CN112442774A - Technology for blending core-spun yarn by using chopped glass fiber - Google Patents
Technology for blending core-spun yarn by using chopped glass fiber Download PDFInfo
- Publication number
- CN112442774A CN112442774A CN202011468686.9A CN202011468686A CN112442774A CN 112442774 A CN112442774 A CN 112442774A CN 202011468686 A CN202011468686 A CN 202011468686A CN 112442774 A CN112442774 A CN 112442774A
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- China
- Prior art keywords
- glass fibers
- chopped glass
- glass fiber
- core
- yarn
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/36—Cored or coated yarns or threads
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/04—Blended or other yarns or threads containing components made from different materials
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/12—Threads containing metallic filaments or strips
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/16—Yarns or threads made from mineral substances
- D02G3/18—Yarns or threads made from mineral substances from glass or the like
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/447—Yarns or threads for specific use in general industrial applications, e.g. as filters or reinforcement
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2101/00—Inorganic fibres
- D10B2101/02—Inorganic fibres based on oxides or oxide ceramics, e.g. silicates
- D10B2101/06—Glass
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2101/00—Inorganic fibres
- D10B2101/20—Metallic fibres
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
The invention discloses a process for blending core-spun yarns by using chopped glass fibers. And feeding the blended material into a drawing machine for drawing treatment, then drawing treatment to form blended yarn, feeding the blended yarn and the chopped glass fiber into a feed inlet of an air friction spinning machine through a special closed feeding machine at a preset speed, uniformly winding the blended yarn and the chopped glass fiber on continuous glass fiber and copper wire through the air friction spinning machine, and cutting the chopped glass fiber from waste glass fiber by a glass fiber cutting machine. The technical problems that the quality of the produced core-spun yarn is poor and the friction coefficient is unstable due to the difference between the content of the chopped glass fiber in the existing core-spun yarn and a theoretical value are solved.
Description
Technical Field
The invention relates to the technical field of glass fiber composite materials, in particular to a process for blending core-spun yarns by using chopped glass fibers.
Background
The existing manufacturing process of the core-spun yarn for the brake band comprises the following steps: melting quartz sand at high temperature, adding a specific softening agent for wire drawing, and chopping by a wet method to form chopped glass fibers. Then blending the blended yarn with organic or other inorganic fibers through a wool making machine, then preparing fine blended yarn through a drawing machine, feeding a plurality of fine blended yarns into a drawing machine for drawing, feeding yarn ends of the blended yarns subjected to drawing treatment into an air friction spinning machine, and uniformly winding the blended yarns on the outer surfaces of parallel continuous glass fibers and copper wires through the air friction spinning machine to prepare the covering yarn for the reinforced material.
Chinese patent document (publication number: CN 202989381U) discloses a special device for blending chopped glass fibers without sealing treatment, which solves the technical problems of reducing the loss rate of yarns, improving the high temperature resistance and reducing the wear rate of finished products. This device includes coarse fodder, return air duct, fan I, pipeline I, blendor, fan II, whirlwind mouth, coarse fodder, pipeline II, pipeline III, little coarse fodder, its characterized in that coarse fodder, return air duct, fan I, pipeline I, blendor, fan II are connected in proper order, and the coarse fodder is provided with the whirlwind mouth, and fan II is connected to the whirlwind mouth, connects fan II to pass through pipeline II, pipeline III and connects little coarse fodder (11). The device can ensure the looseness of the chopped glass fibers, the loss on ignition of the yarns is controlled to be less than 25 percent, the high temperature resistance is enhanced, and the performance of the friction material is greatly improved.
The prior manufacturing process of the core-spun yarn blended by chopped glass fiber has the following defects: the chopped glass fiber is mixed with other fibers according to a certain proportion in the mixing process, in the subsequent carding process of a drawing machine, the chopped glass fiber drops partially due to the fact that the own gram weight of the chopped glass fiber is heavier than that of other fibers, the chopped glass fiber drops partially in the drawing process, and the chopped glass fiber is lost partially in the production process of an air friction spinning machine, so that the proportion of the chopped glass fiber in the final finished product core-spun yarn is seriously inconsistent with theoretical data, and the scientificity and the rigor of the production process of the product are violated. The stability of the produced core-spun yarn is poor, and the core-spun yarn can only be used as a base material of a low-grade friction material. Meanwhile, the scattered chopped glass fibers can cause dust in the whole production workshop to fly all day, the production environment is poor, and the health of workers can be damaged.
