CN113324736A - Refractive index matching fluid and optical detection method of glass - Google Patents
Refractive index matching fluid and optical detection method of glass Download PDFInfo
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- CN113324736A CN113324736A CN202110581473.5A CN202110581473A CN113324736A CN 113324736 A CN113324736 A CN 113324736A CN 202110581473 A CN202110581473 A CN 202110581473A CN 113324736 A CN113324736 A CN 113324736A
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- 239000012530 fluid Substances 0.000 title claims abstract description 107
- 239000011521 glass Substances 0.000 title claims abstract description 31
- 230000003287 optical effect Effects 0.000 title abstract description 22
- 238000001514 detection method Methods 0.000 title abstract description 20
- SESFRYSPDFLNCH-UHFFFAOYSA-N benzyl benzoate Chemical compound C=1C=CC=CC=1C(=O)OCC1=CC=CC=C1 SESFRYSPDFLNCH-UHFFFAOYSA-N 0.000 claims abstract description 60
- -1 lipid compound Chemical class 0.000 claims abstract description 58
- FHUODBDRWMIBQP-UHFFFAOYSA-N Ethyl p-anisate Chemical compound CCOC(=O)C1=CC=C(OC)C=C1 FHUODBDRWMIBQP-UHFFFAOYSA-N 0.000 claims abstract description 38
- NIQCNGHVCWTJSM-UHFFFAOYSA-N Dimethyl phthalate Chemical compound COC(=O)C1=CC=CC=C1C(=O)OC NIQCNGHVCWTJSM-UHFFFAOYSA-N 0.000 claims abstract description 32
- QUKGYYKBILRGFE-UHFFFAOYSA-N benzyl acetate Chemical compound CC(=O)OCC1=CC=CC=C1 QUKGYYKBILRGFE-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229960002903 benzyl benzoate Drugs 0.000 claims abstract description 30
- XSIFPSYPOVKYCO-UHFFFAOYSA-N butyl benzoate Chemical compound CCCCOC(=O)C1=CC=CC=C1 XSIFPSYPOVKYCO-UHFFFAOYSA-N 0.000 claims abstract description 24
- HIQIXEFWDLTDED-UHFFFAOYSA-N 4-hydroxy-1-piperidin-4-ylpyrrolidin-2-one Chemical compound O=C1CC(O)CN1C1CCNCC1 HIQIXEFWDLTDED-UHFFFAOYSA-N 0.000 claims abstract description 19
- KBEBGUQPQBELIU-CMDGGOBGSA-N Ethyl cinnamate Chemical compound CCOC(=O)\C=C\C1=CC=CC=C1 KBEBGUQPQBELIU-CMDGGOBGSA-N 0.000 claims abstract description 19
- KBEBGUQPQBELIU-UHFFFAOYSA-N cinnamic acid ethyl ester Natural products CCOC(=O)C=CC1=CC=CC=C1 KBEBGUQPQBELIU-UHFFFAOYSA-N 0.000 claims abstract description 19
- FBSAITBEAPNWJG-UHFFFAOYSA-N dimethyl phthalate Natural products CC(=O)OC1=CC=CC=C1OC(C)=O FBSAITBEAPNWJG-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229960001826 dimethylphthalate Drugs 0.000 claims abstract description 16
- 229940007550 benzyl acetate Drugs 0.000 claims abstract description 15
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims abstract description 12
- GKKZMYDNDDMXSE-UHFFFAOYSA-N Ethyl 3-oxo-3-phenylpropanoate Chemical compound CCOC(=O)CC(=O)C1=CC=CC=C1 GKKZMYDNDDMXSE-UHFFFAOYSA-N 0.000 claims abstract description 12
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims abstract description 12
- ZFOZVQLOBQUTQQ-UHFFFAOYSA-N Tributyl citrate Chemical compound CCCCOC(=O)CC(O)(C(=O)OCCCC)CC(=O)OCCCC ZFOZVQLOBQUTQQ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229940071248 anisate Drugs 0.000 claims abstract description 10
- FLKPEMZONWLCSK-UHFFFAOYSA-N diethyl phthalate Chemical compound CCOC(=O)C1=CC=CC=C1C(=O)OCC FLKPEMZONWLCSK-UHFFFAOYSA-N 0.000 claims abstract description 10
- MTZQAGJQAFMTAQ-UHFFFAOYSA-N ethyl benzoate Chemical compound CCOC(=O)C1=CC=CC=C1 MTZQAGJQAFMTAQ-UHFFFAOYSA-N 0.000 claims abstract description 10
- GAEKPEKOJKCEMS-UHFFFAOYSA-N gamma-valerolactone Chemical compound CC1CCC(=O)O1 GAEKPEKOJKCEMS-UHFFFAOYSA-N 0.000 claims abstract description 10
- QPJVMBTYPHYUOC-UHFFFAOYSA-N methyl benzoate Chemical compound COC(=O)C1=CC=CC=C1 QPJVMBTYPHYUOC-UHFFFAOYSA-N 0.000 claims abstract description 10
- OSWPMRLSEDHDFF-UHFFFAOYSA-N methyl salicylate Chemical compound COC(=O)C1=CC=CC=C1O OSWPMRLSEDHDFF-UHFFFAOYSA-N 0.000 claims abstract description 10
- HQYSDZUOGBUYJA-UHFFFAOYSA-N 2-methylpropyl 4-methoxybenzoate Chemical compound COC1=CC=C(C(=O)OCC(C)C)C=C1 HQYSDZUOGBUYJA-UHFFFAOYSA-N 0.000 claims abstract description 5
