CN114958066B

CN114958066B - Waterproof putty and preparation method thereof

Info

Publication number: CN114958066B
Application number: CN202210640700.1A
Authority: CN
Inventors: 钱国林
Original assignee: Zhejiang Bilingbao Building Material Technology Co ltd
Current assignee: Zhejiang Bilingbao Building Material Technology Co ltd
Priority date: 2022-06-08
Filing date: 2022-06-08
Publication date: 2023-03-21
Anticipated expiration: 2042-06-08
Also published as: CN114958066A

Abstract

The invention provides waterproof putty and a preparation method thereof, and the waterproof putty comprises the following raw materials in parts by weight: 8-15 parts of sierozem powder; 5-10 parts of heavy calcium carbonate; 3-7 parts of talcum powder; 8-15 parts of elastic acrylic emulsion; 10-15 parts of inelastic acrylic emulsion; 20-35 parts of composite phase change material; 3-8 parts of a sealing agent; 2-5 parts of starch; 1-3 parts of an auxiliary agent; 5-20 parts of water, the water-resistant putty and the preparation method thereof can improve the deformation resistance and the bonding strength of the water-resistant putty and improve the water resistance of the water-resistant putty.

Description

Waterproof putty and preparation method thereof

Technical Field

The invention relates to the field of building materials, in particular to waterproof putty and a preparation method thereof.

Background

The putty is a surface filling material for pretreating a construction surface before paint construction, and the aim of batch putty is to fill pores of the construction surface and correct curve deviation of the construction surface, so that the putty has good bonding strength and water resistance so as to ensure that phenomena of hollowing, peeling, cracking and the like cannot occur under long-term erosion of water vapor in air, can be tightly combined with a base material, and plays a good role in decoration and protection.

The waterproof putty is high in bonding strength, good in water resistance, and has certain toughness and air permeability. In the existing waterproof putty, on one hand, waterproof is realized by generating a waterproof layer through the reaction of components such as ash calcium powder in a base material and the like with water, on the other hand, the waterproof additive is added, such as epoxy resin, silicone-acrylic resin, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl methyl cellulose, cellulose acetate and the like to improve the waterproof property of the waterproof putty, so that the excellent bonding strength and waterproof property of the waterproof putty can be realized, water vapor is difficult to permeate the waterproof putty layer, and the waterproof putty is found in the actual use process: the water seepage phenomenon still appears in the water-resistant putty layer, and the reason for the water seepage phenomenon mainly comprises the following two aspects:

firstly, base materials of batch putty, such as plasterboards, walls and the like, deform due to stress concentration or foundation collapse and the like, the deformation causes cracks on a putty layer coated on the base materials, and water vapor and the like penetrate through the waterproof putty layer through the cracks to cause the water resistance of the waterproof putty layer to be reduced or lost;

secondly, the batch-scraped putty layer has cracks due to the expansion caused by heat and the contraction caused by cold of the self material, especially when the thickness of the putty layer is too thick, the phenomenon is more obvious, and water vapor and the like penetrate through the waterproof putty layer through the cracks to cause the water resistance of the waterproof putty layer to be reduced or even lost.

Disclosure of Invention

The invention designs a waterproof putty and a preparation method thereof, which aim to overcome the technical problem that the existing waterproof putty is easy to crack and cause the reduction of water resistance.

In order to solve the problems, the invention discloses a waterproof putty which comprises the following raw materials in parts by weight:

further, the composite phase change material is wood fiber filled with phase change particles.

Further, the sealing agent is one or more of rosin resin, acrylic resin, lignin modified phenolic resin, rosin pentaerythritol ester, polyamide resin, polycaprolactone and hydroxy acrylic resin.

Further, the auxiliary agent comprises the following components in parts by weight:

a preparation method of water-resistant putty is used for preparing the water-resistant putty and comprises the following steps:

s1, preparing a composite phase-change material: cutting wood, steaming at high temperature, performing high-pressure micro-blasting treatment on the wood, and filling phase change components into the wood subjected to micro-blasting treatment to obtain a composite phase change material;

s2, micropore sealing treatment in the composite phase-change material: filling a sealing agent into the composite phase change material obtained in the step S1 under a certain pressure, and sealing micropores in the composite phase change material;

s3, treating the outer surface of the composite phase change material: coating starch on the composite phase change material subjected to micropore sealing treatment at normal pressure;

s4: preparing water-resistant putty: and (3) mixing the base material, the slurry, the auxiliary agent and water with the composite phase change material treated in the step (S3), and uniformly stirring to obtain the waterproof putty.

Further, the step S1 includes:

s11, preparing materials: selecting 1-3 years old broad-leaved wood as a raw material, and peeling the broad-leaved wood for later use;

s12, cutting: cutting the wood treated in the step S11 into wood chips with the thickness of 1-3 cm;

s13, cooking: the wood chips are steamed and boiled for 2 to 5 hours under the conditions of the temperature of 140 to 160 ℃ and the air pressure of 0.5 to 0.7 MPa;

s14, refining: fishing out the cooked wood chips, and putting the wood chips into a pulping machine for pulping, wherein the working concentration of the pulping machine is 15-45%, and wood fibers with the beating degree of 10-30 DEG SR are obtained after pulping;

s15, draining: placing the material discharged by the pulping machine on a screen mesh, and draining off water for later use;

s16, high-pressure micro blasting: placing the drained wood fiber in a high-pressure kettle, keeping the wood fiber under the air pressure of 2-3 MPa for 3-5 h, and quickly relieving pressure to obtain the wood fiber subjected to high-pressure micro-blasting;

s17, filling phase change components: and (2) putting the phase change component into a high-pressure autoclave, uniformly mixing the phase change component with the wood fiber subjected to high-pressure micro-blasting, keeping the pressure of the phase change component at 0.5-1 MPa for 0.2-1 h, filling the phase change component into the wood subjected to micro-blasting under the action of pressure to form phase change particles, and reducing the pressure of the high-pressure autoclave to 0.2-0.3 MPa at a constant speed within 3-5 min to obtain the composite phase change material.

Further, the step S2 includes: and (2) placing the sealing agent into a high-pressure kettle, uniformly mixing the sealing agent with the composite phase-change material obtained by the step (S1), keeping the pressure of the sealing agent at 0.2-0.3 MPa for 0.3-0.5 h, and reducing the pressure of the high-pressure kettle to normal pressure at a constant speed to obtain the composite phase-change material subjected to micropore sealing treatment.

Further, the autoclave comprises:

a rotating section, wherein an inner chamber is arranged in the rotating section;

the rotating section is rotatably connected with the fixed section;

set up the partition valve in the rotatory section, the partition valve will interior cavity separates and forms first interior chamber and second interior chamber, first interior chamber and second interior chamber pass through the state switching realization of partition valve is connected or is disconnected.

Further, the partition valve includes:

the valve seat is fixedly arranged in the inner cavity and is of a hollow structure;

the valve plate is clamped in the inner cavity and provided with a connecting hole, and the connecting hole is a through hole;

one end of the connecting piece is fixedly connected with the valve seat, and the other end of the connecting piece is clamped in the connecting hole and seals the connecting hole;

when the valve seat and the valve plate are clamped together through the connecting piece, the separating valve separates a first inner chamber and a second inner chamber on two sides of the separating valve, so that the first inner chamber and the second inner chamber are in a disconnected state;

when the connecting piece is pulled out from the connecting hole, the first inner chamber and the second inner chamber are in a communication state.

Further, the fixing section includes: the first fixed section and the second fixed section are oppositely arranged at two ends of the rotating section, and the first fixed section and the second fixed section are respectively rotatably connected with the rotating section;

the first fixed section is provided with: the output shaft of the driving motor is connected with the transmission gear; correspondingly, a gear ring is arranged on the outer wall of the rotating section and is meshed with the transmission gear;

the hydraulic telescopic driving element, the hydraulic telescopic rod and the piston are sequentially connected and arranged in the second fixing section, the hydraulic telescopic driving element drives the hydraulic telescopic rod to perform telescopic motion, the hydraulic telescopic rod drives the piston to reciprocate through telescopic motion, and the piston can push the valve block to move.

The waterproof putty and the preparation method thereof can improve the deformation resistance and the bonding strength of the waterproof putty and improve the water resistance of the waterproof putty.

Drawings

FIG. 1 is a schematic representation of the original structure of the wood fiber of the present invention;

FIG. 2 is a schematic structural diagram of the wood fiber of the present invention after high pressure blasting;

FIG. 3 is a schematic structural diagram of the wood fiber and the phase change particles of the present invention after being combined;

FIG. 4 is a schematic structural diagram of the composite phase change material of the present invention after being treated with a sealant;

FIG. 5 is a schematic view of the internal structure of the water resistant putty of the present invention;

FIG. 6 is a schematic view of the preparation process of the water resistant putty of the present invention;

FIG. 7 is a schematic perspective view of the autoclave of the present invention;

FIG. 8 is a schematic diagram of the side view of the autoclave of the present invention;

FIG. 9 isbase:Sub>A schematic cross-sectional view taken along line A-A in FIG. 8 (before separation of the valve plate and the valve seat);

FIG. 10 isbase:Sub>A schematic cross-sectional view taken along line A-A in FIG. 8 (after the valve plate and the valve seat are separated);

FIG. 11 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 8 (after the valve seat has returned to the initial position);

FIG. 12 is a schematic front view of a valve seat in the autoclave of the present invention;

FIG. 13 is a schematic rear view of a valve seat in the autoclave of the present invention;

FIG. 14 is a schematic front view of the structure of the valve plate in the autoclave of the present invention.

Description of the reference numerals:

a. wood fiber; b. first fiber pores; b', second fiber micropores; c. phase change particles; d. a sealing film; k. composite phase change particles; 1. a rotating section; 101. a tub wall; 1011. an annular sidewall; 1012. a first clamping groove; 1013. a second clamping groove; 1014. an end cap; 102. an inner chamber; 1021. a first inner chamber; 1022. a second inner chamber; 103. a partition valve; 1031. a valve seat; 1032. a valve plate; 1033. a connecting member; 1034. a stirring blade; 1035. connecting holes; 104. a gas port; 105. a material port; 106. a pressure sensor; 107. a toothed ring; 2. a first fixed section; 201. a drive motor; 202. a transmission gear; 203. a first insertion groove; 204. a first steel ball; 3. a second fixed section; 301. a hydraulic telescopic drive element; 302. a hydraulic telescopic rod; 303. a piston; 304. a propulsion ring; 305. a second insertion groove; 306. and the second steel ball.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

As shown in figures 1-5, the waterproof putty comprises the following raw materials in parts by weight:

preferably, the water-resistant putty is an interior wall putty paste.

Furthermore, the basic material of the water-resistant putty consists of the sierozem powder, the ground calcium carbonate and the talcum powder, and the granularity of the sierozem powder, the ground calcium carbonate and the talcum powder is 200-400 meshes. In the waterproof putty, the sierozem powder, the ground calcium carbonate and the talcum powder can react with water to form a waterproof layer, so that the paste of the waterproof putty has excellent waterproof performance.

Furthermore, the elastic acrylic emulsion and the non-elastic acrylic emulsion form the main slurry of the water-resistant putty, and the elastic acrylic emulsion and the non-elastic acrylic emulsion are both copolymer emulsions of styrene and acrylic ester.

Furthermore, the glass transition temperature of the elastic acrylic emulsion is 30-40 ℃, the viscosity is 300-600 CP25, the solid content is 40-50%, and the acid value is 50-60; the glass transition temperature of the non-elastic acrylic emulsion is-20 to-10 ℃, the viscosity is 500 to 800CP25, the solid content is 40 to 50 percent, and the acid value is 50 to 60.

By mixing the elastic acrylic emulsion and the non-elastic acrylic emulsion, the water-resistant putty has better elasticity and flexibility, has good crack resistance and is not easy to generate cracks.

Further, the composite phase change material is wood fiber filled with phase change particles. Wherein the weight ratio of the phase change particles to the wood fibers is (3-5) to 1.

Furthermore, the phase change particles are phase change particles composed of organic phase change materials and/or inorganic phase change materials.

Preferably, the phase change particles are liquid-solid phase change materials.

As some embodiments of the present application, the phase-change particles are a mixture of paraffin-based linear alkane phase-change materials and ester phase-change materials; the paraffin straight-chain alkane phase change material can be paraffin, n-hexadecane, n-octadecane and the like, and the ester phase change material can be butyl stearate, octyl stearate and the like.

Preferably, the sealing agent is lignin modified phenolic resin, and the lignin modified phenolic resin can seal micropores in the wood fiber and can be tightly combined with the wood fiber and the starch.

Further, the starch is one or more of carboxymethyl starch, succinate starch and acetate starch.

wherein the water-proofing agent is a higher fatty acid water-proofing agent; the heat conducting agent is one or more of aluminum oxide, silicon oxide, zinc oxide, magnesium oxide, calcium oxide and silicon carbide; the mildew-proof bactericide is one or more of ammonium persulfate, calcium phosphate, tetrachloroisophthalonitrile, p-chloro-m-cresol, p-chloro-m-dimethylphenol and isothiazolinone bactericides; the flame retardant is one or more of magnesium hydroxide, aluminum hydroxide, silicon flame retardant and phosphorus-nitrogen flame retardant; the defoaming agent is mineral oil defoaming agent; the dispersing agent is one or more of cellulose derivatives, sodium dodecyl sulfate and polyacrylamide; the film-forming assistant is styrene resin, polyurethane resin, glycol and methyl cellulose according to the proportion of (10-20): (5-15): (3-5): (0.2-0.5) by weight ratio, and uniformly mixing.

