CN107525913B - Detection device and detection method for migration of phosphate plasticizer from fabric to skin - Google Patents
Detection device and detection method for migration of phosphate plasticizer from fabric to skin Download PDFInfo
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- CN107525913B CN107525913B CN201710713405.3A CN201710713405A CN107525913B CN 107525913 B CN107525913 B CN 107525913B CN 201710713405 A CN201710713405 A CN 201710713405A CN 107525913 B CN107525913 B CN 107525913B
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/36—Textiles
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Abstract
The invention discloses a detection device and a detection method for migration of phosphate plasticizer from fabric to skin. The detection method comprises the following steps: s1, opening a sealing cover of the detection tray body, injecting simulated sweat into the migration cavity, putting a fabric sample with a certain weight, and then sealing the sealing cover; s2 opens the pump body to make the simulated sweat form circulation between the detection disk body and the pump body, and during circulation, the flow path of the simulated sweat in the detection disk body is as follows: inlet-buffer chamber-switching mechanism-migration chamber-outlet; after a period of cyclic migration of S3, the cover was opened and all of the simulated sweat was collected and measured for phosphate plasticizers in the simulated sweat.
Description
Technical Field
The invention relates to a fabric quality detection technology, in particular to a detection device and a detection method for migration of phosphate plasticizers from a fabric to skin.
Background
Phosphate plasticizers have been widely used in textile garments as a commonly used additive in chemical fiber production. However, phosphate plasticizers are toxic and tend to have adverse effects on the human body. Particularly for close-fitting fabrics such as sportswear fabrics and the like, the content of phosphate plasticizer in the fibers forming the fabrics needs to be controlled. The phosphate plasticizer can be dissolved out, transferred and volatilized during the processing and using processes of the plasticizer added into the textile, on one hand, the using performance of the product is influenced, and on the other hand, the phosphate plasticizer is released into the surrounding environment, particularly the phosphate plasticizer is transferred to a human body, and the health and the environment of the human body can be damaged. Therefore, the migration property of the phosphate plasticizer in the textile fabric, particularly the migration property between the phosphate plasticizer and the skin, needs to be detected and analyzed to judge the serviceability of the fabric.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides a detection device and a detection method for migration of phosphate plasticizers from fabric to skin.
In order to achieve the purpose, the invention adopts a technical scheme that: a device for detecting migration of phosphate plasticizer from fabric to skin comprises: the detection disc body comprises a migration cavity and a buffer cavity, wherein an outlet and an inlet are respectively arranged on the migration cavity and the buffer cavity, the outlet and the inlet are respectively connected with the pump body through pipelines, the migration cavity is communicated with the buffer cavity through a switching mechanism, the switching mechanism comprises a first port and a second port, and a valve strip capable of being movably switched is arranged between the first port and the second port;
when the valve strip closes the first port, the valve strip simultaneously opens the second port;
when the valve strip closes the second port, the valve strip simultaneously opens the first port.
In a preferred embodiment of the invention, the detection tray body is provided with a cover capable of being opened.
In a preferred embodiment of the present invention, the cover is made of transparent glass, and a sealing strip is disposed between a circumferential edge of the cover and the detection tray body.
In a preferred embodiment of the present invention, a drainage column is disposed in the migration chamber.
In a preferred embodiment of the present invention, the inner wall of the migration cavity and the outer wall of the drainage column are provided with a plurality of protrusions.
In a preferred embodiment of the present invention, the cross section of the transfer chamber is circular, and the switching mechanism and the outlet are symmetrically disposed at two sides of the circular transfer chamber.
In a preferred embodiment of the invention, the valve strip is in a circular arc shape, and the valve strip can move and switch along the periphery of the circular migration cavity.
In a preferred embodiment of the invention, a rack is arranged on the side surface of the middle part of the valve strip, and the rack is connected with a motor through a gear.
In a preferred embodiment of the present invention, isolation nets are disposed at the first port, the second port and the outlet.
In a preferred embodiment of the invention, a glass ball is also placed in the migration chamber.
In a preferred embodiment of the present invention, the pipeline is further provided with a temperature control cavity, and the temperature control cavity is internally provided with an electric heating wire and a temperature sensor.
In a preferred embodiment of the invention, the cross section of the drainage column is elliptical and is eccentrically close to the switching mechanism in the circular migration cavity.
The other technical scheme adopted by the invention is as follows: a method for detecting the migration of phosphate plasticizers in fabric by using the detection device comprises the following steps:
s1, opening a sealing cover of the detection tray body, injecting simulated sweat into the migration cavity, putting a fabric sample with a certain weight, and then sealing the sealing cover;
s2 opens the pump body to make the simulated sweat form circulation between the detection disk body and the pump body, and during circulation, the flow path of the simulated sweat in the detection disk body is as follows: inlet-buffer chamber-switching mechanism-migration chamber-outlet;
after a period of cyclic migration of S3, the cover was opened and all of the simulated sweat was collected and measured for phosphate plasticizers in the simulated sweat.
In a preferred embodiment of the invention, the fabric sample is a whole piece of fabric, and a square fabric with a certain weight is finally formed through trimming and weighing for a plurality of times; and then completely disassembling the square fabric according to the warps and the wefts.
The invention solves the defects in the background technology, and has the following beneficial effects:
(1) the simulated sweat flows in the detection disc body under the action of the pump body, the fabric sample is stirred, so that the simulated sweat can be fully contacted with the fabric sample, the full migration of the phosphate plasticizer in the sample is ensured, and the migration condition of the phosphate plasticizer to the skin of the human skin and the fabric under the extreme condition (the condition that the human body sweats during movement) is well simulated in the process.
(2) Through the valve strip motion of switching structure, can be under the whole unchangeable condition of simulation sweat flow direction, constantly change the shutoff of first port and second port and open, the direction of circular shape migration intracavity liquid stirring constantly changes like this, makes the continuous transition of migration intracavity stir the direction, and the stirring effect is better, can not appear the sample and is blocked the situation of not stirring in a certain place.
(3) The sealing cover is made of transparent materials, so that the stirring condition of the fabric can be conveniently observed, the sealing cover structure is adopted, simulated sweat and a fabric sample can be conveniently injected into the detection tray body, and the operation is more convenient.
(4) The drainage post can be fine guide constantly switch the back and detect the flow direction of liquid in the dish, and the guide carries out abundant stirring process, and the setting of bump can be better the process of assurance surface fabric simulation and human skin friction, and the simulation effect is better, and the glass ball can further increase the friction of surface fabric sample, guarantees the migration effect.
(5) The buffer cavity enables the first port and the second port to be communicated at one side of the inlet, so that the consistency of liquid flow when the first port and the second port are switched in the switching process of simulated sweat is ensured, the switching time interval is adjustable, and the switching is preferably carried out once in 5-20 s.
(6) The separation net can prevent the fabric sample from flowing out of the migration cavity and ensure that the fabric sample cannot enter the pump body.
(7) The temperature control holds the chamber and can provide the accommodation space for simulation sweat, and the cooperation of heating wire and temperature sensor can be with the temperature control of simulation sweat at comparatively invariable temperature simultaneously, like human body temperature within range, such migration simulation effect is best.
(8) The fabric sample is processed in a mode of completely cutting into a plurality of fragments in the prior art, a large number of fiber stubbles are generated in the mode, the fiber stubbles expose the positions inside fibers, the migration effect of the stubbles is different from that of the side surfaces of the fibers, if the stubbles are too large in quantity, the detection result can be seriously influenced, and therefore, in order to reduce the number of the stubbles, the mode of cutting is replaced by a mode of disassembling warp and weft after the complete fabric sheet is taken during sampling, and the number of the stubbles is greatly reduced.
