CN106116294A - A kind of preparation method of energy-saving heat-insulating composite construction material - Google Patents

A kind of preparation method of energy-saving heat-insulating composite construction material Download PDF

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Publication number
CN106116294A
CN106116294A CN201610469788.XA CN201610469788A CN106116294A CN 106116294 A CN106116294 A CN 106116294A CN 201610469788 A CN201610469788 A CN 201610469788A CN 106116294 A CN106116294 A CN 106116294A
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China
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energy
insulating composite
saving heat
composite construction
construction material
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CN201610469788.XA
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周荣
王龙
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周荣
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Priority to CN201610469788.XA priority Critical patent/CN106116294A/en
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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

Abstract

The present invention relates to the preparation method of a kind of energy-saving heat-insulating composite construction material, belong to building material technical field.Have that anti-pressure ability is weak for system straw building materials, Yi Chao, the problem that perishable, fire protecting performance is poor, the invention provides the preparation method of a kind of energy-saving heat-insulating composite construction material, the present invention uses Kaolin to be main material, through high-temperature calcination, surface hydroxyl is taken off, thus obtain special physicochemical property, and activate in the alkaline solution of waterglass, improve Kaolin activity further, it is blended with through silane coupler modified rice straw again, mould tamping molding is injected after stirring, maintenance in climatic chamber after form removal, obtains energy-saving heat-insulating composite construction material.Energy-saving heat-insulating composite construction material intensity prepared by the present invention is high, good corrosion resistance, good effect of heat insulation.

