CN103274725B - Gypsum compound type flame-retardant foaming agent - Google Patents

Abstract

The invention discloses a gypsum composite flame retardant foaming agent. The main point of the technical scheme is that the gypsum composite flame retardant foaming agent consists of plaster powder, attapulgite clay powder with air purification function, hydrogen peroxide, hydrogen Composed of magnesium oxide, fatty alcohol polyoxyethylene ether sodium sulfate, ultrafine polyvinyl alcohol powder, simethicone oil and water; first mix the gypsum composite flame retardant foaming agent paste ingredients to form a paste, and then mix the gypsum The composite flame retardant foaming agent is mixed with ingredients to form the finished product of the gypsum composite flame retardant foaming agent. After the gypsum composite flame retardant foaming agent is mixed with water at high speed, a porous foam slurry is formed, which can quickly isolate the contact between combustible materials and air, and achieve the purpose of flame retardancy and fire extinguishing; the product produced by using the gypsum composite flame retardant foaming agent , not only has the effect of flame retardant, heat preservation, heat insulation, sound insulation, but also has the function of purifying the air; the gypsum composite flame retardant foaming agent is suitable for the production of flame retardant fire extinguishing, light board, light wall and noise reduction products .

Description

Gypsum composite flame retardant foaming agent

technical field

The invention relates to a foaming agent, in particular to a gypsum composite flame-retardant foaming agent.

Background technique

With the increasing awareness of global safety and environmental protection, people have higher and higher requirements for fire safety and flame retardancy of products. Halogen-free, low-smoke, low-toxic environment-friendly flame retardants have become the goal pursued by people.

Flame retardants currently mainly include organic and inorganic, halogen and non-halogen. Organic is some flame retardants represented by bromine, phosphorus nitrogen, nitrogen and red phosphorus and compounds, and inorganic is mainly antimony trioxide, magnesium hydroxide, magnesium hydroxide, silicon and other flame retardant systems.

Foaming agents can be divided into three categories: chemical foaming agents, physical foaming agents and surfactants. Foaming agents with more uses include cement foaming agents, concrete foaming agents, plastic foaming agents, and polyurethane foaming agents. , rubber foaming agent, glass foaming agent, etc.

Although there are many types of flame retardants and foaming agents and they are widely used, they have the disadvantages of insufficient performance and cannot meet the needs of actual production and environmental protection. The existing flame retardants and foaming agents do not have the function of purifying air.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies in the prior art and provide a gypsum composite flame retardant foaming agent.

The gypsum composite flame retardant foaming agent consists of plaster of paris powder, attapulgite clay powder with air purification function, hydrogen peroxide, magnesium hydroxide, fatty alcohol polyoxyethylene ether sodium sulfate, ultrafine polyvinyl alcohol powder, dimethyl Composed of silicone oil and water.

The production method of the gypsum composite flame retardant foaming agent: first input the ingredients of the gypsum composite flame retardant foaming agent paste into the low-speed mixer and stir into a paste, and then input the ingredients of the gypsum composite flame retardant foaming agent into the high-speed mixer Stirring in medium is the finished product of gypsum composite flame retardant foaming agent.

Natural dihydrate gypsum, also known as raw gypsum, can be calcined and ground to get plaster of paris powder; the microporous structure and heating dehydration of gypsum and its products make it have excellent sound insulation, heat insulation and fireproof performance, plaster of paris Powder is a conventional product in the building materials industry.

Attapulgite clay powder with air purification function is composed of high-viscosity attapulgite clay, attapulgite constant humidity conditioner, natural mineral adsorption filter, arborvitae leaves, aluminum silicate fiber and polyacrylamide; it has good bonding Sexuality, plasticity, thixotropy, fire resistance and thermal stability; it can effectively absorb harmful substances such as formaldehyde, ammonia and benzene in the air, protect the environment and improve people's health.

High-viscosity attapulgite clay is attapulgite clay produced by the process of increasing the viscosity of attapulgite clay. Attapulgite clay is fine in texture, has a slippery feeling of oil, light in weight, brittle in nature, and has a shell-shaped or uneven fracture. Strong water absorption, viscous and plastic when wet, its viscosity can reach more than 3000mPa·s, which is conducive to the bonding of raw materials.

