CN114763500A - Temperature phase change type concrete demolding and curing integrated material - Google Patents

Abstract

The temperature phase change type concrete demolding and curing integrated material is characterized by comprising the following raw materials: 10-40 parts of emulsified vegetable oil, 5-15 parts of a phase-change A component, 10-30 parts of a phase-change B component, 1-3 parts of an adhesive, 2-10 parts of a thixotropic agent, 0.1-0.5 part of a composite mildew inhibitor and 0.1-0.3 part of a water-based antirust agent. The material is simple to apply, the isolating membrane and the phase-change membrane can be quickly formed on the surface of the template by once brushing, the concrete demoulding effect is good, when the concrete is reacted and heated, the phase-change membrane can generate solid-liquid conversion and is chemically bonded with the surface layer of the concrete, the phase-change membrane generates liquid-solid conversion again after being cooled, the maintenance heat-preservation membrane is formed on the surface of the concrete, the good effects of preventing the water loss of the concrete and preventing cracking are achieved, and the material is suitable for templates of metal, plastic, wood and the like.

Description

Temperature phase change type concrete demoulding and curing integrated material

Technical Field

The invention belongs to the field of building materials, and particularly relates to a temperature phase change type concrete demolding and curing integrated material.

Background

Concrete curing is a key link for controlling the quality of concrete. After demoulding, the concrete needs to be cured by a series of measures such as covering and wrapping, sprinkling or dripping irrigation, spraying curing agent, covering a curing film and the like. The maintenance mode not only costs a large amount of manpower and material resources, but also has the problems that the coating film is difficult to clean, the maintenance measures such as water spraying and the like are greatly influenced by human factors and the like.

The integrated material for demoulding and curing concrete is a material which can complete two procedures of demoulding and curing when cast-in-place concrete is formed in one step, can play a role of a demoulding agent, and also has a function of a curing agent. The demoulding and curing integrated material can thoroughly change the conventional construction mode of solid concrete, complex curing measures such as coating of a curing film and long-term watering are not needed after the concrete is demoulded, and especially special-shaped and tall-structure concrete which is difficult to cure by conventional methods such as piers and beams greatly reduces the curing difficulty of the solid concrete, effectively saves a large amount of labor and curing cost, and has great significance for improving the quality of the solid concrete.

At present, the research of concrete demoulding and curing integrated materials is still in the initial stage, and a certain progress is made, for example, the invention patent "concrete demoulding and curing agent and manufacturing method thereof" (CN 1089322A) adopts fatty acid, bentonite, soda ash, ethanol, light calcium carbonate and water to prepare the demoulding and curing agent, and the demoulding and curing agent is prepared by adding light calcium carbonate with lubricating effect and bentonite with expansion effect on the basis of soap demoulding agent to improve demoulding effect and film forming effect; the invention relates to an expansion adsorption concrete demoulding and curing agent and a process (CN 1161271A), which adopts fatty acid, bentonite, soda ash, ethanol, water, industrial paraffin, rosin, polyvinyl alcohol, lubricating grease and the like to prepare the demoulding and curing agent, and a preparation method (CN 103332882A) of a novel concrete demoulding and curing agent adopts fatty acid, ethanol, soda ash, bentonite, talcum powder and vegetable oil to prepare the demoulding and curing agent, wherein the demoulding and curing agent is prepared by adding powder and film-forming materials on the basis of an emulsified oil demoulding agent, so that the demoulding effect and the stability of a film are improved; the invention relates to a concrete demoulding and curing agent (CN 102079638A), which adopts fat, lubricating grease, industrial soap, soda ash, alcohol, talcum powder, water glass and water, and is characterized in that sodium silicate capable of permeating into the surface layer of concrete is added on the basis of the demoulding and curing material, and the sodium silicate can react with calcium hydroxide to generate calcium silicate crystals, thereby improving the compactness of the surface layer of concrete and inhibiting water loss; the invention discloses a novel concrete curing agent and a release agent (CN 1361085A), which synthesizes a high-molecular release curing agent by adopting konjac glucomannan and NaOH. However, the existing concrete demoulding and curing integrated materials still cannot really meet the requirement of concrete demoulding and curing integration, and in actual use, the materials are still used as a demoulding agent or a curing agent singly and need to be respectively coated on the surfaces of a template and concrete to realize demoulding and curing effects.

