2023年7月25日发(作者：)

Product Information

Solar

FEATURES

• Transparent

• Cures to flexible elastomer

• Constant cure rate, regardless of

sectional thickness or degree of

confinement

• Service range of -45 to 200°C

(-49 to 392°F)

• No post cure required

• Two part, 10:1 mix

• RT/HA cure

• Minimal shrinkage

• No exotherm during cure

• No solvents or cure byproducts

• Repairable

• Good dielectric properties

• Deep section cure

• UL 94 V1, V0

• UL RTI 130°C (266°F)

COMPOSITION

• Two-part silicone elastomer

supplied as flowable liquid

Sylgard®

184 Silicone Elastomer

Two-part silicone that cures to a flexible elastomer for

protection of electrical and electronic devices in solar

applications

APPLICATIONS

• Protection of electrical/electronic devices.

• General potting applications including power supplies, connectors, sensors,

industrial controls, transformers, amplifiers, high voltage resistor packs, and

relays; adhesive/encapsulant for solar cells.

TYPICAL PROPERTIES

Specification Writers: Please contact your local Dow Corning sales office or your Global

Dow Corning contact before writing specifications on this product.

Test Unit Result

Mix Ratio

10:1

Color

Clear

Viscosity centipoise or mPa.s

3900

Durometer, Shore A

50

Specific Gravity

1.03

Working Time at RT min

>2 hours

Thermal Conductivity Watt/meter-°K

0.2

cal/ °C

4.3 x 10-4

Linear Coefficient of Thermal Expansion µm/m-°C or ppm

310

UL Flammability Classification

94 V1, V0

UL Temperature Index, Electrical/ Mechanical °C

130/130

Dielectric Strength volts/mil

540

kV/mm

21.2

Dielectric Constant at 100 Hz

2.7

Dielectric Constant at 100 kHz

2.7

Volume Resistivity ohm-cm

1.2 x 1014

Dissipation Factor at 100 Hz

<0.001

Dissipation Factor at 100 kHz

<0.001

DESCRIPTION

Sylgard®HOW TO USE

184 Silicone Elastomer is

Mixing

supplied as two-part liquid component Sylgard 184 Silicone Elastomer is

kits comprised of Part A/Part B to be supplied in two parts as lot-matched

mixed in a 10:1 ratio by weight or base and curing agent that are mixed

volume. It is suitable for manual

in a ratio of 10 parts base to one part

mixing or automated mixing and curing agent, by weight. For further

dispensing. information, consult your local Dow

Corning representative.

When liquid components are thor-

oughly mixed, the mixture cures to a

Pot Life/Working Time

flexible elastomer, which is suited for

Cure reaction begins with the mixing

the protection of electrical/electronic

process. Initially, cure is evidenced by

devices in solar applications. a gradual increase in viscosity,

followed by gelation and conversion to a solid elastomer. Pot life is defined

as the time required for viscosity to

double after Parts A and B (base and

curing agent) are mixed. Sylgard 184

Silicone Elastomer has a pot life of

>2 hours.

Processing and Curing

Thoroughly mixed Sylgard 184

Silicone Elastomer may be poured/

dispensed directly into the container in

which it is to be cured. Care should be

taken to minimize air entrapment.

When practical, pouring/dispensing

should be done under vacuum, par-ticularly if the component being potted

or encapsulated has many small voids.

If this technique cannot be used, the

unit should be evacuated after the

silicone encapsulant has been poured/

dispensed.

Sylgard 184 Silicone Elastomer may

be either room temperature (25°C/

77°F) or heat cured following this

schedule:

~48 hours at room temperature

45 minutes at 100°C (212°F)

20 minutes at 125°C (257°F)

10 minutes at 150°C (302°F)

These data are believed to be typical

and should be used as initial estimates

of cure times. Times will vary slightly

from batch to batch and can be longer

or shorter due to thermal mass of your

parts and your heating ramp rate.

Pretesting is recommended to confirm

adequate cure for your application.

Sylgard 184 Silicone Elastomer can

be placed in service immediately

following the completion of the cure

schedule. No post cure is required.

SURFACE PREPARATION

In applications requiring adhesion,

priming is required. For best results,

the primer should be applied in a very

thin, uniform coating and then wiped

off after application. The surface

should be thoroughly air-dried prior to

application of the silicone elastomer.

Instructions for primer usage can be

found in the Dow Corning literature,

“How To Use Dow Corning Primers

and Adhesion Promoters” (Form No.

10-366) and in the information sheets

specific to the individual primers.

USEFUL TEMPERATURE

RANGES

For most uses, Sylgard 184 Silicone

Elastomer should be operational over

a temperature range of -45 to 200°C

(-49 to 392°F) for long periods of time.

However, at both the low and high

temperature ends of the spectrum,

behavior of the materials and perfor-mance in particular applications can

become more complex and require

additional considerations.

For low-temperature performance,

thermal cycling to conditions such

as -55°C (-67°F) may be possible, but

performance should be verified for

your parts or assemblies. Factors that

may influence performance are

configuration and stress sensitivity of

components, cooling rates and hold

times, and prior temperature history.

At the high-temperature end, the

durability of the cured silicone

elastomer is time- and temperature-dependent. As expected, the higher the

temperature, the shorter the time the

material will remain usable.

COMPATIBILITY

Certain materials, chemicals, curing

agents, and plasticizers can inhibit the

cure of Sylgard 184 Silicone

Elastomer. Most notable of these

include:

• Organotin and other organometallic

compounds

• Silicone rubber containing

organotin catalyst

• Sulfur, polysulfides, polysulfones,

or other sulfur-containing materials

• Amines, urethanes, or amine-containing materials

• Unsaturated hydrocarbon

plasticizers

• Some solder flux residues

If a substrate or material is question-able with respect to potentially

causing inhibition of cure, it is

recommended that a small-scale

compatibility test be run to ascertain

suitability in a given application. The

presence of liquid or uncured product

at the interface between the question-able substrate and the cured gel

indicates incompatibility and

inhibition of cure.

HANDLING

PRECAUTIONS

PRODUCT SAFETY INFORMA-TION REQUIRED FOR SAFE USE

IS NOT INCLUDED IN THIS DOC-UMENT. BEFORE HANDLING,

READ PRODUCT AND MATERIAL

SAFETY DATA SHEETS AND

CONTAINER LABELS FOR SAFE

USE, PHYSICAL, AND HEALTH

HAZARD INFORMATION. THE

MATERIAL SAFETY DATA

SHEET IS AVAILABLE ON THE

DOW CORNING WEBSITE AT

, OR

FROM YOUR DOW CORNING

REPRESENTATIVE, OR DIS-TRIBUTOR, OR BY CALLING

YOUR GLOBAL DOW CORNING

CONNECTION.

USABLE LIFE AND

STORAGE

Sylgard 184 Silicone Elastomer has a

shelf life of 24 months from date of

manufacture at room temperature.

For best results, Sylgard 184 Silicone

Elastomer should be stored at or

below 25°C (77°F). Special precau-tions must be taken to prevent mois-ture from contacting this material.

Containers should be kept tightly

closed and head or air space mini-mized. Partially filled containers

should be purged with dry air or other

gases, such as nitrogen.

PACKAGING

Sylgard 184 Silicone Elastomer is

supplied in nominal 0.45-, 3.6-, 18-

and 200-kg (1-, 8-, 40- and 440-lb)

containers, net weight. Packaging

options may vary.

Consult Dow Corning Customer

Service at (989) 496-6000 for

additional packaging options.

LIMITATIONS

This product is neither tested nor

represented as suitable for medical or

pharmaceutical uses.

HEALTH AND

ENVIRONMENTAL

INFORMATION

To support customers in their product

safety needs, Dow Corning has an

extensive Product Stewardship organ-ization and a team of Product Safety

and Regulatory Compliance (PS&RC)

specialists available in each area.

For further information, please see our

website, , or

consult your local Dow Corning

representative.

information should not be used in

substitution for customer’s tests to

ensure that Dow Corning’s products

are safe, effective, and fully satis-factory for the intended end use.

Suggestions of use shall not be taken

as inducements to infringe any patent.

Dow Corning’s sole warranty is

that the product will meet the

Dow Corning sales specifications

in effect at the time of shipment.

Your exclusive remedy for breach of

such warranty is limited to refund of

purchase price or replacement of any

product shown to be other than as

warranted.

DOW CORNING SPECIFICALLY

DISCLAIMS ANY OTHER

EXPRESS OR IMPLIED WAR-RANTY OF FITNESS FOR A

PARTICULAR PURPOSE OR

MERCHANTABILITY.

DOW CORNING DISCLAIMS

LIABILITY FOR ANY INCIDEN-TAL OR CONSEQUENTIAL

DAMAGES.

LIMITED WARRANTY

INFORMATION – PLEASE

READ CAREFULLY

The information contained herein is

offered in good faith and is believed to

be accurate. However, because

conditions and methods of use of our

products are beyond our control, this

Printed in USA

Form No. 06-1009-01

AGP8735

Dow Corning is a registered trademark of Dow Corning Corporation.

©2007 Dow Corning Corporation. All rights reserved.