NOVADURAN can be recycled

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Issue Time: Aug 11,2020

Summary

As stated above, PBT will degrade in physicality by causing hydrolysis if heat history is received without enough drying, so the drying of fractured product need to be well considered when recycling.

Points of recycling

NOVADURAN can be recycled, but it might cause trouble if the direction is not good. As stated above, PBT

will degrade in physicality by causing hydrolysis if heat history is received without enough drying, so the drying of

fractured product need to be well considered when recycling. Also, in the case of GF reinforced grade, GF

fracture will occur when pulverizing, and degrade in strength when recycling tend to be bigger than the

unreinforced grade. Figure 4-1 to 4-8 indicate examples of physicality change when recycled NOVADURAN is

used.

Recycled material ratio of about 30% is possible in general NOVADURAN molding, if the direction is good

enough. If recycled material ratio goes over 30% or the water control of the recycled material is not good,

problem such as crack might occur. If the molded product is thin or have complex structure, often the mold

temperature will be high and large molding machine will be used, physicality degradation tend to occur when

molding, even if the drying is enough.

Figure 4-1 Tensile strength degradation of 5010R5 by recycling

Figure 4-2 Tensile strain decrease in 5010R5 by recycling

Figure 4-3 Viscosity degradation of 5010R5 by recycling

Figure 4-4 Impact strength degradation of 5010G30 by recy

Figure 4-5 Tensile strength degradation of 5010G30 by recycling

Figure 4-6 Tensile strain decrease in 5010G30 by recycling

Figure 4-7 Flexural strength degradation of 5010G30 by recycling

Figure 4-8 Flexural elasticity degradation of 5010G30 by recycling