Quartz is composed of the simplest silicon dioxide, glassy luster, no cleavage surface, but with a shell-like fracture. Microcrystalline quartz is called chalcedony, agate or jasper. Pure quartz is colorless, but it shows different colors because of impurities often containing transition elements. Quartz is very stable and not easy to weathering or change into other minerals. According to the crystallinity of SiO 2, it can be divided into single crystal quartz and polycrystalline quartzite. Gloss: Glass gloss. Colour: No, white, with a little grey, yellow to orange, purple, deep purple, pink, grey brown, brown, black. Stripe: White. Specific gravity: 2.65 ~ 2.66. Category: Metamorphic rock, metamorphosed from sandstone.
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Strength & Durability
Expanded perlite/ vermiculite baords plate slab photo:
New building materials of fireproof thermal insulation board for wall, for ceilling, for pipe, for tank, for medical usage.
Function as below:
3. Impact strength 5.6KJ/m2
5. Low thermal conductivity,
6. stable performance
7. light weight,
8. fire prevention
9. non-toxic and tasteless
10. Nonionic adhesive No corrosion
11.Refractory grade A1, conform to the fire door GB12955-2008 new technique standard.
Usage as below:
1. Widely used in wood fire door
2. Fire resistance steel door
3. Interior with fireproof core board and fireproof isolation
4. Public buildings,
5. Civil construction
8. Oil pipe insulation,
9. Sound insulation ect.
Main parameters of thermal insulation boards:
1, density (D): 200-300kg/m3
2, the flexural strength of more than or equal to 8MPa
3, the compressive strength: 0.35-0.8 (Mpa)
4, the coefficient of thermal conductivity: less than or equal to 0.035-0.076W/ (m.k)
5, water content (%): less than 10
6, wet expansion rate (%): less than 0.25
7, refractory limit: 0.6-2h
8, fire resistant temperature of 1300 DEG C:
9, the sound absorption coefficient: 0.03-0.8
1> Certification of ISO 9001. CE(MD+LVD)
2> We have inspections every year by National Quality Technical Supervise Department.
3> Our Quality Inspection Department make test of each machine before loading.
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