- Product Name
- Product Keyword
- Product Model
- Product Summary
- Product Description
- Multi Field Search
Views:104 Author:Site Editor Publish Time: 2020-09-26 Origin:Site
During the foaming process of the polyurethane foaming machine, there may be several problems such as sudden collapse, foam shrinkage, and thick polyurethane foaming opportunities. Let's understand the initial reasons for these problems together.
During the foaming process of the polyurethane foaming machine, a series of problems such as foam shrinkage, crispness, too soft, core burning, cracking, smoke, shedding, collapsed foam, coarse foam cells, kneading into fine powder, slow foaming at the initial stage of the reaction, slow inspiration, etc.
The polyurethane foaming machine suddenly becomes thick during the foaming process. The reasons for this situation:
1. Gel speed;
2. Low material purity, high flow rate ratio of total chlorine and acid;
3. Uneven mixing of materials;
4. Too much water in foaming agent or polyether;
5. Compound stabilizer, leakage or failure, etc.
Sudden collapse of the polyurethane foaming machine during the foaming process. There are three main reasons for this. One is the failure of the composite stabilizer or the addition of alkaline catalyst; the second is the rate of foaming gas generation, which reduces the number of amine catalyst materials that can be solved; the third is leakage or failure, and the tin catalyst can increase materials.
The above briefly describes a few unexpected problems in the foaming process of the polyurethane foaming machine. For more information on polyurethane, please continue to pay attention to Hitop Machinery. https://www.chinapumach.com/
With the development of technology and society. Polyurethane spraying machines are also constantly developing and producing higher quality products. From manual foaming to low-pressure spraying machines to the current high-pressure spraying machines, they are also constantly updated and upgraded, co
Polyurea spray equipment is usually used in construction, mainly because polyurea has a strong anti-corrosion effect. Has a certain adhesion and strength. In order to improve the adhesion of the coating, it is necessary to strictly control the substrate used and improve it if necessary, so the polyu
The cold fog machine was once called the normal temperature fog machine, which is relatively speaking with the hot fog machine. It uses high-pressure air generated by an air compressor to form a high-speed rotating airflow through a pneumatic atomizing nozzle. The liquid medicine is formed into tiny
Polyurethane is a heat-insulating and waterproof coating. In buildings, its heat insulation and waterproof functions are widely used. Polyurethane spraying machine is a high-pressure polyurethane spraying equipment, because the material of the high-pressure spraying equipment collides and rotates vi
he polyurea spraying machine includes the main engine, spray gun, feed pump, feed pipe, A component, R component, heating hose and many other parts, which must be connected reasonably to ensure the smooth completion of the spraying operation.The two lifting pumps are respectively inserted into the i
Cold storage insulation we usually use polyurethane sandwich double-sided color steel cold storage insulation board or directly spray polyurethane facade on the wall for insulation. In the southeast of my country, polyurethane sandwich double-sided color steel cold storage insulation boards are most
(1) It does not contain a catalyst, and the curing speed is very fast. It can be sprayed on any kind of curved, inclined and vertical outermost layer without sagging, and it solidifies within 5 seconds. The glue can reach walking strength within 1 minute; (2) It is not very sensitive to humidity a
In recent years, polyurethane resins have made their composites stand out due to their good toughness, fast curing speed, and no styrene smoke. With people's mastery of polyurethane molding technology and progress in controlling its reactivity to extend its service life, polyurethane has long entere
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 s
The electric super-capacity sprayer is popular with more and more vegetable farmers because of its convenient use and high work efficiency. It has become the main tool for pest control in the greenhouse. However, electric sprayers are relatively "precious". Once they are improperly operated and main
