CN108191358A - A kind of Novel wall body heat insulation material and preparation method thereof - Google Patents

A kind of Novel wall body heat insulation material and preparation method thereof Download PDF

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Publication number
CN108191358A
CN108191358A CN201810080635.5A CN201810080635A CN108191358A CN 108191358 A CN108191358 A CN 108191358A CN 201810080635 A CN201810080635 A CN 201810080635A CN 108191358 A CN108191358 A CN 108191358A
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minutes
novel
heat insulation
reaction kettle
temperature
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尚福平
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尚福平
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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
    • C04B28/02Compositions 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 hydraulic cements other than calcium sulfates
    • C04B28/06Aluminous 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
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/52Sound-insulating materials
    • 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
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/30Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
    • C04B2201/32Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
    • 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
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

Abstract

The invention discloses a kind of Novel wall body heat insulation materials and preparation method thereof, and in terms of parts by weight, the thermal insulation material mainly includes following components:22 42 parts of cement, 14 23 parts of polyvinyl acetate emulsion, 13 26 parts of improved plant straw powder, 3 10 parts of latex powder, 28 parts of cellulose ether, 1.3 6.5 parts of hollow glass micropearl, 0.3 2.2 parts of water-reducing agent, 0.5 3.8 parts of coagulant.The present invention provides a kind of Novel wall body heat insulation material and preparation method thereof, which has many advantages, such as that lightweight, high-strength, good heat insulating, water absorption rate is low, sound-absorbing is shockproof, and preparation method is simple, suitable for mass producing and applying.

Description

A kind of Novel wall body heat insulation material and preparation method thereof
Technical field
The present invention relates to building material technical fields, and in particular to a kind of Novel wall body heat insulation material and preparation method thereof.
Background technology
According to the Energy Conservation outline of country, emphasis energy-saving field is building energy conservation, industrial energy saving, transport energy savings, is consumed Huge building energy consumption is measured to stand in the breach.Therefore, in order to develop in 21 century quick and stable, for China's materials for wall Reform has become the fundamental state policy in China with building energy conservation, develops the novel wall material for meeting national code of building energy efficiency, As the mission of material researcher.
Based on this, occurs the heat preserving and insulating material of many walls on the market at present.
In patent CN103723961A, a kind of foamed concrete thermal-insulating material is just disclosed, by weight, the foam Concrete thermal-insulating material includes following components:100-150 parts of cement, 40-60 parts of flyash, 0.4-0.8 parts of foam stabilizer, foaming agent 6-10 parts, 0.3-0.8 parts of lithium carbonate, 1.5-2.5 parts of polypropylene fibre.The thermal insulation material is using industrial waste flyash as filling out On the one hand charge is rationally met the requirement to building material, on the one hand can be given full play to ordinary cement using industrial waste High intensity, high-durability, the service life for improving product, and not only durability is good, production for the foamed concrete thermal-insulating material It is at low cost, and product has the performances such as excellent insulation, is more advantageous to further genralrlization and the application of product.But it steeps Foam concrete is equally poor with slurry stability, and intensity is low, it is big to shrink and has easily opened the shortcomings that water suction etc. is many.
It is poor in order to solve stability existing for wall heat insulation material, and intensity is low, it is big to shrink and it is scarce easily to have opened water suction etc. Point.
In patent CN106280059A, a kind of plant fiber foamed wall heat insulation material and preparation method thereof is disclosed, Its raw material includes A, 5-15 parts of foaming agents of 100 parts of mixtures, 0-10 portions of nucleating agents and 5-20 parts of surfactants, wherein, it is described Mixture A is made of 20-60 parts of plant fiber liquefaction products and 40-80 parts of paste resins.By the way that plant fiber is added to foam It is poor so as to solve stability existing for wall heat insulation material in concrete, and intensity is low, it is big to shrink and it is scarce easily to have opened water suction etc. Point.But the plant fiber of addition is not modified processing, influences the durability and mechanical property of thermal insulation material, on the other hand Plant fiber infiltrates Soil Interface and connects not close, cohesiveness deficiency in advance, and then influences the compression strength of thermal insulation material, thermal insulation Energy.
Therefore, it is necessary to a kind of Novel wall body heat insulation material and preparation method thereof is provided, to solve to exist in the prior art The problem of.
Invention content
In view of the above-mentioned analysis to the prior art, the present invention provides a kind of Novel wall body heat insulation material and preparation method thereof, The thermal insulation material has many advantages, such as that lightweight, high-strength, good heat insulating, water absorption rate is low, sound-absorbing is shockproof, and preparation method is simple, fits In large-scale production and application.
