CN108130182B - PC component release agent emulsion and preparation method thereof - Google Patents

PC component release agent emulsion and preparation method thereof Download PDF

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Publication number
CN108130182B
CN108130182B CN201711497817.4A CN201711497817A CN108130182B CN 108130182 B CN108130182 B CN 108130182B CN 201711497817 A CN201711497817 A CN 201711497817A CN 108130182 B CN108130182 B CN 108130182B
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parts
release agent
silicone oil
wax
agent emulsion
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CN108130182A (en
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杨庆红
邵向东
田春
吉兰平
朱雪锋
邹磊磊
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Zhejiang Zhongtian Dongfang fluorosilicone Material Co.,Ltd.
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Zhongtian Dongfang Fluorine Silicon Material Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M173/00—Lubricating compositions containing more than 10% water
    • C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/14—Synthetic waxes, e.g. polythene waxes
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/16—Paraffin waxes; Petrolatum, e.g. slack wax
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/18—Natural waxes, e.g. ceresin, ozocerite, bees wax, carnauba; Degras
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/108—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/22—Heterocyclic nitrogen compounds
    • C10M2215/223—Five-membered rings containing nitrogen and carbon only
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/02—Unspecified siloxanes; Silicones
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/24—Emulsion properties
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/26—Waterproofing or water resistance
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/36—Release agents or mold release agents
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/01—Emulsions, colloids, or micelles

Abstract

The invention relates to a PC member release agent emulsion and a preparation method thereof, wherein the release agent emulsion comprises: modified high-boiling silicone oil, solid wax, isomeric alcohol polyoxyethylene ether, alkyl sulfonate, benzotriazole and water. The PC member release agent emulsion has the advantages of good demolding effect, high efficiency, safety to templates and environment, low cost, thixotropy after dehydration film forming, and capability of blocking pores on the surfaces of the templates and concrete so as to ensure that the surfaces of PC members are smooth and clean and the number of pores is obviously reduced.

Description

PC component release agent emulsion and preparation method thereof
Technical Field
The invention relates to the technical field of release agents, in particular to a PC (polycarbonate) member release agent emulsion and a preparation method thereof.
Background
PC component: the concrete prefabricated member is a concrete product produced by standardized and mechanized processing in a factory. Concrete structure is the main form of building engineering in China, and PC components are one of the components. At present, most of small and medium-sized components are manufactured in a prefabricated mode, so that the labor efficiency can be improved, and the cost can be reduced. However, the appearance of the precast concrete member is often subjected to some holes or burrs when it is demolded. Therefore, in the production of PC components, in addition to the care to correctly operate the machine equipment and to prepare the corresponding raw materials, a safe and efficient release agent is also required.
In order to prevent the concrete from adhering to the formwork during the removal of the formwork, which adversely affects the quality of the product and the reuse of the formwork, a release agent is usually sprayed on the inner wall of the formwork. The release agent plays a role in isolation and lubrication between the template and the concrete surface, so as to overcome the adhesive force between the template and the concrete surface, ensure that the template can be smoothly separated from the concrete when the template is removed, keep the concrete shape intact and protect the template surface from being damaged. The traditional release agent for building templates is mainly oily products such as waste engine oil, soybean oil and the like, and although the cost is low, the release effect is general and the concrete and the templates are easily polluted. According to the characteristics and the actual requirements of the release agent, the PC component adopts the water-based release agent, so that the material cost can be reduced, the component quality can be improved, and the construction is convenient. In addition, some water-based release agents are available on the market, and although the release effect is good, there is a problem that pores are easily generated on the contact surface between concrete and a formwork.
In combination with the actual conditions, the release agent which has the advantages of good release effect, high efficiency, safety to templates and environment, low cost, thixotropy after dehydration film forming, and capability of blocking capillary pores on the surfaces of the templates and concrete so as to enable the surfaces of PC members to be smooth and clean and obviously reduce the number of pores is imperative to be developed.
Disclosure of Invention
The invention aims to provide the release agent which has the advantages of good release effect, high efficiency, safety to templates and environment, low cost, thixotropy after dehydration film forming, capability of blocking pores on the surfaces of the templates and concrete so as to enable the surfaces of PC members to be smooth and clean, and obviously reduced number of pores.
In order to achieve the above object, the technical scheme adopted by the invention is as follows:
the PC member release agent emulsion comprises the following components in parts by weight: 20-26 parts of modified high-boiling silicone oil, 1-5 parts of solid wax, 4-6 parts of isomeric alcohol polyoxyethylene ether, 0.5-3 parts of alkyl sulfonate, 0.1 part of benzotriazole and 60-74.5 parts of water.
In the technical scheme, the demoulding principle of the demoulding agent emulsion is that after the demoulding agent emulsion loses water, solid wax in the components can be solidified at room temperature to form a film so as to fill capillary pores on the surfaces of a template and concrete, and the film and modified high-boiling silicone oil with low surface tension generate a synergistic effect, so that the demoulding agent emulsion has excellent demoulding performance.
Preferably, the modified high-boiling silicone oil is prepared by using cracking waste high-boiling silicone oil or rectified high-boiling silicone oil as a raw material through hydrolysis and addition reaction, and the modified high-boiling silicone oil has controllable viscosity, low activity and high stability.
Preferably, the solid wax is any one of semi-refined or refined paraffin wax, microcrystalline wax, insect wax, polyethylene wax and oxidized polyethylene wax.
A preparation method of a PC member release agent emulsion comprises the following steps:
(1) and preparing an aqueous phase: weighing and uniformly mixing 0.1 part of benzotriazole and 60-74.5 parts of water according to the weight, and heating to 90-95 ℃ for heat preservation for later use;
(2) and preparing an oil phase: 20-26 parts of modified high-boiling silicone oil and 1-5 parts of solid wax are put into a three-necked bottle together, stirring is started, the rotating speed is 500r/min, and the temperature is raised to 95 ℃; after uniformly mixing, adding 4-6 parts of isomeric alcohol polyoxyethylene ether and 0.5-3 parts of alkyl sulfonate, and stirring for 5-15 min;
(3) and preparing an emulsion: slowly dripping the water phase in the step (1) into the oil phase in the step (2) under the conditions that the temperature is 95 ℃ and the stirring speed is 500-1500r/min, and increasing the stirring speed during phase inversion; after the water is added, the heating device is closed, the stirring is continued for 0.5 to 1.5 hours, and the mixture is bottled after being cooled.
In conclusion, the beneficial effects of the invention are as follows: the PC member release agent emulsion has the advantages of good demolding effect, high efficiency, safety to templates and environment, low cost, thixotropy after dehydration film forming, and capability of blocking pores on the surfaces of the templates and concrete so as to ensure that the surfaces of PC members are smooth and clean and the number of pores is obviously reduced.
Detailed Description
The present invention is further illustrated by the following specific examples, which are not intended to limit the scope of the invention.
The modified high-boiling silicone oil is prepared by using cracking waste high-boiling or rectification high-boiling as raw materials and performing hydrolysis and addition reaction to obtain the modified high-boiling silicone oil with controllable viscosity, low activity and high stability. It may be said inert high boiling silicone oil of patent CN 106188545A.
The solid wax is any one of semi-refined or refined paraffin wax, microcrystalline wax, insect wax, polyethylene wax and oxidized polyethylene wax.
Example 1
The PC member release agent emulsion comprises the following components in parts by weight: 20 parts of modified high-boiling silicone oil, 1 part of solid wax, 4 parts of isomeric alcohol polyoxyethylene ether, 0.5 part of alkyl sulfonate, 0.1 part of benzotriazole and 74.5 parts of water.
The preparation method comprises the following steps: (1) preparing a water phase, weighing and uniformly mixing 0.1 part of benzotriazole and 74.5 parts of water according to the weight, and heating to 90 ℃ for heat preservation for later use; (2) preparing an oil phase, namely putting 20 parts of modified high-boiling silicone oil and 1 part of solid wax into a three-necked bottle, starting stirring at the rotating speed of 500r/min, and heating to 95 ℃; after uniformly mixing, adding 4 parts of isomeric alcohol polyoxyethylene ether and 0.5 part of alkyl sulfonate, and stirring for 5 min; (3) slowly dripping the water phase of the (1) into the oil phase of the (2) under the conditions that the temperature is 95 ℃ and the stirring speed is 500r/min, and properly increasing the stirring speed during phase inversion; after the water is added, the heating device is closed, the stirring is continued for 0.5h, and the mixture is bottled after cooling.
Example 2
The PC member release agent emulsion comprises the following components in parts by weight: 26 parts of modified high-boiling silicone oil, 5 parts of solid wax, 6 parts of isomeric alcohol polyoxyethylene ether, 3 parts of alkyl sulfonate, 0.1 part of benzotriazole and 60 parts of water.
The preparation method comprises the following steps: (1) preparing a water phase, weighing and uniformly mixing 0.1 part of benzotriazole and 60 parts of water according to the weight, and heating to 92 ℃ for heat preservation for later use; (2) preparing an oil phase, namely putting 26 parts of modified high-boiling silicone oil and 5 parts of solid wax into a three-necked bottle, starting stirring at the rotating speed of 500r/min, and heating to 95 ℃; after uniformly mixing, adding 6 parts of isomeric alcohol polyoxyethylene ether and 3 parts of alkyl sulfonate, and stirring for 10 min; (3) slowly dripping the water phase of the (1) into the oil phase of the (2) under the conditions that the temperature is 95 ℃ and the stirring speed is 800r/min, and properly increasing the stirring speed during phase inversion; after the water is added, the heating device is closed, the stirring is continued for 1 hour, and the mixture is bottled after being cooled.
Example 3
The PC member release agent emulsion comprises the following components in parts by weight: 21 parts of modified high-boiling silicone oil, 1.5 parts of solid wax, 4 parts of isomeric alcohol polyoxyethylene ether, 1 part of alkyl sulfonate, 0.1 part of benzotriazole and 72.5 parts of water.
The preparation method comprises the following steps: (1) preparing a water phase, weighing and uniformly mixing 0.1 part of benzotriazole and 72.5 parts of water according to the weight, and heating to 95 ℃ for heat preservation for later use; (2) preparing an oil phase, namely putting 21 parts of modified high-boiling silicone oil and 1.5 parts of solid wax into a three-necked bottle together, starting stirring at the rotating speed of 500r/min, and heating to 95 ℃; after uniformly mixing, adding 4 parts of isomeric alcohol polyoxyethylene ether and 1 part of alkyl sulfonate, and stirring for 15 min; (3) slowly dripping the water phase in the step (1) into the oil phase in the step (2) under the conditions that the temperature is 95 ℃ and the stirring speed is 1500r/min, and properly increasing the stirring speed during phase inversion; after the water is added, the heating device is closed, the stirring is continued for 1.5h, and the mixture is bottled after cooling.
Example 4
The PC member release agent emulsion comprises the following components in parts by weight: 23 parts of modified high-boiling silicone oil, 2 parts of solid wax, 5 parts of isomeric alcohol polyoxyethylene ether, 1.5 parts of alkyl sulfonate, 0.1 part of benzotriazole and 68.5 parts of water.
The preparation method comprises the following steps: (1) preparing a water phase, weighing and uniformly mixing 0.1 part of benzotriazole and 68.5 parts of water according to the weight, and heating to 90 ℃ for heat preservation for later use; (2) preparing an oil phase, namely putting 23 parts of modified high-boiling silicone oil and 2 parts of solid wax into a three-necked bottle, starting stirring at the rotating speed of 500r/min, and heating to 95 ℃; after uniformly mixing, adding 5 parts of isomeric alcohol polyoxyethylene ether and 1.5 parts of alkyl sulfonate, and stirring for 5 min; (3) slowly dripping the water phase of the (1) into the oil phase of the (2) under the conditions that the temperature is 95 ℃ and the stirring speed is 500r/min, and properly increasing the stirring speed during phase inversion; after the water is added, the heating device is closed, the stirring is continued for 0.5h, and the mixture is bottled after cooling.
Example 5
The PC member release agent emulsion comprises the following components in parts by weight: 24 parts of modified high-boiling silicone oil, 3 parts of solid wax, 6 parts of isomeric alcohol polyoxyethylene ether, 2 parts of alkyl sulfonate, 0.1 part of benzotriazole and 65 parts of water.
The preparation method comprises the following steps: (1) preparing a water phase, weighing and uniformly mixing 0.1 part of benzotriazole and 65 parts of water according to the weight, and heating to 95 ℃ for heat preservation for later use; (2) preparing an oil phase, namely putting 24 parts of modified high-boiling silicone oil and 3 parts of solid wax into a three-necked bottle, starting stirring at the rotating speed of 500r/min, and heating to 95 ℃; after uniformly mixing, adding 6 parts of isomeric alcohol polyoxyethylene ether and 2 parts of alkyl sulfonate, and stirring for 15 min; (3) slowly dripping the water phase of the (1) into the oil phase of the (2) under the conditions that the temperature is 95 ℃ and the stirring speed is 1500r/min, and properly increasing the stirring speed during phase inversion; after the water is added, the heating device is closed, the stirring is continued for 1.5h, and the mixture is bottled after cooling.
In order to compare the properties of the concrete mold release agent, the mold release agent disclosed in patent CN200810196390.9 was used as a comparative example. Test samples were prepared according to the relevant standards and tested for performance. The test data are shown in table 1.
TABLE 1 test results
Test method Example 1 Example 2 Example 3 Example 4 Example 5 Comparative example 1
Drying film forming time/min GB/T 1728 20 21 20 22 19 41
Mold release performance JC/T 949-2005 Smooth demolding Smooth demolding Smooth demolding Smooth demolding Smooth demolding Smooth demolding
Concrete adhesion/g/m2 JC/T 949-2005 1.99 2.01 2.05 2.21 1.98 30.4
Water resistance JC/T 949-2005 Not dissolving Not dissolving Not dissolving Not dissolving Not dissolving Partially dissolved
Stability performance JC/T 949-2005 Without delamination Without delamination Without delamination Without delamination Without delamination Apparent delamination
The above embodiments are only intended to describe preferred embodiments of the present invention, and do not limit the scope of the present invention. Any simple modifications, equivalent modifications and substitutions made in accordance with the technical spirit of the present invention are also included in the scope of the present invention.

Claims (2)

1. A PC member release agent emulsion is characterized in that: the release agent emulsion comprises the following components in parts by weight: 20-26 parts of modified high-boiling silicone oil, 1-5 parts of solid wax, 4-6 parts of isomeric alcohol polyoxyethylene ether, 0.5-3 parts of alkyl sulfonate, 0.1 part of benzotriazole and 60-74.5 parts of water;
the modified high-boiling-point silicone oil is prepared by using cracking waste high-boiling-point silicone oil or rectified high-boiling-point silicone oil as a raw material through hydrolysis and addition reaction, and has controllable viscosity, low activity and high stability;
the preparation method of the release agent emulsion comprises the following steps:
(1) and preparing an aqueous phase: weighing and uniformly mixing 0.1 part of benzotriazole and 60-74.5 parts of water according to the weight, and heating to 90-95 ℃ for heat preservation for later use;
(2) and preparing an oil phase: 20-26 parts of modified high-boiling silicone oil and 1-5 parts of solid wax are put into a three-necked bottle together, stirring is started, the rotating speed is 500r/min, and the temperature is raised to 95 ℃; after uniformly mixing, adding 4-6 parts of isomeric alcohol polyoxyethylene ether and 0.5-3 parts of alkyl sulfonate, and stirring for 5-15 min;
(3) and preparing an emulsion: slowly dripping the water phase in the step (1) into the oil phase in the step (2) under the conditions that the temperature is 95 ℃ and the stirring speed is 500-1500r/min, and increasing the stirring speed during phase inversion; after the water is added, the heating device is closed, the stirring is continued for 0.5 to 1.5 hours, and the mixture is bottled after being cooled.
2. The PC part release agent emulsion of claim 1, wherein: the solid wax is any one of semi-refined or refined paraffin wax, microcrystalline wax, insect wax, polyethylene wax and oxidized polyethylene wax.
CN201711497817.4A 2017-12-29 2017-12-29 PC component release agent emulsion and preparation method thereof Active CN108130182B (en)

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CN110079376A (en) * 2019-05-13 2019-08-02 中国二十二冶集团有限公司 A kind of wax releasing agent and preparation method thereof
CN112210430A (en) * 2020-10-19 2021-01-12 纪晓健 Polyvinyl alcohol aqueous solution release agent and preparation method thereof

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CN105689638A (en) * 2016-04-18 2016-06-22 苏州兴业材料科技股份有限公司 Water-based aluminum alloy die-casting mold releasing agent and preparation method thereof
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CN106188545A (en) * 2016-08-30 2016-12-07 浙江中天氟硅材料有限公司 Utilize the method that organosilicon high-boiling product prepares inertia high boiling point silicon oil

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