CN109115644B - Method for detecting acetone dissolution rate of glass fiber - Google Patents
Method for detecting acetone dissolution rate of glass fiber Download PDFInfo
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- CN109115644B CN109115644B CN201810991416.2A CN201810991416A CN109115644B CN 109115644 B CN109115644 B CN 109115644B CN 201810991416 A CN201810991416 A CN 201810991416A CN 109115644 B CN109115644 B CN 109115644B
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Abstract
The invention discloses a method for detecting the acetone dissolution rate of glass fibers, which comprises the following steps: s1: weighing a glass fiber sample with the weight of W1, placing the glass fiber sample and an acetone solution in a round-bottom flask, and placing the round-bottom flask in an automatic temperature-controlled water bath heating pot for heating; s2: taking out the glass fiber sample in the round-bottomed flask, sucking the acetone solution on the glass fiber sample by using absorbent paper, placing the glass fiber sample in the air for natural volatilization for 5 minutes, and then placing the glass fiber sample in an electric heating drying oven for constant-temperature drying, wherein the weight of the dried glass fiber sample is W2; s3: putting the dried glass fiber sample into a muffle furnace, burning at a constant temperature of 625 ℃, burning for 1 hour, taking out the burned glass limit sample, cooling to normal temperature, weighing, wherein the weight of the burned glass fiber sample is W3; s4: and calculating according to an acetone dissolution rate calculation formula.
Description
Technical Field
The invention relates to the technical field of glass fiber processing detection, in particular to a method for detecting the acetone dissolution rate of glass fibers.
Background
At present, two methods are mainly adopted for detecting the acetone dissolution rate of the glass fiber, one method is a method for naturally dissolving the acetone at normal temperature, namely at 23 ℃, the dissolution time is 24 hours, and the other method is a method for extracting by using a Soxhlet extractor, namely a method for reflux extraction at a certain temperature.
The first method has the problems of difficult environmental control, large error and long time, while the second method is relatively reliable, but has relatively complex operation, relatively accurate control on the reflux rate and high experience requirements on operators.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide a method for detecting the acetone dissolution rate of glass fibers, which can better improve the detection efficiency, is convenient to implement and is easy to operate.
In order to solve the technical problems, the invention adopts the following technical scheme:
a method for detecting the acetone dissolution rate of glass fibers comprises the following steps:
s1: weighing a glass fiber sample with the weight of W1, knotting the glass fiber sample, placing the glass fiber sample and an acetone solution in a round-bottom flask, placing the round-bottom flask in an automatic temperature-controlled water bath heating pot for heating, and immersing the round-bottom flask in two thirds of water in the automatic temperature-controlled water bath heating pot, wherein the heating temperature is 80 ℃ and the heating time is 4 hours;
s2: taking out a glass fiber sample in the round-bottomed flask, sucking an acetone solution on the glass fiber sample by using absorbent paper, placing the glass fiber sample in the air for natural volatilization for 5 minutes, then placing the glass fiber sample in an electric heating drying oven for constant-temperature drying for 30 minutes at the drying temperature of 120 ℃, taking out the dried glass fiber sample, cooling to the normal temperature, and weighing, wherein the weight of the dried glass fiber sample is W2;
s3: putting the dried glass fiber sample into a muffle furnace, burning at a constant temperature of 625 ℃, burning for 1 hour, taking out the burned glass limit sample, cooling to normal temperature, weighing, wherein the weight of the burned glass fiber sample is W3;
s4: according to the calculation formula of the acetone dissolution rate
Calculating the acetone dissolution rate, wherein:
c- -acetone solubility,%;
w1- -glass fiber sample mass, g;
w2- -weight of dried glass fiber sample, g;
w3- -weight of glass fiber sample after firing, g.
Therefore, the method for detecting the acetone dissolution rate of the glass fiber disclosed by the invention is used for detecting the acetone dissolution rate, and is simple and convenient to operate and high in efficiency. The automatic temperature control water bath heating pot is used for heating, compared with an acetone natural dissolving method, the dissolving speed can be improved, the dissolving period is shortened, and the environment temperature is effectively controlled. Compared with the method for extracting by a Soxhlet extractor, the method can reduce the operation procedure for controlling the reflux speed, has simple operation process, is convenient for operation by novice, and does not need long-term operation experience.
In the calculation formula of the acetone dissolution rate, the mass of the glass fiber sample minus the weight of the dried glass fiber sample is the mass of the acetone for dissolving the organic matters on the surface of the glass fiber, the mass of the glass fiber sample minus the weight of the burned glass fiber sample is the weight of all the organic matters on the glass fiber, and the mass of the acetone for dissolving the organic matters on the surface of the glass fiber divided by the weight of all the organic matters on the glass fiber is the dissolution rate of the acetone for the glass fiber. The acetone dissolution rate calculated by the formula has high accuracy, the data is easy to obtain, the operation is convenient, the cost is low, and the consumed time is short.
