CN112695454A - Preparation process of primary and regenerated carbon fiber felt - Google Patents
Preparation process of primary and regenerated carbon fiber felt Download PDFInfo
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- CN112695454A CN112695454A CN202110065459.XA CN202110065459A CN112695454A CN 112695454 A CN112695454 A CN 112695454A CN 202110065459 A CN202110065459 A CN 202110065459A CN 112695454 A CN112695454 A CN 112695454A
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- needling
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- needle
- carbon fiber
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention discloses a preparation process of primary and regenerated carbon fiber felts, which sequentially comprises the following steps: selecting raw materials, namely taking acrylic fiber, polyamide fiber, carbon fiber and pre-oxidized silk as raw materials; weighing the raw materials according to a certain proportion; cutting: cutting the raw material fiber; mixing: mixing the raw material fibers; opening: the weighed and mixed raw materials are subjected to primary unpacking of fibers through a bale opener, then conveyed to a pre-opener, conveyed to a cotton mixing machine and finally conveyed to a main opener; forming a net: the step of carding the web is carried out by adopting a single cylinder and a double-channel Frounet roller carding machine, and then a cross lapping machine is adopted for uniformly lapping the web; needle punching to form felt: the pre-needling pricker and the main needling pricker adopt Y-shaped needles, the needling depth of the pre-needling downward pricker is 9-11mm, the needling depth of the main needling downward pricker is 7-9mm, and the pre-needling pricker and the main needling downward pricker are needled into felts. According to the preparation process of the primary and regenerated carbon fiber felts, the fibers with different fineness and lengths are compounded by needling, so that the strength and the use times of the material are enhanced, and the material has the advantages of radiation resistance, high temperature resistance, flame retardance and the like.
Description
Technical Field
The invention relates to a preparation process of a carbon fiber felt, in particular to a preparation process of a primary and regenerated carbon fiber felt.
Background
The development and application of the environmental protection materials are more and more generally paid attention by countries in the world. After the 70 s in the 20 th century, the production and application of environment-friendly materials are generally regarded as important at home and abroad, and the energy consumption is greatly reduced, so that the environmental pollution and the greenhouse effect are reduced. The Chinese environmental protection material industry is developed at a high speed for nearly 20 years, products are from endless to diversified, the quality is from low to high, the varieties mainly comprising ceramic fibers, glass wool, calcium silicate heat insulation products and the like are formed, and the requirements on novel environmental protection materials are higher and higher along with the continuous improvement of the health and environmental protection concept of people.
However, most of the environment-friendly materials in the market not only have single functions, but also may bring hidden troubles to the health of people. For example, centrifugal glass wool, asbestos products, etc. applied to household appliances, contain the binder, inevitably generate carcinogenic substances in the heating process, and are harmful to the health of people.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to solve the defects in the prior art and provide a preparation process of a primary and regenerated carbon fiber felt, which strengthens the strength and the use times of a material by carrying out needle punching compounding on fibers with different fineness and length, and the material has the advantages of radiation resistance, high temperature resistance, flame retardance and the like.
The technical scheme is as follows: the invention relates to a preparation process of primary and regenerated carbon fiber felt, which comprises the following steps:
(1) selecting raw materials, namely taking acrylic fiber, polyamide fiber, carbon fiber and pre-oxidized silk as raw materials;
(2) weighing the raw materials according to a certain proportion;
(3) cutting: cutting the raw material fiber;
(4) mixing: mixing the raw material fibers;
(5) opening: the weighed and mixed raw materials are subjected to primary unpacking of fibers through a bale opener, then conveyed to a pre-opener, conveyed to a cotton mixing machine and finally conveyed to a main opener;
(6) forming a net: the step of carding the web is carried out by adopting a single cylinder and a double-channel Frounet roller carding machine, and then a cross lapping machine is adopted for uniformly lapping the web;
(7) needle punching to form felt: the pre-needling pricker and the main needling pricker adopt Y-shaped needles, the needling depth of the pre-needling downward pricker is 9-11mm, the needling depth of the main needling downward pricker is 7-9mm, and the pre-needling pricker and the main needling downward pricker are needled into felts.
