13-02-2020 дата публикации
Номер: US20200048043A1
Принадлежит:
A lifting member for an elevator system is disclosed, including a rope formed from a plurality of strands comprising liquid crystal polymer fibers, with the strands extending along a length of the lifting member. A first polymer coating is disposed on outer surfaces of the fibers or on outer surfaces of the strands. A second polymer coating disposed over the first polymer coating. 1. A lifting member for an elevator system , comprisinga rope formed from a plurality of strands comprising liquid crystal polymer fibers, said strands extending along a length of the lifting member;a first polymer coating on outer surfaces of the fibers or on outer surfaces of the strands; anda second polymer coating disposed over the first polymer coating.2. The lifting member of claim 1 , wherein the first polymer includes active groups selected from glycidyl claim 1 , carboxyl claim 1 , amino claim 1 , silane claim 1 , isocyanate claim 1 , amide or hydroxyl.3. The lifting member of claim 1 , wherein the first polymer coating comprises an acrylic polymer claim 1 , an epoxy polymer claim 1 , a urethane polymer claim 1 , silane grafted polymer claim 1 , melamine resins claim 1 , or acrylamide polymer.4. The lifting member of claim 1 , wherein the liquid crystal polymer comprises an aromatic polyester.5. The lifting member of claim 1 , wherein the strands comprise at least 50 wt. % liquid crystal polymer fibers claim 1 , based on total weight of the strands.6. The lifting member of claim 1 , wherein the strands further comprise fibers selected from carbon fibers claim 1 , glass fibers claim 1 , ultrahigh molecular weight polyethylene fibers claim 1 , polybenzoxazole fibers claim 1 , or polyamide fibers.7. The lifting member of claim 1 , wherein the second polymer coating comprises an elastomeric polymer selected from thermoplastic polyurethane claim 1 , polyamides claim 1 , olefins claim 1 , elastomers claim 1 , EPDM claim 1 , fluoropolymers claim 1 , chloropolymers claim 1 , ...
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