In step S1, 2-3 parts of glass fiber sample is set. The mass of the glass fiber sample is 5 +/-0.5 g.
Therefore, the detection can be carried out for 2-3 times, the reliability and the accuracy of the detection result are improved, and the test error is avoided.
The invention discloses a detection method of glass fiber acetone dissolution rate, which is realized by a glass fiber acetone dissolution rate detection device, wherein the glass fiber acetone dissolution rate detection device comprises an automatic constant-temperature water bath heating pot, a round-bottom flask is placed in the automatic constant-temperature water bath heating pot, a condensing pipe is upwards connected with an outlet at the upper end of the flask, the condensing pipe is connected with a water cooling device, and the detection device further comprises a flask clamping structure for clamping the round-bottom flask.
Like this, utilize flask fixture to carry out the centre gripping to the round flask, avoid the round flask bottle end to contact with automatic thermostatic water bath heating pot bottom of a boiler, can be better carry out the even heating to the spacing and acetone solution of glass in the round flask. Be provided with the condenser pipe, the condenser pipe is connected with water cooling plant, can utilize the condenser pipe to carry out the condensation backward flow to volatile acetone, avoids its loss or volatilizees in the air, and the organic matter to the glass fiber surface that can be better dissolves, improves detection effect. Wherein, the condenser pipe is current structure, and external water cooling plant is prior art, no longer repeated description in this patent application.
Further, the clamping structure is including setting up the support in the automatic control by temperature change water bath heating pot outside, fixed mounting has the test tube clamp on the support, the exposed core of test tube clamp is just right round flask bottleneck sets up.
Like this, the test tube clamp can carry out the centre gripping to round bottom flask neck, and the convenience is fixed the round bottom flask, simple structure, and convenient to use is with low costs.
Drawings
Fig. 1 is a schematic structural diagram of a glass fiber acetone dissolution rate detection device used in the practice of the present invention.
Detailed Description
In specific implementation, the method for detecting the acetone dissolution rate of the glass fiber comprises the following steps:
s1: weighing a glass fiber sample with the weight of W1, knotting the glass fiber sample, placing the glass fiber sample and an acetone solution in a round-bottom flask, placing the round-bottom flask in an automatic temperature-controlled water bath heating pot for heating, and immersing the round-bottom flask in two thirds of water in the automatic temperature-controlled water bath heating pot, wherein the heating temperature is 80 ℃ and the heating time is 4 hours;
s2: taking out a glass fiber sample in the round-bottomed flask, sucking an acetone solution on the glass fiber sample by using absorbent paper, placing the glass fiber sample in the air for natural volatilization for 5 minutes, then placing the glass fiber sample in an electric heating drying oven for constant-temperature drying for 30 minutes at the drying temperature of 120 ℃, taking out the dried glass fiber sample, cooling to the normal temperature, and weighing, wherein the weight of the dried glass fiber sample is W2;
s3: putting the dried glass fiber sample into a muffle furnace, burning at a constant temperature of 625 ℃, burning for 1 hour, taking out the burned glass limit sample, cooling to normal temperature, weighing, wherein the weight of the burned glass fiber sample is W3;
s4: according to the calculation formula of the acetone dissolution rate
Calculating the acetone dissolution rate, wherein:
d- - - - - - - -acetone dissolution rate,%;
w1- -glass fiber sample mass, g;
w2- -weight of dried glass fiber sample, g;
w3- -weight of glass fiber sample after firing, g.
Therefore, the method for detecting the acetone dissolution rate of the glass fiber disclosed by the invention is used for detecting the acetone dissolution rate, and is simple and convenient to operate and high in efficiency. The automatic temperature control water bath heating pot is used for heating, compared with an acetone natural dissolving method, the dissolving speed can be improved, the dissolving period is shortened, and the environment temperature is effectively controlled. Compared with the method for extracting by a Soxhlet extractor, the method can reduce the operation procedure for controlling the reflux speed, has simple operation process, is convenient for operation by novice, and does not need long-term operation experience.
In the calculation formula of the acetone dissolution rate, the mass of the glass fiber sample minus the weight of the dried glass fiber sample is the mass of the acetone for dissolving the organic matters on the surface of the glass fiber, the mass of the glass fiber sample minus the weight of the burned glass fiber sample is the weight of all the organic matters on the glass fiber, and the mass of the acetone for dissolving the organic matters on the surface of the glass fiber divided by the weight of all the organic matters on the glass fiber is the dissolution rate of the acetone for the glass fiber. The acetone dissolution rate calculated by the formula has high accuracy, the data is easy to obtain, the operation is convenient, the cost is low, and the consumed time is short.
