CN112297321A

CN112297321A - Insulation board foaming equipment, insulation board production line and production process

Info

Publication number: CN112297321A
Application number: CN202011085393.2A
Authority: CN
Inventors: 陆童敏; 谢亚春
Original assignee: Guangdong Huarui Environmental Protection Materials Co ltd
Current assignee: Guangdong Huarui Environmental Protection Materials Co ltd
Priority date: 2020-10-12
Filing date: 2020-10-12
Publication date: 2021-02-02
Anticipated expiration: 2040-10-12
Also published as: CN112297321B

Abstract

The invention belongs to the technical field of foaming, and particularly relates to a thermal insulation board foaming device, a thermal insulation board production line and a production process. The invention provides a heat-insulation board foaming device; the device comprises an upper non-woven fabric feeding frame, a lower non-woven fabric feeding frame is arranged below the upper non-woven fabric feeding frame in parallel, the upper non-woven fabric feeding frame and the lower non-woven fabric feeding frame are fixed on foaming coating equipment through a conveying device, and the foaming coating equipment is connected with a mixing kettle through a first pipeline; the mixing kettle is connected with the reaction kettle A through a second pipeline, and the second pipeline is connected with a first flowmeter; the mixing kettle is connected with a reaction kettle B through a third pipeline, and the third pipeline is connected with a second flowmeter; the preparation raw materials in the reaction kettle A comprise the following components in parts by weight: 10-30 parts of modified phenolic resin and 5-20 parts of organic silicon; the preparation raw materials in the reaction kettle B comprise the following components in parts by weight: 2-5 parts of isocyanate modified carbon material, 0.0375-0.2 part of potassium persulfate and 20-30 parts of solvent.

Description

Insulation board foaming equipment, insulation board production line and production process

Technical Field

The invention belongs to the technical field of foaming, and particularly relates to a thermal insulation board foaming device, a thermal insulation board production line and a production process.

Background

Along with the social development, the population increases, and the requirements on the height and the density of a building are higher and higher, so that the problem of building safety fire prevention is solved, and the prevention of fire becomes one of the problems which need to be paid attention to in the building process.

The development of society brings the technological progress, and a plurality of novel materials appear in the fireproof materials at the present stage. However, the appearance of these new thermal insulation materials also brings with it environmental problems, such as the use of fluorine-containing fire-proof materials, which cause environmental hazards due to the release of fluorine during the construction process.

In order to meet the requirements of high fire-proof grade, safety and environmental protection, a fire-proof heat-insulating material which can be used at high temperature and can also solve the problems of good heat resistance and moderate heat conductivity coefficient in the using process, and equipment and a production process for preparing the fire-proof heat-insulating material are urgently needed.

Disclosure of Invention

In order to solve the technical problems, the invention provides insulation board foaming equipment in a first aspect, which comprises an upper non-woven fabric feeding frame, a lower non-woven fabric feeding frame is arranged below the upper non-woven fabric feeding frame in a parallel position, the upper non-woven fabric feeding frame and the lower non-woven fabric feeding frame are fixed on foaming coating equipment through a conveying device, and the foaming coating equipment is connected with a mixing kettle through a first pipeline;

the mixing kettle is connected with the reaction kettle A through a second pipeline, and the second pipeline is connected with a first flowmeter; the mixing kettle is connected with a reaction kettle B through a third pipeline, and the third pipeline is connected with a second flowmeter;

the foaming coating equipment is electrically connected with a foaming forming box, the outer side of the foaming forming box is provided with a heat-insulating layer, and an upper protection plate and a lower protection plate are arranged in the foaming forming box; the upper part of the upper protection plate is provided with a temperature measuring device, and the other end of the temperature measuring device is connected with the power device through a lead;

the foaming molding box is connected with a winding machine through electric connection, and one end of the winding machine, which is far away from the foaming molding box, is connected with needling equipment; the other end of the needling equipment is electrically connected with the cutting equipment, and a finished product is obtained through the cutting equipment.

As a preferable technical proposal, the foaming molding box is provided with a hot air flow leading-in pipe.

As a preferable technical scheme, the hot air flow inlet pipe is used for conveying heat generated by the power device into the foaming forming box.

As a preferable technical solution, the flow meter is one of an orifice plate flow meter, a venturi flow meter, a pitot tube flow meter, a turbine flow meter and an electromagnetic flow meter.

As a preferred technical scheme, the upper protection plate and the lower protection plate are fixedly connected with the foaming forming box in a movable mode.

