Views: 0 Author: Site Editor Publish Time: 2021-05-20 Origin: Site
The product of the polyurethane foaming machine is foam, and foam is needed in the production process. Therefore, foam is the standard to measure the performance of the foaming machine. The foaming quality is determined from the three aspects of foaming density, foaming uniformity and foaming secretion water. .
Is polyurethane foam board soundproof?
At present, polyurethane foam board is a better insulation material for exterior walls. Among the current insulation materials, the sealing rate of the polyurethane foam board is above 95%. It is a material with impermeable properties, and has the dual functions of heat preservation and waterproofing. However, polyphenylene sulfide has high water absorption, poor nozzle treatment, and easy waterproof failure. Polyurethane foam board is suitable for various shapes and structures, especially suitable for special-shaped horizontal and exterior curtain wall systems.
There are two types of polyurethane foams: soft foam and hard foam. The soft foam has an open-cell structure, and the hard foam has a closed-cell structure. The sound insulation performance of the polyurethane foam board is related to the cell shape of the foam material, and the sound absorption coefficient of the open polyurethane foam It is greater than the sound absorption coefficient of closed-cell polyurethane foam. In addition, the sound insulation performance of polyurethane foam is also affected by fillers and reinforcing agents.
So do you know where polyurethane foam is used in our lives?
In the morning, when we finished washing, we went to the kitchen and opened the refrigerator to fetch things. Have you ever wondered what the thick cabinet and door of the refrigerator are? This is polyurethane foam. Polyurethane foam can prevent the heat exchange inside and outside the refrigerator. If there is no polyurethane, the compressor of the refrigerator is likely to roar endlessly!
When you come to the company and walk into the lobby, you will find that the solid wood floor is very shiny, like a mirror, that is, the floor is covered with a layer of polyurethane paint. If the wooden floor is not coated with polyurethane, it is likely to be worn!
After work, come to the sports field and prepare to exercise. The shoes you wear have a wear-resistant and comfortable sole, which are also made of polyurethane! The firm adhesion of polyurethane adhesive and upper makes your shoes more comfortable to wear.
Finally, let's take a look at the rubber track, the waste rubber crushed into small particles, if there is no polyurethane adhesive to bond them together, these small particles will fly like sand.
Seeing this, do you think that polyurethane has applications in all aspects of our lives? All in all, the application of polyurethane products is quite extensive. Although we may not realize it in our lives, it is indeed used in our lives and occupies an indispensable position. See you next time!
Polyurea spraying equipment can be applied to building roofs, tunnels, subways, waterproofing of roadbeds, production of foam membranes and TV props, internal and external corrosion protection of pipelines, auxiliary cofferdam works, corrosion prevention of storage tanks and chemical tanks, pipeline
As we all know, polyurea spraying equipment is an essential tool in life, because of his wide range, multi-purpose, so that we not only in the enterprise even our life also change together. Then want to use good polyurea spraying equipment is not so easy, this time I will bring you after the use of
Polyurethane rigid foam in the state before molding is two kinds of liquid, in the molding of these two kinds of liquid mixing, through the polyurethane spraying machine to become a solid raw material, so the construction molding method is more mobile. As long as it is not crushed polyurethane rigid
Polyurethane foaming process, foam shrinkage, crispy, too soft, heartburn, cracking, smoke and other problems, how to analyze what causes.Polyurethane foaming process by the construction conditions, foaming equipment, construction technology and the impact of environmental temperature, there will be
The common ones are high pressure spraying, polyurethane spraying, hybrid spraying, and polyurea spraying. The construction industry usually uses high pressure sprayers, mostly for industrial production.High-pressure polyurethane spraying machine types:1, from the material of the spraying material i
Polyurethane foaming machine began to appear in foreign countries, with the ease of use and high efficiency by the production industry, and to be widely promoted and used. The polyurethane foaming machine directly determines the quality of the foam produced, even if the quality of the blowing agent
On April 12, CNMC-E3 polyurethane spraying machine was loaded in the industrial park and will be exported to France soon.CNMC-E3 polyurethane spraying machine is widely used in industrial maintenance, tunnel, subway, waterproofing of road base, production of foam film and television props, pipeline
Due to the demand of the production scale, many manufacturers will choose small polyurethane infusion foaming machine to help products for foaming, which can be more convenient for bonding, and in the subsequent use of the process is also more convenient for maintenance. So what are the characterist
Spring Festival does not close, for this year's Spring Festival holiday, CNMC Machinery's Ali International Station store got a good start. We started the year with a salesman, we harvested more than 1.4 million in sales, of which the largest single order reached one million.CNMC Machinery is a subs
Polyurethane sprayers may require special coatings and construction parameters when working with certain specialized types of wood. The following are some common types of specialty woods: