CN108892461A - A method of it adding straw fibers and prepares light heat-insulation wall material - Google Patents

A method of it adding straw fibers and prepares light heat-insulation wall material Download PDF

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Publication number
CN108892461A
CN108892461A CN201810768683.3A CN201810768683A CN108892461A CN 108892461 A CN108892461 A CN 108892461A CN 201810768683 A CN201810768683 A CN 201810768683A CN 108892461 A CN108892461 A CN 108892461A
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China
Prior art keywords
straw
added
parts
wall material
fibre
Prior art date
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Pending
Application number
CN201810768683.3A
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Chinese (zh)
Inventor
胡万伟
孙连军
郭胡健
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Anhui Province Shen Zhou Building Materials Science And Technology Ltd
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Anhui Province Shen Zhou Building Materials Science And Technology Ltd
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Priority to CN201810768683.3A priority Critical patent/CN108892461A/en
Publication of CN108892461A publication Critical patent/CN108892461A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B14/00Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/38Fibrous materials; Whiskers
    • C04B14/46Rock wool ; Ceramic or silicate fibres
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B16/00Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B16/04Macromolecular compounds
    • C04B16/06Macromolecular compounds fibrous
    • C04B16/0675Macromolecular compounds fibrous from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B16/0691Polyamides; Polyaramides
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04Waste materials; Refuse
    • C04B18/18Waste materials; Refuse organic
    • C04B18/24Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02Treatment
    • C04B20/023Chemical treatment
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/40Porous or lightweight materials
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

The invention discloses a kind of methods that admixture straw fibers prepare light heat-insulation wall material, gypsum and filler, pretreatment composite fibre are mixed, gained mixture is put into ball grinder, it is taken out after ball milling on ball mill, it is dry to stir, water is added by the ratio of mud, is uniformly mixed, n-octyl alcohol is added to stir evenly, gypsum slurry is made;After mixing evenly by cement, slag micropowder, it is added in gained gypsum slurry, the cement slurry that must be uniformly mixed after stirring, active fine aggregate is added thereto, light mortar is obtained after stirring, adds granular polystyrene, straw fibers light wall material is obtained after stirring.Rice-straw fibre particle is spiked into cement slurry, light wall material is prepared;Rice-straw fibre particle improves the brittleness of cement base, its impact strength is made to get a promotion, and composite material exhibits go out superior sound insulation property, is a kind of ideal earthquake-resistant structure material.It uses ceramics, nylon composite fibre for reinforcement, has been obviously improved the thermal shock resistance of materials for wall.