In addition, as shown in fig. 6 to 14, the application also provides a preparation method of the water-resistant putty, the method is used for preparing the water-resistant putty, and the method comprises the following steps:

s2, micropore sealing treatment in the composite phase-change material: filling a sealing agent into the composite phase-change material obtained in the step S1 under a certain pressure, and sealing micropores in the composite phase-change material;

Further, the step S1 includes:

s13, cooking: the wood chips are steamed and boiled for 2 to 5 hours under the conditions of the temperature of 140 to 160 ℃ and the air pressure of 0.5 to 0.7MPa, and the weight adding ratio of water to the wood chips during the steaming and boiling is (3 to 5) to 1;

s14, grinding: fishing out the cooked wood chips, and putting the wood chips into a pulping machine for pulping, wherein the working concentration of the pulping machine is 15-45%, and wood fibers with the beating degree of 10-30 DEG SR are obtained after pulping;

s15, draining: placing the material discharged by the pulping machine on a screen mesh, and draining water for later use;

s17, filling phase change components: and (3) placing the phase change component in a high-pressure autoclave, uniformly mixing the phase change component with the wood fiber subjected to high-pressure micro-blasting, keeping the pressure of the phase change component at 0.5-1 MPa for 0.2-1 h, filling the phase change component into the wood subjected to micro-blasting under the action of pressure to form phase change particles, and reducing the pressure of the high-pressure autoclave to 0.2-0.3 MPa at a constant speed within 3-5 min to obtain the composite phase change material.

Preferably, in the step S17, during the high pressure micro-blasting, the pressure in the autoclave can be rapidly reduced to 0.5 to 1MPa within 1 min.

Further, the step S2 includes: and (2) placing a sealing agent into a high-pressure kettle, uniformly mixing the sealing agent with the composite phase-change material obtained by the step (S1), keeping the sealing agent at the air pressure of 0.2-0.3 MPa for 0.3-0.5 h, filling the sealing agent into the wood subjected to micro-blasting treatment under the action of high pressure, and reducing the air pressure in the high-pressure kettle to normal pressure at a constant speed to obtain the composite phase-change material subjected to micropore sealing treatment.

Further, the step S3 includes: and (3) putting starch into a high-pressure kettle, and uniformly mixing the starch with the composite phase change material obtained by the step (S2) under normal pressure to coat the starch on the composite phase change material subjected to micropore sealing treatment.

Further, the step S4 includes: and (3) placing the base material, the slurry, the auxiliary agent and water in an autoclave, and uniformly mixing the base material, the slurry, the auxiliary agent and the water with the composite phase change material obtained by the treatment in the step (S3) under normal pressure to obtain the waterproof putty.

Further, in the preparation process of the water-resistant putty, the autoclave can be heated to a certain temperature, and the heating temperature is preferably 20-60 ℃ so that solid phase-change materials, resin and the like in the autoclave can be melted into liquid.

Further, as shown in fig. 7 to 14, the autoclave includes:

the rotary section 1 is of a hollow barrel-shaped structure, and an inner chamber 102 is arranged in the rotary section 1;

the fixed section is fixedly arranged on the ground through a bracket, a base and the like, and the rotating section 1 is rotatably connected with the fixed section;

a partition valve 103 is arranged in the rotating section 1, the partition valve 103 partitions the inner chamber 102 to form a first inner chamber 1021 and a second inner chamber 1022, and the first inner chamber 1021 and the second inner chamber 1022 are communicated or disconnected by switching the state of the partition valve 103.

Specifically, the partition valve 103 includes:

a valve seat 1031 fixedly installed in the inner chamber 102, wherein the valve seat 1031 is of a hollow structure;

the valve plate 1032 is clamped in the inner cavity 102, and a connecting hole 1035 is formed in the valve plate 1032 and is a through hole;

a connector 1033 having one end fixedly connected to the valve seat 1031 and the other end engaged with the connection hole 1035 to seal the connection hole 1035;

thus, when the valve seat 1031 and the valve plate 1032 are clamped together by the connecting piece 1033, the connecting hole 1035 in the valve plate 1032 is sealed by the connecting piece 1033, and the separating valve 103 can separate the first inner chamber 1021 and the second inner chamber 1022 on two sides of the separating valve, so that the first inner chamber 1021 and the second inner chamber 1022 are in a disconnected state;

when the connecting member 1033 is pulled out of the connecting hole 1035, the partition valve 103 can communicate the first internal chamber 1021 and the second internal chamber 1022 at two sides thereof through the hollow valve seat 1031 and the connecting hole 1035, so that the first internal chamber 1021 and the second internal chamber 1022 are in a communicating state.

Preferably, a stirring blade 1034 is formed on the valve seat 1031 by hollowing out, and the stirring blade 1034 extends from the center of the valve seat 1031 to the periphery and is a fan-shaped spiral blade.

Further, the valve seat 1031 and the valve plate 1032 are both arranged perpendicular to the central axis of the inner chamber 102, and the edge of the valve plate 1032 is connected with the inner wall of the rotating section 1 in a sealing manner; one end of the connecting member 1033 is fixedly connected to the valve seat 1031, the other end is a cantilever end, an end wall of the cantilever end is in a spherical structure, the diameter of the cantilever end is larger than that of the connecting hole 1035, and after the spherical structure of the cantilever end is inserted into the connecting hole 1035 under an external force, the connecting member 1033 can be sealed and clamped with the valve plate 1032.

Further, the valve seat 1031 is located at a side close to the first inner chamber 1021, and the valve plate 1032 is located at a side close to the second inner chamber 1022.

Furthermore, the rotating section 1 comprises a barrel wall 101 and an inner chamber 102 enclosed by the barrel wall 101, the barrel wall 101 comprises:

an annular side wall 1011, an end cap 1014 is arranged at one end of the annular side wall 1011, and the end cap 1014 closes the end of the annular side wall 1011; the other end of the annular side wall 1011 is open and is closed by a piston 303;

a first clamping groove 1012 and a second clamping groove 1013 are arranged on the inner surface of the annular side wall 1011, the valve seat 1031 is installed in the inner chamber 102 through the first clamping groove 1012, and the valve plate 1032 is installed in the inner chamber 102 through the second clamping groove 1013.

