[Film Semi Thailand Sub Indo
Gildo Santiago
Flexible adhesives are available in a range of formulas, including elastomeric adhesives, MS polymer adhesives, and flexible cyanoacrylate adhesives with each designed to fulfil a specific range of functions in bonding applications where elasticity, pliability, and plasticity are important. Suitable for both gap-filling and sealing techniques, as well as strong adhesion between numerous substrates, flexible adhesive solutions provide excellent curing speeds and fixing times. Flexible adhesives are used in almost all industries where moving parts and components require non-mechanical bonding. They are also suitable for a broad range of substrate materials, while allowing for sag-resistant joints where aesthetics is an integral part of design. Additionally, where environmental and considerations must be taken into account, UV and weathering resistance come as standard in all of our products.
Choosing the ideal flexible adhesive for your application requires knowledge of the type of substrate to be bonded, alongside its use case and intended environmental conditions. Additionally, selecting the right product for automated and semi-automated processes will allow you to increase efficiency and cut costs, ensuring that your chosen product can easily be integrated into your manufacturing systems.
Many modern designs incorporate dissimilar materials. For this reason, a significant challenge is that, as temperatures change, each material contracts or expands differently. Large panels like those on opposite sides of vehicles and outdoor structures are examples of this. One side is warmed up in the morning while the other is warmed in the afternoon. Henkel flexible bonding products are designed to flex and accommodate this movement without imparting high stress on the structure.
Elastomeric adhesives deliver durability and elongation properties as well as displaying excellent energy absorption characteristics in areas where vibration is expected during operation. This means they are often used in applications where shock, vibration, and impact resistance are required. Additionally, they offer excellent thermal resistance and other environmental protection. Elastomeric joint sealants and elastomeric polyurethane sealants are commonly used for sealing, caulking, or glazing applications in the construction, rail, aviation, and automotive industries, while general elastomeric adhesives are used more broadly.
Among the best all round sealant adhesives on the market, MS polymer adhesives excel wherever elastic joining, and bonding is required. Odorless, neutral and free of isocyanates, it offers safe application, low shrinkage and low temperature curability, and UV resistance. Additionally, silyl modified polymers and SMP adhesives also offer solvent-free and isocyanate-free application. These hybrid products are also well suited to a broad range of industries and applications, providing an excellent all-purpose sealant and adhesive whatever your requirements.
Cyanoacrylate adhesives, or instant adhesives, are also available in flexible formulas. These flexible cyanoacrylate adhesives offer near instant bonding while retaining flexibility once cured and fixed. This allows fast joining of substrates such as metal, plastic, and rubber, with applications in the medical, automotive, and aerospace industries. It also allows smaller components to be sealed instantly when working with electronics or other time-sensitive applications.
Adaptable and versatile, flexible adhesives are used within a broad range of industries for a variety of applications in the automotive, construction, and assembly fields. Multipurpose formulas are used within automotive and industries where the assembly of components requires tight seals and reliable performance, while non-toxic formulas are useful in industries where food, medicines, or other sensitive products are manufactured or distributed. For more information on the most common applications for flexible adhesives you can read the following sections concerning industrial applications.
Rail vehicles are required to operate outdoors in all weather and temperature conditions. The large size of the panels introduces stress due dimensional changes of one side being in shadow and the other in direct sunlight. A properly designed elastomeric joint can stretch and allow movement, while still structurally joining the two materials. In doing so, little stress is put into the structure, allowing it to be constructed out of lighter parts which reduces mass.
While there are many different applications for these materials, they can commonly be seen in window bonding, panel bonding, and bracket bonding. As designs move to optimize which material is best for individual parts, more dissimilar materials are being used. Flexible adhesives are excellent materials for such applications.
Elastomeric Adhesives are excellent for aerospace interior bonding since they work well with dissimilar materials. Their elastomeric nature also makes them inherently impact resistant, an important attribute for aircraft interiors where panels are bumped and the entire interior system is subject to continuous vibration in service.
