阅读说明：本技术 一种防静电防护服 (Anti-static protective clothing ) 是由 陈涛 高阳 孙晓 王君 孙志超 马腾 梁建勋 费跃军 李睿 卢林 汪美顺 于 2020-05-20 设计创作，主要内容包括：本发明公开了一种防静电防护服,防静电防护服的导电丝包括聚合物内芯和复配型抗静电外层,所述聚合物内芯由包括按照重量份数计的50-60份的聚乙烯、5-10份的炭黑、5-10份的膨胀石墨和5-10份的纳米导电丝制成的长丝,所述复配型抗静电外层包括按照重量份数计的40-50份的聚合物内芯组分、3-6份的亲水性聚合物、5-10份的抗静电剂和2-5份助剂,所述聚合物内芯的表面设有至少三条轴向螺旋延伸的凹槽。复配性抗静电外层设计为同样具有聚合物内芯的成分,且其组分中包括纳米导电丝,增加了与涂覆型的且具有部分相同组分的抗静电外层之间的结合力；聚合物内芯的表面设置凹槽,减少了复配型抗静电外层被摩擦的次数,增加了耐磨性。(The invention discloses antistatic protective clothing, wherein a conductive wire of the antistatic protective clothing comprises a polymer inner core and a compound antistatic outer layer, the polymer inner core is a filament made of 50-60 parts by weight of polyethylene, 5-10 parts by weight of carbon black, 5-10 parts by weight of expanded graphite and 5-10 parts by weight of nano conductive wire, the compound antistatic outer layer comprises 40-50 parts by weight of polymer inner core component, 3-6 parts by weight of hydrophilic polymer, 5-10 parts by weight of antistatic agent and 2-5 parts by weight of auxiliary agent, and the surface of the polymer inner core is provided with at least three axially spirally extending grooves. The compounded antistatic outer layer is designed to be a component with a polymer inner core, and the component comprises nano conductive wires, so that the binding force between the compounded antistatic outer layer and the coating type antistatic outer layer with part of the same components is increased; the surface of the polymer inner core is provided with the groove, so that the times of rubbing the compound antistatic outer layer are reduced, and the wear resistance is improved.)

1. An anti-static protective garment comprises a protective upper garment and protective trousers, wherein the protective upper garment and the protective trousers are made of conductive yarns formed by twisting conductive yarns and blended yarns, and then anti-static grid cloth formed by warp knitting and/or weft knitting the conductive yarns, the conductive filament is characterized by comprising a polymer inner core and a compound antistatic outer layer, wherein the polymer inner core is a filament prepared from 50-60 parts by weight of polyethylene, 5-10 parts by weight of carbon black, 5-10 parts by weight of expanded graphite and 5-10 parts by weight of nano conductive filament, the compound antistatic outer layer comprises, by weight, 40-50 parts of a polymer inner core component, 3-6 parts of a hydrophilic polymer, 5-10 parts of an antistatic agent and 2-5 parts of an auxiliary agent, wherein the surface of the polymer inner core is provided with at least three axially spirally extending grooves.

2. The garment of claim 1 wherein the radial lines of the grooves are at an acute angle to the axis of the polymeric core.

3. The antistatic protective garment of claim 2, wherein the nano conductive filaments are nano silver wires; the hydrophilic polymer comprises one or more of polyacrylic acid, polyacrylamide, polyvinyl alcohol, polyurethane, polyoxyethylene fatty amide, polyoxyethylene alkylamine, polyoxyethylene alkyl ester and polyoxyethylene ether.

4. The antistatic protective garment of claim 3 wherein the antistatic agent is one or more of metal particles, metal oxide particles or conductive mica particles.

5. The antistatic protective garment as claimed in claim 4, wherein the auxiliary agent comprises maleic anhydride olefin graft copolymer, sodium hexametaphosphate, and the auxiliary agent is blended with the antistatic agent.

6. The antistatic protective clothing as claimed in claim 5, wherein the compounded antistatic outer layer further comprises 10-15 parts by weight of polyethylene glycol fatty acid ester and 2-5 parts by weight of mineral oil.

