Civil Engineering - Building Materials - Discussion

What is cellouse resin?

Cellulose plastics are bioplastics manufactured using cellulose or derivatives of cellulose. Cellulose plastics are manufactured using softwood trees as the basic raw material. Barks of the tree are separated and can be used as an energy source in the production. To segregate cellulose fiber from the tree, the tree is cooked or heated in a digester. As per Transparency Market Research, resins and lignins are produced as a byproduct in the digester. The byproducts can be used as a fuel or as a feedstock in the production of other chemical products. The pulp such produced is comprises hemicelluloses and alpha cellulose. Pulp is then treated with bleaching chemicals to eliminate any traces of resins and lignins and to reduce the hemicelluloses content of the pulp. The processed pulp contains water which is removed from the pulp before processing the pulp with high alpha cellulose content.

Properties of Plastic.

Plastics have numerous properties that make them superior to other materials in many applications. Plastics generally have: resistance to corrosion and chemicals, low electrical and thermal conductivity, high strength-to-weight ratio, colors available in a wide variety and transparent, resistance to shock, good durability, low cost, are easy to manufacture, resistant to water and have low toxicity.

Not getting, please explain it.

I think it possesses excellent electric properties since only some of the plastics possess it.

Agree @ Charles.

how it is possible that a plaster is the conductor of electricity?

Agree @Charles.

Anyone clarify it.

How does plastic possess electrical property?

Is that resistant you mean?

Bitumen is the heavy end (i.e. Higher molecular weight) residue from the fractionation of crude oil. When you have extracted such things as fuels, fuel oils, lubricating oils and waxes from the crude oil, what is left is a thick sticky black liquid, consistency anything from "treacle" up to a firm glassy amorphous sold. That is bitumen.

Tar is similar, but is not extracted from crude oil; it is extracted from coal.

Asphalt is a mixture of bitumen and aggregates (inorganic heavy fillers, sands, grit, stones) of various kinds used for construction of road surfaces.