There are many acidic and alkaline drugs in the chemical laboratory. The chemical substances used in the experiment are easy to corrode the test bench. Therefore, when the laboratory furniture is selected, the acid and alkali corrosion resistance and fireproof and explosion-proof performance of the laboratory furniture are required. When selecting a test bench for use in a chemical laboratory, the performance requirements for the test bench are particularly critical.
Chemical laboratory countertop materials usually use phenolic resin composite veneer countertops, phenolic resin solid countertops, epoxy countertops, TOTO ceramic countertops, etc.
Composite veneer countertop:
The material is made of 1mm thick phenolic resin for chemical experiment, the substrate is made of high quality MDF material, the bottom is phenolic resin ordinary fireproof board, and the surrounding is covered with 2.0mm thick PVC material; the composite thickness of the countertop is 40mm;
Solid core countertop:
The material is made of 12.7mm thick phenolic resin plate for chemical experiment. The total thickness after adding is 25.4mm; the surrounding chamfer is R10mm; the high temperature is not more than 135°C.
The material thickness is 13mm, 20mm, 25mm for selection; its main feature is 24-hour resistance to strong acid and alkali corrosion; it has strong wear resistance, impact resistance, pollution resistance, no bending; high temperature resistance up to 600 °C.
In addition to the standard on the selection of the test bench, the overall material of the test bench should also meet the requirements of chemical laboratory use and chemical experiments. At present, the widely used experimental bench materials in domestic and foreign laboratories mainly include all-steel test benches and steel-wood test benches.
All steel test bench:
The cabinet is made by bending, spraying and assembling cold-rolled steel plates. The cabinets are generally cold-rolled steel sheets, acid-washed and phosphated, and then epoxy-coated. They are often divided into floor structure and hanging box structure, and activities. Box structure.
Steel-wood test bench:
The difference from the all-steel test bench is that the steel-wood test bench is basically a steel frame plus a full-wood cabinet. The support of the test bench is sprayed with epoxy resin after pickling and phosphating, and the box is generally made of melamine fiberboard.