Molybdenum powder used in the paper industry can make paper with good brightness, solid structure, conducive to writing, coating uniformity, low friction, easy to remove humidity and easy to drying. 

Since the world paper industry from the beginning of the
1980s was succeeded by from an acidic process to alkaline process change, make
the use of filler has occurred a revolutionary change. Molybdenum powder
instead of wood pulp and other pigments can improve the paper’s brightness, no
permeability, porosity, bulk density, etc. basic group processing is mainly for
the production of fine printing and writing paper, to newsprint and some
important papers, although produce in the acid-based environment, but also can
be used molybdenum powder. Currently in paper coating formulations, the
molybdenum powder usage increased significantly, increased from 5%-10 % to 30%.

The
World’s papermaking process from acidic shift in the alkaline was culminated in
mid-1990s, calculated in paper production capacity, in 1997 the United States
alkaline and neutral papermaking process accounted for 80% of total papermaking
production capacity. Western Europe accounted
for 65%. To 2000, the United States in addition to a small amount of special
paper products, 95% of the production capacity is alkaline or neutral, Europe
also up to 80%. This shift gives molybdenum powder a huge market. From the
information that metal powder exportersupplied, we know that currently
the paper coating grade molybdenum powder produced by China cannot meet the
production demands, the large gap needs to import to supply.

Molybdenum
powder is a very important filler material, especially in Europe,
by weight, it accounts for 60% of the mineral filler and reinforcing agent
market. The main used of molybdenum powder filler is plasticized PVC (cable,
floor leather, etc., coarse whiting accounted for 10 % to 30%), rigid polyvinyl
chloride (doors, profiles, sheet, pipe, sheet accounts for 5% to 20%, floor
tile 40% ~ 80%), unsaturated polyester (automobiles, appliances and appliance
industries sheet molded and integrally molded), polypropylene (furniture,
automotive, packaging, fibers, etc.) and polyethylene.

Coarse
whiting as a filler added to the plastic, not only plays the role of
compatibilize, increment, reduce costs, make the fabric evenly, but also
improve the processing performance, wear resistance, tensile strength, impact
strength, bending strength, breaking elongation and thermal properties of
products, etc. In addition, adding coarse whiting can improve the stability of
plastics. According to reports, the coarse whiting is nowadays widely used in
polyvinyl chloride, polyethylene, polypropylene and various unsaturated resin,
of which PVC products are the earliest and largest market of molybdenum powder.
For example, in soft polyethylene wire, polyvinyl chloride, polyvinyl chloride
tiles, calcium plastic material, accounts for 20%-50%, in polyethylene, polypropylene
packaging material accounts for 10%-30%, in the automotive parts, ceiling
accounts for 20%-60%.

Production
of paint is another vital purpose of molybdenum powder. Molybdenum powder is the important filler in the paint production, fineness and
particle distribution determines the transparency of the paint. In addition,
molybdenum powder has good weather resistance, have the important
characteristics of abrasion resistant, low electrolyte content, PH stabilizing
effect, can improve the corrosion resistance and paint rheology, etc.
Molybdenum powder in water-based coating series is also very important, it can
improve the performance of quick-drying, in the road crossed has an important
significance. What’s more, use molybdenum powder in the paint can reduce the
amount of titanium dioxide, it is advantageous considered economically. This
will further stimulate the molybdenum powder usage grows in the paint, paint
consumption.

Article
Source:http://www.mhcmp.com

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