The present invention provides a method for manufacturing an optical fiber base material and an optical fiber base material, the method including: arranging a rod containing SiO.sub.2 family glass for core, in a container; pouring a SiO.sub.2 glass raw material solution for cladding layer and a hardener into the container, the glass raw material solution containing a hardening resin; solidifying the glass raw material solution through a self-hardening reaction; and then drying the solidified material and heating the solidified material in chlorine gas, to manufacture an optical fiber base material in which a SiO.sub.2 cladding layer is formed in an outer periphery of the rod containing SiO.sub.2 family glass for core.

The present invention relates to fiber glass strands, yarns, fabrics, composites, prepregs, laminates, fiber-metal laminates, and other products incorporating glass fibers formed from glass compositions. The glass fibers, in some embodiments, are incorporated into composites that can be used in reinforcement applications. Glass fibers formed from some embodiments of the glass compositions can have certain desirable properties that can include, for example, desirable electrical properties (e.g. low D.sub.k) or desirable mechanical properties (e.g., specific strength).

The invention is concerned with filled multifilament yarn according to the present invention whereby the filler ratio, , in the yarn is greater than 0.004 times the IV of the UHMWPE present in the multifilament yarn (IV.sup.Y.sub.UH), i.e. 0.004 g/dL*IVy.sub.H* and whereby the tenacity (TEN, in cN/dtex) of the filled multifilament yarn is such that TENIV.sup.Y.sub.UH*(1.5-3.25*), or whereby the tenacity of a filled monofilament in the yarn is tenIV.sup.Y.sub.UH*(2-4.35*.sub.X). The invention is further concerned with a method to manufacture said multifilament yarn and articles comprising said multifilament yarn.

A method of producing a temperature regulating article is disclosed. The method includes combining a functional polymeric phase change material with a substrate. The functional polymeric PCM has the capability of absorbing or releasing heat to adjust heat transfer at or within a temperature stabilizing range and having at least one phase change temperature in the range between 10 C. and 100 C. and a phase change enthalpy of at least 5 Joules per gram, the functional polymeric PCM has a backbone chain, side chains, and a crystallizable section. The side chains form the crystallizable section. The functional PCM carries at least one reactive function on at least one of the side chains or the backbone chain. The reactive function is capable of forming at least a first covalent bond with the second material or with a connecting compound capable of reacting with reactive functions of the second material.

The method includes the steps of functionalizing a polyaryletherketone (PAEK) polymer, and blending the PAEK polymer with water to form a sizing composition. The method may further include the step of applying the sizing composition to a fiber. The method may further include the step of heating the fibers, coated with sizing composition, for example to between 300 C.-400 C. In some methods, the functionalized PAEK polymer comprises functionalized polyetherketoneketone (PEKK). In yet other methods, the functionalized PAEK polymer comprises sulfonated PEKK (sPEKK).

Fibers sized with a coating of amorphous polyetherketoneketone are useful in the preparation of reinforced polymers having improved properties, wherein the amorphous polyetherketoneketone can improve the compatibility of the fibers with the polymeric matrix.

The method includes the steps of functionalizing a polyaryletherketone (PAEK) polymer, and blending the PAEK polymer with water to form a sizing composition. The method may further include the step of applying the sizing composition to a fiber. The method may further include the step of heating the fibers, coated with sizing composition, for example to between 300 C-400 C. In some methods, the functionalized PAEK polymer comprises functionalized polyetherketoneketone (PEKK). In yet other methods, the functionalized PAEK polymer comprises sulfonated PEKK (sPEKK).

The method includes the steps of functionalizing a polyaryletherketone (PAEK) polymer, and blending the PAEK polymer with water to form a sizing composition. The method may further include the step of applying the sizing composition to a fiber. The method may further include the step of heating the fibers, coated with sizing composition, for example to between 300C-400C. In some methods, the functionalized PAEK polymer comprises functionalized polyetherketoneketone (PEKK). In yet other methods, the functionalized PAEK polymer comprises sulfonated PEKK (sPEKK).

A method of producing stretchable conductive nanofibers includes: providing stretchable nanofibers; providing a metal precursor solution by dissolving metal precursors in a solvent that may swell the stretchable nanofibers; bringing the stretchable nanofibers into contact with the metal precursor solution or its vapor for a sufficient time for the metal precursors to penetrate into the stretchable nanofibers; and reduce the metal precursors inside the stretchable nanofibers to metal nanoparticles.

The invention relates to a method for producing a fibrous composite material using at least one epoxy resin and at least one initiator comprising one or more cationic metal olefin complexes. The invention further relates to a fiber-containing agent and to a fiber-containing composite material as such.