阅读说明：本技术 一种阻燃、抗熔滴型的中高密度纤维 (Flame-retardant and anti-dripping medium-high density fiber ) 是由 林景 于 2020-12-31 设计创作，主要内容包括：本发明属于纤维结构技术领域,尤其涉及一种阻燃、抗熔滴型的中高密度纤维。本发明通过从内到外依次复合碳纤维芯线、内侧中空棉纤维、纤维粘结剂层、外侧中空棉纤维以及阻燃层的方式,制得阻燃、抗熔滴效果好,密度相对较高的高强度复合纤维。本发明中采用管状电热丝加热器来对纤维粘结剂层和阻燃层进行加热固化,其结构包括底板、立柱、固定环单元、活动管单元以及电热丝管单元,其具有加热、保温结构简单有效,加热、保温起始位置、即起始时刻灵活可调,加热强度灵活可调,整体结构稳定性高,以及整体调节使用、拆装维修操作方便高效的优点。(The invention belongs to the technical field of fiber structures, and particularly relates to a flame-retardant and anti-dripping medium and high density fiber. According to the invention, the high-strength composite fiber with good flame-retardant and anti-dripping effects and relatively high density is prepared by sequentially compounding the carbon fiber core wire, the inner hollow cotton fiber, the fiber binder layer, the outer hollow cotton fiber and the flame-retardant layer from inside to outside. The fiber binder layer and the flame-retardant layer are heated and cured by adopting the tubular electric heating wire heater, the structure of the fiber binder layer and the flame-retardant layer comprises the bottom plate, the upright post, the fixing ring unit, the movable pipe unit and the electric heating wire pipe unit, and the fiber binder layer and the flame-retardant layer have the advantages of simple and effective heating and heat preservation structure, flexible and adjustable heating and heat preservation initial positions, namely initial moments, flexible and adjustable heating strength, high stability of the whole structure, convenient and efficient integral adjustment, use, disassembly, assembly and maintenance.)

1. The flame-retardant and anti-dripping medium and high-density fiber is characterized by sequentially comprising the following components from inside to outside: the fiber-reinforced composite material comprises a carbon fiber core wire (11), an inner hollow cotton fiber (12), a fiber binder layer (13), an outer hollow cotton fiber (14) and a flame retardant layer (15).

2. A fire retardant, anti-drip, medium and high density fiber according to claim 1, wherein: the fiber binder layer (13) is formed by heating and curing a composite binder, wherein the composite binder comprises epoxy resin, polyamide resin, acetone, sodium carboxymethyl cellulose and dibutyl phthalate.

3. A fire retardant, anti-drip, medium and high density fiber according to claim 1, wherein: the flame-retardant layer (15) is formed by heating and curing a composite flame retardant, wherein the composite flame retardant comprises polyurethane resin, bentonite, sodium bicarbonate, ammonium polyphosphate and nano titanium oxide powder.

4. A fire retardant, anti-drip, medium and high density fiber according to claim 1, wherein: the fiber adhesive layer (13) and the flame-retardant layer (15) are heated and insulated by a tubular electric heating wire heater, the heating temperature of the fiber adhesive layer (13) is 45-65 ℃, and the heating temperature of the flame-retardant layer (15) is 85-92 ℃.

5. A fire retardant, anti-drip, middle and high density fiber according to claim 4, wherein: the structure of tubulose heating wire heater includes bottom plate (1), and stand (2) sets up stand (2) upper end position department and be used for through treating solid fixed ring unit (3) of heating fibre, peg graft and set up gu fixed ring unit (3) go up and horizontal position is adjustable and be used for through treating the fibrous activity pipe unit (4) of heating, and the cover is in activity pipe unit (4) outside and horizontal position adjustable electric heating wire pipe unit (5).

6. A fire retardant, anti-drip, middle and high density fiber according to claim 5, wherein: the fixing ring unit (3) comprises a vertical circular ring (301) and a fixing plate (302) which is arranged on the annular side surface of the vertical circular ring (301) and has a sector-ring-shaped vertical section; the movable pipe unit (4) comprises a transverse pipe body (401), an axial through-hole (402) which is arranged on the transverse pipe body (401) and has a vertical section in a fan-ring shape and is used for being inserted into the fixing plate (302), and radial heating ports (403) which are arranged on the axial through-hole (402) and are used for penetrating through the inner side and the outer side of the transverse pipe body (401).

