Ultra High Strength Epoxy
Introduction
Ultra High Strength Epoxy is a two-component casting compound for encapsulation and insulation of high-load structural parts.
Products Features
1. Ultra-High Mechanical Performance
Tensile strength 75~80MPa, Shore D hardness 90~95, withstands extreme loads and impact.
2. Vacuum Casting Compatible
Low viscosity at 40℃, 1:1 mixing ratio, dense and void-free molding.
3. Class F Insulation
Volume resistivity up to 10¹⁵Ω·m, meets Class F insulation for stable electrical isolation.
4. Long-Term Weather Stability
Resists oil, moisture and temperature changes, no cracking or failure in long service.
Basic parameters of the product before mixing
|
Component |
Base Agent |
Curing Agent |
Citation standard |
|
Color |
Bright red |
Grayish-brown |
一一 |
|
Viscosity 40℃(mpa.s) |
1600~2200 |
900~1200 |
GB/T24148.4-2009 |
|
Density(g/mL) |
1.12~1.22 |
1.05~1.15 |
GB/T6750-2007 |
Note: Main agent can be customized.
Process Control
1. Part Pre-treatment
Apply release agent to mold, assemble parts, then dry at 80–100℃ for 5–8 hours.
2. Material Preheating
Mix at B:A = 1:1, preheat at 70℃ for 2–3 hours.
3. Equipment Preheating
Heat casting tank to 70–75℃, mixing tank to 60℃.
4. Vacuum Degassing
Stir and evacuate to 50–150Pa at 60℃, start casting after full degassing.
5. Casting & Pressurization
Cast for 30–70 minutes, hold vacuum for 30–40 minutes, break vacuum and apply 2kg pressure before unloading.
Curing temperature profile
|
Stage |
Content |
Curing time (min) |
Curing temperature (°C) |
|
1 |
heating |
30 |
25~80 |
|
2 |
constant temperature |
360 |
80 |
|
3 |
heating |
15 |
80~100 |
|
4 |
constant temperature |
240 |
100 |
|
5 |
heating |
15 |
100~130 |
|
6 |
constant temperature |
360 |
130 |
Note: The curing temperature profile can be adjusted appropriately according to different product characteristics and requirements without affecting product performance.
Product Characteristics After Curing
|
Testing items |
Ultra-high strength epoxy resin |
Reference Standards |
|
Tensile strength(MPa) |
75~80 |
GB/T 15022.2-2017 |
|
Tensile modulus of elasticity (MPa) |
7.89~8.99*10³ |
|
|
Bending strength (MPa) |
116~136 |
|
|
Flexural modulus (MPa) |
8.62~9.66*10³ |
|
|
Impact strength (KJ/m²)) |
56~62 |
|
|
Elongation at break (%) |
1.0~1.2 |
|
|
Compressive strength (MPa) |
156~165 |
|
|
Hardness (Shored) |
90~95 |
|
|
Volume resistivity (Ω·m) |
1015 |
|
|
Electrical strength (MV/m) |
26 |
Packaging & Storage
Insulation Class: F
Packaging Specifications: 20 KG or 200 KG
Shelf Life and Storage Conditions:
Shelf life: 180 days. After the shelf life, the product must pass inspection before use. Store in a well-ventilated, dry place, away from moisture and fire.
Customization
1. Color Customization
Base color customizable for line identification & appearance.
2. Viscosity Adjustment
Fine-tune 40℃ viscosity for different casting processes.
3. Insulation Grade
Custom Class B/H insulation to meet industry standards.
Company Strengths
1.Process Support
Professional vacuum casting guidance with full set of process parameters.
2.Full-Link QC
Complete inspection from raw material to finished product, stable & traceable quality.
3.Mass Production
Standard production line, regular items in stock, support large-volume orders.
Applications
Electronics Protection
Used for potting PCBs, sensors, and control units in harsh environments-enhancing mechanical protection and electrical insulation.
Power Modules
Ideal for encapsulating high-power IGBTs, inverters, and converters where structural integrity and thermal stability are critical.
Industrial Components
Applied in heavy-duty castings such as bushings, insulators, and structural supports that demand long-term load-bearing performance.
Precision Tooling & Molds
Serves as a durable matrix for vacuum-cast tooling and prototype molds requiring fine detail reproduction and wear resistance.
FAQ
Q1: How should this product be stored and what is its shelf life?
The product should be sealed and stored in a cool, dry and ventilated environment, away from moisture and fire. The unopened shelf life is 180 days.
Q2: How long can the mixed A and B components be used?
After mixing at a 1:1 ratio at 25℃, it is recommended to complete casting within 30–40 minutes.
Q3: What pretreatment is required for parts before casting?
Apply release agent to the mold, assemble the parts, then dry them in an oven at 80–100℃ for 5–8 hours.
Q4: Can the curing temperature profile be adjusted according to needs?
It can be adjusted properly according to part characteristics, and reasonable adjustment will not affect the final performance.
Q5: What safety precautions should be taken when operating this product?
Wear gloves and a mask during operation to avoid direct skin contact and inhalation of volatile gases.
Q6: Can expired materials still be used?
Expired materials are not recommended for direct use. They can be used only after passing professional performance tests.
Precautions
1. Wear gloves and a mask during handling to avoid direct skin contact with the product.
2. If the product comes into contact with eyes, immediately rinse with clean, running water for 10 to 15 minutes. If severe discomfort occurs, seek medical attention immediately after rinsing.
3. If the product gets on skin, wipe it off with a soft, clean paper towel or cloth, then wash hands with hand sanitizer.
4. If you inhale product vapors and experience discomfort, immediately move outdoors. In severe cases, seek medical attention.
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