Jialibao 704 silicone adhesive room temperature curing sealing insulation adhesive for electronic and electrical maintenance

Description :

  Jialibao 704 silicone adhesive is a single component room temperature vulcanized silicone rubber designed specifically for the bonding, sealing, and insulation needs of the electronic and electrical industry. It solves the problems of slow curing and poor temperature resistance of traditional adhesives under complex working conditions, and is suitable for fixing precision components that require long-term stability. This 704 silicone adhesive can absorb moisture from the air and solidify at room temperature, forming a silicone rubber elastomer with excellent elasticity and weather resistance. The typical working temperature range covers -60 ℃ to 200 ℃, making it an ideal choice for electronic component encapsulation, coil fixation, and sensor packaging.

  The core specifications of Jialibao 704 silicone adhesive are reflected in its physical and chemical properties. After curing, the tensile strength is usually greater than 1.5 MPa, and the elongation at break exceeds 300%, ensuring that it does not detach under vibration environment. The dielectric strength is higher than 20kV/mm, and the volume resistivity is greater than 1 × 10 ^ 14 Ω· cm, providing reliable electrical insulation protection. The implementation standard refers to relevant specifications of organic silicone sealant such as GB/T 24267-2009, and has passed RoHS environmental certification. The surface drying time is about 30 minutes, and the complete curing depth varies with humidity. It can usually cure to a depth of 2-4mm in 24 hours, which is suitable for most common 704 silicone adhesive construction scenarios with adhesive thickness.

  When selecting Jialibao 704 silicone adhesive, it is necessary to clarify that it is suitable for bonding various substrates such as metal, plastic, glass, ceramics, etc., especially for fixing PCB board components, high-voltage package insulation sealing and other scenarios. If rapid curing or structural high-strength bonding is required, modified silane or epoxy resin products should be selected instead of this 704 silicone adhesive. For extreme chemical environments that require fuel resistance and strong acid and alkali resistance, fluorosilicone rubber is more suitable. The purchaser should confirm that the relative humidity of the construction environment is not less than 40% to ensure the normal cross-linking and curing of 704 silicone adhesive, and to avoid surface sticking or non curing phenomena.

  Before using Jialibao 704 silicone adhesive, be sure to clean the surface of the substrate, remove oil stains, dust, and oxide layers, and use cleaning agents if necessary. After applying glue, it should be kept still to avoid moving parts until the surface is dry. In daily maintenance, check whether there are signs of cracking or delamination in the cured adhesive layer, especially after high and low temperature cycling tests. Common faults such as incomplete curing are often caused by excessively dry environments or thick adhesive layers. They can be resolved by increasing humidity or applying adhesive layer by layer. Unused 704 silicone adhesive should be immediately sealed at the pipe mouth to prevent residual adhesive from absorbing moisture and solidifying inside the pipe, and stored in a cool and dry place.

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