Long-acting anti-static functional structure plastic brush wire

Abstract

The utility model is suitable for plastic brush silk technical field provides a kind of long-acting anti-static function structure's plastic brush silk, including core bundle and brush silk main body, at least one core bundle is evenly embedded in the brush silk main body, the both ends of the core bundle are flush with the both ends of brush silk main body;The core bundle is conductive fibre bundle;Or, the brush silk main body is anti-static brush silk main body.The utility model integrates anti-static function in brush silk ontology structure, solves the problem that existing anti-static brush silk effect is not lasting, is not washable, realizes the long-acting nature of anti-static function, excellent washability, and maintains good mechanical property, is suitable for industrial production.

Description

Technical Field

[0001] This utility model belongs to the field of plastic brush filament technology, and relates to a long-lasting anti-static plastic brush filament with a functional structure. The plastic brush filament is suitable for personal care, daily cleaning, electronic manufacturing, precision instrument cleaning and textile printing and dyeing. Background Technology

[0002] Plastic bristles are widely used in cleaning electronic components, dust removal of precision instruments, combing of textile fabrics, and personal care tools due to their good flexibility, abrasion resistance, and ease of processing. However, ordinary plastic bristles are prone to generating static electricity during use due to friction, leading to problems such as hair flying when combing, dust adhering to the bristle surface, and reduced cleaning effectiveness. In electronic manufacturing scenarios, static electricity can also interfere with electronic signals, generate electrostatic sparks, and cause component damage or safety hazards.

[0003] Currently, common antistatic plastic brush bristles mainly employ two technical approaches: one is surface coating with an antistatic agent, but the coating has weak adhesion to the bristle body and is easily detached after friction or washing, resulting in a short antistatic lifespan, typically only lasting 1-3 months; the other is adding antistatic masterbatch to the plastic substrate, but the conductive components are easily lost with washing, and the bristles generally withstand no more than 5 washes. Furthermore, excessive addition can lead to sticky bristle surfaces and increased breakage rates, affecting performance. In addition, existing products lack unified antistatic performance testing standards, making it difficult to accurately assess their lifespan and hindering their widespread application in high-end fields.

[0004] Therefore, there is an urgent need in the existing technology for a long-lasting antistatic plastic brush bristle that has durable antistatic properties, good water resistance, does not affect mechanical properties, and is suitable for industrial production. Summary of the Invention

[0005] This utility model provides a plastic brush bristle with a long-lasting antistatic function, aiming to solve the problems of existing antistatic brush bristles having short-lasting antistatic effect, poor water resistance, and negative impact on mechanical properties.

[0006] The present invention is implemented as follows:

[0007] A plastic brush bristle with a long-lasting antistatic function includes a core bundle and a brush bristle body. At least one core bundle is uniformly embedded in the brush bristle body, and the two ends of the core bundle are flush with the two ends of the brush bristle body.

[0008] The core bundle is a conductive fiber bundle; or...

[0009] The bristle body is an anti-static bristle body.

[0010] Further, the core bundle has a diameter of 0.05-0.15 mm, and the core bundle is composed of 2-8 single core filaments, the diameter of which is 5-5 μm. Even further, the conductive fiber bundle has a diameter of 0.05-0.15 mm, and the conductive fiber bundle is composed of 2-8 single conductive fiber filaments, the diameter of which is 5-5 μm.

[0011] Furthermore, the conductive fiber bundle is at least one of carbon fiber bundle, conductive polyester fiber bundle, conductive nylon fiber bundle, or metal fiber bundle.

[0012] Furthermore, when the core bundle is a conductive fiber bundle, the core bundle is wound around the brush bristle body, and one side of the core bundle is disposed on the surface of the brush bristle.

[0013] Furthermore, the winding configuration is such that the core bundle is evenly distributed on the inner side of the outer edge of the brush body.

[0014] Furthermore, the bristle body is a plastic-based bristle body or an antistatic bristle body, wherein the plastic-based bristle body is at least one of PE-based, PP-based, PA6-based, PA66-based, PBT-based, or PET-based bristle bodies. Even further, 0.2-2% of a compatibilizer is added to the plastic substrate, wherein the compatibilizer is maleic anhydride-grafted polyethylene, maleic anhydride-grafted polypropylene, or other compatibilizers, to improve the bonding force between the core bundle and the bristle body. By using the compatibilizer, the original flexibility, abrasion resistance, and other mechanical properties of the bristles are preserved.

