CN111832182B - Evaluation method for EBT value of arc-proof performance of acrylic fiber fabric - Google Patents
Evaluation method for EBT value of arc-proof performance of acrylic fiber fabric Download PDFInfo
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- CN111832182B CN111832182B CN202010704131.3A CN202010704131A CN111832182B CN 111832182 B CN111832182 B CN 111832182B CN 202010704131 A CN202010704131 A CN 202010704131A CN 111832182 B CN111832182 B CN 111832182B
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- 239000004744 fabric Substances 0.000 title claims abstract description 128
- 238000011156 evaluation Methods 0.000 title claims abstract description 19
- 229920002972 Acrylic fiber Polymers 0.000 title claims description 5
- 238000012360 testing method Methods 0.000 claims abstract description 40
- 239000000835 fiber Substances 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 18
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 17
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 17
- 230000001681 protective effect Effects 0.000 claims abstract description 12
- 239000004760 aramid Substances 0.000 claims description 26
- 229920003235 aromatic polyamide Polymers 0.000 claims description 26
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 19
- AYEKOFBPNLCAJY-UHFFFAOYSA-O thiamine pyrophosphate Chemical compound CC1=C(CCOP(O)(=O)OP(O)(O)=O)SC=[N+]1CC1=CN=C(C)N=C1N AYEKOFBPNLCAJY-UHFFFAOYSA-O 0.000 claims description 19
- 230000009172 bursting Effects 0.000 claims description 11
- 229920000433 Lyocell Polymers 0.000 claims description 6
- 229920000742 Cotton Polymers 0.000 claims description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 3
- 229920000297 Rayon Polymers 0.000 claims description 3
- 239000003063 flame retardant Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 229920002334 Spandex Polymers 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000004759 spandex Substances 0.000 claims description 2
- 229920002821 Modacrylic Polymers 0.000 claims 8
- 238000010891 electric arc Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010219 correlation analysis Methods 0.000 abstract 1
- 229910052801 chlorine Inorganic materials 0.000 description 6
- 239000000460 chlorine Substances 0.000 description 6
- 230000000704 physical effect Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 2
- 230000036314 physical performance Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16C—COMPUTATIONAL CHEMISTRY; CHEMOINFORMATICS; COMPUTATIONAL MATERIALS SCIENCE
- G16C60/00—Computational materials science, i.e. ICT specially adapted for investigating the physical or chemical properties of materials or phenomena associated with their design, synthesis, processing, characterisation or utilisation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/12—Cloth
Abstract
The invention discloses an evaluation method of an EBT value of the protective performance of an arc-proof fabric with a nitrilon and a polyvinyl chloride as main components, which comprises the following steps: constructing an evaluation index system of the EBT value of the protective performance of the nitrile-polyvinyl chloride fiber anti-electric arc fabric, selecting different nitrile-polyvinyl chloride fiber anti-electric arc fabrics, testing performance parameters of relevant influence factors of the fabrics according to the evaluation index system, testing the EBT value of the fabrics, determining main influence factors by utilizing SPSS correlation analysis, establishing a multiple regression equation of the EBT value and the main influence factors, and verifying the multiple regression equation, wherein the method has the following beneficial effects: the method for evaluating the EBT value of the arc-proof nitrile-polyvinyl chloride fiber fabric by utilizing the basic performance of the fabric reasonably utilizes the existing equipment in a laboratory, does not need to additionally develop new equipment, solves the problems of high direct evaluation cost, long test period and the like of the arc-proof fabric in the arc-proof performance, is simple and clear, is convenient to operate, and can directly and quickly judge the EBT value of the arc-proof nitrile-polyvinyl chloride fiber fabric.
Description
Technical Field
The invention relates to the technical field of an evaluation method of an EBT value of the arc-proof performance of a nitrile-polyvinyl chloride fiber fabric, in particular to an evaluation method of the EBT value of the arc-proof performance of the nitrile-polyvinyl chloride fiber fabric.
Background
The arc is a gas discharge phenomenon which presents arc-shaped white light and generates high temperature, and the huge heat released instantaneously by the arc can directly burn skin or ignite clothes, and meanwhile, the high temperature can cause explosive expansion of gas and metal in the environment, and the speed is enough to permeate into a human body, so that huge damage is caused to the human body. In the daily work of electric workers, most of electric arc phenomena are adverse to personal safety and equipment safety except for heat source applications such as arc welding, an electric arc furnace and the like. At present, two standards are evaluated for arc protection grade, namely arc thermal protection performance (ATPV value) and material rupture threshold energy (EBT value), and the smaller of the two is taken as arc protection performance of the arc suit.
In terms of arc protection performance testing, the united states and european and other countries established arc protection textile material testing standards ASTM F1959/F1959M, NFPA 70E, IEEE1854, IEC61482, and the like, canada and spain established an arc protection performance testing laboratory, with the canada Kinectrics being one of the most internationally authoritative arc protection performance testing mechanisms. However, no professional test standard and no special test mechanism exist in China, and the protective performance of the arc-preventing fabric cannot be known rapidly and accurately. In order to solve the problems of high cost, long test period and the like in the direct evaluation of the arc protection performance of the arc protection suit, the influence of the basic physical performance of the fabric on the protection performance of the arc protection suit is explored by combining the basic physical performance of the fabric from the mathematical perspective, an evaluation method of the EBT value of the arc protection fabric of the nitrile-chlorine fiber is established, the EBT value of the arc protection fabric taking the nitrile-chlorine fiber as the main component is scientifically evaluated, and a reference basis is provided for the development of the arc protection suit in the electric power industry of China, so that an improved technology is needed to solve the problem in the prior art.
Disclosure of Invention
The invention aims to provide an evaluation method of the EBT value of the arc-proof performance of the nitrile-polyvinyl chloride fiber fabric, which is easy to realize and simple to operate, so as to solve the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the method for evaluating the EBT value of the arc-proof performance of the acrylic and polyvinyl chloride fiber fabric comprises the following steps:
step one: constructing an evaluation index system of the EBT value of the arc-proof performance of the acrylic fiber fabric;
step two: eight different arc-proof fabrics with the nitrilo-chloridized fiber as the main component are selected, and the arc-proof fabrics are respectively: a blend fabric of 58/25/15/2 for the ratio of the acrylic/aramid 1313/1414/conductive fiber, 58/25/15/2 for the ratio of the acrylic/aramid 1313/aramid 1414/conductive fiber, 65/28/5/2 for the ratio of the acrylic/aramid 1313/aramid 1414/conductive fiber, 48/37/15 for the ratio of the acrylic/spandex/tencel/aramid 1414, 48/37/15 for the ratio of the acrylic/tencel/aramid 1414, 53/40/5/2 for the ratio of the acrylic/cotton/aramid 1414/conductive fiber, and for the acrylic/flame retardant viscose;
step three: testing each performance parameter of the 8 selected fabrics according to the constructed EBT value evaluation index system, wherein the parameters comprise thickness, gram weight, thermal resistance, TPP, bursting strength, breaking strength and tearing strength;
step four: testing the EBT value of the selected fabric by using high-current testing equipment;
step five: determining a main influencing factor by utilizing SPSS software correlation analysis;
step six: establishing a multiple regression equation of the EBT value and the main influence factor by using SPSS software;
step seven: according to the multiple regression equation in the step six, after knowing the performance parameters of each arc-proof fabric taking the nitrile-polyvinyl chloride as the main component, the EBT value of the arc-proof fabric can be judged by substituting the equation to calculate.
Preferably, the thickness in the third step: the thickness of the fabric was measured with a fabric thickness gauge.
Preferably, in the third step, the gram weight: the fabric was cut into circles with an area of 100 square centimeters and the grammage of the fabric was tested with a fabric grammage meter.
Preferably, in the third step, the thermal resistance: cutting the fabric into square with side length of 25 cm, and testing the thermal resistance of the fabric by using a flat-plate fabric thermal insulation performance tester.
Preferably, in the third step, TPP: and cutting the fabric into squares with the side length of 15 cm, and testing the TPP value of the fabric by using a thermal protection TPP performance tester.