Furthermore, the pre-oxidized fiber is polyacrylonitrile pre-oxidized fiber.
Further, the following raw materials are adopted in proportion by mass: 20-30 parts of acrylic fiber, 25-35 parts of nylon fiber, 30-50 parts of carbon fiber and 5-20 parts of pre-oxidized silk.
Further, the bale opener in the step (5) adopts a YYKB-110 bale opener; the pre-opener adopts a YYKS-150 opener; the cotton blending machine adopts a YYHM-220 type large-bin cotton blending machine; the main opener is YYKS-150 opener.
Further, the pre-pricking needle and the main pricking needle in the step (7) have the rigidity of HV635, and the needles are nitrided.
Furthermore, the cutting angles of the pre-pricking needle and the main pricking needle in the step (7) are arc-shaped, three tooth hooks are arranged on a single edge of a needle body of the pre-pricking needle, and two tooth hooks are arranged on a single edge of the needle body of the main pricking needle.
Further, the needle density of the needle planting machine in the needle punching process in the step (7) is 4000 needles/m2The output speed is 1.35m/min, and the acupuncture frequency is 346 needles/min; the needle density of the main needling machine is 7000 needles/m 2, the output speed is 1.35m/min, the needling frequency is 666 needles/min, and the needling density of the pre-needling machine is 102.5 needles/cm2The needling density of the main needling machine is 345.3 needles/cm2。
Has the advantages that: according to the primary and regenerated carbon fiber felt, the fibers with different fineness and lengths are compounded by needling, so that the strength and the use times of the material are enhanced; the functions are complete: radiation resistance, high temperature resistance, corrosion resistance, electrical insulation, shock absorption, sound absorption, noise reduction and the like; is non-toxic and safe: the carbon fiber mixed felt is formed by needling carbon fibers, does not contain any binder, and is safe and nontoxic; the performance is excellent: the superfine glass fiber has excellent characteristics of heat resistance, tensile strength, toughness, fire resistance, corrosion resistance, electrical insulation, flexibility and the like.
Detailed Description
The embodiments of the present invention will be described in detail below, and the embodiments described below by reference are exemplary only for explaining the present invention and are not to be construed as limiting the present invention.
The invention relates to a preparation process of primary and regenerated carbon fiber felt, which comprises the following steps:
(1) selecting raw materials, namely taking acrylic fiber, polyamide fiber, carbon fiber and pre-oxidized silk as raw materials;
(2) weighing the raw materials according to a certain proportion, specifically, 20-30 parts of acrylic fiber, 25-35 parts of nylon fiber, 30-50 parts of carbon fiber and 5-20 parts of pre-oxidized silk;
(3) cutting: cutting the raw material fiber;
(4) mixing: mixing the raw material fibers;
the uniformity of the opened good fiber web is poor, and the mechanical property of the high-end interior trim flame-retardant material is unstable; if the needling process configuration is not good, the needling needles can damage fibers, and finally, the tensile and wear-resistant properties of the prepared high-end vehicle interior flame-retardant material can not reach the maximum value under a specific process, and even the possibility of great reduction can be generated. The influence of the opening, mixing, carding and needling processes among the fibers on the performance of the final product is large, and the reasonable configuration among the processes is a necessary condition for the excellent performance of the high-end vehicle interior material.
In order to mix 4 raw materials according to a certain mixing ratio, 4 fibers are weighed before entering a cotton feeder, and an electronic weighing bale opener is used for supplying the raw materials according to a preset raw material mixing ratio.
