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Epoxy is the family of basic components or cured end products of epoxy resins. Epoxy resins, also known as polyepoxides, are a class of reactive prepolymers and polymers which contain epoxide groups. The epoxide functional group is also collectively called epoxy. [1] The IUPAC name for an epoxide group is an oxirane.
Paper Clay Adding reconstituted paper pulp to ordinary plastic clay in proportions up to 50% of the total mass. This increases the unfired strength, giving an advantage to hand builders and sculptors. Careful firing is needed to avoid damage by the combustion of the paper. Penetrometer An instrument used to measure the hardness of a clay body.
This is because there is no physical difference between soft clay and the same clay as a soft paper clay, except the addition of a small percentage of tiny inert cellulose fibers. However, using less fiber in paper clay on the potters wheel is recommended, particularly if the leather hard work is to be trimmed on the wheel.
After evaporation of the solvent, a solid compound is formed. Chemical bonds are also important in certain adhesive / substrate combinations, for example when bonding glass using silicone adhesives, wood using polyurethane adhesives and aluminium using epoxy adhesives. Chemical bonding leads to significantly higher adhesion than physical bonding.
Paper clay is handmade or commercially available clay to which a small percentage of processed cellulose fiber is added. The fiber increases the tensile strength of the dry clay and enables dry-to-dry and wet-to-dry joins. Commercial paper clays air-dry to a firm, lightweight sculpture, with minimal shrinking during the drying process. [4]
They are stored until used as two components of clay-like consistency. Kneading the two components into each other creates an exothermic chemical reaction that activates the substance for use by catalysing an epoxide polymerisation reaction. Unlike many other types of glues, an epoxy adhesive can fill gaps, and even be moulded into
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A multicolored print could be made using different blocks for different colors. For ceramics, the print was made onto duplex paper, with a thin layer of tissue paper facing a thicker layer of paper. A weak varnish was painted on the ceramic surface, which could be slightly curved, then the duplex paper pressed onto the surface.