CN201850336U

CN201850336U - Horn-shaped efficient electrostatic spinning spray head

Info

Publication number: CN201850336U
Application number: CN2010206219310U
Authority: CN
Inventors: 刘勇; 王欣; 丁玉梅; 杨卫民
Original assignee: Beijing University of Chemical Technology
Current assignee: Beijing University of Chemical Technology
Priority date: 2010-11-22
Filing date: 2010-11-22
Publication date: 2011-06-01
Anticipated expiration: 2020-11-22

Abstract

The utility model discloses a horn-shaped efficient electrostatic spinning spray head, which can be used for carrying out the electrostatic spinning of polymer melt or solution containing solid powder. The horn-shaped efficient electrostatic spinning spray head comprises two parts: a horn-shaped spray hole and a cylindrical internal embedding element, wherein a heating ring is covered on the outer wall of the horn-shaped spray hole, a matching part of the cylindrical internal embedding element and a cylindrical hole of an inner hole of the horn-shaped spray hole is cut into several equant planes, and the spinning solution or melt flows to the inner wall surface of a circular arc hole from a gap between the cylindrical hole of the inner hole of the horn-shaped spray hole and each plane. When the solution or melt is uniformly distributed on the circumference of the bottom end of the horn-shaped spray hole, and after an electrostatic field is added, various strands of jet streams can be formed at the circumference of the bottom end. The utility model has the advantages that the difficulty of electrostatic spinning with solid powder is greatly reduced, and in addition, the solid powder is uniformly dispersed in the spinning fiber.

Description

A kind of horn-like high efficiency electrostatic spinning nozzle

Technical field

The utility model relates to a kind of electrostatic spinning nozzle device, belongs to the electrostatic spinning field.

Background technology

Many countries and regions are occupied in the research that method of electrostatic spinning prepares nanofiber, the fiber finer that the fiber that makes with method of electrostatic spinning makes than traditional composite spinning many, diameter generally can reach tens nanometers between several microns, minimum diameter can reach 1nm.Along with the continuous development of nanometer technology in recent years, electrostatic spinning has become the important method of preparation nanofiber and has received much concern.Method of electrostatic spinning is widely used, from industrial synthetic polymer to cellulose, various raw materials such as ossein, protein, dna complex can both carry out spinning, and can in spinning process, add antibiotics, nano particle etc., prepare various functional fibers.

Functional nanomaterials can make have antibiotic, antiultraviolet, materials with function such as far infrared, conduction, fire-retardant, radiation proof, in order to prepare the functional textile that contains nano material, generally be before spinning, nano-powder to be added in spinning solution or the melt.At present, functional nano powder fiber preparation method is mainly melt spinning process, has possessed comparatively ripe production technology.The superfine fibre of melt electrostatic spinning method preparation has characteristics such as specific area is big, porosity height, can make the functional nano particle in the fiber bring into play its effect preferably.

Present method of electrostatic spinning is simple, easy to operate, but following shortcoming is arranged: the first, and electrostatic spinning is difficult to obtain nanofiber long filament or staple fibre separated from one another; Second, traditional carries out electrostatic spinning with capillary, internal diameter capillaceous is generally 0.05-0.2mm, it is very difficult processing this superfine little micropore on the one hand, on the other hand, if add the additive of solid powdery in solution or melt, phenomenon of blocking can appear in capillary, influences carrying out continuously of electrostatic spinning.

The utility model content

A kind of horn-like high efficiency electrostatic spinning nozzle that the utility model proposes, this spinning nozzle can contain the polymer melt or the solution electrostatic spinning of additive such as pressed powder, and it is convenient to clean, and are difficult for stopping up.And can coat heating collar at the shower nozzle outer wall, make melt still be in than higher temperature at the shower nozzle place, good fluidity is laid a good foundation for making nano-scale fiber.

The utility model provides a kind of horn-like high efficiency electrostatic spinning nozzle, can contain the polymer melt of pressed powder or the electrostatic spinning of solution, it comprises horn-like spray orifice and cylinder embedded component two parts, horn-like spray orifice comprises cylindrical hole of the first half and the latter half circular hole tangent with the first half, the outer wall of whole horn-like spray orifice is coated with heating collar, the cylindrical hole mating part of cylinder embedded component and horn-like spray orifice endoporus cuts out the plane of several five equilibriums, cut-out does not cooperate with the cylindrical hole of horn-like spray orifice endoporus, spinning solution or melt evenly flow to the circular hole internal face from the gap of the cylindrical hole of each plane and spray orifice endoporus, when the bottom of spray orifice circumference is evenly distributed with solution or melt, after adding electrostatic field, will form the injection stream of multiply at the bottom circumference.