As a preferred technical scheme, the power device comprises a power box, a water storage tank and an oil storage tank.

The invention provides a production line of insulation boards, which comprises the insulation board foaming equipment.

The third aspect of the invention provides a production process of an insulation board, which comprises the following steps:

(1) the non-woven fabric enters foaming coating equipment through an upper non-woven fabric discharging frame and a lower non-woven fabric discharging frame;

(2) the mixing kettle is connected with the reaction kettle A through a second pipeline, and the second pipeline is connected with a first flowmeter; the mixing kettle is connected with a reaction kettle B through a third pipeline, and the third pipeline is connected with a second flowmeter; controlling the amount of the materials entering the mixing kettle through the first flowmeter and the second flowmeter;

(3) the mixed materials enter foaming coating equipment to coat the non-woven fabrics, the coated non-woven fabrics enter a foaming forming box, an upper protection plate and a lower protection plate are arranged in the foaming forming box, an upper layer of non-woven fabrics is fixedly connected below the upper protection plate, a lower non-woven fabrics is fixedly connected above the lower protection plate, the upper protection plate and the lower protection plate are folded to form a structure in accordance with the shape of the insulation board, and the formed silicon phenol board is moved out of the foaming forming box and enters a winding machine under the covering of the upper layer of non-woven fabrics and the lower layer of non-woven;

(4) and the silicon-phenol plate entering the winding machine enters needling equipment and then enters cutting equipment, a cutting station is arranged on the cutting equipment, a pressing plate is arranged on the cutting station and used for pressing the silicon-phenol insulation plate, and a finished product is obtained after the silicon-phenol plate is cut by the cutting equipment.

As a preferred technical solution, the preparation raw materials in the reaction kettle a in the step (2) comprise: modified phenolic resin and organic silicon.

As a preferred technical solution, the preparation raw materials in the reaction kettle B in the step (2) include: isocyanate modified carbon material, potassium persulfate and solvent.

Has the advantages that:

(1) according to the insulation board foaming equipment disclosed by the invention, the foaming material can be uniformly coated on the insulation board, and the safety and high application value of the fireproof board in the use process are ensured by utilizing the excellent fireproof performance, low shrinkage rate and low absorption rate of the material;

(2) the insulation board used in the application is prepared from environment-friendly and pollution-free materials, is harmless to the environment, is safe in preparation raw materials, and meets the requirement of environmental protection and green;

(3) the fireproof plate prepared by the application is free of acid and alkali, the pH value is neutral, pollution in the preparation process is avoided, and corrosive influence of the prepared fireproof plate on external components is also prevented.

Drawings

FIG. 1 is a schematic structural view of the insulation board foaming device of the present invention;

in the figure:

1. an upper non-woven fabric feeding frame, 2 lower non-woven fabric feeding frames, 3 foaming coating equipment, 4 mixing kettles, 5.A reaction kettle, 6.B reaction kettle, 7. flowmeter 1, 8.

flowmeter

2, 9. heat preservation layer, 10 foaming forming box, 11 temperature measuring device, 12 power device, 13 upper protection plate, 14 lower protection plate, 15 hot air flow inlet pipe, 16 wind-up machine, 17 needling equipment, 18 cutting equipment, 19 finished product

Detailed Description

The invention provides insulation board foaming equipment, which comprises an upper-layer non-woven fabric feeding frame, wherein a lower-layer non-woven fabric feeding frame is arranged below the upper-layer non-woven fabric feeding frame in a parallel position;

In some preferred embodiments, the foaming and forming box is provided with a hot air flow inlet pipe.

In some preferred embodiments, the hot air inlet pipe is used for conveying heat generated by the power device into the foaming forming box.

In some preferred embodiments, the flow meter is one of an orifice plate flow meter, a venturi flow meter, a pitot tube flow meter, a turbine flow meter, and an electromagnetic flow meter.

In some preferred embodiments, the upper protection plate and the lower protection plate are fixed with the foaming forming box through movable connection.

In some preferred embodiments, the power device comprises a power box, a water storage tank and an oil storage tank.

In some preferred embodiments, the preparation raw materials in the reaction kettle A in the step (2) comprise: modified phenolic resin and organic silicon.

In some preferred embodiments, the preparation raw materials in the reaction kettle B in the step (2) comprise: isocyanate modified carbon material, potassium persulfate and solvent.

