CN109486090B - EPS foam board - Google Patents

EPS foam board Download PDF

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CN109486090B
CN109486090B CN201811298382.5A CN201811298382A CN109486090B CN 109486090 B CN109486090 B CN 109486090B CN 201811298382 A CN201811298382 A CN 201811298382A CN 109486090 B CN109486090 B CN 109486090B
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reaction kettle
foam board
parts
eps foam
flame
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CN109486090A (en
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张茂岭
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Fengxian County Jianxin Foam Products Co ltd
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Fengxian County Jianxin Foam Products Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/02—Organic and inorganic ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K3/2279—Oxides; Hydroxides of metals of antimony
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/88—Insulating elements for both heat and sound
    • E04B1/90—Insulating elements for both heat and sound slab-shaped
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C08K2003/0806—Silver
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives

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Abstract

The invention discloses an EPS foam board, which is a flame-retardant EPS foam board, wherein two opposite surfaces of the flame-retardant EPS foam board are respectively coated with an auxiliary layer, the flame-retardant EPS foam board is provided with a plurality of uniformly distributed through holes, support bodies are arranged in the through holes, the two auxiliary layers are fixedly arranged through the support bodies, and the auxiliary layers and the support bodies are made of the same material and are integrally formed; according to the invention, the auxiliary layer is arranged on the driven EPS foam board, so that the strength of the EPS foam board is improved, and the surface of the EPS foam board is prevented from being damaged; meanwhile, the supporting body and the auxiliary layer are integrally formed, so that the auxiliary layer is more stable in fixation, the strength of the EPS foam board is further guaranteed, and the problem that the EPS foam board is easy to fall off in a traditional bonding mode is avoided.

Description

EPS foam board
Technical Field
The invention relates to the field of foam boards, in particular to an EPS foam board.
Background
The traditional EPS foam board has a very wide application range, and the EPS board (expandable polystyrene board) has the advantages of light weight, low price, low thermal conductivity, small water absorption, good electrical insulation performance, sound insulation, shock resistance, moisture resistance, simple forming process and the like, so that the EPS board is widely used as heat insulation, sound insulation and earthquake-proof materials for buildings, ships, automobiles, trains, refrigeration, freezing and the like. But its self intensity is relatively poor, and the breakage is easy, need cooperate other materials to carry out the construction, need make corresponding protective layer to different service functions, for example it is when keeping warm, and the surface all needs the cladding one deck harder panel, if directly use it to receive the destruction of outside hard thing very easily, still need it to have certain degerming effect simultaneously in fields such as domestic construction and cold-stored to improve its adaptability.
Disclosure of Invention
Aiming at the technical defects, the invention aims to provide the EPS foam board, which solves the problems that the existing EPS foam board has poor self-strength and self-adaptability, and different protective layers are required to be arranged on the surface of the EPS foam board according to different use ranges, so that the interchangeability is reduced.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides an EPS foam board, which is a flame-retardant EPS foam board, wherein two opposite surfaces of the flame-retardant EPS foam board are respectively coated with an auxiliary layer, the flame-retardant EPS foam board is provided with a plurality of uniformly distributed through holes, support bodies are arranged in the through holes, the two auxiliary layers are fixedly arranged through the support bodies, and the auxiliary layers and the support bodies are made of the same material and are integrally formed; the shape of the through hole is the same as that of the support body, and the two ends of the through hole are flared and the middle of the through hole is closed.
Preferably, the position department that fire-retardant type EPS cystosepiment contacted with the auxiliary layer is provided with a plurality of evenly distributed's arch, protruding with fire-retardant type EPS cystosepiment integrated into one piece.
Preferably, the auxiliary layer and the support body are prepared from the following raw materials in parts by weight:
350-500 parts of ABS rubber powder, 46-82 parts of antimony trioxide, 30-47 parts of calcium-zinc composite heat stabilizer, 210-290 parts of silver nanoparticles, 134-184 parts of nano silicon dioxide, 71-145 parts of ethanol with the volume fraction of more than 90%, 51-125 parts of dibutyl phthalate, 46-64 parts of cross-linking agent and 20-34 parts of 2, 6-di-tert-butyl-4-methylphenol.
Preferably, the crosslinking agent is any one of diethylenetriamine, benzoyl peroxide and vinyl triethoxysilane.
