CN103045327B - Water-proof sealing grease for optical instrument and preparation method thereof - Google Patents
Water-proof sealing grease for optical instrument and preparation method thereof Download PDFInfo
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- CN103045327B CN103045327B CN201210561968.2A CN201210561968A CN103045327B CN 103045327 B CN103045327 B CN 103045327B CN 201210561968 A CN201210561968 A CN 201210561968A CN 103045327 B CN103045327 B CN 103045327B
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Abstract
The invention relates to the field of optical auxiliary materials, in particular to a water-proof sealing grease for an optical instrument and a preparation method thereof. The grease, actually a mixture, is characterized by comprising the raw materials in part by weight ratio: two kinds of silicone oils with kinematic viscosities of 0.65-3000 cst and 3000-500000 cst at 25 DEG C, a lipid solubility additive, a plasticizer, and an inorganic gelling agent. The method comprises the following steps: adding the two kinds of silicone oils with kinematic viscosities of 0.65-3000 cst and 3000-500000 cst at 25 DEG C, the lipid solubility additive and the plasticizer in a mixing tank for mixing for 0.5-3 h at the speed of 30-1000 r/min, adding the inorganic gelling agent after the mixture is uniformly mixed for further uniformly mixing, pouring into a plate for spreading, placing in a vacuum drying box for heating 3-8 h, taking out for cooling to an ambient temperature, grinding 3-5 times, and packing if passing the detection. The grease is used for the sealing and lubricating of the optical instruments, has good water resistance, does not dissolve in the water environment, dose not disperse, is strong in air tightness, small in volatility and good in lubricity, has the advantages of no corrosion to metal and glass and has high and low temperature resistance.
Description
Technical field
The present invention relates to optics auxiliary material field, waterproof sealing fat and preparation method thereof for especially a kind of opticinstrument.
Background technology
Opticinstrument is used in the lubricated and sealing of moving parts and the various slide units of opticinstrument in water environment, the performance of possess waterproof, lubricating, sealing with waterproof sealing fat.And as follows with lubricating requirement for the sealing of opticinstrument: opticinstrument the position such as is connected with sealing material for the seam of opticinstrument part and screw, so as to cleaning of dustproof, protection against the tide, waterproof, maintenance optical system, and mildew-resistant, antifog, protection against corrosion.To the requirement of sealing material be: 1. the ability of adhesiving metal and glass is strong, and human body is not adhered to; 2. resistance to air loss is strong; 3. volatility is little, not corroding metal and glass; 4. ageing-resistant, long service life; 5. easy to use, be easy to dismounting.Generally optics lubricating grease is had to following requirement: 1. have enough oilnesies and abrasion resistance, adhesivity is better, can protect opticinstrument part not to be corroded; 2. there is certain high temperature resistant, low-temperature performance.Under the higher use temperature condition of regulation, do not run off, low temperature does not freeze, and keeps lubricating structure to rotate flexibly; 3. there is certain water resisting property; 4. chemical stability is good, is not easy oxidized decomposition and goes bad; 5. colloid stability is good, is difficult for a point oil; 6. in lubricating grease component, should not comprise the nutriment of microorganism growth, not mildew; 7. volatile quantity is little, avoids producing mist of oil; 8. anti-free-running property is good.Be difficult for causing " climbing oil " phenomenon to pollute opticglass part because of wandering, cause mist and mould growth; 9. wire-drawing performance is moderate; 10. mist mechanical impurity.
Many opticinstruments use conventionally in water environment, or be arranged in the environment of outdoor this relative complex, need to carry out special WATER REPELLENT in connection or turned position, otherwise in use thereby inner inlet causes instrument normally to work, its inner member also easily damages because of water inlet, and the water resistance of common lubricating grease can not meet the demands.This just requires the lubricating grease of moving part must take into account waterproof and sealing property, also answers high-low temperature resistant, and when high temperature, waterproof sealing fat affects resistance to air loss regardless of oil, does not freeze to affect the use propertieies such as lubricated and rotation when low temperature.
Summary of the invention
The object of the present invention is to provide a kind of waterproof, sealing, lubricated, mildew-resistant, antifog, protection against corrosion, anti-high low temperature, opticinstrument waterproof sealing fat that weathering resistance is strong of having concurrently.
The invention discloses a kind of opticinstrument waterproof sealing fat, it is characterized in that this waterproof sealing fat is to be mixed with and to be formed by silicone oil, oil soluble additive, softening agent, the inorganic thickening agent of two kinds of different motion viscosity, the parts by weight of above-mentioned each component are as follows:
10～28 parts of the silicone oil that 25 ℃ time, kinematic viscosity is 0.65～3000cst
40～70 parts of the silicone oil that 25 ℃ time, kinematic viscosity is 3000～500000cst
1～20 part of oil soluble additive
0～10 part, softening agent
1～25 part of inorganic thickening agent.
