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Core Features

By using glass fiber reinforcement, inorganic filler filling, nucleating agents or crosslinking modification, the thermal deformation temperature and long-term use temperature limit of PP can be increased. The conventional PP hot deformation temperature (1.8MPa) is about 60-70 ℃, and after heat-resistant modification, it can be increased to 110-155 ℃. The surrounding components of the car engine compartment require materials to be stable for a long time in an environment of 120 ℃.

Mainstream solution

Fiberglass reinforcement is the most important heat-resistant modification method, and the addition of fiberglass significantly improves material rigidity and thermal deformation temperature. Inorganic fillers (talc powder, basic magnesium sulfate whiskers) combined with special additives can also effectively improve heat resistance. Nucleating agent modification improves heat resistance by promoting PP crystallization, while alpha nucleating agent mainly enhances rigidity, and beta nucleating agent focuses on improving toughness.

Key data

-Talc powder filling 40%: hot deformation temperature (0.46MPa) 132 ℃
-Fiberglass reinforcement 30%: Hot deformation temperature (1.8MPa) 150 ℃
-Heat resistant special material: Hot deformation temperature of 115 ℃, Vicat softening point of 158 ℃

Typical Applications

Surrounding components of car engine compartment (lamp holder, fan cover, water tank), relay housing, circuit breaker components, rice cooker housing, microwave oven components, and components near steam pipes.