- GYCKQBWUSACYIF-UHFFFAOYSA-N Ethyl salicylate Chemical compound CCOC(=O)C1=CC=CC=C1O GYCKQBWUSACYIF-UHFFFAOYSA-N 0.000 claims abstract description 5
- DOOTYTYQINUNNV-UHFFFAOYSA-N Triethyl citrate Chemical compound CCOC(=O)CC(O)(C(=O)OCC)CC(=O)OCC DOOTYTYQINUNNV-UHFFFAOYSA-N 0.000 claims abstract description 5
- NWPWRAWAUYIELB-UHFFFAOYSA-N ethyl 4-methylbenzoate Chemical compound CCOC(=O)C1=CC=C(C)C=C1 NWPWRAWAUYIELB-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229940005667 ethyl salicylate Drugs 0.000 claims abstract description 5
- 229940074928 isopropyl myristate Drugs 0.000 claims abstract description 5
- WRGLZAJBHUOPFO-UHFFFAOYSA-N methyl 3-oxo-3-phenylpropanoate Chemical compound COC(=O)CC(=O)C1=CC=CC=C1 WRGLZAJBHUOPFO-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229940095102 methyl benzoate Drugs 0.000 claims abstract description 5
- 229960001047 methyl salicylate Drugs 0.000 claims abstract description 5
- 239000001069 triethyl citrate Substances 0.000 claims abstract description 5
- VMYFZRTXGLUXMZ-UHFFFAOYSA-N triethyl citrate Natural products CCOC(=O)C(O)(C(=O)OCC)C(=O)OCC VMYFZRTXGLUXMZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 235000013769 triethyl citrate Nutrition 0.000 claims abstract description 5
- 239000004094 surface-active agent Substances 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 14
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- IJCWFDPJFXGQBN-RYNSOKOISA-N [(2R)-2-[(2R,3R,4S)-4-hydroxy-3-octadecanoyloxyoxolan-2-yl]-2-octadecanoyloxyethyl] octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC[C@@H](OC(=O)CCCCCCCCCCCCCCCCC)[C@H]1OC[C@H](O)[C@H]1OC(=O)CCCCCCCCCCCCCCCCC IJCWFDPJFXGQBN-RYNSOKOISA-N 0.000 claims description 6
- 229940113115 polyethylene glycol 200 Drugs 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- 235000011078 sorbitan tristearate Nutrition 0.000 claims description 6
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 5
- 229920001214 Polysorbate 60 Polymers 0.000 claims description 5
- PRXRUNOAOLTIEF-ADSICKODSA-N Sorbitan trioleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](OC(=O)CCCCCCC\C=C/CCCCCCCC)[C@H]1OC[C@H](O)[C@H]1OC(=O)CCCCCCC\C=C/CCCCCCCC PRXRUNOAOLTIEF-ADSICKODSA-N 0.000 claims description 4
- DLDJFQGPPSQZKI-UHFFFAOYSA-N but-2-yne-1,4-diol Chemical compound OCC#CCO DLDJFQGPPSQZKI-UHFFFAOYSA-N 0.000 claims description 4
- 229940043232 butyl acetate Drugs 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 7
- 238000002156 mixing Methods 0.000 description 19
- 239000002994 raw material Substances 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 11
- 238000002360 preparation method Methods 0.000 description 9
- 238000003756 stirring Methods 0.000 description 9
- 238000001914 filtration Methods 0.000 description 8
- 238000004806 packaging method and process Methods 0.000 description 8
- 238000005303 weighing Methods 0.000 description 8
- 229910052736 halogen Inorganic materials 0.000 description 4
- 150000002367 halogens Chemical class 0.000 description 4
- 231100000086 high toxicity Toxicity 0.000 description 3
- FFJCNSLCJOQHKM-CLFAGFIQSA-N (z)-1-[(z)-octadec-9-enoxy]octadec-9-ene Chemical compound CCCCCCCC\C=C/CCCCCCCCOCCCCCCCC\C=C/CCCCCCCC FFJCNSLCJOQHKM-CLFAGFIQSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000005341 toughened glass Substances 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 239000002280 amphoteric surfactant Substances 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- NZZFYRREKKOMAT-UHFFFAOYSA-N diiodomethane Chemical compound ICI NZZFYRREKKOMAT-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- ILQHFISNNSQESO-UHFFFAOYSA-N naphthalene;hydrobromide Chemical compound Br.C1=CC=CC2=CC=CC=C21 ILQHFISNNSQESO-UHFFFAOYSA-N 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- XPDICGYEJXYUDW-UHFFFAOYSA-N tetraarsenic tetrasulfide Chemical compound S1[As]2S[As]3[As]1S[As]2S3 XPDICGYEJXYUDW-UHFFFAOYSA-N 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0228—Testing optical properties by measuring refractive power