Meanwhile, the existing release agent has poor applicability to templates, cannot be commonly used for different types of templates such as metal, plastic, wood and the like, and has certain pollution to the templates and concrete. The release agent plays a crucial role in influencing the quality of the surface state of solid concrete. In actual use, the release agent is found to easily cause uneven surface color, surface pitted surface, air holes and the like of concrete. The curing agent has the functions of water retention and curing by forming a film on the surface of the concrete. However, in practical application, the existing curing agent is found to have low bonding strength with concrete after film forming, low resistance to humidity, heat, alkali, weather and other aging, easy occurrence of problems of peeling, block falling and the like, limited water retention effect and difficult avoidance of concrete microcracks.

In the aspect of standards, the concrete demolding and curing integrated material standard does not exist. The reference standards of the release agent and the curing agent are mainly 'release agent for concrete products' (JC/T949-. The above standards have lacked the key technical requirements for release agents and curing agents, such as the stability of the adhesion of the release agent to the formwork, the stability of the adhesion of the curing agent to the concrete, the alkali resistance of the release agent and the curing agent, the sagging resistance of the release agent and the curing agent, and the like.

Disclosure of Invention

The invention aims to: the invention aims to overcome the defects of the prior art and provides a temperature phase change type concrete demoulding and curing integrated material.

The technical scheme is as follows: in order to achieve the purpose, the invention provides a temperature phase change type concrete demolding and curing integrated material which is composed of the following raw materials in parts by weight: 10-40 parts of emulsified vegetable oil and 5-15 parts of a phase-change A component, wherein the phase-change A component is obtained by emulsifying high-hydrogen-content silicone oil modified hydroxyl-containing oxidized paraffin, the phase-change B component is 10-30 parts of silane coupling agent modified paraffin, and the phase-change B component is obtained by emulsifying the silane coupling agent modified paraffin, and comprises 1-3 parts of an adhesive, 2-10 parts of a thixotropic agent, 0.1-0.5 part of a composite mildew preventive and 0.1-0.3 part of a water-based antirust agent.

The emulsified vegetable oil is one or more of emulsified rapeseed oil, emulsified castor oil and emulsified palm oil; the paraffin is one or two of liquid paraffin and solid paraffin with melting point lower than 60 ℃; the silane coupling agent is one or more of gamma- (methacryloyloxy) propyl trimethoxy silane, vinyl trimethoxy silane and vinyl triethoxy silane.

The obtained adhesive is one or more of polyethylene glycol, polyvinyl alcohol and cellulose ether; the thixotropic agent is one or more of polyamide wax, fumed silica and organic bentonite.

The temperature phase change type concrete demoulding and curing integrated material comprises the following preparation methods:

the first step is as follows: heating deionized water to a certain temperature, and adding a water-soluble emulsifier and guar gum serving as a stabilizer into the deionized water to prepare emulsified water;

the second step: heating vegetable oil to a certain temperature, adding an oil-soluble emulsifier into the vegetable oil until the emulsifier is completely dispersed in the vegetable oil, and adding emulsified water and deionized water under a high-speed stirring condition to prepare emulsified vegetable oil;

the third step: heating paraffin to a certain temperature, adding a catalyst manganese sulfate and an auxiliary agent stearic acid, stirring uniformly, introducing oxygen for reaction to obtain oxidized paraffin containing hydroxyl, cooling, slowly adding high-hydrogen silicone oil for reaction to obtain modified oxidized paraffin, adding an oil-soluble emulsifier into the modified oxidized paraffin, stirring uniformly, adding emulsified water and deionized water under a high-speed stirring condition, and obtaining a phase change A component;

the fourth step: heating paraffin to a certain temperature, adding a silane coupling agent, uniformly stirring, adding an initiator benzoyl peroxide, reacting to obtain modified paraffin, slowly adding an oil-soluble emulsifier into the modified paraffin, uniformly stirring, and adding emulsified water and deionized water under a high-speed stirring condition to obtain a phase-change component B;

The fifth step: uniformly mixing the phase change component A, the phase change component B and the emulsified vegetable oil, heating to a certain temperature, adding the adhesive, the water-based antirust agent and the composite mildew preventive, uniformly stirring, adding the thixotropic agent under the condition of high-speed stirring to adjust the system to a thixotropic state, and discharging to obtain the phase change anti-rust agent.

The working mechanism is as follows: the temperature phase change type concrete demoulding and curing integrated material is coated on the surface of a template to form an emulsified vegetable oil demoulding layer, a modified oxidized paraffin and a modified paraffin phase change layer, the emulsified vegetable oil demoulding layer ensures that concrete and the template are demoulded smoothly, the phase change layer is converted from a solid state into a liquid state when the hydration reaction of the concrete is heated, internal active hydrogen and silicon hydroxyl can react with the hydroxyl on the surface layer of the concrete to promote the modified oxidized paraffin and the modified paraffin to be bonded to the surface of the concrete, when the temperature of the surface layer of the concrete is reduced, the phase change layer is converted from the liquid state into the solid state, a layer of protective film is formed on the surface of the concrete to prevent the water inside the concrete from losing, the curing effect is achieved, meanwhile, the protective film also has a good energy storage and heat preservation effect, the temperature gradient from the inside of the concrete to the surface layer is reduced, and the cracking probability of the surface of the concrete is greatly reduced.

