility is A (A2) grade.
Embodiment 5
Step 1: pretreatment
By stalk broken, sorting, dedusting, dry after obtain crushed straw aggregate and take 100 parts, 3 parts of calcium chloride, potassium dihydrogen phosphate
3 parts, 2 parts of copper sulphate, 4 parts of prodan, 60 parts of water are configured to inorganic salt solution, and 72 parts of inorganic salt solution carry out crushed straw aggregate
Dipping and wettability treatment, obtain stalk wet feed；
Step 2: it is stirred
Stalk wet feed that step 1 is obtained with 6 parts of ground blast furnace slag powder, 2 parts of silicon ash, 800 20 parts of mesh talcum powder, silicon
Sour 60 parts of sodium (solid nt wt net weight), is stirred, obtains mixed material；
Step 3: sizing
By mixed material that step 2 obtains specific dimensions it is framed it is interior uniformly mat formation, carry out compacting sizing after mating formation,
It removes framed, so that slab solidification is formed to expected intensity using heat pressing process, obtain finished product plate.
It is 1070Kg/m that actual measurement bulk density, which is actual measurement bulk density, after trimming3, for oxygen index (OI) greater than 42, combustion rating is A (A2) grade.
Embodiment 6
Step 1: pretreatment
By stalk broken, sorting, dedusting, dry after obtain crushed straw aggregate and take 100 parts, 4 parts of zinc chloride, prodan
3.5 parts, 55 parts of water are configured to inorganic salt solution, and 62.5 parts of inorganic salt solution carry out dipping and wettability treatment to crushed straw aggregate,
Obtain stalk wet feed；
Step 2: it is stirred
Stalk wet feed that step 1 is obtained with 7 parts of superfine silicon dioxide, 1,250 5 parts of mesh talcum powder, (solid is net for sodium metasilicate
Weight) 45 parts, it is stirred, obtains mixed material；
Step 3: sizing
By mixed material that step 2 obtains specific dimensions it is framed it is interior uniformly mat formation, carry out compacting sizing after mating formation,
It removes framed, so that slab solidification is formed to expected intensity using using heat pressing process, obtain finished product plate.
It is 670Kg/m that bulk density is surveyed after trimming3, for oxygen index (OI) greater than 42, combustion rating is A (A2) grade.
Embodiment 7
Step 1: pretreatment
By stalk broken, sorting, dedusting, dry after obtain crushed straw aggregate and take 100 parts, 6 parts of ferric trichloride, biphosphate
2 parts of sodium, 2 parts of zinc chloride, 70 parts of water are configured to inorganic salt solution, and 80 parts of inorganic salt solution are impregnated and moistened to crushed straw aggregate
Wet process obtains stalk wet feed；
Step 2: it is stirred
12 parts of the stalk wet feed and 800 mesh talcum powder that step 1 is obtained, calcium hydroxide milk of lime (is converted to solid to contain only
Amount) 110 parts, it is stirred, obtains mixed material；
Step 3: sizing
By mixed material that step 2 obtains specific dimensions it is framed it is interior uniformly mat formation, carry out compacting sizing after mating formation,
It removes framed, maintenance is stood to expected intensity using room temperature, obtains finished product plate.
It is 1260Kg/m that bulk density is surveyed after trimming3, for oxygen index (OI) greater than 42, combustion rating is A (A2) grade.
Embodiment 8
Step 1: pretreatment
By stalk broken, sorting, dedusting, dry after obtain crushed straw aggregate and take 100 parts, 4 parts of condensation of aluminum phosphate, zinc chloride
2 parts, 50 parts of water are configured to inorganic salt solution, and 56 parts of inorganic salt solution carry out dipping and wettability treatment to crushed straw aggregate, obtain
Stalk wet feed；
Step 2: it is stirred
Stalk wet feed that step 1 is obtained with, 10 parts of sepiolite powder, 800 12 parts of mesh talcum powder, alpha type high-strength gypsum powder
240 parts plus 140 parts of water are modulated into slurry, are stirred, obtain mixed material；
Step 3: sizing
By mixed material that step 2 obtains specific dimensions it is framed it is interior uniformly mat formation, carry out compacting sizing after mating formation,
It removes framed, maintenance is stood to expected intensity using room temperature, obtains finished product plate.
