Paint Definition and 102 Threads

Paint is any pigmented liquid, liquefiable, or solid mastic composition that, after application to a substrate in a thin layer, converts to a solid film. It is most commonly used to protect, color, or provide texture to objects. Paint can be made or purchased in many colors—and in many different types, such as watercolor or synthetic. Paint is typically stored, sold, and applied as a liquid, but most types dry into a solid. Most paints are either oil-based or water-based and each have distinct characteristics. For one, it is illegal in most municipalities to discard oil-based paint down household drains or sewers. Clean up solvents are also different for water-based paint than they are for oil-based paint. Water-based paints and oil-based paints will cure differently based on the outside ambient temperature of the object being painted (such as a house.) Usually the object being painted must be over 10 °C (50 °F), although some manufacturers of external paints/primers claim they can be applied when temperatures are as low as 2 °C (35 °F).

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  1. S

    Static electricity-spray paint and electrostatic precipitator

    Is paint a conductor of electricity? Since we charge the paint and let it move to the metal body of a grounded car so an opposite charge on the car. So when the paint reaches the car will the paint get discharged or will the charges on the car remain the same? Like the paint and the car body...
  2. E

    Does Chrome Paint Make a Good Mirror?

    So we are trying to make a conical mirror so that our camera can see 360 degrees around a robot. Our budget is not very big, and I found this chrome paint on http://www.alsacorp.com/products/mirrachrome/mirrachrome.htm that I thought might work, but I'm not sure. What do you think? Thanks...
  3. C

    How Does the Diameter of Constriction Affect a Paint Sprayer's Operation?

    Homework Statement A paint sprayer pumps air through a constriction in a 2.50-cm diameter pipe, as shown in the figure. The flow causes the pressure in the constricted area to drop and paint rises up the feed tube and enters the air stream. The speed of the air stream in the 2.50-cm diameter...
  4. M

    Would it hurt to memorize the trig ident in the paint doc?I am

    Would it hurt to memorize the trig ident in the paint doc? I am thinking if I do it will save me some time in the long run with integrating. Also, I know I've asked this question before but I can't seem to find my old post... can some one send me a link of important integrals to know, (not...
  5. wolram

    Are Paint Suppliers Overestimating the Amount of Paint Needed?

    Its time for me to do some decorating, the trouble is i all ways seem to need twice as much paint as the suppliers recommend, am i using the wrong method of putting paint on a wall, or are the recommended spread for paint bull s--it
  6. K

    Three colors to paint each side of a square, how many different squares?

    Homework Statement If you have a square and can paint each side with one of three different colours, how many completely different arrays can you get? (rotated squares don't count) Homework Equations The Attempt at a Solution I was thinking 3^4 / 4 but, that is not an integer, (3^4 - 1) / 4...
  7. D

    Create Cool Shapes with MS Paint: Math & Fun?

    hello. to be clear, my math is very bad and i used to hate it in school (hmm maybe not the best way to start ..) .. anyway, while i had a lot of spare time and nothing to do except playing around with windows paint (don't ask why), i found a cool technique which generates nice shapes, which, i...
  8. C

    How can i calculate the exact amount of heat absorbed by a black paint?

    Homework Statement Hi. Knowing the LRV, heat source and all other relevant details, how can we deduce the exact temp rise with black colour (or any other colour for that matter)?? The Attempt at a Solution i think just like we do for metals, if we know the heat absorption coefficient...
  9. C

    How can i calculate the exact amount of heat absorbed by a black paint

    Hi. Knowing the LRV, heat source and all other relevant details, how can we deduce the exact temp rise with black colour (or any other colour for that matter)??
  10. S

    Invisible paint? is it possible?

