9053 RA / B flame-retardant epoxy potting compound
 
First, the main ingredient
A materials: epoxy resin, fillers, additives
B materials: flexible curing agent, additives
 
Second, product characteristics:
1. Low viscosity, good operational
2. Non-brominated, non-antimony-based environmental potting material, flame retardancy of UL94 V-0 级
3. Excellent resistance to thermal shock, -40 ~ 120 ℃ 20 Cycles
4. And engineering plastics, ceramics and other strong adhesive substrate
5. Excellent electrical properties
6. Lead, cadmium, hexavalent chromium, polybrominated biphenyls and polybrominated diphenyl ethers
 
Third, the main purpose
1. Potentiometer for the package focused
2. For special packaging electronic components
 
Fourth, packaging specifications
RA material: 33kg metal pail
RB material: 27kg metal pail
 
V. Transportation:
This product is non-dangerous goods, according to general goods transportation.
 
VI, storage:
1. Shelf life: A six-month B feed material for six months
2. Airtight storage, preferably under 15 ~ 25 ℃ storage.
3. Avoid direct sunlight.
4. Moisture and fire.
Seven characteristics of the product
Items index detection based on
Characteristics, before solid
Visual appearance of the A brown viscous liquid
B red-brown liquid
Viscosity
(40 ℃, mPa Zui) A 10000 GB/T2794
B 200 ~ 300
A B <2000
Density
(25 ℃, g / ml) A B 1.40 ~ 1.45 GB/T4472
Mixing ratio (weight ratio) RA: RB = 100:20 /
Can use the time (40 ℃, h)> 3.5 /
Gel time (150 ℃, 1g, s) 180 ~ 230 /
After the cure characteristics
Hardness (25 ℃, D) 65 Shore-D
Bending strength (25 ℃, N/mm2)> 74 GB/T9341
Impact strength (KJ/m2)> 34 GB/T1043
Volume resistivity
(500V, Ω Lu m) 25 ℃> 1015 GB/T1410
40 ℃> 1014
100 ℃> 1012
120 ℃> 1011
Surface resistivity (25 ℃, Ω)> 5? 1014
Dielectric constant (25 ℃, 10KHz) 3.7? 0.1 GB/T1409
Dielectric loss tangent (25 ℃, 10KHz) <1.0
Water absorption (23 ℃, 24h,%) <0.1 GB/T1034
Fire retardant (class) V-0 UL-94
Dielectric Strength (KV / mm) 25 ℃> 25 GB/T1408
100 ℃> 23

VIII, 9053RA/RB casting process
 
 
 
 
9053RA
 
9053RB
 

 
 


                                    Preheat 70 ~ 80 ℃ 30 ℃ preheating
                                    Stir deaeration deaeration 2 hours 2 hours
                                    1 ~ 3 torr vacuum degree of 1 ~ 3 torr vacuum
 
Measuring ingredients
 
Measuring ingredients
 

 
 
 


                                    100 parts (by weight) 20
 
Mixture
 

 
 
 
 


Preheat the device
                                                      Temperature of 40 ~ 50 ℃, 4 ~ 6 torr vacuum

 


 
Potting
Temperature of 100 ~ 105 ℃ / 30min or more

 
 


               Normal temperature and pressure casting
 
Curing
 

 
 


         Atmospheric pressure curing 100 ℃ / 4hrs