In order to achieve the above object, the present invention is achieved through the following technical solutions:
A kind of Novel wall body heat insulation material, in terms of parts by weight, the thermal insulation material mainly includes following components:
Preferably, in terms of parts by weight, the thermal insulation material mainly includes following components:
Preferably, the cement is selected from 42.5 quick sulphate aluminium cement.
Preferably, the preparation method of the improved plant straw powder is as follows:
(1) maize straw, wheat stalk, cotton stalk or the beanstalk stalk discarded in agricultural production are collected, stalk is crushed To 80-100 mesh;
(2) stalk powder is dried to moisture within 5%, be sent into reaction kettle, and added in into reaction kettle bright Latex solution (solid content 40%) carries out straw dipping 24-48h, and temperature in reaction kettle is controlled at 80-85 DEG C, at the uniform velocity to stir Reaction 20-30 minutes, then takes out, and is dried, is re-fed into freezing equipment, is freezed 40 minutes under subzero 15 DEG C of environment, into The cold-resistant processing of row;
(3) straw powder is sent into ball mill after freezing processing, continuously grinding 4 hours crosses 150-250 mesh sieve, dries moisture Content obtains improved plant straw powder to 17%.
Preferably, the latex powder is two or three of copolymer in vinylacetate, ethylene and acrylic acid.
Preferably, the cellulose ether is methyl cellulose ether, carboxy-propyl cellulose ether, carboxylic propyl starch ether, carboxylic first One or both of base starch ether.
Preferably, the water-reducing agent is high-efficiency water-reducing agent of poly-carboxylic acid.
Preferably, the one kind of the coagulant in calcium chloride, sodium metasilicate, aluminum sulfate.
The present invention also provides a kind of preparation methods of Novel wall body heat insulation material, include the following steps:
(1) each raw material is weighed according to regulation weight;
(2) cement, improved plant straw powder, latex powder, hollow glass micropearl are added in into reaction kettle successively in 5 minutes, First dry-mixed 10-20 minutes;
(3) it is dry-mixed to add in polyvinyl acetate emulsion, water-reducing agent, coagulant in 2 minutes afterwards, then it is mixed 4-8 minutes, Kettle temperature is maintained at 55-60 DEG C;
(4) cellulose ether in 10-12 minutes was added, be then mixed 8 minutes;
(5) when kettle temperature drops to 30-35 DEG C, kettle discharging is opened, base-material is sent into electrothermal furnace and is heated, mixtures is waited to melt After melting, open electric furnace discharge valve, material is pipelined to mold forming production line, open mold feeding valve carry out into Type;
(6) after being molded, mold is opened, finished product is taken out and is cooled down to get the Novel wall body heat insulation material.
It is completed preferably, the mixing in step (4) is divided into 4 stages:
1st stage:Reaction kettle sets pressure as 135mbar, and temperature is 55 DEG C, incorporation time 2 minutes;
2nd stage:Reaction kettle sets pressure as 115mbar, and temperature is 51 DEG C, incorporation time 2 minutes;
3rd stage:Reaction kettle sets pressure as 100mbar, and temperature is 47 DEG C, incorporation time 2 minutes;
4th stage:Reaction kettle sets pressure as 95mbar, and temperature is 42 DEG C, incorporation time 2 minutes.
Compared with prior art, the present invention the present invention has following advantageous effect:
(1) thermal insulation material of the invention, by plant straw powder incorporating modified in cement, can effectively improve tradition Contraction fissure existing for foam concrete, the problems such as toughness is insufficient, realize the durability and heat-insulating property of thermal insulation material.Separately Outside, the present invention is connected by adding in the interface that polyvinyl acetate emulsion can be effectively improved between improved plant straw powder and cement, On the one hand it can increase the cohesiveness between improved plant straw powder, on the other hand, polyvinyl acetate particle can be filled in water In mud gel, and cement is made preferably to be cohered with improved plant straw powder, mixed so as to form sealing structure cement of good performance Solidifying soil, improves the compression strength of thermal insulation material, and heat-insulating property reduces water absorption rate.
(2) present invention is modified plant straw powder by gelatin emulsion, can form one layer in plant fibre surface Protective film can prevent the depolymerization of fiber in this way, while can reduce the water absorption rate of fiber, the intensity of reinforcing fiber, after making molding again Cement-based material have excellent mechanical property and endurance quality.
(3) latex powder that uses of the present invention mainly plays water conservation and enhancing toughness, prevent cement cross rapid hardening, Dry and cracking phenomena.