7. The antistatic protective garment of claim 6 wherein the blended yarn is made from a blend of hollow structure fibers; the twist of the conductive yarn is 30-50 twist/10 cm, the distance between the warp-direction conductive wires of the anti-static gridding cloth is 1-1.5cm, the distance between the weft-direction conductive wires is 1-1.5cm, the radius of the conductive wire is 16-35 um, and the content of the conductive wires is 4% -6% of the blended yarn.

8. The antistatic protective clothing of claim 7, wherein the antistatic mesh fabric is further provided with a radiation-proof layer and a warm-keeping layer on the outer side, and the ultraviolet screening agent and the ultraviolet absorbent are fixed on the radiation-proof layer by adopting a resin crosslinking method.

9. The antistatic protective clothing of claim 7 wherein the ultraviolet screening agent is nano-scale inorganic titanium dioxide or nano-zinc oxide and the ultraviolet absorber is organic salicylic acid, cyanoacrylate, benzophenone or benzotriazole.

Technical Field

The invention relates to the technical field of protective clothing, in particular to antistatic protective clothing.

Background

The anti-static fabric is made by twisting conductive yarns and blended yarns in parallel and then performing warp knitting and/or weft knitting, and the anti-static fabric is cut into anti-static clothes which have excellent and lasting anti-static and dustproof functions and can effectively release static charges of human bodies. The type, content and structural form of the conductive substance in the conductive yarn determine the resistivity and hue of the conductive yarn. When carbon black is used as the conductive material, the specific resistance is generally lower than that of the organic conductive fiber using metal oxide as the conductive material, but the carbon black has darker color and lower resistance as the carbon content increases. The organic conductive fiber of the metal oxide has relatively poor conductive performance, but has good durability, generally light color, is suitable for light color or needs to be further dyed, and is suitable for occasions with low requirements on the conductive performance. The conductive substance-coated organic conductive fiber has a low specific resistance, but the amount of the conductive substance coated is small, and the conductive substance is easily released after washing or dyeing, and thus the durability is relatively poor. In order to further improve the binding force and wear resistance of the coated outer layer, the antistatic clothing made of the coating type conductive fiber needs further improvement.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide the anti-static protective clothing with good durability and good anti-static effect of the anti-static agent.

In order to achieve the purpose, the technical scheme of the invention is to design an anti-static protective garment, which comprises a protective coat and protective trousers, the protective coat and the protective trousers are made of conductive yarn which is formed by twisting conductive yarn and blended yarn, then the conductive yarn is warp-knitted and/or weft-knitted to prepare the antistatic mesh fabric, the conductive yarn comprises a polymer inner core and a compound antistatic outer layer, the polymer inner core is a filament prepared from 50-60 parts by weight of polyethylene, 5-10 parts by weight of carbon black, 5-10 parts by weight of expanded graphite and 5-10 parts by weight of nano conductive yarn, the compound antistatic outer layer comprises, by weight, 40-50 parts of a polymer inner core component, 3-6 parts of a hydrophilic polymer, 5-10 parts of an antistatic agent and 2-5 parts of an auxiliary agent, wherein the surface of the polymer inner core is provided with at least three axially spirally extending grooves. The polyethylene in the polymer inner core can be well dispersed to promote the carbon black to form a conductive network, the surface resistance of the polymer inner core is greatly reduced under the synergistic action of the expanded graphite and the carbon black, the conductive network which is constructed by taking the expanded graphite and the carbon black as framework is formed, the protection effect of the electrostatic protection garment is improved, the compounded antistatic outer layer is designed to have the components of the polymer inner core as well, the components of the compounded antistatic outer layer comprise nanometer conductive wires, the nanometer conductive wires are uniformly dispersed in the inner core layer in a microscopic state, and the surface of the inner core layer has more bulges, so that the binding force between the compounded antistatic outer layer and the coated antistatic outer layer which has the same components as part of the coated antistatic outer layer is increased; the surface of the polymer inner core is provided with the grooves, so that the surface area of the polymer inner core and the coating amount of the compound antistatic outer layer are increased, the compound antistatic outer layer coated in the grooves is wrapped in the grooves, the times of friction are reduced, and the abrasion resistance of the compound antistatic outer layer is increased in a phase-changing manner.

