The technology and practical application of perlite products?
Expanded perlite is a lightweight, versatile new material. It has the characteristics of light apparent density, low thermal conductivity, good chemical stability, wide temperature range, low moisture absorption capacity, non-toxic, odorless, fireproof and sound absorbing. It is widely used in various industrial sectors. Knitting Machine Needle Cylinder,Cylinder Needles,Needle Cylinder,Needle Cylinder Means Changzhou Longfu Knitting Co., Ltd. , https://www.czcircularmachine.com
The expanded perlite fireproof board is a new type of fireproof door core filling material made of expanded perlite, pre-embedded skeleton, and a suitable adhesive as a binder.
The basic process overview is:
1. Material selection: Select the suitable expanded perlite material as the main material, select the applicable material as the skeleton, and select the binder that can meet the testing requirements as the bonding material.
2. Mixing: Add the binder to the perlite and stir it evenly through a special special mixer.
3. Pressurization: put the material into the mold or the core of the door core, pressurize,
4, the mold: the film, natural drying, packaging is the finished product.
Expanded perlite fireproof panels are currently divided into several different quality products:
Perlite fireproof board is generally made of water glass with a certain number of moles, or glass water, that is, sodium silicate, which is made into different specifications by high temperature hot pressing process; if inorganic materials such as magnesite cement material are used as pearls Rock binder (can also be foamed to reduce the weight of the door core board), can be used as a partition board or other building applications; or add some similar to urea-formaldehyde resin, polyester, protein, construction glue, 107 or 801 glue as a binder, because some will naturally release poison, and some will produce toxic gas through combustion, can be applied in sub-normal temperature or high temperature environment after full placement, such as insulation board, sound insulation board, heat insulation board, etc.
If the inorganic bonding material is used as the main raw material, it belongs to the non-ionic and neutral state, and does not undergo displacement reaction with the metal molecules, and each of the perlite particles is in the state of coating. The film itself has high water resistance and hinders the pearl. The moisture absorption performance of the rock confirms the corrosion-free steel plate, the finished product has high strength, small thermal conductivity, moderate bulk density, good water-repellent performance, acid and alkali resistance, freeze-thaw resistance, high temperature resistance, good sound insulation, good elasticity and heat insulation. Flame retardant, dry and no black smoke, high temperature and high flame, no toxic gas after burning (according to GB/T20285-2006 standard) and GB12955-2008 "fire door" new standard, can be applied to fire shutter filling, fire door core The filling board can replace the replacement products of aluminum silicate cotton, rock wool, glass water type perlite board and foamed magnesite cement perlite board.
Perlite / vermiculite fireproof board, generally is a water glass with a certain number of moles, or glass water, that is, sodium silicate, made of different specifications by high temperature hot pressing process; if using magnesite cement material and other inorganic The material is made of perlite/ vermiculite binder (may also be foamed to reduce the weight of the door core board), and can be applied as a partition board or the like; or a part similar to urea-formaldehyde resin, polyester, protein, Construction glue, 107 or 801 glue as a binder, because some will naturally release poison, and some will produce toxic gas through combustion, can be applied in sub-normal temperature or high temperature environment after fully placed, such as insulation board, sound insulation board , insulation board, etc. At present, China's largest perlite fireproof board manufacturer is Xinyang CITIC Perlite Mining, CITIC Perlite Mining Group is a combination of industry and trade that integrates production and sales of new wall, energy-saving waterproof insulation materials. Environmentally friendly energy-saving materials companies. Long-term professional production and processing: perlite, hydrophobic perlite insulation board (brick), expanded perlite, perlite insulation pipe profile, closed-cell perlite, vitrified microbeads, perlite filter aid, perlite degreaser, Perlite cover, horticultural perlite, perlite fire board, insulating pearl sand, bentonite (sodium based / calcium based / lithium based / feed grade), perlite abrasive, hollow microspheres, highly efficient activated clay, white / yellow zeolite powder And related products such as autoclaved aerated concrete blocks.
If the inorganic bonding material is used as the main raw material and the bonding material capable of satisfying the non-ionic and neutral state is applied, the plate body does not undergo a displacement reaction with the metal molecules, and each of the perlite particles is in a state of coating, and the rubber is in a state of being coated. The film itself has high water resistance, hindering the moisture absorption performance of perlite/meteorite, confirming that the corrosion-resistant steel plate has high strength, low thermal conductivity, moderate bulk density, good water-repellent performance, acid and alkali resistance, salt resistance and freeze-thaw resistance. High temperature resistance, good sound insulation, shock absorption, good heat insulation, flame retardant, no black smoke, high temperature and high flame, no toxic gas after burning (according to GB/T20285-2006 standard) and GB12955-2008 "fire door" new standard It can be applied to the filling board of fire shutter filling and fire door core, and can replace the replacement products of aluminum silicate cotton, rock wool, glass water type perlite board and foamed magnesite cement perlite board. 