In some preferred embodiments, the preparation raw materials in the a reaction kettle comprise, by weight: 10-30 parts of modified phenolic resin and 5-20 parts of organic silicon.

In some preferred embodiments, the raw materials prepared in the B reactor comprise, in parts by weight: 2-5 parts of isocyanate modified carbon material, 0.0375-0.2 part of potassium persulfate and 20-30 parts of solvent.

In some preferred embodiments, the modified phenolic resin is selected from maleimide modified phenolic resins.

In some preferred embodiments, the modified phenolic resin is selected from maleimide modified allylated phenolic resins.

In some preferred embodiments, the silicone is selected from the group consisting of: at least one of PSI-500, PSI-510, PSI-5220, and PSI-512.

Preferably, the silicone is selected from PSI-512.

Organosilicon PSI-512, available from Shanghai philosophy chemical materials, Inc.

The application field of the phenolic resin serving as matrix resin with poor heat resistance has certain limitation, the applicant is obtained through a large amount of experimental researches, the PSI-512 organic silicon material and the maleimide modified allylated phenolic resin are selected to act to introduce Si into the interior of a phenolic resin structure through chemical reaction, the PSI-512 organic silicon adopted by the application loads Si into the interior of a phenolic resin molecular chain through micro-crosslinking between the silicon I-512 organic silicon and the phenolic resin in the reaction process, a part of C-C bonds in a formed high molecular chain are replaced by Si-O bonds, more heat required by decomposition between the Si-O bonds is obtained, the heat resistance of the traditional phenolic resin is improved, experiments prove that the temperature of the phenolic resin can be changed to a higher degree by adding the PSI-512 organic silicon in the scheme of the application compared with the temperature of the traditional inorganic silicon material through modification, the thermal conductivity of the phenolic resin is reduced.

In addition, the applicant has unexpectedly found that the PSI-512 silicone acts with the maleimide-modified allylated phenolic resin in a weight ratio of PSI-512 silicone to maleimide-modified allylated phenolic resin of 1: 1.2-2.3, the problem of poor toughness of the maleimide modified allylated phenolic resin can be solved; the weight ratio of the PSI-512 organic silicon to the maleimide modified allylated phenolic resin is 1: 1.2-2.3, the flexibility of the original molecule is changed by regulating and controlling the short chain structure grafted on the formed carbon-carbon long chain, the toughness of the molecular chain is improved, the stability of the phenolic resin is enhanced, and the application value of the phenolic resin as a fireproof material is improved; and the weight ratio of the PSI-512 organic silicon to the maleimide modified allylated phenolic resin is 1: 1.2-2.3, the reaction of PSI-512 organosilicon can be reduced by mixing the weight of reactants, and the occurrence of side reaction in the system can be reduced.

However, in the experimental process, the applicant finds that when the PSI-512 organic silicon reacts with the maleimide modified allylated phenolic resin, the required curing temperature is higher, and when the curing temperature is higher, the unstable condition of the organic silicon caused by high bond energy can occur, so that the phenolic resin is not easy to process in the implementation process of the fireproof insulation board, and the high curing temperature causes the effectiveness of the reaction raw materials to be reduced.

The preparation raw materials of the maleimide modified allylated phenolic resin comprise: allyl chloride, thermoplastic phenolic resin, N '-4, 4' -diphenylmethane bismaleimide, N-butyl alcohol and potassium hydroxide.

The thermoplastic phenolic resin, the brand number HK-316, is purchased from Jining HuaKai resin Co.

The preparation method of the maleimide modified allylated phenolic resin refers to the following steps:

(1) adding thermoplastic phenolic resin into a three-neck flask, then adding n-butyl alcohol, and heating in an oil bath at 60-90 ℃ until the thermoplastic phenolic resin is dissolved; (2) adding potassium hydroxide into the mixture obtained in the step (1), stirring and dissolving the mixture, then cooling the mixture to 35-40 ℃, dropwise adding allyl chloride, heating the mixture to 60-80 ℃ after the dropwise adding is finished, and reacting the mixture for 3-6 hours; (3) after the reaction is finished, filtering, washing and distilling the product obtained in the step (2) under reduced pressure to obtain allylation phenolic resin; (4) blending the allylated phenolic resin treated in the step (3) with N, N '-4, 4' -diphenylmethane bismaleimide at the temperature of 120-140 ℃ to obtain the maleimide modified allylated phenolic resin.

