Species plastics very much, but they are divided into two groups: thermosets and thermoplastics.
Therefore for quality repair of plastic products need to know what type of plastic they are made, it will help to determine how the adhesive to glue the plastic of a certain group.Even in this seemingly uncomplicated actually have their tricks.For example, plastic toys can be repaired using conventional soldering iron, but for karbalitovoy ashtray better to use adhesive for plastic brand BF-2.I propose to consider both groups in detail, to understand all the subtleties of bonding chopped details.
repair and bonding thermosetting
Objects of this type of plastic can not soften, melt and reshape, and if the item is broken, it can only glue.From this make plastic utensils, perfume jars, buttons, cases for mobile phones and cameras, sockets and plugs.All of these items can easily break or crack to the fall and need for repair adhesive for plastic brand BF-2 and BF-4, as well as nitrocellulose, polyvinyl chloride and polyvinyl acetate adhesives.
Bonding is carried out in several stages:
- kink thoroughly cleaned from dust and dirt, and be sure to degrease.To do this, the broken parts better rinse with hot water and soap.
- on carefully-dried surface of a thin layer of glue is applied and dried it, so it does not stick to your fingers.
- second layer of adhesive is also applied to both surfaces and allowed to stand for 1-2 minutes, then combine the parts and put under pressure.
- The drying process takes 3-4 days.
repair and bonding of thermoplastics
Plastics Group thermoplastics easily softened by heat and can melt under the action of certain solvents.This plastic is used in the manufacture of stationery pens, soap, combs, spectacle frames and children's toys.Previously, all of these items were made of combustible plastic celluloid, but now it is increasingly replaced by non-flammable cellulose acetate.And the one and the other plastic well soluble in acetone.Glue for this type of plastic you can do yourself, it will take the current to the desired type of plastic solvent (2 parts) and celluloid chips (1 part).The ingredients are mixed and stored in a container with a tight lid.
Bonding Thermoplastics differ from thermosets, it can be implemented in several ways:
1 way
Chopped parts lubricating effect on the plastic solvent, and wait until the edge of the split will become sticky, then the parts are folded and put under pressure to complete solidification.
2
method for bonding using nitrocellulose adhesive for plastic brand "Mars", "C-1" and "MC-1."
3 Way
edges, to be bonded, heated over a fire, or apply them red-hot metal, and then connect the softened edge detail.When heating is necessary to prevent burning, the seam was not dark.
So, to repair the thing lasts for a long time and has not lost the form, it is necessary to choose the best adhesive for this type of plastic.Because only properly selected adhesive provides a reliable connection.