Description

A kind of preparation method of energy-saving heat-insulating composite construction material
Technical field
The present invention relates to the preparation method of a kind of energy-saving heat-insulating composite construction material, belong to building material technical field.
Background technology
Architectural energy consumption, currently as China three one of power consumption family greatly, occupies critical positions in energy resource consumption total amount.Building The energy-conservation a kind of main path becoming China's energy-saving and emission-reduction.Soil polyalcohol is that a kind of green grown up in recent years is built Material.The production of soil polymers can reduce the CO of about 50%~80% relative to portland cement2Discharge, and soil polymers is in production process The dust of middle discharge, SO2, the pollutant such as NO be greatly reduced relative to cement production process, this is for China's energy-saving and emission-reduction and ring Environment pollution has the most great meaning.
Geology polymer material is to study one of very active material the most in the world.It is by active silica-alumina class thing Matter (such as metakaolin, flyash etc.) at low temperatures through alkali-activated carbonatite reaction generate to have the one similar to ceramic performance novel Binder Materials.It has the premium properties such as intensity height, quick solidifying, high temperature resistant, durability strong, good heat-insulation effect, and raw material sources Extensively, cheap, energy consumption is low, is low cost, high-performance environment-friendly shaped material.On the other hand, straw building materials are as insulation material also Receive extensive concern.Energy-saving and emission-reduction to straw base building thermal insulation material are analyzed, and find that straw is for building heat preservation May be up to 51MJ/ (kg a) Heating Period is energy-conservation.In the case of reaching identical heat insulation effect, in straw base Material Manufacturing Process Total energy consumption and CO2Discharge capacity is below polystyrene foam heat insulation material, has fabulous effects of energy saving and emission reduction.Because straw has Having the feature of lightweight, insulation, China's stalk resource is the abundantest in addition, is used as construction material and is always the master of straw Want one of utilization ways.But there is the defects such as anti-pressure ability is weak, Yi Chao, perishable, fire protecting performance is poor in tradition straw building materials, makes Its range of application is restricted.If geo-polymer and straw can be combined, make a kind of novel light heat-insulating construction material, both Can utilize the excellent properties of geo-polymer, again can Appropriate application stalk resource, have again good thermal insulation property concurrently simultaneously, break through The application limitation of tradition straw building materials, makes the heat-insulating construction material of Mobyneb, and this realizes sustainable development to China Have great significance with energy-saving and emission-reduction.
Summary of the invention
The technical problem to be solved: have that anti-pressure ability is weak for system straw building materials, Yi Chao, perishable, anti- The problem of fire poor performance, the invention provides the preparation method of a kind of energy-saving heat-insulating composite construction material, and the present invention uses kaolinite Soil is main material, through high-temperature calcination, surface hydroxyl is taken off, thus obtains special physicochemical property, and at the alkaline solution of waterglass Middle activation, improves Kaolin activity further, then is blended with through silane coupler modified rice straw, inject after stirring Mould tamping molding, maintenance in climatic chamber after form removal, obtain energy-saving heat-insulating composite construction material.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
(1) weighing 50 ~ 60g rice straw and add pulverizer pulverizing, cross 60 mesh sieves, the rice straw powder after sieving puts into steamer Middle steaming and decocting 20 ~ 30min, proceeds to be dried in 70 ~ 75 DEG C of baking ovens 1 ~ 2h, takes out rice straw powder, and with volume fraction be 0.3 ~ 0.5% silane coupler KH560 soaks, and heats 1 ~ 2h, filter, filtering residue is placed in 70 ~ 75 DEG C in 80 ~ 85 DEG C of constant water bath box Baking oven is dried 1 ~ 2h, obtains pretreated straw powder, standby;
(2) weighing 130 ~ 135g rice hull ash, adding 325 ~ 335mL mass concentration is in 25% sodium hydroxide solution, at 95 ~ 100 DEG C Under water bath with thermostatic control, stirring 3 ~ 4h with 300 ~ 400r/min, filter, remove precipitation, obtain waterglass mixed liquor, adding mass concentration is 25% sodium hydroxide solution regulation modulus of water glass is 1.0 ~ 1.2, obtains alkali-activator;
(3) weigh 200 ~ 300g Kaolin, add in calcining furnace, at 800 ~ 820 DEG C, calcine 2 ~ 3h, obtain metakaolin, weigh 166 ~ 168g metakaolin, adds in above-mentioned alkali-activator, stands 30 ~ 40min, adds 15 ~ 16g above-mentioned steps (1) and prepares Pretreated straw powder inject in mould in after the slurry of good fluidity with 60 ~ 100r/min stirring, consolidate molding, room Gentle and quiet put form removal after 22 ~ 24h, maintenance 28 ~ 30 days in relative humidity is 70 ~ 75% climatic chambers, obtain energy-saving heat-insulating composite and build Build material.
The application process of the present invention is: it is heat insulation that the energy-saving heat-insulating composite construction material present invention prepared is made as wall Layer, fluctuations in indoor temperature rate declines 20 ~ 30%.
The method have the benefit that:
(1) the energy-saving heat-insulating composite construction material intensity that prepared by the present invention is high, good corrosion resistance, good effect of heat insulation;
(2) preparation process of the present invention is simple, safety, environmental protection.
Detailed description of the invention