In some preferred embodiments, the carbon material in the isocyanate modified carbon material is selected from at least one of carbon nanotubes, graphene, carbon fibers, and glassy carbon.

Preferably, the carbon material is selected from carbon nanotubes.

Carbon nanotube

Carbon nanotubes, also known as buckytubes, are one-dimensional quantum materials with a special structure (radial dimension is nanometer magnitude, axial dimension is micrometer magnitude, both ends of the tube are basically sealed). Carbon nanotubes are coaxial circular tubes consisting of several to tens of layers of carbon atoms arranged in a hexagonal pattern.

The structure of carbon nanotubes is similar to that of polymer materials, but is much more stable than polymer materials. Carbon nanotubes are the highest specific strength material that can be produced at present. If other engineering materials are used as a matrix and the carbon nano tube is prepared into the composite material, the composite material can show good strength, elasticity, fatigue resistance and isotropy, and the performance of the composite material is greatly improved.

In some preferred embodiments, the carbon nanotubes have a length of 2 to 15 μm.

In some preferred embodiments, the carbon nanotubes have an average length of 5 μm.

The carbon nano tube, catalog number NTP8022, is purchased from Shenzhen Nangang Limited.

In some preferred embodiments, in the isocyanate-modified carbon nanotube, the isocyanate is selected from at least one of toluene diisocyanate, diphenylmethane diisocyanate, 1, 6-hexamethylene diisocyanate, methylene di-p-phenyl diisocyanate, 2-methyl-5-nitrophenyl isocyanate, 4-maleimidophenyl isocyanate, and 3-isopropenyl- α, α -dimethylbenzyl isocyanate.

Preferably, the isocyanate is selected from 3-isopropenyl-alpha, alpha-dimethylbenzyl isocyanate.

The 3-isopropenyl-alpha, alpha-dimethylbenzyl isocyanate has a CAS number of 2094-99-7.

The preparation method of the isocyanate modified carbon nano tube refers to the following steps:

the first step is as follows: weighing 5-10g of carbon nano tube in a three-neck flask, adding 98% concentrated sulfuric acid and 67% concentrated nitric acid in percentage by mass into the three-neck flask, wherein the volume ratio of the two is 3: 1, ultrasonic dispersion is carried out for 60-90 minutes, condensation reflux is carried out for 2-4 hours at the temperature of 60 ℃, then the obtained reactant is cooled, washed to be neutral, and after drying, the obtained modified carbon nano tube is reserved; the second step is that: taking 1-3g of the modified carbon nano tube obtained in the first step, adding 150 ml of toluene, carrying out dehydration treatment on the toluene, and carrying out ultrasonic dispersion for 30-60 minutes under the protection of nitrogen; heating in oil bath at 60-80 deg.c, adding 3-isopropenyl-alpha, alpha-dimethyl benzyl isocyanate in 30-40g, stirring to react for 5-10 hr, suction filtering, eliminating 3-isopropenyl-alpha, alpha-dimethyl benzyl isocyanate in the system with toluene to obtain modified carbon nanotube, drying and grinding to obtain solid isocyanate modified carbon nanotube for use.

The problem of dispersion of carbon nano-materials among organic matters is an important problem for solving the wide application of the carbon nano-tubes, and the isocyanate modified carbon nano-tubes adopted in the application can ensure the dispersion performance of the carbon nano-tubes in a system and avoid the inorganic matter agglomeration phenomenon in a silicon phenol fireproof insulation board material system.

The applicant finds that when the usage amount of the 3-isopropenyl-alpha, alpha-dimethylbenzyl isocyanate modified carbon nano tube is 15 wt% of the weight of the maleimide modified allylation phenolic resin, the application of the carbon nano tube in the preparation process of the silicon phenol fireproof insulation board can not only ensure that the modified carbon nano tube has better dispersion performance, but also improve the heat resistance of the silicon phenol fireproof insulation board, and speculates possible reasons: in the process of combining the carbon nano tube and the 3-isopropenyl-alpha, alpha-dimethylbenzyl isocyanate, the entanglement capacity between carbon nano tube aggregates can be damaged due to strong shearing force in the melting process, the interaction force between the carbon nano tubes is weakened, and instead, the compatibility of the 3-isopropenyl-alpha, alpha-dimethylbenzyl isocyanate and phenolic resin in the carbon nano tubes is promoted, so that the interface acting force between the carbon nano tubes and the polar nodes of the phenolic resin high molecular chain is promoted to be formed, and the active group carried by the 3-isopropenyl-alpha, alpha-dimethylbenzyl isocyanate can promote the acting force between the polar nodes to be enhanced, the bond energy to be improved and the heat resistance of the phenolic resin to be further improved.

