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Elastic adhesive for optical fiber gyro and preparation method of elastic adhesive

An elastic adhesive, fiber optic gyroscope technology, applied in the direction of adhesive types, polymer adhesive additives, adhesives, etc., can solve problems such as short pot life, achieve low viscosity, long operating period, good high and low temperature performance The effect of stability

Active Publication Date: 2013-08-28
SHANGHAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the pot life of the glue is still short, only 4 hours, and the catalyst is a platinum complex (Meng Zhaokui, Yi Xiaosu et al. Coating process and coating device for fiber optic gyroscope coils. China, CN 1597143A [P]. 2005-03-23)

Method used

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  • Elastic adhesive for optical fiber gyro and preparation method of elastic adhesive
  • Elastic adhesive for optical fiber gyro and preparation method of elastic adhesive
  • Elastic adhesive for optical fiber gyro and preparation method of elastic adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment one: The preparation of hydroxyl-terminated flexible chain hyperbranched polymer G2, the chemical reaction formula is:

[0036] (HOCH 2 CH 2 ) 3 N + 9(HOCH 2 CH 2 ) 2 NCH 2 CH 2 COOCH 3

[0037]

[0038] (where A=CH 2 CH 2 CO; E=CH 2 CH 2 ）。

[0039] 1. Preparation of methyl β-N,N'-dihydroxyethylaminopropionate: Take 1mol (105g) diethanolamine and 1.2mol (103g) methyl acrylate, mix well, stir and react at 40°C for 5h, then heat up to Distill at 100°C to remove excess methyl acrylate, and cool to obtain 191g of a light yellow transparent liquid product, namely methyl β-N,N'-dihydroxyethylaminopropionate, whose structural formula is:

[0040] .

[0041]2. Preparation of hyperbranched polymer G2 with hydroxyl-terminated flexible chains: Take 1mol (149g) triethanolamine and a catalytic amount of KOH in a reaction flask, raise the temperature to 120°C, and slowly add 9mol (1719g) β-N,N' dropwise - Methyl dihydroxyethylal...

Embodiment 2

[0053] Embodiment two: The preparation of flexible chain hyperbranched curing agent C2, the chemical reaction formula is:

[0054] G2 + CH 3 COOCH 2 CH 2 N[(CH 2 ) 3 N(CH 3 ) 2 ] 2

[0055]

[0056] (where A=CH 2 CH 2 CO; E=CH 2 CH 2 ; R=CH 2 CH 2 CH 2 NCH 2 CH 2 CH 2 ).

[0057] 1. Preparation of methyl β-bis(N,N'-dimethylaminopropyl)alanine: Take 1mol (187g) of bis(N,N'-dimethylaminopropyl)ammonia and 1.2mol ( Mix 103g) methyl acrylate evenly, stir and react at 40°C for 5h, then raise the temperature to 100°C, distill off excess methyl acrylate under reduced pressure, and cool to obtain 273g light yellow transparent liquid product, namely β-bis(N,N' -Dimethylaminopropyl) methyl-alanine, its structural formula is:

[0058]

[0059] 2. Preparation of flexible chain hyperbranched curing agent C2: Take 1mol (1431g) of hyperbranched polymer G2 and a catalytic amount of KOH in a reaction flask, raise the temperature to 120°C, and slowly add 12mol (327...

Embodiment 3

[0062] Embodiment three: Preparation of Elastic Adhesive for Fiber Optic Gyroscope:

[0063] 1. Flexible chain hyperbranched curing agent C1 100g, butanediol diglycidyl ether (epoxy equivalent 150-180g.mol -1 ) 100g, after the two are fully mixed, cured at 80°C for 48 hours to obtain a tough cured product. The glass transition temperature of the cured product is -40°C.

[0064] 2. Flexible chain hyperbranched curing agent C1 100g, flexible chain hyperbranched curing agent C2 100g, butanediol diglycidyl ether (epoxy equivalent 150-180g.mol -1 ) 200g, after the three were fully mixed, cured at 80°C for 48 hours to obtain a tough cured product. The glass transition temperature of the cured product is -46°C.

[0065] 3. Flexible chain hyperbranched curing agent C1 100g, poly 1,2-cyclohexanediol diglycidyl ether (epoxy equivalent 180-250g.mol -1 ) 150g. After the two are fully mixed, they are cured at 80°C for 48 hours to obtain a tough cured product. The glass transition...

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Abstract

The invention relates to elastic adhesive for an optical fiber gyro and a preparation method of the elastic adhesive. The elastic adhesive is double-component adhesive, wherein one component is flexible chain hyper-branched curing agent, and the other component is flexible chain epoxy resin; and in use, the two components are mixed in a mass ratio of 1:1-1:3 and then cured for 48 hours at the temperature of 80 DEG C. The elastic adhesive for the optical fiber gyro has good high and low temperature performance stability and good dimensional stability, and simultaneously meets the requirements of elasticity and strength. The properties of low viscosity, long operation period, high elastic modulus, good toughness and the like of the elastic adhesive are realized, the adhesive utilization requirement of the optical fiber gyro is met, the proper adhesive is provided for the manufacture of the optical fiber gyro, and the working performance of the optical fiber gyro is improved.

Description

technical field [0001] The invention relates to an elastic adhesive and a preparation method thereof, in particular to an elastic adhesive for an optical fiber gyroscope and a preparation method thereof. Background technique [0002] Fiber optic gyroscope is an angular velocity fiber sensor based on the Sagnac effect, and the fiber optic coil is one of its important components. In order to ensure good robustness of the coil in a vibrating environment, proper packaging of the fiber optic coil is required. The current common practice is to use adhesives to bond the optical fiber and the optical fiber, as well as the optical fiber coil and the gyroscope skeleton, and then become a whole. The thermal stability of the optical fiber coil and the overall vibration resistance and impact resistance of the optical fiber coil can be significantly improved by encapsulating the adhesive. [0003] The optical fiber is very sensitive to external stress. For the packaged optical fiber co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J163/00C09J11/08G01C19/64
Inventor 张宝华陈斌翁燕青崔后礼薛兴旺罗静贞
Owner SHANGHAI UNIV