LED potting silicone rubber (BQ-4150A/B)
Introduction
Liquid silicone encapsulant rubber, two-component, high refractive index. Primarily as a phosphor glue.
Feature
High refractive; High transmittance; Good weather & heat resistance; Excellent flow performance; Longer operating time
Application
Phosphor glue for high-power LED
Character
Appearance | Part A:transparent liquid Part B:transparent liquid |
Viscosity (25°C, Rotational viscometer) | Part A:13000mPa.S Part B:3000mPa.S |
Mixed viscosity(25°C) | 6000 mPa.S |
Operating time after mixing | 8h |
How to use
The method of application for phosphor glue making.
1. Use ratio
BQ-4150A 1 copy
BQ-4150B 1 copy
Phosphor 0.15-0.5 copy(recommended amount)
2. Mix two parts evenly, and then defoaming it under vacuum.(it’s unnecessary to heat in the whole process)
3.After defoaming, potting it by needles or dispensing. In order to drive the air out of rubber completely, you’d better defoaming again under vacuum to the needles which has full of the rubber.
4. Before encapsulant, preheat the stand or base 120C/3h at least, so that the wet gas can be cleared up and avoid the bubble when curing.
5. Curing condition
150°C/1h
Performance evaluation
Test project | Test condition and method | Result |
Hardness | Hardness tester (Shore A) | 55. |
Transmittance (%) | UV spectrophotometer | 91% |
Refractometer | Refract meter | 1.52 |
storage
Sealed storage in cool and dry conditions at room temperature.
Shelf life
6 months under above conditions. It remain can be used after shelf life if the technical data is qualified.
Package
Part A:0.5 Kg/bottle,Part B:0.5 Kg/bottle
Notes
Application
during the application or storage period ,avoid contact the subjects which contain the P, S, N, Sn, water, polyurethane resin and so on .or cause the obstruction and deterioration of curing.(e.g.solution for cleaning the plastic cups, additional toxic components within the oven, organic acids,etc.)
Safe
1. Note the labor wearable during the application, avoid high temperature burns during the construction process, and prohibit consumption.
2. Use the product carefully, note the safety issues before and during use, more over, follow the relevant provisions of national or local government safety regulations. (Refer to the appropriate safety guidelines for details in MSDS)
LED lights potting silicone rubber