IPC分类号：
D01D11/06 | B33Y70/00 | D01F9/12
国民经济行业分类号：
C2823 | C2822 | C2832 | C2821 | C2831 | C3551 | C2829 | C2826 | C2825 | C2824
当前申请(专利权)人：
LUXEMBOURG INSTITUTE OF SCIENCE AND TECHNOLOGY (LIST)
原始申请(专利权)人：
LUXEMBOURG INSTITUTE OF SCIENCE AND TECHNOLOGY (LIST)
当前申请(专利权)人地址：
5, avenue des Hauts-Fourneaux,4362 Esch-sur-Alzette LU
发明人：
BERTHE, VINCENT | PERRIN, HENRI | VAUDEMONT, RÉGIS
摘要：
The invention relates to a filament (36) for an additive manufacturing application or a winding application, the filament comprising fibers (38) embedded in a reactive thermoplastic resin (40) comprising of (meth)acrylic polymer, (meth)acrylic monomer and organic peroxides, said filament further comprising a tie layer (44) coating the reactive thermoplastic resin, the tie layer being constituted by a reactive blend of: at least a polyamide and a reactive copolymer, said reactive copolymer comprising a reactive (meth)acrylic polymer containing acids and/or anhydrides. The invention also relates to a use of the filament for manufacturing an end product by an additive manufacturing process or by a winding technique. The invention also relates to a method for manufacturing such a filament. The invention enables a high-speed production (10 meters per minute) of a filament of high quality.
权利要求：
Claims
1 . Filament (36) for an additive manufacturing application or a winding application, the filament (36) comprising fibers (38) embedded in a reactive thermoplastic resin (40) comprising (meth)acrylic polymer, (meth)acrylic monomer and organic peroxides, said filament (36) further comprising a tie layer (44) coating the reactive thermoplastic resin (40), the tie layer (44) being constituted by a reactive blend of: at least a polyamide and a reactive copolymer, said reactive copolymer comprising a reactive (meth)acrylic polymer containing acids and/or anhydrides.
2. Filament (36) according to claim 1 , characterized in that the polyamide is polyamide 6 or polyamide 12 or a mixture thereof, said polyamide constituting 20 to 80 wt % of the tie layer (44).
3. Filament (36) according to any of claims 1 or 2, characterized in that the reactive (meth)acrylic polymer comprises poly(methyl methacrylate-co-methacrylic acid).
4. Filament (36) according to any of claims 1 -3, characterized in that the reactive (meth)acrylic polymer comprises poly(methyl methacrylate-co-methacrylic acid- co-di-methyl-glutaric anhydride).
5. Filament (36) according to any of claims 1 -4, characterized in that the weight ratio of polyamide particles to (meth)acrylic polymer particles is 0.25: 1 to 4: 1 and preferably 1.5:1.
6. Filament (36) according to any of claims 1 -5, characterized in that the (meth)acrylic polymer particles have an average size diameter (D50) of 0.1 pm to 10 pm, preferably from 2 pm to 8 pm.
7. Use of the filament (36) of any of claims 1 to 6 for manufacturing an end product (60) by an additive manufacturing process or by a winding technique.
8. Use according to claim 7, characterized in that prior to a deposition of the filament (36) to form the end product (60), the filament (36) is wrapped in a shell material (62) made of polyamide.
Use according to claim 8, characterized in that the polyamide of the shell material (62) is polyamide 6 or polyamide 12 or a mixture thereof, said polyamide forming at least 90 wt % of the shell material (62). Product (60) obtained by the use of the filament (36) in accordance with any of claims 7 to 9. Method (100) for manufacturing a filament (36) aimed to an additive manufacturing application or a winding application, the method comprising:
(S102) providing a thread of fibers (38);
(S104) impregnating the thread with a liquid reactive thermoplastic resin (40) mainly composed of (meth)acrylic polymer, (meth)acrylic monomer and organic peroxides; and
(S106) co-extruding a tie layer (44) of thermoplastic compound around the impregnated thread (42); wherein the compound is constituted by a reactive blend of: at least a polyamide and a reactive copolymer, said reactive copolymer comprising a reactive (meth)acrylic polymer containing acids and/or anhydrides. Method (100) according to claim 11 , characterized in that the thermoplastic compound comprises a compatibilizer in an amount of 1 to 20 wt % in the tie layer (44), said compatibilizer is made of a reactive (meth)acrylic polymer or poly(styrene-co-glycidyl methacrylate) or poly(ethylene-co-methyl acrylate-co- glycidyl methacrylate). Method (100) according to any of claims 11 or 12, characterized in that the thermoplastic compound is co-extruded at a rate of about 10 meters per minute.