Preferably, the barrel wall 101 and the valve seat 1031 are made of rigid materials, such as stainless steel, cast iron, hard polymer materials, and the like; the valve plate 1032 is made of elastic materials, such as rubber; the connector 1033 may be made of a rigid material or an elastic material. Thus, the barrel wall 101 and the valve seat 1031 are both made of rigid materials, so that the barrel wall 101 and the valve seat 1031 can be stably clamped together and are not easy to separate due to external forces such as pressure difference; on the contrary, the connection stability between the valve plate 1032 and the connecting member 1033 is low, and the connecting member can generate obvious elastic deformation under the action of external force such as pressure difference, and finally, the cantilever end of the connecting member 1033 is separated from the connecting hole 1035 in the valve plate 1032 and separated due to the elastic deformation.

More preferably, the connecting member 1033 is made of a rigid material, and the connecting member 1033 and the valve seat 1031 are manufactured by an integral molding process. Therefore, the clamping and the separation of the valve plate 1032 and the valve seat 1031 are determined by the deformation degree of the valve plate 1032, so that the state control of the partition valve 103 is easier and more accurate.

In the present application, by adjusting the spherical structure of the cantilever end in the connecting member 1033 and the size of the connecting hole 1035, when the pressure difference between the first inner chamber 1021 and the second inner chamber 1022 is less than or equal to 3Mp, the connecting member 1033 can be sealingly clamped in the connecting hole 1035; when the pressure difference between the first inner chamber 1021 and the second inner chamber 1022 is greater than or equal to 5Mp, the connecting member 1033 is disengaged from the connecting hole 1035, and the valve seat 1031 and the valve plate 1032 are separated.

Further, the first inner chamber 1021 is located on one side of the partition valve 103 close to the end cap 1014, that is, the area between the partition valve 103 and the end cap 1014 is the first inner chamber 1021; the second inner chamber 1022 is located on the other side of the partition valve 103, i.e. the area between the partition valve 103 and the piston 303 is the second inner chamber 1022.

Further, at least one air port 104 is further disposed on the barrel wall 101, and the air port 104 is used for filling air into the inner chamber 102 or exhausting air in the inner chamber 102.

Preferably, at least one of the air ports 104 is disposed in the first interior chamber 1021.

Further, at least one material opening 105 is further formed in the barrel wall 101, and the material opening 105 is used for injecting raw materials into the inner chamber 102 or guiding out prepared waterproof putty.

Preferably, at least one of the material ports 105 is disposed in the first inner chamber 1021.

Further, at least one pressure sensor 106 is disposed in the inner chamber 102, and the pressure sensor 106 is configured to monitor a pressure value within the inner chamber 102.

Preferably, at least one pressure sensor 106 is disposed within the first interior chamber 1021.

Further, the fixing section includes: the first fixed section 2 and the second fixed section 3 are oppositely arranged at two ends of the rotating section 1, and the first fixed section 2 and the second fixed section 3 are respectively and rotatably connected with the rotating section 1.

Specifically, the first fixing section 2 is located at an end close to the first inner chamber 1021, and correspondingly, the second fixing section 3 is located at an end close to the second inner chamber 1022.

Furthermore, an annular first insertion groove 203 is formed in the first fixed section 2, one end of the annular side wall 1011 protrudes out of the end cap 1014 and is inserted into the first insertion groove 203, and the end of the annular side wall 1011 can rotate in the first insertion groove 203, so that the rotatable connection between the rotating section 1 and the first fixed section 2 is realized.

Preferably, a plurality of first steel balls 204 are arranged in the first insertion groove 203, the first steel balls 204 are rotatably clamped between the first insertion groove 203 and the annular side wall 1011, and the annular side wall 1011 can more easily rotate in the first insertion groove 203 through the rolling of the first steel balls 204.

Similarly, an annular second insertion groove 305 is provided on the second fixed segment 3, the other end of the annular side wall 1011 is inserted into the second insertion groove 305, and the end of the annular side wall 1011 can rotate in the second insertion groove 305, so that the rotatable connection between the rotating segment 1 and the second fixed segment 3 is realized.

Likewise, a plurality of second steel balls 306 may be disposed in the second insertion groove 305, the second steel balls 306 may be rotatably clamped between the second insertion groove 305 and the annular side wall 1011, and the annular side wall 1011 may be more easily rotated in the second insertion groove 305 by the rolling of the second steel balls 306.

In addition, the second steel ball 306 is arranged to form a gap for gas to flow between the second insertion groove 305 and the annular side wall 1011, and gas can be sucked or discharged through the gap when the piston 303 in the second fixing section 3 reciprocates.

Further, on the first fixing section 2, there are provided: the driving device comprises a driving motor 201 and a transmission gear 202, wherein an output shaft of the driving motor 201 is connected with the transmission gear 202;

correspondingly, a toothed ring 107 is arranged on the outer wall of the rotary section 1, and the toothed ring 107 is in meshed connection with the transmission gear 202

In this way, the driving motor 201 can drive the rotation section 1 to rotate through the transmission gear 202 and the gear ring 107.

Further, a hydraulic telescopic driving element 301, a hydraulic telescopic rod 302 and a piston 303 which are connected in sequence are arranged in the second fixing section 3, and the piston 303 is hermetically connected with the annular side wall 1011; the hydraulic telescopic driving element 301 can drive the hydraulic telescopic rod 302 to perform telescopic motion, and the hydraulic telescopic rod 302 pushes the piston 303 to move through telescopic motion.

Furthermore, an impelling ring 304 is arranged on the piston 303, the impelling ring 304 is an annular convex structure, the impelling ring 304 is located on one side of the piston 303 close to the partition valve 103, when the piston 303 impels the valve plate 1032 to approach the valve seat 1031, the impelling ring 304 contacts with the valve plate 1032 and impels the valve plate 1032 to move, and meanwhile, a space for accommodating the cantilever end of the connecting member 1033 is arranged inside the impelling ring 304, so that the valve plate 1032 and the cantilever end of the connecting member 1033 can be clamped together again.

The autoclave was used as follows:

in the step S16, during the high-pressure micro-blasting: the method comprises the steps that wood fiber drained off is placed in a first inner cavity 1021 in an autoclave, the first inner cavity 1021 is inflated through a gas port 104, so that the gas pressure in the first inner cavity 1021 reaches 2-3 MPa, at the moment, a valve seat 1031 and a valve plate 1032 are clamped together through a connecting piece 1033, the first inner cavity 1021 and a second inner cavity 1022 are not communicated, after the wood fiber is kept for 3-5 hours under the gas pressure of 2-3 MPa, the first inner cavity 1021 is inflated through the gas port 104 again, so that the gas pressure in the first inner cavity 1021 is rapidly increased, under the action of high pressure in the first inner cavity 1021, the valve plate 1032 deforms and moves towards one side close to the second inner cavity 1022, and when the pressure difference between the first inner cavity 1021 and the second inner cavity 1022 reaches more than 5MPa, the connecting piece 1033 is separated from the valve plate 1032, and the valve plate 1032 moves to the vicinity of a piston 1022 in the second inner cavity 1022 under the impact action of the gas pressure; at this time, due to the separation of the valve plate 1032 and the connecting piece 1033, the first inner chamber 1021 is communicated with the second inner chamber 1022, and the gas in the first inner chamber 1021 is released into the second inner chamber 1022, so that the gas pressure in the first inner chamber 1021 can be rapidly reduced to 0.5-1 MPa, and the high-pressure micro-blasting of the wood fiber is realized;

in practical use, the overall pressure in the inner chamber 102 after the first inner chamber 1021 and the second inner chamber 1022 are communicated can be adjusted by adjusting the volume ratio of the first inner chamber 1021 and the second inner chamber 1022.