However, in the experimental process, the applicant unexpectedly finds that the tensile property of the silicon-phenol fireproof insulation board can be improved by selecting the carbon nano tube with the average length of 5 micrometers; presumably, the reason is: after the carbon nano tube with the average length of 5 mu m is modified, the carbon nano tube can penetrate into the polymer chain segments during reaction in a system, so that the irregular movement of the molecular chain of the phenolic resin is greatly limited, the movement stability of the molecules is enhanced, the interaction force among the molecules is enhanced, and the tensile strength of the silicon phenol fireproof insulation board is improved.

In some preferred embodiments, the solvent is selected from at least one of ethylene glycol, ethanol, tetrahydrofuran, N-dimethylformamide, water, and toluene.

Preferably, the solvent is selected from N, N-dimethylformamide.

In some preferred embodiments, the amount of potassium persulfate used is 0.75 to 1 weight percent based on the weight of PSI-512 silicone.

In order to change the heat resistance of the fireproof and heat-insulating silicon-phenol board in the experimental process, PSI-512 organic silicon is adopted to react with maleimide modified allylic phenolic resin, but in the experimental process, the curing temperature is higher after the reaction of the two substances, and the stability of the system is reduced due to the overhigh curing temperature. The applicant finds that the curing temperature of the fireproof insulation board made of the silicon phenol can be changed by selecting potassium persulfate as an initiator in the experimental process, and the reason is presumed as follows: and (2) adding potassium persulfate, wherein a part of potassium persulfate is used as an initiator to initiate the reaction of PSI-512 organic silicon and maleimide modified allylated phenolic resin, but the potassium persulfate is oxidized by itself, so that side reactions existing in a system influence the crystallization performance of the phenolic resin and influence the regularity among molecules, and a better curing effect can be obtained when the epoxy resin is cured at the temperature of 60-80 ℃.

The applicant unexpectedly finds that when the weight of potassium persulfate adopted in the application is 0.75-1 wt% of that of PSI-512 organosilicon, the water absorption rate of the silicon phenol fireproof insulation board can be reduced, and the applicant speculates that: the cross-linking reaction between the PSI-512 organic silicon and the maleimide modified allylation phenolic resin is influenced by the dosage of the potassium persulfate, and the PSI-512 organic silicon and the maleimide modified allylation phenolic resin in the system react to form a three-dimensional network structure with non-polar long chains intertwined with each other along with the initiation of the potassium persulfate, so that the contact probability of hydrophilic groups and water molecules in the system is hindered, and the water absorption of the silicon phenol fireproof heat-insulating material is obviously reduced.

However, when the weight of the potassium persulfate selected in the system is 0.75-1 wt% of that of PSI-512 organosilicon, the heat resistance of the silicon phenol fireproof insulation board is affected due to side reaction.

The present invention will be specifically described below by way of examples. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention.

In addition, the starting materials used are all commercially available, unless otherwise specified.

Examples

Example 1

Referring to a schematic structural diagram shown in fig. 1, the invention provides insulation board foaming equipment, which comprises an upper-layer non-woven fabric discharging frame 1, a lower-layer non-woven fabric discharging frame 2 is arranged below the upper-layer non-woven fabric discharging frame 1 in a parallel position, the upper-layer non-woven fabric discharging frame 1 and the lower-layer non-woven fabric discharging frame 2 are fixed on foaming coating equipment 3 through a conveying device, and the foaming coating equipment 3 is connected with a mixing kettle 4 through a first pipeline;

the mixing kettle 4 is connected with a reaction kettle A5 through a second pipeline, and the second pipeline is connected with a first orifice plate flowmeter 7; the mixing kettle 4 is connected with a B reaction kettle 6 through a third pipeline, and a second orifice plate flowmeter 8 is connected to the third pipeline;

the foaming coating equipment 3 is electrically connected with a foaming forming box 10, the outer side of the foaming forming box 10 is provided with a heat-insulating layer 9, and an upper protection plate 13 and a lower protection plate 14 are arranged in the foaming forming box 10; the upper part of the upper protection plate 13 is provided with a temperature measuring device 11, and the other end of the temperature measuring device 11 is connected with a power device 12 through a lead;

the foaming molding box 10 is connected with a winding machine 16 through electric connection, and one end of the winding machine 16 far away from the foaming molding box 10 is connected with needling equipment 17; the other end of the needling device 17 is connected with a cutting device 18 through electrical connection, and a finished product 19 is obtained through the cutting device.

