How IOTA Helps LED Packaging Enterprises Solve the Yellowing Issue-Iota

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News > Dynamic industry > How IOTA Helps LED Packaging Enterprises Solve the Yellowing Issue

How IOTA Helps LED Packaging Enterprises Solve the Yellowing Issue

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%):

Requirement	Client Requirement	IOTA Solution
Hydrogen Content	≥1.55%	≥1.55%
Volatile Content	≤5%	≤5%
Viscosity (25℃)	50-75 mm²/s	50-75 mm²/s
Lead Time	≤2 weeks	Regular stock, ships in 1 week

Step 2: Sample Testing (Weeks 2-4)

Test Item	Original Product	IOTA Solution
Hydrogen Content	1.50%-1.70%	≥1.55%
Volatile Content	3%-8%	≤5%
Viscosity	5-80 mm²/s	50-75 mm²/s
Batch Traceability	None	Unique ID + 12-month sample retention

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

Phase	Test Scale	Result	Decision
Lab Trial	5kg lab scale	88% retention after 500h aging
Pilot Run	500kg production line	90% retention after 500h aging
Mass Production	5-ton scale	92% retention after 1000h aging	Officially Adopted

4. Results Verification
[Data Comparison]

Dimension	Before	After	Improvement
Transmittance after 500h aging	78%	93%	+15%
Transmittance after 1000h aging	65%	92%	+27%
Volatile Content Fluctuation	3%-8%	≤5%	Stability Improved
Complaint Rate	18%	3%	Decreased by 83%
Lead Time	6-8 weeks	1 week	Shortened by 85%

[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]

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

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