阅读说明：本技术 一种防火耐磨的工程材料 (Fireproof and wear-resistant engineering material ) 是由 胡伟鹏 于 2020-07-02 设计创作，主要内容包括：本发明涉及工程新材料技术领域,公开了一种防火耐磨的工程材料,包括苯乙烯、聚苯乙烯、软水、分散剂、阻燃剂和发泡剂,实现方法包括以下步骤：S1、将混合料加入到聚合釜内反应；S2、将粒料加入到浸渍釜中反应内；S3、将EPS珠粒依次送入到预发泡桶和熟化仓内反应；S4、注塑成型。本发明通过将苯乙烯、聚苯乙烯、软水、分散剂和阻燃剂加入到聚合釜内反应生成PS颗粒,再将PS颗粒加入到含有发泡剂的浸渍釜中反应生成EPS珠粒,再将EPS珠粒依次加入到预发泡桶、流化床、振动筛和熟化仓内反应生成熟化料,再将熟化料注入到加压罐内,再通过加料枪把熟化料注入到模具内冷却成型,冷却成型的材料具有强度高、密度小、质量轻、耐磨性好,使用时间长。(The invention relates to the technical field of new engineering materials, and discloses a fireproof and wear-resistant engineering material which comprises styrene, polystyrene, soft water, a dispersing agent, a flame retardant and a foaming agent, wherein the implementation method comprises the following steps: s1, adding the mixture into a polymerization kettle for reaction; s2, adding the granules into an impregnation kettle for reaction; s3, sequentially conveying the EPS beads into a pre-foaming barrel and a curing bin for reaction; and S4, injection molding. Styrene, polystyrene, soft water, a dispersing agent and a fire retardant are added into a polymerization kettle to react to generate PS particles, then the PS particles are added into an impregnation kettle containing a foaming agent to react to generate EPS beads, then the EPS beads are sequentially added into a pre-foaming barrel, a fluidized bed, a vibrating screen and a curing bin to react to generate cured materials, then the cured materials are injected into a pressure tank, then the cured materials are injected into a mold through a feeding gun to be cooled and molded, and the cooled and molded materials have the advantages of high strength, small density, light weight, good wear resistance and long service time.)

1. A fireproof and wear-resistant engineering material comprises styrene, Polystyrene (PS), soft water, a dispersing agent, a flame retardant and a foaming agent, and is characterized in that the implementation method comprises the following steps:

s1, mixing styrene, Polystyrene (PS), soft water, a dispersing agent and a flame retardant according to the weight ratio of 92: 8.7: 1.2: 120: 5, dissolving and mixing, adding the mixture into a polymerization kettle, adding an initiator, stirring, heating to 90 +/-2 ℃, keeping the pressure in the polymerization kettle at 0.3MPa, reacting for 6 hours, heating to 115 ℃ and 135 ℃ respectively, polymerizing for 2-3 hours, filtering after PS particles are cured, putting the PS particles into a washing tank for washing, dehydrating, drying, and adding the PS particles into a storage bin for later use;

s2, adding the granules obtained in the step S1 into an impregnation kettle containing a foaming agent, continuously stirring, controlling the temperature in a reverse impregnation kettle to be 80-90 ℃, controlling the pressure to be 0.9MPa, impregnating for 5 hours, cooling to below 40 ℃, washing, dehydrating, drying, adding an external lubricant, forming EPS beads, and storing in a raw material tank;

s3, conveying the EPS beads in the raw material tank into a pre-foaming barrel through a screw conveyor, heating the EPS beads in the pre-foaming barrel through steam to expand, increasing the volume of the EPS beads, enabling the density of the EPS beads to change correspondingly, controlling the density to be between 15 and 20kg/m, softening polystyrene through heat, starting to boil and gasify foaming agent pentane stored in the EPS beads, increasing the pressure in the EPS beads through gasified pentane gas to expand the EPS beads, allowing the pre-foamed EPS beads to pass through a fluidized bed, then screening the EPS beads in a vibrating screen to screen out particles with proper sizes, conveying the pre-foamed EPS beads into a curing bin through a feeder to cure, allowing air to penetrate into the EPS beads, balancing the internal pressure and the external pressure, further stabilizing the EPS beads, and controlling the curing time to be 3 to 6 hours;

s4, feeding the cured EPS beads into a pressure tank, applying pressure of 0.4-0.7 Mpa in the pressure tank, injecting the raw materials into a mold through a feeding gun, cooling and molding, and cutting into the finished products.

2. The fireproof and wear-resistant engineering material as claimed in claim 1, wherein the weight of the initiator is 10% of the weight of the mixed solution in S1, the initiator may be dibenzoyl peroxide, di-tert-butyl peroxide or benzoyl peroxide, and the dispersant may be calcium sulfate.

3. A fire-proof and wear-resistant engineering material as claimed in claim 1, wherein the weight of the foaming agent is 10% of the total weight of the granules in the reaction kettle, and pentane or butane can be used as the foaming agent.