Described silicone oil is one or more the mixture in polymethylphenyl siloxane fluid, methyl-silicone oil, dimethyl silicone oil, containing hydrogen silicone oil, alkyl silicone oil.Described oil soluble additive is one or more the mixture in dioctyl sebacate, sebacic acid two (2-ethylhexyl) fat, ethyl silicon oil, phenyl silicone oil, nonane diacid fat, hexanodioic acid fat.Described softening agent is one or more the mixture in o-phthalic acid dibutyl ester, dibutyl phthalate (DBP), triethyl citrate, acetyl triethyl citrate, tributyl citrate, tri(2-ethylhexyl)acetocitrate.Described inorganic thickening agent is hydrophobic fumed silica.
Opticinstrument of the present invention is as follows by the preparation method of waterproof sealing fat:
(1) by proportioning, kinematic viscosity is that two kinds of silicone oil, oil soluble additive, the softening agent of 0.65～3000cst and 3000～500000cst add agitation vat during by 25 ℃;
(2) start agitator, stir 0.5～3 hour take rotating speed as 30～1000r/min;
(3) above material after mixing completely, add inorganic thickening agent and dispersing and mixing even;
(4) fall after dish and shakeout, put into vacuum drying oven, temperature is 80～120 ℃, and vacuum tightness is 500～760mmHg, heats and time of vacuumizing is 3～8 hours;
(5) heat and vacuumize after by waterproof sealing fat take out be cooled to room temperature, grind mounted box after the assay was approved 3～5 times.
In the present invention, silicone oil is selected the silicone oil of hydrophobic or water-repellancy, and high temperature performance excellence, and the silicone oil collocation of different viscosity, is conducive to guarantee waterproof and low temperature resistant.Being added on of oil soluble additive strengthens and also guaranteed low-temperature performance when lubricity.The interpolation of softening agent has improved the use properties of waterproof sealing fat, makes waterproof sealing fat in high performance situation, be more prone to use, and has also strengthened stability simultaneously.Inorganic thickening agent is selected hydrophobic fumed silica, and the water resistance of system is further strengthened.Preparation process, through vacuumizing and high temperature drying, has been removed lower boiling, low volatile, is also conducive to strengthen the stability of waterproof sealing fat.
Embodiment
Below in conjunction with the concrete example of implementing, a nearly step is set forth the present invention.
Embodiment 1
Formula (portion rate):
The polymethylphenyl siloxane fluid 20 that 25 ℃ time, kinematic viscosity is 200cst
The dimethyl silicone oil 50 that 25 ℃ time, kinematic viscosity is 200000cst
Sebacic acid two (2-ethylhexyl) fat 10
Acetyl triethyl citrate 3
Hydrophobic fumed silica 17.
Polymethylphenyl siloxane fluid that when preparation, kinematic viscosity cst (25 ℃) is 200cst during by 25 ℃ by proportioning, kinematic viscosity cst (25 ℃) is 200000cst 25 ℃ time dimethyl silicone oil, sebacic acid two (2-ethylhexyl) fat, acetyl triethyl citrate add in agitation vat, stir and mix for 2 hours with the rotating speed of 100r/min, add again hydrophobic fumed silica silicon stirring at low speed dispersing and mixing even, after falling to coil, shakeout, put into vacuum drying oven, temperature is 80 ℃, vacuum tightness is 500mmHg, heats and time of vacuumizing is 3 hours; Heating and vacuumize after by waterproof sealing fat take out be cooled to room temperature, grind mounted box after the assay was approved 3 times.
Embodiment 2
Formula (portion rate):
The dimethyl silicone oil 25 that 25 ℃ time, kinematic viscosity is 3000cst
The dimethyl silicone oil 45 that 25 ℃ time, kinematic viscosity is 50000cst
Ethyl silicon oil 15
Tributyl citrate 1
Hydrophobicity aerosil 14.
Dimethyl silicone oil that when preparation, kinematic viscosity is 3000cst during by 25 ℃ by proportioning, kinematic viscosity is 50000cst 25 ℃ time dimethyl silicone oil, sebacic acid two (2-ethylhexyl) fat, acetyl triethyl citrate add in agitation vat, stir and mix for 1 hour with the rotating speed of 300r/min, add again hydrophobic fumed silica stirring at low speed dispersing and mixing even, after falling to coil, shakeout, put into vacuum drying oven, temperature is 90 ℃, vacuum tightness is 600mmHg, heats and time of vacuumizing is 5 hours;
Heating and vacuumize after by waterproof sealing fat take out be cooled to room temperature, grind mounted box after the assay was approved 4 times.
Embodiment 3
Formula (portion rate):
The containing hydrogen silicone oil 30 that 25 ℃ time, kinematic viscosity is 50cst
The dimethyl silicone oil 55 that 25 ℃ time, kinematic viscosity is 300000cst
Nonane diacid fat 5
Dibutyl phthalate 3
Hydrophobicity aerosil 7.
