Glass is not considered a polymer. Polymers are large molecules composed of repeating structural units called monomers, connected by covalent chemical bonds. These materials can be natural, like cellulose and silk, or synthetic, like nylon and polyethylene. Polymers have a broad range of properties, but they are typically characterized by their plasticity and ability to be molded into different shapes, often under heat and pressure. Glass, on the other hand, is an amorphous solid primarily made of silica (SiO2), with other metal oxides added depending on its type and intended use. Unlike polymers, glass transitions from a solid to a viscous liquid upon heating without a defined melting point and doesn't consist of long-chain molecules. The structure and chemical composition of glass are fundamentally different from polymers, classifying it as a distinct type of material.

Yes, there are epoxy resins specifically formulated for outdoor use. These resins are designed to withstand UV radiation, temperature changes, moisture, and other environmental factors that can cause discoloration, brittleness, or degradation. Outdoor epoxy resins often contain UV inhibitors or stabilizers to prolong their clarity and structural integrity. For any outdoor project, it is crucial to select an epoxy resin labeled for exterior use to ensure longevity and durability. Adequate preparation and application according to the manufacturer’s instructions are also key to achieving the best results. Some popular uses include outdoor furniture, coatings for decks, and art installations exposed to the elements.

Clear gel thickener, often used in cooking and cosmetic formulations, can be bought from various sources. For culinary purposes, look for food-grade options in grocery stores, particularly in the baking aisle, or specialized food ingredient suppliers online. Brands like ClearJel are popular for making pie fillings and jams. For cosmetic or industrial uses, chemical supply companies and online marketplaces like Amazon or eBay offer a range of clear gel thickeners suitable for different applications. Be sure to choose the right product for your specific need, whether it's for cooking, cosmetics, or another use. Checking customer reviews and product specifications will help ensure you buy a high-quality thickener.