Disclosure of Invention
In order to solve the technical problems, the invention provides a process for blending the core-spun yarn by using the chopped glass fibers, which can ensure that the components of the chopped glass fibers in the core-spun yarn are consistent with the production requirements.
The technical scheme adopted by the invention for solving the technical problems is as follows: blending organic fibers or inorganic fibers by a wool making machine to prepare a blended material, feeding the blended material into a sliver discharging machine for sliver discharging treatment, then performing drawing treatment to form blended yarns, feeding the blended yarns and chopped glass fibers into a feed inlet of an air friction spinning machine simultaneously by a special closed feeding machine according to a preset speed, uniformly winding the blended yarns and the chopped glass fibers on continuous glass fibers and copper wires by the air friction spinning machine, and cutting the chopped glass fibers by waste glass fibers by a glass fiber cutting machine.
The invention fully utilizes the waste materials in the glass fiber production process, processes the waste glass fibers into the chopped glass fibers, keeps the sealing among all devices in the production process, and prevents the leakage of the chopped glass fibers, thereby preventing the environmental pollution and the insufficient content of the chopped glass fibers in the core-spun yarns. The environmental sanitation in the production workshop is improved and the product quality of the core-spun yarn is improved.
Further, the waste glass fibers are screened before being cut by a fiberglass cutter. In the production process of the chopped glass fiber, the size of a small amount of waste glass fiber may not meet the production requirement, and the part of defective glass fiber needs to be screened, so that the product yield of the chopped glass fiber is improved.
Further, the mixing ratio of the blended yarn to the chopped glass fiber is 1:3 parts by weight. The chopped glass fiber is soft in texture, can form a better solid material by being matched with other fibers, and the core-spun yarn with the content of the chopped glass fiber has better folding resistance, so that the service life of the brake band base material can be prolonged.
Further, the chopped glass fibers and the blended yarn were fed to the air friction spinning machine at a rate of 1.5 m/s. At this rate, the air friction spinning machine was fed so that the blended yarn and chopped glass fibers were more evenly wrapped around the continuous glass fibers and copper wire.
Furthermore, the continuous glass fiber is alkali-free glass fiber with the number of 600 Tex-800 Tex. The alkali-free glass fiber has better tensile strength than common glass fiber, and the covering yarn using the alkali-free glass fiber as a base material has better tensile property.
Further, the copper wire is one of brass wires having a cross-sectional diameter of 0.12mm or a cross-sectional diameter of 0.15 mm. Continuous experiments show that the brass wires with the two common specifications can form a better matching effect with the alkali-free glass fiber, so that the braided brake band is not easy to break.
Compared with the prior art: the invention uses the waste glass fiber as the raw material, and if the waste glass fiber is not treated, a large amount of industrial waste can be generated, thus causing pollution to the environment. The invention can save cost and protect environment. Meanwhile, the special closed feeding machine is adopted, so that the generation of chopped glass fiber scraps can be reduced, the chopped glass fibers are completely utilized, and the content of the chopped glass fibers in the core-spun yarn meets the production requirement. The brake band produced by the process has accurate friction coefficient value, and can be widely applied to various medium-high grade friction materials.
Detailed Description
The process for blending the core-spun yarn by using the chopped glass fibers comprises the steps of blending one or more organic fiber/inorganic fiber raw materials by a wool blending machine, wherein the wool blending machine can open and mix the fiber raw materials and remove impurities in the raw materials to prepare the blended material for the process. The blended yarn is sent into a yarn discharging machine for yarn discharging treatment, the yarn discharging machine can straighten fibers in the blended yarn to prepare fine blended yarns, and then the fine blended yarns are subjected to drawing treatment to form blended yarns with moderate thickness. The drawing treatment is to draw 4-6 blended yarns and feed the blended yarns into a drawing frame to prepare a blended yarn, and the thick section and the thin section of each blended yarn are overlapped with each other, so that the unevenness of the long section and the fragment of the blended yarn is improved. The weight unevenness of the blended yarn is about 6.0 percent, and the weight unevenness of the blended yarn after blending can be reduced to below 1 percent.
The blended yarn with uniform thickness and the chopped glass fiber to be processed are simultaneously fed into a feed port of an air friction spinning machine through a special closed feeder according to the speed of 1.5m/s, and the closed feeder can prevent the chopped glass fiber from leaking outside and can ensure that the content of the chopped glass fiber in the core-spun yarn is the same as a theoretical value. In the process, the chopped glass fibers are mixed finally, so that redundant sealing procedure settings can be reduced.