(4) cellulose ether that the present invention uses can improve the sag resistance of thermal insulation material, reduce heat preservation as thickener The adherence of material extends open hour etc..
(5) hollow glass micropearl that the present invention uses has the function of heat-insulating sound-insulating insulation, will be filled in thermal insulation material, The thermal conductivity factor of thermal insulation material can effectively be reduced, improve the effects that flexural strength.
(6) water-reducing agent of the invention can improve the water resistance of thermal insulation material.
(7) coagulant of the invention solves the disadvantage that cement retardative.
(8) thermal insulation material preparation process of the invention is simple, industrialized production easy to implement, can be widely applied to building neck Domain has the function that energy-saving and emission-reduction.
Specific embodiment
Form by the following examples is described in further detail, but should not be by this above of present invention again The range for being interpreted as the above-mentioned theme of the present invention is only limitted to following embodiment, all based on the technology realized belonging to the above of the present invention It all belongs to the scope of the present invention.
Embodiment 1
A kind of Novel wall body heat insulation material, in terms of parts by weight, the thermal insulation material mainly includes following components:
Wherein, the cement is selected from 42.5 quick sulphate aluminium cement.
Wherein, the preparation method of the improved plant straw powder is as follows:
(1) maize straw, wheat stalk, cotton stalk or the beanstalk stalk discarded in agricultural production are collected, stalk is crushed To 90 mesh;
(2) stalk powder is dried to moisture within 5%, be sent into reaction kettle, and added in into reaction kettle bright Latex solution (solid content 40%) carries out straw dipping 36h, and temperature in reaction kettle is controlled at 82 DEG C, to be at the uniform velocity stirred to react 25 Minute, it then takes out, is dried, is re-fed into freezing equipment, is freezed 40 minutes under subzero 15 DEG C of environment, carry out cold-resistant place Reason;
(3) straw powder is sent into ball mill after freezing processing, continuously grinding 4 hours crosses 200 mesh sieve, dries moisture To 17%, improved plant straw powder is obtained.
Wherein, the latex powder is two or three of copolymer in vinylacetate, ethylene and acrylic acid.
Wherein, the cellulose ether is methyl cellulose ether, carboxy-propyl cellulose ether, carboxylic propyl starch ether, carboxymethyl form sediment One or both of powder ether.
Wherein, the water-reducing agent is high-efficiency water-reducing agent of poly-carboxylic acid.
Wherein, the one kind of the coagulant in calcium chloride, sodium metasilicate, aluminum sulfate.
The present invention also provides a kind of preparation methods of Novel wall body heat insulation material, include the following steps:
(1) each raw material is weighed according to regulation weight;
(2) cement, improved plant straw powder, latex powder, hollow glass micropearl are added in into reaction kettle successively in 5 minutes, First dry-mixed 15 minutes;
(3) it is dry-mixed to add in polyvinyl acetate emulsion, water-reducing agent, coagulant in 2 minutes afterwards, then it is mixed 4-8 minutes, Kettle temperature is maintained at 58 DEG C;
(4) cellulose ether in 11 minutes was added, be then mixed 8 minutes;
(5) when kettle temperature drops to 32.5 DEG C, kettle discharging is opened, base-material is sent into electrothermal furnace and is heated, mixtures is waited to melt After melting, open electric furnace discharge valve, material is pipelined to mold forming production line, open mold feeding valve carry out into Type;
(6) after being molded, mold is opened, finished product is taken out and is cooled down to get the Novel wall body heat insulation material.
Wherein, the mixing in step (4) is divided into 4 stages completions:
1st stage:Reaction kettle sets pressure as 135mbar, and temperature is 55 DEG C, incorporation time 2 minutes;
2nd stage:Reaction kettle sets pressure as 115mbar, and temperature is 51 DEG C, incorporation time 2 minutes;
3rd stage:Reaction kettle sets pressure as 100mbar, and temperature is 47 DEG C, incorporation time 2 minutes;
4th stage:Reaction kettle sets pressure as 95mbar, and temperature is 42 DEG C, incorporation time 2 minutes.
Embodiment 2
A kind of Novel wall body heat insulation material, in terms of parts by weight, the thermal insulation material mainly includes following components:
Wherein, the cement is selected from 42.5 quick sulphate aluminium cement.