Then, in the step S17, in the process of filling the phase change component, the phase change component is injected into the inner chamber 102 through the material port 105, the driving motor 201 is started to drive the rotating section 1 to rotate, the phase change component and the wood fiber subjected to high-pressure micro-blasting are kept for 0.2 to 1 hour under the air pressure of 0.5 to 1MPa under the rotation, so that the phase change component is filled into the micropores in the wood subjected to micro-blasting under the high-pressure action to form phase change particles, and then the air port 104 is opened to reduce the air pressure in the autoclave to 0.2 to 0.3MPa at a constant speed, thereby obtaining the composite phase change material.

Then, in the step S2, a sealing agent is injected into the inner chamber 102 through the material opening 105, the driving motor 201 is started to drive the rotating section 1 to rotate, the sealing agent and the composite phase change material are uniformly mixed under rotation, the mixture is kept at an air pressure of 0.2-0.3 MPa for 0.3-0.5 h, the sealing agent is filled into micropores on the surface of the wood fiber subjected to the micro-blasting treatment under the high pressure effect, the air port 104 is opened, and the air pressure in the autoclave is reduced to normal pressure at a constant speed, so that the composite phase change material subjected to the micropore sealing treatment is obtained.

In the next step S3, starch is injected into the inner chamber 102, the driving motor 201 is started to drive the rotating section 1 to rotate, and the rotating section and the composite phase change material obtained in the step S2 are uniformly mixed under normal pressure and rotation stirring, so that the composite phase change material subjected to the micropore sealing treatment is coated with the starch.

And finally, in the step S4, placing base materials, slurry, an auxiliary agent and water in the inner chamber 102, starting the driving motor 201 to drive the rotating section 1 to rotate, and uniformly mixing the base materials and the composite phase change material obtained by the step S3 under normal pressure and rotation stirring to obtain the waterproof putty.

In the rotating process of the rotating section 1, materials in the high-pressure kettle are uniformly mixed through two functions, wherein the first function is a mixing function generated in the process that the rotating section 1 rotates to drive the materials to ascend and fall; the other is a rotational stirring action produced by rotation of the stirring blade 1034 in the valve seat 1031.

In addition, after the waterproof putty is discharged each time, the hydraulic telescopic driving element 301 can be started to drive the hydraulic telescopic rod 302 to extend, the hydraulic telescopic rod 302 pushes the valve plate 1032 to move towards the direction close to the valve seat 1031 through the piston 303 and the pushing ring 304 thereon until the valve plate 1032 is pushed to the initial position, the valve plate 1032 is sealed and clamped with the connecting piece 1033 again, then the hydraulic telescopic driving element 301 is made to move reversely to drive the hydraulic telescopic rod 302 to shorten, and the hydraulic telescopic rod 302 drives the piston 303 and the pushing ring 304 thereon to return to the initial position.

At the same time, the pressure in the inner chamber 102 is detected by the pressure sensor 106 during use of the autoclave.

Through the above process, it can be found that: utilize the autoclave, this application in the preparation process of water proof putty, only need once inject gas, can realize the reaction of three kinds of different pressures, completion three stages in the autoclave, reduced the number of times of filling, gassing, simultaneously, avoided the transfer of material, make this application the preparation process of water proof putty easy operation, quick, and easily realize.

The preparation principle of the waterproof putty can be explained by combining the attached drawings 1-5: firstly, a wood fiber structure after slicing, cooking and pulping is shown in fig. 1, the wood fiber structure is mainly composed of wood fibers a which are interwoven and connected with one another, first fiber micropores b are formed among the wood fiber structures a, the first fiber micropores b are mostly mutually independent and unconnected micropores, after the wood fibers a are subjected to high-pressure blasting, gas immersed into the wood fibers a under high pressure is rapidly released, a plurality of first fiber micropores b can be communicated under the impact of the gas, and second fiber micropores b ' are formed among the wood fiber structures a, at the moment, in the process of injecting a phase-change material into the second fiber micropores b ' through high pressure to form phase-change particles c, the filling depth of the phase-change particles c is deeper, the filling difficulty is reduced, the loading capacity of the wood fibers a to the phase-change particles c is larger, and the phase-change particles c are difficult to flow out of the second fiber micropores b ' after being heated to generate phase change; in addition, the sealing agent is further arranged on the surface of the wood fiber a loaded with the phase change particles c, the sealing agent can be filled into micropores on the outer surface of the wood fiber a under pressure, and a sealing film d is formed on the outer surface of the wood fiber a to form composite phase change particles k, so that the phase change particles c in the wood fiber a can be further prevented from flowing out after being heated.

Moreover, the surface of the composite phase change particle k is coated with starch to increase the adhesive force between the composite phase change particle k and other components, so that the composite phase change particle k can be tightly bonded with the other components, and the better adhesive force and deformation resistance of the water-resistant putty are ensured.

In addition, the use of the wood fiber in the application can also increase the tensile strength and the deformation resistance of the water-resistant putty.