A kind of horn-like solution or the melt electrostatic spinning shower nozzle that contains pressed powder that the utility model proposes, with traditional spinneret obvious difference is arranged, at first, it does not need to process micropore, secondly, the cylindrical hole of horn-like spray orifice the first half and the latter half circular hole are tangent, flow to the internal face of circular hole when melt or solution are flowed out from the fit clearance of spray orifice and cylinder embedded component better.The fit clearance of spray orifice and cylinder embedded component can not be too little, otherwise the solution or the melt that contain pressed powder stop up easily, can not be too big, otherwise spinning solution or melt-flow get too fast, can not form injection stream, suitable gap should be to make spinning solution or melt rest on the circumference of spray orifice bottom, and does not drip the general optional 0.8-1mm in gap.Moreover horn-like spray orifice outer wall can coat heating collar, makes solution or melt still be in than higher temperature at the shower nozzle place, and good fluidity is laid a good foundation for making nano-scale fiber.

Behind the uniform plane that the cylinder embedded component cuts out, spinning solution or melt flow out from the gap of each plane and spray orifice, because each uniform plane is distributed on the cylinder embedded component, and the circular hole internal face is the form that helps the annular groove of solution or melt second diffluence, so solution or melt can be evenly distributed on the circumference of bottom.The circular hole internal face also can be for there being the form of vertical stria of leaving, and spinning solution or melt advance melt or solution water conservancy diversion in the stria after flowing out from the gap of each plane and spray orifice.

Description of drawings

Fig. 1 is the assembling schematic diagram of a kind of horn-like high efficiency electrostatic spinning nozzle of the utility model.

Fig. 2 is the axonometric drawing of a kind of horn-like high efficiency electrostatic spinning nozzle cylinder embedded component of the utility model.

Fig. 3 is the vertical view of a kind of horn-like high efficiency electrostatic spinning nozzle cylinder embedded component of the utility model.

Among the figure: the 1-spray orifice; 2-cylinder embedded component; The 3-circular hole; 4-bottom circumference; The 5-plane; 6-cooperates curved surface; 7-multiply injection stream; The 8-annular groove; The 9-heating collar.

The specific embodiment

Below in conjunction with specific embodiment the utility model is further elaborated.

Embodiment 1

A kind of horn-like high efficiency electrostatic spinning nozzle that the utility model provides can contain the polymer melt or the solution electrostatic spinning of pressed powder, it comprises horn-like spray orifice 1 and cylinder embedded component 2 two parts, horn-like spray orifice 1 comprises cylindrical hole of the first half and the latter half circular hole 3 tangent with the first half, the outer wall of whole horn-like spray orifice is coated with heating collar 9, the cylindrical hole mating part of cylinder embedded component 2 and horn-like spray orifice 1 endoporus cuts out the plane 5 of several five equilibriums, cut-out 6 does not cooperate with the cylindrical hole of horn-like spray orifice 1 endoporus, spinning solution or melt flow to circular hole 3 internal faces from the gap of the cylindrical hole of each plane 5 and horn-like spray orifice 1 endoporus, because each plane 5 is evenly distributed on the cylinder embedded component 2, and circular hole 3 internal faces are the form that helps the annular groove 8 of solution or melt second diffluence, so spinning solution can evenly flow to the bottom of circular hole 3, solution or melt are evenly distributed on the bottom circumference 4.

When the bottom of horn-like spray orifice 1 circumference 4 is evenly distributed with solution or melt, add electrostatic field after, will form the injection stream 7 of multiply at bottom circumference 4.

Among Fig. 1 and Fig. 2, cylinder embedded component 2 is installed in the cylindrical hole of horn-like spray orifice 1 the first half.The internal diameter of horn-like spray orifice 1 is 10mm, cylinder embedded component 2 five equilibriums cut out 4 planes 5, horn-like spray orifice 1 is 1mm with the gap on plane 5, and the latter half circular hole 3 of horn-like spray orifice 1 is tangent with the first half cylindrical hole, and the diameter of the bottom circumference 4 of circular hole 3 is 14mm.Horn-like spray orifice 1 closely cooperates with mating surface 6.Fig. 1 shower nozzle is installed on solution or the melt spinning device, and spinning material is the PP6310 powder, and it and pressed powder are mixed in proportion, and adds barrel.When bottom circumference 4 is evenly distributed with the PP Composite Melt of fusing, add electrostatic field, multiply injection stream 7 evenly sprays along bottom circumference 4, spin fibre diameter between 1-20 μ m, solid particle is equably attached on the fiber.

Claims

1. horn-like high efficiency electrostatic spinning nozzle, it is characterized in that: it comprises horn-like spray orifice (1) and cylinder embedded component (2) two parts, horn-like spray orifice (1) comprises cylindrical hole of the first half and the latter half circular hole (3) tangent with the first half, embedded component (2) and horn-like spray orifice (1) endoporus mating part cut out the plane (5) of several five equilibriums, and cut-out (6) does not cooperate with horn-like spray orifice (1) endoporus.

2. a kind of horn-like high efficiency electrostatic spinning nozzle according to claim 1 is characterized in that: circular hole (3) internal face is smooth surface or the curved surface that has annular groove (8).

3. a kind of horn-like high efficiency electrostatic spinning nozzle according to claim 1 is characterized in that: coat heating collar (9) at horn-like spray orifice (1) outer wall.