Wherein, the preparation method of the improved plant straw powder is as follows:
(1) maize straw, wheat stalk, cotton stalk or the beanstalk stalk discarded in agricultural production are collected, stalk is crushed To 80 mesh;
(2) stalk powder is dried to moisture within 5%, be sent into reaction kettle, and added in into reaction kettle bright Latex solution (solid content 40%) impregnates straw for 24 hours, and temperature in reaction kettle is controlled at 80 DEG C, to be at the uniform velocity stirred to react 20 Minute, it then takes out, is dried, is re-fed into freezing equipment, is freezed 40 minutes under subzero 15 DEG C of environment, carry out cold-resistant place Reason;
(3) straw powder is sent into ball mill after freezing processing, continuously grinding 4 hours crosses 150 mesh sieve, dries moisture To 17%, improved plant straw powder is obtained.
Wherein, the latex powder is two or three of copolymer in vinylacetate, ethylene and acrylic acid.
Wherein, the cellulose ether is methyl cellulose ether, carboxy-propyl cellulose ether, carboxylic propyl starch ether, carboxymethyl form sediment One or both of powder ether.
Wherein, the water-reducing agent is high-efficiency water-reducing agent of poly-carboxylic acid.
Wherein, the one kind of the coagulant in calcium chloride, sodium metasilicate, aluminum sulfate.
The present invention also provides a kind of preparation methods of Novel wall body heat insulation material, include the following steps:
(1) each raw material is weighed according to regulation weight;
(2) cement, improved plant straw powder, latex powder, hollow glass micropearl are added in into reaction kettle successively in 5 minutes, First dry-mixed 10 minutes;
(3) it is dry-mixed to add in polyvinyl acetate emulsion, water-reducing agent, coagulant in 2 minutes afterwards, it is then mixed 4 minutes, kettle Temperature is maintained at 55 DEG C;
(4) cellulose ether in 10 minutes was added, be then mixed 8 minutes;
(5) when kettle temperature drops to 30 DEG C, kettle discharging is opened, base-material is sent into electrothermal furnace and is heated, mixtures is waited to melt Afterwards, open electric furnace discharge valve, material is pipelined to mold forming production line, open mold feeding valve carry out into Type;
(6) after being molded, mold is opened, finished product is taken out and is cooled down to get the Novel wall body heat insulation material.
Wherein, the mixing in step (4) is divided into 4 stages completions:
1st stage:Reaction kettle sets pressure as 135mbar, and temperature is 55 DEG C, incorporation time 2 minutes;
2nd stage:Reaction kettle sets pressure as 115mbar, and temperature is 51 DEG C, incorporation time 2 minutes;
3rd stage:Reaction kettle sets pressure as 100mbar, and temperature is 47 DEG C, incorporation time 2 minutes;
4th stage:Reaction kettle sets pressure as 95mbar, and temperature is 42 DEG C, incorporation time 2 minutes.
Embodiment 3
A kind of Novel wall body heat insulation material, in terms of parts by weight, the thermal insulation material mainly includes following components:
Wherein, the cement is selected from 42.5 quick sulphate aluminium cement.
Wherein, the preparation method of the improved plant straw powder is as follows:
(1) maize straw, wheat stalk, cotton stalk or the beanstalk stalk discarded in agricultural production are collected, stalk is crushed To 100 mesh;
(2) stalk powder is dried to moisture within 5%, be sent into reaction kettle, and added in into reaction kettle bright Latex solution (solid content 40%) carries out straw dipping 48h, and temperature in reaction kettle is controlled at 85 DEG C, to be at the uniform velocity stirred to react 30 Minute, it then takes out, is dried, is re-fed into freezing equipment, is freezed 40 minutes under subzero 15 DEG C of environment, carry out cold-resistant place Reason;
(3) straw powder is sent into ball mill after freezing processing, continuously grinding 4 hours crosses 250 mesh sieve, dries moisture To 17%, improved plant straw powder is obtained.
Wherein, the latex powder is two or three of copolymer in vinylacetate, ethylene and acrylic acid.
Wherein, the cellulose ether is methyl cellulose ether, carboxy-propyl cellulose ether, carboxylic propyl starch ether, carboxymethyl form sediment One or both of powder ether.
Wherein, the water-reducing agent is high-efficiency water-reducing agent of poly-carboxylic acid.
Wherein, the one kind of the coagulant in calcium chloride, sodium metasilicate, aluminum sulfate.