Has the advantages that: through a large number of experimental researches, the temperature phase change type concrete demoulding and curing integrated material provided by the invention has scientific and reasonable component proportion, and the composition has the following excellent properties:

(1) The concrete is directly coated on the surface of a mould, can realize the demoulding and the maintenance of the concrete by one-time construction, and is suitable for different types of templates of metal, plastic, wood and the like.

(2) The adhesive increases the film forming compactness of the demoulding layer and the phase change layer, the concrete demoulding performance is excellent, the protective film formed on the surface of the concrete by the phase change layer has good water retention and heat preservation effects, the effective water retention rate of the concrete is more than or equal to 92 percent, the compressive strength ratio of 7d to 28d is more than or equal to 100 percent, the surface cracks and bubbles of the concrete are greatly reduced, and the surface state is excellent.

(3) The material has certain thixotropy, does not sag when being coated on the surface of the template or the phase change layer is converted into a liquid state, has uniform thickness of the film layer, and prevents the conditions of poor local concrete demoulding effect and maintenance effect caused by over-thick or over-thin film layer.

(4) The phase change temperature of the material can be adjusted within a large range by adjusting the phase change component, so that the concrete demoulding and curing without working condition environment are adapted.

(5) The protective film formed on the surface of the concrete has strong adhesive capacity and excellent water resistance and scouring resistance.

Detailed Description

The following examples are given to illustrate the present invention and are not intended to limit the scope of the present invention.

The preparation process of the temperature phase change type concrete demoulding and curing integrated material comprises the following steps:

(1) deionized water is heated to 40 +/-2 ℃, and water-soluble emulsifier accounting for 4% of the mass of the deionized water and 0.3% of guar gum are slowly added to prepare emulsified water.

(2) Heating vegetable oil to 40 +/-2 ℃, slowly adding an oil-soluble emulsifier which accounts for 3% of the vegetable oil in mass until the emulsifier is completely dispersed in the vegetable oil, slowly adding emulsified water under the condition of stirring speed of 1500-1600 r/min until the emulsion is in phase inversion, stopping adding the emulsified water, maintaining stirring for 15min until the system is stable, continuously adding the rest emulsified water, wherein the total time of adding the emulsified water is 30min, after the emulsified water is added, increasing the stirring speed to 1700-1800 r/min, stirring for 30min, adding deionized water, reducing the stirring speed to 1300-1400 r/min, stirring for 15min, and discharging to obtain the emulsified vegetable oil.

(3) Heating paraffin to 90 +/-2 ℃, adding catalyst manganese sulfate accounting for 0.3 percent of the mass of the paraffin and 0.2 percent of auxiliary agent stearic acid, uniformly stirring, heating to 110 +/-DEG, introducing oxygen to react for 60min to obtain oxidized paraffin containing hydroxyl, cooling to 80 +/-2 ℃, slowly adding high hydrogen-containing silicone oil to react for 40min to obtain the modified oxidized paraffin. Slowly adding an oil-soluble emulsifier accounting for 3% of the paraffin mass into the modified oxidized paraffin, uniformly stirring, adding emulsified water and deionized water according to the method (2), and discharging to obtain the phase change A component.

(4) Heating paraffin to 80 +/-2 ℃, adding a silane coupling agent, uniformly stirring, adding an initiator benzoyl peroxide accounting for 2% of the mass of the paraffin, and reacting for 210min to obtain the modified paraffin. Slowly adding an oil-soluble emulsifier accounting for 3% of the paraffin mass into the modified paraffin, uniformly stirring, adding emulsified water and deionized water according to the method (2), and discharging to obtain the phase change B component.

(5) Uniformly mixing the phase change component A, the phase change component B and the emulsified vegetable oil, heating to 50 +/-2 ℃, adding the adhesive, the water-based antirust agent and the composite mildew inhibitor, uniformly stirring, adding the thixotropic agent, adjusting the system to a thixotropic state under the condition of stirring speed of 1700-1800 r/min, and discharging to obtain the phase change antirust and antirust oil.

Example 1

(1) Deionized water is heated to 40 +/-2 ℃, tween-20 accounting for 2 percent of the mass of the deionized water, sodium dodecyl sulfate accounting for 2 percent of the mass of the deionized water and guar gum accounting for 0.3 percent of the mass of the deionized water are slowly added to prepare emulsified water.