Preferably, the preparation steps of the auxiliary layer and the support body are as follows:
s1: adding 200-250 parts of ultrapure water with the conductivity of 1.2 muS/cm-1.8 muS/cm into a reaction kettle, starting a stirrer in the reaction kettle at the rotation speed of 50-100 rpm, and starting a heater to raise the temperature in the reaction kettle to 89-110 ℃; sequentially adding ABS rubber powder, ethanol and dibutyl phthalate, uniformly stirring, adjusting the pH value to 6.5-7.5, adjusting the rotation speed of a stirrer to 200-300 rpm, adding a calcium-zinc composite heat stabilizer and 2, 6-di-tert-butyl-4-methylphenol, adjusting the temperature to 134-168 ℃, and keeping the temperature for 30-60 minutes;
s2: crushing silver nanoparticles and nano silicon dioxide, wherein the particle size of the powder is 2500-3000 meshes; adding antimony trioxide, uniformly mixing, flatly paving in a tray, wherein the flatly-paved thickness is 10-15 mm, and irradiating for 30-60 minutes by adopting alpha rays with the dosage of 5-6 kGy and the energy of 6-7 MeV;
s3: dissolving the mixed powder treated in the step 2 in step S1, increasing the rotating speed of a stirrer to 600-700 rpm, controlling the temperature to 210-260 ℃, starting a vacuum pump to enable the vacuum degree of the reaction kettle to reach-0.5-0.2 MPa, and keeping the state for 30-40 minutes; pressure is released, and the concentration is 70-150 Bq.m-3Radon gas, so that the pressure in the reaction kettle reaches the standard atmospheric pressure, and standing for more than 3.8 days under the condition of heat preservation; the rotating speed of the stirrer is increased to 1000 rpm-1200 rpm, and the pressure in the reaction kettle is kept at the standard atmospheric pressure; adding a cross-linking agent, stirring and mixing to ensure that the hydrophilic-lipophilic balance value of the solution in the reaction kettle is 7.5-8.5, and standing for 3-4 hours under heat preservation;
s4: the rotating speed of the stirrer is increased to 1200 rpm-1400 rpm, the pressure of the reaction kettle is increased to reach 2 times of standard atmospheric pressure, the temperature is 340-360 ℃, and the reaction kettle is kept for 3-4 hours; and after the reaction is finished, reducing the pressure in the reaction kettle to the standard atmospheric pressure, reducing the rotating speed of the reaction kettle to 0, reducing the temperature of the reaction kettle to be below the combustion temperature of the flame-retardant EPS foam board, then discharging and pouring the material onto the flame-retardant EPS foam board in the mold, and finally feeding the material into a molding press to obtain the auxiliary layer and the support body.
The invention has the beneficial effects that: according to the invention, the auxiliary layer is arranged on the driven EPS foam board, so that the strength of the EPS foam board is improved, and the surface of the EPS foam board is prevented from being damaged; meanwhile, the support body and the auxiliary layer are integrally formed, so that the auxiliary layer is more stably fixed, the strength of the EPS foam plate is further ensured, and the problem that the EPS foam plate is easy to fall off in a traditional bonding mode is solved; in addition, the preparation method of the invention is utilized to improve the strength and the aging resistance of the auxiliary layer and the support body, and the silver nanoparticles and the nano-silica are utilized to obviously improve the strength, so that the EPS foam board disclosed by the invention has good mechanical properties and can meet the requirements of the existing construction.
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, 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 the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an EPS foam board provided by the present invention;
fig. 2 is an enlarged view of a portion a in fig. 1.
Description of reference numerals: 1-flame-retardant EPS foam board, 11-bulges, 2-auxiliary layer and 3-support body.
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.
As shown in fig. 1 to 2, the EPS foam board is a flame-retardant EPS foam board 1, two opposite surfaces of the flame-retardant EPS foam board 1 are respectively coated with an auxiliary layer 2, the flame-retardant EPS foam board 1 is provided with a plurality of uniformly distributed through holes, support bodies 3 are arranged in the through holes, the two auxiliary layers 2 are fixedly arranged through the support bodies 3, and the auxiliary layers 2 and the support bodies 3 are made of the same material and are integrally formed; the shape of the through hole is the same as that of the support body 3, and two ends of the through hole are flared and the middle of the through hole is closed.
