LIM™ 8040

Category: Silicone Rubber, LSR , Silicone Rubber, LSR
Manufacturer: Momentive Performance Materials Inc.
Trademark: LIM™
Fillers: -
Ports: Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms FOB, CIF, DAP, DAT, DDP
PDF: k4xGGL_LIM-8040.pdf
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Message
LIM8040 liquid silicone rubber is a 2-component liquid injection moulding material, which offers primerless adhesion to a wide range of substrates including metals and engineering plastics. Full bond strength is reached immediately after de-moulding. This makes LIM 8040 the optimal choice for cost-efficient manufacturing of high numbers of articles in integrated processes such as multicomponent injection moulding or insert-moulding. If properly processed, parts made from LIM 8040 can meet the requirements for food contact. The requirements are determined in 21CFR FDA paragraph 177.2600 'Rubber articles intended for repeated use. It also has been successfully tested for USP class VI. Both applications usually require a postcure.

Key Features and Benefits
  • Primer-less adhesion to many substrates
  • Maximum adhesion immediately after de-moulding
  • High temperature stability
  • Excellent stability and flexibility at low temperatures
  • Outstanding ageing behavior and weathering resistance
  • Good dielectric and mechanical properties
  • Easy pigmentable due to translucent colour

Potential Applications
LIM 8040 is particularly suitable for the manufacturing of parts, where engineering plastics and elastomeric materials need to be combined in an overmolding or co-molding process such as:
  • sealing elements,
  • automotive connectors,
  • membranes,
  • vibration dampening elements
General Information
Features
  • Food Contact Acceptable
  • Good Adhesion
  • Good Colorability
  • Good Thermal Stability
  • Good Weather Resistance
  • Low Temperature Flexibility
Uses
  • Automotive Applications
  • Connectors
  • Membranes
  • Seals
Agency Ratings
  • FDA 21 CFR 177.2600
  • USP Class VI
Forms
  • Liquid
Processing Method
  • Liquid Injection Molding (LIM)
  • Multi Injection Molding
ThermalNominal ValueUnit
Thermal Conductivity 10.19W/m/K
Uncured PropertiesNominal ValueUnit
Color
    -- 2Translucent
    -- 3Translucent
Density
    -- 41.08g/cm³
    -- 51.08g/cm³
Pot Life (20°C)4300min
Cured PropertiesNominal ValueUnit
Shore Hardness
    Shore A 643
    Shore A 746
Tensile Modulus
    100% Secant 81.20MPa
    100% Secant 91.60MPa
Tensile Strength
    -- 105.20MPa
    -- 115.60MPa
Tensile Elongation at Break
    -- 12380%
    -- 13390%
Compression Set
    150°C, 168 hr 1427%
    150°C, 1000 hr 1535%
    150°C, 168 hr 1667%
    150°C, 1000 hr 1776%
Tear Strength
    Die B 1830.2kN/m
    Die B 1937.8kN/m
Electric Strength
    -- 2020kV/mm
    -- 2120kV/mm
Relative Permittivity
    -- 222.85
    -- 232.85
Volume Resistivity
    -- 242.9E+14ohms·cm
    -- 252.9E+14ohms·cm
Dissipation Factor
    -- 263.0E-3
    -- 273.0E-3
Note Message
1 .Postbaked 1 hr @ 177°C (350°F)
2 .Part B
3 .Part A
4 .Part B
5 .Part A
6 .As Molded 30 sec @ 177°C (350°F)
7 .Postbaked 1 hr @ 177°C (350°F)
8 .As Molded 30 sec @ 177°C (350°F)
9 .Postbaked 1 hr @ 177°C (350°F)
10 .As Molded 30 sec @ 177°C (350°F)
11 .Postbaked 1 hr @ 177°C (350°F)
12 .Postbaked 1 hr @ 177°C (350°F)
13 .As Molded 30 sec @ 177°C (350°F)
14 .Postbaked 1 hr @ 177°C (350°F)
15 .Postbaked 1 hr @ 177°C (350°F)
16 .As Molded 30 sec @ 177°C (350°F)
17 .As Molded 30 sec @ 177°C (350°F)
18 .Postbaked 1 hr @ 177°C (350°F)
19 .As Molded 30 sec @ 177°C (350°F)
20 .Postbaked 1 hr @ 177°C (350°F)
21 .As Molded 30 sec @ 177°C (350°F)
22 .Postbaked 1 hr @ 177°C (350°F)
23 .As Molded 30 sec @ 177°C (350°F)
24 .Postbaked 1 hr @ 177°C (350°F)
25 .As Molded 30 sec @ 177°C (350°F)
26 .Postbaked 1 hr @ 177°C (350°F)
27 .As Molded 30 sec @ 177°C (350°F)
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