(2) Heating vegetable oil (50%, 25% and 25% of rapeseed oil, castor oil and palm oil respectively in mass fraction) to 40 +/-2 ℃, slowly adding SP-60 accounting for 3% of the vegetable oil in mass, slowly adding emulsified water at the stirring speed of 1500-1600 r/min until the emulsifier is completely dispersed in the vegetable oil until the emulsifier is phase-inverted, stopping adding the emulsified water, keeping stirring for 15min until the system is stable, continuously adding the rest emulsified water, wherein the total adding time of the emulsified water is 30min, increasing the stirring speed to 1700-1800 r/min after the emulsified water is completely added, stirring for 30min, adding deionized water, reducing the stirring speed to 1300-1400 r/min, stirring for 15min, and discharging to obtain the emulsified vegetable oil.

(3) Heating paraffin (liquid paraffin, solid paraffin with melting point lower than 60 ℃ and mass fractions of 60% and 40% respectively) to 90 +/-2 ℃, adding manganese sulfate as a catalyst accounting for 0.3% of the paraffin and stearic acid as an auxiliary agent accounting for 0.2% of the paraffin, stirring uniformly, raising the temperature to 110 +/-5 ℃, introducing oxygen to react for 60min to obtain oxidized paraffin containing hydroxyl, cooling to 80 +/-2 ℃, slowly adding high hydrogen-containing silicone oil to react for 40min to obtain the modified oxidized paraffin. And (3) slowly adding SP-60 accounting for 3% of the paraffin mass into the modified oxidized paraffin, uniformly stirring, adding emulsified water and deionized water according to the method (2), and discharging to obtain the phase change A component.

(4) Heating paraffin (liquid paraffin, solid paraffin with melting point below 60 deg.C 70% and solid paraffin 30% respectively) to 80 + -2 deg.C, adding gamma- (methacryloyloxy) propyl trimethoxy silane, vinyl trimethoxy silane and vinyl triethoxy silane, stirring, adding initiator benzoyl peroxide 2% of paraffin, and reacting for 210min to obtain modified paraffin. Slowly adding SP-60 accounting for 3% of the paraffin mass into the modified paraffin, uniformly stirring, adding emulsified water and deionized water according to the method (2), and discharging to obtain the phase change B component.

(5) Uniformly mixing 5 parts of phase change component A, 10 parts of phase change component B and 10 parts of emulsified vegetable oil, heating to 50 +/-2 ℃, adding 0.3 part of polyethylene glycol, 0.5 part of polyvinyl alcohol, 0.2 part of cellulose ether, 0.1 part of aqueous antirust agent and 0.1 part of composite mildew inhibitor, uniformly stirring, adding 0.5 part of polyamide wax, 1 part of fumed silica and 0.5 part of organic bentonite, adjusting the system to a thixotropic state at a stirring speed of 1700-1800 r/min, and discharging to obtain the phase change material.

Example 2

(1) Deionized water is heated to 40 +/-2 ℃, tween-20 accounting for 2 percent of the mass of the deionized water, OP-10 accounting for 1 percent of the mass of the deionized water, sodium dodecyl sulfate accounting for 1 percent of the mass of the deionized water and guar gum accounting for 0.3 percent of the mass of the deionized water are slowly added to prepare the emulsified water.

(2) Heating vegetable oil (70% and 30% of rapeseed oil and castor oil respectively in mass fraction) to 40 +/-2 ℃, slowly adding SP-65 accounting for 3% of the vegetable oil in mass, after an emulsifier is completely dispersed in the vegetable oil, slowly adding emulsified water under the condition of stirring speed of 1500-1600 r/min until emulsion phase inversion, stopping adding the emulsified water, keeping stirring for 15min until the system is stable, continuously adding the rest emulsified water, wherein the total time of adding the emulsified water is 30min, after the emulsified water is added, increasing the stirring speed to 1700-1800 r/min, stirring for 30min, adding deionized water, reducing the stirring speed to 1300-1400 r/min, stirring for 15min, and discharging to obtain the emulsified vegetable oil.

(3) Heating paraffin (liquid paraffin, solid paraffin with melting point lower than 60 ℃ and mass fractions of 70% and 30% respectively) to 90 +/-2 ℃, adding manganese sulfate as a catalyst accounting for 0.3% of the paraffin and stearic acid as an auxiliary agent accounting for 0.2% of the paraffin, stirring uniformly, raising the temperature to 110 +/-5 ℃, introducing oxygen to react for 60min to obtain oxidized paraffin containing hydroxyl, cooling to 80 +/-2 ℃, slowly adding high hydrogen-containing silicone oil to react for 40min to obtain the modified oxidized paraffin. Slowly adding SP-65 accounting for 3 percent of the paraffin mass into the modified oxidized paraffin, uniformly stirring, adding emulsified water and deionized water according to the method (2), and discharging to obtain the phase change A component.