Further, fire-retardant type EPS cystosepiment 1 with the position department that auxiliary layer 2 contacted is provided with a plurality of evenly distributed's arch 11, protruding with fire-retardant type EPS cystosepiment 1 integrated into one piece, bellied setting has improved auxiliary layer 2 and the contact strength of fire-retardant type EPS cystosepiment 1.
The auxiliary layer 2 and the support body 3 are prepared from the following raw materials in parts by weight:
350-500 parts of ABS rubber powder, 46-82 parts of antimony trioxide, 30-47 parts of calcium-zinc composite heat stabilizer, 210-290 parts of silver nanoparticles, 134-184 parts of nano silicon dioxide, 71-145 parts of ethanol with the volume fraction of more than 90%, 51-125 parts of dibutyl phthalate, 46-64 parts of cross-linking agent and 20-34 parts of 2, 6-di-tert-butyl-4-methylphenol; the cross-linking agent is any one of diethylenetriamine, benzoyl peroxide and vinyl triethoxysilane.
Wherein, antimony trioxide is used as a flame retardant to enhance the flame retardant property of the EPS foam board; the calcium-zinc composite heat stabilizer is used for stabilizing the manufacturing process and improving the quality of a finished product; the strength of the auxiliary layer 2 and the support body 3 is enhanced by the action of the silver nanoparticles and the nano silicon dioxide, the anti-aging performance of the auxiliary layer 2 and the support body 3 is improved by utilizing the ultraviolet ray resistance capability of the nano silicon dioxide, and the auxiliary layer 2 and the support body 3 have a certain antibacterial effect by utilizing the action of silver ions when the silver nanoparticles and the nano silicon dioxide are used in a matched manner; dibutyl phthalate is used for plasticization, the flexibility is improved, but the durability is poor, and the defect is compensated by the added silver nanoparticles and the nano silicon dioxide; 2, 6-di-tert-butyl-4-methylphenol for improving the effects of oxidation resistance and aging;
the preparation steps of the auxiliary layer 2 and the support body 3 are as follows:
s1: adding 200-250 parts of ultrapure water with the conductivity of 1.2 muS/cm-1.8 muS/cm into a reaction kettle, starting a stirrer in the reaction kettle at the rotation speed of 50-100 rpm, and starting a heater to raise the temperature in the reaction kettle to 89-110 ℃; sequentially adding ABS rubber powder, ethanol and dibutyl phthalate, uniformly stirring, adjusting the pH value to 6.5-7.5 to enable the pH value to be close to neutral, adjusting the rotation speed of a stirrer to 200-300 rpm, adding a calcium-zinc composite heat stabilizer and 2, 6-di-tert-butyl-4-methylphenol, adjusting the temperature to 134-168 ℃, and keeping the temperature for 0.5-1 hour;
s2: crushing silver nanoparticles and nano silicon dioxide, wherein the particle size of the powder is 2500-3000 meshes; adding antimony trioxide, uniformly mixing, flatly paving in a tray, wherein the flatly paved thickness is 10-15 mm, irradiating for 30-60 minutes by adopting alpha rays with the dosage of 5-6 kGy and the energy of 6-7 MeV, and improving the ionization of the silver nanoparticles by utilizing the ionization capacity of the alpha rays;
s3: dissolving the mixed powder treated in the step 2 in step S1, increasing the rotating speed of a stirrer to 600-700 rpm, controlling the temperature to 210-260 ℃, starting a vacuum pump to enable the vacuum degree of the reaction kettle to reach-0.5 MPa to-0.2 MPa, and keeping the state for 0.3-0.4 hours; pressure is released, and the concentration is 70-150 Bq.m-3Radon gas, so that the pressure in the reaction kettle reaches the standard atmospheric pressure, keeping the temperature and standing for more than 3.8 days, generating alpha particles by utilizing the decay of the radon gas, generating ionization and promoting the ionization of silver ions; the rotating speed of the stirrer is increased to 1000 rpm-1200 rpm, and the pressure in the reaction kettle is kept at the standard atmospheric pressure; adding a cross-linking agent, stirring and mixing to ensure that the hydrophilic-lipophilic balance value of the solution in the reaction kettle is 7.5-8.5 and the solution is slightly lipophilic, and standing for 3-4 hours under heat preservation;
s4: the rotating speed of the stirrer is increased to 1200 rpm-1400 rpm, the pressure of the reaction kettle is increased to reach 2 times of standard atmospheric pressure, the temperature is 340-360 ℃, and the reaction kettle is kept for 3-4 hours; and after the reaction is finished, reducing the pressure in the reaction kettle to the standard atmospheric pressure, reducing the rotating speed of the reaction kettle to 0, reducing the temperature of the reaction kettle to be below the combustion temperature of the flame-retardant EPS foam board, then discharging and pouring the material onto the flame-retardant EPS foam board in the mold, and finally feeding the material into a molding press to obtain the auxiliary layer 2 and the support body 3.
