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Durable carbon black conductive fiber and preparation method thereof

A conductive composite fiber, carbon black type technology, applied in conductive/antistatic filament manufacturing, fiber processing, filament/thread forming, etc., can solve the problems of increasing processing difficulty, reducing fiber functionality, and processing difficulty, etc. Achieve the effect of not easy to peel off, improve durability, and improve electrical conductivity

Active Publication Date: 2013-05-01
CTA HIGH TECH FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the conductive fibers of carbon black in the cortex have good electrical conductivity, but because the carbon black layer is completely exposed, it not only increases the difficulty of processing, but also has a greater risk of peeling off the carbon black layer due to later folding and kneading.
The carbon black in the core layer reduces the functionality of the fiber, making it difficult to enter high-variety purification occasions that require more stringent electrical conductivity.
Other cross-sectional shapes such as 3-point and 4-point varieties may be difficult to process or have insufficient electrical conductivity.

Method used

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  • Durable carbon black conductive fiber and preparation method thereof
  • Durable carbon black conductive fiber and preparation method thereof
  • Durable carbon black conductive fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A high-structure conductive carbon black powder accounting for 28% of the total weight of the functional layer with a particle size of 30-50nm and a specific resistance ≤ 10Ω·cm, and polybutylene terephthalate (PBT) accounting for 71.6% of the total weight of the functional layer and Dispersant, coupling agent, oxidizing agent, etc. are coated, dispersed, and mixed, and then twin-screw granulation is used to obtain component A; fiber-grade polyethylene terephthalate slices are used as component B; The components are added to the A and B feed bins of the compound spinning machine respectively, and then enter the dryer for drying. Component A can also be dried by vacuum drum and directly put into the component A dry slice silo.

[0043] After the A and B components are melted and extruded by the A and B screws respectively, the melts are extruded into the spinneret components by the A and B metering pumps at a ratio of 22%:78%, and the melts are compounded in the componen...

Embodiment 2

[0046] The preparation method of A component is the same as embodiment, only changes the proportioning of A component carbon black, and it accounts for 22% of functional layer gross weight, accounts for the polybutylene terephthalate (PBT) of functional layer gross weight 77.2%. ), all the other make A component with embodiment 1, and adopt the spinning process identical with embodiment, make such as Figure 7 Conductive composite fibers of cross-section shown.

[0047] The linear density of the conductive fiber is 23.4dtex / 3f, the breaking strength is 2.9cN / dtex, the breaking elongation is 61%, and the fiber resistance is 7.9×10 7 Ω / cm.

Embodiment 3

[0049] A high-structure conductive carbon black powder with a particle size of 30-50nm and a specific resistance ≤ 10Ω·cm, which accounts for 30% of the total weight of the functional layer, and polycaprolactam (PA6), which accounts for 69% of the total weight of the functional layer, and the corresponding dispersant, couple After coating, dispersing and mixing the coupling agent and oxygen-extracting agent, component A is obtained by twin-screw granulation; component B is made of fiber-grade polycaprolactam slices. The two components are respectively added to the bins A and B of the compound spinning machine, and then enter the dryer for drying. Component A can also be dried by vacuum drum and directly put into the component A dry slice silo.

[0050] After the A and B components are melted and extruded by the A and B screws respectively, the melts are extruded into the spinneret components by the A and B metering pumps at a ratio of 18%:82%, and the melts are compounded in t...

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Abstract

The invention provides durable carbon black conductive complex fiber and a manufacturing method thereof. The complex fiber comprises a functional layer and a protective layer, wherein in a circle O2 of the cross section of the complex fiber, the functional layer comprises a part surrounded by three equilong circular arcs L1, L2 and L3 and the periphery of the circle O2; the three equilong circular arcs respectively pass through three equidistant points on a concentric circle O1 of which the radius is smaller than that of the circle O2; and the three equilong circular arcs are non-intersected mutually. The preparation method of the conductive fiber comprises the following steps: evenly mixing conductive carbon black and an additive; then adding fiber-forming high polymer to prepare conductive master batch; and after drying the master batch, preparing the conductive complex fiber from the master batch and the fiber-forming high polymer by a spinning and drafting one step method. Due to the cross-section structure with the special design of the conductive complex fiber, the carbon black in the fiber can not peel off easily, so that the durability is improved. Simultaneously, the mechanical properties of the fiber are improved, and the surface friction coefficient of the fiber is reduced, thereby improving the post processing performance and being more favorable for use for customers.

Description

technical field [0001] The invention relates to a composite conductive fiber and a manufacturing method thereof, in particular to a durable carbon black type conductive fiber and a manufacturing method thereof Background technique [0002] Static electricity generated by clothing due to friction is a phenomenon that is often seen in daily life. The existence of static electricity makes it easier for clothes to absorb dust, which seriously affects the production of high-precision instruments, biopharmaceuticals, food and other industries; at the same time, as we all know, the existence of static electricity increases the possibility of fire and explosion in flammable and explosive places. Therefore, these occasions put forward higher requirements on the performance of the fabric, especially the antistatic performance. Synthetic fibers with the advantages of high strength, good wear resistance, and sufficient sources of raw materials are widely used in various fields of the t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/14D01F8/12D01F1/09D01D5/253
Inventor 袁平许志强杨春喜王颢王玥
Owner CTA HIGH TECH FIBER