7. A fire retardant, anti-drip, middle and high density fiber according to claim 6, wherein: the length of the radial heating port (403) is smaller than that of the axial through-hole (402), the radial heating port (403) is arranged at the position of the same side of the axial through-hole (402) in the circumferential direction, the movable pipe unit (4) further comprises a rotating plate part (404) which is inserted into the axial through-hole (402) and used for adjusting the opening area of the radial heating port (403), and a pipe body threaded section (405) which is arranged on the outer annular surface of the transverse pipe body (401), is far away from one side of the fixing ring unit (3) and is used for installing the electric heating wire pipe unit (5).

8. A fire retardant, anti-drip, middle and high density fiber according to claim 7, wherein: the rotating plate part (404) comprises a rotating plate main body (404 a) which is arranged on the axial through-hole (402), has a sector-shaped vertical cross section and a circumferential length smaller than that of the axial through-hole (402), and a rotating holding block (404 b) which is arranged at the exposed end of the rotating plate main body (404 a) far away from the fixed ring unit (3).

9. A fire retardant, anti-drip, middle and high density fiber according to claim 7, wherein: the electric heating wire tube unit (5) comprises an internal thread ring (501) arranged on the tube body thread section (405), a protruding ring (502) arranged on the side surface of the internal thread ring (501), an outer tube body (503) sleeved on the outer side of the transverse tube body (401), an annular groove (504) arranged on the annular side surface of the outer tube body (503) and used for being inserted into the protruding ring (502), two electric heating wire mounting and fixing holes (505) respectively arranged on the two ends of the outer tube body (503), and spiral electric heating wires (506) with two ends respectively fixed on the two electric heating wire mounting and fixing holes (505) and sleeved between the transverse tube body (401) and the outer tube body (503) and used for transmitting heat into the radial heating port (403) for curing.

10. A fire retardant, anti-drip, mid-high density fiber according to claim 9, wherein: the electric heating wire tube unit (5) further comprises two elastic rings (507) which are respectively arranged on the inner and outer annular side surfaces of the annular groove (504) and are used for clamping the protruding ring (502).

Technical Field

The invention belongs to the technical field of fiber structures, and particularly relates to a flame-retardant and anti-dripping medium and high density fiber.

Background

Generally, natural fibers have good anti-dripping capability, while artificial fibers have poor anti-dripping performance, for example, natural cotton fibers have outstanding anti-dripping effect because the internal structure of the natural cotton fibers is very stable and is coked before molten drops are generated, so that the cotton fibers cannot generate high-temperature fiber molten drops adhered to the skin during combustion, which is very safe and necessary.

On the other hand, single cotton fiber has the problems of poor flame retardant effect, low self density and limited use environment, so that a composite cotton fiber with flame retardant and high density is urgently needed in the market.

In addition, in the existing production process of the composite fiber, a composite fiber coating layer heating device with flexibly adjustable heat preservation time nodes and heating time nodes is lacked, and the complex and variable heat preservation and heating operation requirements cannot be met.

The patent publication number is CN 205999521U, and the china utility model patent that the announcement day is 2017.03.08 discloses an inorganic nanometer flame retardant composite fiber, and it includes the PET fibre body, the cross-section of PET fibre body is circular, PET fibre body center is provided with the cavity, the cross-section of cavity is the pentagram, evenly be provided with a plurality of inorganic nanometer flame retardant particles outside the cavity, PET fibre body surface evenly is provided with a plurality of bars protrudingly, the bellied cross-section of bar is triangle-shaped, PET fibre body is provided with the fire retardant layer outward, be provided with the protective layer outside the fire retardant layer.

However, the composite fiber in the utility model has the problem that the flame-retardant layer is easy to fall off.

The patent publication number is CN 212115712U, and the china utility model patent that announces day 2020.12.08 discloses a carbon fiber heating pipe with protection device, including two carbon fiber heating pipe bodies, two the outside of carbon fiber heating pipe body all is equipped with heat conduction sleeve pipe, two be connected with a plurality of radiating fin between the heat conduction sleeve pipe, the both ends of carbon fiber heating pipe body all are provided with the fixation clamp, the round hole has been seted up to the bottom of fixation clamp.

But the heating pipe in the utility model has the problem that heating and heat preservation operations are not convenient enough.

Disclosure of Invention

The invention provides a flame-retardant and anti-dripping type medium-high density fiber, which can be used for preparing a high-strength composite fiber with good flame-retardant and anti-dripping effects and relatively high density by compounding a carbon fiber core wire, an inner side hollow cotton fiber, a fiber binder layer, an outer side hollow cotton fiber and a flame-retardant layer in sequence from inside to outside.

