Enhanced TDS
Identification & Functionality
- RTU Product Type
- Technologies
- Product Families
- Chemical Description
Araldite LZ 8278 N70 Resin is benzoxazine resin based solution with 70% by weight solids in methyl ethyl ketone. The base benzoxazine resin is chemically characterized by the general benzoxazine structure shown below:
Features & Benefits
- Labeling Claims
- Product Features
- Features and Benefits
Laminates and prepregs for printed wiring boards for
- Low moisture absorption
- Good thermal stability
- High modulus
- Compatible with lead-free processes
- Good moisture resistance
- High modulus
- Good thermal performance, T288 > 60min
- Low Z axis expansion
- UL 94 V0
Applications & Uses
- Product End Uses
- Markets
- Applications
- Application Information
Laminates and prepregs for printed wiring boards with the following performance:
- Non-halogen FR-4
- High reliability applications
- High Density Interconnect (HDI) PCBs
Properties
- Flame Rating
Regulatory & Compliance
- Compliance (Industry Standards)
Technical Details & Test Data
- Varnish Preparation
Araldite LZ 8278 N70 Resin / Aradur HZ 8279 Z40 Resin non-halogen benzoxazine resin system can be formulated with common solvent such as PM, PMA, and Cyclohexanone which is Typically used to manufacture prepregs for PWB applications.
Component Formulation #1 Araldite LZ 8278 N70 Resin 100 g Aradur HZ 8279 Z40 Resin 37.5 g Mg(OH)2 /Fused SiO2 25 - 55g 2 MI 0.05 - 0.1 g solvent 5 - 60 g Solid content 55% - 65% Gel time at 171°C 230 - 330s Remark:The gel time can be adjusted by the ratio of 2 MI
- Product Properties
- Good moisture resistance
- High modulus
- Good thermal performance, T288 > 60min
- Low Z axis expansion
- UL 94 V0
- Curing Cycle
Parameter #1 Initial temperature 80 °C Heating Ramp 2 - 3 °C /min Final Temperature 210 °C Pressure ≥ 350 psi Time at Final Temperature 85 - 95 min - Typical Properties
Varnish Formulation 1 Araldite LZ 8278 N70 Resin 100 g Aradur HZ 8279 Z40 Resin 37.5 g Mg(OH)2 13 g 2-MI 0.1 g Solvent 45 g SiOz 26 g Varnish gel timeat 171°C 230 s Preperg process parameter Oven temperature 171°C Baking time 190 - 220 s Preperg gel timeat 171 °C 110 - 140 s Laminating Cycle parameter Curing temperature 210°C Curing time 90 min RC 40 - 45 % Laminate properties Tg (DSC 10°C/min) 208 / 209°C Tg. (DMA 5°C/min Onset) 206°C Peel strength (1oz ED copper) 1.2 N/mm CTE [Below Tg] 30-50 ppm/°C Td (5% weight lose) > 380°C T288 > 60 min T288 clad 12 min UL-94 VO PCT Water Absorption (120°C&300min)| 0.30% Solder dip (after 120°C&300min PCT) > 5 min - Glass Fabric Pretreatment
The epoxy silane is recommended to pretreatment of the glass fabric.
Safety & Health
- Handling Precautions
First Aid
In case of contact:- Skin: Immediately wash with soap and water. Remove contaminated clothing and launder before reuse. Destroy contaminated shoes.
- Eyes: Immediately flush with water for at least 15 minutes. Call a physician.
- Ingestion: If conscious, give plenty of water to drink. Do not induce vomiting. Call a physician.
- Inhalation: Remove to fresh air. Administer oxygen or artificial respiration if necessary. Call a physician.
- Other: Referral to physician is recommended if there is any question about the seriousness of any injury.
Storage & Handling
- Storage Conditions
Araldite LZ8278 N70 and Aradur HZ8279 Z40 may be stored for up to 9 months at +5 ~ +40°C respectively provided the components are stored in sealed containers. The expiry date is indicated on the label.
Other
- Processing & Application Methods