HG/T 4221-2011 (English Version) PDF

Scope: This standard specifies the product types, requirements, test methods, inspection rules, marking, packaging, transportation and storage of two-component room temperature vulcanized silicone mold rubber. This standard applies to silicone rubber for addition and condensation molds. This product is mainly used as a molding material in industries such as building decoration materials, handicrafts, imitation mahogany furniture, precision casting, high-frequency embossing, cultural relic reproduction, and gypsum board production. The formed mold can be used to produce products made of polyurethane, unsaturated polyester, epoxy resin, paraffin, gypsum, low melting point alloy and other materials.

HG/T 4221-2011 Referenced Document

GB/T 191-2008 Packaging.Pictorial marking for handling of goods
GB/T 2794-1995 Determination methods for viscosity of adhesives
GB/T 528-2009 Rubber,vulcanized or thermoplastic.Determination of tensile stress-strain properties
GB/T 529-2008 Rubber,vulcanized or thermoplastic.Determination of tear strength(Trouser,angle and crescent test pieces)
GB/T 531.1-2008 Rubber,vulcanized or thermoplastic.Determination of indentation hardness.Part 1:Duromerer method( Shore hardness)
HG/T 2198-1991 General requirements for physical test methods for vulcanized rubber

2011 HG/T 4221-2011 Dual-component silicone rubber vulcanized at normal temperature for mold-making
2011 HG/T 4221-2001 Two-component room temperature vulcanized silicone mold glue