Industrial adhesive manufacturer epoxy resin structural adhesive 123
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Epoxy resin structural adhesive can cure at room temperature without the need for heating or pressure. However, heating can accelerate its curing. Today, I will introduce the uses of epoxy resin structural adhesive for your reference. Epoxy resin structural adhesive has high bonding strength, and the bonded joints can withstand large loads. Not only is the bonding strength of the bonded joints high, but the uneven tensile strength is also high, so the joints can withstand various loads such as impact, vibration, and fatigue. In addition, these adhesives must have a certain degree of heat resistance and weather resistance, allowing the bonded structural components to work in harsh environments.
Epoxy resin structural adhesive is a solvent-free, liquid epoxy resin adhesive that can be cured at room temperature or heating. After solidification, the bonding layer has a moderate hardness and can withstand extremely strong impacts and vibrations. The bonding layer has good mechanical properties, good electrical insulation, and can withstand temperature fluctuations and flexural peel stress.
Non corrosive, with good adhesion, temperature resistance, and oil resistance to metals, ceramics, vulcanized rubber, glass fiber products, and carbon fiber products. Epoxy resin structural adhesive has greater advantages in connecting structural components than traditional riveting, screwing, and welding. The use of synthetic adhesives for load-bearing structural components began around the 1940s. At that time, due to the needs of modern industry, especially aviation and other military industries, the synthetic polymer industry was in an emerging period, so structural adhesives developed rapidly. Epoxy structural adhesive is one of the very important varieties.
According to the different types of strength, it is divided into three levels: the first level is used for bonding the main load-bearing structure, which is a structural adhesive; Secondary adhesive is used for bonding secondary load-bearing structures and is a quasi structural adhesive; There is no requirement for peel strength at level three, and it should be classified as a non structural adhesive. There is no national standard for the definition and classification of structural adhesives in China. Generally, structural adhesives are divided into two categories based on the stress situation and bonding strength of the bonding object: high strength, high toughness, and medium strength, medium toughness. The shear strength of the steel used for the main load-bearing structure adhesive is ≥ 25MPa, the tensile strength is ≥ 33MPa, and the uneven tensile strength is ≥ 40kN/m. The shear strength of the adhesive used in the secondary stress structure is 17-25Mpa, and the uneven pulling strength is 20-50kN/m.
According to the curing temperature, epoxy resin structural adhesives can be divided into four categories: high temperature curing, medium temperature curing, room temperature curing, and low temperature curing. High temperature curing epoxy resin structural adhesives have high temperature, toughness, heat resistance, and are mostly used for bonding main load-bearing structures; Medium temperature cured epoxy resin structural adhesive is mainly developed to meet the needs of the aircraft industry. Due to the tendency of grain boundary corrosion in aluminum alloys starting above 120 ℃ and intensifying with increasing temperature, the strength and toughness of green alloys will decrease after grain boundary corrosion. Therefore, it is required that the curing conditions of the adhesive used to bond aluminum alloys should not exceed 130 ℃/4h; The application of room temperature cured epoxy resin structural adhesive is more widespread.
The application in the field of civil engineering and construction is more important, and it is one of the main varieties of building structural adhesives; Low temperature curing epoxy resin structural adhesive is a new type of adhesive developed in recent years to meet the needs of low-temperature construction in winter. It can be applied and cured at 0 ℃ or even below -10 ℃. If you want to learn more about AB glue, quick drying glue and other related information, please visit our company’s official website for inquiries.
Industrial adhesive manufacturer epoxy resin structural adhesive 123
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