(5) Opening: the weighed and mixed raw materials are subjected to primary unpacking of fibers through a bale opener, then conveyed to a pre-opener, conveyed to a cotton mixing machine and finally conveyed to a main opener;
the method comprises the steps of firstly, conducting fiber primary unpacking on raw materials through a YYKB-110 unpacking machine, conveying the raw materials to a YYKS-150 type pre-opener through a corner nail curtain, wherein in order to prevent the raw materials from falling hair and generating static electricity to be wound when the fibers are conveyed, feeding the raw materials to a flat curtain by adopting a leather curtain, and meanwhile, covering the surface of the corner nail curtain with a special butadiene-acrylonitrile rubber anti-static leather curtain to separate the raw materials from a wood curtain rod and prevent the fibers from being wound with the wood curtain rod, then conveying the raw materials to a YYHM-220 type large-bin cotton mixer through the pre-opener, further mixing 4 raw materials in a bin, and then feeding the raw materials to a YYKS-150 type main opener. The fiber opening selects step-by-step opening according to the fineness, type, performance and the like of the fiber, firstly the acrylic fiber and the polyamide fiber are opened and mixed, and then the acrylic fiber and the polyamide fiber are opened and mixed with the carbon fiber and the pre-oxidized silk. After opening and mixing, fibers of different grades and varieties can be uniformly mixed. The opening and mixing by the fractional step method is more delicate, and the mixing uniformity is better.
(6) Forming a net: the step of carding the web is carried out by adopting a single cylinder and a double-channel Frounet roller carding machine, and then a cross lapping machine is adopted for uniformly lapping the web;
after opening and mixing, the fiber raw material enters a carding process, the carding process is a key process of fiber web formation, the carding process of the fiber is carried out by adopting a YYSL-185 type single cylinder and a double-channel Froude roller type carding machine, the device is suitable for carding and web formation of 1.5D-20Dx25mm-76m chemical fibers, the single cylinder is carded at a high speed, the double-channel Froude cotton is more in output, the electric energy is reduced, and the yield is high. 4 rollers 090mm of YYSL-185 type carding machine are wrapped with metal card clothing, and are divided into an upper group and a lower group for matching, wherein a bearing seat and a transmission gear of the first pair of upper rollers are nylon pieces and have a metal detection function and a reversing and automatic stop alarm function, the diameter of a cylinder is 1230mm, the diameter of two rollers is 492mm, the diameter of a working roller is 155mm, the diameter of a wool stripping roller is 122mm, and the diameter of a licker-in roller is 295 mm. After the raw materials are subjected to carding and stripping actions of a cylinder, a working roll and a stripping roll, the initial raw materials are in a single fiber thin web state, the surface density of the raw materials is about 25g/m2 generally, and the fiber web required in the needling process generally needs further lapping to increase the thickness and the square meter gram weight.
The YYPW-300 type cross lapping machine is adopted, lapping of the lapping machine is repeatedly divided into six parts, the breaking speed is accurately controlled, and the unevenness of the fiber web is controlled to be the lowest. The number of the lapping layers is determined to be 10 according to the weight of 250g/m2 g and the requirement of uniform fiber web.
(7) Needle punching to form felt: the pre-needling pricker and the main needling pricker adopt Y-shaped needles, the needling depth of the pre-needling downward pricker is 9-11mm, the needling depth of the main needling downward pricker is 7-9mm, and the pre-needling pricker and the main needling downward pricker are needled into felts.
The different needling process parameters have great influence on the performance of the prepared non-woven material. The main needling process parameters influencing the product performance are firstly analyzed, and the needling process parameters are reasonably set according to different raw material performance indexes and the performance requirements of the product, so that the product with better performance is prepared.
Needle punching reinforcement is a typical mechanical reinforcement method, and the basic principle of needle punching reinforcement is that a metal needle with a triangular or other cross section and hook teeth on the edges is used for repeatedly punching fluffy fiber webs. When tens of thousands of felting needles penetrate into the fiber web, the teeth on the edges of the felting needles hook fibers on the upper surface layer and the lower surface layer and the inner layer of the fiber web, and the fibers hooked by the edges of the felting needles are changed in displacement along with the penetrating motion of the felting needles, namely, the hooked fibers perform penetrating motion in the section of the fiber web, so that the fibers are mutually interwoven and tangled in the motion process. The needle generates certain extrusion to the fiber web due to the friction force of the needle to the fiber web and the vertical displacement change of the fiber in the fiber web, so that the fiber web becomes thinner due to compression. The needle penetrates into the fiber web for a certain depth and then rises, the needle moves in the same direction, fibers in the groove of the needle are separated from the needle and are approximately vertically retained in the fiber web, and the fibers are nailed into the fiber web like a pin, so that the compressed fibers are not restored, and the fiber web is made into a composite material with a certain thickness and strength by the reciprocating motion of the needle.
