A UV-activated two-component superhydrophobic polyurethane ring adhesive

A two-component polyurethane and polyurethane prepolymer technology, which is applied in the field of wrapping adhesive, can solve the problems of affecting the performance of the optical fiber ring, the uniformity of the wrapping adhesive being deteriorated, and the accuracy of the optical fiber ring. Ring side cracking, good glue uniformity

Active Publication Date: 2022-06-24
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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  • A UV-activated two-component superhydrophobic polyurethane ring adhesive
  • A UV-activated two-component superhydrophobic polyurethane ring adhesive
  • A UV-activated two-component superhydrophobic polyurethane ring adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A UV-activated two-component polyurethane ring adhesive, including two components AB,

[0049] Wherein, the A component is a hydrophobic polyurethane prepolymer, and the preparation method is as follows: 205.055g of 1H,1H,11H,11H-perfluoro-3,6,9-trioxyundecane-1,11-diol (0.5 mol), 733.5g of hydroxypropyl-terminated organofluorine-modified siloxane (SF-001) (0.5mol) was added to the reactor with stirring and heated to 80-90°C, and the vacuum degree was kept at 0.09MPa-0.1MPa while stirring. Vacuum dehydration for 3 hours in the state of 100 °C, then cooled to below 60 °C, added 444.48 g of isophorone diisocyanate (IPDI) (2mol), maintained at 80-83 °C for 3 h, and after the reaction of the hydroxyl group was completed, the reaction was terminated to obtain the obtained Said hydrophobic polyurethane prepolymer S-1 has an NCO equivalent of 691.5 and an NCO content of 6.073%.

[0050] Component B is prepared by mixing the following components by mass percentage: hydroxyprop...

Embodiment 2

[0053] A UV-activated two-component polyurethane ring adhesive, including two components AB,

[0054] Wherein, component A is a hydrophobic polyurethane prepolymer, and the preparation method is as follows: add 1467g of hydroxypropyl-terminated organofluorine modified siloxane (SF-001) (1mol) into a reactor with stirring and heat to 90-95 ℃, keep the vacuum degree of 0.09MPa-0.1MPa, vacuum dehydration for 3 hours under stirring, then cool down to below 60℃, add 524.6g 4,4-diisocyanate dicyclohexylmethane (HMDI) (2mol) and maintain 85- The reaction was carried out at 88° C. for 4 hours. After the hydroxyl group reaction was completed, the reaction was terminated to obtain the hydrophobic polyurethane prepolymer S-2 with an NCO equivalent of 995.8 and an NCO content of 4.22%.

[0055] Component B is composed of the following components by mass percentage: hydroxypropyl end-capped organofluorine-modified siloxane (SF-001) 58.5%, polycaprolactone-modified organofluorine-modified p...

Embodiment 3

[0058] A UV-activated two-component polyurethane ring adhesive, including two components AB,

[0059] Wherein, component A is a hydrophobic polyurethane prepolymer, and the preparation method is as follows: 1450 g of polycaprolactone-modified organofluorine-modified phenylsiloxane (SF-002) (0.5 mol) is added to a reactor with stirring Heating to 95-100℃, keeping the vacuum degree of 0.09MPa-0.1MPa, vacuum dehydration for 3 hours under stirring, then cooling to below 60℃, adding 168.19g hexamethylene diisocyanate (HDI) (1mol) and maintaining 75 -80°C for 6 hours, and after the hydroxyl group reaction is complete, the reaction is terminated to obtain the hydrophobic polyurethane prepolymer S-3 with an NCO equivalent of 1618.19 and an NCO content of 2.59%.

[0060] Component B is prepared by mixing the following components according to mass percentage: hydroxypropyl terminated organofluorine modified siloxane (SF-001) 67.3%, 1H, 1H, 11H, 11H-perfluoro-3,6, 9-Trioxyundecane-1,11-...

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Abstract

The invention discloses a two-component superhydrophobic polyurethane ring adhesive activated by ultraviolet rays, which includes two components A and B, wherein component A is a hydrophobic polyurethane prepolymer; component B is composed of the following components as follows: Mixed by mass ratio: 85-97% macromolecular hydrophobic polyol, 1-10% organic fluorosilicon modified phosphate ester, 1-5% photobase generator, 0.001%-0.5% defoamer, each component And meet 100%; the ring glue mixed with A and B components has a very good adhesion to optical fiber and metal, and the operation time at room temperature is long, and the curing activity can be activated under the irradiation of ultraviolet light, and the rapid curing can be achieved in 5-30 minutes. Gel, realize the flexible operation of the ring glue.

Description

technical field [0001] The invention relates to the technical field of ring-wrap adhesives, in particular to an ultraviolet-activated two-component super-hydrophobic polyurethane ring-wrap adhesive and an application method thereof. Background technique [0002] Fiber optic gyroscope is one of the important gyroscopes in industrial applications today. Its main sensitive device is the fiber optic ring. In order to meet the vibration performance requirements of the fiber optic gyroscope and improve the overall accuracy of the fiber optic gyroscope, the wound fiber optic ring needs to be glued It is fixed by curing, so the ring glue is an important part of the fiber ring. [0003] The commonly used looping process is gluing while looping. It usually takes 3-24 hours to wind a fiber loop, and even more than 48 hours for some large loops. According to the structure and curing method, the ring-shaped adhesives currently in use mainly include UV-curable acrylate adhesives, heat-cu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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