摘要:
The object of the invention is a thermoplastic polymer composition susceptible to environmental degradation and/or organic recycling through composting, which is obtained entirely from compounds of natural origin, and a method for its manufacture. The composition according to the invention is obtained from polylactide (PLA) and from suitably modified thermoplastic starch (mTPS) obtained in the process of thermomechanical extrusion of a mixture of native starch (preferably potato and/or corn starch) with a suitable plasticizer (preferably glycerol), physical and mechanical, and chemical properties of which are additionally modified by compounds of natural origin, in the form of agar (AGR) and/or epoxidized vegetable oil (EOR), and/or by means of arabic gum (GA).
摘要:
The invention relates to thermoplastic polyurethane-rubber composite. The composite comprises, calculated on the total weight of the composite, from 19 to 90% wt. of thermoplastic polyurethane or thermoplastic cast urethane or thermoplastic polyurethene granulate and from 9.5 to 80% wt. of rubber granulate, and also comprises from 1 to 5% wt. of reactive modifier having in its structure reactive isocyanate or epoxide groups, which are activated at elevated temperature during further processing of the composite in a way of injection molding and/or extrusion. According to further variant of invention, polyurethane-rubber composite comprises, calculated on the weight of the composite, from 10 to 90% wt. of thermoplastic polyurethane or cast polyurethane elastomer with thermoplastic properties and from 10 to 90% wt. of rubber granulate.
摘要:
The invention relates to bitumen modifying agent, polymer modified bitumen, being modified by physical and chemical methods, and the methods for preparation of polymer modified bitumen. Polymer modified bitumen comprises bitumen and oil-rubber composition, obtained by mixing shredded waste rubber with castor oil, and also comprises crosslinking component with reactive isocyanate groups (NCO) in its structure. Polymer modified bitumen contains, calculated on the weight of polymer modified bitumen, bitumen in the amount from 77% wt. to 95% wt. and oil-rubber composition in the amount from 4% wt. to 20% wt., while content of particles of waste rubber is from 4% wt. to 18% wt., while castor oil is from 0,25% wt. to 3% wt.. The polymer modified bitumen additionally comprises crosslinking component in the form of compound with free isocyanate groups (NCO) in the amount from 0,25% wt. to 3% wt.
摘要:
The object of the invention is a thermoplastic polymer composition susceptible to environmental degradation and/or organic recycling through composting, which is obtained entirely from compounds of natural origin, and a method for its manufacture. The composition according to the invention is obtained from polylactide (PLA) and from suitably modified thermoplastic starch (mTPS) obtained in the process of thermomechanical extrusion of a mixture of native starch (preferably potato and/or corn starch) with a suitable plasticizer (preferably glycerol), physical and mechanical, and chemical properties of which are additionally modified by compounds of natural origin, in the form of agar (AGR) and/or epoxidized vegetable oil (EOR), and/or by means of arabic gum (GA).