Drawings
The invention is further explained below with reference to the figures and examples;
FIG. 1 is a schematic cross-sectional view of a detection tray with a first port plugged and a second port open according to a preferred embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a detection tray with a second port plugged and a first port open according to a preferred embodiment of the present invention;
FIG. 3 is a schematic mechanical diagram of a preferred embodiment of the present invention;
in the figure: 1. detecting the disc body; 2. a pump body; 3. a pipeline; 4. a temperature control chamber; 5. an inlet; 6. an outlet; 7. a valve strip; 8. a first port; 9. a second port; 10. a migration chamber; 11. a buffer chamber; 12. a drainage column; 13. salient points; 14. an isolation net; 15. and (7) sealing the cover.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings and examples, which are simplified schematic drawings and illustrate only the basic structure of the invention in a schematic manner, and thus show only the constituents relevant to the invention.
As shown in fig. 1, 2 and 3, a device for detecting migration of phosphate ester plasticizer from a fabric to the skin comprises: the detection disc body 1 and the pump body 2 connected with the detection disc body 1 through a pipeline 3 are arranged, the detection disc body 1 comprises a migration cavity 10 and a buffer cavity 11, an outlet 6 and an inlet 5 are respectively arranged on the migration cavity 10 and the buffer cavity 11, the outlet 6 and the inlet 5 are respectively connected with the pump body 2 through the pipeline 3, the migration cavity 10 is communicated with the buffer cavity 11 through a switching mechanism, the switching mechanism comprises a first port 8 and a second port 9, and a valve strip 7 capable of being movably switched is arranged between the first port 8 and the second port 9; the simulated sweat flows in the detection disc body 1 under the action of the pump body 2, the fabric sample is stirred, so that the simulated sweat can be fully contacted with the fabric sample, and the phosphate plasticizer in the sample can be fully transferred, and the transfer condition of the phosphate plasticizer to the skin under the extreme condition (the condition that the human body sweats during movement) of the skin and the fabric of the human body can be well simulated in the process.
When the valve strip 7 closes the first port 8, the valve strip 7 simultaneously opens the second port 9; when the valve strip 7 closes the second port 9, the valve strip 7 simultaneously opens the first port 8. Through the valve strip 7 motion of switching structure, can be under the whole unchangeable condition of simulation sweat flow direction, constantly change the shutoff of first port 8 and second port 9 and open, the direction of liquid stirring in the circular shape migration chamber 10 constantly changes like this, makes the continuous change in the migration chamber 10 stir the direction, and the stirring effect is better, can not appear the sample and blocked the situation of not stirring in a certain place.
The buffer cavity 11 connects the first port 8 and the second port 9 at one side of the inlet 5, so as to ensure the continuity of liquid flow when the first port 8 and the second port 9 are switched during the switching process of simulated sweat, and the switching time interval is adjustable, preferably once switching is performed for 5-20 s.
The detection disk body 1 is provided with a sealing cover 15 capable of being opened, the sealing cover 15 is made of transparent glass, and a sealing strip is arranged between the circumferential edge of the sealing cover 15 and the detection disk body 1. The sealing cover 15 is made of transparent materials, so that the stirring condition of the fabric can be observed conveniently, the sealing cover 15 is adopted to facilitate injection of simulated sweat and fabric samples into the detection disc body 1, and the operation is convenient.
A drainage column 12 is arranged in the migration cavity 10, the cross section of the drainage column 12 is oval, and the drainage column is eccentrically close to the switching mechanism in the circular migration cavity 10. The inner wall of the migration cavity 10 and the outer wall surface of the drainage column 12 are both provided with a plurality of salient points 13, and glass balls are also placed in the migration cavity 10. The drainage column 12 can be fine guide constantly switch the back and detect the flow direction of liquid in the disk body 1, the guide carries out abundant stirring process, the setting of bump 13 can be better the process of assurance surface fabric simulation and human skin friction, the simulation effect is better, the glass ball can further increase the friction of surface fabric sample, guarantees the migration effect.
