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

Method for preparing organic silicon dampproof protection film on surface of borate crystal

A crystal surface, borate technology, applied in crystal growth, chemical instruments and methods, post-processing details, etc., can solve problems such as difficult promotion, complicated operation, scrapped devices, etc., and achieve the effect of improving deliquescence resistance

Inactive Publication Date: 2011-08-31
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] CBO crystals and CLBO crystals are excellent nonlinear optical materials, among which CBO crystals have shown excellent performance in laser triple frequency conversion, and CLBO crystals can obtain high output power when used in quadrupled frequency output 266nm lasers, but These two crystals are prone to deliquescence in the atmosphere, and severe moisture absorption may even crack and cause the device to be scrapped, and cannot be used for a long time without protective measures
It has been reported that working and storing crystals at high temperature (>100°C) can effectively prevent crystal deliquescence; the work of using high temperature to protect CBO crystals and CLBO crystals from deliquescence was published in Applied Physics.B, Lasers and optics 2007, 88: 197-200 and Journal of Crystal Growth, 2006, 293(1): 97-101; however, deliquescence still occurs when these two crystals are stored and used in conventional atmospheric environments
Patent CN1066332 reports a method for preparing KCl crystal moisture-proof protective film with diamond-like carbon, and its operation is complicated and difficult to popularize

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
  • Method for preparing organic silicon dampproof protection film on surface of borate crystal
  • Method for preparing organic silicon dampproof protection film on surface of borate crystal
  • Method for preparing organic silicon dampproof protection film on surface of borate crystal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 5ml of γ-glycidoxypropyltrimethylsilane was added to 50ml of ethanol, 1ml of acetic acid was added dropwise as a hydrolysis catalyst, and 5ml of deionized water was added to cause a hydrolysis reaction to obtain a coating sol solution. Apply the coating sol solution on the surface of the CBO crystal to be protected, and place it in a desiccator to dry in the shade for 24 hours before taking it out. The film layer is heat-treated at 120°C for 10 hours to form a dense silicone moisture-proof protective film. Drop water on the surface of the CBO crystal coated with silicone moisture-proof protective film, the water drops will roll down naturally, the water will not infiltrate the crystal at all, and the crystal has moisture-proof ability.

Embodiment 2

[0033] 2ml of γ-glycidoxypropyltrimethylsilane was added to 40ml of acetone, 1ml of acetic acid was added dropwise as a hydrolysis catalyst, and 1ml of deionized water was added to cause a hydrolysis reaction to obtain a coating sol solution. Apply the coating sol solution on the surface of the CBO crystal to be protected, and place it in a desiccator to dry in the shade for 12 hours before taking it out. The film layer is heat-treated at 110°C for 10 hours to form a dense silicone moisture-proof protective film. The crystal coated with the silicone moisture-proof protective film was heated to 150°C, and then quenched to room temperature, and the protective film showed no sign of damage. Place the crystal coated with silicone moisture-proof protective film in the atmosphere, and the crystal will remain in good condition after 1 month without any signs of deliquescence.

Embodiment 3

[0035] 3 ml of octyltrimethoxysilane was added to 40 ml of methanol, 1 ml of acetic acid was added dropwise as a hydrolysis catalyst, and 0.5 ml of deionized water was added to cause a hydrolysis reaction to obtain a coating sol solution. Select a CBO device coated with triple-frequency anti-reflection coating, apply the coating sol solution on the non-transparent surface of the CBO device, and place it in a desiccator to dry in the shade for 8 hours before taking it out. Heat treatment to form a dense silicone moisture-proof protective film. The crystal coated with the silicone moisture-proof protective film was heated to 150°C, and then quenched to room temperature, and the three-frequency anti-reflection coating and the moisture-proof protective film showed no signs of damage. The crystal coated with silicone moisture-proof protective film was placed in the atmosphere, and after one month, the crystal and the frequency-tripling anti-reflection coating remained in good condi...

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

PropertyMeasurementUnit
flash pointaaaaaaaaaa
Login to View More

Abstract

The present invention discloses a method for preparing an organic silicon dampproof protection film on the surface of borate crystal, which comprises the following steps that: a silane coupling agent, acetic acid, deionized water and low-boiling organic solvent are mixed, and the silane coupling agent undergoes hydrolysis reaction to obtain film plating sol solution; the silane coupling agent is R-Si(OCH3)3, wherein R is n-dodecyl, octyl or gamma-epoxypropoxy propyl; the low-boiling organic solvent is ethonal, methanol or acetone; the film plating sol solution is evenly coated on the surface of the borate crystal, and a prepolymer organic silicon hydrophobic film is formed on the surface of the borate crystal after drying in a shade; and the prepolymer organic silicon hydrophobic film is subjected to heat treatment at a temperature of between 80 and 140 DEG C, and a compact organic silicon dampproof protection film is formed on the surface of the crystal. The method has the advantages that: the silane coupling agent provided with -Si(OCH3)3 functional groups forms organo-silicon polymer on the surface of the crystal, the organo-silicon polymer is connected with covalent bonds on the surface of the crystal; and the organic functional groups of the silane coupling agent have hydrophobicity, can prevent water molecules in air contacting the surface of the crystal so as to improve the deliquescence resistance of the crystal.

Description

technical field [0001] The invention relates to a method for preparing a moisture-proof protective film on the surface of deliquescent borate crystals, in particular to a method for preparing an organic silicon moisture-proof protective film on the surface of borate crystals. technical background [0002] CBO crystals and CLBO crystals are excellent nonlinear optical materials, among which CBO crystals have shown excellent performance in laser triple frequency conversion, and CLBO crystals can obtain high output power when used in quadrupled frequency output 266nm lasers, but These two crystals are prone to deliquescence in the atmosphere, and severe moisture absorption may even crack and cause the device to be scrapped, and cannot be used for a long time without protective measures. It has been reported that working and storing crystals at high temperature (>100°C) can effectively prevent crystal deliquescence; the work of using high temperature to protect CBO crystals a...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C30B33/00
Inventor 吴以成鲁路傅佩珍
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI