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Ultraviolet-activated two-component super-hydrophobic polyurethane winding adhesive

A two-component polyurethane and polyurethane prepolymer technology, applied in the field of ring rubber, can solve the problems of poor uniformity, high viscosity, and inability to eliminate the ring rubber

Active Publication Date: 2021-09-10
武汉长盈鑫科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During this room temperature curing process, the moisture in the air will gradually penetrate into the polyurethane glue, which will easily cause air bubbles and NCO to be consumed by water, which will affect the mechanical indicators such as the strength and modulus of the final polyurethane glue, and will also affect the performance of the optical fiber ring.
[0006] In the case of high catalyst content, the reaction speed of NCO and OH in the polyurethane adhesive system is very fast, the gelation at room temperature is faster, and the influence of moisture in the air is relatively small, but the viscosity of the ring-wound adhesive rises rapidly, and the operating time is longer. The short length leads to the need to mix glue multiple times to wind an optical fiber ring, which makes the uniformity of the ring around the fiber ring body worse, and the viscosity is relatively high, and it is easy to bring in bubbles that cannot be eliminated during the ring winding process. , the air bubbles will also squeeze the optical fiber, seriously affecting the accuracy of the optical fiber ring

Method used

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  • Ultraviolet-activated two-component super-hydrophobic polyurethane winding adhesive
  • Ultraviolet-activated two-component super-hydrophobic polyurethane winding adhesive
  • Ultraviolet-activated two-component super-hydrophobic polyurethane winding adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] UV-activated two-component polyurethane winding ring gum, including two components of AB,

[0049] Among them, the A component is a hydrophobic polyurethane prepolymer, and the preparation method is as follows: 205.055 g of 1H, 1H, 11H, 11H-全 全-3,6,9-trioxide-1,11-diol (0.5 Mol), 733.5 g of hydroxypropyl blocking organic fluorine modified siloxane (SF-001) (0.5 mol) was added to 80-90 ° C in a stirred reactor, maintaining vacuum 0.09 MPa-0.1 MPa in agitation In the state of vacuum dehydration for 3 hours, then 50 ° C or less, 4448 g of osteol diisocyanate (IPDI) (2 mol) was added to maintain 80-83 ° C for 3 h, and after the hydroxyl group reaction, the reaction was completed. The hydrophobic polyurethane prepolymer S-1, NCO equivalent is 691.5, and the NCO content is 6.073%.

[0050] The B component is mixed by the following components by mass: the hydroxypropylene seal organic fluorochemical silicone (SF- 001) 92%, organic fluorine modified phosphate FGP-1 5%, light produc...

Embodiment 2

[0053] UV-activated two-component polyurethane winding ring gum, including two components of AB,

[0054] Among them, the A component is a hydrophobic polyurethane prepolymer, and the preparation method is as follows: 1467 g of hydroxypropyl-blocking organic fluorochemical modified siloxane (SF-001) (1 mol) is added to 90-95 At ° C, the vacuum degree of 0.09 MPa-0.1 MPa was removed in the stirred state for 3 hours, then the temperature was lowered to 60 ° C or lower, and 524.6 g of 4,4-diisocyanate chironylmethane (HMDI) (2 mol) was maintained after 85- The reaction was reacted at 88 ° C for 4 h, and after the hydroxyl group reaction was complete, the reaction was completed to obtain the hydrophobic polyurethane prepolymer S-2, NCO equivalent was 995.8, and the NCO content was 4.22%.

[0055] The B component is mixed by the following components by mass: hydroxypropylene sealing organic fluorochemical silicone (SF- 001) 58.5%, polycaprolactone-modified organic fluorine-modified phe...

Embodiment 3

[0058] UV-activated two-component polyurethane winding ring gum, including two components of AB,

[0059] Among them, the A component is a hydrophobic polyurethane prepolymer, and the preparation method is as follows: 1450 g of polycaprolactone modified organic fluorine-modified phenylsiloxane (SF-002) (0.5 mol) is added to the stirred reactor Heat until 95-100 ° C, maintaining vacuum 0.09 MPa-0.1 MPa in a state of vacuum dehydration for 3 hours, then cooled to 60 ° C or less, and then maintained 75 after the addition of 168.19 g of hexamethylene diisocyanate (HDI) (1 mol) -80 ° C reaction for 6 h, after the hydroxyl group reaction was complete, the reaction was completed, and the hydrophobic polyurethane prepolymer S-3, NCO equivalent was 1618.19, and the NCO content was 2.59%.

[0060] The B component is mixed by the following components by mass: hydroxypropylene seal organic fluorochemical silicone (SF- 001) 67.3%, 1H, 1H, 11H, 11H-全 -3, 6, 9-trioxide-1, 11-diol 25%, organic fl...

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Abstract

The invention discloses an ultraviolet-activated two-component super-hydrophobic polyurethane winding adhesive which comprises a component A and a component B. The component A is a hydrophobic polyurethane prepolymer. The component B is prepared by mixing the following raw materials in percentage by mass: 85-97% of macromolecular hydrophobic polyol, 1-10% of organic fluorine-silicon modified phosphate, 1-5% of a photobase generator and 0.001%-0.5% of a defoaming agent, wherein the sum of the components is 100%. The winding adhesive formed by mixing the component A and the component B has uniform and very good bonding force on optical fibers and metal, the room-temperature operation time is long, the curing activity can be activated under the irradiation of ultraviolet light, rapid gelation within 5-30 minutes is realized, and flexible operation of the winding adhesive is realized.

Description

Technical field [0001] The present invention relates to the field of winding glue, and more particularly to an ultraviolet activated two-component hyperhemothane polyurethane winding ring glue and its application. Background technique [0002] Fiber Gyro is one of the important gyroscopes of today's international industrial applications. Its main sensitive device is a fiber loop. In order to meet the vibration performance requirements of the fibergroup, improve the overall accuracy of the fiber optic gyro, and the wrapped fiber loop requires a gelatin Curing is fixed, so the rhizoclast is an important part of the fiber ring. [0003] Commonly used wind rings are glued on one side, bypassing a fiber optic ring usually takes 3-24 hours, some large rings need to more than 48 hours. The winding gums currently in use are mainly used in terms of structural and curing, including ultraviolet curing acrylate, thermosetting silicone, epoxy gum, polyurethane glue, and the like. Among them, ...

Claims

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Application Information

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IPC IPC(8): C09J175/04C09J11/06
CPCC09J175/04C09J11/06C08K5/5419
Inventor 黄星余晓梦崔丽云万欢桂振东皮亚斌高旭
Owner 武汉长盈鑫科技有限公司
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