Application characteristics of lithopone in the plastics industry


Lide powder, also known as lithopone, plays a significant role not only in the coatings industry but also in the plastics sector. Its versatility and unique properties make it a valuable additive across various applications. Let's explore the key roles that Lide powder can play in the plastics industry.

Lithopone is one of the most widely used white pigments, ranking just below titanium dioxide in popularity. As a multifunctional pigment, it offers both a white and blue shade, making it ideal for color toning. It works well with fluorescent whitening agents and provides characteristics that other white pigments cannot match in plastic products.

**First, Glass Fiber Reinforced Plastics**

One of the main advantages of Lide powder is its low Mohs hardness of around 3. This makes it highly suitable as a white pigment for glass fiber-reinforced plastics. Unlike titanium dioxide, which can damage the reinforcing fibers during processing, Lide powder does not compromise the mechanical strength of the final product. As a result, it helps maintain or even enhance the bending and impact resistance of the material.

**Second, Excellent Flexibility**

Due to its soft texture and lack of photocatalytic activity—unlike TiO2—Lide powder is an excellent choice for coloring and opacifying natural and synthetic elastomers. This leads to reduced wear and tear, resulting in longer-lasting products. For example, soles made with Lide powder-based white elastomers tend to have a significantly longer service life compared to those using TiO2.

**Third, Thermoplastics Applications**

In addition to its use in elastomers, Lide powder is also applied as a stabilizer in certain thermoplastics, especially polypropylene (PP) and polybutylene terephthalate (PBT). It enhances the thermal stability of these polymers, although the exact mechanism is not fully understood. However, it is believed that Lide powder reacts with catalytic metal ions, forming stable complexes that prevent them from degrading the polymer structure. This "fixing effect" contributes to improved performance and durability.

Whether you're working with reinforced plastics, flexible materials, or thermoplastic resins, Lide powder offers a range of benefits that can enhance product quality and longevity. If you're looking for high-quality pigments and additives for your plastic manufacturing process, consider reaching out to experts in the field.

Langfang Rainbow Pigment Products Co., Ltd.: http://

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(1) Diamond pen dressing grinding wheel: According to the size of diamond particles and their distribution in the pen, diamond pens can be divided into several types, such as chain and powder. The alloy with strong bonding force is used as the bonding agent, so the diamond grinding wheel particles are not easy to fall off during use, so there is no need to repair the grinding process.

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Make the abrasive particles fall off. The grinding wheel dressing by rolling method has better cutting performance and lower cost, but the surface roughness of the grinding part is rougher and rolling

Damage, short life, easy loss of precision. Therefore, this dressing method is mainly used for forming grinding with small batch size and low precision.

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