The water-resistant putty and the preparation method thereof described in the application are illustrated by the following specific examples:

example 1

A preparation process of the water-resistant putty comprises the following steps:

selecting 1-3 years old poplar as a raw material, peeling the poplar, cutting the poplar into wood chips with the thickness of about 1cm, cooking the wood chips for 2 hours at the temperature of 140 ℃ under the pressure of 0.5MPa, wherein the weight addition ratio of water to the wood chips is 3; then, placing the material discharged by the pulping machine on a screen mesh, draining, placing the wood fiber drained in the first cavity of the high-pressure kettle, keeping the wood fiber at the air pressure of 2MPa for 3 hours, pressurizing to separate a valve plate from a connecting piece, communicating the first cavity with the second cavity, and rapidly reducing the air pressure in the first cavity to 0.5MPa within 1min to obtain the wood fiber subjected to high-pressure micro-blasting; injecting the phase change component into a high-pressure kettle, stirring to uniformly mix the phase change component with the wood fiber subjected to high-pressure micro-blasting, keeping the pressure of the phase change component at 0.5MPa for 0.2h, opening an air port of the high-pressure kettle, and reducing the pressure of the high-pressure kettle to 0.2MPa at a constant speed within 3min to obtain a composite phase change material;

then, injecting a sealing agent into the high-pressure kettle, stirring to uniformly mix the sealing agent with the composite phase-change material, keeping the pressure of the sealing agent at 0.2MPa for 0.3h, opening a gas port of the high-pressure kettle, and reducing the pressure of the high-pressure kettle to normal pressure at a constant speed to obtain the composite phase-change material subjected to micropore sealing treatment;

then, putting the starch into a high-pressure kettle, and stirring at normal pressure to coat the starch on the composite phase change material subjected to micropore sealing treatment;

and finally, placing the base material, the slurry, the auxiliary agent and water in a high-pressure kettle, and stirring at normal pressure to uniformly mix the base material, the slurry, the auxiliary agent, the water and the composite phase-change material coated by the starch to obtain the waterproof putty.

The composite phase change material comprises 15 parts by weight of paraffin and 5 parts by weight of wood fiber after grinding and draining; the sealant is 3 parts by weight of rosin resin, and the starch is 2 parts by weight of carboxymethyl starch; the base material comprises: 8 parts of sierozem powder, 5 parts of ground calcium carbonate and 3 parts of talcum powder; the slurry comprises: 8 parts by weight of an elastic acrylic emulsion and 10 parts by weight of a non-elastic acrylic emulsion; in addition, the addition amount of the auxiliary agent in the water-resistant putty is 1 part by weight, and the addition amount of water is 5 parts by weight.

Example 2

selecting 1-3 years old tung wood as a raw material, peeling the raw material, cutting the raw material into wood chips with the thickness of about 2cm, then cooking the wood chips for 4 hours at the temperature of 155 ℃ and under the air pressure of 0.6MPa, wherein the weight addition ratio of water to the wood chips is 4; then, placing the material discharged by the pulping machine on a screen mesh, draining, placing the wood fiber drained in the first cavity of the high-pressure kettle, keeping the wood fiber at the air pressure of 2.4MPa for 4 hours, pressurizing to separate a valve plate from a connecting piece, communicating the first cavity with the second cavity, and rapidly reducing the air pressure in the first cavity to 0.6MPa within 1min to obtain the wood fiber subjected to high-pressure micro-blasting; injecting the phase change component into a high-pressure kettle, stirring to uniformly mix the phase change component with the wood fiber subjected to high-pressure micro-blasting, keeping the pressure of the phase change component at 0.6MPa for 0.5h, opening an air port of the high-pressure kettle, and reducing the pressure of the high-pressure kettle to 0.2MPa at a constant speed within 4min to obtain a composite phase change material;

then, injecting a sealing agent into the high-pressure kettle, stirring to uniformly mix the sealing agent with the composite phase-change material, keeping the pressure of the sealing agent at 0.2MPa for 0.4h, opening a gas port of the high-pressure kettle, and reducing the pressure of the high-pressure kettle to normal pressure at a constant speed to obtain the composite phase-change material subjected to micropore sealing treatment;

The composite phase change material comprises 15 parts by weight of paraffin, 5 parts by weight of butyl stearate and 5 parts by weight of wood fiber after grinding and draining; the sealing agent is 6 parts by weight of lignin modified phenolic resin, and the starch is 3 parts by weight of carboxymethyl starch; the base material comprises: 10 parts of sierozem powder, 7 parts of heavy calcium carbonate and 5 parts of talcum powder; the slurry comprises: 10 parts by weight of an elastic acrylic emulsion and 12 parts by weight of a non-elastic acrylic emulsion; in addition, the addition amount of the auxiliary agent in the water-resistant putty is 2 parts by weight, and the addition amount of water is 15 parts by weight.

Example 3

selecting 1-3 years old tung wood as a raw material, peeling the raw material, cutting the raw material into wood chips with the thickness of about 3cm, then cooking the wood chips for 5 hours at the temperature of 160 ℃ and under the pressure of 0.7MPa, wherein the weight addition ratio of water to the wood chips is 5; then, placing the material discharged by the pulping machine on a screen mesh, draining, placing the wood fiber drained in the first cavity of the high-pressure kettle, keeping the wood fiber at the air pressure of 2.8MPa for 5 hours, pressurizing to separate a valve plate from a connecting piece, communicating the first cavity with the second cavity, and rapidly reducing the air pressure in the first cavity to 0.7MPa within 1min to obtain the wood fiber subjected to high-pressure micro-blasting; injecting the phase change component into a high-pressure kettle, stirring to uniformly mix the phase change component with the wood fiber subjected to high-pressure micro-blasting, keeping the pressure of the phase change component at 0.7MPa for 1h, opening an air port of the high-pressure kettle, and reducing the pressure of the high-pressure kettle to 0.3MPa at a constant speed within 5min to obtain a composite phase change material;

then, injecting a sealing agent into the high-pressure kettle, stirring to uniformly mix the sealing agent with the composite phase-change material, keeping the pressure of the sealing agent at 0.3MPa for 0.5h, opening a gas port of the high-pressure kettle, and reducing the pressure of the high-pressure kettle to normal pressure at a constant speed to obtain the composite phase-change material subjected to micropore sealing treatment;

then, placing the starch in a high-pressure kettle, and stirring under normal pressure to ensure that the starch is coated on the composite phase change material subjected to micropore sealing treatment;

The composite phase change material comprises 15 parts by weight of paraffin, 14 parts by weight of butyl stearate and 6 parts by weight of wood fiber after grinding and draining; the sealing agent is 8 parts by weight of lignin modified phenolic resin, and the starch is 5 parts by weight of carboxymethyl starch; the base material comprises: 15 parts by weight of sierozem powder, 10 parts by weight of ground calcium carbonate and 7 parts by weight of talc powder; the slurry comprises: 15 parts by weight of an elastic acrylic emulsion and 15 parts by weight of a non-elastic acrylic emulsion; in addition, the addition amount of the auxiliary agent in the water-resistant putty is 3 parts by weight, and the addition amount of water is 20 parts by weight.