4. The fireproof and wear-resistant engineering material as claimed in claim 1, wherein the pressure in the pre-foaming barrel in S3 is controlled to be 0.5-1.2 bar, and the temperature is controlled to be 111-123 ℃.

5. The fireproof and wear-resistant engineering material as claimed in claim 1, wherein the cooling manner in S4 is vacuum cooling, the temperature in the mold is maintained at 70-105 ℃, the temperature of the vacuum cooling water is controlled at 25 ± 2 ℃, and the pressure is controlled at 3.2-4 Kg/cm²。

6. The fireproof and wear-resistant engineering material of claim 1, wherein the stirring speed of the polymerization kettle in S1 is controlled to be 75-105 r/min, and the stirring speed of the impregnation kettle in S2 is controlled to be 85-115 r/min.

Technical Field

The invention relates to the technical field of new engineering materials, in particular to a fireproof and wear-resistant engineering material.

Background

With the rapid development of cities in China, high-rise buildings become an important facility which needs to be reduced in city construction gradually, and although the high-rise buildings can provide a lot of convenient conditions for people, the fire safety becomes more important, so that the heat-insulating fireproof material is particularly important for the safety of the high-rise buildings and directly related to the safety of people.

The Chinese patent discloses an external wall heat-insulating material (No. CN104710154A), compared with the traditional external wall building material, the heat-insulating material has good heat-insulating property, strong coagulability, difficult falling and worth of popularization and application, but the whole strength is not high, the density is larger, and further the heat-insulating material is easy to damage and has poor wear resistance in engineering projects. Accordingly, those skilled in the art have provided a fire-resistant and wear-resistant engineering material to solve the problems set forth in the background art.

Disclosure of Invention

The invention aims to provide a fireproof and wear-resistant engineering material to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a fireproof and wear-resistant engineering material comprises styrene, Polystyrene (PS), soft water, a dispersing agent, a flame retardant and a foaming agent, and the implementation method comprises the following steps:

s1, mixing styrene, Polystyrene (PS), soft water, a dispersing agent and a flame retardant according to the weight ratio of 92: 8.7: 1.2: 120: 5, dissolving and mixing, adding the mixture into a polymerization kettle, adding an initiator, stirring, heating to 90 +/-2 ℃, keeping the pressure in the polymerization kettle at 0.3MPa, reacting for 6 hours, heating to 115 ℃ and 135 ℃ respectively, polymerizing for 2-3 hours, filtering after PS particles are cured, putting the PS particles into a washing tank for washing, dehydrating, drying, and adding the PS particles into a storage bin for later use;

s2, adding the granules obtained in the step S1 into an impregnation kettle containing a foaming agent, continuously stirring, controlling the temperature in a reverse impregnation kettle to be 80-90 ℃, controlling the pressure to be 0.9MPa, impregnating for 5 hours, cooling to below 40 ℃, washing, dehydrating, drying, adding an external lubricant, forming EPS beads, and storing in a raw material tank;

s3, conveying the EPS beads in the raw material tank into a pre-foaming barrel through a screw conveyor, and allowing the EPS beads to pass through the pre-foaming barrelThe EPS beads are expanded and increased in volume by steam heating, so that the density of the EPS beads is correspondingly changed and controlled to be 15-20 kg/m³The heat softens the polystyrene, the foaming agent pentane stored in the EPS beads starts to boil and gasify, the gasified pentane gas increases the pressure in the EPS beads to expand the EPS beads, the pre-expanded EPS beads enter a vibrating screen to be screened out to obtain particles with proper sizes after passing through a fluidized bed, the pre-expanded EPS beads are sent into a curing bin by a feeder to be cured, so that air permeates into the EPS beads and reaches the balance of internal and external pressures, the EPS beads are stable, the curing time is controlled to be 3-6 hours, the air introduced into the lower part of the fluidized bed penetrates through a material layer in a state of random filling of solid particles from bottom to top, when the air flow rate reaches or exceeds the critical fluidization speed of the particles, the particles in the material layer are overturned up and down, and part of the particles are carried out of the material layer by the air flow, so that the processing of the particle materials in the fluidized bed can be continuously fed and discharged like fluid, and because the particles are well mixed;

s4, feeding the cured EPS beads into a pressure tank, applying pressure of 0.4-0.7 Mpa in the pressure tank, injecting the raw materials into a mold through a feeding gun, cooling and molding, and cutting into the finished products.

As a still further scheme of the invention: the weight of the initiator is 10% of that of the mixed solution in the S1, the initiator can adopt dibenzoyl peroxide, di-tert-butyl peroxide or benzoyl peroxide, and the dispersing agent can adopt calcium sulfate.

As a still further scheme of the invention: the weight of the foaming agent is 10% of the total weight of the granules in the reaction kettle, and pentane or butane can be used as the foaming agent.

As a still further scheme of the invention: the pressure in the pre-foaming barrel in the S3 is controlled to be 0.5-1.2 bar, and the temperature is controlled to be 111-123 ℃.

