The liquid silica gel manufacturer tells you the reason why the silicone rubber sealing strip is not good for installing the plastic steel door and window frame

Because window of model steel door has anticorrosive energy saving, sealing sound insulation, adornment sex is strong wait for a lot of advantages, get popular love. In promoting application, consumer people often ignored the function of hardware fittings and action. Want to reflect model steel door window watertight, airtight, sound insulation, heat preservation 4 great performance adequately, divide outside needing plastic profile of superior quality, still need hardware fittings and those who seal cooperate. In terms of installation quality requirements, the contact between the silicone rubber sealing strip and the glass and notch should be smooth, without edging, grooving and odorless rubber strip. When doors and Windows are closed, there is no obvious gap between the fan and the frame, and the sealing strip on the sealing surface should be in compression state. Use sealant to close the gap around the frame of the plastic steel door window, is a line of defense to prevent the leakage of doors and Windows. The sealant is injected at the negative corner, which can ensure the thickness and width of the sealant, and will not cause pollution. Clean the surface before injection and check whether the injection is continuous after injection to prevent leakage.

In some projects, the installation personnel embed the plastic film wrapped by the plastic steel door and window frame into the hole intact, so that the sealing effect is not good. The reason is:

(1) The frame outside the plastic steel door and the hole will produce isolation, although the sealant is still easy to leak;

② For groove shaped profiles, it is not easy to embed. In particular, the lower corner on both sides and the bottom of the window frame are filled outside and empty inside. These parts are places where rain is concentrated, and tend to produce water and Yin water.

(3) After painting, use a blade to cut the plastic film, which is easy to cause damage to the surface of the window frame. Pulling by hand will cause the paint layer and the window frame to separate, leaving hidden dangers. After window of model steel door is installed, should do splash water test, in order to examine the actual result of window of model steel door.

At the same time, some special structure of silicone rubber strip, but also has excellent oil resistance, solvent resistance, radiation resistance and high and low temperature performance and other characteristics. Silicone seal factory tell you silicone rubber has excellent thermal stability, within 60-260 ℃, can not only maintain flexibility, resilience, and surface hardness, mechanical properties have no obvious changes, but also can resist heat aging for a long period of time, and it has excellent electrical insulation, weather resistance, ozone resistance and permeability, and non-toxic tasteless.