3.5-Hydrate Zinc Borate vs. Anhydrous Zinc Borate

Zinc borate can be classified into 3.5-hydrate zinc borate and anhydrous zinc borate based on the content of crystalline water. Although both belong to the zinc borate family, they exhibit significant differences in various dimensions and play unique roles in their respective fields of application.

1. Chemical composition, different crystalline water content:

In appearance, both are white powders, but their internal crystal structures and surface properties differ due to the presence or absence of crystalline water. For example, anhydrous zinc borate may have a higher thermal conductivity, standing out in thermal conduction applications. 3.5-hydrate zinc borate contains 3.5 molecules of crystalline water, while anhydrous zinc borate does not contain crystalline water. The differences in their chemical structures determine their different applications.

2. Physical properties, significant differences in thermal stability:

Due to the presence of crystalline water, 3.5-hydrate zinc borate has a relatively low thermal decomposition temperature, and the release of crystalline water can affect its structural stability when heated.

Anhydrous zinc borate is a "little expert" in heat resistance, with less than 1% weight loss at 400°C and can remain stable at 600°C, easily meeting the challenges of high-temperature processing.

3. Application fields:

3.5-hydrate zinc borate excels in the field of materials processed at lower temperatures. In the ordinary plastic and rubber industries, 3.5-hydrate zinc borate is used as a synergistic additive with antimony oxide and other flame retardants, which can enhance flame retardancy, reduce smoke, and adjust the physical, mechanical, and electrical properties of the product. 3.5-hydrate zinc borate also plays a significant role in the production of paper, textiles, and ceramic glazes, endowing products with fire and insect resistance.

Anhydrous zinc borate, with anhydrous zinc borate's high heat resistance, performs excellently in high-temperature processing materials. Anhydrous zinc borate can ensure the flame retardancy of materials at high temperatures in high-temperature nylon, polyester, polyether ketone, and other polymer systems. Due to anhydrous zinc borate's excellent thermal conductivity, anhydrous zinc borate has also successfully entered high-tech fields such as spacecraft, aiding the development of cutting-edge technology.

4. Production costs and market prices are also different:

The production process of 3.5-hydrate zinc borate is relatively simple, does not require complex dehydration processes, and has a cost-effective price, showing 3.5-hydrate zinc borate's advantages in price-sensitive application scenarios. Anhydrous zinc borate, on the other hand, has higher production costs due to strict high-temperature dehydration processes, and market prices are also rising.

As the requirements for material performance in various industries continue to increase, a deep understanding of the differences between 3.5-hydrate zinc borate and anhydrous zinc borate will provide strong support for material selection and application innovation, helping industries move towards a new era of high-quality development.

Aosen New Material is a professional and reliable supplier of Zinc Borate 3.5-Hydrate and Anhydrous zinc borate. Aosen provides customers with high-quality Zinc Borate 3.5-Hydrate and Anhydrous zinc borate at reasonable prices, feel free to contact us for samples!