[0015] Furthermore, when the bristle body is an antistatic bristle body, the bristle body covers the outer side of the core bundle; even further, the core bundle is a plastic substrate core bundle.

[0016] Furthermore, the antistatic brush bristle body is an antistatic plastic brush bristle body; the antistatic brush bristle body contains at least one of the following brush bristle bodies: self-modified carbon black, graphene, carbon nanotubes, metal ions, or conductive polymers.

[0017] Furthermore, the thickness of the bristle body is 0.01-2.0 mm, and the total diameter of the bristles is 0.05-5.0 mm.

[0018] Furthermore, the surface resistivity of the brush filaments is 10. 3 ~10 10 Ω, breaking strength ≥3.5cN / dtex, breaking elongation ≥15%, surface resistivity change rate ≤10% after 50 water washes.

[0019] Furthermore, the amount of the core bundle added accounts for only 3-20% of the total mass of the brush filaments.

[0020] The beneficial effects achieved by this utility model are:

[0021] 1. Due to the adoption of a structure that "embeds conductive fiber bundles into the plastic bristle body" or "composite of long-lasting antistatic bristle body and bundle core", the antistatic function is integrated into the bristle body, avoiding coating peeling or loss of conductive components. Therefore, it achieves long-lasting antistatic effect and excellent water resistance.

[0022] 2. The amount of core bundle added accounts for only 3-20% of the total mass of the bristles, and the amount of compatibilizer added in the plastic substrate is low, which will not affect the flexibility and wear resistance of the bristles. The mechanical properties such as breaking strength and elongation are comparable to those of ordinary plastic bristles.

[0023] 3. The brush bristles of this utility model have a simple structural design, and the manufacturing process can use the existing single and double extrusion molding equipment for plastic brush bristles. Only the traction and embedding device for conductive fiber bundles needs to be added. The industrial production difficulty is low and the cost is controllable. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the radial cross-sectional structure of the brush bristles provided in Embodiment 1 of this utility model;

[0025] Figure 2 This is a schematic diagram of the radial cross-section of the core-shell structure brush bristles provided in Embodiment 2 of this utility model;

[0026] Figure 3 This is another schematic diagram of the bristle distribution provided in Embodiment 3 of this utility model;

[0027] Figure 4 It is along Figure 3 A schematic diagram of the axial structure of the AA line of the middle brush bristles. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, top, bottom, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] It should be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] Currently, antistatic plastic brush bristles mainly suffer from drawbacks such as short-lasting antistatic effect, poor water resistance, and negative impact on mechanical properties. To address these technical problems, this invention proposes a plastic brush bristle with a long-lasting antistatic functional structure.

[0034] Example 1

[0035] Combination Figure 1 This embodiment provides a plastic brush filament with a long-lasting antistatic function, comprising a brush filament body 1 and three conductive fiber bundles 2 uniformly embedded therein. The brush filament body 1 and the conductive fiber bundles 2 are flush at both ends and of equal length. The conductive fiber bundles 2 are composed of multiple carbon fibers with a diameter of 5μm, each bundle having a diameter of approximately 0.1mm. The brush filament body 1 is a PA612 substrate with 0.5% maleic anhydride-grafted polyolefin compatibilizer added. The total diameter of the brush filament is approximately 0.3mm. During preparation, the PA612 substrate and the compatibilizer are melted together.

[0036] The surface resistance of the brush bristles in this embodiment is approximately 10⁻⁶. 7The surface resistivity remains essentially unchanged after 50 washes, exhibiting a tensile strength of 3.8 cN / dtex and an elongation at break of 25%. This embodiment establishes a stable internal conductive pathway by embedding conductive fiber bundles, achieving long-lasting antistatic properties and excellent washability.

