I'd like to use talcum powder as fiberglass resin filler. I don't know what specifications
The thickness of the packing can enhance the strength and toughness of the product and increase the stability of the product. Previously used toothpaste powder (toothpaste grade calcium carbonate) as a filler, compared to talcum powder should be relatively expensive. As a filler of chemical products, it does not have anything to do with calcium free.
Glass steel products general filling material 400 mesh and 800 collocation is feasible, it is fine, coarse not too thick (easy to precipitate), a filling requirement is not high enough, more personal experience for your reference.
As the product filling material also has the difference, if is the resin handicraft, some to reduce the cost, the resin fills the material proportion to be very big, for example 1:1 proportion, thick and thin padding, again 1:1, uses talcum powder not to be suitable. Talc powder, though fine, will lose its permeability at the same filling ratio. The difference of course process sometimes does not consider these factors, such as coloring crafts, glass or steel products, is a completely filled, then to add the appropriate proportion according to the technological difference, the proportion in the industry did not add specific differences, such as pressing, filling and hand paste, in accordance with the requirements of products reasonable to add.