Process for production of a composite
A composite part is produced by a process in which at least one of components a) and b) of said composite part is treated with an Openair plasma on a contact surface between said components a) and b) prior to production of the composite part, followed by molding-on of the other component; wherein said components are as follows: a) a part which entirely or to some extent comprises a molding composition comprising at least 40% by weight of a polyamide whose monomer units contain an average of at least 8 carbon atoms, and b) a part comprising another molding composition.
1. A process for production of a composite part, comprising:
treating at least one of components a) and b) of the composite part by a plasma process on a contact surface between the components a) and b) prior to production of the composite, followed by molding-on of the other component;
wherein:
component a) is a part comprising a molding composition comprising at least 40% by weight of a polyamide whose monomer units contain an average of at least 8 carbon atoms;
component b) is a part comprising another molding composition; and
in the plasma process, a plasma is generated inside of a plasma chamber and then carried out of the plasma chamber and on to the contact surface.
2. The process as claimed in claim 1 , wherein the polyamide of component a) is selected from the group consisting of PA6,10, PA6,12, PA6,13, PA6,3T, PA8,10, PA8,12, PA10,10, PA10,10, PA11, PA12, PA12,12, PA PACM12 and combinations thereof.
3. The process as claimed in claim 1 , wherein component a) comprises an additional layer which is adhesive-bonded to the molding composition based on polyamide.
4. The process as claimed in claim 1 , wherein component b) comprises a molding composition based on a polymer which is selected from the group consisting of PA6, PA6,6, PA6/6T, polyolefins, polyoxymethylene, ABS, polycarbonate, polyester, PMMA, PPS, thermoplastic elastomer, and mixtures thereof.
5. The process as claimed in claim 1 , wherein component b) comprises a compounded rubber material which is optionally vulcanized.
6. The process according to claim 5 , wherein the rubber material is vulcanized.
7. The process according to claim 5 , wherein the rubber material comprises a rubber selected from the group consisting of an EP(D)M rubber, an SB rubber, BR, NR, IR, IIR, CIIR, BIIR, NBR, CR, FPM, ACM, AEM or AECM, a styrene-containing block copolymer, a polyalkenylene and mixtures thereof.
8. The process according to claim 5 , wherein the compounded rubber material comprises from 0 to 300 parts by weight of fillers, from 1 to 10 parts by weight of vulcanizing agents, from 0 to 4 parts by weight of vulcanization activators, and from 0 to 200 parts by weight of plasticizers, based on 100 parts by weight of rubber.
9. A composite part produced by the process as claimed in claim 1 .
10. The composite part as claimed in claim 9 , which is an element of a system that conveys engine fuel, that conveys coolant fluid, or that conveys oil.
11. The composite part as claimed in claim 9 , wherein:
the composite is in the form of a sheet; and
component a) is in the form of a film.
12. The process according to claim 1 , wherein each of components a) and b) is selected from the group consisting of moldings, single layer films, multilayer films and textile structures.
13. The process according to claim 1 , wherein the polyamide of component a) is selected from the group consisting of polyetheresteramides, polyetheramides, copolyamides of polyetheresteramides, copolyamides of polyetheramides, and combinations thereof.
14. The process according to claim 1 , wherein component b) comprises a molding composition based on a thermoplastic polymer.
15. A composite part, comprising:
a) a part comprising a molding composition comprising at least 40% by weight of a polyamide whose monomer units contain an average of at least 8 carbon atoms, and
b) a part comprising another molding composition;
wherein at least one surface between parts a) and/or b) is activated by a plasma process in which a plasma is generated inside of a plasma chamber and then carried out of the plasma chamber and on to the at least one surface.
16. The composite part as claimed in claim 15 , wherein the polyamide of part a) is selected from the group consisting of PA6,10, PA6,12, PA6,13, PA6,3T, PA8,10, PA8,12, PA10,10, PA10,12, PA11, PA12, PA12,12, PA PACM12 and combinations thereof.
17. The composite part as claimed in claim 15 , wherein part a) comprises an additional layer which is adhesive-bonded to the molding composition based on polyamide.
18. The composite part as claimed in claim 15 , wherein part b) comprises a molding composition based on a polymer which is selected from the group consisting of PA6, PA6,6, PA6/6T, polyolefins, polyoxymethylene, ABS, polycarbonate, polyester, PMMA, PPS, thermoplastic elastomer, and mixtures thereof.
19. The composite part as claimed in claim 15 , wherein part b) comprises a compounded rubber material which is optionally vulcanized.
20. The composite part as claimed in claim 15 , wherein each of components a) and b) is selected from the group consisting of moldings, single layer films, multilayer films and textile structures.