CN112964744A

CN112964744A - Detection method and quality standard of warm-keeping bamboo fiber fabric

Info

Publication number: CN112964744A
Application number: CN202110283642.7A
Authority: CN
Inventors: 李来斌; 黄熠; 王垂涨
Original assignee: Shanghai Shuixing Home Textile Co Ltd
Current assignee: Shanghai Mercury E Commerce Co ltd; Shanghai Shuixing Home Textile Co Ltd
Priority date: 2021-03-16
Filing date: 2021-03-16
Publication date: 2021-06-15
Anticipated expiration: 2041-03-16
Also published as: CN112964744B

Abstract

A detection method of a warm-keeping bamboo fiber fabric and a quality standard thereof relate to the field of textiles. A quality standard of a warm-keeping bamboo fiber fabric comprises A-level, B-level and C-level, wherein the A-level warm-keeping bamboo fiber fabric has the quality standard that the draping coefficient M1 is less than 1.5, the deformation coefficient M2 is less than 1.2, and the heat preservation coefficient M3 is less than 0.3. The quality of the fabric is measured by taking softness, deformability and heat preservation as evaluation indexes, the parameter coverage is wider, the requirement of the A-level warm-keeping bamboo fiber fabric is higher and tighter, and the method is favorable for guiding and guiding enterprises to produce high-quality warm-keeping bamboo fiber fabric.

Description

Detection method and quality standard of warm-keeping bamboo fiber fabric

Technical Field

The invention relates to the field of textiles, in particular to quality evaluation of functional fabrics.

Background

With the improvement of the quality of life, people pay more and more attention to the quality of home textile products. Therefore, the company provides a warm-keeping bamboo fiber fabric, and a preparation method of the warm-keeping bamboo fiber fabric is disclosed in a patent with the patent number of 2018102467204 and the patent name of a sanded soft warm-keeping home textile fabric using bamboo fibers.

After the warm-keeping bamboo fiber fabric is on the market, the warm-keeping bamboo fiber fabric is popular with consumers, and other manufacturers can put forward the warm-keeping bamboo fiber fabric. Therefore, the existing warm-keeping bamboo fiber fabrics on the market are uneven, so that the market disorder is easily caused, and the consumers are not facilitated to quickly select the fabrics with better quality.

Disclosure of Invention

The invention aims to provide a detection method of a warm-keeping bamboo fiber fabric, which is used for quickly detecting the quality of the warm-keeping bamboo fiber fabric.

The invention aims to provide a quality standard of a warm-keeping bamboo fiber fabric, and the warm-keeping bamboo fiber fabric can be graded by using the method.

The technical problem solved by the invention can be realized by adopting the following technical scheme:

a detection method of a warm-keeping bamboo fiber fabric is characterized in that in the first step, a circular fabric sample with a certain area is placed on a disc with a certain diameter, the fabric sags along the periphery of the disc according to the self weight, and the cross-sectional area of the disc is S1;

step two, irradiating the circular fabric sample by using a light source from the upper part of the disc, and obtaining a projection drawing under the disc at normal temperature, wherein the projection area corresponding to the projection drawing under the normal temperature is S2;

step three, heating the disc to a specific temperature T, recording the heating power L1 at the specific temperature T, and irradiating the circular fabric sample from the upper part of the disc by using the same light source to obtain a projection drawing at the temperature T, wherein the projection area corresponding to the projection drawing at the temperature T is S3;

step four, removing the circular fabric sample, heating the disc to a specific temperature T, and recording the heating power L2 at the specific temperature T;

and step five, calculating and obtaining an overhang coefficient M1-S2/S1, a deformation coefficient M2-S2/S3 and a heat preservation coefficient M3-L1/L2.

The quality standard of the warm-keeping bamboo fiber fabric is characterized in that the warm-keeping bamboo fiber fabric is divided into A level, B level and C level, wherein,

the quality standards of the A-grade warm-keeping bamboo fiber fabric are that the suspension coefficient M1 is less than 1.5, the deformation coefficient M2 is less than 1.2, and the heat preservation coefficient M3 is less than 0.3;

the quality standard of the C-level warm-keeping bamboo fiber fabric is that the suspension coefficient M1 is more than 1.7, or the deformation coefficient is more than 1.4, or the heat preservation coefficient M3 is more than 0.6;

the grade-B thermal bamboo fiber fabric is adopted as the thermal bamboo fiber fabric, which is not in accordance with the quality standards of the grade-A thermal bamboo fiber fabric and the grade-C thermal bamboo fiber fabric.

