CN102060470A - Expanded vitrified micro-bead fireproof thermal-insulation board and preparation method thereof - Google Patents

Abstract

The invention relates to an expanded vitrified microbead fireproof insulation board and a preparation method thereof, belonging to the field of building materials. The present invention uses expanded vitrified microbeads as the main raw material, combines inorganic expanded vitrified microbeads with an organic binder, and forms a dense single-layer plate through molding and sintering the expanded vitrified microbeads. During the sintering process, the organic matter content of the fireproof insulation board is greatly reduced, which further improves the fireproof performance of the fireproof insulation board, and obtains a fireproof insulation board with better comprehensive performance. The expansion vitrified microbead fire-proof and heat-preservation board of the present invention has a simple preparation process, low thermal conductivity, high strength, superior fire-proof performance, low water absorption, excellent heat-preservation effect, and long service life of the fire-proof heat-preservation board. Deformation does not deteriorate, it is a better green, economical and environmentally friendly fireproof and thermal insulation material.

Description

A kind of expanded vitrified microbead fireproof insulation board and its preparation method

technical field

The invention relates to an expanded vitrified microbead fireproof insulation board and a preparation method thereof, belonging to the field of building materials.

Background technique

Thermal insulation is the most important energy-saving measure in building energy conservation. At present, there are many types of thermal insulation materials in my country, but there are generally problems of high water absorption, poor durability or flammability, and poor fire resistance. The former greatly reduces the thermal insulation performance of thermal insulation materials. It affects the effect of thermal insulation and increases the energy consumption of the air conditioning system, which will pose a threat to human life and safety.

In the prior art, there are mainly three types of building energy-saving thermal insulation materials used on a large scale: EPS, XPS, and PU. EPS, XPS, and PU are all organic thermal insulation materials, and they are all thermal insulation materials with superior performance. Their biggest advantage is light weight. , thermal insulation, good heat insulation. But the biggest defect is that it has poor fire safety, is easy to age, has large smoke and toxicity when burning, and has the danger of causing fire. In addition, there are rock (mineral) wool board, foam glass, phenolic foam board and ultra-light polystyrene particle insulation mortar. The cost of rock wool board is low, and it is non-combustible, non-toxic, small bulk density, and small thermal conductivity, but its strength is low, easy to absorb water, and the rock (mineral) wool board fiber is itchy to the skin during production and installation, and the working conditions of workers are poor; The compressive strength and moisture resistance of foam glass are very good, but the price is relatively high. At the same time, because foam glass is sensitive to thermal shock, it is not suitable for use in a state of rapid temperature changes; phenolic foam boards have only begun to be used on a large scale in recent years. Thermal insulation materials have excellent fireproof, moisture-proof, heat-insulating and heat-insulating properties, but they are expensive, and the production output is small, so they cannot be used on a large scale; although polystyrene particle insulation mortar has good fire-proof and heat-insulating effects, it is easy to deform and crack. Water vapor is not easy to discharge, and the construction is difficult.

At present, fire-proof and heat-insulating boards at home and abroad are mostly composed of multi-layer structures such as insulation layer and protective layer. A fast-setting non-combustible thermal insulation material for fire-proof thermal insulation boards". The material is neither easy to burn, but also has good thermal insulation performance and rapid solidification. However, the thermal insulation material of this invention uses more cement gelling materials, which has certain restrictions on the bulk density, and the compressive strength of the board is only about 0.1Mpa. Chinese patent application number 201010106017.7, the application date was February 5, 2010. The title of the invention patent is "a kind of cement polystyrene particle fireproof external wall insulation board". and polyphenylene particles as the main raw materials, adding expanded vitrified microbeads and other external wall insulation boards made by composite technology, the production process is relatively complicated, the weight part of the rapid hardening sulfoaluminate cement used in the insulation layer of the invention Reaching more than 80%, will inevitably lead to larger bulk density. Chinese patent application number 200710049511.2, published on January 14, 2009, the title of the invention patent is "fly ash thermal insulation and fireproof board and its production method". Heat-insulating fire-proof board, the fire-proof board has a three-layer structure, the fly ash used in it has a relatively high bulk density, and the heat preservation effect is average.

It can be seen that in the existing technology, no low-cost, low-density, high-fire-proof, high-performance thermal insulation board has been developed. Therefore, it is imperative to develop light-weight fireproof and thermal insulation materials with good performance and low cost.

Contents of the invention

Aiming at the deficiencies of the prior art, the object of the present invention is to provide a kind of expanded vitrified microbead fireproof insulation board and its preparation method, and its technical solution is:

Expanded vitrified microbead fireproof insulation board, fireproof insulation board is made of expanded vitrified microbeads as lightweight aggregate, phenolic resin or emulsified asphalt or polyacrylonitrile as binder, molded and sintered, and the fireproof insulation board is single In laminate shape, the material components of the expanded vitrified microbead fireproof insulation board are as follows in parts by mass:

100 parts of expanded vitrified microbeads;

Binder 50-200 parts;

0-10 parts of curing agent hexamethylenetetramine.

The preparation method of expanded vitrified microbead fireproof insulation board,

①Material preparation: Take 50-200 parts of binder, 0-10 parts of curing agent hexamethylenetetramine, 0-200 parts of solvent and stir evenly, and mix them with 100 parts of expanded vitrified microbeads;

②Preforming treatment: Put the material treated in ① into a flat mold and compact it to smooth it out. The compression ratio is 1:1:1~1:1.3. Put the flat mold and the material in the heating device for heating and forming The heating temperature is 150°C-300°C, and the heating time is 3-30 minutes;

③ Sintering molding: demoulding the preformed sheet, placing the sheet in the heating device, and then injecting nitrogen gas into the heating device at a rate of 10-100ml/min, sintering and molding, the sintering temperature is 200 ° C ~ 900 ° C, The sintering time is 20 minutes to 5 hours.

The phenolic resin is a phenolic resin for refractory materials.

The molecular weight of the polyacrylonitrile is 50,000-90,000.

The heating device is one of microwave oven, oven or muffle furnace.

The solvent is one of water, ethanol or N,N-dimethylformamide.

Due to the adoption of the above technical solutions,

The expanded vitrified microbead fireproof insulation board of the present invention has the following advantages:

1 The fireproof and heat preservation board of the present invention uses the inorganic heat preservation material expanded vitrified microspheres as the main raw material. At the same time, the sintering process of the fireproof heat preservation board is carried out in a nitrogen atmosphere injected into the heating device, and the fireproof heat preservation board after sintering is organically formed The fireproof insulation board after forming has good fireproof performance, and the low organic matter content in the fireproof insulation board after sintering also overcomes the problem of easy aging of organic polymer materials;

2. The expanded vitrified microbeads used in the fireproof heat preservation board of the present invention have the characteristics of light weight, vitrified closed surface, and small thermal conductivity, so that the fireproof heat preservation board has a better heat preservation effect; its hollow structure gives fire protection The thermal insulation board has a certain sound insulation effect; the water absorption rate of the expanded vitrified microbeads is small, and they are tightly bonded after sintering, which makes the fireproof insulation board high in strength and has very low water absorption performance.

3 After testing, the bulk density of the fireproof insulation board is in the range of 100-250kg/ ^m3 , and the thermal conductivity is lower than 0.049W/m·K. The fireproof insulation board does not burn when exposed to an open flame, is smokeless, can withstand high temperature ablation of about 1000°C without deformation, and has a fireproof performance of Class A.

The preparation process of the invention is simple, each component material is a commercially available product, and the raw materials of the product are abundant, and the emulsified asphalt used is suitable for all varieties. The fireproof insulation board produced by this process has a long service life, which can last the same life as the building, and has good compatibility with the wall material, and its strength, safety and stability are also very reliable.

Detailed ways

The present invention will be further described in detail below in conjunction with specific embodiments.

Expanded vitrified microbead fireproof insulation board uses expanded vitrified microbeads as lightweight aggregate, phenolic resin or emulsified asphalt or polyacrylonitrile as binder, and the fireproof insulation board is in the shape of a single-layer plate, and expanded vitrified microbeads are fireproof and thermally The material components of the board are as follows in parts by mass:

100 parts of expanded vitrified microbeads;

Binder 50-200 parts;

0-10 parts of curing agent hexamethylenetetramine;

Among them, when phenolic resin is used as the binder, when it is thermoplastic phenolic resin, the curing agent hexamethylenetetramine can be used as the curing agent to assist its curing preform, and the amount of hexamethylenetetramine is phenolic resin 5% of the mass, when the thermosetting phenolic resin is used, the preform can be directly cured, and the amount of hexamethylenetetramine is 0; when emulsified asphalt or polyacrylonitrile is used as the binder, direct heating Preforming and heating and sintering are sufficient.

