摘要:
A process for providing a fiber cement product is provided the process comprising the steps of • Providing an uncured fiber cement product; • Curing said uncured fiber cement product; • Drying said cured fiber cement product to obtain a humidity of said cured fiber cement product being less than or equal to about 8%w; • Abrasive blasting at least part of the surface of said dried fiber cement product.
摘要:
The present invention relates to processes and apparatuses for producing fiber cement sheets as well as fiber cement sheets obtainable therewith. The processes according to the present invention at least comprise the steps of: (a) providing a cementitious slurry comprising fibers, (b) continuously discharging the slurry on an endless water-permeable transport belt, and (c) removing excess of water from the slurry through the water-permeable transport belt to form a fiber cement sheet with a predetermined thickness. By using a water-permeable transport belt for removing the excess of water from the fiber cement sheet, both the thickness and the density of the sheet can be accurately tuned, without resulting in a spring-back of the thickness of the sheet at the end of the production process. The present invention further relates to various uses of the fiber cement sheets obtainable by the processes of the invention in the building industry.
摘要:
A process for providing a fiber cement product is provided the process comprising the steps of €¢ Providing an uncured fiber cement product; €¢ Curing said uncured fiber cement product; €¢ Drying said cured fiber cement product to obtain a humidity of said cured fiber cement product being less than or equal to about 8%w; €¢ Abrasive blasting at least part of the surface of said dried fiber cement product.
摘要:
The present invention relates to processes and apparatuses for producing hydrophobized fiber cement sheets as well as fiber cement sheets obtainable therewith. In particular, the present invention provides processes for manufacturing a hydrophobized fiber cement product, said process at least comprising the steps of: (i)forming at least one fiber cement film on a rotating sieve (17) in contact with a fiber cement slurry in a vat (16); (ii)transferring said at least one fiber cement film from said sieve (17) to a felt transport belt (3), (iii)applying a hydrophobizing agent to said at least one fiber cement film, and (iv)accumulating the fiber cement film on an accumulator roll (1) via the felt transport belt (3), so as to form a hydrophobized fiber cement product. The present invention further relates to various uses of the fiber cement sheets obtainable by the processes of the invention in the building industry.
摘要:
A Hatschek process for the production of profiled fiber cement plates is provided. The process comprises the steps of • Providing an endless fiber cement multilayered slab stacking at least one monolayer of a first type having a first width and at least one monolayer of a second type of monolayers having a second width, the at least one monolayer of a second type of monolayers extending in transverse direction beyond the at least one monolayer of a first type of monolayer; • Accumulating at least one layer of the endless fiber cement multilayered slab on a profiled accumulator roll having a recess along at least part of its circumference whereby the at least first monolayer is provided within the recess; • Removing the accumulated slab from the accumulator roll; and • Curing the uncured fiber cement plate.
摘要:
An inorganic fibrous shaped refractory article having a high bio-solubility which is capable of exhibiting a desired heat resistance without containing expensive ceramic fibers, alumina powder and silica powder can be provided at a low production cost and with a low product price. An inorganic fibrous shaped refractory article includes 2 to 95 mass% of rock wool, 2 to 95 mass% of inorganic powder having a needle-like crystal structure and 3 to 32 mass% of a binder. Preferably, in the an inorganic fibrous shaped refractory article, the inorganic powder having a needle-like crystal structure has an average length of 1 to 3000 µm and an aspect ratio of 1 to 1000, and more preferably the inorganic powder having a needle-like crystal structure is wollostonite powder or sepiolite powder.
摘要:
A process for the manufacture of fiber reinforced cement material comprising a step of discharge of the cementitious slurry comprising fibers onto the surface of a rotating cylindrical sieve.
摘要:
To provide a highly bio-soluble fibrous shaped refractory article which can develop desired heat resistance without containing ceramic fibers such as aluminum silicate fibers, alumina powder and silica powder and can be provided at a low production cost and a low product cost. An inorganic fibrous shaped refractory article comprising 2 to 95 mass% of bio-soluble inorganic fibers having a dissolution ratio in a physiological saline at 40°C of 1 mass% or more, 2 to 95 mass% of inorganic powder having a needle-like crystal structure and 3 to 32 mass% of a binder, and in particular, it is an inorganic fibrous refractory article wherein the inorganic powder having the needle-like crystal structure has an average length of 1 to 3000 µm and an aspect ratio of 1 to 1000.