Module 09 Paint dyes and other materials

Slide 1

Welcome health and safety today we will be discussing paints and dyes and other application products.

Slide 2

Paint is a colored substance applied to surfaces; It is a layer of dried pigment on a surface.

Slide 3

What’s in paint

• Pigment
• Binder
• Solvent

Slide 4

• Pigments can be
• Natural-Organic-biological
• Synthetic In-organic- chemical

Paint is a Dry coloring matter, usually an insoluble powder, to be mixed with water, oil, or another base to produce paint and similar products.

Slide 5

Pigments provide the texture and color to a surface. They usually take the form of a dry powder, and can be made from either synthetic or natural materials.

Slide 6

Binder- commonly referred to as the vehicle or glue; it is the actual film forming component of paint. It is the only component that must be present; The binder, binds the pigments together, and strongly influences such properties as gloss potential, exterior durability, flexibility, and toughness.

Slide 7

In waterborne coatings, the binder is usually a latex emulsion composed of vinyl or acrylic co-polymers.

Slide 8

In solvent-borne coatings, the binder is usually an alkyd, a natural drying oil modified chemically to be especially tough and long lasting.

Slide 9 Paint terminology

Soluble- dissolves easily in water

Insoluble– not capable of being dissolved.

Slide 10 Organic and inorganic

Organic-“hydrocarbons are organic compounds” being or relating to or derived from or having properties characteristic of living organisms

Inorganic-compounds not having a carbon basis. A mineral, not biological, origin.

Slide 11 A solvent is

a liquid substance capable of dissolving other substances

a liquid, solid, or gas that dissolves another solid, liquid, or gaseous solute.

can dissolve another substance

Slide 12

Latex paints cure by a process called coalescence where first the water, then the solvent, evaporate and draw together. The process will soften the latex binder particles and fuse them together into irreversibly bound structures so that the paint will not re dissolve in the solvent/water that originally carried it.

Slide 13

Oil based -resin with a solvent for dispersal

Water based- polymer finish; safer, water clean-up.

http://cfisher-courtneysblog.blogspot.com/2013/04/water-based-vs-solvent-based-paints-and.html

Slide 14 Casein

Because it is a natural substance, casein acts differently than vinyl acrylic based paints. One of the advantages of casein paint is its re wet ability. It is often helpful, when painting drops, to be able to reactivate the paint you laid down earlier.

Slide 15 Pigment

Pigments are granular solids incorporated into the paint to contribute color, toughness, texture or simply to reduce the cost of the paint. Alternatively, some paints contain dyes instead of or in combination with pigments. Pigments can be classified as either natural or synthetic types

Slide 16 Synthetic

man-made

not of natural origin

prepared or made artificially

Slide 17 Solvent in paint

The main purposes of the solvent are to adjust the curing properties and viscosity of the paint. It is volatile and does not become part of the paint film. It also controls flow and application properties, and affects the stability of the paint while in liquid state—once the solvent has evaporated or disintegrated, the remaining paint is fixed to the surface.

 

Slide 18 what in your paint?

Paints are formulated according to their proposed use – primer, undercoat, special finishes (matt, gloss, heat resistance, anti-corrosion, abrasion resistance).  The pigment powder is broken down into individual particles which are coated by and dispersed in the binder (resin) – known as ‘wetting out’.  Solvent is then added to give the required consistency. Each batch of ingredients is thoroughly mixed in large, stirred containers with the required additives

Slide 19 Resin

Polymer resin is a clear liquid plastic product that hardens to create a thick, durable, glossy coating. Once hardened, it is fade-proof and water-resistant. This type of resin is commonly used on furniture to seal finishes and create a durable, glass-like surface, and it’s also used in many other arts and crafts when the artist wants a thick, glossy coating.

Safety when using resin

Proper ventilation.  Make sure there is fresh air entering a room when working with resin.  Open a window or use a fan if necessary.

Wear disposable gloves.  I prefer to use nitrile gloves since they are less likely to react with the resin.  if you have super sensitive skin, you might consider coating your hands with a barrier cream first.

Wear protective clothing.  Generally, I am only pouring very small batches of resin and don’t worry about this, but if I was mixing up gallons of product to use on a large scale product, this would be essential.

Designate items as resin only.  Silicone baking molds can make great resin molds too, but once used for resin, they should not be used for food again.  The same goes for mixing containers and utensils.

Wear a respirator.  Some resins, including polyester and polyurethane, can be very dangerous.  Wear a NIOSH approved respirator and make sure it fits properly.

