CN111138936A

CN111138936A - Transparent fireproof coating for historic building and preparation method thereof

Info

Publication number: CN111138936A
Application number: CN202010016135.2A
Authority: CN
Inventors: 郑钦文; 郑伟才; 张忠良; 王肖君
Original assignee: Jiangshan Muan New Material Technology Co Ltd
Current assignee: Jiangshan Muan New Material Technology Co Ltd
Priority date: 2020-01-08
Filing date: 2020-01-08
Publication date: 2020-05-12

Abstract

The invention relates to a transparent fireproof coating for historic buildings and a preparation method thereof, which are characterized in that: the mixing device can improve the mixing efficiency of the component A and the component B, ensure the production efficiency, and simultaneously, reasonably distribute the carbon source and the acid source in the fireproof coating, thereby meeting the fireproof protection requirement of the ancient wood building group.

Description

Transparent fireproof coating for historic building and preparation method thereof

Technical Field

The invention relates to the technical field of building materials, in particular to a transparent fireproof coating for historic buildings and a preparation method thereof.

Background

Materials used in buildings are collectively called building materials, which include structural materials, decorative materials, and special materials, etc., wherein the special materials refer to materials having special properties, such as: materials for waterproofing, moistureproof, anticorrosion, fireproof, soundproof, etc.;

the ancient buildings in villages in towns are many in China, the buildings are mostly wood structures, the buildings are very easy to have fire disasters once the fire disasters happen, and therefore, in order to protect the ancient buildings and avoid serious casualties and economic losses caused by the fire disasters, the method for coating the ancient buildings with a layer of fireproof coating is an effective method;

however, most of domestic fireproof coatings are solvent-added steel structure fireproof coatings, tunnel coatings and transparent fireproof coatings at present, organic solvents used in the fireproof coatings pollute the natural environment to a certain extent and harm human health to certain extent, and water-based fireproof coatings can overcome the problem of environmental pollution caused by solvent-based coatings. Therefore, the water-based transparent fireproof coating which is used on a wood base material, has excellent fireproof performance, weather resistance and other performance parameters, has no pollution to the natural environment and no harm to human health is developed, the original appearance of a building can be ensured, and the fireproof protection requirement of an ancient building can be met;

moreover, the existing equipment for preparing fire-proof materials mainly comprises a reaction device (such as a reaction kettle) and a filtering device, wherein the filtering device is mainly used for filtering impurities of raw materials, the reaction device plays a role in mixing and stirring the raw materials, and at present, the filtering device is usually arranged in the reaction device in order to improve the production efficiency, but when the filtering device is arranged in the reaction device, the filtering device is not easy to clean, so that the production efficiency is influenced.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a transparent fireproof coating for historic buildings and a preparation method thereof, and aims to solve the problems in the background technology.

The technical scheme of the invention is realized as follows: the transparent fireproof paint for the historic building is characterized in that: the material comprises, by weight, 20-50 parts of formaldehyde, 5-10 parts of melamine, 5-16 parts of urea, 0.5-10 parts of formic acid, 0.05-0.1 part of basic magnesium carbonate, 5-10 parts of triethanolamine, 20-30 parts of epoxy resin, 15-25 parts of 1, 2-butanediol glycidyl ether, 5-12 parts of dibromoneopentyl glycol, 5-30 parts of pentaerythritol, 10-25 parts of polyphosphoric acid, 3.5-10 parts of dibutyl phthalate, 10-16 parts of methanol, 10-16 parts of n-butyl alcohol, 1-4 parts of cyclohexane, 1-15 parts of ethylene glycol butyl ether, a proper amount of 10% sodium hydroxide and 1-10 parts of ammonium persulfate.

Preferably: 20-45 parts of formaldehyde, 10-25 parts of pentaerythritol, 1-10 parts of ethylene glycol monobutyl ether and 1-7 parts of ammonium persulfate.

