CN106397938B - A kind of preparation method of concrete mortar bubble membrane material - Google Patents

A kind of preparation method of concrete mortar bubble membrane material Download PDF

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Publication number
CN106397938B
CN106397938B CN201610914416.3A CN201610914416A CN106397938B CN 106397938 B CN106397938 B CN 106397938B CN 201610914416 A CN201610914416 A CN 201610914416A CN 106397938 B CN106397938 B CN 106397938B
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parts
bubble
temperature
membrane material
stirred
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CN106397938A (en
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许斌
邹宇帆
蒋玉芳
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Xingyi Qiancheng Commercial Concrete Co., Ltd.
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Xingyi Qiancheng Commercial Concrete Co Ltd
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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
    • C08K9/00—Use of pretreated ingredients
    • C08K9/08—Ingredients agglomerated by treatment with a binding agent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/02—Selection of the hardening environment
    • C04B40/0254—Hardening in an enclosed space, e.g. in a flexible container
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/02—Selection of the hardening environment
    • C04B40/0263—Hardening promoted by a rise in temperature
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • 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
    • C08K3/346—Clay
    • 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
    • C08K9/00—Use of pretreated ingredients
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B29C2948/9259—Angular velocity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895—Barrel or housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92904—Die; Nozzle zone
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene

Abstract

The invention discloses a kind of concrete mortar preparation methods of bubble membrane material, belong to bubble chamber film technical field of material.Dolomite clay ball milling is sieved by the present invention, sonic oscillation is mixed with deionized water, the stirring such as styrene is added, it is heated to boiling insulation reaction, filter cake is filtered to obtain, after washing is dry, it is stirred with polyvinyl resin etc., it squeezes out cutting and mixing pellet is made, squeezed out in bubble chamber film extruder, wind and concrete mortar bubble membrane material is made.The beneficial effects of the present invention are: preparation step of the present invention is simple, gained bubble chamber film quality of materials is good, strong with concrete binding performance；Bubble membrane material fire resistance of the present invention is good, and fire-protection rating is A grades, and anti-puncture intensity is 8.652~9.568kg/cm2。

