Silicon-hydrogen content testing device

Abstract

The utility model belongs to the technical field of constructional engineering, and discloses a silicon-hydrogen content testing device which comprises a magnetic stirrer, a reaction mechanism is arranged at the top end of the magnetic stirrer, and the reaction mechanism is attached to the top end of the magnetic stirrer; the reaction mechanism comprises a pear-shaped flask, a magnetic stirrer in the magnetic stirrer is located at the bottom end of the inner wall of the pear-shaped flask, the top end of the pear-shaped flask is communicated with a constant-pressure dropping funnel, the tail ends of the silicone tubes are communicated with a gas sampling measuring tube, and the tail ends of the other group of silicone tubes are communicated with a leveling bottle. According to the utility model, gas is released through the reaction of an object to be measured and alkali liquor, water is pressed into the gas measuring pipe, the volume of the released gas can be measured through the liquid level difference of two times, and the content of silicon and hydrogen in the object to be measured can be calculated. Therefore, the detection data can be more intuitively recorded, the accuracy of the data in the detection process is guaranteed, and the chemical reaction is more sufficient in the chemical reaction process.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of silicon hydrogen content detection, especially to a silicon hydrogen content testing device. BACKGROUND

[0002] Hydrogen-containing silicone oil is a transparent colorless oily liquid, which is one of the most important products in organic silicon materials. Its silane main chain contains a certain amount of active Si-H bonds, which can react with C=C, C=O and other unsaturated bonds to introduce various other functional groups, obtaining various organic silicon products for different purposes, such as organic silicon surfactants, leveling agents and pesticide spreading agents, etc. At the same time, it can be cross-linked into a film at room temperature to form a waterproof layer on the surface of the material, and is widely used in the waterproofing of fabrics, glass, ceramics and building materials industries, as well as the yellowing resistance and cross-linking agent of silicone rubber, etc., with excellent effect.

[0003] The hydrogen content (mass fraction of active hydrogen group) in hydrogen-containing silicone oil is a very important technical index, which directly affects the performance of the products produced with it as raw material. Therefore, it is of great significance to accurately determine the hydrogen content in hydrogen-containing silicone oil to meet different production needs.

[0004] Currently, the determination of hydrogen content in hydrogen-containing silicone oil mainly includes infrared spectroscopy, H-NMR method and chemical method. The infrared spectroscopy method uses the absorption of Si-H bond in hydrogen-containing silicone oil at 2150 cm -1 Around, uses carbon tetrachloride as solvent, determines its absorbance, and calculates the hydrogen content of the sample according to the calibration curve. The H-NMR method uses deuterated chloroform (CCl3D) as solvent and dioxane as internal standard to determine the hydrogen content of hydrogen-containing silicone oil. The above two methods are complex in operation and require high-priced measuring instruments, which are not suitable for general hydrogen-containing silicone oil production enterprises to detect the hydrogen content of hydrogen-containing silicone oil on a daily basis. There are two kinds of chemical methods, one of which is to use Si-H to react with bromine under acidic conditions to produce hydrogen bromide, and the excess bromine reacts with potassium iodide to precipitate iodine, which is titrated with sodium thiosulfate standard solution. The operation is relatively simple, the applicability is wide, the detection result is accurate, but the toxicity pollution of bromine, iodine and mercury chloride-acetic acid solution is relatively large. The other chemical method (also known as alkaline hydrolysis method) for determining hydrogen content is to use a nitrogen determination instrument to displace hydrogen gas by reacting hydrogen-containing silicone oil with alkali solution, read the volume of hydrogen gas released from the gas meter, and calculate the hydrogen content from the gaseous equation. This method is simple in operation, but due to the large number of measurement factors and the need for auxiliary instruments, it cannot meet the needs of ordinary production enterprises for rapid and simple on-site determination. UTILITY MODEL CONTENT

[0005] The silicon-hydrogen content testing device can measure the volume of the released gas through the liquid level difference between the front and rear times, and convert the silicon-hydrogen content of the to-be-measured object.