Preferably: 20-40 parts of formaldehyde, 5-12 parts of pentaerythritol, 1-10 parts of ethylene glycol monobutyl ether and 1-5 parts of ammonium persulfate.

In addition, the invention also provides a preparation method of the transparent fireproof coating for the historic building, which is characterized by comprising the following steps:

(1) preparation of the component A: reacting the prepared formaldehyde, melamine, urea, triethanolamine, basic magnesium carbonate, formic acid, pentaerythritol, a sodium hydroxide solution, methanol and dipropylene glycol methyl ether in a reaction kettle for 2-4 hours at the temperature of 70-85 ℃ and the pH value of 4.5-9 to prepare a coating A component, and adding an impact strength promoter and a formaldehyde scavenger in the reaction process;

(2) b, preparation of a component: adding water into the prepared polyphosphoric acid, dibromoneopentyl glycol, n-butyl alcohol, epoxy resin, 1, 2-butanediol glycidyl ether, cyclohexane, dibutyl phthalate, formic acid, ammonium persulfate, trichloroethyl phosphate and ethylene glycol butyl ether, and reacting in a reaction kettle at the temperature of 120-150 ℃ to obtain a coating B component;

(3) mixing A \ B components: and (3) mixing the component A prepared in the step (1) and the component B prepared in the step (2) in a mixing device, and blending uniformly to finish the preparation.

Preferably: mixing arrangement includes the cavity mixture that sets up, locates just through motor drive's agitating unit, locate in the mixture just be located agitating unit goes up and down and can drive partial material and rise and reposition of redundant personnel exhaust filter equipment, install in but mixture top inner wall and longitudinal extension partially insert in the filter equipment and extrude the extrusion module of material and be used for control the numerical control module of cylinder and extrusion module operation.

Preferably: the filtering device comprises a driving disc which is arranged in the mixing body, is circular in shape and is lifted through an air cylinder, two circles of circular feed inlets which are arranged on the driving disc in a staggered manner, and a plurality of filters which are fixedly connected to the circular feed inlets respectively and extend longitudinally; wherein, each filter all includes fixed connection circular feed inlet department and cavity setting and one end with the body of circular feed inlet intercommunication and densely distributed in the body lateral wall just rather than the filtration pore of inside intercommunication.

Preferably: the extrusion module comprises an installation plate fixedly connected between the inner side walls of the mixture, a plurality of extrusion shafts which are rotatably connected to the bottom of the installation plate and are in one-to-one correspondence with the circular feed inlets and driven by a first motor, extrusion strips which are arranged on the outer side walls of the extrusion shafts and extend circumferentially and spirally, and a brushing part arranged on the extrusion strips; the brushing part comprises a plurality of blind holes which are distributed on the outer wall of one side of the extrusion strip, far away from the extrusion shaft, and are distributed at equal intervals along the extension direction of the extrusion strip, an annular fixed block which is rotatably connected between the inner side walls of the blind holes through cylindrical pins, and a brushing strip which is fixedly connected to the annular fixed block, extends towards the bottom of the blind hole and the orifice of the blind hole at two ends respectively, and partially exposes out of the orifice of the blind hole.

Preferably: the numerical control module comprises a first air pump used for pumping air from the air cylinder, a second air pump used for supplying air to the inside of the air cylinder, a second motor and a third motor which are respectively used for driving the first air pump and the second air pump to work, a first controller, a second controller and a third controller which are respectively used for controlling the first motor to work, the second motor and the third motor to work, and a central control unit which is respectively electrically connected with the first controller, the second controller and the third controller and respectively drives the first controller, the second controller and the third controller to control the first motor, the second motor and the third motor to work through a preset numerical control program.