The cross section of the migration cavity 10 is circular, and the switching mechanism and the outlet 6 are symmetrically arranged on two sides of the circular migration cavity 10.
The valve strip 7 is in a circular arc shape, and the valve strip 7 can move and switch along the periphery of the circular migration cavity 10.
The side in the middle part of the valve strip 7 is provided with a rack, the rack is connected with a motor through a gear, and the switching action of the valve strip 7 can be controlled by controlling the positive rotation and the negative rotation of the motor.
The first port 8, the second port 9 and the outlet 6 are respectively provided with an isolation net 14, and the isolation nets 14 can prevent the fabric sample from flowing out of the migration cavity 10 and ensure that the fabric sample cannot enter the pump body 2.
The pipeline 3 is also provided with a temperature control accommodating cavity 4, and the temperature control accommodating cavity 4 is internally provided with an electric heating wire and a temperature sensor. Temperature control holds chamber 4 and can provide the accommodation space for simulation sweat, and the cooperation of heating wire and temperature sensor can be with the temperature control of simulation sweat at comparatively invariable temperature simultaneously, like human body temperature within range, such migration simulation effect is best.
A method for detecting the migration of phosphate plasticizers in a fabric by using a detection device comprises the following steps:
s1, opening the sealing cover 15 of the detection tray body 1, injecting simulated sweat into the migration cavity 10, putting a fabric sample with a certain weight, and then sealing the sealing cover 15;
s2 opens the pump body 2 to make the simulated sweat form circulation between the detection disc body 1 and the pump body 2, and during circulation, the flow path of the simulated sweat in the detection disc body 1 is as follows: an inlet 5, a buffer cavity 11, a switching mechanism, a migration cavity 10 and an outlet 6;
after a period of cyclic migration of S3, the entire simulated sweat will be collected by opening the cover 15 and measured for phosphate plasticizers in the simulated sweat.
The fabric sample is a whole piece of fabric, and a square fabric with a certain weight is finally formed through trimming and weighing for a plurality of times; and then completely disassembling the square fabric according to the warps and the wefts. The fabric sample is processed in a mode of completely cutting into a plurality of fragments in the prior art, a large number of fiber stubbles are generated in the mode, the fiber stubbles expose the positions inside fibers, the migration effect of the stubbles is different from that of the side surfaces of the fibers, if the stubbles are too large in quantity, the detection result can be seriously influenced, and therefore, in order to reduce the number of the stubbles, the mode of cutting is replaced by a mode of disassembling warp and weft after the complete fabric sheet is taken during sampling, and the number of the stubbles is greatly reduced.
The simulated sweat is prepared by manual work, 98-99% of the simulated sweat is mainly water, and the pH value of the simulated sweat is 4.2-7.5. The sodium chloride is about 300 mg/100 ml, and 1-2% is small amount of urea, lactic acid, and fatty acid.
In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. A device for detecting migration of phosphate plasticizer from fabric to skin comprises: the detection disc body comprises a migration cavity and a buffer cavity, wherein an outlet and an inlet are respectively arranged on the migration cavity and the buffer cavity, the outlet and the inlet are respectively connected with the pump body through pipelines, the migration cavity is communicated with the buffer cavity through a switching mechanism, the switching mechanism comprises a first port and a second port, and a valve strip capable of being movably switched is arranged between the first port and the second port;
when the valve strip closes the first port, the valve strip simultaneously opens the second port;
when the valve strip closes the second port, the valve strip simultaneously opens the first port.
2. The device for detecting the migration of the phosphate plasticizer from the fabric to the skin according to claim 1, wherein: the detection disk body is provided with a sealing cover capable of being opened.
3. The device for detecting the migration of the phosphate plasticizer from the fabric to the skin according to claim 1, wherein: and a drainage column is arranged in the migration cavity.
4. The device for detecting the migration of the phosphate plasticizer from the fabric to the skin according to claim 3, wherein: the surfaces of the inner wall of the migration cavity and the outer wall of the drainage column are provided with a plurality of salient points.