The following are examples of the invention for preparing the auxiliary layer 2 and the support 3:
example 1: the weight portion is as follows:
s1: adding 200 parts of ultrapure water with the conductivity of 1.2 mu S/cm into a reaction kettle, starting a stirrer in the reaction kettle at the rotating speed of 50rpm, and starting a heater to raise the temperature in the reaction kettle to 89 ℃; sequentially adding 350 parts of ABS rubber powder, 71 parts of ethanol and 51 parts of dibutyl phthalate, uniformly stirring, adjusting the pH value to 6.5, adjusting the rotating speed of a stirrer to 200rpm, adding 30 parts of calcium-zinc composite heat stabilizer and 20 parts of 2, 6-di-tert-butyl-4-methylphenol, adjusting the temperature to 134 ℃, and keeping the temperature for 30 minutes;
s2: crushing 210 parts of silver nanoparticles and 134 parts of nano silicon dioxide, wherein the particle size of the powder is 2500 meshes; adding 46 parts of antimony trioxide, uniformly mixing, flatly paving in a tray, wherein the flatly paving thickness is 10mm, and irradiating for 30 minutes by adopting alpha rays with the dose of 5kGy and the energy of 6 MeV;
s3: dissolving the mixed powder treated in the step 2 in a step S1, increasing the rotating speed of a stirrer to 600rpm at the temperature of 210 ℃, starting a vacuum pump to enable the vacuum degree of the reaction kettle to reach-0.5 MPa, and keeping the state for 30 minutes; pressure is released and the concentration is 70 Bq.m-3Radon gas, so that the pressure in the reaction kettle reaches the standard atmospheric pressure, and standing for more than 3.8 days under the condition of heat preservation; the rotating speed of the stirrer is increased to 1000rpm, and the pressure in the reaction kettle is kept at the standard atmospheric pressure; adding 46 parts of cross-linking agent diethylenetriamine, stirring and mixing to ensure that the hydrophilic-lipophilic balance value of the reaction kettle solution is 7.5, and standing for 3 hours under the condition of heat preservation;
s4: the rotating speed of the stirrer is increased to 1200rpm, the pressure of the reaction kettle is increased to reach 2 times of standard atmospheric pressure, the temperature is 340 ℃, and the reaction kettle is kept for 3 hours; and after the reaction is finished, reducing the pressure in the reaction kettle to the standard atmospheric pressure, reducing the rotating speed of the reaction kettle to 0, reducing the temperature of the reaction kettle to be below the combustion temperature of the flame-retardant EPS foam board, then discharging and pouring the material onto the flame-retardant EPS foam board in the mold, and finally feeding the material into a molding press to obtain the auxiliary layer 2 and the support body 3.