In order to further improve the protection effect of the grooves on the compounded antistatic outer layer, the preferable technical scheme is that the radial line of the grooves and the axial line of the polymer inner core form an acute included angle.

The further preferred technical scheme is that the nano conductive wire is a nano silver wire; the hydrophilic polymer comprises one or more of polyacrylic acid, polyacrylamide, polyvinyl alcohol, polyurethane, polyoxyethylene fatty amide, polyoxyethylene alkylamine, polyoxyethylene alkyl ester and polyoxyethylene ether. Due to the addition of the hydrophilic polymer, the compound antistatic layer can absorb external moisture, so that the antistatic effect of the conductive wire is further improved.

Further preferably, the antistatic agent is one or more of metal particles, metal oxide particles or conductive mica particles.

The further preferable technical scheme is that the auxiliary agent comprises maleic anhydride olefin graft copolymer and sodium hexametaphosphate, and the auxiliary agent and the antistatic agent are blended. The addition of the auxiliary agent of the compatilizer improves the compatibility of the nano silver wire and the polymer matrix.

The further preferable technical scheme is that the compound antistatic outer layer also comprises 10-15 parts of polyethylene glycol fatty acid ester and 2-5 parts of mineral oil according to parts by weight.

In order to improve the warm-keeping effect of the antistatic protective clothing, the preferred technical scheme is that the blended yarns are made by blending hollow-structure fibers; the twist of the conductive yarn is 30-50 twist/10 cm, the distance between the warp-direction conductive wires of the anti-static gridding cloth is 1-1.5cm, the distance between the weft-direction conductive wires is 1-1.5cm, the radius of the conductive wire is 16-35 um, and the content of the conductive wires is 4% -6% of the blended yarn.

According to a further preferable technical scheme, the anti-static mesh cloth is further provided with an anti-radiation layer and a warm-keeping layer on the outer side, and the anti-radiation layer is fixedly provided with an ultraviolet shielding agent and an ultraviolet absorbent by adopting a resin crosslinking method.

The further preferable technical scheme is that the ultraviolet screening agent is nano-scale inorganic titanium dioxide or nano-scale zinc oxide, and the ultraviolet absorbent is organic salicylic acid series, cyanoacrylate series, benzophenone or benzotriazole.

The invention has the advantages and beneficial effects that: the antistatic protective clothing has the advantages of good durability and good antistatic effect of the antistatic agent. The polyethylene in the polymer inner core can be well dispersed to promote the carbon black to form a conductive network, the surface resistance of the polymer inner core is greatly reduced under the synergistic action of the expanded graphite and the carbon black, the conductive network which is constructed by the expanded graphite and the carbon black is formed, the protection effect of the electrostatic protection garment is improved, the compounded antistatic outer layer is designed to be a component which also has the polymer inner core, the components of the compounded antistatic outer layer comprise nanometer conductive wires, the nanometer conductive wires are uniformly dispersed in the inner core layer under a microscopic state, the surface of the inner core layer is provided with more bulges, and the binding force between the compounded antistatic outer layer and the coated antistatic outer layer which has partially same components is increased; the surface of the polymer inner core is provided with the grooves, so that the surface area of the polymer inner core and the coating amount of the compound antistatic outer layer are increased, the compound antistatic outer layer coated in the grooves is wrapped in the grooves, the times of friction are reduced, and the abrasion resistance of the compound antistatic outer layer is increased in a phase-changing manner. Due to the addition of the hydrophilic polymer, the compound antistatic layer can absorb external moisture, so that the antistatic effect of the conductive wire is further improved.

Detailed Description

The following further describes embodiments of the present invention with reference to examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.