(4) Heating paraffin (liquid paraffin, solid paraffin with melting point lower than 60 deg.C respectively 80% and 20%) to 80 + -2 deg.C, adding gamma- (methacryloyloxy) propyl trimethoxy silane and vinyl triethoxy silane, stirring, adding initiator benzoyl peroxide 2% of paraffin, and reacting for 210min to obtain modified paraffin. Slowly adding SP-65 accounting for 3 percent of the paraffin mass into the modified paraffin, uniformly stirring, adding emulsified water and deionized water according to the method (2), and discharging to obtain the phase change B component.

(5) Mixing 15 parts of phase change component A, 30 parts of phase change component B and 40 parts of emulsified vegetable oil uniformly, heating to 50 +/-2 ℃, adding 0.9 part of polyethylene glycol, 1.5 parts of polyvinyl alcohol, 0.6 part of cellulose ether, 0.3 part of aqueous antirust agent and 0.5 part of composite mildew preventive, stirring uniformly, adding 2.5 parts of polyamide wax, 5 parts of fumed silica and 2.5 parts of organic bentonite, adjusting the system to be in a thixotropic state at the stirring speed of 1700-1800 r/min, and discharging to obtain the composite phase change material.

Example 3

(1) Deionized water is heated to 40 +/-2 ℃, tween-40 accounting for 2 percent of the mass of the deionized water, OP-9 accounting for 1 percent of the mass of the deionized water, sodium dodecyl sulfate accounting for 1 percent of the mass of the deionized water and guar gum accounting for 0.3 percent of the mass of the deionized water are slowly added to prepare the emulsified water.

(2) Heating rapeseed oil to 40 +/-2 ℃, slowly adding SP-80 accounting for 3% of the mass of the rapeseed oil till an emulsifier is completely dispersed in the vegetable oil, slowly adding emulsified water under the condition of stirring speed of 1500-1600 r/min until the emulsion is in phase inversion, stopping adding the emulsified water, keeping stirring for 15min until the system is stable, continuously adding the rest emulsified water, adding the emulsified water for 30min, increasing the stirring speed to 1700-1800 r/min after the emulsified water is added, stirring for 30min, adding deionized water, reducing the stirring speed to 1300-1400 r/min, stirring for 15min, and discharging to obtain the emulsified rapeseed oil.

(3) Heating liquid paraffin to 90 +/-2 ℃, adding a catalyst manganese sulfate accounting for 0.3 percent of the mass of the liquid paraffin and 0.2 percent of an auxiliary agent stearic acid, uniformly stirring, heating to 110 +/-5 ℃, introducing oxygen to react for 60min to obtain oxidized paraffin containing hydroxyl, cooling to 80 +/-2 ℃, slowly reacting with high hydrogen-containing silicone oil for 40min to obtain the modified oxidized paraffin. And (3) slowly adding SP-80 accounting for 3% of the mass of the liquid paraffin into the modified oxidized paraffin, uniformly stirring, adding emulsified water and deionized water according to the method (2), and discharging to obtain the phase change component A.

(4) Heating liquid paraffin to 80 +/-2 ℃, adding gamma- (methacryloyloxy) propyl trimethoxy silane and vinyl trimethoxy silane, uniformly stirring, adding an initiator benzoyl peroxide accounting for 2% of the mass of the liquid paraffin, and reacting for 210min to obtain the modified paraffin. Slowly adding SP-80 accounting for 3% of the liquid paraffin into the modified paraffin, uniformly stirring, adding emulsified water and deionized water according to the method (2), and discharging to obtain the phase change B component.

(5) Mixing 10 parts of phase change component A, 20 parts of phase change component B and 25 parts of emulsified vegetable oil uniformly, heating to 50 +/-2 ℃, adding 1 part of polyethylene glycol, 1 part of polyvinyl alcohol, 0.2 part of aqueous antirust agent and 0.3 part of composite mildew inhibitor, stirring uniformly, adding 1 part of polyamide wax and 5 parts of fumed silica, adjusting the system to be in a thixotropic state at a stirring speed of 1700-1800 r/min, and discharging to obtain the phase change material.

