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

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What is the plastic material of the CD cases?

What is the material of which the transparent part of CD cases are made of? It is nicely rigid and really lightweight.
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512 views

What makes teflon such a strong material?

I don't know much about polymers but recently teflon made me get addicted to study their properties and nature. As far as I know, the teflon polymer contains fluorine which is one of the most ...
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12 views

Polymer Crystallinity

See the following question: I think the answer is A because of the hydrogen bond in the side group, thus the degree of secondary bonding between parallel chain segments is higher. Is my thinking ...
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20 views

What is relationship between molecular weight distribution of PE and its strength?

I'm trying to figure out the relationship between the molecular weight distribution of a polyethylene plastic and its strength and heat sealability. (The molecular weight distribution is described ...
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1answer
30 views

How do you perforate a teflon sheet?

I have a sheet of thin unperforated teflon that I need to perforate by tomorrow for a lab I work in. None of my coworkers know how to perforate the sheet. Does anyone know how I can do this using ...
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29 views

What is some advance reference books about alloy that gives a lot historical background and applies a lot of theoretical equation or formulas

What is some advance reference books specifically about alloy that gives a lot historical background and applies a lot of theoretical equation or formulas with explanation? I seem to find nothing ...
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24 views

TiO2 nanotube application in cement

I am perparing for a presentation on the application of TiO2 nanotubes in cement which is a recent topic in cement chemistry. Do you happen to have any papers (or know of any accessible on Internet) ...
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1answer
29 views

What type of material is this and how is it corroding?

So I was thinking about corrosion and I came across this structure(see image) Do you think the inner metal/alloy that is corroding is steel? Also, what do you think the outer layer (in white) is? ...
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1answer
14 views

What is the correct temperature probe for a wet etch solution?

What type of probe or probe coating should one use to measure the temperature of a roughly 100c aqueous solution of cupric chloride? A stainless steel probe seems incorrect. Is a Teflon coated probe ...
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1answer
27 views

Generally available fluid with good heat transport properties

I have designed a container which is heated up and has to heat up some tube-coils of water inside of it. This container is filled with a fluid that can help store and transfer the heat received from ...
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1answer
47 views

Is the end of a cigarette on fire when lit?

Is the end of a cigarette on fire when it is lit? Or is it smoldering? Is there a chemical difference between the two?
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42 views

Examples of electronically conductive foods?

There are many foodstuffs that are ionically conductive (for example, anything moist and salty). What about foods that have a high electronic conductivity? The only thing I can think of would be ...
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59 views

pH and materials selction

I working on the Navy study guide for their nuclear engineering programs and I am not a Chemist. Thus, I have come here to try and develop a better understanding of the subject matter. I am trying ...
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1answer
39 views

Change in pressure or volume of molten salt

I am doing a project in which I fill a cylinder with a volume of $636cm^2$ (made of stainless steel) with molten salt: 60% Sodium Nitrate ($NaNO_3$) and 40% Potassium Nitrate($KNO_3$). The container ...
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0answers
50 views

Vycor + hydrogen at 750°C - reduction?

Does anybody have experience with Vycor 96% silica tubing in hydrogen at bright red heat, around 750°C, regarding its reduction to silicon monoxide or elemental silicon?
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1answer
141 views

A Material that sticks to the skin, without adhesives!

I am onto a project for making knee braces for female anatomy, and I have been looking for a material, that i could line the pads with, that would stick to the skin of the players and still provide ...
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2answers
53 views

Why is the maximum % for a gold alloy 92%?

The assignment question is asking us to explain why you can't get more than 92% gold in a gold alloy, and I can't seem to find out why it's specifically 92% in either the textbook or online. Any ...
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49 views

Do these compounds Na$_x$IrO$_2$ and NaOsO$_2$ exist?

Based on some physics background, I want to know whether have we synthesized these two materials: $\ce{Na_{x}IrO2}$ and $\ce{NaOsO2}$ in the lab, if so, what properties do they have? I will be very ...
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1answer
50 views

What eco-friendly substance can I use to write and erase on a wall for UV glowing without detection in daylight?

I rent an office and want an alternative to a whiteboard and continual dry-erase marker purchases. I can shut out the light and use the surface under UV lamps only, that's fine. Commonly listed ...
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2answers
106 views

What type of sensor technologies exist to determine the chemical composition of a polymer?

