How IOTA Helps LED Packaging Enterprises Solve the Yellowing Issue

1. Title
LED Packaging Case Study: How IOTA silicone oil anhui co.,ltd. Helped a Client Achieve a 92% Light Transmittance Retention Rate After 1000 Hours of Aging?

2. Background & Challenges
[Client Background]

• Industry: LED Packaging Manufacturing
• Scale: Annual output value of approx. 300 million RMB
• Market: Exports to Europe and North America

[Core Pain Points]
In Q4 2025, the client encountered yellowing issues in the production of high-end LED encapsulants:

• Rapid light transmittance decay after high-temp/humidity aging: After 500 hours at 85℃/85%RH, transmittance dropped from 95% to 78%.
• Poor batch stability of hydrogen-containing silicone oil: Significant fluctuations in volatile content across different batches.
• Rising customer complaints: Complaints due to yellowing increased from 5% to 18%.

[Limitations of Traditional Solutions]

• Switching to imported brands: Slight improvement, but costs rose by 40% with a 6-8 week lead time.
• Adding antioxidants: Improved to 85%, but negatively affected curing speed.
• Lowering curing temperature: Slight relief, but resulted in incomplete curing.

3. The Breakthrough Solution
[IOTA silicone oil anhui co.,ltd.'s Approach]
Diagnosis: Client test data indicated that fluctuations in volatile content and batch instability were the core causes of yellowing.

The Prescription: A Three-Step Approach

Step 1: Grade Recommendation (Week 1)
Recommended Methyl Hydrogen Silicone Oil (Hydrogen content ≥1.55%):

Step 2: Sample Testing (Weeks 2-4)

Step 3: Mass Production Implementation (Weeks 5-8)

4. Results Verification
[Data Comparison]

[Client Feedback]
"IOTA's hydrogen-containing silicone oil has stable batches. Each batch comes with a test report and a unique ID, making traceability possible if issues arise."
—— Client Technical Manager, Feedback in March 2026

[Tracking Record]

• Dec 2025: 3 batches (Stable)
• Jan 2026: 5 batches (Stable)
• Feb 2026: 4 batches (Stable)
• Mar 2026: 6 batches (Excellent)
• Apr 2026: 5 batches (Stable)
• May 2026: 4 batches (Stable)

5. Industry Insights
[5-Step Method for Selecting LED Encapsulants]

1. Step 1: Confirm Hydrogen Content
   • Standard: ≥1.55% (for high-end applications)
   • Risk: Insufficient hydrogen content → low cross-linking density.
2. Step 2: Confirm Volatile Content
   • Standard: ≤5%
   • Risk: High volatile content → high-temperature precipitation → yellowing.
3. Step 3: Confirm Viscosity
   • Standard: 50-75 mm²/s (25℃)
   • Risk: Viscosity too high → difficult handling.
4. Step 4: Confirm Batch Traceability
   • Standard: Unique ID + 12-month sample retention
   • Risk: No traceability → issues cannot be pinpointed.
5. Step 5: Confirm Test Reports
   • Standard: Provided for every batch
   • Risk: No reports → quality cannot be verified.

6. Verifiable Credentials

• ISO9001 Certification: Certificate number available for verification upon request.
• High-Tech Enterprise: Verifiable on the High-Tech Enterprise Certification Network.
• SGS/TÜV Reports: Report numbers available for verification upon request.
• 10+ Patents: In the field of silicone synthesis.

The above case study is compiled from real projects as of May 2026. Client information has been anonymized.

Contact: Manager Zhang at 18055211309
Email: zyf@siliconeoil.cn