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention relates to the field of optical test, in particular to an optical detection method of refractive index matching fluid and glass. The refractive index matching fluid comprises a lipid compound; the lipid compound is selected from at least two of butyl acetate, ethyl benzoate, butyl benzoate, benzyl benzoate, triethyl citrate, tributyl citrate, gamma-valerolactone, dimethyl phthalate, diethyl phthalate, isopropyl myristate, ethyl salicylate, benzyl acetate, ethyl benzoylacetate, methyl salicylate, methyl benzoylacetate, ethyl cinnamate, methyl benzoate, ethyl anisate, butyl anisate, isobutyl anisate, propyl anisate, and ethyl p-toluate; the refractive index of the refractive index matching fluid at 20 ℃ is 1.50-1.57. The refractive index matching fluid can keep a stable state in a specific refractive index range, is less influenced by temperature, and has small smell and low cost.
Description
Technical Field
The invention relates to the field of optical test, in particular to an optical detection method of refractive index matching fluid and glass.
Background
Currently, in optical related detection, detection personnel often need to add a refractive index matching fluid between two optical devices to eliminate the influence on an optical detection result caused by the change of substances at a joint interface. Taking stress detection of glass as an example, when light is incident from a detector prism to glass to be detected, because an air gap exists between the detector prism and the glass to be detected, the light sequentially passes through three different media, namely solid-gas-solid, and changes of optical properties such as intensity, polarization state and the like occur on an interface of the detector prism, if the optical changes cannot be eliminated, errors occur in a test result, and the test result is inaccurate.
After the refractive index matching fluid is added between the detector prism and the glass to be tested, the refractive index matching fluid can fill the gap between the detector prism and the glass to be tested, so that the detector prism and the glass to be tested have better fitting performance and light transmission, the optical performance of the detector prism and the glass to be tested and an air contact interface is improved, the reflection loss related to the glass-air contact surface is almost eliminated, and the accuracy of the stress test result of the glass to be tested is greatly improved. In addition, the addition of the refractive index matching fluid also has the effects of reducing abrasion between the prism and the glass to be detected, enabling the prism and the glass to be completely attached, presenting a clearer image and the like.
At present, most of the refractive index matching fluid is imported from foreign countries, and the use cost is high, and especially for some glass devices (such as tempered glass) with a specific refractive index range, the refractive index matching fluid needs to be customized, and the cost is higher. In addition, the existing refractive index matching fluid is sensitive to temperature, the refractive index value of the refractive index matching fluid is greatly influenced by the temperature, and in some detection fields with large temperature change ranges, if the refractive index of the refractive index matching fluid fluctuates greatly along with the temperature change, the accuracy of a detection result is not favorable. For example, the stress value of the tempered glass is usually measured at 25 + -15 deg.C, and if the refractive index of the refractive index matching fluid fluctuates by more than 0.01 in this temperature range, the accuracy of the measurement result is affected. Moreover, some refractive index matching fluids are even added with organic substances such as naphthalene bromide, diiodomethane, arsenic sulfide and the like, which all contain halogen and have high toxicity, strong volatility, heavy smell, poor stability, high price and high use cost.
Disclosure of Invention
Accordingly, the present invention provides a refractive index matching fluid which is capable of maintaining a stable state in a specific refractive index range without adding a highly toxic compound such as halogen, is less affected by temperature, and has a low odor and a low cost.
The refractive index matching fluid comprises lipid compounds:
the lipid compound is selected from at least two of butyl acetate, ethyl benzoate, butyl benzoate, benzyl benzoate, triethyl citrate, tributyl citrate, gamma-valerolactone, dimethyl phthalate, diethyl phthalate, isopropyl myristate, ethyl salicylate, benzyl acetate, ethyl benzoylacetate, methyl salicylate, methyl benzoylacetate, ethyl cinnamate, methyl benzoate, ethyl anisate, butyl anisate, isobutyl anisate, propyl anisate, and ethyl p-toluate;
the refractive index of the refractive index matching fluid at 20 ℃ is 1.50-1.57.
In one embodiment, the lipid compound is selected from two or three of isopropyl myristate, ethyl benzoylacetate, dimethyl phthalate, butyl benzoate, ethyl anisate, benzyl benzoate, butyl acetate, ethyl cinnamate and benzyl acetate.
In one embodiment, the lipid compound consists of 20-24 parts by mass of isopropyl myristate and 74-78 parts by mass of ethyl benzoylacetate.
In one embodiment, the lipid compound consists of 48 to 52 parts by mass of dimethyl phthalate, 25 to 29 parts by mass of butyl benzoate and 23.1 parts by mass of ethyl anisate.
In one embodiment, the lipid compound consists of 33-37 parts by mass of dimethyl phthalate, 44-48 parts by mass of benzyl benzoate and 15-19 parts by mass of butyl acetate.
In one embodiment, the lipid compound consists of 49 to 53 parts by mass of ethyl cinnamate and 46 to 50 parts by mass of benzyl acetate.
In one embodiment, the lipid compound consists of 83-87 parts of benzyl benzoate and 12-16 parts of isopropyl myristate, by mass parts.
In one embodiment, the lipid compound consists of 57-61 parts of benzyl benzoate and 37-41 parts of ethyl anisate by mass parts.
In one embodiment, the lipid compound consists of 83-87 parts of benzyl benzoate and 7-11 parts of ethyl cinnamate by mass parts.
In one embodiment, the refractive index matching fluid further comprises a surfactant.
In one embodiment, the refractive index matching fluid comprises, by mass, 95% -99.9% of lipid compounds and 0.01% -5% of surfactant.
In one embodiment, the surfactant is selected from one or more of polyvinyl alcohol, polyethylene glycol 200, polyoxyethylene 20 oil ether, tween-60, span 65, span 85 and 1, 4-butynediol.
In one embodiment, the refractive index matching fluid comprises 84-86% of benzyl benzoate, 13-15% of isopropyl myristate and 0.5-1.5% of surfactant by mass.
In one embodiment, the refractive index matching fluid consists of 50-52% of ethyl cinnamate, 47-49% of benzyl acetate and 0.5-1% of surfactant in percentage by mass.
In one embodiment, the refractive index matching fluid consists of 58-60% of benzyl benzoate, 38-40% of ethyl anisate and 1-2% of surfactant in percentage by mass.
The invention also provides an optical detection method of the glass. Under the detection temperature within the range of 25 +/-15 ℃, the stable and accurate detection result of the optical device can be ensured.
The optical inspection method of the glass comprises the step of using the refractive index matching fluid.
Compared with the prior art, the invention has the following beneficial effects:
starting from the formula of the refractive index matching fluid, the invention discovers that after at least two specific lipid compounds are mixed and dissolved mutually, the refractive index matching fluid with the refractive index of 1.50-1.57 can be prepared by adjusting the addition amount of the lipid compounds, and the refractive index range is just matched with the refractive index (about 1.54) of glass. More importantly, the refractive index matching fluid can keep a stable state in the refractive index range, is slightly influenced by temperature, has refractive index fluctuation of less than or equal to 0.01 within the temperature range of 25 +/-15 ℃, and has good application prospect in optical detection of glass. In addition, the refractive index matching fluid of the invention does not need to add halogen and other compounds with high toxicity, and has less smell and low cost. The environmental protection pressure is small.
