UV-curable glass fiber sizing compositions
View Patent ↗UV-curable glass fiber sizing compositions, glass fibers sized with a UV-curable sizing composition, sizing methods, and composites comprising such UV-curable sized glass fibers are disclosed.
1. A UV-curable glass fiber sizing composition comprising:
a. a polyfunctional mercaptan;
b. a polyunsaturated alkene, wherein monomers of the polyunsaturated alkene include at least one of an allyltriazine and an acrylate alkene; and
c. a coupling agent.
2. The UV-curable sizing composition of claim 1 , wherein the polyfunctional mercaptan is a tetrathiol.
3. The UV-curable sizing composition of claim 1 , wherein the coupling agent is one of a silicon-, zirconium-, titanium-, and aluminum based coupling agent.
4. The UV-curable sizing composition of claim 1 , wherein the coupling agent is a silane-based coupling agent.
5. The UV-curable sizing composition of claim 4 , wherein the silane based coupling agent is one of a γ-aminopropyltriethoxysilane, a polysilazane, a γ-glycidoxypropyltrimethoxysilane, or a γ-methacryloyloxypropyltrimethoxysilane.
6. The UV-curable sizing composition of claim 1 , wherein the polyfunctional mercaptan is from about 20 weight % to about 80 weight % of said sizing composition.
7. The UV-curable sizing composition of claim 1 , wherein polyunsaturated alkene is from about 5 weight % to about 60 weight % of the sizing composition.
8. The UV-curable sizing composition of claim 1 , wherein said coupling agent is present in an amount from about 0.05 to 40 weight % of said sizing composition.
9. A method of sizing glass fibers with a UV-curable sizing composition, the method comprising:
a. preparing the UV-curable sizing composition of claim 1 ;
b. applying the UV-curable sizing composition to a surface of the glass fibers to form a coated surface; and
c. exposing the coated surface to UV radiation to cure the UV-curable sizing composition.
10. The method of claim 9 , wherein the sizing composition is applied after the glass fibers are formed.
11. The method of claim 9 , wherein the coated surface is exposed to UV radiation during a winding process.
12. A reinforced composite, comprising:
at least one glass fiber sized with the UV-curable sizing composition of claim 1 ; and
a resin material.
13. The reinforced composite of claim 12 , wherein the resin material is an epoxy resin.
14. A glass fiber sized with a UV curable sizing composition comprising:
a. at least 95 or more weight % glass; and
b. no more than 5 weight % of a UV-curable sizing composition, comprising:
i. a polyfunctional mercaptan;
ii. a polyunsaturated alkene, wherein monomers of the polyunsaturated alkene include at least one of an allyltriazine and an acrylate alkene; and
iii. a coupling agent.
15. The glass fiber of claim 14 , wherein said polyfunctional mercaptan is a tetrathiol.
16. The glass fiber of claim 14 , wherein said coupling agent is one of a silicon-, zirconium-, titanium- and aluminum-based coupling agent.
17. The glass fiber of claim 14 , wherein said coupling agent is a silane-based coupling agent.
18. The glass fiber of claim 17 , wherein the silane-based coupling agent is one of a γ-aminopropyltriethoxysilane, a polysilazane, a γ-glycidoxypropyltrimethoxysilane or a γ-methacryloyloxypropyltrimethoxysilane.
19. The glass fiber of claim 14 , wherein the polyfunctional mercaptan is from about 20 weight % to about 80 weight % of the sizing composition.
20. The glass fiber of claim 14 , wherein the polyunsaturated alkene is from about 5 weight % to about 60 weight % of the sizing composition.
21. The glass fiber of claim 14 , wherein the coupling agent is from about 0.05 weight % to about 40 weight % of the sizing composition.