The main core material of glass magnesium sandwich panel is as follows
1. Core material (mainly: EPS, rock wool, glass wool, flame retardant paper honeycomb board, polyurethane, etc.)
2.1 Introduction to various core materials
(1) foam board
Made from expandable polystyrene (EPS) particles, shaped like chemical fertilizer particles, heated to pre-expansion, into larger particles like white pearls, and then made in a mold with heat and press-molded to have a fine closed cell structure Foam plastic plate.
(2) Polyurethane energy-saving performance
Excellent fireproof and heat-retaining material, used for making composite board polyurethane generally has a bulk density of 30kg to 40kg
(3) Rock wool board
Based on basalt stone as the main raw material, after high temperature melting, the inorganic fiber is made by high-speed centrifugal equipment, and evenly added a certain proportion of binder to bake into large plate. According to production needs, cut into rock sliver, rock wool is non-combustion Body, good fire performance.
(4) Glass wool
It is a light, heat-resistant, flexible, otherwise heat-insulating material widely used in chemical industry, medicine, factories, heavy industrial machinery equipment, construction, vehicles, and aerospace. It is an ideal material for heat insulation, fire prevention and sound absorption.
(5) Flame-retardant paper honeycomb panel
It is a national Class B1 fireproof material with the advantages of good flame retardancy, good compressive strength, non-combustion without carbonization, no toxic substances, and complete recycling of wastes. It is a core of polystyrene, polyurethane, and rock wool. Ideal alternative to wood.
(6) Polyurethane
It is a kind of material with excellent fireproof and heat preservation performance. The polyurethane board used for composite board usually has a bulk density of 30-40 kg.