Professional Polymer Technology
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Adhesive is an essential tool to bond items together no […]
Adhesive is an essential tool to bond items together no matter where you work. However, you may be frustrated to find that your glue is not as sticky as it should be, leading to sub-par work, which may be because of the current temperature as temperature and other atmospheric influences impact the stickiness of adhesive.
Household glues are effective in temperatures between 38 and 60 degrees Fahrenheit. However, when the temperature drops below this range, the glue has a tendency to crack, producing a "glue line" and losing some of its stickiness. What’s more? The adhesive can freeze when the temperature comes to below freezing so that you need to reheat and reapply before it becomes sticky again.
Similarly, most glues will not work in temperatures above 60 degrees Fahrenheit. At this range, they are still sticky; however, they are unlikely to dry properly, or at all, depending on the relative humidity of the environment. Hot glue needs a hot glue gun to work with and it works at temperatures around 300 degrees Fahrenheit.
While glue needs to be used under very specific temperature conditions to have the optimal stickiness, other products have a wider range of uses. For example, you can use contact cement, rubber cement and other cement products to bind a range of objects while hot glue works well for items that need a strong bond that is non-temperature dependent after the initial application at high temperatures.
You can use hot melt adhesive to bond materials like fabric, fiber and wood, as well as ceramic and pottery. Hot adhesive is the preferred adhesive for handicrafts because it cures instantly. However, hot adhesive does not stick to hard plastic and smooth or laminate surfaces.
Choose construction adhesive like contact cement, Loctite and Liquid Nails for construction projects like gluing drywall, paneling and mirrors, as well as installing toilet fixtures and ceramic tile. Silicone sealant is best for strong and waterproof bonding of glass. A wide assortment of construction glue is available at home improvement stores for all types of home projects.
Most homes are full of breakable plastic items that sometimes need repair, but because plastic is a non-porous, smooth material, gluing the pieces back together can be challenging. Some adhesives that work with wood, such as polyvinyl acetate -- carpenter's glue -- don't adhere well to plastic, while others, such as epoxy resin, may not be flexible enough. Moreover, different adhesives have different functions.
The list of plastics you may find around your house is extensive. The plastic in your plumbing pipes is different from the composition of your plexiglass appliance covers, and both of these differ from the soft and molded plastics in toys and furniture. Before gluing one plastic item to another or a broken piece back together, therefore, it's important to know from what types of plastic the items are made. Some glues work by partially dissolving the material you spread them on, and they won't dissolve all types of plastic. Other glues form a purely mechanical bond, but adhere does well to a few types of plastic than others.
Plastic pipe cement is a combination of plastic resin dissolved in a solvent, and because the solvent dissolves the materials you're bonding, it's called solvent-weld adhesive. There are some special types designed for PVC pipes while others are only for ABS pipes, and you can also buy an all-purpose variety that works on both types of plastic. Plastic pipe cement is volatile, and it momentarily softens the surfaces on which you use it so they fuse together. This pipe cement is only for use with tight-fitting plumbing joints and, when used correctly, produces leak-proof connections.
The solvent-weld strategy also works when joining acrylic plastic sheets, but the products are slightly different. These gluing products, usually identified as plastic-weld or weld-on plastic adhesives, soften the materials you're joining so they fuse together after you clamp them for several hours. In some situations, you can apply liberal amounts of acetone to weld acrylic -- a powerful solvent -- to both parts that you want to join. Silicone caulk forms a strong mechanical bond on acrylic plastic and effectively holds sheets together. It also holds acrylic plastic to other materials, such as wood, concrete and glass. click http://www.joyachem.com/ to see more information.