In our lives, seals are everywhere. Sealing strips on automotive glass, even thermos cups have seals. All kinds of sealing strips bring great convenience to our lives. There are many manufacturers and types of sealing strips on the market. The quality is also uneven, so how do we choose the seal? Today, take the door and window seals as an example to analyze the standard of the lower door and window seals. What are the methods to identify their quality? Sealing strip standard The key to doors and windows is sealing, sealing the seals plays a decisive role. The sealing material used in the market is generally modified by PVC. The key function in soft PVC is nothing more than the addition of plasticizer inside. With the rising price of various petrochemical products, the sealing strip The price of rubber products is also increasing. Some irresponsible manufacturers only look at short-term interests and start unfair competition from raw materials (so-called cutting corners, shoddy, using used motor oil, refining oil, and other oil bases instead of high-quality plasticizers). Consumers have brought a lot of hidden dangers. In the process of door making, the investment of seals accounts for a small proportion, but its role can not be ignored. The standard identification methods for door and window seals include the following: 1. Appearance of surface oil leaching occurs. Those waste oils are not compatible with PVC at all. The surface of the sealing strip is prone to oil and grease, and the surface of the profile is also stained with yellow. Not even environmentally friendly, there are many volatile substances that pollute the air. 2. When the so-called plasticizer volatilizes or oozes out, the sealing strip loses its original softness, becomes very hard, and quickly ages and shrinks, so that a part of the closed door and window has a large gap, and the airtightness changes. Very poor (water leakage, dust leakage), especially the steel lining inside the plastic steel doors and windows will be quickly corroded. Many users often find that many red liquids are dirty from the beading part inside the window during the rainy season, that is, the doors and windows are leaking steel lining. When it is corroded early, the life of doors and windows will be greatly reduced. In the actual production process, the investment in seals accounts for a small proportion, but its role can not be ignored. So you don't have to use fake and fake products to reduce the cost. The identification method is very simple. First, use the nose to smell if there is any smell, the normal PVC material will have a little bit of son's smell, almost not smelling. Second, wrap the sealing strip as tightly as possible on the profile and leave it at high temperature for a period of time (on the roof or in a sunny place). Check whether the contact surface between the surface of the profile and the sealing strip is stained and discolored. Whether the dust on the surface of the sealing strip is yellow (the oil is easy to absorb the soil) is oily, and it is dirty. Third, some of the cheaper seal fillers will be a lot, so the surface will not be very bright, those cheap and not bright is not desirable. Fourth, look at the proportion, how many meters per kilogram. There are many manufacturers who use their fillers in a big way. In order to pursue greater production, (saving a little electricity) using talcum powder, heavy calcium and other things as fillers, greatly increasing the proportion of sealing products, (we Users generally buy in kilograms and use them by length. This invisibly increases the cost and is not worth the loss. A heavy calcium seal is added and stretched back and forth several times by hand, and a small amount of white powder appears on the surface. Have you learned the above methods? So summing up is to look at the two touches and smells. First look at the surface of the oil, touch the softness of the seal, smell the seal has odor, whether there is weight and whether there will be white powder on the surface after pulling. Want our door and window seals to keep warm, dustproof, and seals must be selected. Editor in charge: Wang Zhen Here you can find the related products in NTC Temperature Sensor, we are professional manufacturer of Ntc Temperature Sensor,Thermistor Temperature Sensor,Ntc Temp Sensor,Ntc Thermistor Temperature Sensor. We focused on international export product development, production and sales. We have improved quality control processes of NTC Temperature sensor to ensure each export qualified product. Ntc Temperature Sensor,Thermistor Temperature Sensor,Ntc Temp Sensor,Ntc Thermistor Temperature Sensor Xi'an Gavin Electronic Technology Co., Ltd , https://www.gaimcmeas.com
If you want to know more about the products in NTC Temperature Sensor, please click the product details to view parameters, models, pictures, prices and other information about Ntc Temperature Sensor,Thermistor Temperature Sensor,Ntc Temp Sensor,Ntc Thermistor Temperature Sensor.
Whatever you are a group or individual, we will do our best to provide you with accurate and comprehensive message about NTC Temperature Sensor!