MG Chemicals RTV102 - White Silicone Adhesive Sealant

RTV102 one-component, ready-to-use adhesive sealants are extremely versatile. They cure to a tough, durable, resilient silicone rubber on exposure to atmospheric moisture at room temperature. Acetic acid vapors are released from the sealant surface as a by-product of cure. RTV102, RTV103, RTV106, RTV108, RTV109, RTV112, RTV116 and RTV118 one-component, ready-to-use adhesive sealants are extremely versatile. They cure to a tough, durable, resilient silicone rubber on exposure to atmospheric moisture at room temperature. Acetic acid vapors are released from the sealant surface as a by-product of cure. Since all these sealants utilize a moisture cure system, they must not be used in thicknesses of greater than 6mm (1/4 in.). Where section depths exceed 6mm (1/4 in.), Momentive Performance Materials one component, addition cure or two-component silicone rubber compounds are recommended.

Chemical Family: Silicon-based Compounds

Product Type: 1K (1 component) Adhesive, Encapsulant, Potting Compound

Cure Method: Air Dry, Moisture Cure

Application Area: Ceiling Coverings, Gaskets

Knowde Enhanced TDS

Identification & Functionality

Features & Benefits

Features

General purpose pastes

Key Attributes
  • One-component products
  • Capability to cure at room temperature and ambient humidity
  • Self adhesion properties
  • Low temperature flexibility
  • High temperature performance
  • Excellent weatherability and ozone and chemical resistance
  • Excellent electrical insulation properties

Applications & Uses

Potential Applications

General purpose bonding, sealing, electrical insulation, formedin- place gaskets. Can be applied to vertical or overhead surfaces.

These sealants were not designed for and should not be used for applications intended for permanent implantation into the human body. These sealants are not for use in delicate electrical and electronic applications in which

Processing Recommendations

Surface Preparation
RTV102 sealants will bond to many clean surfaces without the aid of primers. These surfaces typically include many metals, glass, ceramic, silicone rubber and some rigid plastics. These adhesive sealant products will also produce fair bonds to organic rubber and to some flexible plastics not containing fugitive plasticizers (which migrate to the surface,
impairing adhesion). An evaluation should be made to determine bond strength for each specific application. For difficult-to-bond substrates, use of a primer is suggested. Primers SS4004, SS4044 and SS4179 are recommended for use with these sealants. Complete information and usage instructions for these primer products are contained in Where adhesion is required, surfaces should be thoroughly cleaned with a suitable solvent such as naphtha or methyl ethyl ketone (MEK) to remove dirt, oil and grease. The surface should be wiped dry before applying the adhesive sealant. When solvents are used, proper safety precautions must be observed. a separate product data sheet.

Where adhesion is required, surfaces should be thoroughly cleaned with a suitable solvent such as naphtha or methyl ethyl ketone (MEK) to remove dirt, oil and grease. The surface should be wiped dry before applying the adhesive sealant. When solvents are used, proper safety precautions must be observed.

Application and Cure Time Cycle

Paste-consistency products may be applied directly to clean or primed substrates. Where broad surfaces are to be mated, the sealant should be applied in a thin, less than 6mm (1/4 in.) diameter, bead or ribbon around the edge of the surface to be bonded.

Flowable products may be applied to clean or primed substrates by pouring directly from the original container or dipping. These products will self-level on a surface, filling small crevices and surface voids. Depth of potted sections should not exceed 6mm (1/4 in.).

The cure process begins with the formation of a skin on the exposed surface of the sealant and progresses inward through the material. At 25°C (77°F) and 50% relative humidity, RTV102 sealants will form a surface skin which is tack-free to the touch in 15 to 30 minutes. Once the tack-free skin has begun to form, further tooling of the adhesive sealant is not advisable.

Higher temperatures and humidity will accelerate the cure process low temperatures and low humidity will slow the cure rate.

As the adhesive sealant cures, acetic acid vapors are released from the sealant surface. The odor of acetic acid will completely disappear when curing is completed.

A 3mm (1/8 in.) section of adhesive sealant will cure through in approximately 24 hours at 25°C (77°F) and 50% R.H. Since cure time increases with thickness, use of these adhesive sealants should be limited to section thicknesses of 6mm (1/4 in.) or less.

