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The components of silica gel thin layer chromatography are connected as a horizontal line

by:Kenna     2021-05-04
The components of silica gel thin-layer chromatography are connected into a horizontal line. These advantages are irreplaceable by other materials such as PVC. They have different shapes, different materials, or cold resistance, heat resistance, foaming, solid body, and special properties, etc. The required products can meet the needs of design and use. Automobile sealing strip production process 1. Extrusion of rubber sealing strips for automobiles is extruded by a cold feed extruder. The extruder head has a single head and a composite (double composite) And multi-composite) head and shearing head, among them, the screw length to diameter ratio of the microwave vulcanizing extruder is generally 16, and the screw length to diameter ratio of the shearing head vulcanizing extruder is greater than 20. Introduction to electrical cabinet door self-adhesive sealing strips are made of three types of self-adhesive sealing strips with good elasticity and resistance to compression deformation, resistance to aging, ozone, and chemical effects, and a wide operating temperature range (-40°C to +120°C). Ethylene propylene rubber (EPDM) rubber is foamed and densely compounded. It contains unique metal clamps and tongue buckles, which is strong and durable. It plays a key role in various electrical cabinets. The components of the silica gel thin layer chromatography are connected into a horizontal line. The heat resistance, cold resistance, insulation, conductivity, and flame retardancy are all very good. It can be used at 100-120℃ for a long time, and it can be used at 140-150. It can also maintain effective physical properties for a long period of time at ℃, and can withstand high temperatures of 230-260 ℃ in a short time, which can delay the effect of sudden accidents in urban buildings; plus the use of special formulas, three yuan Ethylene-propylene rubber has a similar feel at -50°C to 150°C, which creates a high-efficiency work performance for installation on the production site. The lip length and thickness should be appropriate. Too thick or too long will increase the resistance of the glass to lift. Too thin or too short will cause the glass to not be well guided and sealed, resulting in vibration, noise, and rain leakage; the second is The shape and size of the bottom of the section are designed. There are protrusions on the section of the window steel channel, which is used to assemble the guide groove. Therefore, the bottom of the guide groove section should be designed with a corresponding structure, which is easy to install and can utilize the elasticity of the sealing strip itself. It is attached to the steel guide groove to prevent it from coming out; it is the shape and size of the outer edge. In order to improve the appearance, the outer surface of the guide groove should be closely attached to the body. The skeleton sealing strip is co-extruded from dense rubber, foam rubber and steel wire/steel sheet. Also known as EPDM sealing strip (EPDM)-suitable for the special environment of -40℃ -+160℃, it has superior anti-ozone characteristics, anti-ultraviolet characteristics, resistance to chemical solvents, and various physical and chemical performance indicators far exceed Similar products. The components of silica gel thin-layer chromatography are connected into a horizontal line. For this reason, the GB12002-89 'Sealing Strips for Plastic Doors and Windows' was formulated very early to standardize the production and inspection of sealing strips. However, doors and windows are currently on the building materials market. The quality and price of rubber-plastic sealing strips are very confusing. Four-composite sealing strips-our company takes the lead in developing and producing composite sealing strips composed of 4 kinds of rubber materials in China. Covered with a thin protective layer of glue, thereby further improving the service life of the seal. 3. Among them, the weather sealing strip has a hollow sponge tube, which has a good temperature and humidity maintenance function. The commonly used weather sealing strips include door frame sealing strips, trunk sealing strips, engine box cover strips, etc., and common general sealing strips have front and back Windshield sealing strips and corner window sealing strips, inner and outer strips, etc., 4, 5, according to material types, can be divided into rubber sealing strips; plastic sealing strips; thermoplastic elastomer sealing strips, special function classification, some sealing strips have electronic Intelligent functions, such as anti-pinch seals, etc. Among them, metal-rubber composite sealing strips account for more than 60%. For rubber sealing strips, the cross-sectional design is very important. The first is the shape and size of the sealing lip. The sealing lips on both sides should be removed from the car with the same and appropriate force. The two sides of the window glass touch the glass. 3) It has an independent open-cell bubble structure. The appearance of the special-made joint board is a honeycomb-shaped hole evenly distributed. It can be tightly bonded with cement/sealant without being roughened, and it can adapt to natural expansion The shrinkage changes and changes to enhance the sealing, expansion, and water stop effect of the joint. It is widely used in the fields of box sealing and building sealing. The cold resistance, heat resistance, foaming, solid, and special properties of different application fields developed and designed by our company can meet the application needs. Installation method of inlaid wooden door sealing strip :Because the width of the saw blade or grooving knife used by each manufacturer when grooving is different, there are usually 4mm, 3mm, 2.5mm, 2.0mm, and most of them are 3mm, which is used in the purchase of seals. Be optimistic about the article. The components of the silica gel thin layer chromatography are connected into a horizontal line. The length and thickness of the lip should be appropriate. Too thick or too long will make the glass lifting resistance too large, and too thin or too short will cause the glass to not be well guided and sealed. , Causing vibration, noise, and rain leakage; secondly, the shape and size design of the bottom of the section. There are protrusions on the section of the window steel channel, and its function is to assemble the guide groove
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