It is 1310Kg/m that bulk density is surveyed after trimming3, for oxygen index (OI) greater than 42, combustion rating is A (A2) grade.
Embodiment 9
Step 1: pretreatment
By stalk broken, sorting, dedusting, dry after obtain crushed straw aggregate and take 100 parts, 4 parts of calgon, calcium chloride
2 parts, 30 parts of water are configured to inorganic salt solution, and 40 parts of inorganic salt solution carry out dipping and wettability treatment to crushed straw aggregate, obtain
Stalk wet feed；
Step 2: resin cladding
The stalk wet feed that step 1 obtains is dried to obtain 106 parts, it is spare.20 parts of PVC paste resin, bromo fourth two
Melt at 1 part of alkene-styrene copolymerized resin, 160 DEG C and be uniformly mixed, by 106 parts of pretreated crushed straw aggregate preheatings of drying
To 160 DEG C, is mixed while hot with the resin of thawing under stirring, be transferred out of mixture, break up cooling, it is spare.
Step 3: it is stirred
127 parts of crushed straw aggregate after the cladding that step 2 is obtained, 15 parts of superfine silicon dioxide powder, 800 mesh talcum powder 20
Part, 75 parts of sodium metasilicate (solid nt wt net weight), is stirred, obtains mixed material by 8 parts of prodan；
Step 4: sizing
By mixed material that step 3 obtains specific dimensions it is framed it is interior uniformly mat formation, carry out compacting sizing after mating formation,
It removes framed, so that slab solidification is formed to expected intensity using hot pressing, obtain finished product plate.
After trimming, actual measurement bulk density is 840Kg/m3, for oxygen index (OI) greater than 42, combustion rating is A (A2) grade.
Embodiment 10
Step 1: pretreatment
By stalk broken, sorting, dedusting, dry after obtain crushed straw aggregate and take 100 parts, 5 parts of sodium tripolyphosphate, borax 4
Part, 40 parts of water are configured to inorganic salt solution, and 49 parts of inorganic salt solution carry out dipping and wettability treatment to crushed straw aggregate, obtain straw
Stalk wet feed；
Step 2: resin cladding
The stalk wet feed drying that step 1 is obtained, obtains 109 parts of pretreated crushed straw aggregate siccatives, spare.It is poly- inclined
40 parts of dichloroethylene lotion (20 parts of amount of solid content), 1 part of bromoprene-styrene copolymerized resin, with aforementioned 109 parts through pre-
It is uniformly mixed under the crushed straw aggregate siccative stirring at normal temperature of processing, obtains 150 parts of stalk wet feeds by cladding processing, dry moisture
It is spare.
Step 4: it is stirred
130 parts of crushed straw aggregate after the cladding that step 2 is obtained, 15 parts of superfine silicon dioxide powder, 800 mesh talcum powder 20
Part, 80 parts of sodium metasilicate (solid nt wt net weight), is stirred, obtains mixed material by 9 parts of prodan；
Step 4: sizing
By mixed material that step 3 obtains specific dimensions it is framed it is interior uniformly mat formation, carry out compacting sizing after mating formation,
It removes framed, so that slab solidification is formed to expected intensity using hot pressing, obtain finished product plate.
After trimming, actual measurement bulk density is 870Kg/m3, for oxygen index (OI) greater than 42, combustion rating is A (A2) grade.
Conclusion:
The method that stalk of the invention prepares flame retardant type building board changes the inflammable attribute of stalk itself, manufactured goods
With good flame retardant property.The regulation inspection of GB/T2406.2 " plastics limiting oxygen index determination burning behavior " according to national standards
It surveys, oxygen index (OI) is greater than 42.The regulation inspection of GB8624-2012 " construction material and classification of combustion properties of building materials and products " according to national standards
It surveys, combustibility has reached A (A2) grade, has been able to satisfy requirement of the state architectural design fire safety rules to material combustion performance.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of method that stalk prepares flame retardant type building board, characterized by the following steps:
Step 1: pretreatment
By stalk broken, sorting, dedusting, it is dry after obtain crushed straw aggregate, with inorganic salt solution to crushed straw aggregate carry out dipping with
Wettability treatment obtains stalk wet feed；
Step 2: it is stirred
The stalk wet feed that step 1 obtains is stirred with inorganic coagulation material and inorganic auxiliary material and is mixed, mixture is obtained
Material；
Step 3: sizing
By mixed material that step 2 obtains specific dimensions it is framed it is interior uniformly mat formation, carry out compacting sizing after mating formation, remove
It is framed, so that slab solidification molding or room temperature is stood maintenance to expected intensity using heat pressing process, obtains finished product plate.