Comparative example 1

A preparation method of the water-resistant putty comprises the following steps:

selecting 1-3 years old tung wood as a raw material, peeling the raw material, cutting the raw material into wood chips with the thickness of about 2cm, then cooking the wood chips for 4 hours at the temperature of 155 ℃ and under the air pressure of 0.6MPa, wherein the weight addition ratio of water to the wood chips is 4; then, placing the material discharged by the pulping machine on a screen mesh, draining, placing the drained wood fiber and the phase change component in the inner chamber of the high-pressure kettle, keeping the first chamber communicated with the second chamber, stirring to uniformly mix the wood fiber and the phase change component, keeping the mixture at the air pressure of 0.6MPa for 0.5h, opening an air port of the high-pressure kettle, and reducing the air pressure in the high-pressure kettle to 0.2MPa at a constant speed within 4min to obtain the composite phase change material;

The composite phase change material comprises 15 parts by weight of paraffin, 5 parts by weight of butyl stearate and 5 parts by weight of wood fiber after grinding and draining; the sealing agent is 6 parts by weight of lignin modified phenolic resin, and the starch is 3 parts by weight of carboxymethyl starch; the base material comprises: 10 parts of sierozem powder, 7 parts of ground calcium carbonate and 5 parts of talcum powder; the slurry comprises: 10 parts by weight of an elastic acrylic emulsion and 12 parts by weight of a non-elastic acrylic emulsion; in addition, the addition amount of the auxiliary agent in the water-resistant putty is 2 parts by weight, and the addition amount of water is 15 parts by weight.

Comparative example 2

selecting 1-3 years old tung wood as a raw material, peeling the raw material, cutting the raw material into wood chips with the thickness of about 2cm, then cooking the wood chips for 4 hours at the temperature of 155 ℃ under the pressure of 0.6MPa, wherein the weight addition ratio of water to the wood chips is 4 during cooking, then fishing out the cooked wood chips, placing the cooked wood chips into a pulping machine for pulping, wherein the working concentration of the pulping machine is 25%, and obtaining wood fibers with the beating degree of 25 DEG SR after pulping; then, placing the material discharged by the pulping machine on a screen mesh, draining, placing the wood fiber drained in the first cavity of the high-pressure kettle, keeping the wood fiber at the air pressure of 2.4MPa for 4 hours, pressurizing to separate the valve plate from the connecting piece, communicating the first cavity with the second cavity, and rapidly reducing the air pressure in the first cavity to 0.6MPa within 1min to obtain the wood fiber subjected to high-pressure micro-blasting; injecting the phase change component into a high-pressure kettle, stirring to uniformly mix the phase change component with the wood fiber subjected to high-pressure micro-blasting, keeping the pressure of the phase change component at 0.6MPa for 0.5h, opening an air port of the high-pressure kettle, and reducing the pressure of the high-pressure kettle to normal pressure at a constant speed within 4min to obtain a composite phase change material;

then, putting the starch into a high-pressure kettle, and stirring at normal pressure to coat the starch on the composite phase change material;

The composite phase change material comprises 15 parts by weight of paraffin, 5 parts by weight of butyl stearate and 5 parts by weight of wood fiber after grinding and draining; the starch is 3 parts by weight of carboxymethyl starch; the base material comprises: 10 parts of sierozem powder, 7 parts of ground calcium carbonate and 5 parts of talcum powder; the slurry comprises: 10 parts by weight of an elastic acrylic emulsion and 12 parts by weight of a non-elastic acrylic emulsion; in addition, the addition amount of the auxiliary agent in the water-resistant putty is 2 parts by weight, and the addition amount of water is 15 parts by weight.

Comparative example 3

then, the base material, the slurry, the auxiliary agent and the water are placed in a high-pressure kettle, and the base material, the slurry, the auxiliary agent, the water and the composite phase-change material are uniformly mixed by stirring under normal pressure to obtain the waterproof putty.

The composite phase change material comprises 15 parts by weight of paraffin, 5 parts by weight of butyl stearate and 5 parts by weight of wood fiber after grinding and draining; the sealant is 6 parts by weight of lignin modified phenolic resin, and the base material comprises: 10 parts of sierozem powder, 7 parts of ground calcium carbonate and 5 parts of talcum powder; the slurry comprises: 10 parts by weight of an elastic acrylic emulsion and 12 parts by weight of a non-elastic acrylic emulsion; in addition, the addition amount of the auxiliary agent in the water-resistant putty is 2 parts by weight, and the addition amount of water is 15 parts by weight.

Comparative example 4

Directly placing the base material, the slurry, the auxiliary agent, the starch and the water in a high-pressure kettle, and stirring under normal pressure until the base material, the slurry, the auxiliary agent, the starch and the water are uniformly mixed to obtain the waterproof putty.

Wherein the base stock comprises: 10 parts of sierozem powder, 7 parts of ground calcium carbonate and 5 parts of talcum powder; the slurry comprises: 10 parts by weight of an elastic acrylic emulsion and 12 parts by weight of a non-elastic acrylic emulsion; the starch is 3 parts by weight of carboxymethyl starch; in addition, the addition amount of the auxiliary agent in the water-resistant putty is 2 parts by weight, and the addition amount of water is 15 parts by weight.

Test example 1

Taking 10g of each of the starch-coated composite phase-change materials prepared in the above examples 1 to 3 and comparative examples 1 to 2 and 10g of the composite phase-change material subjected to micropore sealing treatment in the comparative example 3, uniformly spreading the materials on 10 × 10cm filter paper, keeping the temperature for 1h at 65 ℃, cooling the materials to room temperature along with the way, measuring the weight change of the filter paper before and after the test, taking the filter paper with the same size as a blank control group, and performing a heating test along with the furnace, wherein the measurement results are shown in the following table 1:

TABLE 1 results of phase change material bleed amount detection

From table 1 above, it can be seen that: after the temperature is kept at 65 ℃ for 1h, the weight loss rate of the filter paper in the blank control group is 13.46%, and the comparison shows that the weight loss rate of the filter paper in the examples 1-3 and the comparative example 3 is also at the same level, so that the phase change material is basically prevented from seeping onto the filter paper; the weight of the filter paper in comparative examples 1 and 2 was significantly increased, indicating that the phase change material was significantly exuded to the filter paper.

Test example 2

100g of the water-resistant putty prepared in the above examples 1 to 3 and comparative examples 1 to 4 was uniformly coated on a putty layer having a thickness of 18mm and an area of 0.1m ² The rectangular template is composed of two right-angled triangle templates which are tightly spliced together along the diagonal line of the rectangle, after coating, the rectangular template is placed in a shady and cool place for natural air drying, a wedge block is inserted into the middle point of the connecting line of the two right-angled triangle templates, the wedge block is tapped, the insertion depth of the wedge block is gradually increased, so that the gap width of the joint of the two right-angled triangle templates is changed, meanwhile, the waterproof putty is observed, the gap width W of the joint of the two right-angled triangle templates and the linear length L between two end points of the crack when the waterproof putty generates the crack are recorded, the operation is repeated for 3 times, the average value of the average value is taken as a final test result, and the test result is shown in the following table 2:

TABLE 2 deformation resistance test results of water resistant putty

Comparing the data in table 2 above yields: the water-resistant putty in comparative examples 3 and 4 has relatively poor deformation resistance of the base material, and obvious cracks appear on the water-resistant putty layer when the gap width W reaches 3-4 mm.