    Hi is it possible(and exist for buying) invisible paint? such that with a camera and specific filter only i can see it? i need it for outdoor, draw on a road like for example and be able to see it with the camera from about 500 meters .. sry for my bad english.. thanks for help
  11. Ranger Mike

    Can Disappearing Spray Paint Solve Laser Scanning Issues on Shiny Headlights?

    i have a red light laser measuring device. the application is to scan automobile head light assemblies for contour and size relative to the CAD model. The mounting lugs and plastic on the back of the assembly is easy to measure, the shiny front is a problem in that it scatters laser light and...
  12. J

    Delhi Shower: Black or White Paint?

    Back when I was a youngling, I was down in Delhi, tobacco picking. Our shower consisted of a 50 gallon drum with a faucet and showerhead sitting in the greenhouse. We painted the outside of it black to collect the heat and painted the inside white to radiate it. In retrospect I'm thinking we...
  13. S

    Grivory GV-5H - Can I paint it?

    I have some parts made of Grivory GV-5H ( http://www.matweb.com/search/datasheettext.aspx?matguid=63adc46228f445d7b313dd4ac0fd8060" ) I have a Sharpie White-Out pen that I want to make some markings with on the Grivory parts. The white-out is oil based. Would this affect the Grivory at all?
  14. R

    What Is the Angular Acceleration and Distance Traveled by the Paint Splotch?

    Homework Statement A flywheel rotates at a rate of 20 rpm. A motor provides a constant angular acceleration so that 30 s later it turns at a rate of 70 rpm. There’s a tiny splotch of paint on the flywheel, located 0.10 m from its center. During the acceleration period, what is the angular...
  15. r-soy

    How Do You Determine Paint Thickness from Volume and Area?

    One gallon of paint (volume = 3.78 x 10-3 m3) covers an area of 25.0 m2 . What is the thickness ofthe fresh paint on the wall? I want the concept to solve ?
  16. Z

    How does a bottle of paint spray work?

    Like there is pressure in the bottle, and when you push on the lid it releases pressure shooting the spray out of the bottle? Isn't that called diffusion? When pressure moves things around to equal out everything?
  17. H

    How can I make a word appear on a canvas using paint and water?

    cool word appearing in paint project I'm doing a video and I thought it'd be cool to make a specific word appear on a canvas. My idea was to give the illusion that I brushed a horizontal line of paint on the top of the canvas and the paint runs down the canvas forming the word (in an eerie type...
  18. T

    MATLAB Translating curves in paint to matlab

    Hi, I am currently using MATLAB to do some work on simple closed curves in the plane. In order to make this work quite general I have opted to use a matrix which stores (x,y) coordinates of points on my curve (rather than use a function). I want to feed some interesting curves into my code...
  19. B

    Find High Emissivity Paint for Accurate Infrared Temperature Measurements

    I'm supposed to measure temperature with an infrared camera. But when used on materials such as gold and aluminum or iron I get false readings (the emissivity is low). To solve this problem I figured I would need a paint that gives the surface high emissivity (low-reflective). My question...
  20. G

    How does color shifting paint work?

    There's not a whole lot of info that I could find. Something about metallic particles and light wave shifting. I was hoping someone here knew more and could elaborate. Thank you in advance.
  21. M

    Attn: Artsy People, Re: Acrylic Paint

    Not sure where to post this, but either way. While running out of Christmas ideas this year, I had what I thought was a fantastic idea. The idea was hand-painted champagne glasses. I thought that I had a novel idea that would give some impressive results. I did some research and it seemed as...
  22. B

    Latest Paint Technology Software and Info

    Please can someone give me any latest soft ware or info on paint tainting and technology.
  23. S

    Differentials and paint needed problem

    Homework Statement Use differentials to estimate the amount of paint needed to apply a coat of paint 0.05cm thick to a hemispherical dome with diameter 50m Homework Equations A= 2(pi)r2 The Attempt at a Solution dr=0.0005 m r=25m dA=? (A=2(pi)r2)' dA= 4(pi)r*dr I won't go any further...
  24. T

    Best paint for solar heat absorbtion?