Preferably, in the third step, bursting strength: cutting the fabric into a round shape with the diameter of 8.1 cm, and testing the bursting strength of the fabric by using a table type electronic fabric bursting strength machine.
Preferably, the step three breaks the strength: cutting the fabric into a rectangle with the length of 20 cm and the width of 5 cm, and testing the warp breaking strength and weft breaking strength of the fabric by using a multifunctional electronic fabric strength machine.
Preferably, the tearing strength in the third step: cutting the fabric into a rectangle with the length of 20 cm and the width of 5 cm, and testing the warp tearing strength and the weft tearing strength of the fabric by using a multifunctional electronic fabric strength machine.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a novel method for effectively evaluating the EBT value of the arc-preventing fabric of the nitrile-chlorine fiber, which utilizes the basic physical properties of the fabric which are easy to test, can simply, conveniently and quickly know the EBT value of the fabric, has clear and clear results, and effectively guides the selection of the arc-preventing fabric of the nitrile-chlorine fiber; the test equipment and the test environment required by the invention are easy to realize, and the method for evaluating the EBT value by utilizing the basic physical properties of the fabric reasonably utilizes the existing equipment of a laboratory, and does not need to additionally develop new equipment.
Drawings
Fig. 1 is a flow chart of an evaluation method of the protective performance EBT value of the acrylic and polyvinyl chloride arc-proof fabric.
Fig. 2 is an evaluation index system of the EBT value of the protective performance of the constructed acrylic and polyvinyl chloride arc-proof fabric.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the present invention provides a technical solution: the method for evaluating the EBT value of the arc-proof performance of the acrylic and polyvinyl chloride fiber fabric comprises the following steps:
step one: constructing an evaluation index system of the EBT value of the arc-proof performance of the acrylic fiber fabric;
step two: eight different arc-preventing fabrics taking the nitrilon as the main component are selected, and are blended fabrics of the nitrilon/aramid 1313/aramid 1414/conductive fiber (58/25/15/2), the nitrilon/aramid 1313/aramid 1414/conductive fiber (65/28/5/2), the nitrilon/tencel/aramid 1414 (48/37/15), the nitrilon/cotton/aramid 1414/conductive fiber (53/40/5/2) and the nitrilon/flame-retardant viscose;
step three: testing each performance parameter of the 8 selected fabrics according to the constructed EBT value evaluation index system;
thickness: the thickness of the fabric is tested by a fabric thickness gauge, wherein the thickness is 37.5 percent of 0.35-0.4mm, 50 percent of 0.41-0.45mm and 12.5 percent of 0.46-0.5 mm;
gram weight: cutting the fabric into a round shape with the area of 100 square centimeters, and testing the gram weight of the fabric by using a fabric gram weight meter, wherein the gram weight is 170-200 g.m -2 25%,201-240 g.m -2 37.5%,241-270 g.m -2 37.5% of (C);
thermal resistance: cutting the fabric into square with side length of 25 cm, and testing the thermal resistance of the fabric with a flat-plate fabric thermal insulation performance tester to obtain a thermal resistance of 0.03-0.035m 2 ·K·W -1 37.5%,0.036-0.04m 2 ·K·W -1 50%,0.041-0.045m 2 ·K·W -1 12.5%;
TPP: cutting the fabric into square with 15 cm side length, and testing the TPP value of the fabric with a thermal protection TPP performance tester, wherein the TPP value is 400-460kW s.m -1 25% of 461-520 kW.s.m -1 37.5%, 521-600kW.s.m -1 37.5% of (C);
burst strength: cutting the fabric into a round shape with the diameter of 8.1 cm, and testing the bursting strength of the fabric by using a YG (B) 031PC type table electronic fabric bursting strength machine, wherein the bursting strength is 12.5% of 600-900N, 50% of 901-1200N and 37.5% of 1201-1500N;
breaking strength: cutting the fabric into a rectangle with the length of 20 cm and the width of 5 cm, and testing the warp breaking strength and the weft breaking strength of the fabric by using a YG026PC type multifunctional electronic fabric strength machine, wherein the warp breaking strength is 12.5% of 600-800N, 37.5% of 801-1000N, 50% of 1001-1200N, 12.5% of 400-600N, 62.5% of 601-800N and 12.5% of 801-1000N;
tear strength: cutting the fabric into a rectangle with the length of 20 cm and the width of 5 cm, and testing the warp tearing strength and the weft tearing strength of the fabric by using a YG026PC type multifunctional electronic fabric strength machine; the warp direction tear strength was 37.5% of 35-45N, 37.5% of 46-55N, 25% of 56-65N, 50% of 35-45N, 25% of 46-55N, and 25% of 56-65N.
