Silicone Resins (siblings)
MQ vs T Silicone Resin — When to Choose Which
MQ and T-type silicone resins are the two dominant structural archetypes but serve entirely different functions: MQ resins are tack-providing soft networks for PSA and tackifier applications, while T-resins are hard, highly-crosslinked networks for high-temperature coatings and electrical varnishes. This comparison clarifies the decision based on application temperature, required tack, and cure system.
Specifications
| MQ — Structure | M + Q units; spherical caged network; soft, tacky |
| MQ — Heat Resistance | 150–200 °C max service temperature |
| MQ — Tack | High tack — primary PSA resin, Tg below room temp |
| T — Structure | T (tri-functional) units; ladder network; hard brittle film |
| T — Heat Resistance | 350 °C continuous / 600 °C intermittent |
| T — Tack | Near zero tack — hard thermoset, not pressure-sensitive |
Applications
- Choose MQ: silicone PSA formulation (medical tape, electronics masking)
- Choose MQ: rubber tackifier and reinforcing resin (HTV silicone rubber)
- Choose MQ: cosmetic stick structure (lipstick, deodorant, antiperspirant)
- Choose T (methyl): high-temperature coating (chimney, exhaust, oven >250 °C)
- Choose T (methyl-phenyl): electrical insulating varnish (Class H/N motor)
- Choose MDT: silicone PSA requiring higher peel and shear than MQ
Key Features
- Quick rule: need tack → MQ/MDT; need heat resistance → T
- MQ: soft (Tg < 0 °C), tacky, for PSA / cosmetic / tackifier
- T: hard (Tg 80–120 °C), brittle film, for coating / varnish
- Above 200 °C: T wins unconditionally — MQ softens and flows
- PSA applications always use MQ or MDT — T has near-zero peel
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Types Compared
MQ / MDT vs T (Methyl / Methyl-Phenyl)
Content Type
Selection Comparison
Availability
In Stock