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ADHESIVES & SEALANTS

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Structural silicone sealant

  • Author:lyrinsilicone.com
  • Origin:lyrinsilicone.com
  • Time of issue:2022-09-21 15:41
  • Views:0

Structural silicone sealant

(Summary description)structural adhesive

  • Categories:Adhesives & sealants
  • Author:lyrinsilicone.com
  • Origin:lyrinsilicone.com
  • Time of issue:2022-09-21 15:41
  • Views:0
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Structural adhesive refers to the adhesive with high strength (compressive strength>65MPa, steel steel positive tensile bonding strength>30MPa, shear strength>18MPa), which can withstand large loads, and is resistant to aging, fatigue, corrosion, and has stable performance within the expected life. It is applicable to the bonding of structural parts that bear strong strength.
◆ ◆ Use advantages of structural adhesive ◆ ◆
The structural adhesive has high strength, anti stripping, impact resistance and simple construction technology. It is used for bonding metal, ceramics, plastics, rubber, wood and other similar materials or different materials. It can partly replace the traditional connection forms such as welding, riveting and bolt connection. The stress distribution on the joint surface is uniform, and there is no thermal effect and deformation on the parts.
Structural adhesive is widely used in engineering, mainly for reinforcement, anchoring, bonding and repair of components; Such as sticking steel, sticking carbon fiber, planting reinforcement, crack reinforcement, sealing, hole repair, road nail pasting, surface protection, concrete bonding, etc.
◆ ◆ Performance advantages of structural adhesive ◆ ◆
1. Uniform stress distribution, high freedom of material selection
First of all, when using structural adhesive, the stress can be evenly distributed on the whole bonding surface, eliminating the stress concentration problem caused by traditional spot welding, riveting, bolt fixation, etc. Therefore, lighter and thinner materials can be used without loss of component strength. Secondly, it can effectively bond different materials and improve the comprehensive performance. Then, different materials can be made into laminated materials by bonding with structural adhesive, which can perfectly combine the strength and comprehensive performance of each material. At the same time, the toughness of structural adhesive can effectively solve the problem of inconsistent thermal expansion coefficient between different materials in application, such as the bonding application of aluminum and glass. Structural adhesive can also be used as isolation layer to reduce or even eliminate electrochemical corrosion between different metals.
2. Reduce surface defects and save repair costs
The components assembled with structural adhesive can maintain the integrity of the components and eliminate the surface defects caused by mechanical connection points and welding. The use of structural adhesive bonding can greatly improve the flexibility of process design and reduce the repair work. The structural adhesive can also provide the best fatigue performance, and the excellent toughness of the adhesive can allow the repeated stretching and recovery of parts under repeated stress. The energy absorption of the adhesive ensures the fatigue resistance of the bonded parts up to 20 times that of the welded or riveted parts. The integral continuous connection formed by bonding of assembly parts can ensure effective bonding and sealing under the working environment.
3. Cost reduction, environmental protection and efficiency
The selection of structural adhesive bonding can reduce the cost and simplify the production process. The use of bonding process can reduce the requirements for the base material, reduce the weight, eliminate drilling, welding, screw fixation and similar processes, and ultimately reduce costs and improve production efficiency. Only a small amount of training is required to operate, and no harmful solvent will be discharged when the structural adhesive is used to bond the primer or coated materials. Compared with the traditional connection method, structural adhesive shows outstanding advantages in cost, production efficiency, lightweight and performance. In most production applications, structural adhesives can provide components with higher strength and longer life.
◆ ◆ Main types of structural adhesive ◆ ◆
1. High performance silicone structural adhesive
High performance silicone structural adhesive is a kind of one component, neutral curing, specially designed for structural bonding assembly in building curtain walls. It can be easily extruded and used under wide temperature conditions, and can be cured into excellent, durable silicone rubber with high modulus and high elasticity depending on the moisture in the air.
2. Neutral transparent silicone structural adhesive
One component, neutral curing, specially designed for bonding and assembling of glass structures in building curtain walls. It can be easily squeezed out for use under wide temperature conditions. The silicone rubber with excellent, durable, high modulus and high elasticity is cured by the moisture in the air. Products do not need to use primer on glass, which can produce superior adhesion.
3. Building structural adhesive
Because of its excellent properties, building structural adhesives are widely used in construction and installation, decoration, sealing, structural adhesives and other fields.

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