Organic and Inorganic Fillers

Fillers are particulate, organic or, for the most part, inorganic substances in solid form. Their incompatibility with the basic material (matrix) results in a multiphase system, the compatibility of which can, however, be increased by means of coupling additives (coatings) - similarly to the process with reinforcing fibers leading, at the least, to bridge formation. 

Basically, a large filler surface is desirable, but if it is too large it may result in agglomeration and will have a coarse-grained effect. 

Among the particulate organic fillers, wood meal is the most important material for use in thermoplastics, in particular PP. For curable molding compounds, powdered cellulose is also in this category. These finely powdered materials are actually fibrous, finely ground and specially conditioned products based on spruce or beech wood or cotton. Others include wood granulate, sawdust, shell and seed meal and, already mentioned in relation to impact modifiers, natural rubber. 

Approximately over 50 million tons of inorganic fillers were produced in 2006, dominated by a small number of major manufacturers such as Omya, Luzenac, Imerys, DAM, and Quarzwerke. Table 26 shows some of the details. 

Filler 2006 Share of world market volume in % (approx.) Main application in plastics 

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Therefore, these materials must be high in strength, low in wear and abrasion, and resistant to moisture and hydraulic fluids. These materials contain several components. Among them are phenolic resins, rubber, organic and inorganic fillers, metals, and fibers, such as mineral-, carbon-, aramid- or metal fibers. Phenolics function as binders in the friction materials. The phenolics are modified in different ways to increase flexibility and abrasion resistance as well as to improve the... 

In the present work physical and mechanical properties of inflated with organic and inorganic fillers aciyhc polymers in wide range of ratio of components in inert (air) and aggressive (water) mediums ate discussed. Electronic micrscopy and infra red spectroscopy was used for explanatiou of the received data. 

In the table 1 physical and mechanical characteristics of the inflated with organic and inorganic fillers acryUc compounded mix based on A4 acrylic dispersion are presented. The same behavior of samples based on the other acrylic dispersions was revealed. 

INVESTIGATION ON HIGHLY FILLED COMPOSITE MATERIALS WITH REGULATED PHYSICAL AND MECHANICAL PROPERTIES BASED ON SYNTHETIC POLYMERS AND ORGANIC AND INORGANIC FILLERS... 

Noteworthy is the behavior of two ternary systems 50 pereent sevilene at 25/25 of organie and inorganie filler and 15 pereent sevilene at 50/35 of organic and inorganic filler, for whieh the eorrelation time of all ternary systems studied is minimal. The systems are similarly plastic and similarly capable of being processed by eommercial equipment into partieular articles. 

The investigated floorings are a mixture of different organic and inorganic fillers with an organic orange azoic pigment polymer matrix. 

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