Current trends in appliance manufacturing are towards the use of glass to give a uniform appearance. Where tempered glass has been used for several years in cooktops and oven doors bonded with high performance two-component silicones, glass is now finding its way into refrigerator and freezer door bonding, dishwasher door bonding, and laundry lid assembly. Elastomeric adhesives are ideally suited to connect this glass to aluminum, powder coated steel, stainless steel, and plastic frames.
Elastomeric adhesives have several processing advantages. As flowable liquids in their uncured state, dispensing is easy to achieved through robotic automation which helps reduce costs. One product can also be applied to several locations to bond and seal a given device, resulting in a reduction of direct materials by eliminating mechanical fastener and preformed gasket SKUs.
The appearance and performance of appliance are the most important features for consumers. Bonding glass, as opposed to attaching it with screws and clips, allows for a clean finish to the final product. Elastomeric adhesives are flexible in their cured state which gives them the advantage of absorbing and distributing stresses across a wide temperature range.
RoHs and safety sheets on all of our flexible adhesive and MS polymer adhesive products are available to download here. Detailed TDS and SDS sheets are also available on request should you require more detailed information.
Uses: used as a filler, extender, or weighting agent in products such as paints, plastics, and rubber; some specific applications include use in automobile brake and clutch pads, automobile paint primer for metal protection and gloss, used as a weighting agent in rubber, and in cement jackets around underwater petroleum pipelines; in the metal-casting industry, molds are often coated with barium sulfate to prevent the molten metal from bonding with the mold; because barite significantly blocks x-ray and gamma-ray emissions, it is used as aggregate in high-density concrete for radiation shielding around x-ray units in hospitals, nuclear power plants, and university nuclear research facilities; ultrapure barite is used as a contrast medium in x-ray and computed tomography examinations of the gastrointestinal tract
Substitutes: In the drilling mud market, alternatives to barite include celestite, ilmenite, iron ore, and synthetic hematite that is manufactured in Germany. None of these substitutes, however, has had a major impact on the barite drilling mud industry.
Uses: metal processing; steel and iron production; catalyst; semiconductor etching; electrical power distribution; pharmaceuticals; high-quality camera and telescope lenses; seals and adhesives in engine components
World Resources: No known systematic assessment of either US or global resources has been conducted since the 1980s. Enormous quantities of fluorine are present in phosphate rock. Current US reserves of phosphate rock are estimated to be 1 billion tons, containing about 72 million tons of 100% fluorspar equivalent assuming an average fluorine content of 3.5% in the phosphate rock. World reserves of phosphate rock are estimated to be 70 billion tons, equivalent to about 5 billion tons of 100% fluorspar equivalent.
Substitutes: Fluorosilicic acid is used to produce aluminum fluoride (AlF3), but because of differing physical properties, AlF3 produced from fluorosilicic acid is not readily substituted for AlF3 produced from fluorspar. Fluorosilicic acid has been used to produce hydrofluoric acid, but this practice has not been widely adopted. However, the preferred product is currently aqueous hydrofluoric acid rather than fluorspar. Aluminum smelting dross, borax, calcium chloride, iron oxides, manganese ore, silica sand, and titanium dioxide have been used as substitutes for fluorspar fluxes.
Note(s): Hydrofluoric acid is the primary feedstock for the manufacture of virtually all fluorine-bearing chemicals and is also a key ingredient in the processing of aluminum and uranium. Fluorspar is also used in cement production, in enamels, as a flux in steelmaking, in glass manufacture, in iron and steel casting, and in welding rod coatings. A new mine in Canada that began operation in late 2017 reportedly sent its first shipment of 4,700 tons of fluorspar to the US. Another new mine in South Africa was under construction and production was expected to begin in early 2019.
Uses: The fertilizer industry uses about 85% of US potash, and the remainder is used for chemical and industrial applications. About 65% of the potash produced is potassium magnesium sulfate (K2Mg2(SO4)3) and potassium sulfate (K2SO4), which are required to fertilize certain chloride sensitive crops. Muriate of potash (KCl) accounted for the remaining 35% of production and is used for agricultural and chemical applications.
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