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Adhesive guide final A GUIDE TO www craftechind com - Adhesives for Di ?cult-to-bond Plastics www craftechind com info craftechind com info craftechind com blog CraftechIndNY company craftech-industries CWhat makes these plastics so di ?cult to bond Many

A GUIDE TO www craftechind com - Adhesives for Di ?cult-to-bond Plastics www craftechind com info craftechind com info craftechind com blog CraftechIndNY company craftech-industries CWhat makes these plastics so di ?cult to bond Many modern plastics are formulated speci ?cally to be anti-corrosive in speci ?c chemical and environmental conditions As a result these polymers also tend to be di ?cult to chemically bond because of their low surface energies low porosity and non-polar or non-functional surfaces They feature no functional site or surface roughness onto which an adhesive can secure itself In other words they are extremely smooth and slippery so there ? s nothing for the glue to grab onto Materials Lexan ? An amorphous polycarbonate polymer that o ?ers a unique combination of sti ?ness hardness and toughness It exhibits excellent weathering creep impact optical electrical and thermal properties Nylon ? A commonly used synthetic polymer because of good mechanical properties wear resistance and high melting point Nylon is frequently used when a low cost high mechanical strength rigid and stable material is required Objective Being able to e ?ectively bond two surfaces together can be useful in many situations Yet few adhesives o ?er consistently high bond strengths In order to steer you towards the best adhesives on the market we ? ve expanded our list of glues and plastics since our last blog post on the subject We tested the bonding capabilities of various glues that purport to be compatible with some of the most di ?cult-to-bond polymers We tried sticking each sample of plastics listed right to itself and after a -hour curing time we attempted to break the pieces apart to determine which glues worked best Read on for our results Te on PTFE ? A synthetic uoropolymer characterized by its excellent dielectric properties high melting temperature and non-reactivity Te on has one of the lowest coe ?cients of friction in the world of plastics Polyurethane ? An elastomeric material of exceptional physical properties including toughness exibility and resistance to abrasion and temperature It combines the toughness of metal with the elasticity of rubber Polypropylene ? A thermoplastic polymer that is rugged and unusually resistant to many chemical solvents bases and acids making it useful in a wide variety of applications www craftechind com - Polyethylene ? A thermoplastic with high impact resistance low density and good toughness This plastic is especially useful where moisture resistance and low cost are required CTECH BOND BP Blue ? A one-step cyanoacrylate solution engineered to bond with polymer strings quickly easily and permanently It creates a molecular bond which provides a stronger more durable result Our Results We were excited to try out this adhesive because the manufacturers boasted that their product was the solution to bonding hard- to-bond plastics For our ?rst attempt we left the plastics untreated and didn ? t roughen the surface with any kind of wire scrub or sandpaper After twenty-four hours of curing all of the plastics broke apart