High-viscosity attapulgite clay powder refers to taking 28.0g of attapulgite clay powder sample, adding it to the suspension cup of the high-speed mixer, then adding 372g of water, placing the suspension cup on the high-speed mixer, and stirring at 11000 rpm Stir at high speed for 20 minutes, then pour the high-speed stirred sample suspension into a 250ml beaker, use the NDJ-1 rotational viscometer to test the viscosity of the suspension, and test the attapulgite with a viscosity value ≥ 2200 mPa·s clay powder.

Hydrogen peroxide is commonly known as hydrogen peroxide, and its appearance is a colorless transparent liquid. It is a strong oxidizing agent. The mass fraction of industrial hydrogen peroxide selected in the present invention is ≥35%. When mixed with ingredients such as plaster of paris powder and attapulgite clay powder with air-purifying function, a large number of air bubbles will be generated.

Magnesium hydroxide is a white amorphous powder. It releases bound water and absorbs a large amount of latent heat when it is thermally decomposed to reduce the surface temperature of the synthetic material it fills in the flame. Combustible gas is used for cooling, and the magnesium oxide generated by decomposition is a good refractory material, which can also help improve the fire resistance of synthetic materials. At the same time, the water vapor it emits can also be used as a smoke suppressant; Excellent flame retardant with triple functions of burning, suppressing smoke and filling.

Fatty alcohol polyoxyethylene ether sodium sulfate is easily soluble in water, has excellent detergency, emulsification, foaming performance and hard water resistance, and is an anionic surfactant.

Ultrafine polyvinyl alcohol powder is a white, powdery, stable, non-toxic water-soluble polymer, which can be quickly dissolved in water at room temperature to form a stable colloid. Water is a good solvent for polyvinyl alcohol. Polyvinyl alcohol has good film-forming properties, and the formed film has excellent adhesion, solvent resistance, friction resistance, tensile strength and oxygen barrier properties, can increase the viscosity of the foam, has a certain foam stabilizing effect, and can improve The overall strength of the product produced by gypsum composite flame retardant foaming agent.

Simethicone oil has low surface tension, insoluble in water, good chemical stability, and non-toxic. It is a defoamer and film release agent, used to eliminate invalid air bubbles generated during the foaming process and improve the closing rate of the cells. It is also conducive to rapid release of the film and prevention of mold collapse when pouring foam materials. It is used for flame retardant and fire extinguishing at fire extinguishing sites, and simethicone oil may not be added.

The present invention is achieved through the following technical solutions:

1. The ingredients of gypsum composite flame retardant foaming agent are composed of the following components by weight percentage: gypsum composite flame retardant foaming agent paste 5~75%, hydrogen peroxide 1~35%, dimethyl silicone oil 0~ 5% and water 1-85%.

The production method of the gypsum composite flame retardant foaming agent: input the ingredients of the gypsum composite flame retardant foaming agent into a high-speed mixer for stirring, the speed of the mixer is controlled at 1400-1800 rpm, and the stirring time is controlled at 1-30 Minutes, after stirring evenly, it is the finished product of gypsum composite flame retardant foaming agent. The gypsum composite flame retardant foaming agent contains a large number of stable dense bubbles.

The ingredients of the gypsum composite flame-retardant foaming agent paste are composed of the following components by weight percentage: 5-55% of plaster powder, 5-45% of attapulgite clay powder with air purification function, 1-45% of magnesium hydroxide 35%, fatty alcohol polyoxyethylene ether sodium sulfate 0.01-15%, superfine polyvinyl alcohol powder 0.01-5% and water 5-55%.

The production method of the gypsum composite flame retardant foaming agent paste: input the ingredients of the gypsum composite flame retardant foaming agent paste into a low-speed mixer for stirring, the speed of the mixer is controlled at 600-800 rpm, and the stirring time It is controlled within 1-20 minutes, and after stirring evenly, a gypsum composite flame retardant foaming agent paste is formed, and some air bubbles have been generated in the gypsum composite flame retardant foaming agent paste.