Step four: according to ASTM F1959-2012, method for testing electric arc thermal protection Performance values of clothing fabrics, the selected fabrics are tested for EBT value of 11-15cal cm by using Kinectrics high current test equipment of Kinectrics electric arc safety protection test center, canada -2 37.5%,16-20cal cm -2 50%,21-25cal cm -2 12.5% of (C).
Step five: determining a main influencing factor by utilizing SPSS software correlation analysis;
the correlation coefficient is as follows:
the influence of the grammage, the TPP and the weft breaking strength on the EBT value is large according to the correlation coefficient.
Step six: establishing a multiple regression equation of the EBT value and the gram weight, the TPP and the weft breaking strength by using SPSS software;
Y＝-0.027x 1 +0.059x 2 +0.008x 3 -13.25
the correlation coefficient R of the multiple regression equation is 93.6%, and the judgment coefficient R 2 87.5%, x 1 Is given by gram weight, x 2 Is TPP, x 3 The weft breaking strength is high;
step seven: according to the multiple regression equation, the gram weight, TPP and weft breaking strength of the nitrile-polyvinyl chloride anti-electric arc fabric are measured, and the EBT value of the fabric can be calculated.
Example 1: selecting nitrilesBlended fabric of polyvinyl chloride/aramid 1313/aramid 1414/conductive fiber, and tested that the fabric had a gram weight of 238.7 g.m -2 TPP value is 516.948 kW.s.m -1 The weft breaking strength is 958N, and three values are substituted into a regression equation Y= -0.027x 1 +0.059x 2 +0.008x 3 -13.25, and the EBT value of Y is found to be 18.5cal/cm 2 The EBT value was measured to be 19cal/cm 2 ；
Example 2: the blended fabric of the nitrile-polyvinyl chloride/tencel/aramid 1414 is selected, and the gram weight of the fabric is tested to be 263.7 g.m -2 TPP value is 596.988 kW.s.m -1 The weft breaking strength is 818N, and three values are substituted into a regression equation Y= -0.027x 1 +0.059x 2 +0.008x 3 -13.25, and the EBT value of Y is 21.4cal/cm 2 The EBT value was actually measured to be 23cal/cm 2 ；
Example 3: the blended fabric of the acrylic/cotton/aramid 1414/conductive fiber is selected, and the gram weight of the fabric is tested to be 255.5 g.m -2 TPP value is 569.388 kW.s.m -1 The weft breaking strength is 607N, and three values are substituted into a regression equation Y= -0.027x 1 +0.059x 2 +0.008x 3 -13.25, and the EBT value of Y is found to be 18.3cal/cm 2 The EBT value was measured to be 18cal/cm 2 。
The invention provides a novel method for effectively evaluating the EBT value of the arc-preventing fabric of the nitrile-chlorine fiber, which utilizes the basic physical properties of the fabric which are easy to test, can simply, conveniently and quickly know the EBT value of the fabric, has clear and clear results, and effectively guides the selection of the arc-preventing fabric of the nitrile-chlorine fiber; the test equipment and the test environment required by the invention are easy to realize, and the method for evaluating the EBT value by utilizing the basic physical properties of the fabric reasonably utilizes the existing equipment of a laboratory, and does not need to additionally develop new equipment.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A method for evaluating the EBT value of the arc-proof performance of a modacrylic arc-proof fabric is characterized by comprising the following steps: the method comprises the following steps:
step one: constructing an evaluation index system of the EBT value of the arc-proof performance of the acrylic fiber fabric;
step two: eight different arc-proof fabrics with the nitrilo-chloridized fiber as the main component are selected, and the arc-proof fabrics are respectively: a blend fabric of 58/25/15/2 for the ratio of the acrylic/aramid 1313/1414/conductive fiber, 58/25/15/2 for the ratio of the acrylic/aramid 1313/aramid 1414/conductive fiber, 65/28/5/2 for the ratio of the acrylic/aramid 1313/aramid 1414/conductive fiber, 48/37/15 for the ratio of the acrylic/spandex/tencel/aramid 1414, 48/37/15 for the ratio of the acrylic/tencel/aramid 1414, 53/40/5/2 for the ratio of the acrylic/cotton/aramid 1414/conductive fiber, and for the acrylic/flame retardant viscose;
