Studies of the stabilization of Polish-made polytrioxane
The effect of different amounts of Irganox 259 (a phenolic stabilizer) and of Irganox 259/dicyanodiamlde mixtures o f various compositions on the thermal stability of a trioxane/dioxolane copolymer of POM type has been determined at 200, 220, and 240°C. The optimum composition of stabilizers mixture has been established. The effect of the commercial UV-stabilizers (Tinuvin 326 and Dastib 846 S) on the changes in mechanical strength properties of the thermally stabilized POM after accelerated ageing for 200, 400, and 600 h has been also determined and an advantageous action of these additives confirmed.
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