Understanding Filled Masterbatch: Benefits, Techniques, And Dosage Guidelines

Understanding Filled Masterbatch: Benefits, Techniques, and Dosage Guidelines

Filler masterbatch refers to the plastic processing and molding process, in order to operate the convenience of the required various additives, fillers and a small amount of carrier resin is first mixed and blended, the resulting granules and powders are called masterbatch. The main component of the filler masterbatch is the filler, which is mainly used in the processing and molding of polyolefin (polyethylene and polypropylene), and is also called polyolefin filler masterbatch.

Advantages of filler masterbatch

1. Reduce the cost, this is the most manufacturers choose the reason.

2. Reduce product shrinkage, with this performance to choose the manufacturers also accounted for a lot of the proportion, for example: PP shrinkage rate is large, to do a reinforcement of succulent wall thickness of the product, in general, the surface will produce shrinkage indentation, affecting the aesthetics of the product, the choice to add filler can effectively reduce shrinkage, so that the surface of the product has been greatly improved in terms of flatness.

3. Increase the specific gravity, with this reason to choose the manufacturer is relatively not a lot, especially the product to the portion to sell may be more points, in fact, this is also disguised as a way to reduce costs only.

4. Increase the hardness of the product, generally such manufacturers recommend the use of talc filler masterbatch, can increase the hardness of about 20%, such manufacturers are still quite a lot.

Disadvantages of filler masterbatch

1. Affect product quality, mainly refers to the toughness.

2. Increases the specific gravity of the product.

3. Affect the color of the product, even if it is transparent filler masterbatch, it is more or less can affect the transparency, the more you add the greater the impact, the thicker the product the greater the impact.

Roughly these, mainly depends on the product and how to choose what kind of filler masterbatch.

Composition of filler masterbatch

Polyolefin filler masterbatch is composed of carrier resin, filler and various additives, of which the filler accounts for the main component, up to 90%.

1. Filler: the filler used in polyolefin filler masterbatch is mainly heavy calcium carbonate, followed by talc, kaolin, calcium powder and other inorganic fillers. For any inorganic filler, particle size and particle size distribution are important technical indicators. Usually the smaller the particle size and the narrower the distribution, the better the filling effect. In addition, the filling effect is also related to the dispersion, the smaller the particle size, the more difficult to disperse, the higher the price.

2. Carrier resin: polyolefin filler masterbatch performance and cost mainly depends on the carrier resin, usually according to the different uses of the masterbatch, carrier resin general content of 10% to 20%. The carrier resin used for polyolefin filled masterbatch should have good compatibility with the plastic matrix resin filled. From this aspect, the carrier resin is generally preferred to the base resin. In addition, the choice of filler masterbatch carrier, but also consider its melting point and melt fluidity, carrier resin melting point shall not be higher than the base resin.

3. Additives: polyolefin filler masterbatch using additives are mainly dispersants and surface treatment agents. The role of the dispersant is to improve the fluidity of the masterbatch processing, which is conducive to the masterbatch in the matrix resin more evenly dispersed. Commonly used dispersants are: white oil, paraffin, polyethylene wax, coupling agent and stearic acid.

Filler masterbatch processing technology

Polyolefin filler masterbatch processing technology and related equipment with the continuous change of carrier resin also changed.

The first generation: polyolefin filler masterbatch (APP masterbatch) carrier resin is domestic random polypropylene (actually the production of polypropylene by-products), the processing technology is: mixing - opening and pulling - water-cooled cutting granules, for intermittent production, the use of equipment are Dense refining machine, open refining machine and flat cutting machine.

The second generation: polyolefin filled masterbatch is LDPE (1F7B) as the carrier resin, the production of masterbatch called PEP masterbatch. The process must use a specially designed and manufactured single screw extruder with a large aspect ratio and high mixing performance to obtain better results.

The third generation: polypropylene powder as the carrier of the filler masterbatch, i.e. PPM masterbatch is called the third generation of filler masterbatch in China. The general use of polypropylene and polyethylene copolymer blends as a carrier resin approach, the effect will be very good. The product not only maintains the characteristics and scope of use of PPM masterbatch, but also can be used in the mold surface hot-cutting air-cooled process to improve production efficiency and reduce the cost of raw materials.

The best processing equipment for making filler masterbatch is co-rotating twin-screw extruder. The advantages of this machine are continuous production, stable quality, high production efficiency, low energy consumption, low labor intensity of workers, good operating environment.

Filler masterbatch in the application of the recommended amount of product additives

The above is the reference ratio of some regular products, the specific needs to depend on the product requirements and the quality of the filler masterbatch good or bad.

In the process of plastics processing, in addition to the application of filler masterbatch, the addition of flame retardant is also a key part of improving the safety of materials. In the formulation of flame retardants, adding a certain proportion of fillers can not only reduce the cost, but also improve the cost-effectiveness of the product. However, the proportion and type of fillers added have a significant impact on the performance of the final product, which requires a high level of technology and precise formulation design.

As a professional flame retardant supplier, YINSUs Flame Retardant Company is always committed to providing customers with efficient and cost-effective solutions. We do not only pursue cost reduction by adding fillers, but also focus on R&D and innovation to develop economical and efficient flame retardant products by combining with customers' needs. We believe that only by continuously optimizing the performance of our products can we truly meet the needs of the market and our customers and achieve sustainable development.

Welcome to contact us to learn more about YINSU flame retardants and discuss how to improve your product safety and market competitiveness.