Rust-Oleum® Paint For Plastic renews and revitalizes automotive grade indoor and outdoor plastics. For use on: Automotive plastics, polypropylene, polystyrene, resin, PVC, fiberglass, and vinyl plastics such as chairs, tables, and planters.
Polypropylene primer is used for hard-to-bond surfaces such as polypropylene plastics—typically denoted by PP. These surfaces typically have a low surface energy (LSE), which prevents ink, paint, and adhesive from bonding onto the substrate. The primer increases the surface energy level of the substrate.
The problem with polypropylene is that it falls into the class of low energy plastics, meaning it's inert and highly stable. This is why it gets used in so many applications. Those same properties make it difficult to get anything to stick to it so you need a highly energetic bonding agent which lacquer is.
Acrylic might not grip well on polyethylene. Try spray paint made for plastics or use a primer specifically for plastic surfaces before painting. Sanding the plastic lightly can also help the paint adhere better.
For difficult to bond plastics (like PP and PE) reach for Loctite Plastics Bonding System. This two-part system also bonds to PVC, requires no mixing, and sets in seconds. For a ridged, high strength bond that is impact-resistant and will not shrink, reach for Loctite Plastic Bonder.
The best paint to use for coating polyethylene is an exterior latex house paint or an elastomeric paint that maintains its flexibility even when dry. This will allow the tank to expand and contract without chipping or tearing the paint.
While polypropylene is usually resistant to standard glues, it can be glued with polypropylene-based adhesive. At Gluegunsdirect.com, we recommend Tecbond 267 instant bonding hot melt adhesive for effectively bonding Polypropylene (PP) to Polypropylene (PP).
It is also important to note that non-porous surfaces will often have less texture or surface area to support the mechanical adhesion of acrylics. On some plastics like Polypropylene, acrylics will never develop permanent adhesion.
A plastic primer, also known as an adhesion promoter, is a one-component primer designed to treat bare plastic to increase the adhesion of the various layers of paint applied during the repair and/or painting process.
These are numerous and varied; they include, for instance, heat and flame treatment; treatment with ozone, a gaseous halogen and/or ultraviolet light; electronic treatment; and chemical treatment with sulfuric acid and sodium dichromate; All of these methods have the common result of increasing the surface tension of ...
Calcium carbonate fillers
Calcium carbonate can be used to modify the thermal properties of polypropylene, thereby increasing the operating temperature of the material or improving insulation.
These sprays are ideal for use on polypropylene, polystyrene, resin, PVC, fiberglass, and vinyl plastics such as chairs, tables, and planters. TIP: Some plastics made of polyethylene such as plastic storage containers are manufactured in a way that may hinder maximum paint adhesion.
Since plastic surfaces are naturally smooth, we recommend a primer as the first coat to improve the durability of the varnish. Apply To Bond, which acts as a bonding agent between the plastic and the varnish. After a drying time of about 6 hours, you can start painting.
Rust-Oleum® Painter's Touch® 2X Ultra Cover Satin Sprays contain technology that provides twice the coverage on wood, metal, most plastic, wicker and more when compared to other matching colors of Rust-Oleum general purpose paints: Painter's Touch, SPRAY N GO, Quick Color and Touch 'n tone.
Infinity Bond MMA 500 glue for plastic
Another great polypropylene or polyethylene adhesive is the MMA 500. This product is specifically designed to work on low surface energy plastics like polyethylene and polypropylene and is especially effective for strong bonds.
It resists most strong mineral acids and bases, but, like the other polyolefins, it is subject to attack by oxidizing agents. HMC PP resins are appreciably affected by chlorosulfonic acid and oleum at room temperature, 98% sulfuric acid, 30% hydrochloric acid, and 30% hydrogen peroxide at 100°C (212°F).
However, Gorilla Glue Super Glue can work on polypropylene plastic, but it's not recommended, and the bond will not hold for long. The super glue bonds might hold longer for more minor repairs.
Since most plastic is smooth, you want to rough up the surface a bit to give the paint something to stick to. Fine sandpaper will rough up the smooth surface without leaving visible sanding marks, so make sure to keep it to a fine grit.
Flexible epoxy such as Permabond ET515 is preferred.
PP3000 is a low-energy structural adhesive for bonding polypropylene, polyethylene and other difficult to bond low surface energy materials and will bond similar or dissimilar substrates while offering excellent chemical, water and humidity resistance.
This flexibility allows polypropylene to display a wide range of properties based on the chosen manufacturing method. While polypropylene shares similarities with polyethylene, polyurethanes typically offer more robust physical properties, especially in extreme environments.
Surfaces which are only slightly dirty can be cleaned with a moistened cloth or sponge. Much dirtier parts can be cleaned using water with a gentle household or neutral cleaner. Don't use sharp and/or scouring cleaning agents as they could easily damage the surface.