Now let's take a look at what matters need to be paid attention to when installing this door and window sealing strip. When we install this door and window sealing strip, we must first pay attention to if it is glass installation, we should place the glass in the In the middle, when we install the door and window seals, it is very likely that the doors and windows will be very loose. When we install the glass, we must carefully clean up the swag on the glass. Then the second point is that if the gap between our rubber skin and glass is uneven, it will also produce this phenomenon, that is, the sealing strip is easy to slip off. At present, in order to reduce friction, automobile sealing strips (such as glass guide grooves) The surface of the sealing strip) is mostly flocked, and the trend is to cover a thin low-friction layer on the surface of the thermoplastic EPDM automobile sealing strip. The low friction layer is co-extruded with thermoplastic EP-DM and adhered to the surface of the weatherstrip. The properties of several low friction materials are shown in the table below. As can be seen from the table, Lurebruer MT-80, Sarlink GRC-03 and Sarlink GRC-04 are thermoplastic materials with small friction coefficient, among which Lumbmer MT-80 has the comprehensive performance
Features of plastic-steel door and window sealing strips: enhanced wind pressure resistance, without affecting the push-pull and aesthetics, long life, anti-push and anti-wear, water repellency, anti-aging, the air permeability of doors and windows made of it can reach the highest level standard. Can be used in homes, hotels, hospitals, etc. The main functions of plastic-steel door and window sealing strips: ① In winter, there is no cold wind in the room, and the heat preservation is good, and the room temperature is increased by 3-5 degrees. In spring, especially in the season of suffering from sand and dust storms, the room is clean and hygienic without sand entering the room. In summer, there is no hot air flow into the room, and the air conditioning adjusts electricity by 20-30% to achieve energy saving and efficiency. ②The sound insulation effect of the four seasons is remarkable, the noise is reduced by 15-25 decibels, and you can enjoy a quiet room. Although the proportion of plastic steel door and window sealing strip is small, its role should not be underestimated. Door and window sealing strips are divided into three categories: glass sealing strips (adhesive strips), door leaf and door cover sealing strips and wool strips. Glass sealing strips are used for sealing between glass, fan and frame. The seal between the door panel and the door frame, the top is mainly used for the seal between the frame and the fan. In the production and installation of plastic steel doors and windows, broken bridge aluminum doors and windows, and wooden doors, sealing strips are an indispensable accessory. Automobile rubber seal strip is one of the important parts of automobiles, widely used in doors, windows, body, seats, sunroofs, engine cases and trunks.
The first is the structural design of doors and windows, which not only needs to meet the functions of the building, but also must combine the performance of doors and windows. Starting from the beauty of the whole house, and then considering factors such as compressive resistance, wind resistance, water resistance, air tightness and thermal insulation, the door and window seals completely determine the various properties of doors and windows, but at the same time it is also one of the most important parts of doors and windows. *It is easy to wear and tear, so you should take good care of them and use certain skills during installation, which can greatly reduce the probability of deformation and improve the airtight performance. The cost of small sealing strips We have all eaten dried noodles, a pack of 500 grams, 1000 grams, and a large package of 2000 grams. If you can't eat it all at once, it will be damp in the kitchen, affecting the taste, and even moldy and broken, causing waste. Plastic steel doors and windows have become a new generation of door and window products. It has good corrosion resistance, weather resistance, and good thermal insulation and sound insulation effects, so it is welcomed by consumers. Plastic steel doors and windows generally use sealing strips, which not only have good water resistance, but also look beautiful in appearance. The following is a brief introduction to the product. The material of plastic-steel door and window sealing strips is generally PVC-modified, and the plasticizer added to it plays a key role. At present, the relatively stable plasticizers include dioctyl phosphophthalate and dibutyl phthalate, but the market price is relatively high. high. The main function of the plastic steel door and window sealing strip is to eliminate the problem of air leakage and ash entering. On the basis of the original doors and windows, it does not change or destroy the structure of the original sliding window, and replaces the original old sealing strip with a new type of sealing strip.
Fluorine rubber extrusion performance introduction
Fluorine rubber extrusion products: various fluorine rubber strips, fluorine rubber tubes and various fluorine rubber special-shaped strips, the diameter of which ranges from 1 to 80mm; and our company also has the bonding technology for large-scale fluorine rubber products;
Our company's fluorine rubber material has chemical resistance, resistance to most oils and solvents (except ketones and esters), weather resistance and ozone resistance; Special formula can withstand low temperature to -40 ℃. At present, the main supporting manufacturers of this product are pharmaceutical equipment factory, chemical equipment factory, pneumatic equipment factory, water pump oil pump factory, hydraulic cylinder factory, vehicle brake valve factory, automobile air conditioner factory, automobile engine factory, locomotive engine factory, diesel engine factory, Electronic products factory, hardware pipe products factory, etc. The company's products are of good quality, excellent performance and affordable prices. Focusing on supporting major manufacturers, it is an ideal supplier for most manufacturers of seals. Now it has won the recognition of many customers in Europe, America, Japan and China.