The fiber binder layer and the flame-retardant layer are heated and cured by adopting the tubular electric heating wire heater, the structure of the fiber binder layer and the flame-retardant layer comprises the bottom plate, the upright post, the fixing ring unit, the movable pipe unit and the electric heating wire pipe unit, and the fiber binder layer and the flame-retardant layer have the advantages of simple and effective heating and heat preservation structure, flexible and adjustable heating and heat preservation initial positions, namely initial moments, flexible and adjustable heating strength, high stability of the whole structure, convenient and efficient integral adjustment, use, disassembly, assembly and maintenance.

The technical scheme adopted by the invention for solving the problems is as follows: a flame-retardant and anti-dripping medium-high density fiber sequentially comprises the following components from inside to outside: the fiber core comprises a carbon fiber core wire, an inner side hollow cotton fiber, a fiber binder layer, an outer side hollow cotton fiber and a flame retardant layer.

The further preferred technical scheme is as follows: the fiber binder layer is formed by heating and curing a composite binder, wherein the composite binder comprises epoxy resin, polyamide resin, acetone, sodium carboxymethyl cellulose and dibutyl phthalate.

The further preferred technical scheme is as follows: the flame-retardant layer is formed by heating and curing a composite flame retardant, and the composite flame retardant comprises polyurethane resin, bentonite, sodium bicarbonate, ammonium polyphosphate and nano titanium oxide powder.

The further preferred technical scheme is as follows: the fiber binder layer and the flame-retardant layer are heated and insulated by a tubular electric heating wire heater, the heating temperature of the fiber binder layer is 45-65 ℃, and the heating temperature of the flame-retardant layer is 85-92 ℃.

The further preferred technical scheme is as follows: the tubular electric heating wire heater structurally comprises a bottom plate, a stand column, a fixing ring unit and a movable pipe unit, wherein the fixing ring unit is arranged at the upper end of the stand column and used for passing through fibers to be heated, the fixing ring unit is inserted into the fixing ring unit, the transverse position of the fixing ring unit is adjustable, the movable pipe unit is used for passing through the fibers to be heated, and the movable pipe unit is sleeved with the electric heating wire pipe unit, the outer side of the movable pipe unit is adjustable.

The further preferred technical scheme is as follows: the fixing ring unit comprises a vertical circular ring and a fixing plate which is arranged on the annular side surface of the vertical circular ring and has a sector-ring-shaped vertical cross section; the movable pipe unit comprises a transverse pipe body, an axial through-hole channel and radial heating ports, wherein the transverse pipe body is arranged on the transverse pipe body, the vertical cross section of the axial through-hole channel is in a fan ring shape and is used for being inserted into the fixing plate, and the radial heating ports are arranged on the axial through-hole channel and are used for penetrating through the inner side and the outer side of the transverse pipe body.

The further preferred technical scheme is as follows: the length of the radial heating port is smaller than that of the axial through-hole, the radial heating port is arranged at the position of the same side of the axial through-hole in the circumferential direction, the movable pipe unit further comprises a rotating plate part which is inserted into the axial through-hole and used for adjusting the opening area of the radial heating port, and a pipe body thread section which is arranged on the outer ring surface of the transverse pipe body, is far away from one side of the fixed ring unit and is used for installing the electric heating wire pipe unit.

The further preferred technical scheme is as follows: the rotary plate part comprises a rotary plate main body and a rotary holding block, wherein the rotary plate main body is arranged on the axial through hole, the vertical cross section of the rotary plate main body is in a sector ring shape, and the circumferential length of the rotary plate main body is smaller than the circumferential length of the axial through hole, and the rotary holding block is arranged on one side, far away from the fixed ring unit, of the rotary plate main body and is exposed out of the rotary holding block.

The further preferred technical scheme is as follows: the heating wire tube unit comprises an internal thread ring arranged on the thread section of the tube body, a protruding ring arranged on the side surface of the internal thread ring, an outer tube body sleeved on the outer side of the transverse tube body, an annular groove arranged on the annular side surface of the outer tube body and used for being inserted into the protruding ring, two heating wire mounting and fixing holes arranged at two ends of the outer tube body, and spiral heating wires with two ends fixed at two ends of the heating wire mounting and fixing holes and sleeved on the transverse tube body and between the outer tube body and used for transmitting heat in the radial heating port for curing.