The preparation method of expanded vitrified microbead fireproof insulation board,

①Material preparation: Take 50-200 parts of binder, 0-10 parts of curing agent hexamethylenetetramine, 0-200 parts of solvent and stir evenly, and mix them with 100 parts of expanded vitrified microbeads;

②Preforming treatment: Put the material treated in ① into a flat mold and compact it to smooth it out. The compression ratio is 1:1:1~1:1.3. Put the flat mold and the material in the heating device for heating and forming The heating temperature is 150°C-300°C, and the heating time is 3-30 minutes;

③ Sintering molding: demoulding the preformed sheet, placing the sheet in the heating device, and then injecting nitrogen gas into the heating device at a rate of 10-100ml/min, sintering and molding, the sintering temperature is 200 ° C ~ 900 ° C, The sintering time is 20 minutes to 5 hours.

When the binding agent that adopts is phenolic resin, its preparation process is as follows:,

Take 50-200 parts of phenolic resin, 0-10 parts of curing agent hexamethylenetetramine, 0-200 parts of water or ethanol as solvent, stir and dissolve, control the solid content of phenolic resin at 30-50%, take the expansion 100 parts of vitrified microbeads, mix it with the above resin solution evenly, inject it into the mold according to the compression ratio of 1:1:1~1:1.3 and compact and smooth; then put the flat mold and the material in the oven at the same time Or heat the preform in a muffle furnace or a microwave oven. The heating temperature is 150°C to 200°C and the heating time is 3 to 30 minutes. Nitrogen gas is introduced at a speed of ~100ml/min, and then sintered into shape. The sintering temperature is 200°C-900°C, and the sintering time is 20 minutes-5 hours. The expanded vitrified bead fireproof insulation board is obtained.

When the binder used is emulsified asphalt, its preparation process includes the following three steps:

Take 50-200 parts of emulsified asphalt, and then take 100 parts of expanded vitrified microbeads, mix it with the above-mentioned emulsified asphalt, inject it into the mold according to the compression ratio of 1:1:1-1:1.3, and compact and smooth ;Then place the flat mold and the material in an oven or a muffle furnace or a microwave oven to heat the preform at a temperature of 180°C to 300°C and a heating time of 3 to 30 minutes, then remove the plate and place it in an oven or a microwave In a Furnace or a microwave oven, nitrogen gas is introduced into it at a rate of 10-100ml/min, and then sintered into shape. The sintering temperature is 300°C-900°C, and the sintering time is 20 minutes-5 hours, and the expanded vitrified beads are obtained. Fireproof insulation board.

When the binding agent that adopts is polyacrylonitrile, its preparation process comprises following three steps:

Take 50-200 parts of polyacrylonitrile, 50-200 parts of N,N-dimethylformamide, stir and dissolve, control the solid content of polyacrylonitrile solution to 30-50%, and then take 100 parts of expanded vitrified microbeads , mix it with the above-mentioned polyacrylonitrile solution evenly, inject it into the mold according to the compression ratio of 1:1:1～1:1.3 and compact and smooth it; then put the flat mold and the material at the same time in the oven or muffle furnace Or heat the preform in a microwave oven, the heating temperature is 180 ° C ~ 280 ° C, and the heating time is 3 ~ 30 minutes. Nitrogen gas is passed in at a high speed, and then sintered into shape. The sintering temperature is 300°C to 900°C, and the sintering time is 20 minutes to 5 hours.

When the binder used is phenolic resin and water-based phenolic resin, since its solid content is within 30% to 50%, it can be used directly without dilution; when the binder used is oily phenolic resin, the solvent used If it is ethanol, a mixed solution of ethanol and water can also be used as the solvent at this time, and the volume ratio of ethanol and water can reach a ratio of 1:1 at most.

In the process of preforming, conventional oven or muffle furnace heating method and microwave heating method are adopted, and the sintering time in the sintering process is related to the thickness of the expanded vitrified bead fireproof insulation board. For the same binder, the thicker the expanded vitrified bead fireproof insulation board is, the longer the sintering time can be appropriately extended, but all fall within the sintering time range of the present invention. In the sintering method, the conventional oven or muffle furnace heating sintering method, microwave oven microwave sintering method, microwave microwave sintering and oven or muffle furnace conventional heating method are used. Generally speaking, microwave preforming and sintering Faster and more efficient.

The following is a further description of the preparation method of the above-mentioned expanded vitrified bead fireproof insulation board in conjunction with the examples:

Example 1

Take 50 parts of phenolic resin (PFn-5420), 2.5 parts of hexamethylenetetramine, add 110 parts of ethanol to dilute, take 100 parts of expanded vitrified microbeads, mix it with the above resin solution, and compress according to 1:1.1 After injecting into the mold of the required specifications, compact and smooth it, put it in an oven at 150°C for 30 minutes for pre-forming treatment, after demoulding, put the formed plate in the oven, raise the temperature to 200°C and put that at the same time Nitrogen gas is passed into the oven at a rate of 10 ml/min, and sintered for 2 hours under the condition of nitrogen atmosphere to obtain the expanded vitrified bead fireproof insulation board of the present invention. Its bulk density is 108kg/m ³ , thermal conductivity is 0.045m·K, and its fire resistance is Class A.

Example 2

Take 60 parts of phenolic resin (PFn-5420), 3.0 parts of hexamethylenetetramine, add 100 parts of ethanol to dilute, take 100 parts of expanded vitrified microbeads, mix it with the above resin solution, and compress according to the ratio of 1:1.2 After injecting into the mold of the required specifications, compact and smooth, put it in an oven at 180°C for 30 minutes for pre-forming treatment, after demoulding, place the formed plate in a muffle furnace, raise the temperature to 450°C and At the same time, feed nitrogen gas into the muffle furnace at a rate of 20 ml/min, and sinter for 2 hours under the condition of nitrogen atmosphere to obtain the expanded vitrified microbead fireproof insulation board of the present invention. Its bulk density is 128kg/m ³ , thermal conductivity is 0.043m·K, and its fire performance is Class A.

Example 3

Get 80 parts of phenolic resin (PFn-5420), 4.0 parts of hexamethylenetetramine, add 100 parts of water and 80 parts of ethanol to dilute, take 100 parts of expanded vitrified microbeads, mix it with the above resin solution, and mix according to 1 : The compression ratio of 1.3 is injected into the mold of the required specifications for compaction and smoothing, and then put it in an oven at 200°C for 30 minutes for pre-forming treatment. to 900°C and at the same time feed nitrogen gas into the muffle furnace at a rate of 100ml/min, and sinter for 2 hours under nitrogen atmosphere conditions to obtain the expanded vitrified bead fireproof insulation board of the present invention. Its bulk density is 189kg/m ³ , thermal conductivity is 0.043m·K, and its fireproof performance is Class A.

Example 4

Take 100 parts of phenolic resin (PFn-5420), 5.0 parts of hexamethylenetetramine, add 100 parts of ethanol to dilute, take 100 parts of expanded vitrified microbeads, mix it with the above resin solution, and compress according to 1:1.1 Pour it into the mold of the required specifications and compact it flat, put it in the microwave oven for 3 minutes for pre-forming treatment, then pass nitrogen gas into the microwave oven at a speed of 20ml/min, and then demould the formed plate and continue to place it. Sintering in a microwave oven under a nitrogen atmosphere for 30 minutes, the expanded vitrified bead fireproof insulation board of the present invention is obtained. Its bulk density is 134kg/m ³ , thermal conductivity is 0.044W/m·K, and its fire performance is Class A.

Example 5

Take 120 parts of phenolic resin (PFn-5420), 6.0 parts of hexamethylenetetramine, add 120 parts of ethanol to dilute, take 100 parts of expanded vitrified microbeads, mix it with the above resin solution, and compress according to the ratio of 1:1.2 Then pour it into the mold of the required specifications and compact it, put it in the microwave oven for 3 minutes for pre-forming treatment, then demould the formed plate and place it in the microwave oven, and then pass it into the microwave oven at a speed of 20ml/min. Inject nitrogen, and sinter for 20 minutes under the condition of a nitrogen atmosphere at an ambient temperature of 300° C. to obtain the expanded vitrified microbead fireproof insulation board of the present invention. Its bulk density is 187kg/m ³ , thermal conductivity is 0.046W/m·K, and its fire resistance is Class A.

