Rock wool board is a construction material, so it is widely used, and the raw materials it produces are also very popular, and the price is not high, so many people are willing to invest in rock wool sandwich board production lines. production line, so that it can produce rock wool boards in large quantities.
Because only by mass production of rock wool boards, can the competitiveness of Realize your dream of wealth.
1. Rock wool sandwich panel line determines product competitiveness
The rock wool sandwich panel line determines the product competitiveness of rock wool panel manufacturers,because for rock wool panel manufacturers, in order to produce better quality rock wool panels, first of all, when purchasing a rock wool sandwich panel line, it is necessary to Choose the rock wool lines produced by high-quality enterprises.
Because the rock wool sandwich panel line produced by regular enterprises has relatively high technical content,when the mineral wool production line produced by such an enterprise is used, the work efficiency will be higher and the quality of the processed rock wool panel will be higher.It will be better, so that users can choose the rock woolboard produced by the manufacturer when choosing.
Therefore, for rock wool board manufacturers, if the products they want to produce are more competitive and can be recognized and chosen by more consumers, they must choose the rock wool sandwich board production line produced by regular enterprises, because only in this way can they be produced. The quality of the rock wool board products will be higher, the competitiveness will be improved, and the company will develop and grow as soon as possible.
1. The purchase of rock wool sandwich panel line manufacturers
When it comes to the rock wool sandwich panel line, as a professional rock wool panel production equipment manufacturer, we definitely have a certain right to speak. We have been engaged in the production and research and development of rock wool equipment for many years. The first choice of equipment manufacturers, then we will introduce you to the purchase of large-scale rock wool sandwich panel lines, so that you can better understand our industry.
0f course, when purchasing a large-scale mineral wool sandwich panel production line, you should first pay attention to its professional performance. lf a company has many years of production experience, and the product has been recognized by the relevant national departments, it is absolutely excellent, and our rock wool The large rock wool sandwich panel line produced by the panel production equipment manufacturer is definitely your best choice.
In addition, you also need to consider the applicable performance of the rock wool sandwich panel line. There are many types of rockwool production line. Of course, not all rock wool equipment meets the conditions of each manufacturer. The performance of cotton equipment is also different, so when choosing a certain model, you should also proceed from your own situation.
lf you need a large-scale rock wool sandwich panel line, you can come to us to buy, and we also welcome new and old customers to discuss cooperation.
There are many kinds of concepts about strength in polyurethane sandwich panel design, mainly for polyurethane foam core materials and polyurethane sandwich panel products produced by sandwich panel lines. For polyurethane foam core materials, we need to pay attention to compressive strength, bending strength, tensile strength and shear strength, while for polyurethane sandwich panel products, we need to pay attention to bonding strength,flexural bearing capacity and compressive strength, also known as compressive strength,which refers to the relativedeformation of polyurethane foam style s= 40% of the stress per unit area. The direction of false load should beparallel to the product thickness and the direction of foam initiation.
Bending strength: place the polyurethane foam pattern on two supports, apply load at a certain rate in the centre of the pattern, and the maximum bending of the pattern when the specified deformation envelope is equal to 1.5 times the thickness of the pattern. Stress will destroy the load.Tensile strength is the maximum tensile stress per unit areaof polyurethane foam when it is stretched to fracture.
The standard polyurethane foam sample prepared under the specified conditions of shear strength, under certaintest conditions, applies a force parallel to the adhesive layer to the substrate, making the maximum average shearforce that can be borne by the unit bonding area when the bonding surface has a shear failure.
The bonding strength is the maximum load per unit area when the surface steel plate of the polyurethane sandwich panel style is separated from the new polyurethane foam.After reading the bearing capacity, apply the load force andload point on the surface of the polyurethane sandwich panel according to the regulations. When the deflectionreaches l0/200 (roof slab)or l0/150(wallboard), the load at this time is the bending capacity.
Effect of strength on polyurethane sandwich panel
This part will llustrate the main strength, compressive strength, bonding strength and flexural capacity involved in the application and various standards， and their impact on the polyurethane sandwich panel is analyzed. Compressive strength is the ability of polyurethane to resist compressive load without failure. In our application, the compressive strength is mainly used to evaluate the possibility of shrinkage deformation of foam. During the reaction foaming of raw materials, the internal pressure of foam is greater than the external pressure, and the foam continues to expand. When the internal and external pressures of foam are equal, the shape of foam tends to best able and no obvious changes will occur. With the ageing of foam, the foaming agent in foam condenses, resultingin the internal pressure of foam being less than the external pressure. The maximum internal and external pressuredifference after ageing is a standard atmospheric pressure，which is also the origin of the lower limit of thecompressive strength of polyurethane rigid foam. The shrinkage of foam will cause the failure of insulationperformance of the cold storage body and the insufficient strength of the cold storage body, causing the risk ofcollapse. Therefore, the greater the compression strength, the lower the possibility of shrinkage deformation ofpolyurethane foam, and the higher the safety of the polyurethane cold storage board.