The ingredients of the attapulgite clay powder with the function of purifying air are composed of the following components by weight percentage: 35-60% of high-viscosity attapulgite clay, 10-35% of attapulgite constant-humidity conditioner, 5% of natural mineral adsorption filter agent ～20%, 2～15% of arborvitae leaves, 1～5% of aluminum silicate fiber and 0.1～3% of polyacrylamide.

The production method of the attapulgite pottery clay powder with air-purifying function is: (1) mix the ingredients of the attapulgite pottery clay powder with air-purifying function and input them into a pulverizer for pulverization, and the particle fineness of the pulverized mixture is less than 0.5 mm; (2) Put the powdery mixture into the soaking and stale pool for soaking and staling with water to make semi-finished products, and the soaking and stale time is controlled within 7 to 30 days; (3) Input the semi-finished products into the vacuum extruder and extrude them into cylindrical strips, cylindrical strips The diameter of the cylindrical strip is controlled at 2 to 10 mm; (4) input the cylindrical strip into the cement drying yard for drying, and the moisture content of the dried cylindrical strip is less than 15%; (5) input the dried cylindrical strip into the mill The powder is milled in the machine, and the particle size of the powder is less than 0.074mm.

The attapulgite clay powder with air-purifying function is the "attapulgite clay powder with air-purifying function" applied by the inventor on February 25, 2011. The Chinese patent authorization announcement number is: CN 102173743 B, and the authorization announcement date is: July 25, 2012.

The high-viscosity attapulgite clay is attapulgite clay produced by a processing technique for increasing the viscosity of attapulgite clay, and is characterized in that the attapulgite clay mined from the mining area needs to undergo natural weathering for 30 to 120 days; The permanent treatment method is: calculated by weight percentage, take 94-98% of the naturally weathered attapulgite clay, add 2-6% sodium carbonate evenly, and input it into the soaking pool together, add clear water to soak and age, and the soaking time is 72 ~120 hours; take the soaked attapulgite clay, input it into the mixer for stirring, and extrude the stirred attapulgite clay into thin slices through an extruder, and its thickness is controlled at 0.5-2 mm. The clay flakes are dried in the air, and the water content of the attapulgite clay flakes after drying is ≤15%; the ingredients are calculated by weight percentage: 94-98% of attapulgite clay after drying, 0.5-5% of superabsorbent resin and cellulose 0.5-3%, the above-mentioned ingredients are stirred, and after being evenly stirred, they are input into a mill for grinding, and the particle fineness is ≤0.074 mm.

The above-mentioned production process adopts the "Processing Process for Improving the Viscosity of Attapulgite Clay" applied by the inventor on June 20, 2005. The Chinese patent authorization announcement number is: CN 1317067C, and the authorization announcement date: May 23, 2007.

The water content is in weight percentage.

The present invention selects the mass fraction of industrial hydrogen peroxide ≥ 35%, and adjusts the proportioning percentage of industrial hydrogen peroxide by adding water at the production site, which is beneficial to reduce transportation costs and production costs, and improve the foaming quality of products.

The gypsum composite flame retardant foaming agent is a paste foaming agent, which is used for fast flame retardant and fire extinguishing on site after being mixed with water; it can also be produced directly by using the gypsum composite flame retardant foaming agent on the construction site Flame retardant and fire extinguishing, lightweight panels, lightweight walls and noise reduction products to save production costs.

The gypsum composite flame retardant foaming agent quickly releases a large amount of gas after adding water and high-speed stirring at the flame retardant and fire extinguishing site, forming a porous foam slurry. The foam slurry is sprayed by a high-pressure water gun and directly used for flame retardant and fire extinguishing. The foam slurry covers stably A foam mud film is formed on the surface of combustible materials, which can quickly isolate combustible materials from contact with air, prevent combustible materials from continuing to burn, and achieve the purpose of flame retardancy and fire extinguishing.

When hydrogen peroxide is simply used for foaming, bubbles are generated quickly, but some bubbles are also broken and disappeared quickly, resulting in poor foam stability. The invention is a composite foaming agent, a gypsum composite flame retardant foaming agent The paste has produced some bubbles during the production process. The gypsum composite flame retardant foaming agent is re-foamed on the basis of the gypsum composite flame retardant foaming agent paste. It has strong foaming ability and high foaming ratio. , It has the characteristics of large foam production per unit volume, fine and uniform cells that are not easy to break, fast demoulding speed, good surface finish and high strength in the later stage of the product.