Example 6

Take 150 parts of phenolic resin (PFn-5420), 7.5 parts of hexamethylenetetramine, add 120 parts of ethanol to dilute, take 100 parts of expanded vitrified microbeads, mix it with the above resin solution, and compress according to the ratio of 1:1.3 Then pour it into the mold of the required specifications and compact it flat, put it in an oven at 180°C for 30 minutes for pre-forming treatment, then demould the formed plate and place it in a microwave oven, and then pour 20ml into the microwave oven Nitrogen gas was passed in at a speed of 1/min, and microwave sintering was carried out for 30 minutes under the condition of nitrogen atmosphere to obtain the fire-proof thermal insulation board with expanded vitrified microbeads of the present invention. Its bulk density is 219kg/m ³ , thermal conductivity is 0.042W/m·K, and its fire resistance is Class A.

Example 7

Take 180 parts of phenolic resin (PFn-5420), 9.0 parts of hexamethylenetetramine, add 180 parts of ethanol to dilute, take 100 parts of expanded vitrified microbeads, mix it with the above resin solution, and compress according to the ratio of 1:1.2 After injecting into the mold of the required specification and compacting and smoothing, put it into the microwave oven for 3 minutes for pre-forming treatment. Nitrogen gas is passed in at a rate of 100ml/min, and sintered for 2 hours under the condition of nitrogen gas atmosphere to obtain the expanded vitrified bead fireproof insulation board of the present invention. Its bulk density is 183kg/m ³ , thermal conductivity is 0.043m·K, and its fire performance is Class A.

Example 8

Take 200 parts of phenolic resin (PFn-5420), 10.0 parts of hexamethylenetetramine, add 200 parts of ethanol to dilute, take 100 parts of expanded vitrified microbeads, mix it with the above resin solution, and compress according to the ratio of 1:1.2 Pour it into the mold of the required specifications and compact it flat, put it in an oven at 180°C for 30 minutes for pre-forming treatment, after demolding, put the formed plate in a microwave oven, and then pour 20ml into the microwave oven Nitrogen gas was passed in at a speed of 300° C. for 20 minutes under nitrogen atmosphere at an ambient temperature of 300° C. to obtain the expanded vitrified bead fireproof insulation board of the present invention. Its bulk density is 209kg/m ³ , thermal conductivity is 0.045m·K, and its fireproof performance is Class A.

Example 9

Take 50 parts of phenolic resin (PFn-5309), add 110 parts of ethanol to dilute, take 100 parts of expanded vitrified microbeads, mix it with the above resin solution, and inject it into the mold of the required specification according to the compression ratio of 1:1.1. After smoothing, put it in an oven at 150°C for 30 minutes for pre-forming treatment. After demoulding, put the formed plate in the oven, raise the temperature to 200°C and put it into the oven at the same time at a speed of 10ml/min Nitrogen gas is introduced and sintered for 2 hours under the condition of nitrogen gas atmosphere to obtain the fire-proof insulation board of expanded vitrified microbeads of the present invention. Its bulk density is 112kg/m ³ , thermal conductivity is 0.047m·K, and its fire resistance is Class A.

Example 10

Take 60 parts of phenolic resin (PFn-5309), add 100 parts of ethanol to dilute, take 100 parts of expanded vitrified microbeads, mix it with the above resin solution, and inject it into the mold of the required specification according to the compression ratio of 1:1.2. After smoothing, put it into an oven at 180°C for 30 minutes for pre-forming treatment. After demoulding, place the formed plate in a muffle furnace, raise the temperature to 450°C and inject 20ml/ Nitrogen gas was passed through at a speed of 1 min, and sintered for 2 hours under the condition of nitrogen atmosphere to obtain the expanded vitrified microbead fireproof insulation board of the present invention. Its bulk density is 132kg/m ³ , thermal conductivity is 0.043m·K, and its fireproof performance is Class A.

Example 11

Take 80 parts of phenolic resin (PFn-5309), add 100 parts of water and 80 parts of ethanol to dilute, take 100 parts of expanded vitrified microbeads, mix it with the above resin solution, and inject the required specifications according to the compression ratio of 1:1.3 Compacted and smoothed in the mold, put it in an oven at 200°C for 30 minutes for pre-forming treatment, after demoulding, place the formed plate in the muffle furnace, raise the temperature to 900°C and send it to the muffle furnace at the same time Nitrogen gas was passed into the medium at a speed of 100ml/min, and sintered for 2 hours under the condition of nitrogen atmosphere, that is, the expanded vitrified microbead fireproof insulation board of the present invention was obtained. Its bulk density is 179kg/m ³ , thermal conductivity is 0.045m·K, and its fireproof performance is Class A.

Example 12

Take 100 parts of phenolic resin (PFn-5309), add 100 parts of ethanol to dilute, take 100 parts of expanded vitrified microbeads, mix it with the above resin solution, and inject it into the mold of the required specification according to the compression ratio of 1:1.1. Put it into the microwave oven for 3 minutes for pre-forming treatment, then pass nitrogen gas into the microwave oven at a rate of 20ml/min, then demould the formed plate and continue to sinter in the microwave oven under nitrogen atmosphere In 30 minutes, the expanded vitrified microbead fireproof insulation board of the present invention is produced. Its bulk density is 146kg/m ³ , thermal conductivity is 0.044W/m·K, and its fire performance is Class A.

Example 13

Take 120 parts of phenolic resin (PFn-5309), add 120 parts of ethanol to dilute, take 100 parts of expanded vitrified microbeads, mix it with the above resin solution, and inject it into the mold of the required specification according to the compression ratio of 1:1.2 And compacted and smoothed, put it into the microwave oven for 3 minutes for pre-forming treatment, then demold the formed plate and place it in the microwave oven, and then feed nitrogen into the microwave oven at a rate of 20ml/min. Sintering for 20 minutes under the condition of nitrogen atmosphere at 300°C, the fire-proof insulation board with expanded vitrified microbeads of the present invention is obtained. Its bulk density is 177kg/m ³ , thermal conductivity is 0.043W/m·K, and its fire performance is Class A.

Example 14

Take 150 parts of phenolic resin (PFn-5309), add 120 parts of ethanol to dilute, take 100 parts of expanded vitrified microbeads, mix it with the above resin solution, and inject it into the mold of the required specification according to the compression ratio of 1:1.3. Then put it into an oven with a temperature of 180°C for 30 minutes for pre-forming treatment, then demould the formed plate and place it in a microwave oven, and then inject nitrogen gas into the microwave oven at a rate of 20ml/min. Under the condition of nitrogen atmosphere, microwave sintering for 30 minutes, the expanded vitrified microbead fireproof insulation board of the present invention is obtained. Its bulk density is 208kg/m ³ , thermal conductivity is 0.044W/m·K, and its fire resistance is Class A.

Example 15

Take 180 parts of phenolic resin (PFn-5309), add 180 parts of ethanol to dilute, take 100 parts of expanded vitrified microbeads, mix it with the above resin solution, and inject it into the mold of the required specification according to the compression ratio of 1:1.2. Put it into the microwave oven for 3 minutes for pre-forming treatment. After demoulding, place the formed plate in a muffle furnace at 900°C, and then inject nitrogen into the muffle furnace at a rate of 100ml/min. , and sintered for 2 hours under the condition of nitrogen atmosphere, the expanded vitrified bead fireproof insulation board of the present invention is obtained. Its bulk density is 182kg/m ³ , thermal conductivity is 0.047m·K, and its fire resistance is Class A.

Example 16

Take 200 parts of phenolic resin (PFn-5309), add 200 parts of ethanol to dilute, take 100 parts of expanded vitrified microbeads, mix it with the above resin solution, and inject it into the mold of the required specification according to the compression ratio of 1:1.2. After solid smoothing, put it into an oven with a temperature of 180°C for 30 minutes for pre-forming treatment. Sintering for 20 minutes in a nitrogen atmosphere at an ambient temperature of 300° C. can produce the expanded vitrified bead fireproof insulation board of the present invention. Its bulk density is 197kg/m ³ , thermal conductivity is 0.043m·K, and its fireproof performance is Class A.

Example 17

Take 50 parts of phenolic resin (water-soluble phenolic resin model: 5101, provided by Wuhan Lifa Chemical Co., Ltd.), take 100 parts of expanded vitrified microbeads, mix it with the above resin solution, and inject it according to the compression ratio of 1:1.1 Compact and smooth the mold with the required specifications, put it in an oven at 150°C for 30 minutes for pre-forming treatment, after demoulding, place the formed plate in the oven, raise the temperature to 200°C, and put it into the oven at the same time Nitrogen gas was passed into the medium at a speed of 10ml/min, and sintered for 2 hours under the condition of nitrogen atmosphere to obtain the expanded vitrified microbead fireproof insulation board of the present invention. Its bulk density is 108kg/m ³ , thermal conductivity is 0.047m·K, and its fire performance is Class A.

