- All
- Product Name
- Product Keyword
- Product Model
- Product Summary
- Product Description
- Multi Field Search
Views: 10 Author: Site Editor Publish Time: 2021-06-29 Origin: Site
1. What is polyurethane spraying?
Polyurethane spraying technology is based on isocyanate and polyether as the main raw materials. Under the action of various additives such as blowing agent, catalyst, flame retardant, etc., through the use of special network equipment and mixing, the high-pressure spraying construction site is foamed. Into a high molecular weight polymer. Rigid polyurethane foam is a new type of biosynthetic research material developed with good thermal insulation and waterproof system functions. Its thermal conductivity coefficient is low, only 0.022～0.024W/(m².k). It is equivalent to half of the extruded board, which is the lowest thermal conductivity coefficient of all building insulation engineering materials in my country. Polyurethane spray flame retardant grades B1 and B2 can be used.
Rigid polyurethane foam is generally foamed at room temperature, and its molding process is relatively simple. In our refrigeration industry, rigid polyurethane foam is generally used for spraying.
Black material and white material: The scientific name of black material is polyisocyanate. Because it is a black viscous liquid, it is commonly called black material. Among them, MD is a kind of polyisocyanate, which is used in the production of refrigerator polyurethane foam.
The white substance is a white viscous liquid. In the industrial production of refrigerator polyurethane foam, it is usually mixed with polyether polyol and catalyst foam stabilizer.
The application of polyurethane spraying and the characteristics of product development
Polyurethane spraying is widely used in various industries, mainly in our refrigeration and HVAC industries:
Spray insulation for external cold storage;
Cold storage board insulation;
Solar insulation; refrigerator and freezer insulation; refrigerator container insulation;
Cold storage insulation we usually use polyurethane sandwich double-sided color steel cold storage insulation board, or directly spray the polyurethane facade on the wall for insulation. In southeastern my country, polyurethane sandwich double-sided color steel insulation panels account for the vast majority, while in the northwest, polyurethane vertical spraying accounts for the vast majority.
In 2021, despite the more complicated international situation, with the spillover of China's manufacturing capabilities and comprehensive national strength, the scale of my country's cross-border e-commerce will reach 1.98 trillion yuan, out of a high growth rate of 15%, and usher in a historical di
The electric sprayer has the advantages of simple structure, convenient operation, few failures, easy maintenance, low price, stable pressure, long operation time, wide application range and so on. There are many herbicide formulations, and different formulations have different formulation methods.
1. Unique impermeability:Rigid foam is a dense microcellular foam with a closed cell rate of more than 92% and a smooth self-skin. It is an excellent anti-seepage material.The rigid foam layer has no joints and is completely impermeable to water, which fundamentally eliminates the possibility of roo
Problems that should be paid attention to before and after use of polyurea spraying equipment:First of all, after spraying every day, or when changing the variety of spraying materials, the residual materials of spraying equipment and conveying pipelines should be removed, preferably once a day. The
As the name implies, with the rapid development of China's building energy saving market, polyurethane spraying equipment has been widely used in the field of building insulation and waterproofing, and the demand is increasing.
With the pace of green and civilized city construction, more and more attention is paid to the treatment and disinfection of domestic waste.1. The methods of garbage disposal, especially the methods of sorting and reusing garbage, have also appeared one after another, and gradually entered the ranks
Polyurea spray material is a new type of polymer material. Since this material has many different forms, and different forms of polyurea sprayers have many different characteristics, polyurea spray materials are widely used in contemporary society and industrial production.As the thermal insulation
All family members: According to the regulations of national statutory holidays and the actual situation of the company, the following arrangements will be made for the Spring Festival holiday in 2022: 1. There will be a 9-day holiday from January 29 (Saturday) to February 6 (Sunday); the prod
On January 25, 2022, Shandong Hightop Group donated a batch of epidemic prevention materials to the Jining Red Cross Society. Since the outbreak of the epidemic in Xi'an, and the end of the year is approaching, the pressure of prevention and control in all regions of the country has suddenly increas
There are four main categories of sprayer principles:1. Bernoulli principleBernoulli's principle is that in a fluid, the flow rate is large, the pressure is small; the flow rate is small, the pressure is strong. Fluid will automatically flow from high pressure to low pressure. When passing through t
content is empty!