Properties

Color
Physical Form
Mechanical Properties
ValueUnitsTest Method / Conditions
Elongation450%
Hardness Shore A30
Peel Strength7 (40)kg/cm (lb/in)
Shear Strength14 (200)kg/cm2 (lb/in2)⁽²⁾
Tear Strength8 (45)kg/cm (lb/in)
Physical Properties
ValueUnitsTest Method / Conditions
ColorWhite
Specific Gravity1.05%
Thermal Properties
ValueUnitsTest Method / Conditions
Coefficient of Expansion15x10⁻⁵cm/cm, °C
Coefficient of Expansion15x10⁻⁵(in/in, °F)
Linear Shrinkage1%
Thermal Conductivity0.12(Btu/hr/ft2, °F/ft)
Thermal Conductivity0.0005cal/sec/cm2, °C/cm
Electrical Properties
ValueUnitsTest Method / Conditions
Brittle Point-60 (-75)°C (°F)
Dielectric Constant (at 60 Hz)2.8
Dissipation Factor (at 60 Hz)0.001
Maximum Continuous Operating Temperature204 (400)°C (°F)
Maximum Intermittent Operating Temperature260 (500)°C (°F)
Volume Resistivity3x10¹⁵ohm-cm
Cured Properties
ValueUnitsTest Method / Conditions
Dielectric Strength20 (500)kv/mm (v/mil)
Tensile Strength28 (400)kg/cm2 (lb/in2)⁽²⁾
Uncured Properties
ValueUnitsTest Method / Conditions
Application Rate400g/min
ConsistencyPaste
Tack Free Time20Minutes
Note
  • (1) Cure time 7 days at 25°C (77°F), 50% relative humidity.
  • (2) 1 in. x 8 in. stainless steel screen at 180° pull angle.
  • (3) Information is provided for customer convenience only. Properties are not tested on a routine basis.
Note
  • (1) Cure time 3 days at 25°C (77°F) / 50% relative humidity.
  • (2) At 100% cohesive failure.
  • (3) At 100% cohesive failure using 1 in. x 8 in. stainless steel screen at 180° pull angle.
  • (4) Information is provided for customer convenience only. These properties are not tested on a routine basis.
Note
  1. Cure time 3 days at 25°C (77°F) / 50% relative humidity.
  2. At 100% cohesive failure.
  3. At 100% cohesive failure using 1 in. x 8 in. stainless steel screen at 180° pull angle.
  4. Information is provided for customer convenience only. These properties are not tested on a routine basis.
Note
  • Cured Properties: Cure time 7 days at 25°C (77°F), 50% relative humidity.
  • Peel Strength: 1 in. x 8 in. stainless steel screen at 180° pull angle.
  • Thermal: Information is provided for customer convenience only. Properties are not tested on a routine basis.

Regulatory & Compliance

Quality Standards
UL

File 36952

Food Contact

FDA 21 CFR 177.2600, USDA, NSF International Std. No. 51

Patent Status

Nothing contained herein shall be construed to imply the nonexistence of any relevant patents or to constitute the permission, inducement or recommendation to practice any invention covered by any patent, without authority from the owner of the patent.

Technical Details & Test Data

Bond Strength Development

In addition to the effects of temperature and relative humidity, development of maximum bond strength will depend on joint configuration, degree of confinement, sealant thickness and substrate porosity. Normally, sufficient bond strength will develop in 12 to 24 hours to permit handling of parts. Minimum stress should be applied to the bonded joint until full adhesive strength is developed. Eventually the adhesive strength of the bond will exceed the cohesive strength of the silicone rubber sealant itself. Always allow maximum cure time available for best results.

Packaging & Availability

PACKAGING AND DISPENSING

RTV adhesive sealants from Momentive Performance Materials are supplied readyto- use in collapsible aluminum squeeze tubes, caulking cartridges and in bulk containers.
Collapsible aluminum tubes may be squeezed by hand or with the aid of mechanical wringers which allow more complete removal of material from the tube. Air-operated dispensing guns may also be used with aluminum tubes and offer the advantages of improved control and faster application for production line use. The sealant may be dispensed from caulking cartridges by using simple mechanical caulking guns or air-operated guns. Air-operated guns will allow greater control and application speed. Both tubes and cartridges are easy to use, can be put into production quickly and require minimal capital investment.

Note: Do not exceed 45 psig when used in air-powered caulking guns.

Bulk containers require a larger initial investment in dispensing equipment, but offer the most economical packaging for volume production. Bulk dispensing systems are air-operated extrusion pumps coupled to hand or automated dispensing units. Pumps which are specifically designed for pumping one-component RTV silicone rubber have TEFLON® seals, packings and lined hoses to prevent moisture permeation and pump cure problems.

Storage & Handling

Product Safety, Handling and Storage

Customers should review the latest Safety Data Sheet (SDS) and label for product safety information, safe handling instructions, personal protective equipment if necessary, emergency service contact information, and any special storage conditions required for safety. Momentive Performance Materials (MPM) maintains an aroundthe- clock emergency service for its products.For product storage and handling procedures to maintain the product quality within our stated specifications, please review Certificates of Analysis, which are available in the Order Center. Use of other materials in conjunction with MPM products (for example, primers) may require additional precautions. Please review and follow the safety information provided by the manufacturer of such other materials.