Anti-ageing matt polyurethane composition and preparation method thereof
A technology of polyurethane and composition, which is applied in the field of aging-resistant matte polyurethane composition and its preparation, and can solve the problems of poor long-term aging resistance, easy cross-linking or fracture, and poor long-term aging resistance of wires and cables.
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[0024] Example 1
[0025] An anti-aging matte polyurethane composition, comprising the following components by weight:
[0026]
[0027] The thermoplastic polyurethane is polyester polyurethane.
[0028] The matting agent is styrene block copolymer (SEBS).
[0029] The amino-terminated polyether is polyetheramine D-2000
[0030] The vulcanizing agent is sulfur.
[0031] The graft is an acrylate-maleic anhydride graft.
[0032] The softening agent is naphthenic rubber oil.
[0033] The matting agent is white carbon black
[0034] The processing aid is organosilicone.
[0035] The preparation method of the anti-aging matte polyurethane composition includes the following steps:
[0036] 5) Weigh the components according to the formula and mix them evenly;
[0037] 6) Put the mixture into a twin-screw extruder, melt and extrude at 160-180°C and rotate at 350 rpm, cut pellets, and pack.
Example Embodiment
[0038] Example 2
[0039] An anti-aging matte polyurethane composition, comprising the following parts by weight:
[0040]
[0041]
[0042] The thermoplastic polyurethane is a polyether polyurethane
[0043] The matting agent is selected from styrene-ethylene-propylene-styrene block copolymer (SEPS).
[0044] The amino-terminated polyether is polyetheramine T-3000.
[0045] The graft is an acrylate-maleic anhydride graft.
[0046] The softener is white mineral oil.
[0047] The matting agent is talc.
[0048] The processing aid is a mixture of organosilicone and zinc stearate.
[0049] The preparation method of the anti-aging matte polyurethane composition includes the following steps:
[0050] 7) Weigh the components according to the formula and mix them evenly;
[0051] 8) Put the mixture into a twin-screw extruder, melt and extrude at 160-180°C and rotate at 400 rpm, cut pellets, and pack.
Example Embodiment
[0052] Example 3
[0053] An anti-aging matte polyurethane composition, comprising the following parts by weight:
[0054]
[0055] The thermoplastic polyurethane is polycarbonate thermoplastic polyurethane.
[0056] The matting agent is selected from acrylic rubber.
[0057] The amino-terminated polyether is polyetheramine T-3000.
[0058] The vulcanizing agent is sulfur.
[0059] The graft is an acrylate-maleic anhydride graft.
[0060] The softener is selected from paraffin-based rubber oils.
[0061] The processing aid is stearic acid.
[0062] The matting agent is calcium carbonate.
[0063] The preparation method of the non-aging resistant matte polyurethane composition includes the following steps:
[0064] 9) Weigh the components according to the formula and mix them evenly;
[0065] 10) Put the mixture into a twin-screw extruder, melt and extrude, cut pellets, and pack at 160-200°C and rotating speed 200-500rpm.
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