Description

A method of it adding straw fibers and prepares light heat-insulation wall material
Technical field
The invention belongs to materials for wall technical fields, and in particular to a kind of admixture straw fibers prepare insulating light wall The method of body material.
Background technique
Although China's stalk resource is abundant, but still has many problems in terms of stalk comprehensive utilization, a side
Face arbitrarily abandons and also happens occasionally without control burning problem in some places, direct crop straw burning, not only seriously
It pollutes environment and is the significant wastage to the energy, resource.Although crop straw burning phenomenon oneself cause the height of Government departments Degree is paid attention to, and takes a series of measure thus, achieves significant effect, but for straw resource utilization, The problem of being wasted there is also stalk resource.On the other hand, also to take without processing directly even if stalk is utilized as resource more Connect traditional application mode for fertilizer, fuel and feed.These all constrain straw utilization rate, conversion ratio and economic benefit It further increases.
Rice-straw fibre micro-fine cement sill is after being machined discarded rice straw, to be added to by a certain percentage Complex cement sill obtained in cement.Compared to traditional building material, the raw material of the complex cement sill are widely distributed, Composite material that is cheap, being easy to produce, and obtain has many advantages, such as superior performance, energy conservation and environmental protection, it is green and healthy can There is quite wide utilization prospect under the background of sustainable development.
Summary of the invention
The purpose of the present invention is being directed to existing problem, provides a kind of admixture straw fibers and prepare insulating light wall The method of body material has excellent thermal insulation property, sound insulation anti-seismic performance, anti-thermal shock according to the materials for wall of this method production Property.
The present invention is achieved by the following technical solutions:
A method of it adding straw fibers and prepares light heat-insulation wall material, which is characterized in that include the following steps:
(1)The production of powdered rice-straw fibre:
10-15 parts of straw straw dryings are handled, is tentatively crushed with stalk crasher, obtains the filament shape rice of 10-30mm long Grass fiber removes impurity, then filamentary fibers is continued to be crushed to 20-80 mesh microgranular;
(2)Composite fibre gypsum slurry:
35-40 parts of gypsum and filler, 0.5-1 parts of pretreatment composite fibres are mixed, gained mixture is put into ball grinder, It is taken out after ball milling 1-2h on ball mill, it is dry to stir 2-3min, water is added by ratio of mud 0.45-0.53, is uniformly mixed, 0.05-1 is added Part n-octyl alcohol, stirs evenly, and gypsum slurry is made;
(3)The preparation of straw fibers light wall material:
After mixing evenly by 5-10 parts of cement, 50-60 parts of slag micropowders, it is added to(2)In middle gained gypsum slurry, 15- is stirred Active fine aggregate is added in the cement slurry that must be uniformly mixed after 20min thereto, stirs after 10-15min to obtain light mortar, then plus Enter 5-10 parts of granular polystyrenes, obtains straw fibers light wall material after stirring 15-20min.
Further, step(2)Middle filler is made of 15-20 parts of silica flours, 8-10 parts of talcum powder, 25-30 parts of bauxites.
Further, step(2)The surface treatment and dispersion of middle composite fibre:First matched with silane coupling agent, alcohol and water At coupling agent alcoholic solution, coupling agent alcoholic solution is added into composite fibre, stirs 5-10min, a small amount of acetum is added, makes molten Liquid improves its hydrolysis rate in acid, filters after impregnating 20-25min, then cleaned with aqueous acetone solution, is put into drying box and does It is dry, obtain pretreatment composite fibre;
Composite fibre is formed by mass mixings such as ceramic fibre and nylon fibers.
Further, step(3)Middle activity fine aggregate is 1 step of power(1)The middle powdered rice-straw fibre of gained, uses water logging It is wet.
The present invention has the following advantages that compared with prior art:
(1)Discarded rice straw is subjected to machining, rice-straw fibre particle is made, is spiked into cement slurry, prepare lightweight wall Material;Rice-straw fibre particle improves the brittleness of cement base, so that its impact strength is got a promotion, composite material exhibits are superior out Sound insulation property, be a kind of ideal earthquake-resistant structure material.
(2)It uses ceramics, nylon composite fibre for reinforcement, composite fibre is added to land plaster by way of ball milling In material, and dispersed, raw embryo bending strength is big;The dispersing mode of fiber is first by fiber and the mixing of gypsum mixed powder, then ball The regular hour is ground, fiber is made to be uniformly dispersed;It has been obviously improved the thermal shock resistance of materials for wall.
