Liquid embedding material of double components Ruichem CX-513

This product is a liquid embedding material of double components, and is widely used in capacitor, tiny parts of transformer,etc

TECHNICAL DATA SHEET

INTRODUCTION
This product is a liquid embedding material of double components. It solidifies under normal temperature, and is widely used in capacitor, tiny parts of transformer, and ignition coil for their insulating pouring. When temperature raises, it will solidify more quickly. The hardened substance has good gloss and at the mean time, it has good insulativity.

FEATURES
1. Suitable for automatic assembly line work on a large scale
2. Low viscosity and strong penetrability, and hence can fill cells and wires
3. Little subsiding of other contents, no layers, no wasting, and well-distributed
4. Low exothermic peak and small convergent force when solidifying
5. Good electric property and michanical property of the hardened substance
6. Good heat resistance
7. Good sticking ability to various materials
8. Low water absorbing and coefficient linear expansion
9. Hardly flammable, weather resistant, heat conducting, and temperature-changing resistant

Characteristics before solidifying
ITEMS
A component
B component (curing agent)
Colour
Black liquid
Brown liquid
Viscosity (25°C)
1.4×103 pcs
30 pcs
Density
1.7~1.8
1.1~1.15
Proportion
4
1
Viscosity of the mixture (40°C)
400 pcs

Operating time: 50 minutes (25°C)
Solidifying time: 4 hours (25°C)
Hardening time: 12 hours (25°C) or 2 hours (60°C)

Characteristics after solidifying
volume resistance (25°C)
1.2×1015 Ohm-cm
Surface resistance (25°C)
1.3×104 Ohm
Voltage resistance (25°C)
16~19 KV/ mm2
Compression strength
20~23 kg/mm2
Bending strength
9~11 kg/mm2
Impact strength
6~9 kg/cm/ mm2
Inductivity
3.8 1Khz
Inductive loss
0.02 1Khz

GOOD CRAZING RESISTANCE
There're lots of causes for crazing, mainly by embedding and pouring. In order to improve the crazing resistance of hardened substance, Ruichem try best to prevent the crazing by padding, using resin, curing agent, and accelerating agent with high molecular weight. We also regularize manipulating during work to ensure the high quality of the product.

Table1: measures to prevent crazing
TTEMS
MEASURE
EFFECTS
Epoxy Resin
using pure epoxy resin for electrical industry with quite number of anhydride
lower the water absorbing, cut down resin modulus, and adjust curing time and the highest temperature when giving out heats
Curing agent
clean curing agent of low heat releasing and with low moisture
Lower the water content
Accelerating agent
adding pure accelerating agent
control the curing time and prevent crazing caused by sharp temperature changing

PACKAGE
A component: 20kg / barrel
B component: 5kg / barrel

SHELF LIFE AND STORAGE
Can be kept for 3 months when put in shade place of low temperature.

METHOD OF APPLICATION
Normal and vacuum are two crafts to pot, the previous one is mainly for potting adhesive curing at normal temperature that is used in low-voltage apparatus. While vacuum craft is usually applied in potting adhesives which is cured above normal temperature for high-voltage electrical apparatus' potting.

THE BASIC PROCESS TO EMBED

1. Preheat
2. Mix the two components
3. Deaerate
4. Embed
5. Demould