A new ASTM standard will be used to test the quality of silica, a raw material that forms the base for “greener” tires. Tire companies and silica producers will be the primary users of the new standard (D8016, Test Method for Silica, Precipitated, Hydrated — Sears Number). According to ASTM member Jorge Lacayo-Pineda, silica technology improves performance in tire-rolling resistance without deterioration in braking performance. This leads to better fuel efficiency, as well as a reduction in carbon dioxide emission in cars. Rubber companies, the main users of precipitated silica, can improve their specifications and ensure product quality by testing to the new standard, he says. The ASTM subcommittee that created D8016 plans to perform round robin testing next spring to evaluate the new standard’s precision. Rubber company labs, silica producers and academic institutions are encouraged to join. Participants in the study will be given samples to analyze according to the new standard.
Precipitated silica
Bonding, anti adhesion, anti caking, coagulation, controlled release, carrier, flow aid, improving printing effect, mechanical action, special additives for thermoplastic, reinforcement, rheological control and whitening. Hydrophobic silica treated by surface modification is easily soluble in oil. When it is used as reinforcing filler in rubber and plastics, the mechanical strength and tear resistance of its products will be significantly improved
Precipitated silica has a wide range of uses, and different products have different uses. As a good reinforcing agent for synthetic rubber, its reinforcing performance is second only to carbon black, and even better than carbon black after ultra-fine and appropriate surface treatment. It is especially suitable for manufacturing white, color and light color rubber products. It is used as thickener or thickener, blending agent of synthetic oil and insulating paint, dimming agent of paint, thixotropic agent of electronic component packaging materials, precipitant of phosphor during fluorescent screen coating, filler of color printing rubber plate and mold release agent for casting. Adding into the resin can improve the moisture-proof and insulation properties of the resin. Filling in plastic products can increase skid resistance and oil resistance.
Post time: Jun-22-2021