Example 4

(1) Deionized water is heated to 40 +/-2 ℃, tween-40 accounting for 2 percent of the mass of the deionized water, OP-10 accounting for 1.5 percent of the mass of the deionized water, sodium dodecyl sulfate accounting for 0.5 percent of the mass of the deionized water and guar gum accounting for 0.3 percent of the mass of the deionized water are slowly added to prepare emulsified water.

(2) Heating vegetable oil (the weight fractions of rapeseed oil and palm oil are respectively 80% and 20%) to 40 +/-2 ℃, slowly adding SP-80 accounting for 3% of the vegetable oil by mass, after an emulsifier is completely dispersed in the vegetable oil, slowly adding emulsified water under the condition of stirring speed of 1500-1600 r/min until emulsion phase inversion, stopping adding the emulsified water, keeping stirring for 15min until the system is stable, continuously adding the rest emulsified water, wherein the total time of adding the emulsified water is 30min, after the emulsified water is added, increasing the stirring speed to 1700-1800 r/min, stirring for 30min, adding deionized water, reducing the stirring speed to 1300-1400 r/min, stirring for 15min, and discharging to obtain the emulsified vegetable oil.

(3) Heating the solid paraffin with the melting point lower than 60 ℃ to 90 +/-2 ℃, adding a catalyst manganese sulfate accounting for 0.3 percent of the mass of the solid paraffin and an auxiliary agent stearic acid accounting for 0.2 percent of the mass of the solid paraffin, uniformly stirring, heating to 110 +/-5 ℃, introducing oxygen to react for 60min to prepare oxidized paraffin containing hydroxyl, cooling to 80 +/-2 ℃, and slowly reacting with high hydrogen-containing silicone oil for 40min to prepare the modified oxidized paraffin. Slowly adding SP-65 accounting for 3% of the solid paraffin mass into the modified oxidized paraffin, uniformly stirring, adding emulsified water and deionized water according to the method (2), and discharging to obtain the phase change A component.

(4) Heating paraffin (liquid paraffin, solid paraffin with melting point lower than 60 deg.C, respectively 80% and 20%) to 80 + -2 deg.C, adding gamma- (methacryloyloxy) propyltrimethoxysilane, mixing, adding benzoyl peroxide as initiator 2% of paraffin, and reacting for 210min to obtain modified paraffin. And (3) slowly adding SP-60 accounting for 3% of the paraffin mass into the modified paraffin, uniformly stirring, adding emulsified water and deionized water according to the method (2), and discharging to obtain the phase change B component.

(5) Mixing 7.5 parts of phase change A component, 15 parts of phase change B component and 17.5 parts of emulsified vegetable oil uniformly, heating to 50 +/-2 ℃, adding 1.5 parts of polyvinyl alcohol, 0.15 part of aqueous antirust agent and 0.2 part of composite mildew preventive, stirring uniformly, adding 4 parts of fumed silica, adjusting the system to be in a thixotropic state at a stirring speed of 1700-1800 r/min, and discharging to obtain the phase change material.

Example 5

(1) Deionized water is heated to 40 +/-2 ℃, tween-20 accounting for 1 percent of the mass of the deionized water, OP-10 accounting for 2 percent of the mass of the deionized water, sodium dodecyl sulfate accounting for 1 percent of the mass of the deionized water and guar gum accounting for 0.3 percent of the mass of the deionized water are slowly added to prepare the emulsified water.

(2) Heating vegetable oil (60%, 10% and 30% of rapeseed oil, castor oil and palm oil respectively in mass fraction) to 40 +/-2 ℃, slowly adding SP-65 accounting for 3% of the vegetable oil in mass, slowly adding emulsified water under the condition of stirring speed of 1500-1600 r/min until the emulsifier is completely dispersed in the vegetable oil, stopping adding the emulsified water, keeping stirring for 15min until the system is stable, continuously adding the rest emulsified water, wherein the total time of adding the emulsified water is 30min, increasing the stirring speed to 1700-1800 r/min after the emulsified water is added, stirring for 30min, adding deionized water, reducing the stirring speed to 1300-1400 r/min, stirring for 15min, and discharging to obtain the emulsified vegetable oil.

(3) Heating paraffin (liquid paraffin, solid paraffin with melting point lower than 60 deg.C, respectively 50% and 50%) to 90 + -2 deg.C, adding manganese sulfate as catalyst 0.3% of paraffin and stearic acid as adjuvant 0.2%, stirring, heating to 110 + -5 deg.C, introducing oxygen to react for 60min to obtain oxidized paraffin containing hydroxyl, cooling to 80 + -2 deg.C, and slowly reacting with high hydrogen silicone oil for 40min to obtain modified oxidized paraffin. And (3) slowly adding SP-80 accounting for 3% of the paraffin mass into the modified oxidized paraffin, uniformly stirring, adding emulsified water and deionized water according to the method (2), and discharging to obtain the phase change A component.

