Teach you to identify high quality and poor quality sealant
ã€China Aluminum Network】 door and window seal is an important part of the door and window fittings hardware can not be ignored, judging the seal of the door and window is based on its sealing effect, a good quality door and window seals will not easily fall off, and can To a good sealing effect, there are moisture-proof, noise isolation and wind and heat and other functions.
Some door and window seals in the market are generally made of PVC material, which is a material that has been eliminated, because the material itself is not environmentally friendly, and easy to aging. Nowadays, EPDM rubber is popular, which requires the addition of plasticizers (dioctyl phthalate, dibutyl ester, but the market price is higher)—it is directly related to the quality of door and window seals. The good or bad is because so many manufacturers use cheap waste oil (waste oil, oil refinery remaining oil base, etc.), to replace the plasticizer inside, giving users a lot of hidden dangers.
Pay attention to the following aspects when choosing door and window seals.
1. Use the nose to smell if there is any odor. The normal PVC material has a little bit of mellow taste. It is very small and hardly smells.
2. In the summer, if the contact surface of the door and window sealing strip and the profile is stained and discolored, the oil will leak yellow.
3, see the proportion. The same amount of door and window seals should be lighter, and the inferior products should always have a smaller proportion, and vice versa. Regular manufacturers generally use a small proportion of light calcium carbonate as a filler, and some manufacturers use talc, heavy calcium to increase the proportion of products. Because sales are based on weight.
Bad door and window seals
Although the proportion of door and window seals is relatively small, the role can not be ignored. Insufficient door and window weatherstrips are not only environmentally friendly, but also contain odors that can harm your body and pollute the air.
1, not environmental protection, smell, pollute the air.
2, reduce the sealing. Poor quality sealants contain inferior plasticizers or substitutes, which tend to age and harden and shrink in the winter. Gap between the glass and the profile causes water leakage and dust leakage. Many users often find that the red liquid is flowing out from the bead of the plastic window in the rainy season. This is caused by the corrosion of the steel lining between the window glass and the sealant, which not only greatly reduces the aesthetics of the plastic window, but also greatly affects the life of the doors and windows.
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