Preferably: the numerical control program comprises the following steps:

the first step is as follows: presetting the rotation speed of a first motor as R1, and driving the actual rotation speed of the first motor to be R2-R1;

the second step is that: controlling a second motor to drive a first air pump to pump air to the air cylinder in a forward rotating speed of R3;

the third step: detecting whether the actual rotating speed R2 of the first motor is greater than or equal to R1;

the fourth step: if the conditions in the third step are not satisfied, returning to the second step; if the condition of the third step is met, reducing the rotating speed of the second motor to R4, and maintaining the working condition;

the fifth step: detecting whether the actual rotating speed R2 of the first motor is equal to 0 or not;

and a sixth step: if the conditions in the fifth step are not satisfied, returning to the fourth step; if the condition in the fifth step is satisfied, controlling the second motor to stop, driving the third motor to control the second air pump to supply air to the air cylinder in a mode that the reverse rotation speed is R5, enabling R5 to be R4, and enabling the first motor to rotate reversely in the air supply process of the second air pump;

the seventh step: detecting whether the actual rotating speed R2 < R1 of the first motor is established;

eighth step: if the conditions in the seventh step are met, returning to the sixth step; if the condition of the seventh step is not satisfied, the reverse rotation speed of the third motor is increased, so that R5 is more than or equal to R3, and the reverse rotation of the first motor is maintained for 5 s.

Preferably: the stirring device comprises a transmission shaft which penetrates into the mixing body from the bottom of the mixing body and is driven by a fourth motor, and a stirring part fixedly connected to the free end of the transmission shaft; the stirring part comprises a plurality of stirring bodies which are fixedly connected with the transmission shaft through connecting shafts, are circular and are concentrically arranged.

By adopting the technical scheme: the melamine formaldehyde resin synthesized by the antique building transparent fireproof coating is a film forming agent of the coating, and is an air source and a carbon source of the fireproof coating; an organic phosphate flame-retardant system synthesized by pentaerythritol and dibromo neopentyl glycol polyphosphoric acid is added in the synthesis of the coating to form a carbon source and an acid source of the fireproof coating; through a large amount of experimental researches and series of actual performance parameter tests, the fireproof coating has excellent fireproof performance and construction process performance, and can completely meet the fireproof protection requirements of ancient wood building groups;

in addition, the invention also improves the production process, thereby not only ensuring the filtering effect of each component, but also improving the filtering efficiency, and further improving the efficiency of producing the transparent fireproof coating for the historic building.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a mixing apparatus in accordance with an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of an extruded strip in an embodiment of the present invention; (ii) a

Fig. 3 is a block diagram of a numerical control program according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

As shown in tables 1-2, the transparent fireproof paint for the historic building is characterized in that: the formaldehyde-free and anti-blocking agent comprises 57.2kg of formaldehyde, 6kg of melamine, 12.8kg of urea, 10kg of formic acid, 0.17kg of basic magnesium carbonate, 4.3kg of triethanolamine, 24.7kg of epoxy resin, 12.5kg of 1, 2-butanediol glycidyl ether, 6.3kg of dibromo neopentyl glycol, 5.6kg of pentaerythritol, 22.6kg of polyphosphoric acid, 2kg of dibutyl phthalate, 18kg of methanol, 12.5kg of n-butyl alcohol, 4kg of cyclohexane, 2kg of ethylene glycol butyl ether, 10kg of 10% sodium hydroxide and 2kg of ammonium persulfate.

TABLE 1 formula of transparent fireproof paint A for ancient buildings

Name of Material	Classification	Mass kg
			Formaldehyde (I)	Carbon source	57.2
Melamine	Gas source	6
			Urea	Carbon source	12.8
Triethanolamine	Penetration aid	4.3
			Basic magnesium carbonate	Catalyst and process for preparing same	0.17
Formic acid	PH regulator	3
			Pentaerythritol	Carbon source	5.6
Sodium hydroxide solution	PH regulator	4
			Methanol	Etherifying agent	8
Dipropylene glycol methyl ether	Film forming aid	3
			Impact strength promoters (aminopropyl trimethyl oxysilane)	Auxiliary agent	1.5
Formaldehyde scavenger	Auxiliary agent	5