Firstly, pricking a needle: the needles are the most important part of a needle machine, and the size and quality of the needles directly affect the appearance and quality of the nonwoven fabric, so the selection of the shape, size, material selection and manufacturing accuracy of the needles is particularly important. The rigidity of the pre-pricking needle and the rigidity of the main pricking needle are HV635, and the pricking needle is processed by helium permeation, so that the mechanical property is strong and tough, the pricking needle is wear-resistant, and the service life is long. Adopt Y type needle, this needle entrance angle is the arc, can avoid haring the fibre, and the fibre volume of tooth hook area is even simultaneously. Because the cutting groove is not deep, the felting needle is not easy to break, and the fabric structure, the appearance quality and the tensile strength are more uniform. The pre-pricking needle specification is 15x18x36x3R28-333YP3.2, and the main pricking needle specification is 15x28x36x3M24-222 Y.P3.2. As can be seen from the specifications of the pre-pricking needle and the main pricking needle, the single edge of the needle body of the pre-pricking needle hook has three tooth hooks, while the single edge of the needle body of the main pricking needle hook has two tooth hooks.
And secondly, the needling depth refers to the distance between the needle tip of the felting needle and the upper surface of the net supporting plate, namely the length of the felting needle extending out of the net after penetrating through the fiber net. When the selected felting needle is in a certain depth, the fibers driven by needling are large, and the effect of penetrating and tangling among the fibers is sufficient. However, the needling depth needs to be proper, and the excessive depth can cause great damage to the fibers and more breakage of the fibers, so that the strength of the fabric is reduced, and the needles are broken more at the same time. The square meter gram weight of the prepared interior decoration flame retardant material is 250g/m2, the needling depth of the downward needling is set to be 9-11mm by combining the analysis, the needling depth of the downward needling is set to be 7-9mm, and the needling depth of the upward needling is respectively reduced by 4mm.
Thirdly, the needling density refers to the number of needles in the dimensional net per unit area. The needle density is high, the strength of the fabric is also improved, if the needle density is too high, the needle is broken, and the product quality is influenced, the subject selects the needle density of a pre-needling machine 4000 needles/m 2, the output speed is 1.35m/min, and the needling frequency is 346 needles/min; the needle density of the main needling machine is 7000 needles/m 2, the output speed is 1.35m/min, and the needling frequency is 666 needles/min. The needling density of the pre-needling machine is 102.5 needles/cm 2, and the needling density of the main needling machine is 345.3 needles/cm 2.
According to the carbon fiber mixed felt, the fibers with different fineness and lengths are compounded by needling, so that the strength and the using times of the material are enhanced; the functions are complete: radiation resistance, high temperature resistance, corrosion resistance, electrical insulation, shock absorption, sound absorption, noise reduction and the like; is non-toxic and safe: the carbon fiber mixed felt is formed by needling carbon fibers, does not contain any binder, and is safe and nontoxic; the performance is excellent: the superfine glass fiber has excellent characteristics of heat resistance, tensile strength, toughness, fire resistance, corrosion resistance, electrical insulation, flexibility and the like.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A preparation process of primary and regenerated carbon fiber felt is characterized by comprising the following steps: the method comprises the following steps:
(1) selecting raw materials, namely taking acrylic fiber, polyamide fiber, carbon fiber and pre-oxidized silk as raw materials;
(2) weighing the raw materials according to a certain proportion;
(3) cutting: cutting the raw material fiber;
(4) mixing: mixing the raw material fibers;
(5) opening: the weighed and mixed raw materials are subjected to primary unpacking of fibers through a bale opener, then conveyed to a pre-opener, conveyed to a cotton mixing machine and finally conveyed to a main opener;
(6) forming a net: the step of carding the web is carried out by adopting a single cylinder and a double-channel Frounet roller carding machine, and then a cross lapping machine is adopted for uniformly lapping the web;
(7) needle punching to form felt: the pre-needling pricker and the main needling pricker adopt Y-shaped needles, the needling depth of the pre-needling downward pricker is 9-11mm, the needling depth of the main needling downward pricker is 7-9mm, and the pre-needling pricker and the main needling downward pricker are needled into felts.