Drawings
FIG. 1 is a graph showing the change of the refractive index value with temperature of the refractive index matching fluid of example 4;
FIG. 2 is a graph showing the change of the refractive index value with temperature of the refractive index matching fluid of example 5;
FIG. 3 is a graph showing the change of the refractive index value with temperature of the refractive index matching fluid of example 6;
FIG. 4 is a graph showing the change of the refractive index value with temperature of the refractive index matching fluid of comparative example 1.
Detailed Description
The present invention will be described in further detail with reference to specific examples. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
An index matching fluid comprising a lipid compound;
the lipid compound is selected from at least two of butyl acetate, ethyl benzoate, butyl benzoate, benzyl benzoate, triethyl citrate, tributyl citrate, gamma-valerolactone, dimethyl phthalate, diethyl phthalate, isopropyl myristate, ethyl salicylate, benzyl acetate, ethyl benzoylacetate, methyl salicylate, methyl benzoylacetate, ethyl cinnamate, methyl benzoate, ethyl anisate, butyl anisate, isobutyl anisate, propyl anisate, and ethyl p-toluate;
the refractive index of the refractive index matching fluid at 20 ℃ is 1.50-1.57.
Starting from the formula of the refractive index matching fluid, the invention discovers that after at least two specific lipid compounds are mixed and dissolved mutually, the refractive index matching fluid with the refractive index of 1.50-1.57 can be prepared by adjusting the addition amount of the lipid compounds, and the refractive index range is just matched with the refractive index (about 1.54) of glass. More importantly, the refractive index matching fluid can keep a stable state in the refractive index range, is slightly influenced by temperature, has refractive index fluctuation of less than or equal to 0.01 within the temperature range of 25 +/-15 ℃, and has good application prospect in optical detection of glass. In addition, the refractive index matching fluid of the invention does not need to add halogen and other compounds with high toxicity, and has less smell and low cost. The environmental protection pressure is small.
The refractive index value of the refractive index matching fluid can be determined to be any value between 1.50 and 1.57 by adjusting the addition amount of the lipid compound, the linear relation between the mass ratio of the lipid compound and the refractive index value can be easily found, and the refractive index adjusting method has high controllability, good flexibility and excellent repeatability.
In some preferred embodiments, the refractive index of the refractive index matching fluid at 20 ℃ is between 1.53 and 1.55. More closely matching the refractive index of the glass.
In one embodiment, the lipid compound is selected from two or three of isopropyl myristate, ethyl benzoylacetate, dimethyl phthalate, butyl benzoate, ethyl anisate, benzyl benzoate, butyl acetate, ethyl cinnamate and benzyl acetate.
In one embodiment, the lipid compound consists of 20-24 parts by mass of isopropyl myristate and 74-78 parts by mass of ethyl benzoylacetate.
In one embodiment, the lipid compound consists of 48 to 52 parts by mass of dimethyl phthalate, 25 to 29 parts by mass of butyl benzoate and 23.1 parts by mass of ethyl anisate.
In one embodiment, the lipid compound consists of 33-37 parts by mass of dimethyl phthalate, 44-48 parts by mass of benzyl benzoate and 15-19 parts by mass of butyl acetate.
In one embodiment, the lipid compound consists of 49 to 53 parts by mass of ethyl cinnamate and 46 to 50 parts by mass of benzyl acetate.
In one embodiment, the lipid compound consists of 83-87 parts of benzyl benzoate and 12-16 parts of isopropyl myristate, by mass parts.
In one embodiment, the lipid compound consists of 57-61 parts of benzyl benzoate and 37-41 parts of ethyl anisate by mass parts.
In one embodiment, the lipid compound consists of 83-87 parts of benzyl benzoate and 7-11 parts of ethyl cinnamate by mass parts.
In one embodiment, the refractive index matching fluid further comprises a surfactant.
It is understood that the surfactant according to the present invention may be a cationic surfactant, an anionic surfactant, a nonionic surfactant or an amphoteric surfactant, and the surfactant is added to mainly lower the surface tension and enhance the wetting and defoaming properties.
In one embodiment, the refractive index matching fluid comprises, by mass, 95% -99.9% of lipid compounds and 0.01% -5% of surfactant.
In one embodiment, the surfactant is selected from one or more of polyvinyl alcohol, polyethylene glycol 200, polyoxyethylene 20 oil ether, tween-60, span 65, span 85 and 1, 4-butynediol.