TABLE 2 formula of B component of transparent fireproof paint for ancient buildings

Name of Material	Classification	Mass kg
			Polyphosphoric acid	Acid source	22.6
Dibromo neopentyl glycol	Carbon source	6.3
			N-butanol	Carbon source	12.5
Epoxy resin	Film forming agent	24.7
			1, 2-butanediol glycidyl Ether	Auxiliary agent	12.5
Cyclohexane	Water-carrying agent	4
			Dibutyl phthalate	Plasticizer	2
Formic acid	Curing agent	1.5
			Ammonium persulfate	Curing agent	2
Trichloroethyl phosphate	Flame retardant	5
			Ethylene glycol butyl ether	Whitening preventive	2
Water (W)	Solvent(s)	5

In this example 1 part may be 1.5 kg.

Example 2

As shown in figures 1-3, the invention discloses a preparation method of a transparent fireproof coating for historic buildings, and in the specific embodiment of the invention, the preparation method of the component A comprises the following steps:

1.1, accurately weighing 57.2kg of formaldehyde, adding the formaldehyde into a reaction kettle from a feed inlet of a No. 1 reaction kettle (or starting a vacuum pump to pump the formaldehyde into the reaction kettle), simultaneously adding 0.17kg of basic magnesium carbonate, pressing a stirring button to start stirring, and starting a circulating cooling water system;

1.2, after stirring the No. 1 reaction kettle for 5 minutes, adding 0.7kg of 50% formic acid solution into the reaction kettle, stirring for 5 minutes, opening a discharge port valve of the reaction kettle, discharging a little liquid, measuring the pH value of the liquid in the kettle by using a pH test paper, if the pH value is greater than 6.5, adding a proper amount of 50% formic acid solution, continuously stirring for 3-5 minutes, then opening the discharge port valve of the reaction kettle, discharging a little liquid, measuring the pH value of the liquid in the kettle by using the pH test paper, and controlling the pH value to be within the range of 5.5-6.5;

1.3, uniformly mixing 12.8kg of urea, 6kg of melamine and 5.6kg of pentaerythritol, and adding the mixture into a reaction kettle from a feed inlet of a No. 1 reaction kettle;

1.4, setting a temperature control system to be 70 ℃, and opening a heating switch of a reaction kettle No. 1 to ensure that the oil temperature slowly rises to 70 ℃;

1.5, opening a discharge port valve at the lower end of the reaction kettle after a thermometer on the reaction kettle reaches 70 ℃ for about 40 minutes, discharging a little reaction material into a beaker, and observing whether the liquid is transparent; if the liquid is in a white opaque state, continuing the reaction until the liquid is in a transparent state;

1.6, when the reaction solution is transparent, adding 4.3kg of triethanolamine and 1kg of epichlorohydrin;

and 1.7, after 5 minutes of feeding, opening a discharge port valve of the reaction kettle, discharging a little liquid, measuring the pH value of the liquid in the kettle by using a pH test paper, continuing the reaction if the pH value is within 8-9, adding a proper amount of 10% NaOH solution if the pH value is less than 8, stirring for 3-5 minutes, measuring the pH value, and adjusting the pH value to be within 8-9.

1.8, setting a temperature control system to be 80 ℃, adding 8kg of methanol into the reaction kettle for 4 times, wherein the interval time is 10 minutes every time, when the temperature of a 1# reaction kettle top thermometer reaches 80 ℃, timing is started after the addition of the n-butyl alcohol is finished, and a reaction kettle heating switch is closed after 3 hours;

1.9, opening a top emptying valve and a bottom and 2# reaction kettle connecting valve of the 1# reaction kettle, starting a 2# reaction kettle feeding pump, and feeding the 1# reaction kettle material into the 2# reaction kettle. Closing the emptying valve of the No. 1 reaction kettle and the valve connected with the No. 2 reaction kettle; starting a stirring switch of the 2# reaction kettle and a vacuum pump switch, setting the pressure of the vacuum pump at-0.1 MPa, continuing for 2 hours, closing the vacuum pump (if the temperature of the 2# reaction kettle is lower than 50 ℃, setting a heating system at 50 ℃), adding 1.5kg of impact strength accelerant and 3kg of dipropylene glycol methyl ether, and continuing stirring for 10 minutes;

