CN114249931B

CN114249931B - Spinning drafting rubber ring suitable for spinning of high-twist yarns

Info

Publication number: CN114249931B
Application number: CN202210032053.6A
Authority: CN
Inventors: 靖腾飞; 张新焱
Original assignee: Wuxi No2 Rubber Co ltd
Current assignee: Wuxi No2 Rubber Co ltd
Priority date: 2022-01-12
Filing date: 2022-01-12
Publication date: 2023-04-25
Anticipated expiration: 2042-01-12
Also published as: CN114249931A

Abstract

The invention provides a spinning drafting rubber ring suitable for spinning heavy twist yarns, which sequentially comprises a first rubber layer, a fabric framework layer and a second rubber layer from inside to outside, wherein the first rubber layer and the second rubber layer comprise the following components in parts by weight: 75-85 parts of nitrile rubber, 15-25 parts of chlorosulfonated polyethylene rubber, 30-40 parts of high-polymerization-degree polyvinyl chloride resin, 5-7 parts of modifier, 6-8 parts of resin emulsion stabilizer, 1-2 parts of stearic acid, 25-40 parts of reinforcing agent, 2-3 parts of accelerator, 5-10 parts of dioctyl ester, 2-3 parts of antioxidant, 3-5 parts of sulfur and 1-1.5 parts of antistatic agent. The spinning drafting rubber ring suitable for spinning the heavy twist yarn has the advantages of wear resistance, tear damage resistance and small friction resistance, improves the service cycle stability of the rubber ring, reduces the maintenance frequency of the rubber ring, and ensures the production working efficiency.

Description

Spinning drafting rubber ring suitable for spinning of high-twist yarns

Technical Field

The invention relates to the technical field of manufacturing of rubber rollers for spinning drafting, in particular to a spinning drafting rubber ring suitable for spinning heavy twist yarns.

Background

The strong twist yarn is a yarn twisted by changing cotton yarn through twisting, and the yarn is twisted by adopting a fiber structure, namely, the relative angular displacement is generated among the cross sections of the cotton yarn, so that the original straightened and parallel fibers and a yarn shaft incline to change the yarn structure, the thick sliver gradually contracts from width to two sides in the twisting process, the two sides are gradually folded and wound into the center of the yarn sliver to form a twisting triangle, and in the twisting triangle, the width and the cross section of the cotton sliver are changed, and the yarn gradually becomes a cylindrical yarn from a flat ribbon shape.

At present, the common yarn twisting coefficient of textile enterprises is generally between 2.8 and 4.2, and the aim of twisting the heavy twist yarn is mainly to increase the twist shrinkage of the yarn; the strong twist yarn is mainly used for weaving weft yarns, and after manufacturing and post treatment, uniform wrinkles are generated on the cloth surface to form unique crepe; so the twisting coefficient of the strong twist yarn generally reaches between 5.0 and 6.5; however, the yarn twist coefficient exceeds the critical twist coefficient of the yarn, the yarn strength is lower than that of the yarn for conventional weaving, the larger the twist coefficient is, the lower the yarn strength is, and the higher the weight CV value and the strength CV value are; meanwhile, in order to obtain relatively high production efficiency, the spindle speed of the spun yarn is generally not lower than that of the same number of woven yarns; the yarn breakage is increased due to the factors, due to the influence of the characteristics of the heavy twist yarn and the production process characteristics, the rubber ring has bad phenomena of concave damage, rubber ring deviation and the like with different degrees in the spinning process, so that the quality stability of the yarn is reduced, the material consumption and the maintenance cost are increased, and in order to meet the development requirements of the heavy twist yarn and the textile, the development of the rubber ring meeting the production requirements of the heavy twist yarn is needed.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide the spinning drafting rubber ring suitable for spinning the heavy-twist yarn, which has obvious improvement in the aspects of wear resistance, tear resistance and friction resistance reduction. The technical scheme adopted by the invention is as follows:

a spinning draft rubber ring suitable for spinning a heavy twist yarn, wherein: the rubber ring sequentially comprises a first rubber layer, a fabric framework layer and a second rubber layer from inside to outside, and the first rubber layer and the second rubber layer comprise the following components in parts by weight: 75-85 parts of nitrile rubber, 15-25 parts of chlorosulfonated polyethylene rubber, 30-40 parts of high-polymerization-degree polyvinyl chloride resin, 5-7 parts of modifier, 6-8 parts of resin emulsion stabilizer, 1-2 parts of stearic acid, 25-40 parts of reinforcing agent, 2-3 parts of accelerator, 5-10 parts of dioctyl ester, 2-3 parts of antioxidant, 3-5 parts of sulfur and 1-1.5 parts of antistatic agent.

Preferably, the spinning drafting rubber ring for spinning the heavy twist yarn comprises the following components: the acrylonitrile unit in the nitrile rubber is 30-35 wt%, and the raw rubber Mooney viscosity ML (1+4) 100 ℃ of the nitrile rubber is 60-65; the chlorine content in the chlorosulfonated polyethylene rubber is 33-37%, and the Mooney viscosity ML (1+4) 100 ℃ of the raw chlorosulfonated polyethylene rubber is 51-57.

Preferably, the spinning drafting rubber ring for spinning the heavy twist yarn comprises the following components: the modifier is a core-shell modifier with a styrene shell as an acrylonitrile core. The modifier manufacturer is Japanese Brillouin, model CSR-B625.

Preferably, the spinning drafting rubber ring for spinning the heavy twist yarn comprises the following components: the resin emulsion stabilizer comprises epoxidized soybean oil and dibutyl tin dilaurate, and the mass ratio of the epoxidized soybean oil to the dibutyl tin dilaurate is 5-7:1.

Preferably, the spinning drafting rubber ring for spinning the heavy twist yarn comprises the following components: the reinforcing agent is amorphous spherical silicon dioxide, the average particle size of the amorphous spherical silicon dioxide is 100-150 nm, the amorphous spherical silicon dioxide can be dispersed into a submicron spherical structure in a primary form, and the manufacturer of the amorphous spherical silicon dioxide is manufactured by Rankine organosilicon (Shanghai) limited company, and the model is R320U.

Preferably, the spinning drafting rubber ring for spinning the heavy twist yarn comprises the following components: the accelerator comprises an accelerator DM and an accelerator D, wherein the mass ratio of the accelerator DM to the accelerator D is 1:3-3.5.

Preferably, the spinning drafting rubber ring for spinning the heavy twist yarn comprises the following components: the anti-aging agent comprises an anti-aging agent RD and an anti-aging agent KY-405, and the mass ratio of the anti-aging agent RD to the anti-aging agent KY-405 is 1:1-1.5.

Preferably, the spinning drafting rubber ring for spinning the heavy twist yarn comprises the following components: the antistatic agent is antistatic agent SN.

Preferably, the spinning drafting rubber ring for spinning the heavy twist yarn comprises the following components: the fabric framework layer is made of polyester cotton core-spun yarns.

The manufacturer of the polyvinyl chloride resin with high polymerization degree is Hangzhou electric group Co., ltd, and the brand is DH-2500.

The invention has the advantages that:

(1) The spinning drafting rubber ring suitable for spinning the heavy twist yarn has the advantages of wear resistance, tear damage resistance and small friction resistance, improves the service cycle stability of the rubber ring, reduces the maintenance frequency of the rubber ring, and ensures the production working efficiency.

(2) According to the spinning drafting rubber ring suitable for spinning the heavy twist yarn, the sulfonated polyethylene rubber and the nitrile rubber are used as main materials, the polyvinyl chloride resin with high polymerization degree and the core-shell modifier are combined, the core of the core-shell modifier is used for absorbing and dispersing impact energy, and the dispersibility of the polyvinyl chloride resin with high polymerization degree and the resin is improved through the shell, so that the purposes of toughening and reducing surface friction are achieved; the reinforcing agent with a special ball structure is selected, and can be dispersed into a submicron spherical structure with a primary form, the special ball structure characteristic is utilized, the stress release is improved according to the microscopic creep of vulcanized rubber, and the flowability, the material dispersion performance, the tensile strength and the tearing strength of the rubber material are improved; the static agent SN can effectively eliminate charges released in the spinning process, and the drafting rubber ring produced according to reasonable compatibility of the components of the first rubber layer and the second rubber layer has excellent dynamic and static properties and excellent comprehensive characteristics of use stability and reliability.

Detailed Description

The invention will be further illustrated with reference to specific examples.

Examples

Examples 1 to 3 the first rubber layer and the second rubber layer were prepared by weighing the raw materials in the parts by weight shown in Table 1, mixing them by an internal mixer, thermoplastic them by an open mill, and mixing them by an internal mixer.

TABLE 1

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The first rubber layer and the second rubber layer obtained in examples 1 to 3 were subjected to detection tests according to the standard FZ/T93050_2017, gb/T528-2009, and the results are shown in table 2:

TABLE 2

Then, the first rubber layer and the second rubber layer obtained in the above examples 1 to 3 were processed into draft rubber rings, and the service lives of test products were tested according to the standard HG/T2729-2012, and the test results are shown in table 3:

TABLE 3 Table 3

Detecting items	Example 1	Example 2	Example 3
				Coefficient of friction (sliding)	1.0369	0.7260	0.7782
Replacement cycle (Tian)	427	466	393
				Injury rate (month)	0.5	0.3	0.7

Analysis of results: from the experimental data in tables 2 and 3, the technical index of the spinning drafting rubber ring suitable for spinning and heavy twisting yarns completely accords with the performance of the product spinning machine in use, effectively meets the technical requirements of the modern novel spinning process, and improves the service life by about 1.5 times through field spinning test.

Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present invention.

Claims

1. The utility model provides a suitable spinning heavy twist yarn spinning draft rubber ring which characterized in that: the rubber ring sequentially comprises a first rubber layer, a fabric framework layer and a second rubber layer from inside to outside, and the first rubber layer and the second rubber layer comprise the following components in parts by weight: 75-85 parts of nitrile rubber, 15-25 parts of chlorosulfonated polyethylene rubber, 30-40 parts of high-polymerization-degree polyvinyl chloride resin, 5-7 parts of modifier, 6-8 parts of resin emulsion stabilizer, 1-2 parts of stearic acid, 25-40 parts of reinforcing agent, 2-3 parts of accelerator, 5-10 parts of dioctyl ester, 2-3 parts of antioxidant, 3-5 parts of sulfur and 1-1.5 parts of antistatic agent;

the modifier is a core-shell modifier with a styrene shell as an acrylonitrile core;

the reinforcing agent is amorphous spherical silicon dioxide, and the average particle size of the amorphous spherical silicon dioxide is 100-150 nm.

2. The spun drawn rubber ring for spinning heavy twist yarn of claim 1, wherein: the acrylonitrile unit in the nitrile rubber is 30-35 wt%, and the raw rubber Mooney viscosity ML (1+4) 100 ℃ of the nitrile rubber is 60-65; the chlorine content in the chlorosulfonated polyethylene rubber is 33-37%, and the Mooney viscosity ML (1+4) 100 ℃ of the raw chlorosulfonated polyethylene rubber is 51-57.

3. The spun drawn rubber ring for spinning heavy twist yarn of claim 1, wherein: the resin emulsion stabilizer comprises epoxidized soybean oil and dibutyl tin dilaurate, and the mass ratio of the epoxidized soybean oil to the dibutyl tin dilaurate is 5-7:1.

4. The spun drawn rubber ring for spinning heavy twist yarn of claim 1, wherein: the accelerator comprises an accelerator DM and an accelerator D, wherein the mass ratio of the accelerator DM to the accelerator D is 1:3-3.5.

5. The spun drawn rubber ring for spinning heavy twist yarn of claim 1, wherein: the anti-aging agent comprises an anti-aging agent RD and an anti-aging agent KY-405, and the mass ratio of the anti-aging agent RD to the anti-aging agent KY-405 is 1:1-1.5.

6. The spun drawn rubber ring for spinning heavy twist yarn of claim 1, wherein: the antistatic agent is antistatic agent SN.

7. The spun drawn rubber ring for spinning heavy twist yarn of claim 1, wherein: the fabric framework layer is made of polyester cotton core-spun yarns.