Example 2: the weight portion is as follows:
s1: adding 220 parts of ultrapure water with the conductivity of 1.6 mu S/cm into the reaction kettle, starting a stirrer in the reaction kettle at the rotating speed of 80 rpm, and starting a heater to raise the temperature in the reaction kettle to 100 ℃; sequentially adding 430 parts of ABS rubber powder, 110 parts of ethanol and 90 parts of dibutyl phthalate, uniformly stirring, adjusting the pH value to 7, adjusting the rotating speed of a stirrer to 250 rpm, adding 40 parts of calcium-zinc composite heat stabilizer and 28 parts of 2, 6-di-tert-butyl-4-methylphenol, adjusting the temperature to 150 ℃, and keeping the temperature for 45 minutes;
s2: 250 parts of silver nanoparticles and 155 parts of nano silicon dioxide are taken for crushing, and the particle size of the powder is 2800 meshes; adding 58 parts of antimony trioxide, uniformly mixing, flatly paving in a tray, wherein the flatly paving thickness is 12 mm, and irradiating for 45 minutes by adopting alpha rays with the dose of 5.5 kGy and the energy of 6.5 MeV;
s3: dissolving the mixed powder treated in the step 2 in a step S1, increasing the rotating speed of a stirrer to 650 rpm at 235 ℃, starting a vacuum pump to enable the vacuum degree of the reaction kettle to reach-0.4 MPa, and keeping the state for 35 minutes; pressure is released and the concentration is led in to be 110 Bq.m-3Radon gas, so that the pressure in the reaction kettle reaches the standard atmospheric pressure, and standing for more than 3.8 days under the condition of heat preservation; the rotating speed of the stirrer is increased to 1100 rpm, and the pressure in the reaction kettle is kept at the standard atmospheric pressure; adding 55 parts of benzoyl peroxide as a crosslinking agent, stirring and mixing to enable the hydrophilic-lipophilic balance value of the solution in the reaction kettle to be 8, and standing for 3.5 hours under heat preservation;
s4: the rotating speed of the stirrer is increased to 1300rpm, the pressure of the reaction kettle is increased to reach 2 times of standard atmospheric pressure, the temperature is 350 ℃, and the reaction kettle is kept for 3.5 hours; and after the reaction is finished, reducing the pressure in the reaction kettle to the standard atmospheric pressure, reducing the rotating speed of the reaction kettle to 0, reducing the temperature of the reaction kettle to be below the combustion temperature of the flame-retardant EPS foam board, then discharging and pouring the material onto the flame-retardant EPS foam board in the mold, and finally feeding the material into a molding press to obtain the auxiliary layer 2 and the support body 3.
Example 3: the weight portion is as follows:
s1: adding 250 parts of ultrapure water with the conductivity of 1.8 mu S/cm into the reaction kettle, starting a stirrer in the reaction kettle at the rotating speed of 100rpm, and starting a heater to raise the temperature in the reaction kettle to 110 ℃; sequentially adding 500 parts of ABS rubber powder, 145 parts of ethanol and 125 parts of dibutyl phthalate, uniformly stirring, adjusting the pH value to 7.5, adjusting the rotating speed of a stirrer to 300rpm, adding 47 parts of calcium-zinc composite heat stabilizer and 34 parts of 2, 6-di-tert-butyl-4-methylphenol, adjusting the temperature to 168 ℃, and keeping the temperature for 60 minutes;
s2: 290 parts of silver nanoparticles and 184 parts of nano silicon dioxide are taken for crushing, and the particle size of the powder is 3000 meshes; adding 82 parts of antimony trioxide, uniformly mixing, flatly paving in a tray, wherein the flatly paving thickness is 15mm, and irradiating for 60 minutes by adopting alpha rays with the dose of 6kGy and the energy of 7 MeV;
s3: dissolving the mixed powder treated in the step 2 in step S1, increasing the rotating speed of a stirrer to 700rpm at the temperature of 260 ℃, starting a vacuum pump to enable the vacuum degree of the reaction kettle to reach-0.2 MPa, and keeping the state for 40 minutes; pressure is released and the concentration is led in to be 150 Bq.m-3Radon gas, so that the pressure in the reaction kettle reaches the standard atmospheric pressure, and standing for more than 3.8 days under the condition of heat preservation; the rotating speed of the stirrer is increased to 1200rpm, and meanwhile, the pressure in the reaction kettle is kept at the standard atmospheric pressure; adding 64 parts of cross-linking agent vinyl triethoxysilane, stirring and mixing to enable the hydrophilic-lipophilic balance value of the reaction kettle solution to be 8.5, and standing for 4 hours under heat preservation;
s4: the rotating speed of the stirrer is increased to 1400rpm, the pressure of the reaction kettle is increased to reach 2 times of standard atmospheric pressure, the temperature is 360 ℃, and the reaction kettle is kept for 4 hours; and after the reaction is finished, reducing the pressure in the reaction kettle to the standard atmospheric pressure, reducing the rotating speed of the reaction kettle to 0, reducing the temperature of the reaction kettle to be below the combustion temperature of the flame-retardant EPS foam board, then discharging and pouring the material onto the flame-retardant EPS foam board in the mold, and finally feeding the material into a molding press to obtain the auxiliary layer 2 and the support body 3.