(3)Using gypsum and slag micropowder as primary raw material, using cement as alkali-activator, green glue of good performance is made Gel material-gypsum slag cement;Based on this cementitious material, agricultural waste material straw powder is added, Gypsum Mine pulp water is made Mud-stalk light mortar adds granular polystyrene to mitigate the bulk density of mortar specimen, gypsum slag cement-stalk light is made Materials for wall can be used as light heat-insulation wall material.
Specific embodiment
Embodiment 1
A method of it adding straw fibers and prepares light heat-insulation wall material, which is characterized in that include the following steps:
(1)The production of powdered rice-straw fibre:
10 parts of straw straw dryings are handled, is tentatively crushed with stalk crasher, obtains the filament shape rice-straw fibre of 10mm long, Impurity is removed, then filamentary fibers are continued to be crushed to 20 mesh microgranular;
(2)Composite fibre gypsum slurry:
35 parts of gypsum and filler, 0.5 part of pretreatment composite fibre are mixed, gained mixture are put into ball grinder, in ball milling It is taken out after ball milling 1h on machine, it is dry to stir 2min, water is added by the ratio of mud 0.45, is uniformly mixed, 0.05 part of n-octyl alcohol is added, stirring is equal It is even, gypsum slurry is made;
(3)The preparation of straw fibers light wall material:
After mixing evenly by 5 parts of cement, 50 parts of slag micropowders, it is added to(2)In middle gained gypsum slurry, obtained after stirring 15min Active fine aggregate is added in uniformly mixed cement slurry thereto, obtains light mortar after stirring 10min, adds 5 parts of polyphenyl Grain obtains straw fibers light wall material after stirring 15min.
Further, step(2)Middle filler is made of 15 parts of silica flours, 8 parts of talcum powder, 25 parts of bauxites.
Further, step(2)The surface treatment and dispersion of middle composite fibre:First matched with silane coupling agent, alcohol and water At coupling agent alcoholic solution, coupling agent alcoholic solution is added into composite fibre, stirs 5min, a small amount of acetum is added, makes solution Its hydrolysis rate is improved in acidity, is filtered after impregnating 20min, then cleaned with aqueous acetone solution, drying in drying box is put into, obtains Pre-process composite fibre;
Composite fibre is formed by mass mixings such as ceramic fibre and nylon fibers.
Further, step(3)Middle activity fine aggregate is 1 step of power(1)The middle powdered rice-straw fibre of gained, uses water logging It is wet.
Embodiment 2
A method of it adding straw fibers and prepares light heat-insulation wall material, which is characterized in that include the following steps:
(1)The production of powdered rice-straw fibre:
15 parts of straw straw dryings are handled, is tentatively crushed with stalk crasher, obtains the filament shape rice-straw fibre of 30mm long, Impurity is removed, then filamentary fibers are continued to be crushed to 80 mesh microgranular;
(2)Composite fibre gypsum slurry:
40 parts of gypsum and filler, 1 part of pretreatment composite fibre are mixed, gained mixture are put into ball grinder, in ball mill It is taken out after upper ball milling 2h, it is dry to stir 3min, water is added by the ratio of mud 0.53, is uniformly mixed, 1 part of n-octyl alcohol is added, stirs evenly, makes Obtain gypsum slurry;
(3)The preparation of straw fibers light wall material:
After mixing evenly by 10 parts of cement, 60 parts of slag micropowders, it is added to(2)In middle gained gypsum slurry, obtained after stirring 20min Active fine aggregate is added in uniformly mixed cement slurry thereto, obtains light mortar after stirring 15min, adds 10 parts of polyphenyl Grain obtains straw fibers light wall material after stirring 20min.
Further, step(2)Middle filler is made of 20 parts of silica flours, 10 parts of talcum powder, 30 parts of bauxites.
Further, step(2)The surface treatment and dispersion of middle composite fibre:First matched with silane coupling agent, alcohol and water At coupling agent alcoholic solution, coupling agent alcoholic solution is added into composite fibre, stirs 10min, a small amount of acetum is added, makes solution Its hydrolysis rate is improved in acidity, is filtered after impregnating 25min, then cleaned with aqueous acetone solution, drying in drying box is put into, obtains Pre-process composite fibre;
Composite fibre is formed by mass mixings such as ceramic fibre and nylon fibers.
Further, step(3)Middle activity fine aggregate is 1 step of power(1)The middle powdered rice-straw fibre of gained, uses water logging It is wet.
According to the method for the present invention production light heat-insulation wall material have excellent thermal insulation property, sound insulation anti-seismic performance, Thermal shock resistance.

