Many people say that the water in the aluminum alloy doors and windows industry is too deep. When newly decorated owners choose aluminum alloy doors and windows99 of 100 will be cheated. Door and window model name pit you, glass type quality pit you, material pit you, installation pit you, in short, it is pit you did not discuss.
As a promising Popular Science Channel, Peng Ge's windows and doors science popularization will show you what sealing materials are and what their functions are. And what to pay attention to when purchasing and installing materials, and how to distinguish between good and bad.
Why is sealing material important
sealant strip, sealing wool tops, sealant three kinds are aluminum alloy doors and windows processing and installation accessories. Although they only account for a small part in the whole system of aluminum alloy doors and windows, they can greatly affect the sealing of doors and windows.
As the saying goes, details determine success or failure. This sentence is especially obvious in the products of aluminum alloy doors and windows. For example, when installing sealant for aluminum alloy doors and windows, a good sealant is equipped with an experienced installer. The glue can be formed at one time, which is not only beautiful, and there will be no leakage in the future.
But what if it is equipped with a poor glue? Even if you are given the best glue worker, the sealant will crack over time, and the rain will continue to get into the gap, disturbing your life.
Similarly, other door and window processing accessories will affect the air tightness and water tightness of doors and windows at the borders and gaps around the doors and windows.
Entry edition: understand the function of sealing materials
(1) sealant strip
sealing Strip is a material commonly used for sealing aluminum alloy flat doors and windows, also known as sealing strip. The main function is that when the doors and windows are closed, they are deformed by squeezing the rubber strip, which plays a sealing role and increases the air tightness and water tightness at the same time. The color of sealant strips is generally black, and different colors can also be made according to requirements to match doors and windows of different colors to make them coordinated.
Sealant strips are divided into vulcanized rubber and thermoplastic elastomer. Common products include:
vulcanized rubber: EPDM rubber, silicone rubber, neoprene rubber strip
thermoplastic elastomer: Thermoplastic vulcanizate, polyurethane thermoplastic elastomer, plastic PVC strip
the shapes of sealant strips are also divided into many, and different adhesive strips need to be adopted according to different parts and functional requirements of aluminum alloy doors and windows. For example d-shaped rubber strip is generally used for sealing between casement window doors and window frames; K-shaped rubber strip is generally used for sealing between glass and door and window frames.
(2) seal wool tops
sealing wool tops is a kind of sealing material used for sliding door windows. It is made of polypropylene (polypropylene) filament to make fluff, and the fluff is planted and fused on the bottom plate of polypropylene material. Install the wool tops on the sliding door window, and fill the gap between the door and window frame and the door and window to seal the wool tops.
At present, the sealing wool tops sold on the market can be divided into two categories: silicified wool tops and non-silicified wool tops, and can be divided into plus wool tops and non-plus wool tops according to the shape.
(3) sealant
sealant is mainly used between aluminum alloy doors and windows frame and wall, glass and aluminum alloy materials.
There are many kinds of sealant, but there are mainly two kinds of sealant applied between aluminum alloy door and window frame and wall, glass and aluminum alloy: neutral silicone sealant and neutral silicone structural adhesive:
the function of neutral silicone sealant is sealing and sealing and waterproof. Use position: seal between window frame and wall, seal between Profile and profile joint, seal between glass and profile.
Neutral silicone structural adhesive has stronger adhesion than sealant. Therefore, the use position is common in the junction between hidden frame glass panels of curtain wall, sunshine roof glass and large glass.
Advanced Edition: select the best sealing material as much as possible
sealing Materials and profiles, glass and hardware accessories belong to aluminum alloy door and window materials, but they are different. When choosing aluminum alloy profiles, glass and hardware accessories, we should not only consider our own differentiated needs, but also consider within the scope of economic capacity.
The sealing materials are different, and the comparison between good materials and poor materials is obvious (it may only take one or two years to feel the difference in using experience). But the price difference between the two is indeed affordable to everyone. Therefore, choose the best sealing material as much as possible!
(1) EPDM and silicone rubber strip are selected when sealing strip is selected
as mentioned above, the sealing strip has an important influence on the sealing effect of aluminum alloy doors and windows. The high-quality adhesive strip can be used for a long time without losing elasticity, and some can be equivalent to the service life of the outer window. However, inferior rubber strips will harden and lose elasticity within a few months, thus losing the sealing performance.
Commonly used aluminum alloy door and window rubber strip has three kinds of plastic PVC strips EPDM strip and silicone rubber strips. Plastic PVC strip PVC resin is the main raw material with a certain amount of plasticizer, so the aging time is fast.
However, EPDM strip and silicone rubber strips use EPDM rubber and silicone rubber as the main raw materials respectively. After processing, these two strips have excellent aging resistance and can be used for a long time. About 50 years. But because of the high price of these two kinds of rubber strips, many bad merchants do not choose to use them. For consumers, EPDM and silicone rubber strips are the most cost-effective rubber strips.
(2) wool tops must use siliconized wool tops, it is best to choose siliconized plus sheet wool tops
wool Tops silicification or not refers to whether the wool used in production is treated with silicone, and the wool tops treated with silicone is called silicified wool tops, which has certain water repellent ability, thus ensuring that the outer window meets water, the sealing ability can still be guaranteed and the service life is longer.
Silicide clip wool top is an upgraded version of the wool tops. By adding one polypropylene film to the middle of the wool tops during the production process, the plastic sheet can effectively block the air flow through the vertical wool, so that the sealing performance and water resistance of the wool tops are doubled.
(3) sealant cannot be used at will
sealant can withstand ultraviolet radiation from sunlight for a long time, so silicone sealant with good weather resistance and displacement capacity should be selected. Good sealant products have fine and uniform appearance, no bubbles and no gel.
At the same time, two things should be paid attention to when purchasing and using sealant. 1. There are different types of sealant. Different sealant uses are different and cannot be used at will. Second: sealant depends on the validity period when it is purchased. The performance of expired sealant will be much worse.
(4) the comparison between good materials and poor materials of sealing materials is obvious, and the price of good materials is affordable for everyone. Therefore, choose the best sealing material as much as possible!
