Silica gel, also known as silicic acid gel, is a highly reactive adsorbent that is an amorphous material. The main component of silica gel is silica, which is chemically stable and does not burn.
The laboratory is usually used as a desiccant, which is a small blue circle
PET, also known as thermoplastic elastomer, is a high molecular polymer or polymer alloy material with a rubber soft segment (or rubber phase) and a plastic hard segment (or continuous plastic phase) structure. The most common PET refers to a polymer alloy material synthesized by mixing SEBS and SBS.
PET and silica gel have many similar properties, such as soft touch, rubber elasticity, environmentally friendly and non-toxic. Silicone is a traditional material and PET has only been in the rubber and plastics industry for almost a decade. PET and silica gel have similar properties and has its own advantages and disadvantages. In recent years, PET has replaced silica gel in many fields with its advantages, and there is a way to use silica gel.
Generally, silica gel has excellent resilience, small permanent deformation, and poor PET. The cost of PET is relatively low, the processing is more convenient, the material can be used repeatedly, and the silica gel is poor.
In addition, in terms of environmental protection characteristics, although PET and silica gel are environmentally and non-toxic, for the testing of food contact materials, silica gel meets the standards, and PET basically cannot pass the test standard.
In terms of heat resistance, PET can bear the temperatures of 70 to 90, and special PET can bear the temperatures of 100 to 130. Silicone can bear the temperatures of 200 to 250 without deformation.
In terms of chemical resistance, silica gel is generally superior to PET.
In short, PET and silica gel have their own advantages and disadvantages. The new product material is silicone or PET ,should be determined according to requirements.
Post time: Sep-17-2019