Questions tagged [materials]

Material is a general term for a chemical substance or a mixture of substances with certain, well defined physical properties.

Filter by
Sorted by
Tagged with
7
votes
4answers
1k views

Can flexible plastics have reflective coating (vacuum metalized)?

Is it possible to achieve an optical mirror coating to a flexible plastic part? If vacuum metalization is possible, would the reflective coating layer be durable enough to withstand the bending of a ...
2
votes
1answer
3k views

What is the chemical composition of a Rubbermaid Roughneck container and is it feasible for me to make my own molds?

I'm looking for more information on the composition of a Rubbermaid Roughneck container. The description says "Roughneck containers are made with a durable polyethylene material for a lifetime of ...
7
votes
2answers
1k views

Why do shape and size have the greatest effect on the optical properties of nanoparticles?

The LSPR properties of nanoparticles depend on a number of factors, including shape, size, material, crystal structure, dielectric environment, etc. However, it has been consistently shown that shape ...
3
votes
1answer
114 views

Is phenolphthalein used in laminar wood construction panels?

Recently someone is claiming that the laminar wood panels used for building our new primary school contains a "carcinogenic and dangerous compound", namely phenolphthalein. I couldn't find any ...
11
votes
3answers
4k views

Which materials/compounds expand in response to cold temperatures?

Which materials or compounds expand in response to cold temperatures? This material or compound should expand at a slow (but constant rate), from about 0–20 months when in the following temperature ...
3
votes
1answer
593 views

Are there any nonflammable thermal insulators which can be made at home?

I am trying to build a homemade thermos. It needs to be able to conserve the heat in 125 ml of water for 15 minutes. However, unlike a normal thermos, it also needs to be able to be heated. What ...
9
votes
1answer
131 views

Materials used in metallic glass

I've been looking over the lists of materials used together to make metallic glass. Is it purely coincidental that if you round up/down any decimals from the atomic weight of elements used to ...
17
votes
2answers
246 views

Rock that transfers image

This is a question that has been bugging me for over 15 years! In high school while studying elements our teacher showed us a clear white rock or element. It was simply flat on both sides but when ...
16
votes
1answer
3k views

What material are heat bags made of?

I just bought a heat bag from store and it has special property. It is made up of transparent plastic bag and transparent unknown liquid inside when sold. There is a tiny circular metal piece in ...

1
3 4 5 6
7