In step S1, 2-3 parts of glass fiber sample is set. The mass of the glass fiber sample is 5 +/-0.5 g.
Therefore, the detection can be carried out for 2-3 times, the reliability and the accuracy of the detection result are improved, and the test error is avoided.
The detection method of the glass fiber acetone dissolution rate is realized by a glass fiber acetone dissolution rate detection device, and is shown in figure 1 of the attached drawing of the specification, the glass fiber acetone dissolution rate detection device comprises an automatic constant-temperature water bath heating pot 1, a round-bottom flask 2 is placed in the automatic constant-temperature water bath heating pot 1, a condensing pipe 3 is upwards connected to an outlet at the upper end of the round-bottom flask 2, the condensing pipe 3 is connected with a water cooling device 4, and the glass fiber acetone dissolution rate detection device further comprises a flask clamping structure 5 for clamping the round-bottom flask 2.
Like this, utilize flask fixture to carry out the centre gripping to the round flask, avoid the round flask bottle end to contact with automatic thermostatic water bath heating pot bottom of a boiler, can be better carry out the even heating to the spacing and acetone solution of glass in the round flask. Be provided with the condenser pipe, the condenser pipe is connected with water cooling plant, can utilize the condenser pipe to carry out the condensation backward flow to volatile acetone, avoids its loss or volatilizees in the air, and the organic matter to the glass fiber surface that can be better dissolves, improves detection effect. Wherein, the condenser pipe is current structure, and external water cooling plant is prior art, no longer repeated description in this patent application.
Further, clamping structure 5 is including setting up the support in the automatic control by temperature change water bath heating pot 1 outside, fixed mounting has the test tube clamp on the support, the clamping end of test tube clamp is just right 2 bottleneck settings of round flask.
Like this, the test tube clamp can carry out the centre gripping to round bottom flask neck, and the convenience is fixed the round bottom flask, simple structure, and convenient to use is with low costs.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; these modifications and substitutions do not cause the essence of the corresponding technical solution to depart from the scope of the technical solution of the embodiments of the present invention, and are intended to be covered by the claims and the specification of the present invention.
Claims (5)
1. The method for detecting the acetone dissolution rate of the glass fiber is characterized by comprising the following steps of:
s1: weighing a glass fiber sample with the weight of W1, knotting the glass fiber sample, placing the glass fiber sample and an acetone solution in a round-bottom flask, placing the round-bottom flask in an automatic temperature-controlled water bath heating pot for heating, and immersing the round-bottom flask in two thirds of water in the automatic temperature-controlled water bath heating pot, wherein the heating temperature is 80 ℃ and the heating time is 4 hours;
s2: taking out a glass fiber sample in the round-bottomed flask, sucking an acetone solution on the glass fiber sample by using absorbent paper, placing the glass fiber sample in the air for natural volatilization for 5 minutes, then placing the glass fiber sample in an electric heating drying oven for constant-temperature drying for 30 minutes at the drying temperature of 120 ℃, taking out the dried glass fiber sample, cooling to the normal temperature, and weighing, wherein the weight of the dried glass fiber sample is W2;
s3: putting the dried glass fiber sample into a muffle furnace, burning at a constant temperature of 625 ℃, wherein the burning time is 1 hour, taking out the burned glass fiber sample, cooling to normal temperature, weighing, and weighing the burned glass fiber sample, wherein the weight of the burned glass fiber sample is W3;
s4: according to the calculation formula of the acetone dissolution rate
Calculating the acetone dissolution rate, wherein:
b- - - - - - -acetone solubility,%;
w1- -glass fiber sample mass, g;
w2- -weight of dried glass fiber sample, g;
w3- -weight of glass fiber sample after firing, g.
2. The method for detecting the acetone solubility of glass fiber according to claim 1, wherein in step S1, 2-3 parts of glass fiber sample is provided.
3. The method for detecting the acetone solubility of glass fiber according to claim 1, wherein in step S1, the mass of the glass fiber sample is 5 ± 0.5 g.
4. The method for detecting the acetone solubility of glass fiber according to claim 1, wherein the method for detecting the acetone solubility of glass fiber is realized by a device for detecting the acetone solubility of glass fiber, the device for detecting the acetone solubility of glass fiber comprises an automatic thermostatic water bath heating pot, a round-bottomed flask is placed in the automatic thermostatic water bath heating pot, a condensing pipe is upwards connected to an outlet at the upper end of the flask, the condensing pipe is connected with a water cooling device, and the device further comprises a flask clamping structure for clamping the round-bottomed flask.
5. The method for detecting the acetone dissolution rate of glass fibers as claimed in claim 4, wherein the clamping structure comprises a support arranged outside the automatic temperature-controlled water bath heating kettle, a test tube clamp is fixedly arranged on the support, and a clamping end of the test tube clamp is arranged opposite to the bottleneck of the round-bottom flask.
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