Example 18

Take 50 parts of phenolic resin (water-soluble phenolic resin model: 5101, provided by Wuhan Lifa Chemical Co., Ltd.), take 100 parts of expanded vitrified microbeads, mix it with the above resin solution, and inject it according to the compression ratio of 1:1.2 Compact and smooth the mold with the required specifications, put it in an oven at 180°C for 30 minutes for pre-forming treatment, after demoulding, place the formed plate in a muffle furnace, raise the temperature to 450°C and simultaneously Nitrogen gas is passed into the muffle furnace at a rate of 20 ml/min, and sintered for 2 hours under the condition of nitrogen atmosphere to obtain the expanded vitrified microbead fireproof insulation board of the present invention. Its bulk density is 108kg/m ³ , thermal conductivity is 0.047m·K, and its fire performance is Class A.

Example 19

Take 50 parts of phenolic resin (water-soluble phenolic resin model: 5101, provided by Wuhan Lifa Chemical Co., Ltd.), take 100 parts of expanded vitrified microbeads, mix it with the above resin solution, and inject it according to the compression ratio of 1:1.3 Compact and smooth the mold with the required specifications, put it in an oven at 200°C for 30 minutes for pre-forming treatment, after demoulding, place the formed plate in a muffle furnace, raise the temperature to 900°C and simultaneously Nitrogen gas is passed into the muffle furnace at a rate of 100ml/min, and sintered for 2 hours under the condition of nitrogen atmosphere, so as to obtain the expanded vitrified microbead fireproof insulation board of the present invention. Its bulk density is 121kg/m ³ , thermal conductivity is 0.048m·K, and its fireproof performance is Class A.

Example 20

Take 50 parts of phenolic resin (water-soluble phenolic resin model: 5101, provided by Wuhan Lifa Chemical Co., Ltd.), take 100 parts of expanded vitrified microbeads, mix it with the above resin solution, and inject it according to the compression ratio of 1:1.1 Compact and smooth the mold with the required specifications, put it in the microwave oven for 3 minutes for pre-forming treatment, then pass nitrogen gas into the microwave oven at a speed of 20ml/min, and then demould the formed plate and continue to place it in nitrogen gas Sintering in a microwave oven under ambient conditions for 30 minutes can produce the expanded vitrified microbead fireproof insulation board of the present invention. Its bulk density is 186kg/m ³ , thermal conductivity is 0.043W/m·K, and its fire resistance is Class A.

Example 21

Take 50 parts of phenolic resin (water-soluble phenolic resin model: 5101, provided by Wuhan Lifa Chemical Co., Ltd.), take 100 parts of expanded vitrified microbeads, mix it with the above resin solution, and inject it according to the compression ratio of 1:1.2 Compact and smooth the mold with the required specifications, put it in the microwave oven for 3 minutes for pre-forming treatment, then demould the formed plate and place it in the microwave oven, and then inject nitrogen gas into the microwave oven at a speed of 20ml/min , and sintered for 20 minutes under the condition of a nitrogen atmosphere at an ambient temperature of 300° C., to obtain the expanded vitrified bead fireproof insulation board of the present invention. Its bulk density is 141kg/m ³ , thermal conductivity is 0.042W/m·K, and its fire performance is Class A.

Example 22

Take 50 parts of phenolic resin (water-soluble phenolic resin model: 5101, provided by Wuhan Lifa Chemical Co., Ltd.), take 100 parts of expanded vitrified microbeads, mix it with the above resin solution, and inject it according to the compression ratio of 1:1.3 Compact and smooth the mold with the required specifications, put it in an oven at 180°C for 30 minutes for pre-forming treatment, then demould the formed plate and place it in the microwave oven, and then pour it into the microwave oven at 20ml/min Nitrogen gas is passed through at a speed of 100°C, and microwave sintering is carried out for 30 minutes under the condition of nitrogen gas atmosphere to obtain the expanded vitrified microbead fireproof insulation board of the present invention. Its bulk density is 221kg/m ³ , thermal conductivity is 0.043W/m·K, and its fire resistance is Class A.

Example 23

Take 50 parts of phenolic resin (water-soluble phenolic resin model: 5101, provided by Wuhan Lifa Chemical Co., Ltd.), take 100 parts of expanded vitrified microbeads, mix it with the above resin solution, and inject it according to the compression ratio of 1:1.2 Compact and smooth the mold with the required specifications, put it in a microwave oven for 3 minutes for pre-forming treatment, after demoulding, place the formed plate in a muffle furnace at 900°C, and then pour 100ml into the muffle furnace Nitrogen gas was passed in at a speed of 1/min, and sintered for 2 hours under the condition of nitrogen atmosphere to obtain the expanded vitrified bead fireproof insulation board of the present invention. Its bulk density is 179kg/m ³ , thermal conductivity is 0.045m·K, and its fireproof performance is Class A.

Example 24

Take 50 parts of phenolic resin (water-soluble phenolic resin model: 5101, provided by Wuhan Lifa Chemical Co., Ltd.), take 100 parts of expanded vitrified microbeads, mix it with the above resin solution, and inject it according to the compression ratio of 1:1.2 Compact and smooth the mold with the required specifications, put it in an oven at 180°C for 30 minutes for pre-forming treatment, after demoulding, place the formed plate in a microwave oven, and then pour it into the microwave oven at a rate of 20ml/min Nitrogen gas is passed in at a speed of 300° C., and sintered for 20 minutes under the condition of a nitrogen atmosphere at an ambient temperature of 300° C., to obtain the expanded vitrified bead fireproof insulation board of the present invention. Its bulk density is 191kg/m ³ , thermal conductivity is 0.045m·K, and its fire resistance is Class A.

Example 25

Take 50 parts of emulsified asphalt (modified emulsified asphalt PCR), take 100 parts of expanded vitrified microbeads, mix them with the above-mentioned emulsified asphalt, and inject them into the mold of the required specification according to the compression ratio of 1:1.1 for compaction and smoothing. Put it in an oven with a temperature of 180°C for 30 minutes for pre-forming treatment. After demoulding, place the formed plate in the oven, raise the temperature to 300°C and at the same time pass nitrogen into the oven at a rate of 10ml/min. Sintering under the condition of nitrogen atmosphere for 5 hours, the expanded vitrified microbead fireproof insulation board of the present invention is obtained. Its bulk density is 98kg/m ³ , thermal conductivity is 0.047m·K, and its fireproof performance is Class A.

Example 26

Take 60 parts of emulsified asphalt (modified emulsified asphalt PCR), take 100 parts of expanded vitrified microbeads, mix them with the above-mentioned emulsified asphalt, and inject them into the mold of the required specification according to the compression ratio of 1:1.2 for compaction and smoothing. Put it into an oven with a temperature of 220°C for 30 minutes for pre-forming treatment. After demoulding, place the formed plate in a muffle furnace, raise the temperature to 450°C and simultaneously pass it into the muffle furnace at a speed of 20ml/min. Enter nitrogen, and sinter under the condition of nitrogen atmosphere for 2 hours, promptly make the expanded vitrified microbead fireproof insulation board of the present invention. Its bulk density is 103kg/m ³ , thermal conductivity is 0.047m·K, and its fireproof performance is Class A.

Example 27

Take 80 parts of emulsified asphalt (modified emulsified asphalt PCR), take 100 parts of expanded vitrified microbeads, mix them evenly with the above emulsified asphalt, inject them into the mold with the required specifications according to the compression ratio of 1:1.3, compact and smooth, Put it into an oven with a temperature of 300°C for 30 minutes for pre-forming treatment. After demoulding, place the formed plate in a muffle furnace, raise the temperature to 900°C and pass it into the muffle furnace at a speed of 100ml/min at the same time. Enter nitrogen, and sinter under the condition of nitrogen atmosphere for 2 hours, promptly make the expanded vitrified microbead fireproof insulation board of the present invention. Its bulk density is 175kg/m ³ , thermal conductivity is 0.049m·K, and its fire resistance is Class A.

Example 28

Take 100 parts of emulsified asphalt (modified emulsified asphalt PCR), take 100 parts of expanded vitrified microbeads, mix them with the above-mentioned emulsified asphalt, and inject them into the mold of the required specification according to the compression ratio of 1:1.1 for compaction and smoothing. Put it into the microwave oven for 3 minutes for pre-forming treatment, then pass nitrogen gas into the microwave oven at a rate of 20ml/min, then demould the formed plate and continue to sinter in the microwave oven under nitrogen atmosphere for 30 minutes, that is The expanded vitrified microbead fireproof insulation board of the present invention is obtained. Its bulk density is 116kg/m ³ , thermal conductivity is 0.046W/m·K, and its fire resistance is Class A.