step three: testing each performance parameter of the 8 selected fabrics according to the constructed EBT value evaluation index system, wherein the parameters comprise thickness, gram weight, thermal resistance, TPP, bursting strength, breaking strength and tearing strength;
step four: testing the EBT value of the selected fabric by using high-current testing equipment;
step five: determining a main influencing factor by utilizing SPSS software correlation analysis;
step six: establishing a multiple regression equation of the EBT value and the main influence factor by using SPSS software;
step seven: according to the multiple regression equation in the step six, after knowing the performance parameters of each arc-proof fabric taking the nitrile-polyvinyl chloride as the main component, the EBT value of the arc-proof fabric can be judged by substituting the equation to calculate.
2. The method for evaluating the protective performance EBT value of the modacrylic arc-proof fabric according to claim 1, which is characterized in that: the thickness in the third step is as follows: the thickness of the fabric was measured with a fabric thickness gauge.
3. The method for evaluating the protective performance EBT value of the modacrylic arc-proof fabric according to claim 1, which is characterized in that: gram weight in the third step: the fabric was cut into circles with an area of 100 square centimeters and the grammage of the fabric was tested with a fabric grammage meter.
4. The method for evaluating the protective performance EBT value of the modacrylic arc-proof fabric according to claim 1, which is characterized in that: and in the third step, heat resistance: cutting the fabric into square with side length of 25 cm, and testing the thermal resistance of the fabric by using a flat-plate fabric thermal insulation performance tester.
5. The method for evaluating the protective performance EBT value of the modacrylic arc-proof fabric according to claim 1, which is characterized in that: in the third step, TPP: and cutting the fabric into squares with the side length of 15 cm, and testing the TPP value of the fabric by using a thermal protection TPP performance tester.
6. The method for evaluating the protective performance EBT value of the modacrylic arc-proof fabric according to claim 1, which is characterized in that: bursting strength in the third step: cutting the fabric into a round shape with the diameter of 8.1 cm, and testing the bursting strength of the fabric by using a table type electronic fabric bursting strength machine.
7. The method for evaluating the protective performance EBT value of the modacrylic arc-proof fabric according to claim 1, which is characterized in that: the third step is breaking strength: cutting the fabric into a rectangle with the length of 20 cm and the width of 5 cm, and testing the warp breaking strength and weft breaking strength of the fabric by using a multifunctional electronic fabric strength machine.
8. The method for evaluating the protective performance EBT value of the modacrylic arc-proof fabric according to claim 1, which is characterized in that: tearing strength in the third step: cutting the fabric into a rectangle with the length of 20 cm and the width of 5 cm, and testing the warp tearing strength and the weft tearing strength of the fabric by using a multifunctional electronic fabric strength machine.
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| CN113358984B (en) * | 2021-05-17 | 2022-09-27 | 南通大学 | Evaluation method for ATPV value protection grade of modacrylic arc-proof fabric |
| CN113358854A (en) * | 2021-05-17 | 2021-09-07 | 南通大学 | Aramid viscose fabric EBTEvaluation method of value protection grade |
| CN113158585B (en) * | 2021-05-25 | 2023-09-19 | 国网陕西省电力公司电力科学研究院 | Method, device and equipment for predicting arc resistance of arc-resistant fabric |
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