Development conditions and application of polyurethane spray equipment
发布时间： 2018-08-24 16:40 Author: Polyurethane foam machine Source: http: //motokone.com
Published: 2018-08-24 16:40
2. Development conditions of spraying equipment
Due to the characteristics of the polyurethane material, the spraying equipment should be able to meet the following fundamental requirements: compliance with the material's easy-to-adhesion properties, easy removal; compliance with the characteristics of the data's rapid response, rapid mixing and averaging; compliance with the dynamic requirements of the application site; simple structure, Easy operation and maintenance.
At present, the most commonly used spraying equipment is mainly a rapid foaming system. This foaming system is a professional spraying foaming equipment that stops working with a compressed air drive. The system includes three parts: gas-opening working part, raw material electric heating part, and temperature control part. Its structure is very complicated, and the requirements for operation and maintenance are high.
The structural requirements of the equipment and the functional requirements of the equipment based on the materials and processes must be met. The structural design of the spraying equipment must meet the following basic conditions: high-viscosity liquid materials can be pumped; and the two materials must be synchronized and supplied in equal quantities; low power However, it can adequately guarantee the quality of the spraying process; provide ample mixing place for the two materials; simple structure and can effectively use the power of the underground in time; no pollution to the environment.
Application of spraying equipment
1. Application in coal mines
The natural ignition of coal in coal mines is more prominent. Coal mines have adopted polyurethane spraying technology on the base of the liquid nitrogen fire extinguishing technology, which has effectively improved safety in underground mines.
2. Application in roof insulation engineering
Polyurethane spraying anti-leakage has been well applied in coal mines. Due to its poor air permeability, high foam closed cell ratio, and excellent heat insulation performance. Can be used in roof insulation projects. From 1995 to 1996, the thermal insulation disposal of the roof of the bungalow and the small building of the medical office were stopped after the Beijing Mining Research Institute of the General Research Institute of Coal Science. The spraying equipment stopped working, and the thermal insulation layer had a uniform thickness of 30 mm and a deviation of ± 10 mm. The top covers the reflective layer to maintain the material. After construction, in summer * hot weather, the indoor temperature on the top floor is about 3 ° C lower than the indoor temperature on the top floor of the adjacent building. The thermal insulation effect is very clear.
3. Application in wall cold storage
4. Application on insulation pipes
Polyurethane spraying equipment is
easy to operate, easy to control the thickness of the sprayed layer, and does not require the use of molds when spraying, which is very beneficial for large-area construction
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