[0006] The silicon-hydrogen content testing device provided by the embodiment of the utility model,

[0007] The magnetic stirrer is provided with a reaction mechanism at the top end, and the reaction mechanism is attached to the top end of the magnetic stirrer;

[0008] The reaction mechanism comprises a pear-shaped flask, a magnetic stirrer in the magnetic stirrer is located at the inner wall bottom end of the pear-shaped flask, the top end of the pear-shaped flask is communicated with a constant pressure dropping funnel, the top end of the constant pressure dropping funnel is communicated with a group of silica gel pipes, the tail end of the silica gel pipe is communicated with a gas sampling burette, the bottom end of the gas sampling burette is communicated with another group of silica gel pipes, and the tail end of the other group of silica gel pipes is communicated with a leveling bottle.

[0009] According to some embodiments of the utility model, the inside of the pear-shaped flask is filled with accurately weighed samples in advance, and the pear-shaped flask can be replaced by an arc-shaped bottom container.

[0010] According to some embodiments of the utility model, the inside of the constant pressure dropping funnel is filled with sodium hydroxide ethanol solution.

[0011] According to some embodiments of the utility model, the magnetic stirrer is provided with a supporting mechanism beside it, and the supporting mechanism comprises a lower supporting base, and the top end of the lower supporting base is fixedly connected with a supporting rod.

[0012] According to some embodiments of the utility model, the outer wall of the supporting rod is slidably sleeved with a plurality of supporting arms, the side wall of the supporting arm is screw-connected with a fixing nut, and the fixing nut abuts against the outer wall of the supporting plate.

[0013] According to some embodiments of the utility model, the tail end of each group of supporting arms is fixedly connected with a group of lower supporting plates, and the inner wall of each group of lower supporting plates is rotatably connected with a plurality of rotating arms.

[0014] According to some embodiments of the utility model, the tail end of each group of rotating arms is rotatably provided with a group of silica gel heads, the edge of the silica gel head is provided with a silica gel layer, and the silica gel head is provided with a torsional spring at the connecting position with the rotating arm.

[0015] According to some embodiments of the utility model, the outer wall of the lower supporting plate is rotatably connected with a rotating ring at the top end position, the inner wall of the rotating ring is hingedly connected with a plurality of pull rods, and the tail end of each group of pull rods is rotatably connected with the end part of a group of rotating arms.

[0016] According to some embodiments of the utility model, the inner wall of the rotating ring is slidably connected with a sliding tooth ring, the top end of the sliding tooth ring is fixedly connected with a plurality of spring sheets, and the top end of the spring sheet is fixedly connected to the inner wall of the rotating ring.

[0017] According to some embodiments of the utility model, the top end of the lower supporting plate is fixedly connected with a fixed tooth ring, and the fixed tooth ring is engaged with the sliding tooth ring.

[0018] The utility model discloses at least has following beneficial effects:

[0019] The silicon hydrogen content testing device of the utility model passes through the accurate weighing of the sample to be measured and enters the pear-shaped flask, keeps the air tightness of the whole system, puts the sodium hydroxide ethanol solution in the constant pressure dropping funnel, drops the solution into the pear-shaped flask, the measured substance and lye react and release gas, and the water pressure is in the gas measuring tube, and we can measure the gas volume released through the liquid level difference of two times, and the silicon hydrogen content of the measured substance is converted, the research work is simplified and improved on the basis of alkali decomposition method, utilizes the principle that the Si-H bond in hydrogen-containing silicone oil reacts with KOH solution to produce hydrogen, respectively determines the gas volume number generated under the same condition of the measured sample and the standard sample, and the hydrogen content of the measured sample is quickly determined through comparison and conversion.

[0020] Therefore, the utility model can be more intuitive when recording detection data, and the accuracy of data in the above detection process is ensured, and the chemical reaction process is more sufficient. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure schematic view of the silicon hydrogen content testing device of the utility model;

[0022] Figure 2 It is a structure schematic view of the silicon hydrogen content testing device of the utility model; Figure 1 It is a structure schematic view of the support mechanism of the silicon hydrogen content testing device;

[0023] Figure 3 It is a structure schematic view of the support mechanism of the silicon hydrogen content testing device; Figure 1 It is a structure schematic view of the reaction mechanism of the silicon hydrogen content testing device;

[0024] Figure 4 It is a structure schematic view of the reaction mechanism of the silicon hydrogen content testing device; Figure 2 It is a structure schematic view of the lower supporting plate top end of the support mechanism;

[0025] Figure 5 It is a structure schematic view of the lower supporting plate and the rotating ring of the support mechanism; Figure 2 It is a structure schematic view of the lower supporting plate and the rotating ring of the support mechanism;

[0026] REFERENCE SIGNS:

[0027] 100-supporting mechanism; 200-reaction mechanism; 300-magnetic stirrer;

[0028] 1001-lower supporting seat; 1002-supporting rod; 1003-branch arm; 1004-lower supporting plate; 1005-rotating arm; 1006-pull rod; 1007-rotating ring; 1008-silica gel head; 1009-fixed tooth ring; 1010-sliding tooth ring; 1011-spring piece;

[0029] 2001-pear-shaped flask; 2002-constant pressure dropping funnel; 2003-gas sampling burette; 2004-level bottle; 2005-silica gel tube. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purpose, features and advantages of the utility model more apparent, obvious and easy to understand, the specific embodiments of the utility model are described in detail below. In the following description, a lot of specific details are set forth in order to give a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0031] In the description of the utility model, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right and the like, is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the utility model.

[0032] In the description of the utility model, the meaning of "several" is one or more, the meaning of "multiple" is two or more, greater than, less than, more than, etc. are not included in the number, "above", "below", "within" and the like are understood to include the number. If there is a description of "first", "second" and the like, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0033] In the description of the utility model, unless otherwise explicitly limited, the words "set", "install", "connect", "connected" and the like should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0034] The technical scheme of the utility model will be described in detail below by means of the drawings and specific embodiments:

[0035] AsFigures 1 to 5 A silicon hydrogen content testing device is shown, which comprises:

[0036] A magnetic stirrer 300, the top end of which is provided with a reaction mechanism 200, which is attached to the top end of the magnetic stirrer 300;

[0037] The reaction mechanism 200 comprises a pear-shaped flask 2001, the magnetic stirrer in the magnetic stirrer 300 is located at the inner wall bottom end of the pear-shaped flask 2001, the top end of the pear-shaped flask 2001 is communicated with a constant pressure dropping funnel 2002, the top end of the constant pressure dropping funnel 2002 is communicated with a group of silica gel tubes 2005, the end of the silica gel tube 2005 is communicated with a gas sampling burette 2003, the bottom end of the gas sampling burette 2003 is communicated with another group of silica gel tubes 2005, the end of the other group of silica gel tubes 2005 is communicated with a leveling bottle 2004, the inside of the pear-shaped flask 2001 is filled with accurately weighed samples in advance, and the pear-shaped flask 2001 can be replaced by an arc-shaped bottom container, and the inside of the constant pressure dropping funnel 2002 is filled with sodium hydroxide ethanol solution.

[0038] Water is added to the inside of the leveling bottle 2004, and the water flows into the gas sampling burette 2003 through the silica gel tube 2005 at the bottom end of the leveling bottle 2004, the accurately weighed sample is introduced into the pear-shaped flask 2001, and the magnetic stirrer 300 on the magnetic stirrer 300 is placed in the pear-shaped flask 2001, then the pear-shaped flask 2001 is placed above the magnetic stirrer 300, and the bottom end of the constant pressure dropping funnel 2002 is connected with the pear-shaped flask 2001, sodium hydroxide ethanol solution is placed in the constant pressure dropping funnel 2002, and the solution is added dropwise into the pear-shaped flask 2001, the sample and the lye react to release gas, and in the process of reaction, the magnetic stirrer 300 drives the magnetic stirrer to rotate, thereby driving the sodium hydroxide ethanol solution and the sample to be mixed, promoting the reaction between the two, and the gas produced in the reaction process enters the inside of the gas sampling burette 2003 through the constant pressure dropping funnel 2002, so that the gas pressure in the inside of the gas sampling burette 2003 drives the reflux in the inside to the inside of the leveling bottle 2004, so that the liquid level in the inside of the gas sampling burette 2003 drops, and when the sample reaction is completed, the liquid level in the inside of the gas sampling burette 2003 is recorded, and by comparing the liquid level before the reaction, the volume of the released gas can be measured, and the silicon hydrogen content of the sample to be measured can be converted.

[0039] In the embodiment, the magnetic stirrer 300 is provided with a supporting mechanism 100 beside it, the supporting mechanism 100 comprises a lower supporting base 1001, the top end of the lower supporting base is fixedly connected with a supporting rod 1002, the outer wall of the supporting rod 1002 is slidably sleeved with a plurality of groups of supporting arms 1003, the side wall of the supporting arm 1003 is threadedly connected with a fixing nut, and the fixing nut abuts against the outer wall of the supporting plate, the distal ends of the plurality of groups of supporting arms 1003 are respectively fixedly connected with a group of lower supporting plates 1004, the inner walls of each group of lower supporting plates 1004 are respectively rotatably connected with a plurality of groups of rotating arms 1005, the distal ends of each group of rotating arms 1005 are respectively rotatably provided with a group of silica gel heads 1008, the edges of the silica gel head 1008 are provided with a silica gel layer, the silica gel head 1008 is provided with a torsional spring at the position connected with the rotating arm 1005, the outer wall of the lower supporting plate 1004 is rotatably connected with a swivel ring 1007 at the top end position, the inner wall of the swivel ring 1007 is hingedly connected with a plurality of groups of pull rods 1006, the distal ends of each group of pull rods 1006 are rotatably connected with the end portions of a group of rotating arms 1005, the inner wall of the swivel ring 1007 is slidably connected with a sliding tooth ring 1010, the top end of the sliding tooth ring 1010 is fixedly connected with a plurality of groups of spring sheets 1011, the top end of the spring sheet 1011 is fixedly connected to the inner wall of the swivel ring 1007, and the top end of the lower supporting plate 1004 is fixedly connected with a fixed tooth ring 1009, and the fixed tooth ring 1009 is engaged with the sliding tooth ring.

[0040] By rotating the swivel ring 1007, the swivel ring 1007 drives the rotating arm 1005 to flip through the pull rod 1006, the rotating arm 1005 drives the silica gel head 1008 to move, and the plurality of groups of silica gel heads 1008 are close to each other, so as to fix the pear-shaped flask 2001, the constant-pressure dropping funnel 2002 or the level bottle 2004, when the silica gel head 1008 contacts the outer wall of the container, the silica gel head 1008 flips the torsional spring, so that the silica gel head 1008 is more fitted with the outer wall of the container, so that when fixing the reaction container, compared with the original spring clamp, the spring clamp is not easy to slip off from the hand, thereby avoiding damaging the reaction container, in the process of rotating the swivel ring 1007, the swivel ring 1007 drives the sliding tooth ring 1010 to rotate, so that the sliding tooth ring 1010 is blocked by the fixed tooth ring 1009 and slides upward, so that the sliding tooth ring 1010 compresses the spring sheet 1011, after the sliding tooth ring 1010 slides through a group of tooth tips of the fixed ring, the spring sheet 1011 rebounds to push the sliding tooth ring 1010 to reset, so that when no one rotates the swivel ring 1007, the sliding tooth ring 1010 is blocked by the fixed tooth ring 1009 and cannot rotate, so that the swivel ring 1007 cannot rotate, and the reaction container is prevented from loosening and falling off from the plurality of groups of silica gel heads 1008.

[0041] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, as long as the combination of the technical features does not exist in contradiction, it shall be considered as within the scope of the present disclosure.

[0042] The above-described embodiments only express several implementation manners of the present application, the description is relatively specific and detailed, but it shall not be understood as the limitation of the scope of the present application patent. It should be pointed out that, for the ordinary skilled in the art, under the premise of not departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent shall be subject to the appended claims.

Claims

1. A silicon hydride content testing apparatus, characterized by, Include: Magnetic stirrer (300), the top end of the magnetic stirrer (300) is provided with a reaction mechanism (200), the reaction mechanism (200) is attached to the top end of the magnetic stirrer (300); The reaction mechanism (200) includes a pear-shaped flask (2001), the magnetic stirrer in the magnetic stirrer (300) is located at the inner wall bottom end of the pear-shaped flask (2001), the top end of the pear-shaped flask (2001) is communicated with a constant pressure dropping funnel (2002), the top end of the constant pressure dropping funnel (2002) is communicated with a group of silica gel pipes (2005), the end of the silica gel pipe (2005) is communicated with a gas sampling burette (2003), the bottom end of the gas sampling burette (2003) is communicated with another group of silica gel pipes (2005), and the end of the other group of silica gel pipes (2005) is communicated with a leveling bottle (2004).

2. The silicon hydride content testing apparatus of claim 1, wherein, The inside of the pear-shaped flask (2001) is filled with accurately weighed samples in advance, and the pear-shaped flask (2001) can be replaced by an arc-shaped bottom container.

3. The silicon hydride content testing apparatus of claim 1, wherein, The inside of the constant pressure dropping funnel (2002) is filled with sodium hydroxide ethanol solution.

4. The silicon hydride content testing apparatus of claim 1, wherein, The magnetic stirrer (300) is provided with a supporting mechanism (100) beside it, and the supporting mechanism (100) includes a lower supporting seat (1001).

5. The apparatus of claim 4, wherein, A plurality of supporting arms (1003) are slidably sleeved on the outer wall of the supporting rod (1002), the side wall of the supporting arm (1003) is threadedly connected with a fixing nut, and the fixing nut abuts against the outer wall of the supporting plate.

6. The silicon hydride content testing apparatus of claim 5, wherein, The end of each group of supporting arms (1003) is fixedly connected with a group of lower supporting plates (1004), and the inner wall of each group of lower supporting plates (1004) is rotatably connected with a plurality of rotating arms (1005).

7. The silicon hydride content testing apparatus of claim 6, wherein, The end of each group of rotating arms (1005) is rotatably connected with a group of silica gel heads (1008), the edge of the silica gel head (1008) is provided with a silica gel layer, and the silica gel head (1008) is provided with a torsion spring at the connection with the rotating arm (1005).

8. The silicon hydride content testing apparatus of claim 6, wherein, The outer wall of the lower supporting plate (1004) is rotatably connected with a swivel ring (1007) at the top end position, the inner wall of the swivel ring (1007) is hingedly connected with a plurality of pull rods (1006), and the end of each group of pull rods (1006) is rotatably connected with the end of a group of rotating arms (1005).

9. The silicon hydride content testing apparatus of claim 8, wherein, The inner wall of the swivel ring (1007) is slidably connected with a sliding tooth ring (1010), the top end of the sliding tooth ring (1010) is fixedly connected with a plurality of spring sheets (1011), and the top end of the spring sheet (1011) is fixedly connected to the inner wall of the swivel ring (1007).

10. The silicon hydride content testing apparatus of claim 6, wherein, The top end of the lower supporting plate (1004) is fixedly connected with a fixed tooth ring (1009), and the fixed tooth ring (1009) is engaged with the sliding tooth ring.

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