Example 29

Take 120 parts of emulsified asphalt (modified emulsified asphalt PCR), take 100 parts of expanded vitrified microbeads, mix them with the above-mentioned emulsified asphalt, and inject them into the mold of the required specification according to the compression ratio of 1:1.2 for compaction and smoothing. Put it into the microwave oven for 3 minutes for pre-forming treatment, then demould the formed plate and place it in the microwave oven, and then pass nitrogen gas into the microwave oven at a rate of 20ml/min. Sintering under certain conditions for 20 minutes, the expanded vitrified microbead fireproof insulation board of the present invention is obtained. Its bulk density is 154kg/m ³ , thermal conductivity is 0.049W/m·K, and its fire performance is Class A.

Example 30

Take 150 parts of emulsified asphalt (modified emulsified asphalt PCR), take 100 parts of expanded vitrified microbeads, mix them with the above-mentioned emulsified asphalt, inject them into the mold of the required specification according to the compression ratio of 1:1.3, compact and smooth, Put it in an oven with a temperature of 250°C for 30 minutes for pre-forming treatment, then remove the molded plate and place it in a microwave oven, and then pass nitrogen gas into the microwave oven at a rate of 20ml/min. Under the condition of microwave sintering for 30 minutes, the expanded vitrified microbead fireproof insulation board of the present invention is obtained. Its bulk density is 201kg/m ³ , thermal conductivity is 0.047W/m·K, and its fire performance is Class A.

Example 31

Take 180 parts of emulsified asphalt (modified emulsified asphalt PCR), take 100 parts of expanded vitrified microbeads, mix them with the above-mentioned emulsified asphalt, and inject them into the mold of the required specification according to the compression ratio of 1:1.2 for compaction and smoothing. Put it in a microwave oven for 3 minutes for pre-forming treatment. After demoulding, place the formed plate in a muffle furnace at 900°C, and then feed nitrogen into the muffle furnace at a rate of 100ml/min. Sintering under the condition of 2 hours, promptly made the expansion vitrified bead fire insulation board of the present invention. Its bulk density is 174kg/m ³ , thermal conductivity is 0.048m·K, and its fireproof performance is Class A.

Example 32

Take 200 parts of emulsified asphalt (modified emulsified asphalt PCR), take 100 parts of expanded vitrified microbeads, mix them with the above-mentioned emulsified asphalt, and inject them into the mold of the required specification according to the compression ratio of 1:1.2 for compaction and smoothing. Put it in an oven with a temperature of 220°C for 30 minutes for pre-forming treatment. After demoulding, place the formed plate in a microwave oven, and then pass nitrogen gas into the microwave oven at a rate of 20ml/min. The ambient temperature is 600 ℃ under the condition of nitrogen atmosphere and sintered for 20 minutes to obtain the expanded vitrified microbead fireproof insulation board of the present invention. Its bulk density is 197kg/m ³ , thermal conductivity is 0.047m·K, and its fireproof performance is Class A.

Example 33

Take 50 parts of emulsified asphalt (cationic emulsified asphalt PC-1), take 100 parts of expanded vitrified microbeads, mix them with the above-mentioned emulsified asphalt, and inject them into the mold of the required specification according to the compression ratio of 1:1.1 for compaction and smoothing , put it in an oven with a temperature of 180°C for 30 minutes for pre-forming treatment, after demoulding, place the formed plate in the oven, raise the temperature to 300°C and simultaneously feed nitrogen into the oven at a rate of 10ml/min, Sintering for 2 hours under the condition of nitrogen atmosphere, the expanded vitrified microbead fireproof insulation board of the present invention is obtained. Its bulk density is 101kg/m ³ , thermal conductivity is 0.047m·K, and its fire performance is Class A.

Example 34

Take 60 parts of emulsified asphalt (cationic emulsified asphalt PC-1), take 100 parts of expanded vitrified microbeads, mix them with the above-mentioned emulsified asphalt, and inject them into the mold of the required specification according to the compression ratio of 1:1.2, compact and smooth , put it in an oven with a temperature of 220°C for 30 minutes for pre-forming treatment, after demoulding, place the formed plate in a muffle furnace, raise the temperature to 450°C and simultaneously inject it into the muffle furnace at a speed of 20ml/min Nitrogen gas is introduced and sintered for 2 hours under the condition of nitrogen gas atmosphere to obtain the fire-proof insulation board of expanded vitrified microbeads of the present invention. Its bulk density is 112kg/m ³ , thermal conductivity is 0.046m·K, and its fire resistance is Class A.

Example 35

Take 80 parts of emulsified asphalt (cationic emulsified asphalt PC-1), take 100 parts of expanded vitrified microbeads, mix them with the above-mentioned emulsified asphalt, and inject them into the mold of the required specification according to the compression ratio of 1:1.3 for compaction and smoothing , put it in an oven with a temperature of 300°C for 30 minutes for pre-forming treatment, after demoulding, place the formed plate in a muffle furnace, raise the temperature to 900°C and simultaneously inject it into the muffle furnace at a speed of 100ml/min Nitrogen gas is introduced and sintered for 2 hours under the condition of nitrogen gas atmosphere to obtain the fire-proof insulation board of expanded vitrified microbeads of the present invention. Its bulk density is 166kg/m ³ , thermal conductivity is 0.047m·K, and its fireproof performance is Class A.

Example 36

Take 100 parts of emulsified asphalt (cationic emulsified asphalt PC-1), take 100 parts of expanded vitrified microbeads, mix them with the above-mentioned emulsified asphalt, and inject them into the mold of the required specification according to the compression ratio of 1:1.1, compact and smooth , put it in a microwave oven for 3 minutes for pre-forming treatment, then pass nitrogen gas into the microwave oven at a rate of 20ml/min, then demould the formed plate and continue to sinter in a microwave oven under nitrogen atmosphere for 30 minutes, Promptly make the expanded vitrified microbead fire insulation board of the present invention. Its bulk density is 110kg/m ³ , thermal conductivity is 0.049W/m·K, and its fire performance is Class A.

Example 37

Take 120 parts of emulsified asphalt (cationic emulsified asphalt PC-1), take 100 parts of expanded vitrified microbeads, mix them with the above-mentioned emulsified asphalt, and inject them into the mold of the required specification according to the compression ratio of 1:1.2 for compaction and smoothing , put it in a microwave oven for 3 minutes for pre-forming treatment, then demould the formed plate and place it in the microwave oven, and then pass nitrogen gas into the microwave oven at a rate of 20ml/min. Sintering under certain conditions for 20 minutes, the expanded vitrified microbead fireproof insulation board of the present invention is obtained. Its bulk density is 175kg/m ³ , thermal conductivity is 0.047W/m·K, and its fire performance is Class A.

Example 38

Take 150 parts of emulsified asphalt (cationic emulsified asphalt PC-1), take 100 parts of expanded vitrified microbeads, mix them with the above-mentioned emulsified asphalt, and inject them into the mold of the required specification according to the compression ratio of 1:1.3 for compaction and smoothing , put it in an oven at a temperature of 250°C for 30 minutes for pre-forming treatment, then demould the formed plate and place it in a microwave oven, and then pass nitrogen gas into the microwave oven at a rate of 20ml/min. Under the condition of microwave sintering for 30 minutes, the expanded vitrified microbead fireproof insulation board of the present invention is obtained. Its bulk density is 213kg/m ³ , thermal conductivity is 0.048W/m·K, and its fire performance is Class A.

Example 39

Take 180 parts of emulsified asphalt (cationic emulsified asphalt PC-1), take 100 parts of expanded vitrified microbeads, mix them with the above-mentioned emulsified asphalt, and inject them into the mold with the required specifications according to the compression ratio of 1:1.2 for compaction and smoothing , put it in a microwave oven for 3 minutes for pre-forming treatment, after demoulding, place the formed plate in a muffle furnace at 900 ° C, and then pass nitrogen gas into the muffle furnace at a rate of 100ml/min. After sintering for 2 hours under the condition of atmosphere, the expanded vitrified microbead fireproof insulation board of the present invention is obtained. Its bulk density is 167kg/m ³ , thermal conductivity is 0.045m·K, and its fireproof performance is Class A.

Example 40

Take 200 parts of emulsified asphalt (cationic emulsified asphalt PC-1), take 100 parts of expanded vitrified microbeads, mix them with the above-mentioned emulsified asphalt, and inject them into the mold of the required specification according to the compression ratio of 1:1.2 for compaction and smoothing , put it in an oven with a temperature of 220°C for 30 minutes for pre-forming treatment. Sintering for 20 minutes under the condition of nitrogen atmosphere at 600°C, the fire-proof insulation board with expanded vitrified microbeads of the present invention is obtained. Its bulk density is 201kg/m ³ , thermal conductivity is 0.049m·K, and its fire performance is Class A.