The foaming forming box 10 is provided with a hot air flow inlet pipe 15.

The upper protection plate 13 and the lower protection plate 14 are fixedly connected with the foaming forming box 10 through hinges.

An insulation board production line comprises the insulation board foaming equipment.

A production process of an insulation board comprises the following steps:

(1) the non-woven fabric enters foaming coating equipment 3 through an upper non-woven fabric feeding frame 1 and a lower non-woven fabric feeding frame 2;

(2) the mixing kettle 4 is connected with a reaction kettle A5 through a second pipeline, and the second pipeline is connected with a first flowmeter 7; the mixing kettle 4 is connected with a B reaction kettle 6 through a third pipeline, and the third pipeline is connected with a second flowmeter 8; the amount of the materials entering the mixing kettle 4 is controlled by a first flow meter 7 and a second flow meter 8;

(3) the mixed materials enter a foaming coating device 3 to coat the non-woven fabrics, the coated non-woven fabrics enter a foaming forming box 10, an upper protection plate 13 and a lower protection plate 14 are arranged in the foaming forming box 10, an upper layer of non-woven fabrics is fixedly connected below the upper protection plate 13, a lower layer of non-woven fabrics is fixedly connected above the lower protection plate 14, the upper protection plate 13 and the lower protection plate 14 are folded to form a structure which is consistent with the shape of the insulation board, and the formed silicon phenol board is moved out of the foaming forming box 10 and enters a winding machine 16 under the covering of the upper layer of non-woven fabrics and the lower layer;

(4) the silicon phenol plate entering the winding machine 16 enters the needling equipment 17 and then enters the cutting equipment 18, a cutting station is arranged on the cutting equipment 18, a pressing plate is arranged on the cutting station and used for pressing the silicon phenol insulation plate, and a finished product 19 is obtained after the silicon phenol insulation plate is cut by the cutting equipment 18.

Example 2

The specific implementation mode of the insulation board foaming equipment is the same as that of the embodiment 1.

The utility model provides an heated board production technology, the concrete step refers to embodiment 1, the difference lies in:

the preparation raw materials in the reaction kettle A comprise the following components in parts by weight: 10 parts of maleimide modified allylation phenolic resin and 10 parts of PSI-5125 parts of maleimide modified allylation phenolic resin;

the preparation raw materials in the reaction kettle B comprise the following components in parts by weight: 2 parts of 3-isopropenyl-alpha, alpha-dimethylbenzyl isocyanate modified carbon nano tube, 0.0375 part of potassium persulfate and 20 parts of N, N-dimethylformamide.

The average length of the carbon nano tube is 5 mu m.

Organosilicon PSI-512, available from Shanghai philosophy chemical materials, Inc.; 3-isopropenyl-alpha, alpha-dimethylbenzyl isocyanate CAS number 2094-99-7; carbon nanotubes, catalog number NTP8022, purchased from nano port ltd, shenzhen, city; thermoplastic phenolic resin, brand HK-316, available from Jining HuaKai resin Co., Ltd.

(1) adding 30g of thermoplastic phenolic resin into a three-neck flask, then adding 150 ml of n-butanol, and heating in an oil bath at 60 ℃ until the resin is dissolved; (2) adding 0.5g of potassium hydroxide into the mixture obtained in the step (1), stirring and dissolving the mixture, then cooling the mixture to 35 ℃, dropwise adding 25g of allyl chloride, after the dropwise addition is finished, heating the mixture to 60 ℃, and reacting the mixture for 5 hours; (3) after the reaction is finished, filtering, washing and distilling the product obtained in the step (2) under reduced pressure to obtain allylation phenolic resin; (4) and (3) blending the allylated phenolic resin treated in the step (3) with 15g N, N '-4, 4' -diphenylmethane bismaleimide at 135 ℃ to obtain the maleimide modified allylated phenolic resin.