Fluorine rubber—>Performance introduction:
(Fluoro Carbon Rubber) There are various types of rubber containing fluorine in the molecule, depending on the fluorine content (ie monomer structure). The currently widely used hexafluorinated fluororubber was first listed by DuPont under the trade name "Viton". High temperature resistance is better than silicone rubber, some chemical resistance, resistance to most oils and solvents (except ketones, esters), weather resistance and ozone resistance; cold resistance is poor, the general operating temperature range is -20~250 °C. Special formula can withstand low temperature to -40 ℃
3. Product use:
The main purpose:
It is used for the sealing of automobile and aircraft engines, the sealing of engine power output bearings, the sealing of engine valve stems, the sealing of cylinder liner, and the sealing of clutches.
Air filter seals, fuel pump seals and the inner layer of fuel hoses, fluororubber seals are also the only ones that can be used in high-altitude conditions, fluororubber
Adhesive has a wide range of applications in the aerospace field, Viton GLT has a wider operating temperature range, and some are resistant to HTS type mineral oil corrosion.
performance, commonly used in the aerospace field. Viton ETP has a wider range of chemical resistance and is commonly used in the chemical industry.
Fluorine rubber pad parameter performance
PTFE sheet is made of pure PTFE through various processes such as molding, turning, cutting, etc. It has excellent chemical corrosion resistance among known plastics, no aging, electrical insulation, And has a very low coefficient of friction, in the case of no load, can be used in the temperature of -180 ~ +260 degrees. It is suitable for sealing materials such as flat gaskets, V-shaped gaskets and lining materials, lubricating materials such as piston rings and guide rails, electrical insulating materials, and anti-sticking materials.
PTFE sheet (also called PTFE sheet, Teflon sheet, Teflon sheet) is divided into two types: molding and turning. Made by cooling. The PTFE turning plate is made of PTFE resin through compaction, sintering and rotary cutting. Its products are widely used and have excellent comprehensive properties: high and low temperature resistance (-192℃-260℃), corrosion resistance (strong acid, strong alkali, aqua regia, etc.), weather resistance, high insulation, high lubrication, non-adhesion, ** harmful and other excellent characteristics. Flexible graphite sheet has high temperature resistance, corrosion resistance, radiation resistance, low creep relaxation rate, and excellent flexibility.
High-quality flake graphite is chemically treated and rolled at high temperature. It is the basic material for the manufacture of various graphite composite plates, graphite strips, fillers, sealing gaskets, etc.
Detailed description of the advantages and disadvantages of silicone rubber foam strips and EPDM rubber foam strips
First of all, we have to say that the silicone rubber foam strip belongs to the extruded silicone type. Because the shape resembles a sponge, it is called a foamed silicone strip, or a sponge silicone strip. The characteristics of the silicone rubber foam strip: 1. The sealing performance of the silicone material Good, high temperature and weather resistance, anti-aging and anti-strike, shock-proof and waterproof, can fit all kinds of smooth surface materials 2, can be self-adhesive with tape on the back, better sealing, high-temperature-resistant glue will not fall off after long-term use. Environmental protection and safety, good insulation, high temperature resistance, small compression set, strong resilience, non-toxic.
3. Foamed silicone rubber is evenly foamed, with a density of 0.25-0.85g/cm3 and a Shore hardness of 8-30A. Environmentally friendly, non-toxic, odorless, good resilience, good flexibility, no bubbles and no pores on the surface. High strength, long service life, product insulation and environmental protection, high and low temperature resistance, compression resistance, acid and alkali resistance, anti-aging, anti-ultraviolet.
4, the surface is smooth, the foam density is uniform 5, the good surface is not sticky. Good air permeability 6, using high-quality silicone raw materials, and after strict testing, in line with environmental standards. 7,. High temperature resistance: -70 degrees -300 degrees 8,. Heat resistance: Silicone rubber has much better heat resistance than ordinary rubber, and can be used almost forever at 150 degrees without performance changes; it can be used at 200 degrees It can be used continuously for 10,000 hours; it can also be used for a period of time at 350 degrees.
5. Weather resistance: ordinary rubber is rapidly degraded under the action of ozone generated by corona discharge, while silicone rubber is not affected by ozone. And for a long time under ultraviolet and other climatic conditions, its physical properties only change slightly. 10. Anti-aging and corrosion resistance, the silicone itself has a strong inert silicone rubber foam strip.