Comparative example 1:
s1: adding 200 parts of ultrapure water with the conductivity of 1.2 mu S/cm into a reaction kettle, starting a stirrer in the reaction kettle at the rotating speed of 50rpm, and starting a heater to raise the temperature in the reaction kettle to 89 ℃; sequentially adding 350 parts of ABS rubber powder, 71 parts of ethanol and 51 parts of dibutyl phthalate, uniformly stirring, adjusting the pH value to 6.5, adjusting the rotating speed of a stirrer to 200rpm, adding 30 parts of calcium-zinc composite heat stabilizer and 20 parts of 2, 6-di-tert-butyl-4-methylphenol, adjusting the temperature to 134 ℃, and keeping the temperature for 30 minutes;
s2: the rotating speed of the stirrer is increased to 600rpm, the temperature is 210 ℃, a vacuum pump is started to enable the vacuum degree of the reaction kettle to reach-0.5 MPa, and the state is maintained for 30 minutes; the pressure is released to ensure that the pressure in the reaction kettle reaches the standard atmospheric pressure; the rotating speed of the stirrer is increased to 1000rpm, and the pressure in the reaction kettle is kept at the standard atmospheric pressure; adding 46 parts of cross-linking agent diethylenetriamine, stirring and mixing to ensure that the hydrophilic-lipophilic balance value of the reaction kettle solution is 7.5, and standing for 3 hours under the condition of heat preservation;
s3: the rotating speed of the stirrer is increased to 1200rpm, the pressure of the reaction kettle is increased to reach 2 times of standard atmospheric pressure, the temperature is 340 ℃, and the reaction kettle is kept for 3 hours; and after the reaction is finished, reducing the pressure in the reaction kettle to the standard atmospheric pressure, reducing the rotating speed of the reaction kettle to 0, reducing the temperature of the reaction kettle to be below the combustion temperature of the flame-retardant EPS foam board, then discharging and pouring the flame-retardant EPS foam board in the mold, and finally putting the flame-retardant EPS foam board into a molding press to obtain the auxiliary layer 2 and the support body 3.
Compared with the example 1, the comparative example does not contain silver nanoparticles and nano-silica, and lacks the ionization effect of alpha ions generated by alpha rays and radon decay, although the comparative example adds 2, 6-di-tert-butyl-4-methylphenol for improving the effects of oxidation resistance and aging resistance, the aging resistance of the comparative example is obviously reduced compared with the example 1, and simultaneously, the addition of the silver nanoparticles and the nano-silica in the example 1 can also obviously enhance the strength and antibacterial property of the auxiliary layer 2 and the support 3.
Comparative example 2
S1: adding 220 parts of ultrapure water with the conductivity of 1.6 mu S/cm into the reaction kettle, starting a stirrer in the reaction kettle at the rotating speed of 80 rpm, and starting a heater to raise the temperature in the reaction kettle to 100 ℃; sequentially adding 430 parts of ABS rubber powder, 110 parts of ethanol and 90 parts of dibutyl phthalate, uniformly stirring, adjusting the pH value to 7, adjusting the rotating speed of a stirrer to 250 rpm, adding 40 parts of calcium-zinc composite heat stabilizer and 28 parts of 2, 6-di-tert-butyl-4-methylphenol, adjusting the temperature to 150 ℃, and keeping the temperature for 45 minutes;
s2: 155 parts of nano silicon dioxide are taken for crushing, and the particle size of the powder is 2800 meshes; adding 58 parts of antimony trioxide, uniformly mixing, and flatly paving in a tray with the thickness of 12 mm;
s3: dissolving the mixed powder treated in the step 2 in a step S1, increasing the rotating speed of a stirrer to 650 rpm at 235 ℃, starting a vacuum pump to enable the vacuum degree of the reaction kettle to reach-0.4 MPa, and keeping the state for 35 minutes; the pressure is released to ensure that the pressure in the reaction kettle reaches the standard atmospheric pressure; the rotating speed of the stirrer is increased to 1100 rpm, and the pressure in the reaction kettle is kept at the standard atmospheric pressure; adding 55 parts of benzoyl peroxide as a crosslinking agent, stirring and mixing to enable the hydrophilic-lipophilic balance value of the solution in the reaction kettle to be 8, and standing for 3.5 hours under heat preservation;
s4: the rotating speed of the stirrer is increased to 1300rpm, the pressure of the reaction kettle is increased to reach 2 times of standard atmospheric pressure, the temperature is 350 ℃, and the reaction kettle is kept for 3.5 hours; and after the reaction is finished, reducing the pressure in the reaction kettle to the standard atmospheric pressure, reducing the rotating speed of the reaction kettle to 0, reducing the temperature of the reaction kettle to be below the combustion temperature of the flame-retardant EPS foam board, then discharging and pouring the flame-retardant EPS foam board in the mold, and finally putting the flame-retardant EPS foam board into a molding press to obtain the auxiliary layer 2 and the support body 3.