the first step is as follows: weighing 10g of carbon nano tube in a three-neck flask, adding 98% concentrated sulfuric acid and 67% concentrated nitric acid in mass fraction into the three-neck flask, wherein the volume ratio of the two is 3: 1, performing ultrasonic dispersion for 60 minutes, performing condensation reflux for 2.5 hours at the temperature of 60 ℃, then cooling the obtained reactant, washing to be neutral, and drying to obtain a modified carbon nano tube for later use; the second step is that: and (2) adding 150 ml of toluene into 3g of the modified carbon nanotube obtained in the first step, dehydrating the toluene, ultrasonically dispersing for 60 minutes under the protection of nitrogen, heating the mixture in an oil bath at 70 ℃, adding 30g of 3-isopropenyl-alpha, alpha-dimethylbenzyl isocyanate, stirring and reacting for 8 hours, performing suction filtration, removing the 3-isopropenyl-alpha, alpha-dimethylbenzyl isocyanate in a system by using the toluene to obtain the modified carbon nanotube, drying and grinding the modified carbon nanotube to obtain the solid isocyanate modified carbon nanotube for later use.

Example 3

the preparation raw materials in the reaction kettle A comprise the following components in parts by weight: 30 parts of maleimide modified allylated phenolic resin and 30 parts of PSI-51220 parts of maleimide modified allylated phenolic resin;

the preparation raw materials in the reaction kettle B comprise the following components in parts by weight: 5 parts of 3-isopropenyl-alpha, alpha-dimethylbenzyl isocyanate modified carbon nano tube, 0.2 part of potassium persulfate and 20 parts of N, N-dimethylformamide.

The average length of the carbon nano tube is 5 mu m.

Preparation of maleimide-modified allylated phenol resin reference was made to example 1.

Preparation method of isocyanate modified carbon nanotube referring to example 1.

Example 4

the preparation raw materials in the reaction kettle A comprise the following components in parts by weight: 23 parts of maleimide modified allylated phenolic resin and PSI-51212 parts;

the preparation raw materials in the reaction kettle B comprise the following components in parts by weight: 3.5 parts of 3-isopropenyl-alpha, alpha-dimethylbenzyl isocyanate modified carbon nano tube, 0.096 part of potassium persulfate and 20 parts of N, N-dimethylformamide.

The average length of the carbon nano tube is 5 mu m.

Example 5

The utility model provides an heated board production technology, the concrete step refers to embodiment 4, the difference lies in:

the amount of potassium persulfate in the B reaction kettle is 0.012 portion.

Example 6

the amount of potassium persulfate in the reaction kettle B is 1.2 parts.

Example 7

the average length of the carbon nanotubes in the reaction kettle B is 50 μm.

Organosilicon PSI-512, available from Shanghai philosophy chemical materials, Inc.; 3-isopropenyl-alpha, alpha-dimethylbenzyl isocyanate CAS number 2094-99-7; carbon nanotubes, cat # C139871, available from shanghai alatin biochemicals ltd; thermoplastic phenolic resin, brand HK-316, available from Jining HuaKai resin Co., Ltd.

Example 8

and the carbon nano tube in the reaction kettle B is an unmodified carbon nano tube.

Organosilicon PSI-512, available from Shanghai philosophy chemical materials, Inc.; carbon nanotubes, catalog number NTP8022, purchased from nano port ltd, shenzhen, city; thermoplastic phenolic resin, brand HK-316, available from Jining HuaKai resin Co., Ltd.

Example 9

the phenolic resin used in the A reaction kettle is not modified.

And (3) performance testing:

1. water absorption test: the fireproof silicon phenol heat-insulation boards prepared in the embodiments 2 to 9 are used for water absorption tests, the test method refers to GB/T8810-.

2. And (3) testing the heat conductivity coefficient: the silicon phenol fireproof insulation boards prepared in the embodiments 2 to 9 are used for heat conductivity coefficient tests, the test method refers to GB/T10801.1-2002, and the results are counted in the following table.

3. And (3) testing tensile property: the materials of the reaction vessels of examples 2-9A and B were mixed to prepare a film, and the tensile properties thereof were measured in accordance with ASTM D638, and the results were shown in the following table.

4. And (3) testing the curing effect: the silicon phenol fireproof insulation boards prepared in the embodiments 1 to 9 are placed in a 60 ℃ oven for curing effect test, the curing effect of the completely cured silicon phenol fireproof insulation board is specified to be excellent, the curing effect with molten colloid is good, the curing effect of the obviously uncured silicon phenol fireproof insulation board is poor, and the results are counted in the following table.

The test results show that the silicon phenol fireproof insulation board prepared by the method has good fireproof performance and low water absorption, the curing temperature of the silicon phenol fireproof insulation board prepared by the method is appropriate, the processing conditions are simple, and the application value and the application prospect are increased.