Weighing 50 ~ 60g rice straw and add pulverizer pulverizing, cross 60 mesh sieves, the rice straw powder after sieving puts into steaming Steaming and decocting 20 ~ 30min in Guo, proceeds to be dried in 70 ~ 75 DEG C of baking ovens 1 ~ 2h, takes out rice straw powder, and with volume fraction be 0.3 ~ 0.5% silane coupler KH560 soaks, and heats 1 ~ 2h, filter, filtering residue is placed in 70 ~ 75 DEG C in 80 ~ 85 DEG C of constant water bath box Baking oven is dried 1 ~ 2h, obtains pretreated straw powder, standby;Weighing 130 ~ 135g rice hull ash, adding 325 ~ 335mL mass concentration is In 25% sodium hydroxide solution, under 95 ~ 100 DEG C of waters bath with thermostatic control, stir 3 ~ 4h with 300 ~ 400r/min, filter, remove precipitation, Waterglass mixed liquor, add mass concentration be 25% sodium hydroxide solution regulation modulus of water glass be 1.0 ~ 1.2, obtain alkaline swash Send out agent;Weigh 200 ~ 300g Kaolin, add in calcining furnace, at 800 ~ 820 DEG C, calcine 2 ~ 3h, obtain metakaolin, weigh 166 ~ 168g metakaolin, adds in above-mentioned alkali-activator, stands 30 ~ 40min, and prepared by addition 15 ~ 16g above-mentioned steps (1) pre- Processing powder of straw with 60 ~ 100r/min stirring in injecting in mould after the slurry of good fluidity, consolidate molding, room temperature is quiet Put form removal after 22 ~ 24h, maintenance 28 ~ 30 days in relative humidity is 70 ~ 75% climatic chambers, obtain energy-saving heat-insulating composite Building wood Material.
Example 1
Weighing 50g rice straw and add pulverizer pulverizing, cross 60 mesh sieves, the rice straw powder after sieving puts into steaming and decocting in steamer 20min, proceeds to be dried in 70 DEG C of baking ovens 1h, takes out rice straw powder, and is 0.3% silane coupler KH560 leaching by volume fraction Bubble, heats 1h in 80 DEG C of constant water bath box, filters, be placed in by filtering residue in 70 DEG C of baking ovens and be dried 1h, obtain pretreated straw powder, standby With;Weighing 130g rice hull ash, adding 325mL mass concentration is in 25% sodium hydroxide solution, under 95 DEG C of waters bath with thermostatic control, with 300r/min stirs 3h, filters, and removes precipitation, obtains waterglass mixed liquor, and adding mass concentration is 25% sodium hydroxide solution regulation Modulus of water glass is 1.0, obtains alkali-activator;Weigh 200g Kaolin, add in calcining furnace, at 800 DEG C, calcine 2h, obtain partially Kaolin, weighs 166g metakaolin, adds in above-mentioned alkali-activator, stands 30min, adds 15g above-mentioned steps (1) and prepares Pretreated straw powder inject in mould in after the slurry of good fluidity with 60r/min stirring, consolidate molding, room temperature is quiet Put form removal after 22h, maintenance 28 days in relative humidity is 70% climatic chamber, obtain energy-saving heat-insulating composite construction material.
The application process of the present invention is: it is heat insulation that the energy-saving heat-insulating composite construction material present invention prepared is made as wall Layer, fluctuations in indoor temperature rate declines 20%.
Example 2
Weighing 55g rice straw and add pulverizer pulverizing, cross 60 mesh sieves, the rice straw powder after sieving puts into steaming and decocting in steamer 25min, proceeds to be dried in 72 DEG C of baking ovens 1.5h, takes out rice straw powder, and be 0.4% silane coupler KH560 by volume fraction Soak, 82 DEG C of constant water bath box heat 1.5h, filters, filtering residue is placed in 72 DEG C of baking ovens and is dried 1.5h, obtain pretreatment straw Stalk powder, standby;Weighing 132g rice hull ash, adding 330mL mass concentration is in 25% sodium hydroxide solution, 98 DEG C of waters bath with thermostatic control Under, stir 3.5h with 350r/min, filter, remove precipitation, obtain waterglass mixed liquor, adding mass concentration is 25% sodium hydroxide Solution regulation modulus of water glass is 1.1, obtains alkali-activator;Weigh 250g Kaolin, add in calcining furnace, forge at 810 DEG C Burn 2.5h, obtain metakaolin, weigh 167g metakaolin, add in above-mentioned alkali-activator, stand 35min, add on 15.5g State pretreated straw powder prepared by step (1) to inject in mould in after the slurry of good fluidity with 80r/min stirring, smash Real molding, room temperature stands form removal after 23h, maintenance 29 days in relative humidity is 72% climatic chamber, obtains energy-saving heat-insulating composite and build Build material.
The application process of the present invention is: it is heat insulation that the energy-saving heat-insulating composite construction material present invention prepared is made as wall Layer, fluctuations in indoor temperature rate declines 25%.
Example 3
Weighing 60g rice straw and add pulverizer pulverizing, cross 60 mesh sieves, the rice straw powder after sieving puts into steaming and decocting in steamer 30min, proceeds to be dried in 75 DEG C of baking ovens 2h, takes out rice straw powder, and is 0.5% silane coupler KH560 leaching by volume fraction Bubble, heats 2h in 85 DEG C of constant water bath box, filters, be placed in by filtering residue in 75 DEG C of baking ovens and be dried 2h, obtain pretreated straw powder, standby With;Weighing 135g rice hull ash, adding 335mL mass concentration is in 25% sodium hydroxide solution, under 100 DEG C of waters bath with thermostatic control, with 400r/min stirs 4h, filters, and removes precipitation, obtains waterglass mixed liquor, and adding mass concentration is 25% sodium hydroxide solution regulation Modulus of water glass is 1.2, obtains alkali-activator;Weigh 300g Kaolin, add in calcining furnace, at 820 DEG C, calcine 3h, obtain partially Kaolin, weighs 168g metakaolin, adds in above-mentioned alkali-activator, stands 40min, adds 16g above-mentioned steps (1) and prepares Pretreated straw powder inject in mould in after the slurry of good fluidity with 100r/min stirring, consolidate molding, room temperature Stand form removal after 24h, maintenance 30 days in relative humidity is 75% climatic chamber, obtain energy-saving heat-insulating composite construction material.
The application process of the present invention is: it is heat insulation that the energy-saving heat-insulating composite construction material present invention prepared is made as wall Layer, fluctuations in indoor temperature rate declines 30%.