5. The device for detecting the migration of the phosphate plasticizer from the fabric to the skin according to claim 1, wherein: the cross section of the migration cavity is circular, and the switching mechanism and the outlet are symmetrically arranged on two sides of the circular migration cavity.
6. The device for detecting the migration of the phosphate plasticizer from the fabric to the skin according to claim 3, wherein: the valve strip is arc-shaped, and the valve strip can move and switch along the periphery of the circular migration cavity.
7. The device for detecting the migration of the phosphate plasticizer from the fabric to the skin according to claim 1, wherein: the side of valve strip middle part is provided with the rack, the rack passes through the gear and links up the motor.
8. The device for detecting the migration of the phosphate plasticizer from the fabric to the skin according to claim 1, wherein: isolation nets are arranged at the first port, the second port and the outlet.
9. A method for detecting the migration of phosphate plasticizers in fabrics by using the detection device as claimed in any one of claims 1 to 8, comprising the steps of:
s1, opening a sealing cover of the detection tray body, injecting simulated sweat into the migration cavity, putting a fabric sample with a certain weight, and then sealing the sealing cover;
s2 opens the pump body to make the simulated sweat form circulation between the detection disk body and the pump body, and during circulation, the flow path of the simulated sweat in the detection disk body is as follows: inlet-buffer chamber-switching mechanism-migration chamber-outlet;
after a period of cyclic migration of S3, the cover was opened and all of the simulated sweat was collected and measured for phosphate plasticizers in the simulated sweat.
10. The detection method according to claim 9, characterized in that: the fabric sample is a whole piece of fabric, and a square fabric with a certain weight is finally formed through trimming and weighing for a plurality of times; and then completely disassembling the square fabric according to the warps and the wefts.
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| CN201710713405.3A CN107525913B (en) | 2017-08-18 | 2017-08-18 | Detection device and detection method for migration of phosphate plasticizer from fabric to skin |
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| CN201710713405.3A CN107525913B (en) | 2017-08-18 | 2017-08-18 | Detection device and detection method for migration of phosphate plasticizer from fabric to skin |
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| CN107525913B true CN107525913B (en) | 2020-02-07 |
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| CN111141760B (en) * | 2020-01-21 | 2022-08-30 | 苏州市纤维检验院 | Fabric sweat stain forming appearance detection system and detection method thereof |
| CN111537643B (en) * | 2020-05-22 | 2022-09-09 | 无锡工艺职业技术学院 | Method for detecting content of heavy metal organic compounds in water in plastic pipeline |
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| CN101614726B (en) * | 2009-07-20 | 2014-12-17 | 大连标准检测技术研究中心 | Device for detecting migration volume of chemical substances in food packaging material |
| CN202393673U (en) * | 2011-12-07 | 2012-08-22 | 广东出入境检验检疫局检验检疫技术中心 | Specific migration testing basin for food contact materials |
| CN103728405B (en) * | 2013-12-24 | 2016-12-07 | 中国检验检疫科学研究院 | The research method of timber preservative Transport in a kind of Wood children articles for use |
| CN203849076U (en) * | 2014-04-30 | 2014-09-24 | 上海出入境检验检疫局工业品与原材料检测技术中心 | Single-side soaking device for migration test of food contact materials |
| CN104076104A (en) * | 2014-07-15 | 2014-10-01 | 浙江出入境检验检疫局检验检疫技术中心 | Method for detecting transfer volume of phosphate ester plasticisers in acid sweat in textile |
| CN204556607U (en) * | 2015-03-30 | 2015-08-12 | 凌华级 | A kind of detecting migration quantity of chemical substance in food packaging material |
| CN106996892A (en) * | 2017-03-28 | 2017-08-01 | 四川出入境检验检疫局检验检疫技术中心 | Food contact sheet material specific transfer experiment sampling infuser device |
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