乐泰胶水 498 原装1LB乐泰代理商

　　具体价格请来电洽谈

　　乐泰 498

　　包装规格：1LB瓶装

　　主要粘贴材料：金属，塑料，橡胶

　　颜色：透明，无色至淡黄

　　类型：乙基

　　粘度：400/600

　　固化速度：25秒/24小时

　　剪切强度：19

　　相对密度：1.1

　　LOCTITE® 498 provides the following product characteristics:

　　Technology Cyanoacrylate

　　Chemical Type Ethyl cyanoacrylate

　　Appearance (uncured) Transparent, colorless to pale

　　yellow liquidLMS

　　Components One part - requires no mixing

　　Viscosity Medium

　　Cure Humidity

　　Application Bonding

　　Key Substrates Rubbers, Plastics and Metals

　　LOCTITE® 498 is a general purpose adhesive suitable for

　　applications where heat resistance is required. LOCTITE® 498

　　is formulated to resist thermal cycling and also exhibits

　　superior resistance to humidity.

　　TYPICAL PROPERTIES OF UNCURED MATERIAL

　　Specific Gravity @ 25 °C 1.10

　　Viscosity, Brookfield - LVF, 25 °C, mPa·s (cP):

　　Spindle 2, speed 30 rpm 400 to 600LMS

　　Flash Point - See MSDS

　　TYPICAL CURING PERFORMANCE

　　Under normal conditions, the atmospheric moisture initiates the

　　curing process. Although full functional strength is developed

　　in a relatively short time, curing continues for at least 24 hours

　　before full chemical/solvent resistance is developed.

　　Cure Speed vs. Substrate

　　The rate of cure will depend on the substrate used. The table

　　below shows the fixture time achieved on different materials

　　at 22 °C / 50 % relative humidity. This is defined as the time to

　　develop a shear strength of 0.1 N/mm2.

　　Fixture Time, ISO 4587, seconds:

　　Steel (degreased) 20 to 30

　　Aluminum 2 to 10

　　ABS 5 to 10

　　Phenolic 10 to 20

　　Cure Speed vs. Bond Gap

　　The rate of cure will depend on the bondline gap. Thin bond

　　lines result in high cure speeds, increasing the bond gap will

　　decrease the rate of cure.

　　Cure Speed vs. Activator

　　Where cure speed is unacceptably long due to large gaps,

　　applying activator to the surface will improve cure speed.

　　However, this can reduce ultimate strength of the bond and

　　therefore testing is recommended to confirm effect.

　　TYPICAL PROPERTIES OF CURED MATERIAL

　　After 24 hours @ 22 °C

　　Physical Properties:

　　Coefficient of Thermal Expansion, ASTM 696, K-1 80×10-6

　　Coefficient of Thermal Conductivity, ASTM C 177,

　　W/(m·K)

　　0.10

　　Glass Transition Temperature, ASTM E 228, °C 120

　　Electrical Properties:

　　Dielectric Constant / Dissipation Factor, ASTM 150:

　　0.05-kHz 2.30 / 1-kHz 2.30 / 1,000-kHz 2.30 / Volume Resistivity, ASTM 257, Ω·cm 10×1015

　　Dielectric Breakdown Strength, ASTM 149, kV/mm 25

　　TYPICAL PERFORMANCE OF CURED MATERIAL

　　Adhesive Properties

　　Cured for 24 hours @ 22 °C

　　Lap Shear Strength, ISO 4587:

　　Steel (grit blasted) N/mm2 19

　　(psi) (2,755)

　　Polycarbonate N/mm2 10

　　(psi) (1,450)

　　Phenolic N/mm2 10

　　(psi) (1,450)

　　Cured for 24 hours @ 22 °C, followed by 24 hours @ 121 °C,

　　tested @ 121 °C

　　Lap Shear Strength, ISO 4587:

　　Steel (grit blasted) N/mm2 ≥6.90LMS

　　(psi) (≥1,000)

　　Cured for 2 minutes @ 22 °C

　　Lap Shear Strength, ISO 4587:

　　Steel (grit blasted) N/mm2 ≥4.80LMS

　　(psi) (≥695)

　　GENERAL INFORMATION

　　This product is not recommended for use in pure oxygen

　　and/or oxygen rich systems and should not be selected as

　　a sealant for chlorine or other strong oxidizing materials.

　　For safe handling information on this product, consult the

　　Directions for use

　　1. For best performance bond surfaces should be clean and

　　free from grease.

　　2. This product performs best in thin bond gaps (0.05 mm).

　　3. Excess adhesive can be dissolved with Loctite cleanup

　　solvents, nitromethane or acetone.

　　Loctite Material SpecificationLMS

　　LMS dated November-19, 2002. Test reports for each batch

　　are available for the indicated properties. LMS test reports

　　include selected QC test parameters considered appropriate to

　　specifications for customer use. Additionally, comprehensive

　　controls are in place to assure product quality and

　　consistency. Special customer specification requirements may

　　be coordinated through Henkel Loctite Quality.

　　Storage

　　Store product in the unopened container in a dry location.

　　Storage information may be indicated on the product container

　　labeling.

　　Optimal Storage: 2 °C to 8 °C. Storage below 2 °C or

　　greater than 8 °C can adversely affect product properties.

　　Material removed from containers may be contaminated during

　　use. Do not return product to the original container. Henkel

　　Corporation cannot assume responsibility for product which

　　has been contaminated or stored under conditions other than

　　those previously indicated

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