Unlock instant, AI-driven research and patent intelligence for your innovation.

Fiber coatings with low modulus and high critical stress

A technology of optical fiber and coating, applied in the direction of coating, glass optical fiber, cladding optical fiber, etc., to achieve the effect of high critical stress, high tear strength, and good microbending performance

Inactive Publication Date: 2019-08-23
CORNING INC
View PDF23 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is a need for a primary coating material that has a low Young's modulus but is still resistant to stress-induced defect formation during fiber manufacturing and handling

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fiber coatings with low modulus and high critical stress
  • Fiber coatings with low modulus and high critical stress
  • Fiber coatings with low modulus and high critical stress

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0227] Several exemplary coatings prepared from coating compositions comprising oligomeric materials according to the present disclosure were prepared and tested. Testing included measurements of Young's modulus, tear strength and critical stress. The preparation of the oligomer materials, description of the components of the coating compositions, processing conditions used to form the oligomer materials and coatings, test methods, and test results are described below.

[0228] oligomer material. The coating composition is a curable coating composition comprising an oligomeric material of the type described herein. For illustrative purposes, the reaction scheme from H12MDI (4,4'-methylene bis(cyclohexyl isocyanate)), PPG4000 (polypropylene glycol, M n 4000 g / mole) and HEA (2-hydroxyethyl acrylate) to prepare exemplary oligomer materials. All reagents used were provided by the manufacturer without further purification. H12MDI was purchased from ALDRICH Company. PPG4000 is ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Fiber coatings with low Young's modulus, high tear strength, and / or high critical stress are achieved with coating compositions that include an oligomeric material formed from an isocyanate, a hydroxyacrylate compound and a polyol. The oligomeric material includes a polyether urethane acrylate and a di-adduct compound. The reaction mixture used to form the oligomeric material includes a molar ratio of isocyanate:hydroxy acrylate:polyol of n:m:p, where when p is 2, n is in the range from 3.0 to 5.0 and m is in the range from 1.50n-3 to 2.50n-5. Control of the n:m:p ratio leads to compositionsthat, when cured, provide coatings and cured products having high critical stress, high tear strength, and a high ratio of tear strength to Young's modulus.

Description

[0001] This application claims priority under 35 U.S.C. §119 to U.S. Provisional Application Serial No. 62 / 419,154, filed November 08, 2016, which application is based upon and is hereby incorporated by reference in its entirety. technical field [0002] The present disclosure pertains to optical fiber coatings with low Young's modulus and high critical stress. More specifically, the present disclosure pertains to oligomers for radiation curable coating compositions that produce optical fiber coatings with low Young's modulus and high critical stress. Background technique [0003] The transmission coefficient of light through an optical fiber is highly dependent on the nature of the coating applied to the optical fiber. The coating typically includes a primary coating and a secondary coating, wherein the secondary coating surrounds the primary coating and the primary coating contacts the glass waveguide (core+cladding) portion of the fiber. The secondary coating is a harder...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08G18/48C03C25/326C08G18/67C08G18/75C09D175/16G02B1/14
CPCC03C25/326C08G18/4825C08G18/672C09D175/16G02B1/14C03C25/106C08G18/758C08G18/48C08G2115/02C08G18/12C08G18/4833C08G18/6666C08G18/6725C09D4/00G02B6/02395
Inventor 陈仰斌C-K·陈M·E·德罗萨I·I·库兹米娜P·坦登R·坦登
Owner CORNING INC