In one embodiment, the surfactant is selected from one or two of polyvinyl alcohol, polyethylene glycol 200, polyoxyethylene 20 oleyl ether, tween-60, span 65, span 85 and 1, 4-butynediol.
In one embodiment, the refractive index matching fluid comprises 84-86% of benzyl benzoate, 13-15% of isopropyl myristate and 0.5-1.5% of surfactant by mass.
In one embodiment, the refractive index matching fluid consists of 50-52% of ethyl cinnamate, 47-49% of benzyl acetate and 0.5-1% of surfactant in percentage by mass.
In one embodiment, the refractive index matching fluid consists of 58-60% of benzyl benzoate, 38-40% of ethyl anisate and 1-2% of surfactant in percentage by mass.
It is understood that the refractive index matching fluid of the present invention can be prepared by the following method:
at least two lipid compounds selected from butyl acetate, ethyl benzoate, butyl benzoate, benzyl benzoate, triethyl citrate, tributyl citrate, gamma-valerolactone, dimethyl phthalate, diethyl phthalate, isopropyl myristate, ethyl salicylate, benzyl acetate, ethyl benzoylacetate, methyl salicylate, methyl benzoylacetate, ethyl cinnamate, methyl benzoate, ethyl anisate, butyl anisate, isobutyl anisate, propyl anisate and ethyl p-toluate were mixed and stirred, and then filtered and ultrasonically treated to remove air bubbles.
Optionally, the preparation method further comprises the step of mixing and stirring the at least two lipid compounds with the surfactant.
It will be appreciated that mixing agitation can be carried out in a mixing tank.
The refractive index matching fluid has the advantages of simple preparation process, low cost, little smell and no toxicity.
The refractive index matching fluid of the present invention can be used between two optical devices.
An optical detection method of glass comprises the step of using the refractive index matching fluid.
It will be appreciated that the optical inspection of the glass may be a glass stress test. The refractive index matching fluid is filled in a gap between the glass to be tested and the stress meter, so that the accuracy of a test result can be greatly improved, and the abrasion of the glass can be reduced. The refractive index matching fluid has stable refractive index within the range of 25 +/-15 ℃, the fluctuation is not more than 0.01, the practicability is strong, and the stable and accurate detection result of an optical device can be ensured at the conventional detection temperature within the range of 25 +/-15 ℃.
The following examples and comparative examples are further described below, and the starting materials used in the following examples can be commercially available, unless otherwise specified, and the equipment used therein can be commercially available, unless otherwise specified.
Example 1
The embodiment provides a refractive index matching fluid and a preparation method thereof. The method comprises the following steps:
1) weighing the following raw materials in percentage by mass:
22.3% isopropyl myristate, 76.2% ethyl benzoylacetate, 0.5% polyvinyl alcohol, 1% span 65.
2) Sequentially adding the raw materials into a mixing tank, stirring and mixing uniformly, filtering, removing bubbles by using ultrasonic waves, and packaging to obtain the refractive index matching fluid.
3) The refractive index values of the above refractive index-matching fluids were measured at a wavelength of 589.3nm at 20 ℃ and the results are shown in Table 1.
Example 2
The embodiment provides a refractive index matching fluid and a preparation method thereof. The method comprises the following steps:
1) weighing the following raw materials in percentage by mass:
49.5% of dimethyl phthalate, 26.9% of butyl benzoate, 23.1% of ethyl anisate and 0.5% of tween-60.
2) Sequentially adding the raw materials into a mixing tank, stirring and mixing uniformly, filtering, removing bubbles by using ultrasonic waves, and packaging to obtain the refractive index matching fluid.
3) The refractive index values of the above refractive index-matching fluids were measured at a wavelength of 589.3nm at 20 ℃ and the results are shown in Table 1.
Example 3
The embodiment provides a refractive index matching fluid and a preparation method thereof. The method comprises the following steps:
1) weighing the following raw materials in percentage by mass:
35% dimethyl phthalate, 46.1% benzyl benzoate, 16.9% butyl acetate, 2% polyethylene glycol 200.
2) Sequentially adding the raw materials into a mixing tank, stirring and mixing uniformly, filtering, removing bubbles by using ultrasonic waves, and packaging to obtain the refractive index matching fluid.
3) The refractive index values of the above refractive index-matching fluids were measured at a wavelength of 589.3nm at 20 ℃ and the results are shown in Table 1.