Description

A kind of preparation method of concrete mortar bubble membrane material
Technical field
The present invention relates to a kind of concrete mortar preparation methods of bubble membrane material, belong to bubble chamber film material preparation technology Field.
Background technique
Air-cushion film (bubble chamber film) method of curing is to utilize solar energy curing concrete, one kind of direct cover type.It and it is natural Method of curing is compared, and be can be shortened curing cycle, is saved maintenance water, easy to operate, component conservation is high-quality.Suitable for outdoor production Concrete component factory curing concrete.The specific practice of air-cushion film method of curing is: after concrete component formation, first covering Single layer black plastic film, then one layer of air-cushion film is covered on black plastic film surface, then compressing surrounding with sand pocket prevents sky Gas convection current makes to form one simple " greenhouse " between component and air-cushion film, when sunlight penetration air-cushion film arrival black plastic is thin When film surface, photo-thermal effect is generated, to reach concrete curing.Bubble chamber film is also known as air-cushion film, gas pearl film, bubble cloth, bubble Paper, bubble film, bubble film, air bubble film are one kind moisture-proof shockproof chemical products against pressure for packing filling, have good Good damping property, impact resistance, heat sealer, it is moisture-proof, corrosion-resistant, transparency is good the advantages that.Being take high pressure polyethylene as main original Material, then the auxiliary materials such as brightening agent, opening agent are added, plastic uptake is squeezed out into the product of bubble through 230 degree or so high temperature.It is a kind of quality Gently, good, nontoxic, the tasteless New Plastic Packing Materials of the transparency, the effects of damp proof, buffering can be played to product, is kept the temperature.Also it is gas Bubble pad.But this molecular weight product is high, is not easily decomposed when discarded, environment easy to pollute.And current bubble film quality is bad, it is fragile Damage, poor with the binding performance of concrete, fire resistance is poor, and heat insulation effect is caused to reduce.
Summary of the invention
The technical problems to be solved by the invention: it is bad for current bubble film quality, with the binding performance of concrete compared with Difference, the drawback of fire resistance difference, provide it is a kind of by dolomite clay ball milling be sieved, mix sonic oscillation with deionized water, add Enter the stirring such as styrene, be heated to boiling insulation reaction, filter to obtain filter cake, after washing is dry, is mixed with stirrings such as polyvinyl resins It closes, squeezes out cutting and mixing pellet is made, squeezed out in bubble chamber film extruder, wind and concrete mortar bubble membrane material is made Method.Preparation step of the present invention is simple, and gained bubble film quality is good, the excellent bonding performance with concrete, and fire resistance is strong.
In order to solve the above technical problems, the present invention is using technical solution as described below:
(1) it collects dolomite clay to be placed in ball mill, 3~5h of ball milling at 250~300r/min, subsequent mistake 120 ~130 meshes collect to obtain ball-milled powder, in mass ratio 1:10, ball-milled powder and deionized water are stirred, 200~ 10~15min of sonic oscillation under 300W collects to obtain dolomite clay dispersion liquid；
(2) according to parts by weight, 10~15 parts of styrene, 15~20 parts of divinylbenzenes, 25~30 parts of poly- creams are weighed respectively The dolomite clay dispersion liquid of acid monomers, 2~3 parts of acrylonitrile and 10~15 parts of above-mentioned preparations, is stirred and is heated to 60~70 DEG C, 2~3h of magnetic agitation；
(3) after the completion of to be mixed, it is heated to solution boiling, subsequent 45~60min of insulation reaction, standing is cooled to 20 ~30 DEG C, filter cake is filtered and collected, is washed 3~5 times with dehydrated alcohol and deionized water respectively, dry 6 at 65~70 DEG C~ 8h is prepared into clay modified microballoon；
(4) according to parts by weight, clay modified microballoon, 35~40 parts of polyethylene of 10~15 parts of above-mentioned preparations are weighed respectively Resin, 1~2 part of antioxidant 1010 and 0.3~0.5 part of irgasfos 168 are placed in batch mixer, are stirred at 3500~4000r/min 10~15min of mixing is mixed, mixed material is then collected and is placed in double screw extruder, control one Qu Wendu of double screw extruder It is 160~165 DEG C, two area's temperature are 165~170 DEG C, and three area's temperature are 170~175 DEG C, extruder revolving speed 50r/min, are collected Extruded stock is simultaneously cut, and is prepared into mixing pellet；
(5) the mixing pellet of above-mentioned preparation is placed in bubble chamber film extruder, controls extrusion molding raw material machine barrel feeding section temperature 130 150 DEG C, fluxing zone temperature is 170 190 DEG C, and homogenizing zone temperature is 200 220 DEG C, molding die and machine barrel linkage section Temperature is 160 180 DEG C, and molding die temperature is 160 170 DEG C, and plastic uptake bubble roller vacuum degree is 0.03~0.05MPa, to It squeezes out after processing is completed, is wound, a kind of concrete mortar bubble membrane material can be prepared into.
Concrete mortar bubble membrane material moisture-vapor transmission produced by the present invention is 0.06~0.07g/m2For 24 hours, Anti-puncture intensity is 8.652~9.568kg/cm2, reflectivity is 97.2~97.5%, and radiance is 3.1~3.2%, fire-protection rating It is A grades.
Application method of the invention: concrete mortar produced by the present invention is covered in concrete component with bubble membrane material Surface, then bubble membrane material surrounding is compressed with sand pocket, it is conserved.The associativity of bubble membrane material and concrete of the present invention Can be strong, it can effectively shorten curing cycle, save maintenance water, reduce maintenance cost, concrete component intensity is mentioned than natural curing It is high by 5.8~6.6%.
The present invention is compared with other methods, and advantageous effects are:
(1) preparation step of the present invention is simple, and gained bubble chamber film quality of materials is good, strong with concrete binding performance；
(2) bubble membrane material fire resistance of the present invention is good, and fire-protection rating is A grade, anti-puncture intensity for 8.652~ 9.568kg/cm2。
Specific embodiment
It collects dolomite clay first to be placed in ball mill, 3~5h of ball milling at 250~300r/min, subsequent mistake 120 ~130 meshes collect to obtain ball-milled powder, in mass ratio 1:10, ball-milled powder and deionized water are stirred, 200~ 10~15min of sonic oscillation under 300W collects to obtain dolomite clay dispersion liquid；Then according to parts by weight, respectively weigh 10~ 15 parts of styrene, 15~20 parts of divinylbenzenes, 25~30 parts of polylactic acid monomers, 2~3 parts of acrylonitrile and 10~15 parts of above-mentioned preparations Dolomite clay dispersion liquid, be stirred and be heated to 60~70 DEG C, 2~3h of magnetic agitation；After the completion of to be mixed, add Heat is warming up to solution boiling, subsequent 45~60min of insulation reaction, and standing is cooled to 20~30 DEG C, filters and collect filter cake, respectively It is washed 3~5 times with dehydrated alcohol and deionized water, dry 6~8h, is prepared into clay modified microballoon at 65~70 DEG C；It presses again Parts by weight meter, weigh respectively the clay modified microballoons of 10~15 parts of above-mentioned preparations, 35~40 parts of polyvinyl resins, 1~2 part it is anti- Oxygen agent 1010 and 0.3~0.5 part irgasfos 168 is placed in batch mixer, it is stirred 10 at 3500~4000r/min~ 15min then collects mixed material and is placed in double screw extruder, and control one area's temperature of double screw extruder is 160~165 DEG C, two area's temperature are 165~170 DEG C, and three area's temperature are 170~175 DEG C, extruder revolving speed 50r/min, collect extruded stock and cut It cuts, is prepared into mixing pellet；Finally the mixing pellet of above-mentioned preparation is placed in bubble chamber film extruder, controls extrusion molding raw material machine barrel 130 150 DEG C of feeding section temperature, fluxing zone temperature be 170 190 DEG C, homogenizing zone temperature be 200 220 DEG C, molding die with Machine barrel linkage section temperature be 160 180 DEG C, molding die temperature be 160 170 DEG C, plastic uptake bubble roller vacuum degree be 0.03~ 0.05MPa, it is to be extruded to be wound after processing is completed, a kind of concrete mortar bubble membrane material can be prepared into.
Example 1
It collects dolomite clay first to be placed in ball mill, the ball milling 3h at 250r/min, subsequent 120 mesh of mistake is received Collect to obtain ball-milled powder, in mass ratio 1:10, ball-milled powder and deionized water are stirred, the sonic oscillation 10min at 200W, Collect to obtain dolomite clay dispersion liquid；Then according to parts by weight, 10 parts of styrene, 15 parts of divinylbenzenes, 25 parts are weighed respectively The dolomite clay dispersion liquid of polylactic acid monomer, 2 parts of acrylonitrile and 10 parts of above-mentioned preparations, is stirred and is heated to 60 DEG C, magnetic agitation 2h；After the completion of to be mixed, it is heated to solution boiling, subsequent insulation reaction 45min, standing is cooled to 20 DEG C, filter cake is filtered and collected, is washed 3 times with dehydrated alcohol and deionized water respectively, dry 6h, is prepared into clay and changes at 65 DEG C Property microballoon；Again according to parts by weight, weigh respectively the clay modified microballoons of 10 parts of above-mentioned preparations, 35 parts of polyvinyl resins, 1 part it is anti- Oxygen agent 1010 and 0.3 part irgasfos 168 is placed in batch mixer, is stirred 10min at 3500r/min, then collects mixing Material is placed in double screw extruder, and control one area's temperature of double screw extruder is 160 DEG C, and two area's temperature are 165 DEG C, 3rd area Temperature is 170 DEG C, extruder revolving speed 50r/min, collects extruded stock and cuts, is prepared into mixing pellet；Finally by above-mentioned preparation Mixing pellet be placed in bubble chamber film extruder, control 130 DEG C of temperature of extrusion molding raw material machine barrel feeding section, fluxing zone temperature be 170 DEG C, homogenizing zone temperature is 200 DEG C, and molding die and machine barrel linkage section temperature are 160 DEG C, and molding die temperature is 160 DEG C, plastic uptake Bubble roller vacuum degree is 0.03MPa, to be extruded to be wound after processing is completed, can be prepared into a kind of concrete mortar gas Vacuolar membrane material.
Concrete mortar produced by the present invention is covered in surface of concrete structure with bubble membrane material, then is compressed with sand pocket Bubble membrane material surrounding, is conserved.The binding performance of bubble membrane material and concrete of the present invention is strong, can effectively shorten feeding The period is protected, maintenance water is saved, reduces maintenance cost, concrete component intensity improves 5.8% than natural curing.
Example 2
It collects dolomite clay first to be placed in ball mill, the ball milling 4h at 275r/min, subsequent 125 mesh of mistake is received Collect to obtain ball-milled powder, in mass ratio 1:10, ball-milled powder and deionized water are stirred, the sonic oscillation 13min at 250W, Collect to obtain dolomite clay dispersion liquid；Then according to parts by weight, 13 parts of styrene, 18 parts of divinylbenzenes, 28 parts are weighed respectively The dolomite clay dispersion liquid of polylactic acid monomer, 3 parts of acrylonitrile and 13 parts of above-mentioned preparations, is stirred and is heated to 65 DEG C, magnetic agitation 3h；After the completion of to be mixed, it is heated to solution boiling, subsequent insulation reaction 52min, standing is cooled to 25 DEG C, filter cake is filtered and collected, is washed 4 times with dehydrated alcohol and deionized water respectively, dry 7h, is prepared into clay and changes at 68 DEG C Property microballoon；Again according to parts by weight, weigh respectively the clay modified microballoons of 13 parts of above-mentioned preparations, 38 parts of polyvinyl resins, 2 parts it is anti- Oxygen agent 1010 and 0.4 part irgasfos 168 is placed in batch mixer, is stirred 13min at 3750r/min, then collects mixing Material is placed in double screw extruder, and control one area's temperature of double screw extruder is 163 DEG C, and two area's temperature are 168 DEG C, 3rd area Temperature is 173 DEG C, extruder revolving speed 50r/min, collects extruded stock and cuts, is prepared into mixing pellet；Finally by above-mentioned preparation Mixing pellet be placed in bubble chamber film extruder, control 140 DEG C of temperature of extrusion molding raw material machine barrel feeding section, fluxing zone temperature be 180 DEG C, homogenizing zone temperature is 210 DEG C, and molding die and machine barrel linkage section temperature are 170 DEG C, and molding die temperature is 165 DEG C, plastic uptake Bubble roller vacuum degree is 0.04MPa, to be extruded to be wound after processing is completed, can be prepared into a kind of concrete mortar gas Vacuolar membrane material.
Concrete mortar produced by the present invention is covered in surface of concrete structure with bubble membrane material, then is compressed with sand pocket Bubble membrane material surrounding, is conserved.The binding performance of bubble membrane material and concrete of the present invention is strong, can effectively shorten feeding The period is protected, maintenance water is saved, reduces maintenance cost, concrete component intensity improves 6.2% than natural curing.
Example 3
It collects dolomite clay first to be placed in ball mill, the ball milling 5h at 300r/min, subsequent 130 mesh of mistake is received Collect to obtain ball-milled powder, in mass ratio 1:10, ball-milled powder and deionized water are stirred, the sonic oscillation 15min at 300W, Collect to obtain dolomite clay dispersion liquid；Then according to parts by weight, 15 parts of styrene, 20 parts of divinylbenzenes, 30 parts are weighed respectively The dolomite clay dispersion liquid of polylactic acid monomer, 3 parts of acrylonitrile and 15 parts of above-mentioned preparations, is stirred and is heated to 70 DEG C, magnetic agitation 3h；After the completion of to be mixed, it is heated to solution boiling, subsequent insulation reaction 60min, standing is cooled to 30 DEG C, filter cake is filtered and collected, is washed 5 times with dehydrated alcohol and deionized water respectively, dry 8h, is prepared into clay and changes at 70 DEG C Property microballoon；Again according to parts by weight, weigh respectively the clay modified microballoons of 15 parts of above-mentioned preparations, 40 parts of polyvinyl resins, 2 parts it is anti- Oxygen agent 1010 and 0.5 part irgasfos 168 is placed in batch mixer, is stirred 15min at 4000r/min, then collects mixing Material is placed in double screw extruder, and control one area's temperature of double screw extruder is 165 DEG C, and two area's temperature are 170 DEG C, 3rd area Temperature is 175 DEG C, extruder revolving speed 50r/min, collects extruded stock and cuts, is prepared into mixing pellet；Finally by above-mentioned preparation Mixing pellet be placed in bubble chamber film extruder, control 150 DEG C of temperature of extrusion molding raw material machine barrel feeding section, fluxing zone temperature be 190 DEG C, homogenizing zone temperature is 220 DEG C, and molding die and machine barrel linkage section temperature are 180 DEG C, and molding die temperature is 170 DEG C, plastic uptake Bubble roller vacuum degree is 0.05MPa, to be extruded to be wound after processing is completed, can be prepared into a kind of concrete mortar gas Vacuolar membrane material.
Concrete mortar produced by the present invention is covered in surface of concrete structure with bubble membrane material, then is compressed with sand pocket Bubble membrane material surrounding, is conserved.The binding performance of bubble membrane material and concrete of the present invention is strong, can effectively shorten feeding The period is protected, maintenance water is saved, reduces maintenance cost, concrete component intensity improves 6.6% than natural curing.