The present invention also provides a kind of preparation methods of Novel wall body heat insulation material, include the following steps:
(1) each raw material is weighed according to regulation weight;
(2) cement, improved plant straw powder, latex powder, hollow glass micropearl are added in into reaction kettle successively in 5 minutes, First dry-mixed 20 minutes;
(3) it is dry-mixed to add in polyvinyl acetate emulsion, water-reducing agent, coagulant in 2 minutes afterwards, it is then mixed 8 minutes, kettle Temperature is maintained at 55-60 DEG C;
(4) cellulose ether in 12 minutes was added, be then mixed 8 minutes;
(5) when kettle temperature drops to 35 DEG C, kettle discharging is opened, base-material is sent into electrothermal furnace and is heated, mixtures is waited to melt Afterwards, open electric furnace discharge valve, material is pipelined to mold forming production line, open mold feeding valve carry out into Type;
(6) after being molded, mold is opened, finished product is taken out and is cooled down to get the Novel wall body heat insulation material.
It is completed preferably, the mixing in step (4) is divided into 4 stages:
1st stage:Reaction kettle sets pressure as 135mbar, and temperature is 55 DEG C, incorporation time 2 minutes;
2nd stage:Reaction kettle sets pressure as 115mbar, and temperature is 51 DEG C, incorporation time 2 minutes;
3rd stage:Reaction kettle sets pressure as 100mbar, and temperature is 47 DEG C, incorporation time 2 minutes;
4th stage:Reaction kettle sets pressure as 95mbar, and temperature is 42 DEG C, incorporation time 2 minutes.
Embodiment 4
A kind of Novel wall body heat insulation material, in terms of parts by weight, the thermal insulation material mainly includes following components:
Wherein, the cement is selected from 42.5 quick sulphate aluminium cement.
Wherein, the preparation method of the improved plant straw powder is as follows:
(1) maize straw, wheat stalk, cotton stalk or the beanstalk stalk discarded in agricultural production are collected, stalk is crushed To 80 mesh;
(2) stalk powder is dried to moisture within 5%, be sent into reaction kettle, and added in into reaction kettle bright Latex solution (solid content 40%) carries out straw dipping 48h, and temperature in reaction kettle is controlled at 85 DEG C, to be at the uniform velocity stirred to react 25 Minute, it then takes out, is dried, is re-fed into freezing equipment, is freezed 40 minutes under subzero 15 DEG C of environment, carry out cold-resistant place Reason;
(3) straw powder is sent into ball mill after freezing processing, continuously grinding 4 hours crosses 150 mesh sieve, dries moisture To 17%, improved plant straw powder is obtained.
Wherein, the latex powder is two or three of copolymer in vinylacetate, ethylene and acrylic acid.
Wherein, the cellulose ether is methyl cellulose ether, carboxy-propyl cellulose ether, carboxylic propyl starch ether, carboxymethyl form sediment One or both of powder ether.
Wherein, the water-reducing agent is high-efficiency water-reducing agent of poly-carboxylic acid.
Wherein, the one kind of the coagulant in calcium chloride, sodium metasilicate, aluminum sulfate.
The present invention also provides a kind of preparation methods of Novel wall body heat insulation material, include the following steps:
(1) each raw material is weighed according to regulation weight;
(2) cement, improved plant straw powder, latex powder, hollow glass micropearl are added in into reaction kettle successively in 5 minutes, First dry-mixed 18 minutes;
(3) it is dry-mixed to add in polyvinyl acetate emulsion, water-reducing agent, coagulant in 2 minutes afterwards, then it is mixed 4-8 minutes, Kettle temperature is maintained at 55 DEG C;
(4) cellulose ether in 12 minutes was added, be then mixed 8 minutes;
(5) when kettle temperature drops to 35 DEG C, kettle discharging is opened, base-material is sent into electrothermal furnace and is heated, mixtures is waited to melt Afterwards, open electric furnace discharge valve, material is pipelined to mold forming production line, open mold feeding valve carry out into Type;
(6) after being molded, mold is opened, finished product is taken out and is cooled down to get the Novel wall body heat insulation material.
Wherein, the mixing in step (4) is divided into 4 stages completions:
1st stage:Reaction kettle sets pressure as 135mbar, and temperature is 55 DEG C, incorporation time 2 minutes;
2nd stage:Reaction kettle sets pressure as 115mbar, and temperature is 51 DEG C, incorporation time 2 minutes;
3rd stage:Reaction kettle sets pressure as 100mbar, and temperature is 47 DEG C, incorporation time 2 minutes;
4th stage:Reaction kettle sets pressure as 95mbar, and temperature is 42 DEG C, incorporation time 2 minutes.
Embodiment 5
A kind of Novel wall body heat insulation material, in terms of parts by weight, the thermal insulation material mainly includes following components:
Wherein, the cement is selected from 42.5 quick sulphate aluminium cement.