2. The process of claim 1, wherein the at least one of the virgin and recycled carbon fiber mats comprises: the pre-oxidized fiber is polyacrylonitrile pre-oxidized fiber.
3. The process of claim 1, wherein the at least one of the virgin and recycled carbon fiber mats comprises: the raw materials in the following parts by mass are adopted in the proportion: 20-30 parts of acrylic fiber, 25-35 parts of nylon fiber, 30-50 parts of carbon fiber and 5-20 parts of pre-oxidized silk.
4. The process of claim 1, wherein the at least one of the virgin and recycled carbon fiber mats comprises: the bale opener in the step (5) adopts a YYYKB-110 bale opener; the pre-opener adopts a YYKS-150 opener; the cotton blending machine adopts a YYHM-220 type large-bin cotton blending machine; the main opener is YYKS-150 opener.
5. The process of claim 1, wherein the at least one of the virgin and recycled carbon fiber mats comprises: in the step (7), the rigidity of the pre-pricking needle and the rigidity of the main pricking needle are HV635, and the pricking needles are nitrided.
6. The process of claim 1, wherein the at least one of the virgin and recycled carbon fiber mats comprises: and (3) the cutting angles of the pre-pricking needle and the main pricking needle in the step (7) are arc-shaped, three tooth hooks are arranged on a single edge of a needle body of the pre-pricking needle, and two tooth hooks are arranged on a single edge of a needle body of the main pricking needle.
7. The process of claim 1, wherein the at least one of the virgin and recycled carbon fiber mats comprises: the needle density of the pre-needling machine in the needle punching process of the step (7) is 4000 needles/m2The output speed is 1.35m/min, and the acupuncture frequency is 346 needles/min; the needle density of the main needling machine is 7000 needles/m 2, the output speed is 1.35m/min, the needling frequency is 666 needles/min, and the needling density of the pre-needling machine is 102.5 needles/cm2The needling density of the main needling machine is 345.3 needles/cm2。
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110065459.XA CN112695454A (en) | 2021-01-19 | 2021-01-19 | Preparation process of primary and regenerated carbon fiber felt |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110065459.XA CN112695454A (en) | 2021-01-19 | 2021-01-19 | Preparation process of primary and regenerated carbon fiber felt |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114347625A (en) * | 2021-12-27 | 2022-04-15 | 嘉兴华丽非织布制品有限公司 | Preparation method of oil-water separation felt |
| CN114507940A (en) * | 2022-02-18 | 2022-05-17 | 山东大庚工程材料科技有限公司 | Multifunctional composite carbon fiber inner liner and preparation method thereof |
| CN115045013A (en) * | 2022-07-06 | 2022-09-13 | 青岛宏大纺织机械有限责任公司 | Blowing-carding-drawing blending production method and blowing-carding-drawing system |
-
2021
- 2021-01-19 CN CN202110065459.XA patent/CN112695454A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114347625A (en) * | 2021-12-27 | 2022-04-15 | 嘉兴华丽非织布制品有限公司 | Preparation method of oil-water separation felt |
| CN114507940A (en) * | 2022-02-18 | 2022-05-17 | 山东大庚工程材料科技有限公司 | Multifunctional composite carbon fiber inner liner and preparation method thereof |
| CN115045013A (en) * | 2022-07-06 | 2022-09-13 | 青岛宏大纺织机械有限责任公司 | Blowing-carding-drawing blending production method and blowing-carding-drawing system |
| CN115045013B (en) * | 2022-07-06 | 2023-09-22 | 青岛宏大纺织机械有限责任公司 | Blending production method of blowing-carding machine and blowing-carding machine |
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Application publication date: 20210423 |