Example 41

Take 50 parts of emulsified asphalt (anionic emulsified asphalt PA-3), take 100 parts of expanded vitrified microbeads, mix it with the above emulsified asphalt, and inject it into the mold of the required specification according to the compression ratio of 1:1.1, compact and smooth , put it in an oven with a temperature of 180°C for 30 minutes for pre-forming treatment, after demoulding, place the formed plate in the oven, raise the temperature to 200°C, and at the same time pass nitrogen into the oven at a rate of 10ml/min , and sintered for 2 hours under the condition of nitrogen atmosphere, the expanded vitrified bead fireproof insulation board of the present invention is obtained. Its bulk density is 92kg/m ³ , its thermal conductivity is 0049m·K, and its fireproof performance is Class A.

Example 42

Take 60 parts of emulsified asphalt (anionic emulsified asphalt PA-3), take 100 parts of expanded vitrified microbeads, mix them with the above-mentioned emulsified asphalt, and inject them into the mold of the required specification according to the compression ratio of 1:1.2, compact and smooth , put it in an oven with a temperature of 220°C for 30 minutes for pre-forming treatment, after demoulding, place the formed plate in a muffle furnace, raise the temperature to 450°C and simultaneously inject it into the muffle furnace at a speed of 20ml/min Nitrogen gas is introduced and sintered for 2 hours under the condition of nitrogen gas atmosphere to obtain the fire-proof insulation board of expanded vitrified microbeads of the present invention. Its bulk density is 107kg/m ³ , thermal conductivity is 0.049m·K, and its fireproof performance is Class A.

Example 43

Take 80 parts of emulsified asphalt (anionic emulsified asphalt PA-3), take 100 parts of expanded vitrified microbeads, mix them with the above-mentioned emulsified asphalt, and inject them into the mold with the required specifications according to the compression ratio of 1:1.3 for compaction and smoothing , put it in an oven with a temperature of 300°C for 30 minutes for pre-forming treatment, after demoulding, place the formed plate in a muffle furnace, raise the temperature to 900°C and feed it into the muffle furnace at the same time with 100ml/min Nitrogen gas is passed through at a high speed, and sintered for 2 hours under the condition of nitrogen atmosphere to obtain the expanded vitrified microbead fireproof insulation board of the present invention. Its bulk density is 172kg/m ³ , thermal conductivity is 0.047m·K, and its fire performance is Class A.

Example 44

Take 100 parts of emulsified asphalt (anionic emulsified asphalt PA-3), take 100 parts of expanded vitrified microbeads, mix them with the above-mentioned emulsified asphalt, and inject them into the mold of the required specification according to the compression ratio of 1:1.1, compact and smooth , put it in a microwave oven for 3 minutes for pre-forming treatment, then pass nitrogen gas into the microwave oven at a rate of 20ml/min, then demould the formed plate and continue to sinter in a microwave oven under nitrogen atmosphere for 30 minutes, Promptly make the expanded vitrified microbead fire insulation board of the present invention. Its bulk density is 124kg/m ³ , thermal conductivity is 0.047W/m·K, and its fire performance is Class A.

Example 45

Take 120 parts of emulsified asphalt (anionic emulsified asphalt PA-3), take 100 parts of expanded vitrified microbeads, mix them with the above-mentioned emulsified asphalt, and inject them into the mold of the required specification according to the compression ratio of 1:1.2 for compaction and smoothing , put it in a microwave oven for 3 minutes for pre-forming treatment, then demould the formed plate and place it in the microwave oven, and then pass nitrogen gas into the microwave oven at a rate of 20ml/min. Sintering under certain conditions for 20 minutes, the expanded vitrified microbead fireproof insulation board of the present invention is obtained. Its bulk density is 162kg/m ³ , thermal conductivity is 0.049W/m·K, and its fire performance is Class A.

Example 46

Take 150 parts of emulsified asphalt (anionic emulsified asphalt PA-3), take 100 parts of expanded vitrified microbeads, mix them with the above-mentioned emulsified asphalt, and inject them into the mold with the required specifications according to the compression ratio of 1:1.3 for compaction and smoothing , put it in an oven at a temperature of 250°C for 30 minutes for pre-forming treatment, then demould the formed plate and place it in a microwave oven, and then pass nitrogen gas into the microwave oven at a rate of 20ml/min. Under the condition of microwave sintering for 30 minutes, the expanded vitrified microbead fireproof insulation board of the present invention is obtained. Its bulk density is 197kg/m ³ , thermal conductivity is 0.046W/m·K, and its fire resistance is Class A.

Example 47

Take 180 parts of emulsified asphalt (anionic emulsified asphalt PA-3), take 100 parts of expanded vitrified microbeads, mix them with the above-mentioned emulsified asphalt, and inject them into the mold of the required specification according to the compression ratio of 1:1.2 for compaction and smoothing , put it in a microwave oven for 3 minutes for pre-forming treatment, after demoulding, place the formed plate in a muffle furnace at 900 ° C, and then pass nitrogen gas into the muffle furnace at a rate of 100ml/min. After sintering for 2 hours under the condition of atmosphere, the expanded vitrified microbead fireproof insulation board of the present invention is obtained. Its bulk density is 163kg/m ³ , thermal conductivity is 0.047m·K, and its fire performance is Class A.

Example 48

Take 200 parts of emulsified asphalt (anionic emulsified asphalt PA-3), take 100 parts of expanded vitrified microbeads, mix them with the above-mentioned emulsified asphalt, and inject them into the mold with the required specifications according to the compression ratio of 1:1.2 for compaction and smoothing , put it in an oven with a temperature of 220°C for 30 minutes for pre-forming treatment. Sintering for 20 minutes under the condition of nitrogen atmosphere at 600°C, the fire-proof insulation board with expanded vitrified microbeads of the present invention is obtained. Its bulk density is 182kg/m ³ , thermal conductivity is 0.048m·K, and its fireproof performance is Class A.

Example 49

Take 50 parts of polyacrylonitrile (molecular weight: 50,000), add 110 parts of N,N-dimethylformamide for dilution, take 100 parts of expanded vitrified microbeads, mix it with the above solution, and press the compression ratio of 1:1.1 Pour it into the mold of the required specifications and compact it to smooth it out. Put it in an oven at 180°C for 30 minutes for pre-forming treatment. Nitrogen gas flowed at a speed of 10ml/min in the middle, and sintered for 2 hours under the condition of nitrogen atmosphere, and the expanded vitrified microbead fireproof insulation board of the present invention was obtained. Its bulk density is 115kg/m ³ , thermal conductivity is 0.047m·K, and its fire performance is Class A.

Example 50

Take 60 parts of polyacrylonitrile (molecular weight: 50,000), add 140 parts of N,N-dimethylformamide to dilute, take 100 parts of expanded vitrified microbeads, mix it with the above solution, and press the compression ratio of 1:1.2 Pour it into the mold of the required specifications and compact it to smooth it out. Put it in an oven at 220°C for 30 minutes for pre-forming treatment. Nitrogen gas is passed into the muffle furnace at a rate of 20ml/min, and sintered for 2 hours under the condition of nitrogen atmosphere to obtain the expanded vitrified bead fireproof insulation board of the present invention. Its bulk density is 142kg/m ³ , thermal conductivity is 0.046m·K, and its fire performance is Class A.

Example 51

Take 80 parts of polyacrylonitrile (molecular weight: 50,000), add 100 parts of N,N-dimethylformamide to dilute, take 100 parts of expanded vitrified microbeads, mix it with the above solution, and press the compression ratio of 1:1.3 Pour it into the mold of the required specifications and compact it to smooth it out. Put it in an oven at 280°C for 30 minutes for pre-forming treatment. Nitrogen gas is passed into the muffle furnace at a rate of 100ml/min, and sintered for 2 hours under the condition of nitrogen atmosphere to obtain the expanded vitrified bead fireproof insulation board of the present invention. Its bulk density is 207kg/m ³ , thermal conductivity is 0.048m·K, and its fire resistance is Class A.

Example 52

Take 100 parts of polyacrylonitrile (molecular weight: 50,000), add 100 parts of N,N-dimethylformamide for dilution, take 100 parts of expanded vitrified microbeads, mix it with the above resin solution, and compress it according to the ratio of 1:1.1 Pour it into the mold of the required specifications and compact it flat, put it in the microwave oven for 3 minutes for pre-forming treatment, then pass nitrogen gas into the microwave oven at a speed of 20ml/min, and then demould the formed plate and continue to place it. Sintering in a microwave oven under a nitrogen atmosphere for 30 minutes, the expanded vitrified bead fireproof insulation board of the present invention is obtained. Its bulk density is 147kg/m ³ , thermal conductivity is 0.046W/m·K, and its fire performance is Class A.