Wherein, the preparation method of the improved plant straw powder is as follows:
(1) maize straw, wheat stalk, cotton stalk or the beanstalk stalk discarded in agricultural production are collected, stalk is crushed To 100 mesh;
(2) stalk powder is dried to moisture within 5%, be sent into reaction kettle, and added in into reaction kettle bright Latex solution (solid content 40%) carries out straw dipping 48h, and temperature in reaction kettle is controlled at 80 DEG C, to be at the uniform velocity stirred to react 25 Minute, it then takes out, is dried, is re-fed into freezing equipment, is freezed 40 minutes under subzero 15 DEG C of environment, carry out cold-resistant place Reason;
(3) straw powder is sent into ball mill after freezing processing, continuously grinding 4 hours crosses 250 mesh sieve, dries moisture To 17%, improved plant straw powder is obtained.
Wherein, the latex powder is two or three of copolymer in vinylacetate, ethylene and acrylic acid.
Wherein, the cellulose ether is methyl cellulose ether, carboxy-propyl cellulose ether, carboxylic propyl starch ether, carboxymethyl form sediment One or both of powder ether.
Wherein, the water-reducing agent is high-efficiency water-reducing agent of poly-carboxylic acid.
Wherein, the one kind of the coagulant in calcium chloride, sodium metasilicate, aluminum sulfate.
The present invention also provides a kind of preparation methods of Novel wall body heat insulation material, include the following steps:
(1) each raw material is weighed according to regulation weight;
(2) cement, improved plant straw powder, latex powder, hollow glass micropearl are added in into reaction kettle successively in 5 minutes, First dry-mixed 15 minutes;
(3) it is dry-mixed to add in polyvinyl acetate emulsion, water-reducing agent, coagulant in 2 minutes afterwards, then it is mixed 4-8 minutes, Kettle temperature is maintained at 55 DEG C;
(4) cellulose ether in 10 minutes was added, be then mixed 8 minutes;
(5) when kettle temperature drops to 35 DEG C, kettle discharging is opened, base-material is sent into electrothermal furnace and is heated, mixtures is waited to melt Afterwards, open electric furnace discharge valve, material is pipelined to mold forming production line, open mold feeding valve carry out into Type;
(6) after being molded, mold is opened, finished product is taken out and is cooled down to get the Novel wall body heat insulation material.
It is completed preferably, the mixing in step (4) is divided into 4 stages:
1st stage:Reaction kettle sets pressure as 135mbar, and temperature is 55 DEG C, incorporation time 2 minutes;
2nd stage:Reaction kettle sets pressure as 115mbar, and temperature is 51 DEG C, incorporation time 2 minutes;
3rd stage:Reaction kettle sets pressure as 100mbar, and temperature is 47 DEG C, incorporation time 2 minutes;
4th stage:Reaction kettle sets pressure as 95mbar, and temperature is 42 DEG C, incorporation time 2 minutes.
Comparative example 1
The wall thermal insulation material being prepared with reference to patent CN103723961A.
Comparative example 2
The wall thermal insulation material being prepared with reference to patent CN106280059A.
Comparative example 3
A kind of novel wall thermal insulation material is not both that the comparative example eliminates polyvinyl acetate emulsion with embodiment 1, Other conditions are constant.
Comparative example 4
A kind of novel wall thermal insulation material is not both that the comparative example is low by improved plant straw powder number with embodiment 1 In defined lower limiting value, in terms of parts by weight,
Other conditions are constant.
Comparative example 5
A kind of novel wall thermal insulation material is not both that the comparative example eliminates hollow glass micropearl with embodiment 1, Its condition is constant.
Test method
(1) Determination of conductive coefficients
Thermal insulation material obtained in embodiment 1-5 and comparative example 1-5 is placed in insulating box simultaneously, in 378 scholar's 5K temperature Drier, which is moved to, after drying to constant weight down is cooled to room temperature;The heating furnace cover of thermal conductivity test instrument is opened, each sample is individually placed to Position above and below testing element in heating furnace, the surface of sample each as possible keeps relatively closely contact, after shutting heating furnace cover Test;Connect general supply, will control heating furnace automatic temperature control switch disk be allocated to it is scheduled control furnace temperature (373K, 473K, 573K, 673K、773K、873K);Test system switching is opened, treats that every test condition enters normal condition;Automatic calibration knob is opened, Correction finishes, and by calibrating knob slew test shelves, after microcomputer automatically processes data, it is tested that liquid crystal display watch starts display The mean temperature of sample and thermal conductivity factor at this temperature, the thermal conductivity factor of each sample at each temperature take three random to (six pieces) The statistical average of sampling.