1.10, taking a little of the composition out of the 1.9, analyzing the content of residual formaldehyde according to a fireproof coating residual formaldehyde analysis process, adding a proper amount of formaldehyde catching agent into a No. 2 reaction kettle according to the content of the formaldehyde, continuously stirring for 10 minutes, completing the preparation of the component A, opening an emptying valve and a discharge port valve at the upper part of the No. 2 reaction kettle, starting a feeding pump, and feeding the prepared component A into a mixing device;

in the specific embodiment of the invention, the preparation method of the component B comprises the following steps:

2.1, weighing 22.6kg of phosphoric acid, 12.5kg of n-butanol and 4kg of cyclohexane, adding the phosphoric acid, the n-butanol and the cyclohexane into a reaction kettle through a feed pump or a feed inlet of a No. 3 reaction kettle, starting a stirring switch of the reaction kettle to start stirring, and weighing 6.3kg of dibromoneopentyl glycol, and adding the dibromoneopentyl glycol into the reaction kettle from the feed inlet of the reaction kettle;

2.2, setting the temperature of the temperature control system to be 150 ℃, opening a temperature rising switch of the reaction kettle to start rising temperature, simultaneously opening a switch of a condensed water circulating system, starting timing when the temperature of a thermometer on the reaction kettle rises to 150 ℃, and closing a heating switch of the reaction kettle, a stirring switch and a condensed water switch after reacting for 1 h;

2.3, sequentially opening a top emptying valve of the reaction kettle and a connecting valve of the lower end of the reaction kettle and the No. 4 heat preservation kettle, starting a vacuum feeding pump switch, pumping the material in the No. 3 reaction kettle into the No. 4 heat preservation kettle, closing the top emptying valve of the No. 3 reaction kettle and the connecting valve of the lower end of the reaction kettle and the No. 4 heat preservation kettle, starting a stirring switch of the No. 4 heat preservation kettle, and starting stirring;

2.4, accurately weighing 12.5kg of 1, 2-butanediol glycidyl ether, 24.7kg of epoxy resin E-51 and 2kg of dibutyl phthalate, stirring and dispersing uniformly, adding the mixture into a kettle from a feeding port of a No. 4 heat preservation kettle for 3 times, wherein the feeding interval is not less than 5 minutes;

2.5, if the material conveyed by the 3# reaction kettle is at normal temperature, starting a heating switch of the heat preservation kettle, raising the temperature to 55 ℃, preserving the heat for 3 hours (if the material conveyed by the 3# reaction kettle is just synthesized, the heating is not needed), and then closing the heating switch;

2.6, dissolving 2kg of sodium persulfate in 5kg of water, simultaneously adding 1.5kg of formic acid and 5kg of trichloroethyl phosphate, uniformly stirring, adding the mixture into a No. 4 heat-preservation kettle, stirring for 10 minutes to form a component B, starting a vacuum feeding pump switch, and feeding the synthesized component B into a mixing device;

in the specific embodiment of the present invention, the mixing device includes a hollow mixture 60, a stirring device 62 disposed in the mixture 60 and driven by a fourth motor 61, a filtering device 64 disposed in the mixture 60 and located on the stirring device 62 and lifted by a cylinder 63 and capable of driving a part of the material to ascend and discharge in a shunting manner, an extruding module 65 mounted on an inner wall of a top of the mixture 60 and extending longitudinally and capable of partially inserting into the filtering device 64 and extruding the material, and a numerical control module for controlling the operation of the cylinder 63 and the extruding module 65.