Compared with example 2, comparative example 2, in which silver nanoparticles were not added and ionization of alpha ions by decay of alpha rays and radon gas was absent, produced a slip in strength properties while comparative example 2 did not have antibacterial effects accompanied by silver ions, although other components were not reduced.
Comparative example 3:
s1: adding 250 parts of ultrapure water with the conductivity of 1.8 mu S/cm into the reaction kettle, starting a stirrer in the reaction kettle at the rotating speed of 100rpm, and starting a heater to raise the temperature in the reaction kettle to 110 ℃; sequentially adding 500 parts of ABS rubber powder, 145 parts of ethanol and 125 parts of dibutyl phthalate, uniformly stirring, adjusting the pH value to 7.5, adjusting the rotating speed of a stirrer to 300rpm, adding 47 parts of calcium-zinc composite heat stabilizer and 34 parts of 2, 6-di-tert-butyl-4-methylphenol, adjusting the temperature to 168 ℃, and keeping the temperature for 60 minutes;
s2: 290 parts of silver nanoparticles and 184 parts of nano silicon dioxide are taken for crushing, and the particle size of the powder is 3000 meshes; adding 82 parts of antimony trioxide and uniformly mixing;
s3: dissolving the mixed powder treated in the step 2 in step S1, increasing the rotating speed of a stirrer to 700rpm at the temperature of 260 ℃, starting a vacuum pump to enable the vacuum degree of the reaction kettle to reach-0.2 MPa, and keeping the state for 40 minutes; the pressure is released to ensure that the pressure in the reaction kettle reaches the standard atmospheric pressure; the rotating speed of the stirrer is increased to 1200rpm, and meanwhile, the pressure in the reaction kettle is kept at the standard atmospheric pressure; adding 64 parts of cross-linking agent vinyl triethoxysilane, stirring and mixing to enable the hydrophilic-lipophilic balance value of the reaction kettle solution to be 8.5, and standing for 4 hours under heat preservation;
s4: the rotating speed of the stirrer is increased to 1400rpm, the pressure of the reaction kettle is increased to reach 2 times of standard atmospheric pressure, the temperature is 360 ℃, and the reaction kettle is kept for 4 hours; and after the reaction is finished, reducing the pressure in the reaction kettle to the standard atmospheric pressure, reducing the rotating speed of the reaction kettle to 0, reducing the temperature of the reaction kettle to be below the combustion temperature of the flame-retardant EPS foam board, then discharging and pouring the flame-retardant EPS foam board in the mold, and finally putting the flame-retardant EPS foam board into a molding press to obtain the auxiliary layer 2 and the support body 3.
Compared with the example 3, the composition is unchanged, the ionization of alpha ions generated by the decay of alpha rays and radon gas is lacked, the ionization of silver ions is reduced, the ionization completely depends on the oxidation of the silver ions, and the antibacterial performance is obviously reduced compared with the example 3.