As a still further scheme of the invention: the cooling mode in the S4 adopts vacuum cooling, the temperature in the die is kept between 70 and 105 ℃, the temperature of the vacuum cooling water is controlled to be 25 +/-2 ℃, and the pressure is controlled to be 3.2 to 4Kg/cm²。

As a still further scheme of the invention: the stirring speed of the polymerization kettle in the S1 is controlled to be 75-105 r/min, and the stirring speed of the dipping kettle in the S2 is controlled to be 85-115 r/min.

Compared with the prior art, the invention has the beneficial effects that:

styrene, Polystyrene (PS), soft water, a dispersing agent and a flame retardant are added into a polymerization kettle to react to generate PS particles, then the PS particles are added into an impregnation kettle containing a foaming agent to react to generate EPS beads, then the EPS beads are sequentially added into a pre-foaming barrel, a fluidized bed, a vibrating screen and a curing bin to react to generate cured materials, then the cured materials are injected into a pressure tank, then the cured materials are injected into a mold through a feeding gun to be cooled and molded, and the cooled and molded materials have the advantages of high strength, small density, light weight, good wear resistance and long service time.

Drawings

FIG. 1 is a schematic process diagram of a fireproof and wear-resistant engineering material;

FIG. 2 is a schematic view of a process of foaming and forming in a fireproof and wear-resistant engineering material,

fig. 3 is a pressure-displacement graph.

Detailed Description

Referring to fig. 1 to 3, in an embodiment of the present invention, a fireproof and wear-resistant engineering material includes styrene, Polystyrene (PS), soft water, a dispersant, a flame retardant, and a foaming agent, and an implementation method includes the following steps:

s1, mixing styrene, Polystyrene (PS), soft water, a dispersing agent and a flame retardant according to the weight ratio of 92: 8.7: 1.2: 120: 5, dissolving and mixing, adding the mixture into a polymerization kettle, adding an initiator, stirring, heating to 90 +/-2 ℃, keeping the pressure in the polymerization kettle at 0.3MPa, reacting for 6 hours, heating to 115 ℃ and 135 ℃ respectively, polymerizing for 2-3 hours, filtering after PS particles are cured, putting the PS particles into a washing tank for washing, dehydrating, drying, and adding the PS particles into a storage bin for later use;

s2, adding the granules obtained in the step S1 into an impregnation kettle containing a foaming agent, continuously stirring, controlling the temperature in a reverse impregnation kettle to be 80-90 ℃, controlling the pressure to be 0.9MPa, impregnating for 5 hours, cooling to below 40 ℃, washing, dehydrating, drying, adding an external lubricant, forming EPS beads, and storing in a raw material tank;

s3, conveying the EPS beads in the raw material tank into a pre-foaming barrel through a screw conveyor, heating the EPS beads in the pre-foaming barrel through steam to expand the EPS beads, increasing the volume of the expanded EPS beads, and controlling the density of the expanded EPS beads to be 15-20 kg/m³The heat softens the polystyrene, the foaming agent pentane stored in the EPS beads starts to boil and gasify, the gasified pentane gas increases the pressure in the EPS beads to expand the EPS beads, the pre-expanded EPS beads enter a vibrating screen to be screened out to obtain particles with proper sizes after passing through a fluidized bed, the pre-expanded EPS beads are sent into a curing bin by a feeder to be cured, so that air permeates into the EPS beads and reaches the balance of internal and external pressures, the EPS beads are stable, the curing time is controlled to be 3-6 hours, the air introduced into the lower part of the fluidized bed penetrates through a material layer in a state of random filling of solid particles from bottom to top, when the air flow rate reaches or exceeds the critical fluidization speed of the particles, the particles in the material layer are overturned up and down, and part of the particles are carried out of the material layer by the air flow, so that the processing of the particle materials in the fluidized bed can be continuously fed and discharged like fluid, and because the particles are well mixed;

s4, feeding the cured EPS beads into a pressure tank, applying pressure of 0.4-0.7 Mpa in the pressure tank, injecting the raw materials into a mold through a feeding gun, cooling and molding, and cutting into the finished products.

Preferably, the weight of the initiator is 10% of the weight of the mixed solution in S1, the initiator may be dibenzoyl peroxide, di-tert-butyl peroxide or benzoyl peroxide, and the dispersant may be calcium sulfate.

Preferably, the blowing agent is present in an amount of 10% by weight, based on the total weight of the pellets in the reaction vessel, and pentane or butane may be used as the blowing agent.

Preferably, the pressure in the pre-foaming barrel in S3 is controlled to be 0.5-1.2 bar, and the temperature is controlled to be 111-123 ℃.

Preferentially, the cooling mode in S4 adopts vacuum cooling, the temperature in the mold is kept between 70 ℃ and 105 ℃, the temperature of vacuum cooling water is controlled to be 25 +/-2 ℃, and the pressure is controlled to be 3.2-4 Kg/cm²。

Preferably, the stirring speed of the polymerization kettle in S1 is controlled to be 75-105 r/min, and the stirring speed of the dipping kettle in S2 is controlled to be 85-115 r/min.

Comparative example: common EPS heat insulation board in market