In the embodiment of the present invention, the filtering device 62 includes a driving disc 620 disposed in the mixing body 60 and having a "circular" shape and lifted by the cylinder 63, two circles of circular feeding holes 621 disposed on the driving disc 620 and staggered with each other, and a plurality of longitudinally extending filters 622 fixedly connected to the circular feeding holes 621 respectively; each filter 622 comprises a pipe body 6220 fixedly connected to the circular feed port 621, arranged in a hollow manner and having one end communicated with the circular feed port 621, and filter holes 6221 densely distributed on the outer side wall of the pipe body 6220 and communicated with the inside of the pipe body.

In the embodiment of the present invention, the extrusion module 65 includes a mounting plate 650 fixedly connected between the inner side walls of the mixing body 60, a plurality of extrusion shafts 652 rotatably connected to the bottom of the mounting plate 650 and corresponding to the circular feed ports 621 one by one and driven by a first motor 651, an extrusion bar 653 disposed on the outer side wall of the extrusion shaft 652 and extending spirally in the circumferential direction, and a brushing part 654 disposed on the extrusion bar 653; the brushing part 654 comprises a plurality of blind holes 6540 distributed on the outer wall of the extrusion bar 653 on one side far from the extrusion shaft 652 and distributed at equal intervals along the extension direction of the extrusion bar 653, an annular fixing block 6542 rotatably connected between the inner side walls of the blind holes 6540 through cylindrical pins 6541, and a brush strip 6543 fixedly connected to the annular fixing block 6542 and having two ends respectively extending towards the bottom of the blind hole 6540 and the opening of the blind hole 6540 and partially exposing the opening of the blind hole 6540.

In an embodiment of the present invention, the numerical control module includes a first air pump 661 for pumping air into the air cylinder 63, a second air pump 662 for supplying air into the air cylinder 63, a second motor 663 and a third motor 664 for respectively driving the first air pump 661 and the second air pump 662 to operate, a first controller 665, a second controller 666 and a third controller 667 for respectively controlling the first motor 651 to operate, the second motor 663 and the third motor 664 to operate, and a central control unit 668 electrically connected to the first controller 665, the second controller 666 and the third controller 667 and respectively driving the first controller 665, the second motor 663 and the third motor 664 to operate through a preset numerical control program.

In a specific embodiment of the present invention, the numerical control program includes the following steps:

the first step is as follows: presetting the rotation speed of a first motor as R1-1000 rpm, and driving the actual rotation speed of the first motor to reach R2-1000 rpm;

the second step is that: controlling a second motor to drive a first air pump to pump air into the air cylinder in a mode that the forward rotating speed is 2000rpm instead of R3;

the fourth step: if the conditions in the third step are not satisfied, returning to the second step; if the condition of the third step is met, reducing the rotating speed of the second motor to R4 being 500rpm, and maintaining the working condition;

In the embodiment of the present invention, the stirring device 62 includes a driving shaft 620 penetrating into the mixing body 60 from the bottom of the mixing body 60 and driven by a fourth motor 61, and a stirring part 621 fixedly connected to the free end of the driving shaft 620; the stirring part 621 comprises a plurality of stirring bodies 6211 which are fixedly connected with the transmission shaft 620 through connecting shafts 6210, are circular in shape and are concentrically arranged.

In the embodiment of the present invention, a sewage frame 70 is disposed in the mixing body 60 below the filtering device, and a sewage outlet 71 communicated with the sewage frame 70 is disposed on an outer sidewall of the mixing body 60.

