In the fields of high-end electronic packaging, medical device coating, precision metal decoration, etc., the acid value of UV resin has become a key indicator for determining product reliability. The acid value of traditional UV resin is generally greater than 15 mg KOH/g, and its acidic components continue to release H⁺ ions in a hot and humid environment, causing fatal defects such as metal corrosion, circuit short circuit, and coating powdering. The T-7130 ultra-low acid value UV resin (acid value ≤3 mg KOH/g) launched by Shenzhen U-Sunny completely solves the industry's pain points through molecular structure innovation, providing ultimate protection for high-reliability applications.
1. Excessive acid value: the ignored "invisible killer"
Three major damage mechanisms of high acid value resin
|
Failure scenario |
chemical mechanism |
Consequences |
|
metallic corrosion |
2H⁺ + Fe → Fe²⁺ + H₂↑ |
Coating blistering/contact resistance increase |
|
electron transfer |
The H⁺ penetrates the encapsulation layer and attacks the copper wire |
PCB circuit short circuit/signal distortion |
|
Coating hydrolysis |
Acid catalyzes the cleavage of ester bonds |
Flaking/loss of gloss |
2. T-7130 resin: molecular-level acid value control technology
Four innovative designs
Ether bonds replace ester groups:
The main chain adopts a polyether-acrylate structure to eliminate easily hydrolyzed ester bonds (-COOR)
Hydrolysis stability is improved by 500% (85℃/85%RH test for 2000h)
Closed catalytic system:
The photoinitiator coordinates metal ions (such as Zr⁴⁺) to form a neutral chelate after curing
Ultra-pure monomer distillation:
Acrylic acid monomer purity> 99.95%, residual acid content < 100 ppm.
3. Core application scenarios: from microelectronics to medical implants
(1) Chip packaging bottom filler
Technological breakthroughs:
Acid value <2 mg KOH/g, passed JEDEC MSL-1 pretreatment certification
Coefficient of thermal expansion (CTE) matches silicon chip (58 ppm/℃)
Reliability data:
After 1000 thermal cycles from -55℃ to 125℃, shear strength retention rate >95%
(2) Medical metal device coating
Industry first:
The world's first low-acid value UV resin that has passed ISO 10993 biocompatibility certification
High-pressure steam sterilization resistance (134℃/18min) >200 times.
4. Technology Frontier: Development of Next-Generation Zero Acid Value Resins
1. Application of Bio-Based Monomers
Castor Oil Derivatives Replace Petroleum Acrylic Acids: Acid Value Reduced to 0.5 mg KOH/g
Carbon Footprint Reduced by 60% (ISO 14067 Certified)
2. Self-Healing Coatings
Microencapsulated Epoxy Compounds: Release Healing Agents to Neutralize Residual Acids after Scratching
3. Photothermal Dual-Cure System
Real-Time Monitoring of Acid Value in Shadowed Areas: Infrared Thermal Imaging Feedback Curing Degree＞99.9%
Upgrade your material solution now!
✅ Get free T-7130 samples + "White Paper on Acid Value Control Technology"
✅ Please contact us: www.uychem.com