Has the advantages that: the smaller the suspension coefficient is, the higher the flexibility is, the smaller the deformation coefficient is, the less deformation and deformation are easy to occur, the smaller the heat preservation coefficient is, and the better the heat preservation performance is. Firstly, the flexibility, the deformability and the heat preservation performance are simultaneously used as evaluation indexes for measuring the quality of the fabric, the parameter coverage is wider, the requirement of the A-level heat-preservation bamboo fiber fabric is higher and tighter, and the method is favorable for guiding and guiding enterprises to produce high-quality heat-preservation bamboo fiber fabrics. Secondly, the detection method is optimized, and on one hand, three key parameters of the suspension coefficient, the deformation coefficient and the heat preservation coefficient can be obtained by one set of equipment; on the other hand, the whole detection process is simple and convenient to operate.

Drawings

FIG. 1 is a bottom view of one configuration of a disk;

FIG. 2 is a perspective view of another configuration of the disk;

fig. 3 is a schematic diagram of a structure of the sub-disc.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific drawings.

Detection method for warm-keeping bamboo fiber fabric

Step one, a circular fabric sample with a certain area is placed on a disc with a certain diameter, the fabric hangs down along the periphery of the disc according to the self weight, and the cross sectional area of the disc is S1. The thickness of the disc is preferably no greater than 0.5 cm to save cost while allowing the sagging fabric to cover more of the outer wall of the disc to better keep the disc warm in step three. The radius value of the circular fabric is preferably not less than the sum of the radius value of the disc and the thickness value of the disc. So that the drooping fabric can cover the outer wall of the disc more, and the disc is better insulated in the third step. It is further preferred that the radius value of the circular fabric is equal to the sum of the radius value of the disc and the thickness value of the disc. The arrangement has the advantages, and the problem that the measurement result is not obvious due to the fact that the dead weight of the part of the circular fabric exposed outside the circular disc is too large is solved.

And step two, irradiating the circular fabric sample by using a light source from the upper part of the disc, and obtaining a projection view at the normal temperature from the lower part of the disc, wherein the projection area corresponding to the projection view at the normal temperature is S2. The light source may be a point light source, preferably located no less than 10cm directly above the disc. Therefore, the distance from the point light source to the disc is lengthened, on one hand, the formed projection area is larger, the calculation of the suspension coefficient and the deformation coefficient is easier, and the error is smaller. On the other hand, the distance between the disc and the point light source provides an operation space for putting the fabric, and the point light source can be prevented from being touched when the fabric is put in. The light source is preferably a collimated light source, the optical axis of which is preferably parallel to the central axis of the disc. Therefore, the change of the projection area caused by the shaking of the test equipment and the interference of the test environment is avoided, and the measurement accuracy is improved. In order to enable the light source to be positioned right above the disc, the light source is preferably a combined light source, the combined light source is composed of an LED light source for detection and a laser light source for calibration, the LED light source and the laser light source are linked, a mark is arranged on the disc or a support for supporting the disc, and when the laser light source is aligned with the mark, the LED light source is aligned with the disc. Thereby facilitating the positioning and calibration of the light source. The mark can be a cross-shaped mark or a circular mark. The center of the upper surface of the disc may be provided with an upward protrusion, and the mark may be engraved on the protrusion, or the protrusion may be directly used as the mark. At the moment, the center of the fabric is preferably provided with the opening, so that the protrusion is allowed to pass through, the contact area of the fabric and the lower disc is further ensured, and the accuracy of the measured data in the third step is improved. The laser light source is positioned in the center, the number of the LED light sources is at least four, the four LED light sources surround the periphery of the laser light source at equal intervals, and the annular light-diffusing plate is arranged below the LED light sources. Thereby making the light of the LED light source more uniform. The laser light source is preferably a green laser light source emitting green laser light or a red laser light source emitting red laser light, so that light spots are easier to distinguish and are convenient to identify.

And step three, heating the disc to a specific temperature T, recording the heating power L1 at the specific temperature T, and irradiating the circular fabric sample from the upper part of the disc by using the same light source to obtain a projection drawing at the temperature T, wherein the projection area corresponding to the projection drawing at the temperature T is S3. The disk is preferably a thermally conductive metal disk. Thereby allowing the operation of electrically heating the disc in the third step, and heating the disc. Referring to fig. 1, a heating wire 1 is embedded on a disc 2. The height from the electric heating wire 1 to the upper end surface of the disc is not less than 0.4 cm, so that the disc is heated more uniformly. The heating wire 1 is preferably spiral-shaped with one end extending from the center of the lower end of the disc and one end extending from the edge of the lower end of the disc. The temperature of the disc may be detected in real time by a temperature sensor, which is preferably placed at a protrusion of the disc. So that the measured temperature is closer to the temperature of the upper end surface of the disk and the heat conduction performance of the disk is not influenced. The sensitive element of the temperature sensor can be positioned in a sleeve, and is sleeved on the protrusion through the sleeve. The inner diameter of the sleeve at the end of the sleeve engaging projection is preferably gradually reduced from the end toward the center. Thereby facilitating the muff coupling. The measurement of the heating power is not different from the measurement of the heating power of the conventional heat retention rate measuring instrument, and therefore, the detailed description thereof is omitted. Alternatively, referring to fig. 2, the disc is formed by pressing an upper sub-disc 3 and a lower sub-disc 3 together, and the heating wire 1 is pressed between the two sub-discs 3. The heating wire is also preferably helical at this time, but both ends of the heating wire preferably protrude from the edge of the sub-disc, i.e., a double-bolt structure. A groove for embedding the heating wire may be provided above the sub-disc located below. Further preferably, referring to fig. 3, a recess 4 is formed in the upper end face of the sub-disc 3 below to form a circular groove, the heating wire 1 is spirally wound in the circular groove, a channel 6 extending to the outer side of the sub-disc is formed in the side wall of the circular groove, the height of the channel is higher as the channel is closer to the outer side, two ends of the heating wire penetrate through the channel to extend out of the sub-disc, an annular groove is formed in the periphery of the circular groove, an annular protrusion is formed in the position, opposite to the annular groove, of the lower end face of the sub-disc above, the annular protrusion is inserted into the annular groove, so that the circular groove is sealed to form a containing cavity, and the containing. The outer port of the channel may or may not be sealed with a thermally conductive glue, since the higher the structure is closer to the outside, it may in itself limit the overflow of liquid metal.

And step four, removing the circular fabric sample, heating the disc to a specific temperature T, and recording the heating power L2 at the specific temperature T. And step five, calculating and obtaining an overhang coefficient M1-S2/S1, a deformation coefficient M2-S2/S3 and a heat preservation coefficient M3-L1/L2.

Quality standard of warm-keeping bamboo fiber fabric

The heat-preservation bamboo fiber fabric is divided into A level, B level and C level, wherein the quality standards of the A level heat-preservation bamboo fiber fabric are that the suspension coefficient M1 is less than 1.5, the deformation coefficient M2 is less than 1.2 and the heat preservation coefficient M3 is less than 0.3; the quality standard of the C-level warm-keeping bamboo fiber fabric is that the suspension coefficient M1 is more than 1.7, or the deformation coefficient is more than 1.4, or the heat preservation coefficient M3 is more than 0.6; the grade-B thermal bamboo fiber fabric is adopted as the thermal bamboo fiber fabric, which is not in accordance with the quality standards of the grade-A thermal bamboo fiber fabric and the grade-C thermal bamboo fiber fabric.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A detection method of a warm-keeping bamboo fiber fabric is characterized in that in the first step, a circular fabric sample with a certain area is placed on a disc with a certain diameter, the fabric sags along the periphery of the disc according to the self weight, and the cross-sectional area of the disc is S1;

2. The detection method of the warm-keeping bamboo fiber fabric according to claim 1, wherein the thickness of the disc is not more than 0.5 cm.

3. The detection method for the warm-keeping bamboo fiber fabric according to claim 1, wherein the radius value of the circular fabric is not less than the sum of the radius value of the disc and the thickness value of the disc.

4. The detection method of the warm-keeping bamboo fiber fabric according to claim 1, wherein the light source is a point light source, and the point light source is located at a position no less than 10cm above the disc.

5. The detection method of the warm-keeping bamboo fiber fabric according to claim 1, wherein the light source is a parallel light source, and an optical axis of the parallel light source is parallel to a central axis of the disc.

6. The detection method of the warm-keeping bamboo fiber fabric according to claim 1, wherein the light source is a combined light source, and the combined light source is composed of an LED light source for detection and a laser light source for calibration.

7. The detection method of the warm-keeping bamboo fiber fabric according to claim 1, wherein the disc is a heat-conducting metal disc.

8. The detection method of the warm-keeping bamboo fiber fabric according to claim 7, wherein an electric heating wire is embedded in the disc, and the height from the electric heating wire to the upper end face of the disc is not less than 0.4 cm.

9. The quality standard of the warm-keeping bamboo fiber fabric is characterized in that the warm-keeping bamboo fiber fabric is divided into A level, B level and C level, wherein,

the quality standard of the C-level warm-keeping bamboo fiber fabric is that the suspension coefficient M1 is more than 1.7, or the deformation coefficient M2 is more than 1.4, or the heat preservation coefficient M3 is more than 0.6;

10. The quality standard of the warm bamboo fiber fabric according to claim 9, wherein the drape coefficient M1, the deformation coefficient M2 and the heat preservation coefficient M3 are obtained by the detection method of the warm bamboo fiber fabric according to any one of claims 1 to 8.