By adopting the technical scheme:

in more detail:

referring to fig. 1 to 3, in order to improve the mixing efficiency of the component a and the component B, in this embodiment, a preset numerical control program is used to clean the filtering device, and the extrusion module reverses itself to throw impurities into the sewage discharge frame and discharge the impurities through the sewage discharge outlet;

namely: under the condition of normal production, the prepared component A and the component B are respectively added into a mixing device, the component A and the component B respectively enter a pipe body through circular feed inlets, are discharged through filter holes formed in the pipe body and enter the bottom of a mixture, and then a fourth motor is used for driving a stirring part to stir the component A and the component B, so that the preparation is finished;

in order to improve the stirring efficiency of the component A and the component B, a plurality of stirring bodies with the shapes as circle centers are arranged on the transmission shaft, and when the transmission shaft rotates, materials with different horizontal heights in the mixture can be stirred by the stirring bodies, so that the mixing efficiency of the component A and the component B is improved;

when the filter filters the component A and the component B, the component A or the component B blocks each filter hole, and at the moment, the central control unit is started and runs each component by utilizing a preset numerical control program; namely:

firstly, presetting the rotation speed of a first motor (for example, 1000rpm) in a central control unit, driving the extrusion shaft to reach 1000rpm through the first motor, driving a second motor to rotate positively after the step is finished, controlling the first air pump to pump air in the air cylinder, so that the output end (for example, a piston) of the air cylinder contracts, further a driving disc ascends, and further the extrusion shaft moves towards the direction of the pipe body rapidly, when the rotation speed of the extrusion shaft is reduced, the extrusion shaft is in contact with the pipe body, at the moment, the ascending speed of the output end of the air cylinder can be reduced, further the ascending speed of the driving disc is reduced, further the extrusion shaft slowly enters the pipe body, and the inner side wall of the pipe body is scrubbed by using a brush strip arranged on the outer side wall of the extrusion shaft, so that the filter hole is prevented from being blocked, when the actual rotation speed of the first motor is detected to be 0, the extrusion shaft, the central control unit receives the rotating speed signal of the first motor and feeds back the rotating speed signal to the second motor and the third motor, namely: when the reverse rotation speed of the first motor is greater than or equal to R1, the extrusion shaft is separated from the tank body, the rotation of the third motor is promoted at the moment, rapid air supply is carried out in the cylinder, the descending speed of the driving disc is accelerated, impurities on the brush strip are thrown away by turning over the extrusion shaft, and part of the impurities are thrown into a pollution discharge frame and are discharged by a pollution discharge port;

when the extrusion shaft is in the pipe body, the lifting speed of the air cylinder is low, so that the collision between the pipe body and the extrusion shaft can be avoided, and the use effects of the pipe body and the extrusion shaft are ensured;

it should be noted that:

this embodiment utilizes extrusion device to scrub the body, can guarantee that the filtration pore is not blockked up, and then guarantee the filter effect to A component or B component, and then production efficiency, and utilize the cylindric lock to realize the rotation of annular fixed block and blind hole inside wall, when the brush strip is scrubbed the inside wall of body, can avoid the brush strip to appear the condition of damaging because of the difficult adjustment in position, thereby guarantee the life of brush strip, moreover, because annular fixed block rotates with the blind hole to be connected, when extrusion axle forward rotation and reversal rotation, the orientation of self can be changed to the brush strip, and locate each brush strip on the extrusion strip of spiral extension, thereby can improve the effect of scrubbing to the internal lateral wall of body, and then further guarantee the production efficiency of this embodiment.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The transparent fireproof paint for the historic building is characterized in that: the material comprises, by weight, 20-50 parts of formaldehyde, 5-10 parts of melamine, 5-16 parts of urea, 0.5-10 parts of formic acid, 0.05-0.1 part of basic magnesium carbonate, 5-10 parts of triethanolamine, 20-30 parts of epoxy resin, 15-25 parts of 1, 2-butanediol glycidyl ether, 5-12 parts of dibromoneopentyl glycol, 5-30 parts of pentaerythritol, 10-25 parts of polyphosphoric acid, 3.5-10 parts of dibutyl phthalate, 10-16 parts of methanol, 10-16 parts of n-butyl alcohol, 1-4 parts of cyclohexane, 1-15 parts of ethylene glycol butyl ether, a proper amount of 10% sodium hydroxide and 1-10 parts of ammonium persulfate.

