5949 degrees Fahrenheit or 3287 degrees Celsius.

Polypropylene (PP) is a notoriously difficult material to bond due to its low surface energy. Traditional adhesives often fail to properly adhere to PP. However, there are specially formulated adhesives designed for plastics like polypropylene. Cyanoacrylate adhesives (super glue) can be effective for small repairs, but their bond can be brittle. For a stronger, more flexible bond, two-component epoxies specifically designed for polypropylene or plastic-specific adhesives containing MMA (methyl methacrylate) are recommended. Surface pretreatment with a plasma or corona treatment can significantly improve adhesion, but these methods are more complex and typically used in industrial applications. For DIY projects, using an adhesion promoter or primer designed for polypropylene before applying the adhesive can also enhance bond strength. Always follow the manufacturer’s instructions for the best results.

Polyvinyl chloride (PVC) is a widely used plastic found in a variety of products from pipes to toys. While PVC itself is considered stable, concerns arise from the additives used in its production, such as phthalates, which can leach out. These chemicals have been linked to health issues including hormonal disruptions, respiratory problems, and possibly cancer, especially when PVC is burned, releasing dioxins, potent carcinogens. Additionally, workers in PVC manufacturing facilities may face health risks due to exposure to vinyl chloride, the chemical used in PVC production, which is a known carcinogen. It’s important to handle PVC products appropriately and support policies for safer alternatives and manufacturing practices.