    Hi, first-time poster. I hope this is the right area for this topic. It looks like this is the place to find smart people to give me good answers (I haven't seen any good forums dedicated to DIY solar heaters). Ok, I'm going to start building a solar air heater and I'd like to pick the best...
  25. D

    Endothermic Paint: Absorbing Heat and Keeping Cool

    Ok so there's this paint that has been produced which contains small glass beads. When painted on to a wall it acts as insulation. Very good insulation in fact. I was listening to a radio show where a person was talking about it and he described that it was endothermic in nature. Now i know what...
  26. D

    What is the feasibility of using laser pointers to paint the moon?

    I ran across this site from 2001: http://www.afineline.org/projects/paint.html Apparently it didn't work very well. Anybody care to guess what kind of equipment it would take to make a red splotch appear on the moon to the naked eye from earth?
  27. Ivan Seeking

    Paint your roof white to reduce global warming

    http://www.timesonline.co.uk/tol/news/environment/article6366639.ece That should read that it would yield the same benefit as removing all of the cars for 11 years... https://www.youtube.com/watch?v=pLlxjYACa5U
  28. J

    Can High Emissivity IR Paint Solve Pyrometer Accuracy Issues on Steel Surfaces?

    I'm having problems measuring the temperature of a steel surface with varying emissivity with a pyrometer. So I thought one way to overcome the varying emissivity is to paint the surface with a paint that has a high uniform emissivity in the IR region. The paint should: Have high...
  29. C

    Paint Statue that changes color with weather/airpressure

    Hello all, I Found an old keepsake when I recently moved that I bought in Italy 15 years ago. It was a small statue of an owl that changed color when the weather was changing. It would be pink, blue most often or sometimes green. That statue itself didn't change, but rather it was the paint...
  30. I

    Please: Find the angles, magnification, total length of the roometc. of paint-

    URGENT please: Find the angles, magnification, total length of the roometc. of paint- Homework Statement The well known 17th Century Dutch painter Johannes Vermeer only painted 30 paintings during his life. However, they were created with incredible, almost photographic-like detail. The use...
  31. B

    Solve Paint Can Problem: Red-White Content & Same Shade of Pink

    There are two 1-gallon (4 quarts) cans. One contains 4qt of white paint, and the other contains 3qt of red paint. You pour 1 qt of white paint into the red, mix it, and then pour 1 qt of the mixture back into the can of white paint. What is the red-white content of each can now? If you...
  32. Saladsamurai

    Spackle Over Paint? Tips & Advice to Get the Job Done

    Like it says, I didn't do as hot a job on spackling the area of my hallway and you can see where the perimeter of a big rectangular patch of sheetrock is now that I have painted the wall! I thought that I blended it enough, but the patch and the wall just weren't flush enough. Can I...
  33. BobG

    Paint My Bathroom - Repairs, Priming, and Choosing Colors

    The plan was to strip the wallpaper out of the bathroom last Saturday, prime the walls on Sunday, and paint the walls this Saturday. Unfortunately, stripping the wallpaper off revealed some pretty bad damage to the wall above the shower and a different corner badly repaired (due to a leak in...
  34. U

    What is the Speed of a Paint Bucket System Using Conservation of Energy?

    Conservation of Energy Homework Statement A system of two paint buckets connected by a lightweight rope is released from rest with the 12.0 kg bucket 2.00 m above the floor. Using the principle of conservation of energy to find the the speed with which this bucket hits the floor. You can...
  35. D

    Can You Share Tips for Applying Semi-Gloss Paint on Metal Parts?

    Does anyone know any tricks of the trade for painting Aluminum and Steel parts with a sem-gloss paint?
  36. K

    Paint on cars that change colour

    i was wondering what this type of paint (the type you see on cars that changes colour as the car moves around) is called? and more importantly, how it works? is it just the different shades of light that reflect the different colours?
  37. S

    Final Velocity of Falling Paint Can

    Homework Statement A painter is standing on scaffolding that is raised at constant speed. As he travels upward, he accidentally nudges a paint can off the scaffolding and it falls a distance [H1] to the ground. You are watching, and measure with your stopwatch that it takes a time of [T] for...
  38. W

    How Much Paint Is Needed for a Hemispherical Dome?