Wear safety goggles.  This is especially true if I’m working with a resin that I’m already wearing a respirator to work with or if I’m sanding resin where it puts lots of particles in the air.

Clean up spills immediately.  While it’s inconvenient to stop in the middle of a project to clean up a resin spill, it’s better than getting some on yourself later or having an unknowing person get it on him or herself.

When sanding resin, wear a particle mask or respirator.  For light sanding, a particle mask is probably sufficient, but if you’re using a belt sander, grinder or buffing wheel, a respirator may be more appropriate since the resin will be more aerosolized.

Exercise care with solvents.  If cleaning up a resin spill on the skin, don’t use a ketone or chlorinated based product.  This will only put the resin deeper into your skin.  Use only soap and water.

http://www.resinobsession.com/resin-resin-resin/safety-tips-for-working-with-resin

Slide 20  Dye

Soluble- will dissolve–

A dye can generally be described as a colored substance that has an affinity to the substrate to which it is being applied. The dye is generally applied in an aqueous solution, and may require a mordant to improve the fastness of the dye on the fiber.

All artists should use the following common sense safeguards:

Dye safety Tips

• Do not eat, drink, or smoke in areas where dyes and chemicals are used.
• Work in a well-ventilated area.
• If you experience an adverse symptom to anything, move away from the area to fresh air. If the symptoms persist, stop using the product & consult your physician.
• Wear a MSHA/NIOSH approved respirator with cartridges for dusts, mists, and fumes. Disposable dust/mist respirators don’t help with fumes.
• Even though dyes are not absorbed by the skin you should wear rubber gloves, old clothes or protective clothing, and even old shoes.
• Wear goggles when working with corrosive chemicals such as acetic acid and lye (you only have one set of eyes).
• Contact lens wearers should be careful around powders to avoid eye irritation.
• Cover your work area with dampened newspaper. Weigh and mix dyes and other powders with local exhaust ventilation or use a mixing box. See Helpful Information at right.
• Do not mix powders near furnace or air conditioner intake pipes.
• Use appropriate utensils to stir solutions and dye baths. If you use food utensils as dyeing tools don’t reuse them for food preparation.
• Avoid exposure to dye powders, auxiliary chemicals and vapors during pregnancy or lactation.
• Avoid prolonged or repeated contact with the skin.
• Vacuum floors and surfaces, do not sweep.
• Keep dye and auxiliary containers closed and in a cool dry place, away from food and out of the reach of children when not in use.
• Wipe up spills immediately. Liquid dye dried to a powder can be accidentally inhaled or ingested.
• Label dye container with purchase date.
• Clearly label all solutions and containers of powder. Do not remove the supplier’s name or hazard warning labels.
• Read all instructions and the SDS before handling dye.

https://www.prochemicalanddye.com/pages.php?pageid=10

Slide 21

Oxidizer—extremely flammable

• Pyro ingredient
• Dust can ignite from heat source or static discharge
• Safe storage essential

http://www.crescentbronze.com/uploads/site_53/list_57/pdf_1449686539_source.pdf

Slide 22

Spray Painting Safety

Spray painting is a common and effective way to protect and beautify parts, products, vehicles, and buildings. Spray painting allows coverage of large areas with even coats of primer, paint, sealers, and other coatings. However, workers in spray painting operations need to recognize and guard against the hazard associated with spray painting processes.

Hazardous chemicals in coatings and solvents can enter the body several ways. Workers can inhale chemical vapors from spraying, absorb the chemical by skin contact or inject the chemical with high pressure spray painting equipment.

Slide 22 for all the products discussed today:

• Read SDS
• Treat as a toxic substance
• Use water based product whenever possible
• Use exhaust ventilation when mixing powders
• Brush or dip before spraying
• Wear proper PPE
• Follow all clean-up instructions
• Store safely

Bibliography

https://www.osha.gov/dts/osta/otm/otm_iii/otm_iii_1.html

• http://cfisher-courtneysblog.blogspot.com/2013/04/water-based-vs-solvent-based-paints-and.html
• http://www.paintquality.com/en/understanding-paint/water-based-vs-solvent-based
• http://www.paintquality.com/en/advice-and-tips/safety
• http://www.paintquality.com/en/advice-and-tips/safety
• https://www.prochemicalanddye.com/pages.php?pageid=10
• https://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=10227
• http://www.gorillatough.com/sites/default/files/Gorilla%20Epoxy%20Resin%20-%20North%20America%20SDS.pdf