Fast curing 2k Polyurethane Potting adhesive for LED drivers power supply unit SP297
SP297 is a solvent-free, high-performance two-component polyurethane potting compound. The resin part (Part A) contains hydroxyl groups, and the curing agent (Part B) is based on isocyanate. They were mixing A and B cures to form an elastomer without any significant volume change.
The product can be cured between 15-65 degrees without bubbles, has high volume resistivity, and has flame retardant grade UL94 V-0.
Mixture ratio: AB=100:15 (Mass ratio)
Thermal conductivity 0.64W/m.k
1. Comply with ROSH and REACH standards;
2. Thermal conductivity, flame retardant,
CTI value ≥ 600;
3. Curing mode: room temperature curing or 65ºC-30min can be completely cured.
1. Filling coating casting, metal, and plastic bonding well;
2. Casting of communication supplies, transformers, electrical and electronic equipment;
3. For charging pile potting, potting of small and medium-sized electronic components, such as sensors, LED waterproof power supply, mutual inductors, etc.
| Specification of Part-A (resin) |
| Items |
Standard |
Specification |
Typical value |
| Colour |
Visual |
Black |
Black |
| Viscosity (mPa.s) (Brookfield, 7# 10rpm) |
GB/T 2794 |
7500±1500 |
7500 |
| Density (g/cm3) |
GB/T 13354 |
1.50 ± 0.1 |
1.47 |
| Specification of Part-B (hardener) |
| Items |
Standard |
Specification |
Typical value |
| Colour |
Visual |
Brown |
Brown |
| Viscosity (mPa.s) (Brookfield, 7# 10rpm) |
GB/T 2794 |
100±20 |
92 |
| Density (g/cm3) |
GB/T 13354 |
1.20 ± 0.1 |
1.20 |
| Specification after mixture |
| Items |
Standard |
Specification |
Typical value |
| Mixing ratio |
Volume ratio |
A:B=100:15 |
/ |
| Colour |
Visual |
Black |
Black |
Viscosity (mPa.s)
(Brookfield, 7# 10rpm) |
GB/T 2794 |
2500±1000 |
1800 |
| Density (g/cm3) |
GB/T 13354 |
1.40 ± 0.1 |
1.35 |
| Pot life (min) |
/ |
50 ±10 (adjustable) |
40 |
| Curing speed |
In a plastic cup 40g/room temperature |
25ºC/H |
24 |
| In a plastic cup 60g/heated |
60ºC/30min |
Full cured |
| Specification after cured |
| Items |
Standard |
Specification |
Typical value |
| Solid content (%) |
GB/T 2793 |
≥ 99 |
99.5 |
| Hardness (Shore D) |
GB/T 531 |
85 ± 5 |
82 |
| Tensile strength (MPa) |
GB/T 528 |
≥ 4.0 |
5.0 |
| Elongation (%) |
GB/T 528 |
>60 |
65 |
Dielectric strength
(25ºC,kV/mm) |
GB/T 1695 |
>20 |
21 |
Dielectric constant
(100 KHz, 25ºC) |
GB/T 1693 |
>3 |
4.64 |
| Dielectric loss (100 KHz, 25ºC) |
GB/T 1693 |
-- |
0.1 |
| Glass transition temperature (Tg ºC) |
GB/T 11998 |
-- |
10 |
| Coefficient of expansion (-100~150ºC)um/m·ºC |
ISO 11359 |
-- |
125 |
| Volume resistivity (Ω·cm) |
ASTM D 257 |
≥ 1014 |
3.7×1014 |
| Thermally conductivity (W/m.k) |
ASTM D 5470 |
≥0.6 |
0.64 |
| CTI/value |
GBT 4207 |
≥600 |
≥600 |
Water absorption
(24h, 25 ºC,%) |
GB/T 8810 |
<0.2 |
0.13 |
| 0Flame retardant (UL-94) |
ANSI/UL-94 |
V-0 |
V-0 |
| Service temperature (ºC) |
/ |
-40 ~ +150 |
/ |
| Note: The above typical values were all detected at 25 ºC; |
| Thermal impedance and thermal resistance data for different thickness conditions: |
| Items |
Standard |
Specification |
Typical value |
| Thermal impedance |
K*cm²/W |
1.784mm |
34.9487 |
| Thermal resistance K/W |
K/W |
4.9405 |
| Thermal impedance |
K*cm²/W |
3.893mm |
58.2561 |
| Thermal resistance K/W |
K/W |
8.5318 |
| Thermal impedance |
K*cm²/W |
6.623mm |
72.9579 |
| Thermal resistance K/W |
K/W |
10.4160 |
Manual mixing process (230g mixing volume)
1. Preheating: AB components in the low temperature, the viscosity will become high, it is recommended to preheat to 20 ~ 25 ºC, easy to use.
2. Mixing: Weigh the components A and B according to the proportion, mixing vertical stirring rod, clockwise (or counterclockwise) in the same direction and rapid mixing for 3 minutes, 110-120 circles/min, pay attention to the bottom of the container, the edge of the
The department should be stirred evenly, otherwise, there will be a localized phenomenon of non-curing.
3. Potting: Pour the mixed products into the device (Note: 2-3 minutes to fill the product with glue), if the product has a complex structure and large volume, it should be potted in stages.
After using
After using
The operating container will be cleaned before use. Mixing the main agent and stiffening agent, With the different kinds of stiffening agents and quantity. The process should be completed as soon as possible.
Package specification:
PART A: 25KG per bucket
PART B: 3.75KG per bucket
|
Storage:
Shelf life: Part A for 12 months, Part B for 9 months in unopened packaging in a cool and dry storage place at temperatures between +8ºC to + 28ºC.
.
|
Transportation:
Moisture-proof, rainproof, sunproof, high-temperature roof, keep away from heat sources, handle with care, and do not squeeze or collide.
|
SEPNA is committed to the research, development, and production of advanced new materials. The products are centered around MS polymer, epoxy resins, polyurethane, the formation of new energy, high-end assembly, and electronic adhesives three major series of products.
Focus on the core business, focusing on providing customers with more suitable and more secure "bonding, sealing, protection" new materials.
Mainly for new energy vehicles, energy storage and elevators, electronics, modified vehicle manufacturing, and other areas of domestic and
foreign customers to provide a series of differentiated and refined new materials products and integrated solutions.
Our factory adopts an ERP automated quality control system, and a full-process ERP management system, and has passed IATF16949, ISO 9001, ISO14001, and ISO45001 system certifications.
1. Outstanding manufacturers and powerful factories.
2. OEM / ODM AVAILABLE (Professional design team providing package design solutions for OEM / ODM customers free of charge.
3. Free Samples.
4. Imported Raw Materials and Test Equipment.
5. Strict quality control (We have passed GB/T 19001-2016, IS09001:2015, and IATF 16949:2016 quality system authentication, and we can provide ROHS/SGS/ MSDS certification of products).
6. Deliver in 7-15 Days after payment.
7. Excellent QC Team and R&D Team.
8. Provide professional application technology solutions.
9. Complete the after-sales service system.
10. Partners with Top 500 Global Companies.
Sepna's products have been widely used in the international market, mainly in North America, South America, Asia, Southeast Asia the Middle East, Oceania, etc.
Until now, she has serviced nearly 1000 enterprises all over the world.
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A1. Please provide your requirements, product specifications, quantity, and trade terms.
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A2.Yes.Private labeling service is available
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A4. Yes. We offer free samples
Q5. What is your product's shelf life?
A5.9 months when stored in cool dry and well-ventilated areas under 25ºC.
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