The bonding strength represents the ability of the metal surface and polyurethane core of the sandwich panel to resist tensile load without separation.There are generally two ways of bonding metal surface and polyurethane core:glue bonding and polyurethane self-adhesive. The raw materials，process and equipment of sandwich panel production will affect the bonding effect of the two bonding methods. lf the bonding effect is not good and the bonding strength is not low, then when the polyurethane sandwich panel is affected by external forces in the application, the metal surface layer may be separated from the polyurethane core material, resulting in the safety risk of personnel falling during installation, daily use and maintenance.Therefore, the greater the bonding strength, thehigher the reliability of the polyurethane sandwich board and the longer the service life.
Bending capacity represents the bending resistance of polyurethane sandwich panels after being loaded.The test is to simulate the maximum bending capacity of the sandwich panel when the surface is trampled by people, objects are placed or other pressures are bent to a certain limit. The polyurethane performance, metal surface performance and glue performance are affected. The low bending capacity will cause bending failure or even fracture of the polyurethane sandwich panel.It will also cause the safety risk of personnel falling during installation, daily use and maintenance.Therefore, the greater the bending bearing capacity, the higher the stability of the polyurethane sandwich panel and the stronger the bending resistance.
How to improve the strength of polyurethane sandwich panel
The methods to improve the strength of polyurethane sandwich panels are mainly analyzed from four aspects: raw material formula, temperature, time and auxiliary sandwich panel-making machine in the production process. In terms of raw material formula, we use the current mainstream PIR formula system to analyze.In the formula, the isocyanate is black material with high NCO content and high functionality, the polyol is polyether with high hydroxylvalue and phthalic anhydride polyester, and flame retardant is used as little as possible.Reasonable catalystcoordination and reducing the amount of foaming agent can improve the strength of polyurethane, so a reasonable raw material formula is the premise to improve the strength of polyurethane cored board.
ln terms of temperature, the appropriate temperature is the necessary condition for the standardization of the reaction and the premise to ensure the intensity.Controlling the temperature of the metal surface ensures the reaction speed of polyurethane foam，provides external heat support for chemical reaction and controls the temperature of the double track, which ensures the forming condition of polyurethane foam so that the track shoes have considerable strength. By controlling the temperature of the measuring plate, the later curing of polyurethane foam is ensured.The better the curing is, the higher the strength is.
The time control mainly controls the wire drawing time and the time interval between touching the top. Through experimental comparison, we found that the length of the time interval is inversely proportional to the compressive strength. The compression strength can be increased by about 10% every time the interval between drawing and topping is reduced by one second. On the premise of ensuring that the polyurethane sandwich panel is filled, the time difference between drawing and topping can be reduced as far as possible,which can effectively improve thecompression strength.
In terms of sandwich panel machinery, corona and glue are applied to the surface steel plate to improve the bonding strength.Corona can remove the dust and oil stains on the surface of the steel plate, form lines on the surface of the steel plate, and increase the adhesion. Glue application can increase the adhesion between polyurethane and the steel plate.The lower steel plate is coated with glue PIR foam, which is brittle and does not have self-adhesion when polyurethane is in contact with the lower steel plate. The upper steel plate is bonded by the self-adhesion of polyurethane itself, Generally, glue is not required.
Rock wool boards are currently used in a wide range of applications in China,so rock wool boards can be used in many places, so the sales volume of rock wool boards is particularly large,so many people are willing to invest in rock wool sandwich board production lines. By investing in such a production line, a large number of rock wool panels can be produced, so many people can realize their wealth value as soon as possible by investing in a mineralwool sandwich panel production line. A welcome small-scale investment, and such an investment has little risk and quick returns,so it is particularly popular.
1. Market development of rock wool sandwich panel line
Since the rock wool lines is continuously produced in batches, the production volume is particularly large. In addition, because the amount of rock wool sandwich panels is particularly large, the produced rock wool panels are particularly fast in terms of sales. It can be sold, and the price difference is also very large, so investing in a small investment such as rock wool sandwich panel line not only pays back the capital very quickly, but also the investment capital is also very small, and the capital turnover is also very fast, so such a kind of Small investments are especially popular.
Because the investment in mineral wool production line is very popular at present, many people realize their dream of wealth as soon as possible after investing, but for users who want to buy rock wool panel production,if they want to make rock wool sandwich The board production line can achieve higher work efficiency during production. lt is necessary to choose the rock wool sandwich board production line produced by professional enterprises.
Nowadays, many people choose to use rock wool insulation materials for decoration when building factories, but everyone does not know whether this product is expensive or not, and whether it is of good quality or not. In fact, there are many types of rock wool, some brands of rock wool are very expensive, and some brands are very cheap. Choice becomes a big issue.
