Difference between MB and MB

In the modern industrial manufacturing, especially in the plastics industry, antioxidants MB and MBZ, as commonly used additives, have attracted much attention because of their role in prolonging the service life of plastics. Due to the significant differences in chemical structure, performance and application range of MB and MBZ, careful analysis is required when selecting. This article will explain the difference between MB and MBZ from multiple perspectives to help chemical industry professionals make scientific decisions.

Basic concepts of 1. antioxidant MB and MBZ

1. anti-aging agent MB:

• MB is called nitrotoluene diethylene glycol poly methyl silicone oil ether, which belongs to poly silicone oil antioxidant.
• Its chemical structure contains silicon oxygen ether groups, which can extend the linear growth of the plastic molecular chain through physical crosslinking, thereby improving the stability and anti-aging effect of the plastic.
• MB is usually used in low molecular weight thermosets and thermoplastics, with good heat resistance and radiation resistance.

1. Anti-aging agent MBZ:

• MBZ is called polyphenyl dimethanol diethyl polymethyl silicone oil ether, which belongs to benzene glycol antioxidant.
• Its structure contains a plurality of benzene two micro ring structure, which can enhance the crosslinking degree of plastic molecular chain through intermolecular hydrogen bonding, so as to provide better anti-aging effect.
• MBZ is mostly used for high molecular weight thermosetting plastics and high-performance plastics, with stronger ozone resistance and radiation resistance.

The main difference between 2. antioxidant MB and MBZ

when comparing MB and MBZ, the following aspects can be analyzed:

1. differences in chemical structure and properties:

• the siloxy ether structure of MB makes it have better heat resistance and radiation resistance, but the resistance to ozone is relatively low.
• The benzenediol structure of MBZ makes it perform better in high temperature and ozone environments, but it is slightly less resistant to radiation.

1. Scope of application:

• MB is more suitable for low and medium molecular weight thermosetting plastics and thermoplastics, such as extrusion and injection molding plastics.
• MBZ is mostly used for high molecular weight thermosetting plastics and high-performance plastics, such as electronic grade plastics, food grade plastics, etc.

1. crosslinking ability:

• MB is physically cross-linked through silicone ether groups, which is less cross-linked, but can effectively extend the service life of the plastic.
• MBZ is crosslinked by intermolecular hydrogen bonds and benzene glycol structure, and the degree of crosslinking is higher, and the performance is better at high temperature.

1. Cost and Selectivity:

• the price of MB is relatively low, the selectivity is good, and it is suitable for the production link with limited budget.
• MBZ has a higher cost, but its performance advantages make it an ideal choice for high-end plastic production and precision parts manufacturing.

The 3. of the choice of antioxidant recommendations

in practical application, the choice of antioxidant MB or MBZ, need to consider the following factors:

1. plastic Type:

• if it is a low molecular weight thermoset or thermoplastic, MB is a better choice.
• For medium and high molecular weight thermosetting plastics or high performance plastics, MBZ is more suitable.

1. Working environment requirements:

• if the plastic needs to be used in high temperature or ozone environment, the choice of MBZ is more appropriate.
• If the plastic has high requirements for radiation resistance, MBZ can be given priority.

1. Production Scale and Budget:

• MB low cost, suitable for initial input and small batch production.
• MBZ has a higher cost and is suitable for high-end production or mass production.

4. Summary

there are significant differences in anti-aging effect, chemical structure and application range between MB and MBZ. Choosing the right antioxidant needs to be weighed according to the actual situation such as plastic type, working environment and production scale. By deeply understanding the characteristics of MB and MBZ, chemical industry professionals can better optimize the performance of plastic products, extend the service life of plastics, and improve production efficiency.