Silicone Masterbatches
Silicone Masterbatch
Bajaj Plast Silicone masterbatch series are pelletized formulation with ultra-high molecular weight siloxane polymer as the function part and different thermoplastic resins as the carrier, when used in the carrier compatible system, processing properties and pro-ducts surface quality can be effective improved
Better processing properties including better flow ability, reduce the extrusion die drool, less torque, improve the mold filling and release properties;
Typical performances
Better surface quality like slip surface, lower coefficient of friction, greater abrasion & scratch resistance;
Faster throughput, less product defect rate & Better stability than traditional processing aids
Silicone masterbatch is a kind of additive in the rubber and plastic industry. The advanced technology in the field of silicone additives is the use of ultra-high molecular weight (UHMW) silicone polymer (PDMS) in various thermoplastic resins, such as LDPE, EVA, TPEE, HDPE, ABS, PP, PA6, PET, TPU, HIPS, POM, LLDPE, PC, SAN, etc. And as pellets so as to allow easy addition of the additive directly to the thermoplastic during processing. combining excellent processing with an affordable cost. The silicone masterbatch is easy to feed, or mix, into plastics during compounding, extrusion, or injection molding. It is better than traditional wax oil and other additives in improving slippage during production. Thus, plastic processors prefer to use them in the output.
Roles of Silicone
Masterbatch additive in Improving Plastic Processing
The silicone masterbatch is one of the most popular choices for processors in plastic processing and surface quality improvements. As a kind of super lubricant. It has the following main functions when used in thermoplastic resin:
Improve the flow of resin and processing
Better mould filling and mould release properties
Reduce the extrude torque and improve the extrusion rate
Improves resin’s surface properties
Improve the plastic surface finish, smooth degree, and reduce the skin friction coefficient, Improve the wear resistance and scratch resistance;
And silicone masterbatch has good thermal stability and non-migration;
Effects on Final products
Due to the characteristics of the molecular structure of siloxane, the dosage is very small so on the whole almost no effects on the mechanical property of the final products. generally speaking, except elongation and impact strength will increase slightly, with no effects on other mechanical properties. At a large dosage, it has a synergistic effect with flame retardant agents.
Due to its outstanding performance on high and low-temperature resistance, it will no side effects on the high and low-temperature resistance of the final products. while the flow of resin, processing, and surface properties will be improved obviously and the COF will be reduced.
Action mechanism
Silicone masterbatches are ultra-high molecular weight polysiloxane dispersed in different carrier resins which is a kind of function masterbatch. When ultra-high molecular weight silicone masterbatches are added into plastics for their nonpolar and with low surface energy, it has a trend to migrate to the plastic surface during the melting process; while, since it has a large molecular weight, it can’t move out completely. So we call it harmony and unity between migration and non-migration. due to this property, a dynamic lubrication layer formed between the plastic surface and the screw.
With processing keep going on, this lubrication layer is constantly being taken away and produced. So the flow of resin and processing are getting improved constantly and reducing electric current, equipment torque and improving the output. After the processing of twin-screw, silicone masterbatches will be evenly distributed in plastics and form a 1 to 2-micron oil particle under the microscope, those oil particles will offer the products a better appearance, nice hand feeling, lower COF, and greater abrasion and scratch resistance.
From the picture we can see that silicone will become small particles after being scattered in plastics, one thing we need to point out is that dispersibility is the key index for silicone masterbatches, the smaller of the particles, the more evenly distributed, the better result we will get.
Environmental protection & Safety contact with the food.
Silicone Masterbatch ( Siloxane Masterbatch ) is a pelletized formulation with 20~65% ultra high molecular weight siloxane polymer dispersed in various resin carrier. It is widely used as an efficient processing additive in it’s compatible resin system to improve the processing properties and modify surface quality.
Compare to conventional lower molecular weight Silicone / Siloxane additives,like Silicone oil, silicone fluids or other type processing aids, Bajaj Silicone Masterbatch are expected to give improved benefits, eg,. Less screw slippage , improved mold release, reduce die drool, a lower coefficient of friction, fewer paint and printing problems, and a broader range of performance capabilities.
Silicone Masterbatch Application
Detailed Applications & Industry Usage
Film & Flexible Packaging
Injection Molding
Blow Molding
Extrusion & Thermoforming
Automotive Industry
Electrical & Electronics
Fibers & Nonwovens
Engineering Plastics
High-Performance Additives for Enhanced Processing & Surface Properties
Key Technical Benefits
Key Technical Features
Processing Aid
Enhances melt flow, reduces extruder torque, and minimizes die buildup.
Slip Modifier
Lowers Coefficient of Friction (CoF) between film surfaces and with metal rollers.
Mold Release Agent
Reduces part sticking during injection molding, enabling faster cycle times.
Surface Modifier
Provides silky smooth feel, scratch resistance, and glossy finish.
Anti-Scratch
Improves durability of high-gloss plastic surfaces.
Non-Migrating & Stable
Does not bloom like traditional amide-based slip agents.
Thermal Resistance
Withstands processing temperatures up to 300°C, suitable for engineering plastics.
Transparency-Friendly
Maintains clarity in transparent applications like films, bottles, and sheets.
Low VOC Emission
Environmentally friendly and suitable for sensitive applications (e.g., automotive interiors).
Food Contact Grades Available
Compliant with FDA food safety standards.
