Take you to know the sealing strip and sound insulation detection
[China Glass Net] The quality of sealing strips for doors and windows is one of the important factors affecting the quality of doors and windows. It needs to have the important functions of waterproofing, sealing and energy saving. It has the functions of sound insulation, dustproof, antifreeze and warmth, and also has strong pulling. Stretch strength, good elasticity, and better need of temperature resistance and aging resistance. How should we distinguish the various types of sealing strips on the market? Combustion method (can distinguish between hot rubber body and rubber strip) A. The rubber strip is ash after burning and cannot be drawn. The ash is white, and the silicone rubber which is still white after being rubbed on the white paper; the ash is black, and the aluminum is rubbed on the white paper, and the black is EPDM or chloroprene rubber. The ash is black, and the natural rubber is touched by hand when it is pressed. B. After the thermoplastic elastomer strip is burned, it can be drawn into a filament at the extinction place, wherein EVA (ethylene-vinyl acetate copolymer) has obvious acetic acid taste. PE (polyethylene) and P (polypropylene) have obvious burning characteristics of candles, which are burned continuously and accompanied by melting and falling. The PVC (polyvinyl chloride) type rubber strip has the characteristics of being extinguished from fire and accompanied by black smoke and pungent odor. C.TPV thermoplastic vulcanizate: surface matt, with melt drawing phenomenon, floating in water or suspended in water. D.SEBS thermoplastic elastomer sealing strip: surface matt, with the phenomenon of melt drawing, slowly sinking in water. At present, the material of the sealing strip on the market is roughly the same, so how should we judge the sealing effect of the sealing strip? 1, measuring tension Relatively speaking, as a sealing strip material should have a certain tensile strength, standard requirements: strength ≥ 5Mpa. The higher the amount of glue in the same material, the better the tensile force. Generally speaking, the service life will be relatively longer and the sealing effect will be better. 2, smell smell I smelled it with my nose and smelled it. The normal PVC material has a bit of mellow smell and almost no smell. 3, high temperature detection Wrap the seal as tightly as possible on the profile and leave it at high temperatures 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. 4, observe the color Some of the cheaper seal fillers will be a lot, so the surface will not be very bright, those are cheap, the appearance is not bright is not desirable. The sealing performance of doors and windows depends mainly on the sealing strip. The performance and longevity of the sealing strip products are mainly due to the choice of materials. Therefore, it is recommended to buy high quality door and window sealant strips when purchasing! Zhi wins every window and every window, EPDM sealing strip is used for every door, the sealing effect is very good. Shoe Lining,Shoe Lining Leather,Laminated Leather Fabric,Leather Lining For Shoes WENZHOU JOVAN INTERNATIONAL COMMERCIAL , https://www.jovanleather.com