For electronic component potting, IC internal coating and optical instrument elastic bonding, material performance including light transmittance, stress level, temperature resistance and electrical insulation directly impacts long‑term device reliability. Two‑component addition‑cure phenyl silicone gel draws wide industrial attention for its balanced properties. Below are answers to frequently‑asked technical questions.

Q1: What are key points for mixing and handling this phenyl silicone gel?
A: It is supplied as Part A and Part B with 1:1 mixing ratio by weight. At 22℃, viscosity of Part A and Part B is 600±200 cp respectively, mixed viscosity remains 600±200 cp. Working life is up to 240 minutes, full cure takes 24 hours at 22 ℃. Vacuum degassing is recommended after mixing before application. Elevated‑temperature curing accelerates production cycle and improves substrate adhesion. Viscosity and curing schedule can be customized upon request.

Q2: What are key physical‑chemical properties after full curing?
A: Cured gel is transparent with light transmittance ≥93%. Hardness is 25±5 on Shore A00 scale, density 0.98 g/ml. Volume resistivity exceeds 1.0×10¹⁴ Ω·cm, offering excellent electrical insulation. Solvent‑free, no by‑products generated during cross‑linking, supporting deep‑section curing with low volatile content.

Q3: Can it withstand harsh working temperatures and environmental aging?
A: Continuous service temperature ranges from ‑59 ℃ to 200 ℃ with outstanding thermal stability. Cured gel maintains elasticity over broad temperature range. Low‑stress design minimizes mechanical damage to precision components and enables easy rework. It features moisture‑proofing, anti‑aging and long‑term yellowing‑resistance, suitable for long‑run optical and electronic applications.

Q4: Where is this material mainly applied?
A: Moisture‑proof protection for electronic components; internal coating for transistors and integrated circuits; elastic adhesive for optical instruments.

Q5: What critical precautions should operators follow?
A: ①Use mixed compound in one batch to avoid material waste and performance degradation. ②Prevent contamination from organic compounds containing nitrogen, phosphorus, sulfur and ionic compounds of tin, lead, mercury, arsenic. Such contaminants will cause incomplete curing. ③Seal unopened containers and store in cool shaded location.

Q6: What is the storage requirement?
A: Store in cool, ventilated and dry conditions with shelf‑life of 6 months. It is classified as non‑hazardous chemical.