2. The transparent fireproof paint for ancient buildings according to claim 1, wherein: the formaldehyde is 20-45 parts, the pentaerythritol is 10-25 parts, the ethylene glycol monobutyl ether is 1-10 parts, and the ammonium persulfate is 1-7 parts.

3. The transparent fireproof paint for ancient buildings according to claim 1, wherein: the formaldehyde is 20-40 parts, the pentaerythritol is 5-12 parts, the ethylene glycol monobutyl ether is 1-10 parts, and the ammonium persulfate is 1-5 parts.

4. The preparation method of the transparent fireproof paint for the historic building according to claim 1, is characterized by comprising the following steps:

5. The preparation method of the transparent fireproof paint for the historic building according to claim 4, wherein the preparation method comprises the following steps: mixing arrangement includes the cavity mixture that sets up, locates just through motor drive's agitating unit, locate in the mixture just be located agitating unit goes up and down and can drive partial material and rise and reposition of redundant personnel exhaust filter equipment, install in but mixture top inner wall and longitudinal extension partially insert in the filter equipment and extrude the extrusion module of material and be used for control the numerical control module of cylinder and extrusion module operation.

6. The preparation method of the transparent fireproof paint for the historic building according to claim 5, wherein the preparation method comprises the following steps: the filtering device comprises a driving disc which is arranged in the mixing body, is circular in shape and is lifted through an air cylinder, two circles of circular feed inlets which are arranged on the driving disc in a staggered manner, and a plurality of filters which are fixedly connected to the circular feed inlets respectively and extend longitudinally; wherein, each filter all includes fixed connection circular feed inlet department and cavity setting and one end with the body of circular feed inlet intercommunication and densely distributed in the body lateral wall just rather than the filtration pore of inside intercommunication.

7. The preparation method of the transparent fireproof paint for the historic building according to claim 6, wherein the preparation method comprises the following steps: the extrusion module comprises an installation plate fixedly connected between the inner side walls of the mixture, a plurality of extrusion shafts which are rotatably connected to the bottom of the installation plate and are in one-to-one correspondence with the circular feed inlets and driven by a first motor, extrusion strips which are arranged on the outer side walls of the extrusion shafts and extend circumferentially and spirally, and a brushing part arranged on the extrusion strips; the brushing part comprises a plurality of blind holes which are distributed on the outer wall of one side of the extrusion strip, far away from the extrusion shaft, and are distributed at equal intervals along the extension direction of the extrusion strip, an annular fixed block which is rotatably connected between the inner side walls of the blind holes through cylindrical pins, and a brushing strip which is fixedly connected to the annular fixed block, extends towards the bottom of the blind hole and the orifice of the blind hole at two ends respectively, and partially exposes out of the orifice of the blind hole.

8. The preparation method of the transparent fireproof paint for the historic building according to claim 7, wherein the preparation method comprises the following steps: the numerical control module comprises a first air pump used for pumping air from the air cylinder, a second air pump used for supplying air to the inside of the air cylinder, a second motor and a third motor which are respectively used for driving the first air pump and the second air pump to work, a first controller, a second controller and a third controller which are respectively used for controlling the first motor to work, the second motor and the third motor to work, and a central control unit which is respectively electrically connected with the first controller, the second controller and the third controller and respectively drives the first controller, the second controller and the third controller to control the first motor, the second motor and the third motor to work through a preset numerical control program.

9. The method for preparing the transparent fireproof paint for the historic building according to claim 8, wherein the numerical control program comprises the following steps:

10. The preparation method of the transparent fireproof paint for the historic building according to any one of claims 5 to 9, wherein the transparent fireproof paint comprises the following steps: the stirring device comprises a transmission shaft which penetrates into the mixing body from the bottom of the mixing body and is driven by a fourth motor, and a stirring part fixedly connected to the free end of the transmission shaft; the stirring part comprises a plurality of stirring bodies which are fixedly connected with the transmission shaft through connecting shafts, are circular and are concentrically arranged.