Example 4
The embodiment provides a refractive index matching fluid and a preparation method thereof. The method comprises the following steps:
1) weighing the following raw materials in percentage by mass:
51% ethyl cinnamate, 48.2% benzyl acetate, 0.8% polyoxyethylene 20 oleyl ether.
2) Sequentially adding the raw materials into a mixing tank, stirring and mixing uniformly, filtering, removing bubbles by using ultrasonic waves, and packaging to obtain the refractive index matching fluid.
3) The refractive index values of the above refractive index-matching fluids were measured at a wavelength of 589.3nm at 20 ℃ and the results are shown in Table 1.
Example 5
The embodiment provides a refractive index matching fluid and a preparation method thereof. The method comprises the following steps:
1) weighing the following raw materials in percentage by mass:
85% benzyl benzoate, 14% isopropyl myristate, 0.5% polyvinyl alcohol.
2) Sequentially adding the raw materials into a mixing tank, stirring and mixing uniformly, filtering, removing bubbles by using ultrasonic waves, and packaging to obtain the refractive index matching fluid.
3) The refractive index values of the above refractive index-matching fluids were measured at a wavelength of 589.3nm at 20 ℃ and the results are shown in Table 1.
Example 6
The embodiment provides a refractive index matching fluid and a preparation method thereof. The method comprises the following steps:
1) weighing the following raw materials in percentage by mass:
59.1 percent of benzyl benzoate, 39.4 percent of ethyl anisate and 1.5 percent of span 65.
2) Sequentially adding the raw materials into a mixing tank, stirring and mixing uniformly, filtering, removing bubbles by using ultrasonic waves, and packaging to obtain the refractive index matching fluid.
3) The refractive index values of the above refractive index-matching fluids were measured at a wavelength of 589.3nm at 20 ℃ and the results are shown in Table 1.
Example 7
The embodiment provides a refractive index matching fluid and a preparation method thereof. The method comprises the following steps:
1) weighing the following raw materials in percentage by mass:
84.7 percent of benzyl benzoate, 9 percent of ethyl cinnamate and 1 percent of polyethylene glycol 200.
2) Sequentially adding the raw materials into a mixing tank, stirring and mixing uniformly, filtering, removing bubbles by using ultrasonic waves, and packaging to obtain the refractive index matching fluid.
3) The refractive index values of the above refractive index-matching fluids were measured at a wavelength of 589.3nm at 20 ℃ and the results are shown in Table 1.
Comparative example 1
The present comparative example provides a refractive index matching fluid and a method for preparing the same. The method comprises the following steps:
1) weighing the following raw materials in percentage by mass:
2) sequentially adding the raw materials into a mixing tank, stirring and mixing uniformly, filtering, removing bubbles by using ultrasonic waves, and packaging to obtain the refractive index matching fluid.
3) The refractive index values of the above refractive index-matching fluids were measured at a wavelength of 589.3nm at 20 ℃ and the results are shown in Table 1.
A summary of the refractive index matching fluid formulations and refractive index values for examples 1-7 and comparative example 1 are shown in Table 1.
TABLE 1
As is clear from Table 1, the refractive indexes of the refractive index matching fluids of examples 1 to 7 and comparative example 1 can be controlled to be 1.50 to 1.57 at 20 ℃. This refractive index range just matches the refractive index of glass (around 1.54). The method can be used for optical detection of glass, in particular to stress detection of glass.
Refractive index stability test
The refractive index matching fluids of examples 1 to 7 and comparative example 1 were tested for refractive index values at a wavelength of 589.3nm at 10 deg.C, 15 deg.C, 20 deg.C, 25 deg.C, 30 deg.C, 35 deg.C and 40 deg.C, and the results are shown in Table 2. According to the values in Table 2, taking the data of examples 4-6 and comparative example 1 as examples, a linear equation and a relation curve of the refractive index with temperature change are drawn, and FIG. 1 is a graph showing the refractive index value of the refractive index matching fluid of example 4 with temperature change; FIG. 2 is a graph showing the change of the refractive index value with temperature of the refractive index matching fluid of example 5; FIG. 3 is a graph showing the change of the refractive index value with temperature of the refractive index matching fluid of example 6; FIG. 4 is a graph showing the change of the refractive index value with temperature of the refractive index matching fluid of comparative example 1.
