Property and product selection depending on material utilization
Required features
| Required features |
| SOFTNESS, LOW LOAD DEFLECTION(Deasy to open and close door) |
| Blocking outside noise |
| GOOD COMPRESSION SET - shape maintenance |
| SMOOTH SPONGE SKIN - satisfactory exterior |
| Low absorption rate |
| Cold-resistance |
| Duration of abrasion |
| Easiness for self-mounting |
| Non-contaminating (non-contaminating against chassis paint) |
Polymer selection criteria
| Polymer selection criteria |
| High Mooney viscosity: High charging and shape-maintenance |
| High propylene content: excellent cold-resistance |
| High diene content: fast speed of vulcanization in case of continuous vulcanization |
| Low compound Mooney viscosity : excellent pressing feature |
| Broad to tailored distribution of molecules: excellent processing ability and maintenance of pressed shape |
Recommended product
KEP330
KEP350
KEP370F
KEP650(L)
KEP2480
KEP9590
KEP9570E
KEP8512
Required features
| Required features |
| Weatherability, ozone-resistance and heat-resistance |
| Water-resistance |
| Satisfactory mechanical property of matter and shape-maintenance |
| Excellent pressing feature (productivity) |
| High-charging (cost down) |
| Non- contaminating (non-contaminating against chassis paint) |
Polymer selection criteria
| Polymer selection criteria |
| High Mooney viscosity: High charging, low cost and excellent property of matter shape-maintenance for high-charging |
| Medium to high diene content: fast speed of vulcanization |
| HIGH GREEN STRENGTH |
| Broad to tailored distribution of molecules: excellent processing ability and maintenance of pressed shape |
Recommended product
KEP1030F
KEP2371
KEP281F
KEP282F
KEP240
KEP270
KEP570F
KEP5770
KEP2380
KEP6590
KEP8512
KEP9590
Required features
| Required features |
| Heat-resistance |
| Fatigue resistance |
| Cold resistance |
| Air-penetration resistance |
| Ozone-resistance |
| Scorch stability |
Polymer selection criteria
| Polymer selection criteria |
| Low diene content: vulcanization feature and scorch stability when vulcanizing blend with IIR |
| Satisfactory processing ability and dispersion feature |
| Low Mooney viscosity: added excellent adhesion feature when blending with IIR |
| High propylene content: excellent low-temperature feature |
Recommended product
KEP435
KEP430H
Required features
| Required features |
| Heat-resistance and durability |
| Fatigue resistance |
| Pressure resistance |
| Cold-resistance |
| High-charging |
| Satisfactory processing ability |
Polymer selection criteria
| Polymer selection criteria |
| High Mooney viscosity: excellent property of matter with high-charging, fatigue-resistance and shape-maintenance features |
| High green strength |
| Medium to high propylene content: excellent cold-resistance |
| Medium diene content: heat-resistance and balance of vulcanization speed |
Recommended product
KEP570F
KEP1030F
KEP2380
KEP6590
KEP8512
KEP281F
KEP282F
KEP2371
KEP960N
KEP980N
Required features
| Required features |
| Electricity insulation feature |
| Satisfactory elasticity |
| Ozone-resistance and corona resistance |
| Excellent pressing ability |
| Heat-resistance and cold-resistance |
| Low deformation |
Polymer selection criteria
| Polymer selection criteria |
| Low Mooney viscosity: excellent processing ability and pressing feature |
| Broad distribution of molecule: maintaining excellent processing ability |
| High ethylene content: excellent pressing ability and peroxide vulcanization effect improvement |
Recommended product
KEP210
KEP510
KEP2320
KEP570F
KEP5770
KEP7141
Required features
| Required features |
| Brake fluid resistance |
| No negative volume change |
| Excellent heat-resistance - application of peroxide vulcanization |
| Measures stability |
| Adhesion ability with metal |
| Pressing and stress relief features |
| Excellent low deformation |
| Application of peroxide vulcanization and oil-free compound |
Polymer selection criteria
| Polymer selection criteria |
| Low Mooney viscosity & broad molecule distribution: excellent roll processing ability |
| It is essential to have polymer with excellent roll processing ability to have polymer rich compound for improvement of internal brake fluid feature (low negative volume change), non-added material compound and excellent heat-resistance |
Recommended product
KEP210
KEP510
KEP2320
KEP7141
KEP570F
KEP330
Required features
| Required features |
| Excellent low deformation and creep resistance feature |
| Excellent heat-resistance |
| Fatigue resistance |
| Adhesion ability with metal |
| Excellent mechanical strength and resistant elasticity |
| Durability and processing ability |
Polymer selection criteria
| Polymer selection criteria |
| Ultra high Mooney viscosity |
| It is essential to select product with very high Mooney viscosity to maintain fatigue resistance, excellent mechanical property of matter and resistant elasticity with high-charging compounds |
| Medium diene content: heat-resistance and balance of vulcanization speed |
| Narrow to medium distribution of molecule |
Recommended product
KEP960
KEP650
KEP901
KEP902N
KEP980N/KEP570F
KEP902N/KEP570F
KEP901/KEP570F
Required features
| Required features |
| Weatherability, ozone-resistance and heat-resistance |
| Heat-resistance and water-resistance |
| Satisfactory mechanical property of matter |
| Excellent pressing feature (productivity) |
| High-charging |
| Calender processing ability |
Polymer selection criteria
| Polymer selection criteria |
EPDM and IIR Blend (*IIR: Isobutylene-isoprene rubber)
Select low-diene content grade considering vulcanization feature with IIR
Low Mooney viscosity: securing adhesion ability when blending IIR |
EPDM exclusive
Select high Mooney viscosity and high ethylene content grade that indicate satisfactory mechanical property of matter for high-charging |
Recommended product
EPDM/IIR BLEND :
KEP435
KEP430H
EPDM :
KEP570F
KEP1030F/KEP210