(4) Heating paraffin (liquid paraffin, solid paraffin with melting point below 60 deg.C respectively 90% and 10%) to 80 + -2 deg.C, adding gamma- (methacryloyloxy) propyl trimethoxy silane, vinyl trimethoxy silane and vinyl triethoxy silane, stirring, adding initiator benzoyl peroxide 2% of paraffin, and reacting for 210min to obtain modified paraffin. Slowly adding SP-80 accounting for 3 percent of the paraffin mass into the modified paraffin, uniformly stirring, adding emulsified water and deionized water according to the method (2), and discharging to obtain the phase change B component.

(5) Uniformly mixing 12.5 parts of phase-change component A, 25 parts of phase-change component B and 32.5 parts of emulsified vegetable oil, heating to 50 +/-2 ℃, adding 0.5 part of polyethylene glycol, 1.5 parts of polyvinyl alcohol, 0.5 part of cellulose ether, 0.25 part of water-based antirust agent and 0.4 part of composite mildew inhibitor, uniformly stirring, adding 6 parts of fumed silica and 2 parts of organic bentonite, adjusting the system to a thixotropic state at the stirring speed of 1700-1800 r/min, and discharging to obtain the composite mildew inhibitor.

Example 6

(1) Deionized water is heated to 40 +/-2 ℃, tween-40 accounting for 1.5 percent of the mass of the deionized water, OP-10 accounting for 2 percent of the mass of the deionized water, sodium dodecyl sulfate accounting for 0.5 percent of the mass of the deionized water and guar gum accounting for 0.3 percent of the mass of the deionized water are slowly added to prepare emulsified water.

(2) Heating vegetable oil (40%, 30% and 30% of rapeseed oil, castor oil and palm oil respectively in mass fraction) to 40 +/-2 ℃, slowly adding SP-80 accounting for 3% of the vegetable oil in mass, slowly adding emulsified water at the stirring speed of 1500-1600 r/min until the emulsifier is completely dispersed in the vegetable oil until the emulsifier is phase-inverted, stopping adding the emulsified water, keeping stirring for 15min until the system is stable, continuously adding the rest emulsified water, wherein the total adding time of the emulsified water is 30min, increasing the stirring speed to 1700-1800 r/min after the emulsified water is added, stirring for 30min, adding deionized water, reducing the stirring speed to 1300-1400 r/min, stirring for 15min, and discharging to obtain the emulsified vegetable oil.

(3) Heating paraffin (liquid paraffin, solid paraffin with melting point lower than 60 ℃ and mass fractions of 65% and 35% respectively) to 90 +/-2 ℃, adding manganese sulfate as a catalyst accounting for 0.3% of the mass of the paraffin and stearic acid as an auxiliary agent accounting for 0.2%, uniformly stirring, raising the temperature to 110 +/-5 ℃, introducing oxygen to react for 60min to obtain oxidized paraffin containing hydroxyl, cooling to 80 +/-2 ℃, and slowly reacting with high hydrogen silicone oil for 40min to obtain the modified oxidized paraffin. And (3) slowly adding SP-80 accounting for 3% of the paraffin mass into the modified oxidized paraffin, uniformly stirring, adding emulsified water and deionized water according to the method (2), and discharging to obtain the phase change A component.

(4) Heating paraffin (liquid paraffin, melting point below 60 deg.C, and solid paraffin respectively 78% and 22%) to 80 + -2 deg.C, adding gamma- (methacryloyloxy) propyl trimethoxy silane, vinyl trimethoxy silane and vinyl triethoxy silane, stirring, adding initiator benzoyl peroxide 2% of paraffin, and reacting for 210min to obtain modified paraffin. Slowly adding SP-65 accounting for 3 percent of the paraffin mass into the modified paraffin, uniformly stirring, adding emulsified water and deionized water according to the method (2), and discharging to obtain the phase change B component.

(5) Mixing 6 parts of phase change component A, 22 parts of phase change component B and 30 parts of emulsified vegetable oil uniformly, heating to 50 +/-2 ℃, adding 0.7 part of polyethylene glycol, 0.5 part of polyvinyl alcohol, 0.5 part of cellulose ether, 0.12 part of water-based antirust agent and 0.36 part of composite mildew inhibitor, uniformly stirring, adding 0.5 part of polyamide wax, 4 parts of fumed silica and 3 parts of organic bentonite, adjusting the system to a thixotropic state at a stirring speed of 1700-1800 r/min, and discharging to obtain the phase change material.

