MULTICOMPOSITE REINFORCER
A multicomposite reinforcer (R 1, R 2 ) has improved mechanical properties and comprises at least: one or more monofilament(s) ( 1 0) made of glass-resin composite comprising glass filaments ( 101 ) embedded in a thermoset resin ( 102 ), the glass transition temperature of which, denoted Tg 1 , is greater than 150° C.; and individually covering said monofilament, each monofilament or collectively several monofilaments, a layer of a thermoplastic material ( 12 ), the glass transition temperature of which, denoted Tg 2 , is greater than 20° C. The multicomposite reinforcer can be used in a multilayer laminate, either of which can be used to reinforce pneumatic or non-pneumatic tires.
1 .- 25 . (canceled)
26 . A multicomposite reinforcer comprising:
one or more monofilaments made of glass-resin composite comprising glass filaments embedded in a thermoset resin, the glass transition temperature Tg 1 of which is greater than 150° C.; and
a layer of a thermoplastic material, the glass transition temperature Tg 2 of which is greater than 20° C., individually covering the one monofilament, each monofilament of the one or more monofilaments or collectively several monofilaments of the one or more monofilaments.
27 . The multicomposite reinforcer according to claim 26 , wherein Tg 1 is greater than 160° C.
28 . The multicomposite reinforcer according to claim 27 , wherein Tg 1 is greater than 170° C.
29 . The multicomposite reinforcer according to claim 26 , wherein Tg 2 is greater than 50° C.
30 . The multicomposite reinforcer according to claim 29 , wherein Tg 2 is greater than 70° C.
31 . The multicomposite reinforcer according to claim 26 , wherein the elongation at break Ar, measured at 20° C., is equal to or greater than 3.0%.
32 . The multicomposite reinforcer according to claim 31 , wherein Ar is equal to or greater than 3.5%.
33 . The multicomposite reinforcer according to claim 26 , wherein the initial tensile modulus E R20 , measured at 20° C., is greater than 9 GPa.
34 . The multicomposite reinforcer according to claim 33 , wherein E R20 is greater than 12 GPa.
35 . The multicomposite reinforcer according to claim 26 , wherein the initial tensile modulus E M20 , of the one or more monofilaments, measured at 20° C., is greater than 30 GPa.
36 . The multicomposite reinforcer according to claim 35 , wherein the E M20 is greater than 33 GPa.
37 . The multicomposite reinforcer according to claim 26 , wherein the real part of the complex modulus E′ 150 , of the one or more monofilaments, measured at 150° C. by the DMTA method, is greater than 25 GPa.
38 . The multicomposite reinforcer according to claim 37 , wherein the E′ 150 is greater than 30 GPa.
39 . The multicomposite reinforcer according to claim 26 , wherein the E′ (Tg1-25) / E′ 20 ratio is greater than 0.85, E′ 20 and E′ (Tg1-25) being the real part of the complex modulus of the one or more monofilaments measured by DMTA, respectively at 20° C. and at a temperature expressed in ° C. equal to (Tg 1 −25).
40 . The multicomposite reinforcer according to claim 39 , wherein the E′ (Tg1-25) /E′ 20 ratio is greater than 0.90.
41 . The multicomposite reinforcer according to claim 26 , wherein the compressive elastic deformation in bending of the one or more monofilaments is greater than 3.0%.
42 . The multicomposite reinforcer according to claim 41 , wherein the compressive elastic deformation in bending of the one or more monofilaments is greater than 3.5%.
43 . The multicomposite reinforcer according to claim 26 , wherein the compressive breaking stress in bending of the one or more monofilaments is greater than 1000 MPa.
44 . The multicomposite reinforcer according to claim 43 , wherein the compressive breaking stress in bending of the one or more monofilaments is greater than 1200 MPa.
45 . The multicomposite reinforcer according to claim 26 , wherein the weight content of glass fibres, in the one or more monofilaments, is between 60 and 80%.
46 . The multicomposite reinforcer according to claim 45 , wherein the weight content of glass fibres, in the one or more monofilaments, is between 65 and 75%.
47 . The multicomposite reinforcer according to claim 26 , wherein the thermoset resin is a vinyl ester resin.
48 . The multicomposite reinforcer according to claim 26 , wherein the initial tensile modulus of the thermoset resin, measured at 20° C., is greater than 3.0 GPa.
49 . The multicomposite reinforcer according to claim 48 , wherein the initial tensile modulus of the thermoset resin is greater than 3.5 GPa.
50 . The multicomposite reinforcer according to claim 26 , wherein the thermoplastic material is a polymer or a polymer composition.
51 . The multicomposite reinforcer according to claim 50 , wherein the polymer is a polyester.
52 . The multicomposite reinforcer according to claim 26 , wherein the initial tensile modulus of the thermoplastic material, measured at 20° C., is between 500 and 2500 MPa.
53 . The multicomposite reinforcer according to claim 52 , wherein the initial tensile modulus of the thermoplastic material is between 500 and 1500 MPa.
54 . The multicomposite reinforcer according to claim 26 , wherein the elastic elongation of the thermoplastic material, measured at 20° C., is greater than 5%.
55 . The multicomposite reinforcer according to claim 54 , wherein the elastic elongation of the thermoplastic material is greater than 8%.
56 . The multicomposite reinforcer according to claim 26 , wherein the elongation at break of the thermoplastic material, measured at 20° C., is greater than 10%.
57 . The multicomposite reinforcer according to claim 56 , wherein the elongation at break of the thermoplastic material is greater than 15%.
58 . The multicomposite reinforcer according to claim 26 , wherein the diameter D M of the one or more monofilaments is between 0.2 and 2.0 mm.
59 . The multicomposite reinforcer according to claim 58 , wherein the diameter D M of the one or more monofilaments is between 0.3 and 1.5 mm.
60 . The multicomposite reinforcer according to claim 26 , wherein the minimal thickness E m of the layer of thermoplastic material is between 0.05 and 0.5 mm.
61 . The multicomposite reinforcer according to claim 60 , wherein the minimal thickness E m of the layer of thermoplastic material is between 0.1 and 0.4 mm.
62 . A multilayer laminate comprising at least one multicomposite reinforcer according to claim 26 positioned between and in contact with two layers of rubber composition.
63 . A finished article or semi-finished product made of rubber comprising a multicomposite reinforcer according to claim 26 .
64 . A finished article or semi-finished product made of rubber comprising a multilayer laminate according to claim 62 .
65 . A vehicle tire comprising a multicomposite reinforcer according to claim 26 .
66 . The tire according to claim 65 , wherein the multicomposite reinforcer is present in the belt of the tire or in the carcass reinforcement of the tire.
67 . The tire according to claim 65 , wherein the multicomposite reinforcer is present in the bead zone of the tire.
68 . A vehicle tire comprising a multilayer laminate according to claim 62 .
69 . The tire according to claim 68 , wherein the multilayer laminate is present in the belt of the tire or in the carcass reinforcement of the tire.
70 . The tire according to claim 68 , wherein the multilayer laminate is present in the bead zone of the tire.