[0037] Example 2

[0038] Combination Figure 2 This embodiment provides a long-lasting antistatic plastic brush bristle, comprising a bristle body 1 and a core bundle 2. The bristle body 1 and the conductive fiber bundle 2 are flush at both ends and of equal length. The bristle body 1 is a PA66 long-lasting antistatic substrate (containing 0.3% anti-migration agent), and the core bundle 2 is a PA66 modified substrate (containing 0.5% dispersant). The thickness of the bristle body 1 is approximately 0.12 mm, and the total diameter of the bristles is approximately 0.4 mm. It is prepared using a dual-extrusion co-extrusion process.

[0039] The surface resistance of the brush bristles in this embodiment is approximately 10⁻⁶. 9 Ω, tensile strength 4.2 cN / dtex, elongation at break 35%, surface resistivity slightly increases after 50 washes but still maintains good antistatic properties (approximately 10). 10 Ω). This embodiment uses a core-sheath composite structure to concentrate the antistatic function in the bristle body, while the core layer ensures mechanical properties and structural stability.

[0040] Example 3

[0041] Combination Figure 3 and Figure 4 This embodiment is similar to Embodiment 1, except that the core bundle 2 consists of 8 bundles of conductive nylon fibers, each bundle composed of 30 fibers with a diameter of 10μm. The brush filament body 1 is a PP substrate with 2% PE-g-MAH compatibilizer added. The total diameter of the brush filaments is approximately 0.5mm.

[0042] The surface resistance of the bristles in this embodiment is low, approximately 10. 4 It has a resistance of Ω, a tensile strength of 3.6 cN / dtex, an elongation at break of 18%, and excellent water resistance. This example demonstrates the effect of different conductive fiber materials and quantities on the adjustment of the resistance value.

[0043] All the above embodiments integrate the antistatic function into the brush bristle structure, including a core bundle with embedded conductive fiber bundles or a brush bristle body with an antistatic substrate. This effectively overcomes the defects of easy peeling and easy loss of components in the existing technology, and achieves long-lasting antistatic effect (lifespan of more than 2 years) and excellent water resistance (stable performance after 50 water washes). At the same time, it maintains good mechanical properties, and the production process is mature and easy to promote industrially.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A plastic brush bristle with a long-lasting antistatic function, characterized in that: It includes a core bundle and a bristle body, wherein at least one core bundle is uniformly embedded in the bristle body, and the two ends of the core bundle are flush with the two ends of the bristle body; The core bundle is a conductive fiber bundle; or... The bristle body is an anti-static bristle body.

2. The plastic brush bristles with a long-lasting antistatic functional structure according to claim 1, characterized in that: The core bundle has a diameter of 0.05-0.15 mm and is composed of 2-8 single core filaments, each with a diameter of 5-5 μm.

3. The plastic brush bristles with a long-lasting antistatic functional structure according to claim 1, characterized in that: The conductive fiber bundle is at least one of carbon fiber bundle, conductive polyester fiber bundle, conductive nylon fiber bundle, or metal fiber bundle.

4. The plastic brush bristles with a long-lasting antistatic functional structure according to claim 1, characterized in that: When the core bundle is a conductive fiber bundle, the core bundle is wound around the brush bristle body, and one side of the core bundle is disposed on the surface of the brush bristle.

5. The plastic brush bristles with a long-lasting antistatic functional structure according to claim 4, characterized in that: The winding configuration is such that the core bundle is evenly distributed on the inner side of the outer edge of the brush body.

6. The plastic brush bristles with a long-lasting antistatic functional structure according to claim 4, characterized in that: The bristle body is a plastic substrate bristle body or an anti-static bristle body.

7. The plastic brush bristles with a long-lasting antistatic functional structure according to claim 1, characterized in that: When the bristle body is an antistatic bristle body, the bristle body covers the outside of the core bundle.

8. The plastic brush bristles with a long-lasting antistatic functional structure according to claim 7, characterized in that: The core bundle is a plastic-based core bundle.

9. The plastic brush bristles with a long-lasting antistatic functional structure according to claim 7, characterized in that: The antistatic brush bristle body is an antistatic plastic brush bristle body.

10. The plastic brush bristles with a long-lasting antistatic functional structure according to claim 7, characterized in that: The thickness of the bristle body is 0.01-2.0 mm, and the total diameter of the bristles is 0.05-5.0 mm.

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