2. the method that stalk according to claim 1 prepares flame retardant type building board, it is characterised in that: if to finished product plate
There is higher water-fast moisture-proof requirement, needs the crushed straw aggregate in step 1 carrying out dipping and wettability treatment using inorganic salt solution
After dry moisture, then carry out cladding processing with high polymer containing halogen again.
3. the method that stalk according to claim 1 prepares flame retardant type building board, it is characterised in that: inorganic salt solution is
Inorganic salts are dissolved in water and are formed, and inorganic salts include potassium dihydrogen phosphate, sodium dihydrogen phosphate, diammonium hydrogen phosphate, sodium tripolyphosphate, six inclined phosphorus
Sour sodium, condensation of aluminum phosphate, calcium chloride, ammonium chloride, magnesium chloride, zinc chloride, ferric trichloride, borax, prodan, sodium sulphate, sulphur
One of sour copper is a variety of.
4. the method that stalk according to claim 1 prepares flame retardant type building board, it is characterised in that: inorganic coagulation material
Including sodium metasilicate colloidal sol (i.e. waterglass), light magnesium oxide, heavy-burned magnesia, calcium hydroxide, alpha type high-strength gypsum, half water stone of β type
Cream is any.
5. the method that stalk according to claim 1 prepares flame retardant type building board, it is characterised in that: inorganic auxiliary material includes
Talcum powder (hydrous magnesium silicate), fumed silica powder (white carbon black), superfine silicon dioxide powder, silicon ash, gibbsite powder (i.e. hydrogen
Aluminium oxide), metakaolin, wollastonite in powder, flyash, ground blast furnace slag powder, mica powder, vermiculite power, sepiolite powder it is a kind of or
It is a variety of.
6. the method that stalk according to claim 1 prepares flame retardant type building board, it is characterised in that: the grain of crushed straw aggregate
For diameter range at 0.05~2.0 millimeter, draw ratio is not more than 3, is free of soil, without mildew, moisture content is lower than 0.2%.
7. the method that stalk according to claim 1 prepares flame retardant type building board, it is characterised in that: stalk, inorganic glue
The mass ratio of gel material, inorganic auxiliary material and inorganic salt solution is 1:0.4~2.5:0.2~0.7:0.4~1.1, wherein inorganic salts
The mass fraction of inorganic salts is 8%~30% in solution.
8. the method that stalk according to claim 2 prepares flame retardant type building board, it is characterised in that: high polymer containing halogen
Including one of polyvinylidene chloride resin, Chlorovinyl-acetate vinyl copolymer resins, PVC paste resin, wherein containing
The mass ratio of halogen high polymer and stalk are as follows: 0.1~0.3:1.
9. the method that stalk according to claim 2 prepares flame retardant type building board, it is characterised in that: when coating processing
Bromoprene-styrene copolymerized resin can also be added.
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| CN112852447B (en) * | 2021-01-07 | 2021-11-26 | 吉林建筑大学 | Fireproof flame-retardant straw composite material and preparation method and application thereof |
| CN112852447A (en) * | 2021-01-07 | 2021-05-28 | 吉林建筑大学 | Fireproof flame-retardant straw composite material and preparation method and application thereof |
| CN114833912A (en) * | 2022-04-06 | 2022-08-02 | 千年舟新材科技集团股份有限公司 | Straw composite board and manufacturing method thereof |
| CN114833912B (en) * | 2022-04-06 | 2024-01-26 | 千年舟新材科技集团股份有限公司 | Straw composite board and manufacturing method thereof |
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Application publication date: 20181207 |