The air friction spinning machine uniformly and tightly winds the blended yarn and the chopped glass fiber on the surfaces of the continuous glass fiber and the copper wire by virtue of centrifugal force to form the rope-shaped yarn with the core-spun structure. Wherein the continuous glass fibers and the copper wires form the inner core of the core-spun yarn and the chopped glass fibers form the outer skin of the core-spun yarn.
The core spun yarn is used to form a reinforcing base for friction materials, and any mechanical equipment and various vehicles in motion must have braking or transmission means. Friction materials are critical components on such brakes or transmissions. Its primary function is to absorb or transmit power by friction. For example, the clutch plate transmits power, and the brake plate absorbs kinetic energy. They enable the safe and reliable operation of machinery and various motor vehicles. Friction material is a widely used and very critical material.
In the process, inorganic fibers or organic fibers and chopped glass fibers are mixed according to the weight ratio of 1: 3. The chopped glass fiber is mainly formed by melting quartz sand at high temperature, adopting a special impregnating compound (softening agent) to draw protofilaments, and carrying out on-line chopping by a wet method or chopping a product glass fiber. The chopped glass fibers adopted by the process are mainly prepared by the second method. The existing brake band production company can generate a certain amount of waste glass fibers every day in the production process, if the waste glass fibers are not treated, a large amount of industrial waste can be generated, the environment is polluted, and the waste glass fibers are cut into chopped glass fibers with a certain length by a glass fiber cutting machine to be used for manufacturing core-spun yarns. These chopped glass fibers are also screened prior to processing to remove the short-sized chopped glass fibers and impurities. The cut glass fibers can be screened by a dust cage or a screen, and qualified chopped glass fibers are selected for later use.
The organic fiber material may be: terylene, acrylic fiber, chinlon or polypropylene fiber. The inorganic fiber can be selected from pre-oxidized fiber, carbon fiber, boron fiber, ceramic fiber, etc. The chopped glass fiber is matched with other organic or inorganic fibers to form a solid material with stable structure, and the fixing material has good wrapping performance as a skin.
Wherein the continuous glass fiber is alkali-free glass fiber with the number of 600 Tex-800 Tex. Most of the existing glass fibers are medium-alkali glass fibers, the alkali-free glass fibers are prepared by carrying out acid treatment on the basis of the existing medium-alkali glass fibers, and the alkali-free glass fibers have better tensile property than common glass fibers. The 600 Tex-800 Tex alkali-free glass fiber has high strength and ultrahigh cost performance, and is very suitable for being used as a component material of the core-spun yarn inner core. The copper wire can be selected from brass wire with cross section diameter of 0.12mm or 0.15 mm. The two brass wires can form a better fit with the continuous glass fiber.
Claims (6)
1. A process for blending core-spun yarns by using chopped glass fibers is characterized in that organic fibers or inorganic fibers are blended by a wool making machine to prepare a blended material, the blended material is fed into a sliver discharging machine to be stripped, then the blended yarn is formed by drawing, the blended yarn and the chopped glass fibers are simultaneously fed into a feed inlet of an air friction spinning machine by a special closed feeding machine according to a preset speed, the blended yarn and the chopped glass fibers are uniformly wound on continuous glass fibers and copper wires by the air friction spinning machine, and the chopped glass fibers are cut by a cutting machine from waste glass fibers through glass fibers.
2. A process for blending core-spun yarns with chopped glass fibers according to claim 1, wherein the waste glass fibers are screened before being cut by a glass fiber cutter.
3. A process for blending core-spun yarns with chopped glass fibers as claimed in claim 1, wherein the blending ratio of said blended yarn to chopped glass fibers is 1:3 parts by weight.
4. A process for blending a core-spun yarn with chopped glass fibers as defined in claim 1, wherein the chopped glass fibers and the blended yarn are fed to an air-friction spinning machine at a rate of 1.5 m/s.
5. The process for blending core-spun yarns with chopped glass fibers according to claim 1, wherein the continuous glass fibers are alkali-free glass fibers with the number of 600 Tex-800 Tex.
