LIGHT WELD 401

OPTICALLY CLEAR, STRUCTURAL ADHESIVE

Low ViscositY - Metal to Glass

DESCRIPTION

Light Weld 401 is a low viscosity, high clarity UV curing adhesive with excellent adhesion to glass and metal. The product is well suited for bonding close fitting parts and has very good moisture resistance.

UNCURED PROPERTIES

Chemical Class Urethane Oligomer/(Meth) Acrylate Monomer Blend

AppearanceClear

SolubilityAlcohols/Chlorinated Solvents

ToxicityLow

Flash Point>95C

Viscosity70 mPas (nominal)ASTM D-1084

CURED PROPERTIES

PHYSICAL

Durometer HardnessD80ASTM D-2240

Elongation at Break8%ASTM D-638

Tensile at Break45,54 N/mm2 ASTM D-638

Water Absorption (24 h)0.8%ASTM D-570

Boiling Water Absorption (2 h)2.0%ASTM D-570

Coefficient of thermal Expansion164 x 10-6 1/KASTM D-696

Refractive Index1.51ASTM D-1218

Linear Shrinkage on Cure3.1%ASTM D-2566

ELECTRICAL

Dielectric Strength22,4 kV/mmASTM D-1304

Surface Resistivity8.84 x 1013ASTM D-1304

CURE DATA

Cure TimeIntensityDymax Light-Welder®

secondsmW/cm2Lamps

Fixture Time between glass5202000-EC

Depth of Cure (6,4 mm)202005000-EC

FACTORS AFFECTING CURING

Dark surfaces lengthen cure time.

Full range (UV-A, B & C) lamps provide faster cures than filtered sources.

All UV sources degrade with use. Check output with a radiometer.

Thicker films require longer cures.

Light intensity decreases as distance from UV source increases.

Some clear plastics may contain UV inhibitors.

DISPENSING AND HANDLING ADHESIVE

Dymax 401 is available in various packages such as syringes, cartridges, bottles, and pails. It may be dispensed with a variety of automatic bench-top syringe applicators or other equipment as required. Direct questions relating to dispensing and curing systems for specific applications to Dymax Technical Representatives.

Wear impervious gloves and/or barrier cream. Repeated or continuous skin contact with liquid adhesive will cause irritation and should be avoided. Do not wear absorbent gloves. Remove adhesive from skin with soap and water. Never use solvents to remove adhesive from skin or eyes.

STORAGE AND SHELF LIFE

Store material in cool dark place when not in use. Do not expose to UV light or sunlight. Material may polymerize upon prolonged exposure to ambient light. Replace lid immediately after use. Product has a one-year shelf life when stored below 32C in the original, unopened container. Refrigerated storage extends shelf life.

CAUTION

For industrial use only. Avoid breathing vapors. Avoid contact with eyes and clothing. In case of contact, immediately flush with water for at least 15 minutes; get medical attention. Wash clothing before reuse. Keep out of reach of children. Do not take internally. If swallowed, induce vomiting at once and call a physician. Repeated or continuous skin contact with liquid adhesive will cause irritation and should be avoided. For specific information, refer to the product Material Safety Data Sheet.

Distributed by: DYMAX Europe GmbH

Trakehner Str. 3

60487 Frankfurt/Main

Phone: +49-(0)69-7165-3568

Fax: + 49-(0)69-7165-3830

e-mail:

Internet:

The data contained in this bulletin represents typical results, is furnished for information only and is believed reliable. We cannot assume responsibility for results obtained by others over whose methods we have no control. It is the user's responsibility to determine suitability for the user's purpose of any product or method mentioned herein and to adopt such precautions as may be advisable for the protection of property and persons against any hazards that may be involved in the handling and use thereof. Nothing in this bulletin is to be interpreted as a representation of freedom from domination of patents owned by others or a license under a Dymax Corporation patent. We recommend that each prospective user test the proposed application before repetitive use, using the data as a guide. 401/12/98