Weight filler

This type of filler is a growing type of system in filling oil-based product since the expense of the product justifies the cost of a net weight filler. 

An auger screw for powders or very viscous materials is another means of volumetric filling and relies on a number of whole turns or part turns of the screw. Weight fillers can be based on a bulk weighing plus a trickle feed fill-up. 

Uses Light weight filler for coatings, plastics, and adhesives reduces density increases solids volume improves impact and thermal shock resist. 

An ideal filler would be low in cost compared to the PVC, have perfectly spherical particles with a small but uniform particle size and distribution, be easily dispersed within the polymer matrix, have a refractive index that could be chosen to either increase opacity or provide clarity, and have a low densily or specilie gravity compared to PVC. Since PVC compounds compete on a cosl/volume basis against other polymers, PVC s high density compared to polyolefins or polycarbonates often places the final formulation at a disadvantage when measured solely on eost per unit of weight. Fillers, while providing rigidity and reinforcement, will also lower the formulation costs. 

Kron, A. (2005) Low weight filler -thermally expandable hollow polymer microspheres. Proceedings of the High Performance Fillers RAPRA Conference, March 2005, Cologne, Germany. 

Figure 5.4 The relationship between dynamic storage modulus and angular frequency for polypropylene containing uncoated magnesium hydroxide fillers (60% by weight filler)...

A variant for sinks and flat Stock production, c. 700 e. 21/25 A low exotherm variant to aid the use of light-weight fillers, c. 1150 e. 21/25 A room temperature BPO cure resin, c. 875 e. 20 5 A general purpose marble casting resin, c. 1275 e. 18.5/25 Ahigh viscosity version of SIL 90BA-1000. c. 3150 A summer version of SIL 90BA-1000. e. 40/25... 

The tensile strengths of composites containing the treated and untreated fillers are shown in Figure 11. At 20% by weight filler loading the tensile strength of polypropylene was reduced by all three fillers. This had been expected since all the... 

Weight Polymer Gravity Weight Filler Gravity Gravity... 

---