Divided into EPDM foam sealing strip, silicone foam sealing strip, PU foam sealing strip. The foam sealing strip is formed by microwave vulcanization process at one time, the surface is smooth and beautiful, and there is no joint. It has good elasticity and compression deformation resistance, and has excellent aging resistance. Excellent flame retardant properties. It is used for supporting electrical appliances with low smoke and low toxicity; product performance is stable in buildings (large slab caulking material for residential use, door and window sealing material for residential use, concrete anti-shrinkage...
Then we want to talk about the characteristics and advantages of EPDM rubber foam strips. First of all, the characteristics: using EPDM as raw material, the surface is smooth and delicate, the resilience is good, the foam is uniform, the waterproof performance is excellent, the ozone resistance, aging resistance, and solvent resistance are all good. . EPDM/rubber-plastic/foaming series products: 1. Polyethylene open-cell foamed rubber expansion joint board (caulking board. caulking board).
1. Product characteristics of EPDM rubber foam strips: 1. Light bulk density, high tensile strength, and no water absorption (replacement of traditional three-oil four-felt, asphalt wood fir board and other materials). The product is environmentally friendly, easy to construct, anti-seepage, anti-leakage, and has a good water-stop effect.
2.Corrosion resistance, aging resistance, high and low temperature resistance +80℃~-45℃, no flow, no deformation, no embrittlement, long service life.
3. It has an independent open-cell bubble structure. The appearance of the special joint board is a honeycomb-shaped hole evenly distributed. It can be tightly bonded and integrated with cement/sealant without roughening. It adapts to changes in natural expansion and contraction and enhances joint sealing. Swelling water stop effect. (2) The application range of EPDM rubber foam strip products can be widely used in machinery, doors and windows, curtain walls, rivers, dams, ports, wharfs, underground wells, water conservancy and electricity, airports, bridges and other concrete water-stop joint projects. (3) Product use method During construction, this product can be used in a variety of ways according to the situation. Longitudinal water-stop joints, horizontal water-stop joints and other special joints are used.
For the sealing strips used on ships, many customers are very puzzled, what kind of sealing strips should be selected?
There are many factors to be considered in the use of ships. Ships often sail in seawater, and seawater is corrosive to a certain extent.
Many of them use fluororubber sealing strips. Fluororubber has several characteristics, such as corrosion resistance, high temperature resistance, and aging resistance.but the cost is relatively high. Now there is a material that can meet this requirement, that is, EPDM rubber strips.
English abbreviation EPDM strip, this material is corrosion-resistant, aging-resistant, light in weight, and the most important thing is that the cost is much lower,
More and more customers choose this material.
This type of sealing strip is mainly made of EPDM rubber foam with good elasticity and resistance to compression deformation, aging resistance, ozone, chemical action, and a wide operating temperature range (-40℃~+120℃). It is made of dense compound and contains unique metal clamps and tongue buckles, which are durable and easy to install. Outer coating material: Vinyl (PVC), hardness: 85 Durometer (Shore A), EPDM rubber (including dicyclopentadiene) (EPDM), hardness, 70 Durometer (Shore A)
characteristic:
1. EPDM has excellent weather resistance, weather resistance means that it has the ability to resist severe cold, heat, dryness and humidity for a long time, and has good corrosion resistance to the erosion of rain and snow water, which can completely extend the service life of the rubber strip. ;
2. Heat aging resistance refers to strong heat aging resistance. It can be used at 100-120 ℃ for a long time, and can also maintain effective physical properties for a long period of time at 140-150 ℃, and can withstand high temperature of 230-260 ℃ in a short time. To delay effect; plus the use of special formula, EPDM rubber feels similar at -50 ℃ to 150 ℃, which creates efficient work performance for production site installation
3. Because EPDM has good ozone resistance, it is also known as "crack-free rubber", especially when it is used in various urban buildings with different atmospheric indices and completely exposed to the air, it will show its products. the superiority;
4. Anti-ultraviolet radiation provides environmental protection for high-rise building residents; it can withstand 60~150KV voltage, and is also excellent in corona resistance, electric crack resistance and arc resistance. Low temperature elasticity, the temperature when the tensile capacity reaches 100MPa is -58.8℃.
5. Due to its excellent physical and mechanical properties, it is often used in the manufacture of sealed parts for aircraft, cars, trains, passenger cars, ships, high and low pressure switch cabinets, glass curtain walls, aluminum alloy thermal insulation windows, diving products, and high-pressure steam hoses. , tunnels, viaduct joints and other waterproof parts and other industrial and agricultural sealing parts.