Example 53

Take 120 parts of polyacrylonitrile (molecular weight: 50,000), add 120 parts of N,N-dimethylformamide for dilution, take 100 parts of expanded vitrified microbeads, mix it with the above solution, and press the compression ratio of 1:1.2 Pour it into the mold of the required specifications, compact it and smooth it out, put it in the microwave oven for 3 minutes for pre-forming treatment, then demould the formed plate and place it in the microwave oven, and then pour it into the microwave oven at a speed of 20ml/min Nitrogen, and sintering for 20 minutes under the condition of a nitrogen atmosphere at an ambient temperature of 300° C., the expanded vitrified bead fireproof insulation board of the present invention is obtained. Its bulk density is 198kg/m ³ , thermal conductivity is 0.049W/m·K, and its fireproof performance is Class A.

Example 54

Take 150 parts of polyacrylonitrile (molecular weight: 50,000), add 150 parts of N,N-dimethylformamide for dilution, take 100 parts of expanded vitrified microbeads, mix it with the above solution, and press the compression ratio of 1:1.3 Pour it into a mold of the required specification and compact it to smooth it out, put it in an oven at 240°C for 30 minutes for pre-forming treatment, then demould the molded plate and place it in a microwave oven, then pour it into the microwave oven with 20ml/ Nitrogen gas was passed through at a speed of 1 min, and microwave sintering was carried out for 30 minutes under the condition of nitrogen gas atmosphere, and the expanded vitrified microbead fireproof insulation board of the present invention was obtained. Its bulk density is 250kg/m ³ , thermal conductivity is 0.045W/m·K, and its fire resistance is Class A.

Example 55

Take 180 parts of polyacrylonitrile (molecular weight: 50,000), add 180 parts of N,N-dimethylformamide for dilution, take 100 parts of expanded vitrified microbeads, mix it with the above solution, and press the compression ratio of 1:1.2 Pour it into the mold of the required specifications and compact it to smooth it out. Put it in a microwave oven for 3 minutes for pre-forming treatment. The speed of 100ml/min is fed with nitrogen, and sintered for 2 hours under the condition of nitrogen atmosphere, that is, the expanded vitrified microbead fireproof insulation board of the present invention is obtained. Its bulk density is 212kg/m ³ , thermal conductivity is 0.047m·K, and its fireproof performance is Class A.

Example 56

Take 200 parts of polyacrylonitrile (molecular weight: 50,000), add 200 parts of N,N-dimethylformamide for dilution, take 100 parts of expanded vitrified microbeads, mix it with the above solution, and press the compression ratio of 1:1.2 Pour it into a mold of the required specification and compact it to smooth it out. Put it in an oven at 220°C for 30 minutes for pre-forming treatment. Nitrogen gas was passed in at a speed of 1 min, and sintered for 20 minutes under the condition of a nitrogen atmosphere at an ambient temperature of 500°C to obtain the fire-proof insulation board with expanded vitrified microbeads of the present invention. Its bulk density is 223kg/m ³ , thermal conductivity is 0.046m·K, and its fireproof performance is Class A.

Example 57

Take 50 parts of polyacrylonitrile (molecular weight: 70,000), add 110 parts of N, N-dimethylformamide to dilute, take 100 parts of expanded vitrified microbeads, mix it with the above solution, and press the compression ratio of 1:1.1 Pour it into the mold of the required specifications and compact it, put it in an oven at 180°C for 30 minutes for pre-forming treatment, after demoulding, put the formed plate in the oven, raise the temperature to 300°C and put it into the oven at the same time Nitrogen gas is passed into the oven at a rate of 10ml/min, and sintered for 2 hours under the condition of nitrogen atmosphere to obtain the fire-proof thermal insulation board with expanded vitrified microbeads of the present invention. Its bulk density is 103kg/m ³ , thermal conductivity is 0.046m·K, and its fire performance is Class A.

Example 58

Take 60 parts of polyacrylonitrile (molecular weight: 70,000), add 140 parts of N,N-dimethylformamide for dilution, take 100 parts of expanded vitrified microbeads, mix it with the above solution, and press the compression ratio of 1:1.2 Pour it into the mold of the required specifications and compact it to smooth it out. Put it in an oven at 220°C for 30 minutes for pre-forming treatment. Nitrogen gas is passed into the muffle furnace at a rate of 20ml/min, and sintered for 2 hours under the condition of nitrogen atmosphere to obtain the expanded vitrified bead fireproof insulation board of the present invention. Its bulk density is 163kg/m ³ , thermal conductivity is 0.047m·K, and its fire performance is Class A.

Example 59

Take 80 parts of polyacrylonitrile (molecular weight: 70,000), add 100 parts of N,N-dimethylformamide for dilution, take 100 parts of expanded vitrified microbeads, mix it with the above solution, and press the compression ratio of 1:1.3 Pour it into the mold of the required specifications and compact it to smooth it out. Put it in an oven at 280°C for 30 minutes for pre-forming treatment. Nitrogen gas is passed into the muffle furnace at a rate of 100ml/min, and sintered for 2 hours under the condition of nitrogen atmosphere to obtain the expanded vitrified bead fireproof insulation board of the present invention. Its bulk density is 102kg/m ³ , thermal conductivity is 0.045m·K, and its fireproof performance is Class A.

Example 60

Take 100 parts of polyacrylonitrile (molecular weight: 70,000), add 100 parts of N,N-dimethylformamide for dilution, take 100 parts of expanded vitrified microbeads, mix it with the above solution, and press the compression ratio of 1:1.1 Pour it into the mold of the required specifications and compact it to smooth it out, put it in the microwave oven for 3 minutes for pre-forming treatment, then pass nitrogen gas into the microwave oven at a speed of 20ml/min, and then demould the formed plate and continue to place it in the Sintering in a microwave oven under a nitrogen atmosphere for 30 minutes, the expanded vitrified microbead fireproof insulation board of the present invention is obtained. Its bulk density is 154kg/m ³ , thermal conductivity is 0.046W/m·K, and its fire resistance is Class A.

Example 61

Take 120 parts of polyacrylonitrile (molecular weight: 70,000), add 120 parts of N,N-dimethylformamide to dilute, take 100 parts of expanded vitrified microbeads, mix it with the above solution, and press the compression ratio of 1:1.2 Pour it into a mold of the required specification, compact it and smooth it out, put it in a microwave oven for 3 minutes for pre-forming treatment, then demould the formed plate and place it in the microwave oven, and then pass it into the microwave oven at a speed of 20ml/min. Inject nitrogen, and sinter for 20 minutes under the condition of a nitrogen atmosphere at an ambient temperature of 300° C. to obtain the expanded vitrified microbead fireproof insulation board of the present invention. Its bulk density is 192kg/m ³ , thermal conductivity is 0.046W/m·K, and its fire performance is Class A.

Example 62

Take 150 parts of polyacrylonitrile (molecular weight: 70,000), add 150 parts of N,N-dimethylformamide for dilution, take 100 parts of expanded vitrified microbeads, mix it with the above solution, and press the compression ratio of 1:1.3 Pour it into a mold of the required specification and compact it to smooth it out, put it in an oven at 240°C for 30 minutes for pre-forming treatment, then demould the molded plate and place it in a microwave oven, then pour it into the microwave oven with 20ml/ Nitrogen gas was passed through at a speed of 1 min, and microwave sintering was carried out for 30 minutes under the condition of nitrogen gas atmosphere, and the expanded vitrified microbead fireproof insulation board of the present invention was obtained. Its bulk density is 233kg/m ³ , thermal conductivity is 0.048W/m·K, and its fire resistance is Class A.

Example 63

Take 180 parts of polyacrylonitrile (molecular weight: 70,000), add 180 parts of N, N-dimethylformamide for dilution, take 100 parts of expanded vitrified microbeads, mix it with the above solution, and press the compression ratio of 1:1.2 Pour it into the mold of the required specification, compact and smooth it, put it in the microwave oven for 3 minutes for pre-forming treatment, after demolding, place the formed plate in a muffle furnace at 900°C, and then pour 100ml into the muffle furnace Nitrogen gas was passed in at a speed of 1/min, and sintered for 2 hours under the condition of nitrogen atmosphere to obtain the expanded vitrified bead fireproof insulation board of the present invention. Its volume density is 202kg/m ³ , its thermal conductivity is 0.045m·K, and its fireproof performance is Class A.