(2) compressive strength test
Thermal insulation material obtained in embodiment 1-5 and comparative example 1-5 is dried to constant-quality, and be cooled to room temperature, so Afterwards in the center in piece lengths direction, the width of test specimen upper and lower faces and the thickness of side are measured respectively, then by test specimen It is placed on the bearing plate of testing machine, testing machine bearing plate center is made to be overlapped with test specimen center, open testing machine, when top board and examination Part closest to when stop, then by testing machine with the speed of 10mm/min to test specimen loading, then during test specimen compressive deformation 5%, note Registration is carried, calculates compression strength.
Experimental example 1
Thermal conductivity factor experiment, tool are carried out with thermal insulation material obtained prepared by comparative example 1-5 according to 1-5 of the embodiment of the present invention Body the results are shown in Table 1:
1 performance test results of table
As it can be seen from table 1 the thermal conductivity factor of the thermal insulation material of the present invention is better than comparative example, and in higher temperature 873K feelings Under condition, can also have relatively low thermal conductivity factor, the requirement of metope heat preservation can be met.Wherein comparative example 3 is due to eliminating poly-vinegar acid Vac emulsion so that cement coheres decline with improved plant straw powder, so that thermal insulation material heat-proof quality obtained declines, Thermal conductivity factor is higher than embodiment 1-5;In addition, comparative example 4 is since the component of improved plant straw powder being reduced, in this way, changing in this way Property plant straw powder incorporation reduce, the defects of causing concrete cracking, collapse, so that thermal insulation material thermal insulation obtained It can decline, thermal conductivity factor is higher than embodiment 1-5;Comparative example 5 causes its heat conduction system due to inorganic thermal insulation filler hollow glass micropearl Number is higher than embodiment 1-5.
Experimental example 2
1-5 of the embodiment of the present invention is used to carry out compressive strength test, tool with thermal insulation material obtained prepared by comparative example 1-5 Body the results are shown in Table 2:
2 performance test results of table
Sample Compression strength (MPa)
The embodiment of the present invention 1 1.21
The embodiment of the present invention 2 1.15
The embodiment of the present invention 3 1.18
The embodiment of the present invention 4 1.16
The embodiment of the present invention 5 1.14
Comparative example 1 0.88
Comparative example 2 1.02
Comparative example 3 0.76
Comparative example 4 0.82
Comparative example 5 0.72
From table 2 it can be seen that the intensity of the wall heat insulation material of the present invention is higher than comparative example, wherein, comparative example 3 is due to saving Polyvinyl acetate emulsion is removed so that cement coheres decline with improved plant straw powder, so that thermal insulation material obtained is strong Hydraulic performance decline is spent, its intensity is caused to be less than embodiment 1-5;In addition, comparative example 4 is since the component of improved plant straw powder being reduced, In this way, improved plant straw powder incorporation is reduced in this way, concrete is caused to combine and defect occurs, so that thermal insulating material obtained Expect that intensity declines, intensity is less than embodiment 1-5.
Experimental example 3
It is carried out using wall heat insulation material obtained in wall heat insulation material made from embodiment 1-5 and comparative example 1-5 Performance test in terms of sound-absorbing, water suction, with specific reference to standard it is as follows:
Sound-absorption coefficient:GB/T 18696.1-2004.
Water absorption rate:GB/T 11970-1997.
It is as shown in table 3 below to obtain result:
3 performance test results of table
Project Sound-absorption coefficient Water absorption rate (%)
The embodiment of the present invention 1 0.75 2.3
The embodiment of the present invention 2 0.71 2.6
The embodiment of the present invention 3 0.69 2.0
The embodiment of the present invention 4 0.67 1.9
The embodiment of the present invention 5 0.73 2.8
Comparative example 1 0.35 6.8
Comparative example 2 0.55 5.5
Comparative example 3 0.63 5.1
Comparative example 4 0.58 4.8
Comparative example 5 0.44 4.4
As shown in Table 3, the sound-absorbing effect of wall heat insulation material made from the embodiment of the present invention, water absorption rate are superior to compare Example.
In conclusion the present invention provides a kind of Novel wall body heat insulation material and preparation method thereof, which has light Matter, high-strength, good heat insulating, the advantages that water absorption rate is low, sound-absorbing is shockproof, and preparation method is simple, suitable for mass producing and answering With
It is merely a preferred embodiment of the present invention, is not intended to restrict the invention, although with reference to aforementioned implementation described in upper The present invention is described in detail in example, for those skilled in the art, still can be to foregoing embodiments Recorded technical solution modifies or carries out equivalent replacement to which part technical characteristic.All spirit in the present invention Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.