The results of the performance tests of the temperature phase-change concrete release and curing integrated material provided in examples 1 to 6 and the release agent and curing agent commercially available in the comparative example are shown in the following table. The temperature-change demolding and curing integrated materials provided in examples 1 to 6 were directly coated on a mold, and after demolding of concrete, secondary coating was not performed, while in comparative example, a commercially available demolding agent was coated on the mold, and after demolding of concrete, a curing agent was coated on the surface of concrete. The release performance is tested according to the release agent for concrete products (JC/T949-.

The test result shows that the temperature phase change type concrete demolding and curing integrated material can realize that two procedures of concrete demolding and curing are completed by one-time painting, and the demolding effect and the curing effect are respectively equivalent to the effects of release agents and curing agents which are commercially available and have excellent quality.

Claims (7)

1. The utility model provides a temperature phase transition type concrete drawing of patterns maintenance integrated material which characterized in that: the material comprises the following raw materials in parts by weight: 10-40 parts of emulsified vegetable oil and 5-15 parts of a phase-change A component, wherein the phase-change A component is obtained by emulsifying high-hydrogen-content silicone oil modified hydroxyl-containing oxidized paraffin, the phase-change B component is 10-30 parts of silane coupling agent modified paraffin, and the phase-change B component is obtained by emulsifying the silane coupling agent modified paraffin, and comprises 1-3 parts of an adhesive, 2-10 parts of a thixotropic agent, 0.1-0.5 part of a composite mildew preventive and 0.1-0.3 part of a water-based antirust agent.

2. The temperature phase change type concrete demolding and curing integrated material as claimed in claim 1, wherein the temperature phase change type concrete demolding and curing integrated material comprises: the emulsified vegetable oil is one or more of emulsified rapeseed oil, emulsified castor oil and emulsified palm oil.

3. The temperature phase change type concrete demolding and curing integrated material as claimed in claim 1, wherein the temperature phase change type concrete demolding and curing integrated material comprises: the paraffin is one or two of liquid paraffin and solid paraffin with the melting point lower than 60 ℃.

4. The temperature phase change type concrete demolding and curing integrated material as claimed in claim 1, wherein the temperature phase change type concrete demolding and curing integrated material comprises: the silane coupling agent is one or more of gamma- (methacryloyloxy) propyl trimethoxy silane, vinyl trimethoxy silane and vinyl triethoxy silane.

5. The temperature phase change type concrete demolding and curing integrated material as claimed in claim 1, wherein the temperature phase change type concrete demolding and curing integrated material comprises: the adhesive is one or more of polyethylene glycol, polyvinyl alcohol and cellulose ether.

6. The temperature phase change type concrete demolding and curing integrated material as claimed in claim 1, wherein the temperature phase change type concrete demolding and curing integrated material comprises: the thixotropic agent is one or more of polyamide wax, fumed silica and organic bentonite.

7. The preparation method of the temperature phase-change type concrete demolding and curing integrated material as claimed in claims 1 to 6, wherein the preparation method comprises the following steps:

the first step is as follows: heating deionized water to a certain temperature, and adding a water-soluble emulsifier and guar gum serving as a stabilizer into the deionized water to prepare emulsified water;

the second step is that: heating vegetable oil to a certain temperature, adding an oil-soluble emulsifier into the vegetable oil until the emulsifier is completely dispersed in the vegetable oil, and adding emulsified water and deionized water under a high-speed stirring condition to prepare emulsified vegetable oil;

The third step: heating paraffin to a certain temperature, adding a catalyst manganese sulfate and an auxiliary agent stearic acid, stirring uniformly, introducing oxygen to react to prepare oxidized paraffin containing hydroxyl, cooling, slowly adding high-hydrogen-content silicone oil to react to prepare modified oxidized paraffin, adding an oil-soluble emulsifier to the modified oxidized paraffin, stirring uniformly, adding emulsified water and deionized water under a high-speed stirring condition, and preparing a phase change component A;

the fourth step: heating paraffin to a certain temperature, adding a silane coupling agent, uniformly stirring, adding an initiator benzoyl peroxide, reacting to obtain modified paraffin, slowly adding an oil-soluble emulsifier into the modified paraffin, uniformly stirring, and adding emulsified water and deionized water under the condition of high-speed stirring to obtain a phase-change component B;

the fifth step: uniformly mixing the phase change component A, the phase change component B and the emulsified vegetable oil, heating to a certain temperature, adding the adhesive, the water-based antirust agent and the composite mildew preventive, uniformly stirring, adding the thixotropic agent under the condition of high-speed stirring to adjust the system to a thixotropic state, and discharging to obtain the phase change anti-rust agent.