Claims (4)

1. a kind of method for adding straw fibers and preparing light heat-insulation wall material, which is characterized in that include the following steps:
(1)The production of powdered rice-straw fibre:
10-15 parts of straw straw dryings are handled, is tentatively crushed with stalk crasher, obtains the filament shape rice of 10-30mm long Grass fiber removes impurity, then filamentary fibers is continued to be crushed to 20-80 mesh microgranular;
(2)Composite fibre gypsum slurry:
35-40 parts of gypsum and filler, 0.5-1 parts of pretreatment composite fibres are mixed, gained mixture is put into ball grinder, It is taken out after ball milling 1-2h on ball mill, it is dry to stir 2-3min, water is added by ratio of mud 0.45-0.53, is uniformly mixed, 0.05-1 is added Part n-octyl alcohol, stirs evenly, and gypsum slurry is made;
(3)The preparation of straw fibers light wall material:
After mixing evenly by 5-10 parts of cement, 50-60 parts of slag micropowders, it is added to(2)In middle gained gypsum slurry, 15- is stirred Active fine aggregate is added in the cement slurry that must be uniformly mixed after 20min thereto, stirs after 10-15min to obtain light mortar, then plus Enter 5-10 parts of granular polystyrenes, obtains straw fibers light wall material after stirring 15-20min.
2. a kind of method for adding straw fibers and preparing light heat-insulation wall material according to claim 1, special Sign is, step(2)Middle filler is made of 15-20 parts of silica flours, 8-10 parts of talcum powder, 25-30 parts of bauxites.
3. a kind of method for adding straw fibers and preparing light heat-insulation wall material according to claim 1, special Sign is, step(2)The surface treatment and dispersion of middle composite fibre:
It first is made into coupling agent alcoholic solution with silane coupling agent, alcohol and water, coupling agent alcoholic solution, stirring are added into composite fibre A small amount of acetum is added in 5-10min, so that solution is improved its hydrolysis rate in acid, filters after impregnating 20-25min, then with third Ketone aqueous cleaning is put into drying in drying box, obtains pretreatment composite fibre;
Composite fibre is formed by mass mixings such as ceramic fibre and nylon fibers.
4. a kind of method for adding straw fibers and preparing light heat-insulation wall material according to claim 1, special Sign is, step(3)Middle activity fine aggregate is 1 step of power(1)The middle powdered rice-straw fibre of gained, uses water-soaked.
CN201810768683.3A 2018-07-13 2018-07-13 A method of it adding straw fibers and prepares light heat-insulation wall material Pending CN108892461A (en)

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CN201810768683.3A CN108892461A (en) 2018-07-13 2018-07-13 A method of it adding straw fibers and prepares light heat-insulation wall material

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114195453A (en) * 2021-12-16 2022-03-18 南通市泳宇新型建材有限公司 Energy-saving building wall material and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105693180A (en) * 2014-11-27 2016-06-22 重庆房地产职业学院 Gypsum based EPS composite thermal insulation wall material
CN107344843A (en) * 2017-07-19 2017-11-14 合肥广民建材有限公司 A kind of ardealite base wall insulated board and its preparation technology
CN107745077A (en) * 2017-09-29 2018-03-02 西安交通大学 Core shell one gypsum mold molding methods based on photocureable rapid shaping
CN108145084A (en) * 2017-12-23 2018-06-12 安徽鑫宏机械有限公司 A kind of combined type plaster inner core investment shell casting technique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105693180A (en) * 2014-11-27 2016-06-22 重庆房地产职业学院 Gypsum based EPS composite thermal insulation wall material
CN107344843A (en) * 2017-07-19 2017-11-14 合肥广民建材有限公司 A kind of ardealite base wall insulated board and its preparation technology
CN107745077A (en) * 2017-09-29 2018-03-02 西安交通大学 Core shell one gypsum mold molding methods based on photocureable rapid shaping
CN108145084A (en) * 2017-12-23 2018-06-12 安徽鑫宏机械有限公司 A kind of combined type plaster inner core investment shell casting technique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
郭振华: ""复合纤维含量对其在石膏浆料中的分散性及石膏型性能的影响"", 《中国优秀硕士学位论文全文数据库工程科技I辑》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114195453A (en) * 2021-12-16 2022-03-18 南通市泳宇新型建材有限公司 Energy-saving building wall material and preparation method thereof

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Application publication date: 20181127

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