PROPERTIES OF FILLED ACETYL CELLULOSE ETHROLS
Issues of the production and the study of physical-mechanical properties of the filled cellulose acetate ethrolsare considered in this article. The cellulose triacetate plasticized with a mixture of dimethyl phthalate (DMP) and triphenyl phosphate (TPP) was used as the basis for the creation of ethrols. Wood flour (grades 180 and 300), flour of oat husk (grade 250), as well as flour of reed straw (grade 180) were usedas lignocellulosic fillers. Theethrol sampleswere prepared by extrusion. A filling of the ethrolswas also carried out by extrusion. Physical-mechanical parameters of filled cellulose ethrols, such as Brinell hardness, water absorption in 24 hours and 7 days, ultimate strength in bending, contact modulus of elasticity in compression, number of elasticity, ductility, and impact strength of filled cellulose ethrols have been established.Influence of the type, content and the average weighted diameter of the filler particles in the filler composites on the physical-mechanical parameters of filled cellulose ethrolswere examined. Thus, with an increase in content of wood flour, the hardness and tensile strength increase, the impact strength and ductility decrease, the composite with filler made of reed flour has high hardness.The composite with 20% wood flour content has high hardness(105 МPа), strength with bending (42 МPа),and low water absorption(1.9 wt.% in 24 hours).Since these properties are the most important competitive advantages of the material, this sample composition can be recommended for the production of finishing and body products. Rational values of technological factors for production of composite materials based on cellulose acetate ethrol fillers, such as wood flour, oat husk flour, and reed flour,were found. It has been established that a change in the content and fractional composition of the lignocellulosic filler will allow a wide variation in the operational properties of the resulting material.