Year1
- 规格：
- 49.8KG/组
- 型号：
- DC160
- 颜色：
- A白色B黑色
The silicone elastomer is supplied as a two-component set of materials, which consists of two liquid components. Groups are gray and components are yellowish for easy identification and checking that they are thoroughly mixed. When the two components are fully mixed in a weight or volume ratio, the mixed liquid will solidify into a flexible elastomer. This product is suitable for potting and sealing electrical/electronic products.
Silicone elastomers can be cured at room temperature or accelerated curing at high temperatures. Pot life and room temperature cure time are independent of the amount of material used. The material exhibits no significant shrinkage or temperature rise during curing.
The silicone elastomer completed the flammability test of plastic materials and passed -level certification.
Usage
r Silicone elastomer has completed the flammability test of plastic materials and passed -level certification.
Usage
Mixing
r The components and components of the silicone elastomer should be thoroughly mixed in a ratio of: (weight or volume). The mixed material is uniformly gray in color. Mixing can be done manually or using automated mixing and batching equipment.
Degassing
In applications sensitive to entrained air, silicone elastomers can be vacuumed to remove entrained air after mixing and potting. Air bubbles can be removed by pumping air under a certain degree of vacuum for two minutes. The evacuation time can be extended when the volume is large.
Working time
The viscosity of r silicone elastomer will double in minutes after mixing at room temperature. The viscosity will gradually increase over time but the material should remain fluid within approx.
Curing
r Silicone elastomers can be cured at room temperature or accelerated curing at elevated temperatures. The curing time at various temperatures is as follows. When the amount of material is large, the time should be appropriately extended.
hours
-hours
-hours
.-hours
Primer
In applications requiring good bonding, primer should be applied first. It is recommended to use Dow Corning primer but it has different bonding effects on different substrates. For this situation Dow Corning Primer and Dow Corning Primer are suitable substitutes. Adhesion will gradually increase after initial cure so the time required to achieve optimal bonding may be longer than the cure time. Indicative information when using primers can be found in Dow Corning's information "How to Use Dow Corning Primers and Adhesion Promoters" (data number: -) and seed primer information.
Typical properties
The following data are not for use in formulating technical specifications
Supply properties
Appearance (component components) gray/yellow
Viscosity poise/
Mixing specific weight or volume:
Specific gravity./
Properties after mixing: (weight or volume)
Appearance gray
Viscosity. Poise
Viscosity Poise after minutes
Cure properties Physical properties
Appearance gray
Shore hardness
Tensile strength
Elongation %
Specific gravity
Flammability level
Volume expansion coefficient/(-)
Water absorption %
Thermal conductivity/(..)
Curing quality and electrical properties< br/> Dielectric strength/
Dielectric constant
Time
Time
Dissipation factor
Time
Time
Volume resistivity.< br/> Note that the values in various sales specifications are for use-type rheometers.
Note that in most cases (), a copy of the company's test method that conforms to the standard test method is available upon request.
Injection viscometer #The measuring shaft rotates per minute.
Note that the thickness of the sample is when the minimum curing time is minutes.
NOTE Tests, compensation, expressions and descriptions of flammability are based on standard small-scale laboratory tests. This test is not reliable in determining, evaluating, predicting or describing the flammability or combustion characteristics of a product under actual combustion conditions whether the material is used alone or in mixtures with other materials.
Note that it should be immersed in water for hours.
NOTE: Follow the precautions on the container label and on the Material Safety Data Sheet. Appropriate ventilation conditions should always be provided during use.
Inhibition
Certain materials will inhibit silicone elastic solids. The most important materials to pay attention to are:
Organotin compounds and organometallic compounds
Sulfur polysulfide compounds sulfur-containing materials< br/>Amine urethane and amine-containing materials such as certain epoxy materials.
Additional information on cure inhibition can be found in Dow Corning's data sheet "How to Use R-Brand Elastomers" (data number: -).
Repairability
Users often want to reuse defective machined parts. Most rigid potting materials are difficult to pour in or remove without causing additional damage to the internal circuitry. Silicone elastomer can be easily and selectively removed and repaired, and then the repaired part can be filled and sealed again with material.
WhatsApp
