In certain instances, the manufacturer wishes to compound the modification into the raw material in bulk form. Sometimes it is desirable for the substrate activator and monomer system to be incorporated into the matrix of the substrate. The plastic additive is to be blended with the pellets or resin and will be adjusted to the manufacturers’ extruding or molding process. These plastic additives typically add on approximately 1-5% to resin. In this case, the chemical grafting reaction takes place when the heat is introduced during the extruding or molding process. Besides the introduced modification, there is no effect on the material or the
existing processing parameters.
Our specialists have a deep understanding of both raw materials and production processes. Their focus is effective and efficient solutions to help you reduce costs and generate added value.
Our innovations are based on effective and efficient research & development. We helped hundreds of companies, ranging from start-ups to Fortune 500 corporations, to improve their materials and products. Our chemists work in interdisciplinary groups on innovative processes to ensure long-term business success for our clients with chemically grafted solutions for almost all sectors of industry.
Advanced Polymer Solutions utilizes a custom formulation process resulting in more superior performance and longer life of your products providing your company with a competitive edge. Examples of industries served to include automotive, medical, packaging, equipment, pharmaceutical, printing, electronics, and many more. The ability to recognize the technical needs of small, medium and large corporations have significantly and successfully contributed to APS’ productive relationships with a large variety of organizations. Whether you look to APS for innovation or incremental improvement in an existing product or process, you can count on working with research and technology professionals with an impressive depth of knowledge and a strong commitment to find a solution to your problem.
We have successfully chemically grafting onto nearly all types of plastic including:
Please note: while the chemical grafting process is the same for all plastics the grafting initiator, monomers and catalyst are vastly different depending on the type of plastic and desired properties. Each project is custom-tailored to meet our client’s specifications.
Conventional plastic coatings adhere to materials by simple mechanical forces which can be easily broken causing peeling or delamination. Such is not the case with chemical grafting since the attachment of the coating is accomplished by forming a covalent bond between the substrate and the monomers via the substrate activator. The chemical reaction that takes place provides subsurface penetration in addition to the chemical bond. As a result, much thinner coatings can be obtained while providing longer life and superior performance of the material. Typical coating methods can be used i.e. dip, spray, roll. The
chemical grafting formulation comes in contact with the surface of the substrate by any of these methods, The chemical grafting reaction occurs instantaneously upon contact with the material. The desired thickness and preferred application method will determine the viscosity of the formulation. Most formulations are water based. The coatings can be air dried, however, heat (oven, IR, UV, etc.) may be used to accelerate the drying time. Most formulations will dry in seconds to minutes.
Sometimes in mechanical adhesives, two or more layers of various materials are laminated together to achieve desired characteristics. A generic adhesive used for all-purpose applications will fail especially when temperature changes occur. Again, these conventional adhesives hold their substrates together by mechanical means. In addition, failure of the bond will occur during temperature fluctuations due to differences in coefficients of thermal expansion. The adhesives developed by APS
use difunctional monomers and attach themselves to the substrates by a helical bond. This helix allows the resultant bond to move with the differences in the expansion and contraction rates of the substrates. Even substrates that are typically difficult to bond are activated and attached by this means.
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