6. A process for blending a core-spun yarn with chopped glass fibers according to claim 1, wherein said copper wires are one of brass wires having a cross-sectional diameter of 0.12mm or a cross-sectional diameter of 0.15 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011468686.9A CN112442774A (en) | 2020-12-14 | 2020-12-14 | Technology for blending core-spun yarn by using chopped glass fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011468686.9A CN112442774A (en) | 2020-12-14 | 2020-12-14 | Technology for blending core-spun yarn by using chopped glass fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112442774A true CN112442774A (en) | 2021-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011468686.9A Pending CN112442774A (en) | 2020-12-14 | 2020-12-14 | Technology for blending core-spun yarn by using chopped glass fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112442774A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85105858A (en) * | 1984-11-29 | 1986-05-10 | 博格-华纳公司 | The friction element that does not contain asbestos |
| EP0837165A2 (en) * | 1996-10-16 | 1998-04-22 | Asglawo Gesellschaft mit beschränkter Haftung - Stoffe zum Dämmen und Verstärken | Method for making a heat resistant yarn |
| CN1455127A (en) * | 2002-04-29 | 2003-11-12 | 东台市华阳玻纤有限责任公司 | Asbest-free friction material reinforced base material and manufacturing process thereof |
| CN1523075A (en) * | 2003-02-21 | 2004-08-25 | 湖北省纺织工业科学研究所 | Friction composite material for vehicle |
| CN201827277U (en) * | 2010-07-20 | 2011-05-11 | 来安县隆华摩擦材料有限公司 | Reinforced substrate for asbestos-free friction material |
| CN201962240U (en) * | 2011-02-23 | 2011-09-07 | 东台市华源复合材料有限公司 | No asbestos braking material reinforcing temperature resistant substrate |
| CN103849968A (en) * | 2014-02-21 | 2014-06-11 | 盐城工学院 | Carbon fiber composite line for automobile clutch surface patch, preparation method and application thereof |
| CN207047454U (en) * | 2017-05-12 | 2018-02-27 | 丰照 | A kind of glass fiber flame retardant wrap yarn |
| CN109234879A (en) * | 2018-11-09 | 2019-01-18 | 东台市华阳玻纤有限责任公司 | A kind of Ya Geli yarn applied to sealing material braiding packing |
| CN109234880A (en) * | 2018-11-09 | 2019-01-18 | 东台市华阳玻纤有限责任公司 | A kind of blended covering yarn of resurrection glass fibre applied to ship brake ribbon |
| CN111270380A (en) * | 2020-04-27 | 2020-06-12 | 盐城工业职业技术学院 | Production method of flame-retardant high-temperature-resistant pre-oxidized silk aramid blended yarn |
-
2020
- 2020-12-14 CN CN202011468686.9A patent/CN112442774A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85105858A (en) * | 1984-11-29 | 1986-05-10 | 博格-华纳公司 | The friction element that does not contain asbestos |
| EP0837165A2 (en) * | 1996-10-16 | 1998-04-22 | Asglawo Gesellschaft mit beschränkter Haftung - Stoffe zum Dämmen und Verstärken | Method for making a heat resistant yarn |
| CN1455127A (en) * | 2002-04-29 | 2003-11-12 | 东台市华阳玻纤有限责任公司 | Asbest-free friction material reinforced base material and manufacturing process thereof |
| CN1523075A (en) * | 2003-02-21 | 2004-08-25 | 湖北省纺织工业科学研究所 | Friction composite material for vehicle |
| CN201827277U (en) * | 2010-07-20 | 2011-05-11 | 来安县隆华摩擦材料有限公司 | Reinforced substrate for asbestos-free friction material |
| CN201962240U (en) * | 2011-02-23 | 2011-09-07 | 东台市华源复合材料有限公司 | No asbestos braking material reinforcing temperature resistant substrate |
| CN103849968A (en) * | 2014-02-21 | 2014-06-11 | 盐城工学院 | Carbon fiber composite line for automobile clutch surface patch, preparation method and application thereof |
| CN207047454U (en) * | 2017-05-12 | 2018-02-27 | 丰照 | A kind of glass fiber flame retardant wrap yarn |
| CN109234879A (en) * | 2018-11-09 | 2019-01-18 | 东台市华阳玻纤有限责任公司 | A kind of Ya Geli yarn applied to sealing material braiding packing |
| CN109234880A (en) * | 2018-11-09 | 2019-01-18 | 东台市华阳玻纤有限责任公司 | A kind of blended covering yarn of resurrection glass fibre applied to ship brake ribbon |
| CN111270380A (en) * | 2020-04-27 | 2020-06-12 | 盐城工业职业技术学院 | Production method of flame-retardant high-temperature-resistant pre-oxidized silk aramid blended yarn |
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Application publication date: 20210305 |
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