Example 64

Take 200 parts of polyacrylonitrile (molecular weight: 70,000), add 200 parts of N,N-dimethylformamide to dilute, take 100 parts of expanded vitrified microbeads, mix it with the above solution evenly, according to the compression ratio of 1:1.2 Pour it into the mold of the required specifications and compact it to smooth it out. Put it in an oven at 220°C for 30 minutes for pre-forming treatment. Nitrogen gas is introduced at a certain speed, and sintering is carried out for 20 minutes under the condition of a nitrogen atmosphere at an ambient temperature of 500° C. to obtain the fireproof insulation board of the present invention. Its bulk density is 245kg/m ³ , thermal conductivity is 0.047m·K, and its fireproof performance is Class A.

Example 65

Take 50 parts of polyacrylonitrile (molecular weight: 90,000), add 110 parts of N,N-dimethylformamide for dilution, take 100 parts of expanded vitrified microbeads, mix it with the above solution, and press the compression ratio of 1:1.1 Pour it into the mold of the required specifications and compact it, put it in an oven at 180°C for 30 minutes for pre-forming treatment, after demoulding, put the formed plate in the oven, raise the temperature to 300°C and put it into the oven at the same time Nitrogen gas is passed into the oven at a rate of 10ml/min, and sintered for 2 hours under the condition of nitrogen atmosphere to obtain the fire-proof thermal insulation board with expanded vitrified microbeads of the present invention. Its bulk density is 124kg/m ³ , thermal conductivity is 0.048m·K, and its fire performance is Class A.

Example 66

Take 60 parts of polyacrylonitrile (molecular weight: 90,000), add 140 parts of N, N-dimethylformamide to dilute, take 100 parts of expanded vitrified microbeads, mix it with the above solution evenly, according to the compression ratio of 1:1.2 Pour it into the mold of the required specifications and compact it to smooth it out. Put it in an oven at 220°C for 30 minutes for pre-forming treatment. Nitrogen gas is passed into the muffle furnace at a rate of 20ml/min, and sintered for 2 hours under the condition of nitrogen atmosphere to obtain the expanded vitrified bead fireproof insulation board of the present invention. Its bulk density is 151kg/m ³ , thermal conductivity is 0.047m·K, and its fireproof performance is Class A.

Example 67

Take 80 parts of polyacrylonitrile (molecular weight: 90,000), add 100 parts of N,N-dimethylformamide for dilution, take 100 parts of expanded vitrified microbeads, mix it with the above solution, and press the compression ratio of 1:1.3 Pour it into the mold of the required specifications and compact it to smooth it out. Put it in an oven at 280°C for 30 minutes for pre-forming treatment. Nitrogen gas is passed into the muffle furnace at a rate of 100ml/min, and sintered for 2 hours under the condition of nitrogen atmosphere to obtain the expanded vitrified bead fireproof insulation board of the present invention. Its bulk density is 193kg/m ³ , thermal conductivity is 0.044m·K, and its fireproof performance is Class A.

Example 68

Take 100 parts of polyacrylonitrile (molecular weight: 90,000), add 100 parts of N,N-dimethylformamide for dilution, take 100 parts of expanded vitrified microbeads, mix it with the above solution, and press the compression ratio of 1:1.1 Pour it into the mold of the required specifications and compact it to smooth it out, put it in the microwave oven for 3 minutes for pre-forming treatment, then pass nitrogen gas into the microwave oven at a speed of 20ml/min, and then demould the formed plate and continue to place it in the Sintering in a microwave oven under a nitrogen atmosphere for 30 minutes, the expanded vitrified microbead fireproof insulation board of the present invention is obtained. Its bulk density is 138kg/m ³ , thermal conductivity is 0.049W/m·K, and its fire performance is Class A.

Example 69

Take 120 parts of polyacrylonitrile (molecular weight: 90,000), add 120 parts of N,N-dimethylformamide for dilution, take 100 parts of expanded vitrified microbeads, mix it with the above solution, and press the compression ratio of 1:1.2 Pour it into the mold of the required specifications and compact it to smooth it out, put it in the microwave oven for 3 minutes for pre-forming treatment, demould the formed plate and place it in the microwave oven, and then blow nitrogen gas into the microwave oven at a rate of 20ml/min , and sintered for 20 minutes under the condition of a nitrogen atmosphere at an ambient temperature of 300° C., to obtain the expanded vitrified bead fireproof insulation board of the present invention. Its bulk density is 186kg/m ³ , thermal conductivity is 0.046W/m·K, and its fire performance is Class A.

Example 70

Take 150 parts of polyacrylonitrile (molecular weight: 90,000), add 150 parts of N,N-dimethylformamide to dilute, take 100 parts of expanded vitrified microbeads, mix it with the above solution, and press the compression ratio of 1:1.3 Pour it into a mold of the required specification and compact it to smooth it out. Put it in an oven at 240°C for 30 minutes for pre-forming treatment. After the molded plate is demoulded, put it in a microwave oven, and then pour it into the microwave oven at a rate of 20ml/min. Nitrogen gas is passed through at a speed of 100°C, and microwave sintering is carried out for 30 minutes under the condition of nitrogen gas atmosphere to obtain the expanded vitrified microbead fireproof insulation board of the present invention. Its bulk density is 248kg/m ³ , thermal conductivity is 0.047W/m·K, and its fire resistance is Class A.

Example 71

Take 180 parts of polyacrylonitrile (molecular weight: 90,000), add 180 parts of N, N-dimethylformamide for dilution, take 100 parts of expanded vitrified microbeads, mix it with the above solution, and press the compression ratio of 1:1.2 Pour it into the mold of the required specification, compact and smooth it, put it in the microwave oven for 3 minutes for pre-forming treatment, after demolding, place the formed plate in a muffle furnace at 900°C, and then pour 100ml into the muffle furnace Nitrogen gas was passed in at a speed of 1/min, and sintered for 2 hours under the condition of nitrogen atmosphere to obtain the expanded vitrified bead fireproof insulation board of the present invention. Its bulk density is 209kg/m ³ , thermal conductivity is 0.048m·K, and its fireproof performance is Class A.

Example 72

Take 200 parts of polyacrylonitrile (molecular weight: 90,000), add 200 parts of N,N-dimethylformamide for dilution, take 100 parts of expanded vitrified microbeads, mix it with the above solution, and press the compression ratio of 1:1.2 Pour it into a mold of the required specification and compact it to smooth it out. Put it in an oven at 220°C for 30 minutes for pre-forming treatment. Nitrogen gas was passed in at a speed of 1 min, and sintered for 20 minutes under the condition of a nitrogen atmosphere at an ambient temperature of 500°C to obtain the fire-proof insulation board with expanded vitrified microbeads of the present invention. Its bulk density is 231kg/m ³ , thermal conductivity is 0.047m·K, and its fireproof performance is Class A.

Claims (6)

1. An expanded vitrified microbead fireproof insulation board, characterized in that: the fireproof insulation board is made of expanded vitrified microbeads as lightweight aggregate, and phenolic resin or emulsified pitch or polyacrylonitrile is molded and sintered as a binder Made, the fireproof insulation board is in the shape of a single-layer board, and the components of each material of the insulation board are as follows in parts by mass: 100 parts of expanded vitrified microbeads; Binder 50-200 parts; 0-10 parts of curing agent hexamethylenetetramine. 2. A preparation method of expanded vitrified microbead fireproof insulation board, characterized in that: ①Material preparation: Take 50-200 parts of binder, 0-10 parts of curing agent hexamethylenetetramine, 0-200 parts of solvent and stir evenly, and mix them with 100 parts of expanded vitrified microbeads; ②Preforming treatment: Put the material treated in ① into a flat mold and compact it to smooth it out. The compression ratio is 1:1:1~1:1.3. Put the flat mold and the material in the heating device for heating and forming The heating temperature is 150°C-300°C, and the heating time is 3-30 minutes; ③ Sintering molding: demoulding the preformed sheet, placing the sheet in the heating device, and then injecting nitrogen gas into the heating device at a rate of 10-100ml/min, sintering and molding, the sintering temperature is 200 ° C ~ 900 ° C, The sintering time is 20 minutes to 5 hours. 3. A method for preparing an expanded vitrified microbead fireproof insulation board according to claim 1 or 2, characterized in that: the phenolic resin is a phenolic resin for refractory materials. 4 . The method for preparing an expanded vitrified microbead fireproof insulation board according to claim 1 or 2 , characterized in that the molecular weight of the polyacrylonitrile is 50,000-90,000. 5 . The method for preparing an expanded vitrified microbead fireproof insulation board according to claim 2 , wherein the heating device is one of a microwave oven, an oven or a muffle furnace. 6 . 6. The preparation method of a kind of expanded vitrified microbead fireproof insulation board according to claim 2, characterized in that: the solvent is one of water or ethanol or N,N-dimethylformamide .