Containing hydrogen silicone oil that when preparation, kinematic viscosity is 50cst during by 25 ℃ by proportioning, kinematic viscosity is 300000cst 25 ℃ time dimethyl silicone oil, nonane diacid fat, dibutyl phthalate add in agitation vat, stir and mix for 3 hours with the rotating speed of 200r/min, add again hydrophobic fumed silica stirring at low speed dispersing and mixing even, after falling to coil, shakeout, put into vacuum drying oven, temperature is 100 ℃, and vacuum tightness is 700mmHg, heats and time of vacuumizing is 8 hours; Heating and vacuumize after by waterproof sealing fat take out be cooled to room temperature, grind mounted box after the assay was approved 5 times.
Waterproof sealing fat in above embodiment soaks 1 in water monthlyly not to be disperseed, and water is not muddy, after opticinstrument assembling, at low temperature-40 ℃, can rotate, and does not freeze maintenance lubricity.
Claims (6)
1. an opticinstrument waterproof sealing fat, is characterized in that this waterproof sealing fat is to be mixed with and to be formed by silicone oil, oil soluble additive, softening agent, the inorganic thickening agent of two kinds of different motion viscosity, and the parts by weight of above-mentioned each component are as follows:
10～28 parts of the silicone oil that 25 ℃ time, kinematic viscosity is 0.65～3000cst
40～70 parts of the silicone oil that 25 ℃ time, kinematic viscosity is 3000～500000cst
1～20 part of oil soluble additive
0～10 part, softening agent
1～25 part of inorganic thickening agent.
2. a kind of opticinstrument waterproof sealing fat according to claim 1, is characterized in that: described silicone oil is one or more the mixture in polymethylphenyl siloxane fluid, methyl-silicone oil, dimethyl silicone oil, containing hydrogen silicone oil, alkyl silicone oil.
3. a kind of opticinstrument waterproof sealing fat according to claim 1, is characterized in that: described oil soluble additive is one or more the mixture in dioctyl sebacate, sebacic acid two (2-ethylhexyl) fat, ethyl silicon oil, phenyl silicone oil, nonane diacid fat, hexanodioic acid fat.
4. a kind of opticinstrument waterproof sealing fat according to claim 1, is characterized in that: described softening agent is one or more the mixture in o-phthalic acid dibutyl ester, dibutyl phthalate (DBP), triethyl citrate, acetyl triethyl citrate, tributyl citrate, tri(2-ethylhexyl)acetocitrate.
5. a kind of opticinstrument waterproof sealing fat according to claim 1, is characterized in that: described inorganic thickening agent is hydrophobic fumed silica.
6. the method for waterproof sealing fat for preparation a kind of opticinstrument claimed in claim 1, is characterized in that the method is made up of following steps:
(1) by proportioning, kinematic viscosity is that two kinds of silicone oil, oil soluble additive, the softening agent of 0.65～3000cst and 3000～500000cst add agitation vat during by 25 ℃;
(2) start agitator, stir 0.5～3 hour take rotating speed as 30～1000r/min;
(3) above material after mixing completely, add inorganic thickening agent and dispersing and mixing even;
(4) fall after dish and shakeout, put into vacuum drying oven, temperature is 80～120 ℃, and vacuum tightness is 500～760mmHg, heats and time of vacuumizing is 3～8 hours;
(5) heat and vacuumize after by waterproof sealing fat take out be cooled to room temperature, grind mounted box after the assay was approved 3～5 times.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210561968.2A CN103045327B (en) | 2012-12-22 | 2012-12-22 | Water-proof sealing grease for optical instrument and preparation method thereof |
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| CN201210561968.2A CN103045327B (en) | 2012-12-22 | 2012-12-22 | Water-proof sealing grease for optical instrument and preparation method thereof |
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| CN103045327B true CN103045327B (en) | 2014-05-28 |
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| CN104450086B (en) * | 2014-11-21 | 2017-09-12 | 深圳市合诚润滑材料有限公司 | A kind of precision instrument mould proof lubricating grease and preparation method thereof |
| CN108165351B (en) * | 2017-12-22 | 2020-11-17 | 武汉博达特种润滑技术有限公司 | High-low temperature instrument oil composition and preparation method thereof |
| CN108034480B (en) * | 2017-12-22 | 2020-10-30 | 武汉博达特种润滑技术有限公司 | Dustproof grease composition for optical instrument and preparation method thereof |
| CN110628225A (en) * | 2019-10-17 | 2019-12-31 | 西安玛珂特新材料科技股份有限公司 | High-grade thread sealing grease |
| CN115895760A (en) * | 2022-12-18 | 2023-04-04 | 云南光电辅料有限公司 | Small-gap precision instrument lubricating grease and preparation method thereof |
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| CN101280173B (en) * | 2008-05-20 | 2010-08-11 | 上海大学 | Neutral pen core following sealant and preparation thereof |
| CN102504751B (en) * | 2011-11-22 | 2014-05-07 | 东莞市普赛达密封粘胶有限公司 | Flame-retardant polyurethane sealant and preparation method thereof |
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