The attapulgite clay powder with the function of purifying air is composed of high-viscosity attapulgite clay, instant sodium silicate, raw zeolite powder, acidified rice husk, acidified zeolite, acidified attapulgite clay, acidified bentonite, Composed of raw materials such as gypsum, volcanic rock, high alumina bauxite, arborvitae leaves, aluminum silicate fiber and polyacrylamide after acidification; it has good cohesiveness, plasticity, thixotropy, fire resistance and thermal stability, and can effectively Absorb harmful substances such as formaldehyde, ammonia and benzene in the air, protect the environment and improve people's health.

In the present invention, the attapulgite clay powder with the function of purifying air is used as the main raw material to produce the gypsum composite flame-retardant foaming agent, which fully exerts the effective function of the attapulgite clay powder.

Products produced with gypsum composite flame retardant foaming agent not only have the effects of flame retardancy, heat preservation, heat insulation, and sound insulation, but also have the function of purifying air; these products are used in highways, viaducts, urban light rails, subways, factories, In warehouses, public places and other facilities.

The gypsum composite flame retardant foaming agent is suitable for the production of flame retardant fire extinguishing, light board, light wall and noise reduction products.

Detailed ways

Below in conjunction with embodiment the present invention will be further described:

1. For the embodiment of flame retardant and fire extinguishing, the ingredients of gypsum composite flame retardant foaming agent are composed of the following components by weight percentage: gypsum composite flame retardant foaming agent paste 16%, hydrogen peroxide 6%, di Methyl silicone oil 0.0% and water 78%.

The production method of the gypsum composite flame retardant foaming agent: input the ingredients of the gypsum composite flame retardant foaming agent into a high-speed mixer for stirring, the speed of the mixer is controlled at 1600-1800 rpm, and the stirring time is controlled at 3 minutes. After being stirred evenly, it becomes the finished product of gypsum composite flame retardant foaming agent.

The ingredients of the gypsum composite flame retardant foaming agent paste are composed of the following components by weight percentage: 26% of plaster powder, 12% of attapulgite clay powder with air purification function, 16% of magnesium hydroxide, fatty alcohol poly Sodium oxyethylene ether sulfate 5%, superfine polyvinyl alcohol powder 0.8% and water 40.2%.

The production method of the gypsum composite flame retardant foaming agent paste: input the ingredients of the gypsum composite flame retardant foaming agent paste into a low-speed mixer for stirring, the speed of the mixer is controlled at 700-800 rpm, and the stirring time Control it for 5 minutes, and after stirring evenly, it will be a gypsum composite flame retardant foaming agent paste.

2. For the embodiment of producing lightweight boards, the ingredients of the gypsum composite flame retardant foaming agent are composed of the following components by weight percentage: gypsum composite flame retardant foaming agent paste 68%, hydrogen peroxide 23.95%, Simethicone 0.05% and water 8%.

The production method of the gypsum composite flame retardant foaming agent: input the ingredients of the gypsum composite flame retardant foaming agent into a high-speed mixer for stirring, the speed of the mixer is controlled at 1500-1600 rpm, and the stirring time is controlled at 6 minutes. After being stirred evenly, it becomes the finished product of gypsum composite flame retardant foaming agent.

The ingredients of the gypsum composite flame retardant foaming agent paste are composed of the following components by weight percentage: 26% of plaster powder, 22% of attapulgite clay powder with air purification function, 5% of magnesium hydroxide, fatty alcohol poly Sodium oxyethylene ether sulfate 3%, superfine polyvinyl alcohol powder 0.5% and water 43.5%.

The production method of the gypsum composite flame retardant foaming agent paste: input the ingredients of the gypsum composite flame retardant foaming agent paste into a low-speed mixer for stirring, the speed of the mixer is controlled at 650-750 rpm, and the stirring time Control it for 8 minutes, and after stirring evenly, it will be a gypsum composite flame retardant foaming agent paste.