Claims (10)

1. a kind of Novel wall body heat insulation material, which is characterized in that in terms of parts by weight, the thermal insulation material mainly includes with the following group Point:
2. Novel wall body heat insulation material according to claim 1, which is characterized in that in terms of parts by weight, the thermal insulating material Material mainly includes following components:
3. Novel wall body heat insulation material according to claim 1, which is characterized in that the cement is selected from 42.5 quick sulphur Aluminate cement.
4. Novel wall body heat insulation material according to claim 1, which is characterized in that the preparation of the improved plant straw powder Method is as follows:
(1) maize straw, wheat stalk, cotton stalk or the beanstalk stalk discarded in agricultural production are collected, stalk is crushed to 80- 100 mesh;
(2) stalk powder is dried to moisture within 5%, be sent into reaction kettle, and gelatin breast is added in into reaction kettle Liquid (solid content 40%) carries out straw dipping 24-48h, and temperature in reaction kettle is controlled at 80-85 DEG C, to be at the uniform velocity stirred to react It 20-30 minutes, then takes out, is dried, is re-fed into freezing equipment, is freezed 40 minutes under subzero 15 DEG C of environment, carry out resistance to Cold processing;
(3) straw powder is sent into ball mill after freezing processing, continuously grinding 4 hours crosses 150-250 mesh sieve, dries moisture To 17%, improved plant straw powder is obtained.
5. Novel wall body heat insulation material according to claim 1, which is characterized in that the latex powder for vinylacetate, Two or three of copolymer in ethylene and acrylic acid.
6. Novel wall body heat insulation material according to claim 1, which is characterized in that the cellulose ether is methylcellulose One or both of ether, carboxy-propyl cellulose ether, carboxylic propyl starch ether, carboxymethyl starch ether.
7. Novel wall body heat insulation material according to claim 1, which is characterized in that the water-reducing agent efficiently subtracts for polycarboxylic acids Aqua.
8. Novel wall body heat insulation material according to claim 1, which is characterized in that the coagulant is selected from calcium chloride, silicon One kind in sour sodium, aluminum sulfate.
A kind of 9. preparation method according to claim 1-8 any one of them Novel wall body heat insulation materials, which is characterized in that packet Include following steps:
(1) each raw material is weighed according to regulation weight;
(2) cement, improved plant straw powder, latex powder, hollow glass micropearl are added in into reaction kettle successively in 5 minutes, first done It is 10-20 minutes mixed;
(3) it is dry-mixed to add in polyvinyl acetate emulsion, water-reducing agent, coagulant in 2 minutes afterwards, it is then mixed 4-8 minutes, kettle temperature It is maintained at 55-60 DEG C;
(4) cellulose ether in 10-12 minutes was added, be then mixed 8 minutes;
(5) when kettle temperature drops to 30-35 DEG C, kettle discharging is opened, base-material is sent into electrothermal furnace and is heated, mixtures is waited to melt Afterwards, open electric furnace discharge valve, material is pipelined to mold forming production line, open mold feeding valve carry out into Type;
(6) after being molded, mold is opened, finished product is taken out and is cooled down to get the Novel wall body heat insulation material.
10. the preparation method of Novel wall body heat insulation material according to claim 9, which is characterized in that mixed in step (4) It closes stirring and is divided into 4 stages completions:
1st stage:Reaction kettle sets pressure as 135mbar, and temperature is 55 DEG C, incorporation time 2 minutes;
2nd stage:Reaction kettle sets pressure as 115mbar, and temperature is 51 DEG C, incorporation time 2 minutes;
3rd stage:Reaction kettle sets pressure as 100mbar, and temperature is 47 DEG C, incorporation time 2 minutes;
4th stage:Reaction kettle sets pressure as 95mbar, and temperature is 42 DEG C, incorporation time 2 minutes.
CN201810080635.5A 2018-01-28 2018-01-28 A kind of Novel wall body heat insulation material and preparation method thereof Withdrawn CN108191358A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108503320A (en) * 2018-06-25 2018-09-07 合肥金同维低温科技有限公司 A kind of building energy-saving heat-insulating material and its preparation process
CN111268966A (en) * 2020-01-23 2020-06-12 浙江大工新能源有限公司 Novel wall heat-insulating material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108503320A (en) * 2018-06-25 2018-09-07 合肥金同维低温科技有限公司 A kind of building energy-saving heat-insulating material and its preparation process
CN111268966A (en) * 2020-01-23 2020-06-12 浙江大工新能源有限公司 Novel wall heat-insulating material

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Application publication date: 20180622