Claims (1)

1. the preparation method of an energy-saving heat-insulating composite construction material, it is characterised in that concrete preparation process is:
(1) weighing 50 ~ 60g rice straw and add pulverizer pulverizing, cross 60 mesh sieves, the rice straw powder after sieving puts into steamer Middle steaming and decocting 20 ~ 30min, proceeds to be dried in 70 ~ 75 DEG C of baking ovens 1 ~ 2h, takes out rice straw powder, and with volume fraction be 0.3 ~ 0.5% silane coupler KH560 soaks, and heats 1 ~ 2h, filter, filtering residue is placed in 70 ~ 75 DEG C in 80 ~ 85 DEG C of constant water bath box Baking oven is dried 1 ~ 2h, obtains pretreated straw powder, standby;
(2) weighing 130 ~ 135g rice hull ash, adding 325 ~ 335mL mass concentration is in 25% sodium hydroxide solution, at 95 ~ 100 DEG C Under water bath with thermostatic control, stirring 3 ~ 4h with 300 ~ 400r/min, filter, remove precipitation, obtain waterglass mixed liquor, adding mass concentration is 25% sodium hydroxide solution regulation modulus of water glass is 1.0 ~ 1.2, obtains alkali-activator;
(3) weigh 200 ~ 300g Kaolin, add in calcining furnace, at 800 ~ 820 DEG C, calcine 2 ~ 3h, obtain metakaolin, weigh 166 ~ 168g metakaolin, adds in above-mentioned alkali-activator, stands 30 ~ 40min, adds 15 ~ 16g above-mentioned steps (1) and prepares Pretreated straw powder inject in mould in after the slurry of good fluidity with 60 ~ 100r/min stirring, consolidate molding, room Gentle and quiet put form removal after 22 ~ 24h, maintenance 28 ~ 30 days in relative humidity is 70 ~ 75% climatic chambers, obtain energy-saving heat-insulating composite and build Build material.
CN201610469788.XA 2016-06-26 2016-06-26 A kind of preparation method of energy-saving heat-insulating composite construction material Pending CN106116294A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107555870A (en) * 2017-08-31 2018-01-09 广西师范学院 Geo-polymer base rice straw fiberboard and preparation method 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

Citations (5)

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Publication number Priority date Publication date Assignee Title
CN1032429A (en) * 1987-07-28 1989-04-19 埃维罗加德股份有限公司 Produce soluble silicate by bio-silicon dioxide
DE10129873C1 (en) * 2001-06-21 2002-10-24 Iff Weimar Light building material used in the production of molded bodies for walls, ceilings and roofs consists of plant or mineral additives, and activated aluminosilicate compounds in the form of a reactive mixture
CN101456555A (en) * 2008-09-04 2009-06-17 南昌大学 Method for preparing high mode number waterglass and active carbon by rice hull ash
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DE10129873C1 (en) * 2001-06-21 2002-10-24 Iff Weimar Light building material used in the production of molded bodies for walls, ceilings and roofs consists of plant or mineral additives, and activated aluminosilicate compounds in the form of a reactive mixture
CN101456555A (en) * 2008-09-04 2009-06-17 南昌大学 Method for preparing high mode number waterglass and active carbon by rice hull ash
CN104108903A (en) * 2014-06-18 2014-10-22 东南大学 Corn straw fiber enhanced fly ash polymer gel material and preparation method thereof
CN104526831A (en) * 2014-12-19 2015-04-22 江南大学 Straw plate and preparing method thereof

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靳璇等: "《秸秆预处理工艺对秸秆基人造板性能的影响》", 《应用化学》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107555870A (en) * 2017-08-31 2018-01-09 广西师范学院 Geo-polymer base rice straw fiberboard and preparation method thereof
CN107555870B (en) * 2017-08-31 2020-09-11 广西师范学院 Geopolymer-based rice straw fiberboard and preparation method 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
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

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