Finally, it should be understood that the above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat-insulation board foaming device is characterized by comprising an upper-layer non-woven fabric feeding frame (1), a lower-layer non-woven fabric feeding frame (2) is arranged below the upper-layer non-woven fabric feeding frame (1) in a parallel position, the upper-layer non-woven fabric feeding frame (1) and the lower-layer non-woven fabric feeding frame (2) are fixed on a foaming coating device (3) through a conveying device, and the foaming coating device (3) is connected with a mixing kettle (4) through a first pipeline;

the mixing kettle (4) is connected with a reaction kettle A (5) through a second pipeline, and the second pipeline is connected with a first flowmeter (7); the mixing kettle (4) is connected with a reaction kettle B (6) through a third pipeline, and the third pipeline is connected with a second flowmeter (8);

the foaming coating equipment (3) is electrically connected with a foaming forming box (10), a heat-insulating layer (9) is arranged on the outer side of the foaming forming box (10), and an upper protection plate (13) and a lower protection plate (14) are arranged in the foaming forming box (10); a temperature measuring device (11) is arranged at the upper part of the upper protection plate (13), and the other end of the temperature measuring device (11) is connected with the power device (12) through a lead;

the foaming molding box (10) is connected with a winding machine (16) through electric connection, and one end, far away from the foaming molding box (10), of the winding machine (16) is connected with needling equipment (17); the other end of the needling equipment (17) is connected with a cutting equipment (18) through electric connection, and a finished product (19) is obtained through the cutting equipment.

2. The insulation board foaming equipment according to claim 1, wherein the foaming forming box (10) is provided with a hot air flow inlet pipe (15).

3. The insulation board foaming apparatus according to claim 2, wherein the hot air flow inlet pipe (15) is used for conveying heat generated by the power device (12) into the foaming forming box (10).

4. The insulation board foaming device according to claim 1, wherein the flow meter is one of an orifice plate flow meter, a venturi flow meter, a pitot tube flow meter, a turbine flow meter and an electromagnetic flow meter.

5. The insulation board foaming device according to claim 1, wherein the upper protective plate (13) and the lower protective plate (14) are movably connected and fixed with the foaming forming box (10).

6. The insulation board foaming device according to claim 1, wherein the power device (12) comprises a power tank, a water storage tank and an oil storage tank.

7. An insulation board production line, characterized by comprising the insulation board foaming apparatus of claim 1.

8. A process for producing an insulation board according to claim 3, comprising the steps of:

(1) the non-woven fabric enters the foaming coating equipment (3) through an upper non-woven fabric feeding frame (1) and a lower non-woven fabric feeding frame (2);

(2) the mixing kettle (4) is connected with a reaction kettle A (5) through a second pipeline, and the second pipeline is connected with a first flowmeter (7); the mixing kettle (4) is connected with a reaction kettle B (6) through a third pipeline, and the third pipeline is connected with a second flowmeter (8); controlling the amount of the material entering the mixing kettle (4) through a first flowmeter (7) and a second flowmeter (8);

(3) the mixed materials enter a foaming coating device (3) to coat the non-woven fabrics, the coated non-woven fabrics enter a foaming forming box (10), an upper protection plate (13) and a lower protection plate (14) are arranged in the foaming forming box (10), an upper layer of non-woven fabrics is fixedly connected below the upper protection plate (13), a lower layer of non-woven fabrics is fixedly connected above the lower protection plate (14), the upper protection plate (13) and the lower protection plate (14) are folded to form a structure with the same shape as the insulation board, and the formed silicon phenol board is moved out of the foaming forming box (10) under the covering of the upper layer of non-woven fabrics and the lower layer of non-woven fabrics and enters a winding;

(4) the silicon phenol plate entering the winding machine (16) enters the needling equipment (17) and then enters the cutting equipment (18), a cutting station is arranged on the cutting equipment (18), a pressing plate is arranged on the cutting station and used for pressing the silicon phenol insulation plate, and a finished product (19) is obtained after the silicon phenol plate is cut by the cutting equipment (18).

9. The production process of the insulation board according to claim 8, wherein the preparation raw materials in the reaction kettle A in the step (2) comprise: modified phenolic resin and organic silicon.

10. The production process of the heat insulation board according to claim 8, wherein the preparation raw materials in the reaction kettle B in the step (2) comprise: isocyanate modified carbon material, potassium persulfate and solvent.