Petroleum resin

The hardness performance of petroleum resin mainly depends on its softening point and specific application fields and requirements. The following is a detailed analysis of the hardness performance of petroleum resin:

1. Relationship between softening point and hardness

The softening point of petroleum resin is an important indicator for measuring its hardness, brittleness, and viscosity. The higher the softening point, the greater the hardness. The softening point range varies for different purposes:
The softening point of petroleum resins used in the rubber industry is generally between 70 ℃ and 100 ℃, but higher or lower softening points can also be selected according to specific needs.

The softening point used in the paint and coating industry is usually between 100 ℃ and 120 ℃ to ensure that the coating has good hardness and weather resistance.

2. Hardness performance of petroleum resin in different application fields

1. Rubber industry:
Adding it to rubber can have the effects of increasing viscosity, strengthening, and softening. Especially the addition of C5/C9 copolymer resin can increase the adhesion between rubber particles and improve the hardness of rubber products. The hardness performance of petroleum resin makes it suitable for high demand rubber products such as radial tires.
2. Ink industry:
Adding petroleum resin to ink can achieve color development, fast drying, and brightening effects, while also improving printing performance. Although hardness is not the main performance indicator of ink, adding it helps to form a harder and more wear-resistant ink layer.
3. Paint industry:
Adding paint can increase its glossiness, improve film adhesion, hardness, and chemical resistance. The hardness performance of petroleum resin makes paint coatings more robust and durable.
4. Other fields:
It can also be used to manufacture road marking paint, bridge anti-corrosion coatings, etc. In these applications, its hardness performance helps to form durable and wear-resistant coatings. In addition, petroleum resin can also be used as an additive in automotive coatings to improve their weather resistance and chemical resistance, protecting the surface of the car from harsh environmental erosion.
In summary, the hardness performance of petroleum resins varies depending on their softening point, application areas, as well as differences in raw materials and production processes. In specific applications, it is necessary to select the appropriate type and hardness performance of petroleum resin according to actual needs.