Qi Family Classroom: Sealant Features and Usage
Accessories
Sealant Application Features:
Sealant is non-toxic, non-polluting, has good elasticity, mildew resistance, water resistance, chemical resistance, anti-aging, and its life span can reach more than 20 years. It is compatible with cement, mortar, gypsum board, steel, aluminum structure, glass, etc. Ceramics and other materials have good adhesion, glass and glass bonding, frame and frame body, glass and walls, automotive solar energy, shower room, aluminum alloy plate, steel plastic doors and windows sealed.
Matters needing attention: To remove surface floating sand dirt, to avoid rain, the construction temperature should be above 5 degrees Celsius, should be sealed in Celsius (5-25 degrees) environment, storage period of six months.
Instructions:
Clean the surface to be coated with a brush or a wet cloth to ensure that the construction surface is free of dust, oil, rust, etc.;
In order to obtain a good appearance, after the surface is clean, it can be taped on both sides of the seam, and then glued off;
Cut the mouth of the plastic bottle, put on the nozzle, and cut the nozzle obliquely according to the width of the gap;
After the rubber bottle is put into the glue gun, a layer of sealant is squeezed evenly at the sealing or bonding place to ensure that the glue and the substrate are fully wetted, and the dense and solid is continuous;
In order to make the surface beautiful, wet fingers can be wetted after applying glue and gently rubbed on the surface of the rubber material to make it smooth;
Before the sealant is dry film, it should avoid contact with the sealant such as rain and solvent. Before the sealant is cured, it can be removed with solvent (toluene, acetone, etc.). After curing, it must be scraped with a hard paper knife.
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The advantage of the plastic centrifuge tube is that it is transparent or translucent, its hardness is small, and the gradient can be taken out by the puncture method. The disadvantage is that it is easy to deform, has poor corrosion resistance to organic solvents, and has a short service life.
Plastic Centrifuge Tubes have caps, which are used to prevent sample leakage, especially when used for radioactive or highly corrosive samples. It is very important to prevent sample leakage; the tube cap also has a function to prevent sample volatilization. And support the centrifuge tube to prevent deformation of the centrifuge tube. When choosing this point, you should also pay attention to check whether the tube cover is tight, and whether it can be tightly covered during the test, so as to achieve the inversion without leakage;
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