Claims (1)

1. compound flame-retardant expanded dose an of gypsum, it is characterized in that, the compound flame-retardant expanded dose of batching of gypsum is made up of following component by weight percentage: the compound flame-retardant expanded dose of paste 5 ~ 75% of gypsum, hydrogen peroxide 1 ~ 35%, dimethyl silicone oil 0 ~ 5% and water 1 ~ 85%;

The production method that described gypsum is compound flame-retardant expanded dose: stir in compound for gypsum flame-retardant expanded dose of batching input homogenizer, the speed control of stirrer is at 1400 ~ 1800 revs/min, churning time controls at 1 ~ 30 minute, is the finished product of compound flame-retardant expanded dose of gypsum after stirring;

The compound flame-retardant expanded dose of paste batching of described gypsum is made up of following component by weight percentage: gesso 5 ~ 55%, the Attapulgite potter's clay powder 5 ~ 45% with air purification function, magnesium hydroxide 1 ~ 35%, polyoxyethylenated alcohol sodium sulfate 0.01 ~ 15%, micronized polyethylene alcohol powder 0.01 ~ 5% and water 5 ~ 55%;

The production method of the compound flame-retardant expanded dose of paste of described gypsum: stir in compound for gypsum flame-retardant expanded dose of paste batching input low-speed mixer, the speed control of stirrer is at 600 ~ 800 revs/min, churning time controls at 1 ~ 20 minute, is the compound flame-retardant expanded dose of paste of gypsum after stirring;

The described batching with the Attapulgite potter's clay powder of air purification function is made up of following component by weight percentage: high sticky attapulgite clay 35 ~ 60%, attapulite constant humidity amendment 10 ~ 35%, natural-minerals adsorptive filter medium 5 ~ 20%, Leafy twigs of Oriental Arborvitae 2 ~ 15%, aluminum silicate fiber 1 ~ 5% and polyacrylamide 0.1 ~ 3%;

The described production method with the Attapulgite potter's clay powder of air purification function is: (1) rear the input in pulverizer of batching mixing with the Attapulgite potter's clay powder of air purification function pulverized, the compound particles fineness after pulverizing is less than 0.5 millimeter; (2) pulverulent mixture is added and soak in old pond that to carry out soaking old process with water be work in-process, soak old time controling at 7 ~ 30 days; (3) inputted in vacuum-extruder by work in-process and be squeezed into cylindrical bar, the diameter control of cylindrical bar is at 2 ~ 10 millimeters; (4) cylindrical bar is input to cement threshing ground and carries out airing, the cylindrical bar water content after airing is less than 15%; (5) be meal by carrying out abrasive dust in the cylindrical bar input grinding machine after airing, the particle fineness of meal is less than 0.074 millimeter;

It is the attapulgite clay adopting the complete processing improving viscosity of attapulgite clay to produce that described height glues attapulgite clay, from the attapulgite clay of mining area exploitation, needs the weathering through 30 ~ 120 days; Modification processing method is: calculate by weight percentage, gets the attapulgite clay after weathering 94 ~ 98%, evenly adds 2 ~ 6% sodium carbonate, and in common input fermentation vat, add clear water and carry out immersion ageing, soak time is 72 ~ 120 hours; Get the attapulgite clay after immersion, stir in input stirrer, and by the attapulgite clay after stirring, be extruded into thin slice through extrusion machine, its gauge control at 0.5 ~ 2 millimeter, by attapulgite clay thin slice, carry out airing, the attapulgite clay thin slice after airing, its water content≤15%; Batching is calculated by weight percentage: the attapulgite clay 94 ~ 98% after airing, High hydrophilous resin 0.5 ~ 5% and Mierocrystalline cellulose 0.5 ~ 3%, above-mentioned batching is stirred, inputs in grinding machine and carry out abrasive dust, particle fineness≤0.074 millimeter after stirring;

The sticky attapulgite clay powder of this height refers to gets 28.0g attapulgite clay powder sample, add in the suspension cup of homogenizer, add 372g water again, suspension cup is placed on homogenizer, stir 20 minutes under the rotating speed of 11000 revs/min, to pour in the beaker of 250ml through high-speed stirring sample suspension again, use NDJ-1 type rotational viscosimeter to carry out the viscosity of testing its suspension, tested viscosity value>=2200 mPasattapulgite clay powder.