Claims (1)

1. a kind of concrete mortar preparation method of bubble membrane material, it is characterised in that specific preparation step are as follows:
(1) it collects dolomite clay to be placed in ball mill, 3~5h of ball milling at 250~300r/min, subsequent mistake 120~130 Mesh collects to obtain ball-milled powder, in mass ratio 1:10, ball-milled powder and deionized water is stirred, and surpasses at 200~300W 10~15min of sound oscillation collects to obtain dolomite clay dispersion liquid；
(2) according to parts by weight, 10~15 parts of styrene, 15~20 parts of divinylbenzenes, 25~30 parts of polylactic acid lists are weighed respectively The dolomite clay dispersion liquid of body, 2~3 parts of acrylonitrile and 10~15 parts of above-mentioned preparations, be stirred and it is heated to 60~ 70 DEG C, 2~3h of magnetic agitation；
(3) after the completion of to be mixed, it is heated to solution boiling, subsequent 45~60min of insulation reaction, standing is cooled to 20~30 DEG C, filter cake is filtered and collected, is washed 3~5 times with dehydrated alcohol and deionized water respectively, dry 6~8h, system at 65~70 DEG C It is standby to obtain clay modified microballoon；
(4) according to parts by weight, the clay modified microballoons of 10~15 parts of above-mentioned preparations, 35~40 parts of polyethylene trees are weighed respectively Rouge, 1~2 part of antioxidant 1010 and 0.3~0.5 part of irgasfos 168 are placed in batch mixer, are stirred at 3500~4000r/min 10~15min is mixed, mixed material is then collected and is placed in double screw extruder, control one area's temperature of double screw extruder is 160~165 DEG C, two area's temperature are 165~170 DEG C, and three area's temperature are 170~175 DEG C, extruder revolving speed 50r/min, collect and squeeze It discharges and cuts, be prepared into mixing pellet；
(5) the mixing pellet of above-mentioned preparation is placed in bubble chamber film extruder, controls extrusion molding raw material machine barrel feeding section temperature 130 150 DEG C, fluxing zone temperature is 170 190 DEG C, and homogenizing zone temperature is 200 220 DEG C, molding die and machine barrel linkage section temperature It is 160 180 DEG C, molding die temperature is 160 170 DEG C, and plastic uptake bubble roller vacuum degree is 0.03~0.05MPa, to be extruded After processing is completed, it is wound, a kind of concrete mortar bubble membrane material can be prepared into.
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CN115947615B (en) * 2022-11-29 2023-07-14 江苏省苏安能节能建材科技有限公司 Preparation method of gypsum-based external wall heat insulation material

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