The strength parameters of the above examples were compared with those of the control examples as follows:
Figure 297695DEST_PATH_IMAGE001
in conclusion, the auxiliary layer 2 and the support body 3 prepared by the steps have good strength, ageing resistance and antibacterial property, so that the strength and ageing resistance of the traditional EPS foam board are improved, all the characteristics of the EPS foam board are kept, other protective layers do not need to be added on the outer surface of the EPS foam board in the construction process, the EPS foam board can be directly constructed, the problem of inconvenient construction of the traditional EPS foam board is avoided, and the application range of the EPS foam board is expanded.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (3)

1. The EPS foam board is a flame-retardant EPS foam board (1), and is characterized in that two opposite surfaces of the flame-retardant EPS foam board (1) are respectively coated with an auxiliary layer (2), the flame-retardant EPS foam board (1) is provided with a plurality of uniformly distributed through holes, support bodies (3) are arranged in the through holes, the two auxiliary layers (2) are fixedly arranged through the support bodies (3), and the auxiliary layers (2) and the support bodies (3) are made of the same material and are integrally formed; the shape of the through hole is the same as that of the support body (3), and two ends of the through hole are flared and the middle of the through hole is closed;
the auxiliary layer (2) and the support body (3) are prepared from the following raw materials in parts by weight:
350-500 parts of ABS rubber powder, 46-82 parts of antimony trioxide, 30-47 parts of calcium-zinc composite heat stabilizer, 210-290 parts of silver nanoparticles, 134-184 parts of nano silicon dioxide, 71-145 parts of ethanol with the volume fraction of more than 90%, 51-125 parts of dibutyl phthalate, 46-64 parts of cross-linking agent and 20-34 parts of 2, 6-di-tert-butyl-4-methylphenol;
the preparation steps of the auxiliary layer (2) and the support body (3) are as follows:
s1: adding 200-250 parts of ultrapure water with the conductivity of 1.2 muS/cm-1.8 muS/cm into a reaction kettle, starting a stirrer in the reaction kettle at the rotation speed of 50-100 rpm, and starting a heater to raise the temperature in the reaction kettle to 89-110 ℃; sequentially adding ABS rubber powder, ethanol and dibutyl phthalate, uniformly stirring, adjusting the pH value to 6.5-7.5, adjusting the rotating speed of a stirrer to 200-300 rpm, adding a calcium-zinc composite heat stabilizer and 2, 6-di-tert-butyl-4-methylphenol, adjusting the temperature to 134-168 ℃, and keeping the temperature for 30-60 minutes;
s2: crushing silver nanoparticles and nano silicon dioxide, wherein the particle size of the powder is 2500-3000 meshes; adding antimony trioxide, uniformly mixing, flatly paving in a tray, wherein the flatly-paved thickness is 10-15 mm, and irradiating for 30-60 minutes by adopting alpha rays with the dosage of 5-6 kGy and the energy of 6-7 MeV;
s3: dissolving the mixed powder treated in the step 2 in step S1, increasing the rotating speed of a stirrer to 600-700 rpm, controlling the temperature to 210-260 ℃, starting a vacuum pump to enable the vacuum degree of the reaction kettle to reach-0.5-0.2 MPa, and keeping the state for 30-40 minutes; pressure relief and introduction of concentration70 to 150 Bq.m-3Radon gas, so that the pressure in the reaction kettle reaches the standard atmospheric pressure, and standing for more than 3.8 days under the condition of heat preservation; the rotating speed of the stirrer is increased to 1000 rpm-1200 rpm, and the pressure in the reaction kettle is kept at the standard atmospheric pressure; adding a cross-linking agent, stirring and mixing to ensure that the hydrophilic-lipophilic balance value of the solution in the reaction kettle is 7.5-8.5, and standing for 3-4 hours under heat preservation;
s4: the rotating speed of the stirrer is increased to 1200 rpm-1400 rpm, the pressure of the reaction kettle is increased to reach 2 times of standard atmospheric pressure, the temperature is 340-360 ℃, and the reaction kettle is kept for 3-4 hours; and after the reaction is finished, reducing the pressure in the reaction kettle to the standard atmospheric pressure, reducing the rotating speed of the reaction kettle to 0, reducing the temperature of the reaction kettle to be below the combustion temperature of the flame-retardant EPS foam board, then discharging and pouring the flame-retardant EPS foam board in the mold, and finally putting the flame-retardant EPS foam board into a molding press to obtain the auxiliary layer (2) and the support body (3).
2. The EPS foam board of claim 1, wherein the flame-retardant EPS foam board (1) is provided with a plurality of uniformly distributed protrusions (11) at the contact position with the auxiliary layer (2), and the protrusions and the flame-retardant EPS foam board (1) are integrally formed.
3. An EPS foam board as claimed in claim 1, wherein said cross-linking agent is any one of diethylenetriamine, benzoyl peroxide, vinyltriethoxysilane.
CN201811298382.5A 2018-11-02 2018-11-02 EPS foam board Active CN109486090B (en)

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