Let's say I have several pieces of trash and each is made with a different type of material like: Plastic bottle : High Density Polyethylene (HDPE) Cereal box : Paperboard & Epichlorohydrin ...
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75 views

Chemistry Self Education [closed]

I want to learn chemistry. I did not have the benefit of studying it when I was in highschool, and I was always intimidated by it (I feel it's more rote memorization rather than understanding - I'm ...
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1answer
41 views

Rapidly cooling Aluminum vapour to solid state?

What sort of a microstructure would you get on bubbling Aluminium vapors through a large tank of Helium?Would it be a glassy microstructure and/or would you get nano-powders? and/or a new crystal ...
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1answer
132 views

A chemistry approach to environmentally friendly yoga mats… NBR, NR, TPE, PER [closed]

I'm currently seeking your expertise while creating a line of environmentally friendly yoga mats, and I apologize in advance if any chemistry knowledge of mine has been absent since college and I lack ...
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1answer
63 views

What is so special about quasicrystals?

Can whatever is special about quasicrystals be understood at A-Level standard or slightly above it? The material I saw online is either too layman or too advanced for me to follow. What practical uses ...
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1answer
25 views

Common flame-retardant plastic film materials?

More questions for my DIY hot air balloon: What are some very common (i.e. easy to purchase) plastic film materials that have very good flame-retardant properties? How is the "degree of flame ...
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52 views

Which Dispersing Agent is common and best for dispersing of $\ce{TiO2}$ pigments in produce of gouache?

I'm a mathematician who know nothing from chemistry. Even I don't know I should ask it here or another place. Below is a question of one of my friends. Please help me find him. Which Dispersing Agent ...
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189 views

Have we ever created artificial metals?

I really don't know anything about chemistry, but I was wondering about the following vague question: has any substance been created that does not contain any metallic elements, but is metallic? In ...
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1answer
114 views

chemically inert molecule with piezoelectric properties

For a research project, I'm looking into existing chemical molecules that have the following properties: It is mostly chemically inert, safe for animals and children It exhibits piezoelectricity - ...
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1answer
46 views

Suitability of liquid plastic resin for plumbing application

Which synthetic resins are suitable for fabrication of plumbing components e.g pipe sections? I'm trying to find an easy way to mold/house/encase a custom designed data logger. The water temperature ...
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1answer
321 views

How can one test if a ruby is real?

My friend recently bought a ruby gem from a store and asked me how to test whether its an original one or a duplicate. Are there any ways to test it using only domestic materials?
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99 views

Material that is flexible when cold but comes brittle when hot

I'm looking for a material that I can use to make a mesh netting. It should be flexible and have reasonable tensile strength when cold but brittle when hot (400+ degrees F). I want to use it to ...
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79 views

Consumer Report for Lab Equipment

I'm just wondering if anybody here knows of a Consumer-Report-like publication for lab equipment. Something that would give the specifics, as, for example, the flow rate of a distilling condenser, ...
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1answer
2k views

What is the maximum pressure that JB Weld can withstand?

JB Weld, a brand name of steel-reinforced epoxy, makes claims of being the "world's strongest bond". What is the maximum pressure it can withstand, and what is it about the interaction between the ...
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1answer
61 views

Can high-tin bronze be made sharper than low-tin bronze?

I am not sure how sharpness is measured, but I do know that certain materials can be designated sharper than others, for example obsidian is said to be the sharpest material: The prismatic glass ...
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1answer
833 views

Easily removable material that sticks to skin

I am looking for some kind of material that can be used to easily latch something to someone's finger. This is for a first year engineering project. The idea is to use this material to latch small ...
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1answer
554 views

Is there a point at which Ethanol (E10) fuel becomes harmful to gas tanks or engines if not used?

This is not the typical chemistry question on this website, but I think it's an important practical question. When I got a gas string trimmer, the woman who worked at the gardening shop told me that ...
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1answer
79 views

What barriers prevent plastic from becoming a fiber optic, data transmission medium?

This is a question that has bothered me for a while. In the past many years, no company has been able to develop a material that can transmit light nearly as well as fiber optic glass, or at least ...
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1answer
113 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 ...
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1answer
384 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 ...
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198 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 ...
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1answer
60 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 ...
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276 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 ...
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160 views

Clear HDPE Class 6 molding plastic?

I am creating Class 6 HDPE cutting boards, with some added features to it, so that they are not only definable as my creations, but in doing so I will carve some things into the back or front of the ...
2
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1answer
57 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 ...
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92 views

Material which fits certain required properties [closed]

I am currently trying to make something similar to a plasma globe, except it won't be spherical; it'll be in a rather weird shape (very similar to the shape of an elongated "3"). In addition, it must ...
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185 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 ...