Test example 3

The performance test of the water-resistant putty obtained in the above examples 1 to 3 shows that the test results are shown in the following table 3:

TABLE 3 detection results of water-resistant putty properties

Wherein the water resistance is determined according to the specification of GB/T1733, the bonding strength is determined according to the specification of JG/T24-2001, and the thermal conductivity is determined by a laser thermal conductivity analyzer at 25 ℃.

Although the present invention is disclosed above, the present invention is not limited thereto. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The waterproof putty is characterized by comprising the following raw materials in parts by weight:

8 to 15 parts of sierozem powder;

5-10 parts of heavy calcium carbonate;

3 to 7 parts of talcum powder;

8-15 parts of elastic acrylic emulsion;

10-15 parts of inelastic acrylic emulsion;

20-35 parts of composite phase change material;

3-8 parts of a sealing agent;

2 to 5 parts of starch;

1 to 3 parts of an auxiliary agent;

5 to 20 parts of water;

wherein the glass transition temperature of the elastic acrylic emulsion is 30 to 40 ℃, the viscosity is 300 to 600cP at 25 ℃, the solid content is 40 to 50 percent, and the acid value is 50 to 60mgKOH/g; the glass transition temperature of the non-elastic acrylic emulsion is-20 to-10 ℃, the viscosity is 500 to 800cP at 25 ℃, the solid content is 40 to 50 percent, and the acid value is 50 to 60mgKOH/g;

the sealing agent is one or more of rosin resin, acrylic resin, lignin modified phenolic resin, rosin pentaerythritol ester, polyamide resin, polycaprolactone and hydroxy acrylic resin;

the waterproof putty is prepared by the following method:

s4: preparing water-resistant putty: mixing the base material, the slurry, the auxiliary agent and water with the composite phase change material treated in the step S3, and uniformly stirring to obtain the waterproof putty;

wherein the step S1 includes:

s11, preparing materials: selecting 1 to 3 years old broad-leaf wood as a raw material, and peeling the broad-leaf wood for later use;

s12, cutting: cutting the wood processed in the step S11 into wood chips with the thickness of 1-3cm;

s13, cooking: cooking the wood chips for 2 to 5 hours at the temperature of 140 to 160 ℃ and under the air pressure of 0.5 to 0.7 MPa;

s14, grinding: taking out the cooked wood chips, putting the wood chips into a pulping machine for pulping, wherein the working concentration of the pulping machine is 15-45%, and obtaining wood fibers with the beating degree of 10-30 DEG SR after pulping;

s16, high-pressure micro blasting: placing the wood fiber with the water drained in an autoclave, keeping the wood fiber under the air pressure of 2-3 MPa for 3-5 h, and quickly relieving pressure to obtain the wood fiber after high-pressure micro-blasting;

s17, filling phase change components: putting the phase change component into an autoclave, uniformly mixing the phase change component with the wood fiber subjected to high-pressure micro-blasting, keeping the pressure of the phase change component under 0.5-1MPa for 0.2-1h, filling the phase change component into the wood subjected to micro-blasting under the action of pressure to form phase change particles, and reducing the pressure of the autoclave to 0.2-0.3 MPa at a constant speed within 3-5 min to obtain the composite phase change material;

the step S2 includes: and (2) placing the sealing agent into an autoclave, uniformly mixing the sealing agent with the composite phase change material obtained in the step (S1), keeping the pressure of the sealing agent under the pressure of 0.2-0.3 MPa for 0.3-0.5 h, and reducing the pressure of the autoclave to normal pressure at a constant speed to obtain the composite phase change material subjected to micropore sealing treatment.

2. The water putty according to claim 1 characterised in that the composite phase change material is wood fibre filled with phase change particles.

3. The water resistant putty as set forth in claim 1 wherein the auxiliary agent comprises, in parts by weight:

1 to 3 parts of a waterproof agent;

1 to 2 parts of a heat conducting agent;

0.5 to 1 part of mildew-proof bactericide;

0.1 to 1 part of flame retardant;

0.1 to 0.5 portion of defoaming agent;

0.5 to 0.8 part of a dispersant;

0.1 to 0.3 portion of film forming additive.

4. The water putty according to claim 1 characterised in that the autoclave includes:

a rotating section (1) in which an inner chamber (102) is provided within the rotating section (1);

the rotating section (1) is rotatably connected with the fixed section;

a partition valve (103) is arranged in the rotating section (1), the inner chamber (102) is partitioned by the partition valve (103) to form a first inner chamber (1021) and a second inner chamber (1022), and the first inner chamber (1021) and the second inner chamber (1022) are communicated or disconnected through state switching of the partition valve (103).

5. The water resistant putty as set forth in claim 4 characterized in that the separation valve (103) comprises:

the valve seat (1031) is fixedly installed in the inner chamber (102), and the valve seat (1031) is of a hollow structure;

the valve plate (1032) is clamped in the inner cavity (102), a connecting hole (1035) is formed in the valve plate (1032), and the connecting hole (1035) is a through hole;

a connecting piece (1033), one end of which is fixedly connected with the valve seat (1031), and the other end of which is clamped in the connecting hole (1035) and seals the connecting hole (1035);

when the valve seat (1031) and the valve plate (1032) are clamped together through the connecting piece (1033), the first inner chamber (1021) and the second inner chamber (1022) at two sides of the valve seat are separated by the separating valve (103), so that the first inner chamber (1021) and the second inner chamber (1022) are in a disconnected state;

when the connecting piece (1033) is pulled out from the connecting hole (1035), the first inner chamber (1021) and the second inner chamber (1022) are in a communication state.

6. The water resistant putty as set forth in claim 5 wherein the fixing section includes: the first fixed section (2) and the second fixed section (3) are oppositely arranged at two ends of the rotating section (1), and the first fixed section (2) and the second fixed section (3) are respectively in rotatable connection with the rotating section (1);

the first fixing section (2) is provided with: the driving device comprises a driving motor (201) and a transmission gear (202), wherein an output shaft of the driving motor (201) is connected with the transmission gear (202); correspondingly, a toothed ring (107) is arranged on the outer wall of the rotating section (1), and the toothed ring (107) is meshed with the transmission gear (202);

set up the flexible drive element of hydraulic pressure (301), hydraulic telescoping rod (302) and piston (303) that connect gradually in second fixed section (3), the flexible drive element of hydraulic pressure (301) drive hydraulic telescoping rod (302) carry out concertina movement, hydraulic telescoping rod (302) drive through flexible piston (303) reciprocating motion, piston (303) can promote valve block (1032) motion.