The further preferred technical scheme is as follows: the electric heating wire tube unit also comprises two elastic rings which are respectively arranged on the inner annular side surface and the outer annular side surface of the annular groove and are used for clamping the protruding ring.

According to the invention, the high-strength composite fiber with good flame-retardant and anti-dripping effects and relatively high density is prepared by sequentially compounding the carbon fiber core wire, the inner hollow cotton fiber, the fiber binder layer, the outer hollow cotton fiber and the flame-retardant layer from inside to outside.

The fiber binder layer and the flame-retardant layer are heated and cured by adopting the tubular electric heating wire heater, the structure of the fiber binder layer and the flame-retardant layer comprises the bottom plate, the upright post, the fixing ring unit, the movable pipe unit and the electric heating wire pipe unit, and the fiber binder layer and the flame-retardant layer have the advantages of simple and effective heating and heat preservation structure, flexible and adjustable heating and heat preservation initial positions, namely initial moments, flexible and adjustable heating strength, high stability of the whole structure, convenient and efficient integral adjustment, use, disassembly, assembly and maintenance.

Drawings

FIG. 1 is a schematic cross-sectional view of a flame-retardant, anti-dripping, middle-high density fiber according to the present invention.

Fig. 2 is a schematic structural view of a tubular heating wire heater according to the present invention in a front view.

FIG. 3 is a schematic side view of the fixing ring unit of the present invention.

FIG. 4 is a schematic view of the rotating plate body in the axial through-channel of the present invention.

FIG. 5 is a schematic view of the position structure of the axial through-channel of the present invention.

FIG. 6 is a schematic view of the position structure of the electric heating wire tube unit according to the present invention.

FIG. 7 is a schematic diagram of the position structure of the annular groove in side view.

Detailed Description

The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Example (b): as shown in fig. 1, 2, 3, 4, 5, 6 and 7, a medium-high density fiber of a flame retardant and anti-dripping type comprises, from inside to outside: a carbon fiber core wire 11, an inner hollow cotton fiber 12, a fiber binder layer 13, an outer hollow cotton fiber 14 and a flame retardant layer 15.

In this embodiment, carbon fiber core 11 is used for the density of the final composite fiber product of suitable increase, inboard hollow cotton fiber 12 adds outside hollow cotton fiber 14, accounts for the great proportion of composite fiber product, consequently guarantees basic anti-molten drop effect, and last flame retardant coating 15 then guarantees outside flame retardant efficiency, wherein fibre binder layer 13 then is used for the cotton fiber of fixed its inside and outside both sides of bonding, guarantees whole composite fiber's wholeness, avoids composite fiber just to take place inside to drop, not hard up problem in using the short time.

The fiber adhesive layer 13 is formed by heating and curing a composite adhesive, which includes epoxy resin, polyamide resin, acetone, sodium carboxymethyl cellulose, and dibutyl phthalate. The flame-retardant layer 15 is formed by heating and curing a composite flame retardant, wherein the composite flame retardant comprises polyurethane resin, bentonite, sodium bicarbonate, ammonium polyphosphate and nano titanium oxide powder.

In this embodiment, the fiber adhesive layer 13 and the flame retardant layer 15 are prepared by compounding according to the above formula in the prior art, and all operations before curing are completed by coating according to the prior art, so as to ensure the effectiveness of the whole preparation process of the composite fiber product.

The fiber binder layer 13 and the flame-retardant layer 15 are heated and insulated by a tubular electric heating wire heater, the heating temperature of the fiber binder layer 13 is 45-65 ℃, and the heating temperature of the flame-retardant layer 15 is 85-92 ℃.

In this embodiment, in the curing and forming process of the flame retardant layer 15, the high temperature resistance of the flame retardant layer is greater than that of the fiber binder layer 13, so two specific heating and curing temperatures are adopted, and it can be finally ensured that the fiber binder layer 13 and the flame retardant layer 15 are sufficiently cured and the overall heating and curing efficiency is high.

The structure of tubulose heating wire heater includes bottom plate 1, stand 2, sets up 2 upper end position departments of stand are used for solid fixed ring unit 3 through waiting to heat the fibre, and the grafting setting is in gu fixed ring unit 3 is gone up and horizontal position is adjustable and be used for through waiting to heat fibrous movable tube unit 4, and the cover is in movable tube unit 4 outside and horizontal position adjustable heating wire tube unit 5.