    Homework Statement Use linear approximation to estimate the amount of paint in cubic centimeters needed to apply a coat of paint 0.100000 cm thick to a hemispherical dome with a diameter of 45.000 meters. Homework Equations Surface Area of sphere=4\pi(r^2) Since it is hemipshereical, the...
  39. wolram

    Did I Buy the Wrong Paint Colors for the Office?

    Last week i was asked to buy paint for the offices, after about 2hrs fafing about they decide on beige walls and cream doors, well the paint came yesterday ,and i have a note saying i bought the wrong colours, the colour is written on the tins B E I G E and C R E AM, some people :rolleyes:
  40. M

    Material to dissolve enamel paint

    hi, I spray with my keyboard with Spray paint ( i think is enamel paint ) and now i am regret - so i need a solution to dissolve it but i can't remember the name , can anyone tell me ? thanks
  41. M

    Calculating Paint Volume for a 100x100 Block Structure

    Please help (wrote the question wrong) please help Me and my friend have this question we were asked and we don't know it but if you have 100 blocks by 100 blocks 97cm wide 97cm deep 93 cm tall. 1 liter of paint covers 3 square meters how many liters of paint would you need rounded up...
  42. Mk

    Michelangelo Paint: Find Info Here!

    Can someone help me find information about Michelangelo's paint? I know this is a kind of a weird topic but thanks you VERY much. :smile:
  43. Ivan Seeking

    Fiber art: A new alternative to paint?

    This human interest story caught my attention. Could this be a new art form? http://www.lubbesmeyerstudio.com/_media/popups_and_thumbnails/l_poppies.jpg http://www.lubbesmeyerstudio.com/
  44. B

    Average Number of Fill Commands Needed to Turn a Billion Pixel Screen White

    You know how the fill tool in Paint works. If you have a really large computer screen (a billion pixels, say) and you fill each pixel in the screen randomly either black or white (equal probability either one), what is the average number of times you would have to use the fill command for...
  45. K

    Is a DIY Low-Heat Flame Device Safe for De-icing Cars?

    High...I'm a hardy Minnesotan which also means I go through some harsh winters. The ice on my car always freezes pretty thick at school. That being said, I want to invent some sort of cool-looking low-heat flame device to basicaly melt the ice very very fast. So I was wondering: 1. What...
  46. C

    Paint My Nike Air Force 1's - Tips & Tricks

    Hi all, I am wondering, I have a new pair of Nike Air Force 1's http://www.kicks4less.com/images/AF1157.jpg {these are not the same exact color, my blue is navy blue but u get the point) , I do not like the color of the part above the middle of my foot, where it is like bluish. It is like a...
  47. B

    Paint thinner, oil, and water in a jar

    If I was to put paint thinner, oil, and water in a jar (individually..not together)...and then stirred, which one would have the biggest vortex (depth)? I know I can do it, and I will for the other two, but don't have paint thinner. and what type of intermolecular bonding is present in each...
  48. T

    Calculating Mu for Unacceptable Dye Discharge in Paint

    OK, here is the question... its probably simple but i can't figure it out. A machine used to regualte the amount of dye dispensed for mixing shades of paint can be set so that it discharges an average of mu milliliteres(mL) of dye per can of paint. The amount of dye discharged is known to...
  49. J

    Fluorescent Paints: Chemical Structure & Invisible Application

    What is general chemical structure of fluorescent paints (one’s that are invisible except when radiated with UV light). I’m especially interested in this because I would like to maybe paint something on walls of my room invisibly, but seen under UV lamp (cool, a ?:)). :biggrin: But I...
  50. ceptimus

    Can Painter Mix Paint in Tin and Pint Glass?

    A painter has a gallon tin (eight pints) full of yellow paint and another gallon tin half full of blue paint. He wants to mix the paints together so he can paint a room green. He reckons he will need at least 10 pints of paint to cover the walls. Unfortunately, he doesn't have a mixing vessel...
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