2. Business opportunities of rock wool sandwich panel line
Rock wool decoration is an important project. Everyone has very high requirements for themselves when they are doing decoration. They all hope that the best quality rock wool can be used during decoration, and they also hope that they can be finished once and for all.
But sometimes you really can't buy good rock wool materials.Let us tell you here.In fact, as long as it is something that comes off the rockwool production line, the quality is still okay, because after a series of integration, it finally comes out. The products must also set everyone's advantages. Therefore,many people saw this business opportunity, instead of doing rock wool business, they started the business of rock wool sandwich panel line.
What is the density of polyurethane foam? The density of polyurethane foam mainly has three concepts: feed density, bulk density and core density. Feeding density refers to the capacity of the foaming material in the production of cold storage panels, bulk density refers to the overall density of the foam after curing and molding, and core density refers to the density of the core foam after the foam is cured and molded and the skin is removed. The core density is the key factor that affects the physical properties of the cold version. Since a small amount of blowing agent will volatilize into the air when the foam is cured, and there is a dense skin on the edge of the polyurethane foam, the relationship between the three can be roughly converted into, the same density is equal to 1.1 times the core density, and the bulk density is equal to 1.05 times the core density.
Method for Determination of Density of Polyurethane Foam
What is the standard method for determining the density of polyurethane foams? The determination of polyurethane foam density can be based on the national standard GBT6343, the determination of the apparent density of foamed plastics and rubber. First, we need to take a regular geometric polyurethane foam at the center of the cold storage board for accurate measurement, and then weigh the mass M of the foam with a balance, then measure the length, width and height of the foam and calculate the volume force, and finally use the formula ρ=M/V to get The density of the foam can be calculated. GBT6343 needs proper size and regularity, so how can we measure for irregular samples? At this time, we can use the Archimedes drainage method. First, we also use the balance to weigh the mass m of the foam, then press the foam completely into the water in the beaker, and read the value M on the balance after it is stable. The large M is approximately equal to the volume of the foam, and finally the density of the foam is calculated using the formula ρ=m/M. There is a caveat here, considering the water absorption rate of polyurethane foam, the density measured by the Archimedes drainage method will be slightly higher than the actual density of the foam.
Effect of Polyurethane Density on Performance
The influence of density on the mechanical properties of polyurethane foam mainly involves compressive strength,flexural strength, tensile strength, shear strength, etc.The relationship between them can be simply summarized as,the higher the density, the better the mechanical properties.Mechanical properties are the key properties in the use of polyurethane foam. When it is inconvenient to test the mechanical properties of the foam, the density can be used as a reference index for physical properties. The effect of density on thermal conductivity, the general trend is that the density is between 40 and 50 kilograms per cubic meter, the thermal conductivity remains at the lowest point without significant change, while the density exceeds 50, the thermal conductivity increases with the increase of density, which is also very important. lt is a good explanation of why customers who have higher requirements on the insulation performance of sandwich panels in the market choose sandwich panels with a density of 40.Since polyurethane density has an effect on performance, how will foam density and performance differ when produced indifferent ways? The difference between the maximum density and the minimum density of the sandwich panel produced by a continuous sandwich panel line is within 10%.Compared with the products of the gap production method and the spray method, the uniformity of the foam density is excellent, so the performance of the continuously produced polyurethane sandwich panel is more stable. JINGGONG is specialized in manufacturing sandwich panel production machinery and production lines include continuous PU sandwich panel production line,rockwool production line,etc to provide you with professional sandwich panel production solutions. Get sandwich panel production line price now!
Rock wool production line equipment is more and more widely used in daily life. Consumers should clearly know theperformance of the rock wool complete set of equipment when using it, because it has a lot to do with the rock woolproduction line.
There are many models of rock wool lines in the current market. When choosing, we should look at the basicsituation of the equipment itself. When choosing, we can also know whether it can be used reasonably. The large-scale rock wool equipment itself is very user-friendly in design and easy to operate.
Jinggong is a manufacturer of building materials machinery and equipment. The rock wool material developed andprocessed can ensure good heat preservation during the application process.
1.The rock wool production line has a high degree of automation
when we make a selection, we must look at the basic condition of our rock wool production line and choose these equipment reasonably.In the specific use process, the advantages are also great, and it can be used simply.
When choosing mineral wool production line equipment reasonably, we still need to look at the type of products currently being produced and the overall situation. Only in this way can it be used more reasonably.
2. Excellent performance of rock wool made by rock wool production line
Rock wool series products have good fire resistance. In a society where people's awareness of fire prevention is getting stronger and stronger, rock wool products made by rock wool production lines are used more and more. The requirements for products are becoming more and more stringent. Excellent rock wool equipment can meet our needs.
Rock wool products have good thermal insulation effect, the cotton fiber is fine and soft, the content of slag ball is low, and the thermal conductivity is low.
In addition, rock wool products have the function of sound insulation and drying, making our living space cleaner and a good resting environment. Therefore, a high-quality rock wool production line is very important.
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