O que é selante?
The so-called sealant literally refers to a glue with a sealing function, but the sealant is not an ordinary glue, but a glue with a certain function.
Sealant is a chemical used for filling, sealing, bonding and coating, they are usually elastomers that conform to the shape of an object and maintain long-term durability. People use asphalt, natural resin, or synthetic resin, natural rubber or synthetic rubber as base materials, and then add some other special materials to make sealants, which play a very important role in the construction industry, transportation industry and electronics industry etc.
Quais são os tipos de selantes? Para que servem esses selantes?
According to the chemical composition of the basic material used for the sealant, the sealant can be divided into polysulfide, polyurethane, silicone, neoprene, butyl rubber, acrylic, etc.
At present, there are three types of organic silicone, polyurethane and polysulfide used in the market. More details pls check，
Sealant is widely used in industry. It can be seen in many places, such as sealing in aerospace, sealing of electronic products, transportation, solar energy; sealing of sanitary ware, caulking, decoration, etc. in construction, as well as pipes and fish tanks in daily life.
Here are a few common types of sealants and their uses:
- Selante de silicone: o selante de silicone é feito de um composto composto por siloxano e grupos orgânicos, podendo ser utilizado em ambientes de alta temperatura, baixa temperatura e alta umidade. Os selantes de silicone são comumente usados em motores automotivos, aeroespaciais, construção civil e tubulações de água, aquecedores de água, etc.
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Selante de poliuretano: PU sealant is composed of polyurethane groups, which can cure at ambient temperature and form a strong bond, in addition to having good UV resistance, oxidation resistance, water resistance and Weather resistance, can maintain elasticity and adhesion for a long time. Commonly used to join and seal building materials such as cement, glass, metal and wood.
- Selante de borracha butílica: Este selante é feito de borracha butílica e outros materiais para vedação, impermeabilização e impermeabilização, como telhados, paredes, pisos, recipientes, etc. Os selantes de borracha butílica têm boa resistência à oxidação, UV e química e são estáveis a diferentes temperaturas.
- Selante acrílico: Este selante é feito de acrílico e outros materiais e tem excelente aderência e durabilidade. Para vedação e colagem nas indústrias da construção civil, automotiva, moveleira e eletrônica. Os selantes acrílicos são altamente elásticos e adesivos, curando rapidamente à temperatura ambiente e formando uma vedação forte.
- Selante de polissulfeto: O selante de polissulfeto é um selante de alto desempenho comumente usado para vedar ambientes de alta temperatura e alta pressão, como sistemas hidráulicos, tubos e válvulas em aeronaves e automóveis.
- Poliéter modificado por silano (selante MS): O selante de poliéter modificado por silano também é chamado de selante poliéter modificado por silicone e selante de poliéter terminado por silano. Por não conter formaldeído e isocianato, possui excelentes características de proteção ambiental, como ausência de solventes, atóxico, inodoro e baixa liberação de VOC.
We need the use scene of the sealant to choose the type of sealant, because improper use will cause many problems that need attention. The sealant that plays a structural role on the curtain wall belongs to the silicone type. If polysulfide is used, the aging-resistant curtain wall glass will fall off. Prefabricated buildings use silane-modified polyethers.
Sealants are classified into single-component and two-component packaging according to the packaging method.
- A embalagem monocomponente consiste em misturar todas as matérias-primas que compõem o selante e selá-las em garrafas plásticas ou filmes de alumínio de embalagens macias. Use uma pistola de calafetagem para perfurar o produto para fora da embalagem.
- A embalagem de dois componentes é composta por dois componentes, A e B. Geralmente, o componente A é a borracha de base, e o componente B é o agente de cura. Cargas e outros aditivos são adicionados ao componente A e ao componente B, conforme necessário. Ao usar, equipamentos mecânicos especiais (máquina de mistura selante de dois componentes) devem ser usados para misturar os componentes A e B uniformemente de acordo com a proporção especificada. Os componentes são quimicamente reagidos e solidificados, e nem o componente A nem o componente B podem ser usados sozinhos.
Quais são os cenários de uso dos selantes?
Sealants are widely used in industries such as electronics, construction, ships, automobiles, photovoltaics, etc.
Under normal circumstances, people will use sealant in some occasions to fill holes and gaps. For example, in the kitchen, people will use sealant to seal the gap between the edges, so that the edges can be more closely integrated with the wall, and avoid the soaking of the wall by water stains in the kitchen. Secondly, in electronic appliances, the application of sealant is the most.
In addition, people also use sealant in some other occasions, for example, people use sealant between the door frame and the wall, so as to ensure that the door frame can be well fixed in the wall. However, the quality of sealants of different quality is good or bad. You should choose reliable sealant manufacturers, such as antas sealants, to focus on sealant and adhesive application solutions, It has a wide range of uses and can be applied to construction, home fit-out and retrofitting, new energy, solar photovoltaic module industry, shipbuilding, electronics, automobiles, high-speed rail and other industries.
In general, there are many types of sealants. The above list is a few common sealants and their uses. Different types of sealants have different characteristics and application scenarios. It is necessary to choose the appropriate sealant according to specific needs. if you are not sure which sealant to use, welcome to conact us, we are happy to hlep.
FAQ:
What is sealant used for?
Sealant refers to a sealing material that deforms with the shape of the sealing surface, is not easy to flow, and has a certain degree of adhesion. It is an adhesive used to fill the configuration gap and seal it.
Is sealant and silicone the same?
Sealant and silicone sealant are not the same, silicone sealant is one of a type of sealants.