TABLE 2
The linear equation of the refractive index matching fluid of example 4 with respect to temperature is shown in formula I:
n＝1.536775-0.00034T(R2＝0.993)
formula I
Example 5 the linear equation of the refractive index versus temperature of the refractive index matching fluid is shown in equation II:
n＝1.546475-0.0003T(R2＝0.997)
formula II
Example 6 the linear equation of the refractive index versus temperature of the refractive index matching fluid is shown in equation III:
n＝1.55777-0.00032T(R2＝0.994)
formula III
The linear equation of the refractive index versus temperature of the refractive index matching fluid of comparative example 1 is shown in formula IV:
n＝1.55351-0.00069T(R2＝0.997)
formula IV
Where n is the refractive index and T is the temperature.
As can be seen from Table 2, FIGS. 1 to 4, and formulas I to IV, the refractive index matching fluids of examples 1 to 7 were able to maintain a refractive index variation of 0.01 or less and have good temperature stability in a temperature variation range of 10 to 40 deg.C, whereas the refractive index matching fluid of comparative example 1 had a refractive index variation of 0.0203 > 0.01 in a temperature variation range of 10 to 40 deg.C and had poor refractive index stability in this temperature range.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An index matching fluid comprising a lipid compound;
the lipid compound is selected from at least two of butyl acetate, ethyl benzoate, butyl benzoate, benzyl benzoate, triethyl citrate, tributyl citrate, gamma-valerolactone, dimethyl phthalate, diethyl phthalate, isopropyl myristate, ethyl salicylate, benzyl acetate, ethyl benzoylacetate, methyl salicylate, methyl benzoylacetate, ethyl cinnamate, methyl benzoate, ethyl anisate, butyl anisate, isobutyl anisate, propyl anisate, and ethyl p-toluate;
the refractive index of the refractive index matching fluid at 20 ℃ is 1.50-1.57.
2. The refractive index matching fluid of claim 1, wherein the lipid compound is selected from two or three of isopropyl myristate, ethyl benzoylacetate, dimethyl phthalate, butyl benzoate, ethyl anisate, benzyl benzoate, butyl acetate, ethyl cinnamate and benzyl acetate.
3. The refractive index matching fluid according to claim 1, wherein the refractive index matching fluid comprises, in parts by mass,
the lipid compound consists of 20-24 parts of isopropyl myristate and 74-78 parts of ethyl benzoylacetate; or the like, or, alternatively,
the lipid compound consists of 48-52 parts of dimethyl phthalate, 25-29 parts of butyl benzoate and 23.1 parts of ethyl anisate; or the like, or, alternatively,
the lipid compound consists of 33-37 parts of dimethyl phthalate, 44-48 parts of benzyl benzoate and 15-19 parts of butyl acetate; or the like, or, alternatively,
the lipid compound consists of 49-53 parts of ethyl cinnamate and 46-50 parts of benzyl acetate; or the like, or, alternatively,
the lipid compound consists of 83-87 parts of benzyl benzoate and 12-16 parts of isopropyl myristate; or the like, or, alternatively,
the lipid compound consists of 57-61 parts of benzyl benzoate and 37-41 parts of ethyl anisate; or the like, or, alternatively,
the lipid compound consists of 83 to 87 parts of benzyl benzoate and 7 to 11 parts of ethyl cinnamate.
4. The refractive index matching fluid according to any one of claims 1 to 3, further comprising a surfactant.
5. The refractive index matching fluid according to claim 4, wherein the refractive index matching fluid comprises, by mass, 95% to 99.9% of the lipid compound and 0.01% to 5% of the surfactant.
6. The refractive index matching fluid of claim 5, wherein the surfactant is selected from one or more of polyvinyl alcohol, polyethylene glycol 200, polyoxyethylene 20 oil ether, tween-60, span 65, span 85 and 1, 4-butynediol.
7. The refractive index matching fluid of claim 4, wherein the refractive index matching fluid comprises, by mass, 84-86% benzyl benzoate, 13-15% isopropyl myristate, and 0.5-1.5% surfactant.
8. The refractive index matching fluid according to claim 4, wherein the refractive index matching fluid comprises 50-52% by mass of ethyl cinnamate, 47-49% by mass of benzyl acetate, and 0.5-1% by mass of a surfactant.
9. The refractive index matching fluid of claim 4, wherein the refractive index matching fluid comprises, by mass, 58-60% benzyl benzoate, 38-40% ethyl anisate, and 1-2% surfactant.
10. A method for optically inspecting glass, comprising the step of using the refractive index matching fluid according to any one of claims 1 to 9.
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