In this embodiment, the fiber to be cured can pass in and out from the fixing ring unit 3, the position of the movable tube unit 4 can be adjusted transversely compared with the fixing ring unit 3, so that the start and end time of the heat-insulating operation of the fiber to be cured can be adjusted, and the position of the electric heating wire tube unit 5 can be adjusted transversely compared with the movable tube unit 4, so that the start and end time of the heating operation of the fiber to be cured can be flexibly selected, and the tubular electric heating wire heater has the advantages of flexibility and high efficiency in heating and heat-insulating operations.

The fixing ring unit 3 comprises a vertical circular ring 301 and a fixing plate 302 which is arranged on the annular side surface of the vertical circular ring 301 and has a sector-ring-shaped vertical cross section; the movable tube unit 4 includes a horizontal tube 401, an axial through-hole 402 provided in the horizontal tube 401 and having a vertical cross-sectional shape of a sector ring and inserted into the fixing plate 302, and a radial heating port 403 provided in the axial through-hole 402 and penetrating through the inner and outer sides of the horizontal tube 401. The length of the radial heating port 403 is smaller than that of the axial through-channel 402, the radial heating port 403 is disposed at the same side position in the circumferential direction of the axial through-channel 402, the movable tube unit 4 further includes a rotating plate portion 404 inserted into the axial through-channel 402 and used for adjusting the opening area of the radial heating port 403, and a tube body thread portion 405 disposed on the outer ring surface of the transverse tube body 401 and far away from the fixed ring unit 3 and used for mounting the electric heating wire tube unit 5. The rotating plate portion 404 includes a rotating plate main body 404a that is provided on the axial through-hole 402, has a fan-shaped vertical cross-sectional shape, and has a circumferential length smaller than the circumferential length of the axial through-hole 402, and a rotating grip piece 404b that is provided on an exposed end of the rotating plate main body 404a on a side away from the fixing ring unit 3.

In this embodiment, the axial through-channels 402 serve two purposes: firstly, the fixing plate 302 can be inserted and pulled out on the axial through-channel 402, so that the position of the transverse pipe body 401 is adjustable compared with the fixed fixing plate 302 and compared with the fiber to be solidified; secondly, the rotating plate main body 404a can rotate on the axial through-channel 402 and can be plugged into or pulled out of the axial through-channel 402, so that the actual opening area of the radial heating port 403 is adjustable, and the heating intensity of the fiber to be cured can be changed without adjusting the electric heating wire tube unit 5, which is very convenient and efficient.

The electric heating wire tube unit 5 includes an internal thread ring 501 disposed on the tube body thread section 405, a protruding ring 502 disposed on the side of the internal thread ring 501, an outer tube body 503 sleeved outside the transverse tube body 401, an annular groove 504 disposed on the annular side of the outer tube body 503 and used for inserting the protruding ring 502, two heating wire installation fixing holes 505 disposed at two ends of the outer tube body 503, and a spiral heating wire 506 for curing, both ends of which are fixed on the two heating wire installation fixing holes 505 respectively and sleeved between the transverse tube body 401 and the outer tube body 503 and used for transferring heat into the radial heating port 403. The electric wire tube unit 5 further includes two elastic rings 507 which are respectively provided on the inner and outer annular side surfaces of the annular groove 504 and which are used to clamp the projecting ring 502.

In this embodiment, the internal thread ring 501 can be rotated on the threaded section 405 of the tube body to adjust the lateral position, so that finally, the position of the spiral heating wire 506 for curing is flexibly adjustable compared with the position of the fiber to be cured, the start and stop time of heating the fiber to be cured can be adjusted, and different heating and curing requirements can be met.

The radial heating port 403 is used for directly transferring heat into the curing spiral heating wire 506, and the transverse pipe body 401 can also conduct heat, so that the effective heating effect of the fiber to be cured is finally ensured.

In addition, the heating wire fixing holes 505 are used to fix both ends of the spiral heating wire 506 for curing, so as to prevent the spiral heating wire 506 for curing from accidentally contacting the horizontal tube 401 or the outer tube 503, and the protruding ring 502 is inserted into the annular groove 504, so as to ensure that the outer tube 503 can only be adjusted by sliding in the horizontal direction when the internal thread ring 501 is adjusted by rotation.

Finally, the positions of the transverse pipe body 401 and the spiral heating wire 506 for curing are flexibly adjustable, so that the fiber binder layer 13 and the flame-retardant layer 15 can be selectively adjusted to an optimum curing mode, and the curing uniformity and the curing completeness of the two-layer structure on the final composite fiber are ensured.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various modifications can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. These are non-inventive modifications, which are intended to be protected by patent laws within the scope of the claims appended hereto.