CN114437419A - Insulating glove for low-voltage live working and preparation method thereof - Google Patents
Insulating glove for low-voltage live working and preparation method thereof Download PDFInfo
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- CN114437419A CN114437419A CN202111640470.0A CN202111640470A CN114437419A CN 114437419 A CN114437419 A CN 114437419A CN 202111640470 A CN202111640470 A CN 202111640470A CN 114437419 A CN114437419 A CN 114437419A
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- Prior art keywords
- low
- live working
- insulating
- voltage live
- insulating glove
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/02—Direct processing of dispersions, e.g. latex, to articles
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D19/00—Gloves
- A41D19/0055—Plastic or rubber gloves
- A41D19/0058—Three-dimensional gloves
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2307/00—Characterised by the use of natural rubber
- C08J2307/02—Latex
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
- C08J2491/06—Waxes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/346—Clay
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
Abstract
The invention discloses an insulating glove for low-voltage live working and a preparation method thereof. The insulating gloves comprise the following raw materials in parts by weight: 100 parts of natural latex; 3.5-4.5 parts of mixed dispersion; 8-16 parts of insulating filler; 0-3 parts of paraffin; wherein the mixed dispersion is prepared by grinding and mixing a vulcanizing agent, an accelerator and a compounding agent together. The invention takes natural latex as a main material, increases the electrical insulation performance of the material and improves various performances of the insulating gloves by adding insulating filler and carrying out formula design, and is particularly suitable for low-voltage live working environment.
Description
Technical Field
The invention relates to the technical field of insulating gloves, in particular to an insulating glove for low-voltage live working.
Background
The rubber has good electrical insulation performance. The insulating gloves are made of natural rubber and special rubber as main materials, and play a role in protection when being applied to live working scenes.
At present, the insulating gloves for live working are generally selected and used according to the electrical performance requirement grades of different working environments, the main material of the insulating gloves is generally natural rubber or special rubber such as styrene butadiene rubber, butyl rubber, ethylene propylene rubber, silicon rubber and the like, and the preparation process mostly adopts a compression molding process or a dipping molding process. In the compression molding process, the product is not designed in a hand shape, and the problems of poor softness, poor operation sensitivity, inconvenience in wearing and the like exist.
Although products with different electrical performance requirement grades exist in the market aiming at different use environment requirements, most of the products are mainly used in a high-voltage live working environment, the products are thick, the thickness is more than 2mm, the products are not suitable for a narrow environment under low-voltage live working, and the product sensitivity is poor.
Disclosure of Invention
Based on the above, the invention aims to develop the insulating gloves for low-voltage live working, which are specially used in the low-voltage live working environment, and the preparation method thereof. The insulating gloves have better electrical insulating property, are softer, lighter, thinner and breathable, are fitted with hand shapes, are comfortable to wear, are more sensitive and convenient to operate, have improved overall performance, and are particularly suitable for narrower working environments of low-voltage live working.
The above purpose of the invention is realized by the following technical scheme:
according to one aspect of the invention, the invention provides an insulating glove for low-voltage live working, which comprises the following raw materials in parts by weight:
wherein the mixed dispersion is prepared by grinding and mixing a vulcanizing agent, an accelerator and a compounding agent together.
Optionally, the insulating filler includes one or a mixture of more of pottery clay and mica powder. Preferably, the insulating filler is 10 to 18 parts by mass.
Optionally, the paraffin is 0.5-3 parts by mass.
Optionally, the rubber content of the insulating glove is more than 90%.
Optionally, the vulcanizing agent is sulfur, and the accelerator is one or more of PX, TT, ZDIBC, and ZDC.
Optionally, the compounding agent comprises one or more of an active agent, an anti-aging agent and a stabilizing agent.
Optionally, the raw materials further comprise pigments: 0.01 to 0.05 parts by mass.
Optionally, the thickness of the insulating glove is 1.4 mm-1.7 mm.
According to another aspect of the present invention, the present invention provides a method for preparing the insulating glove for low voltage live working, comprising:
grinding and mixing a vulcanizing agent, an accelerator and a compounding agent together to obtain a mixed dispersion;
weighing natural latex, mixed dispersoid, insulating filler and paraffin according to the mass parts, preparing latex, and vulcanizing the latex to obtain vulcanized latex;
dipping a hand model into a coagulant, drying, dipping vulcanized latex, shaping, leaching and drying; dipping vulcanized latex for the first time, shaping and leaching, dipping the vulcanized latex for the second time and drying;
and carrying out post-treatment, surface treatment and drying to obtain the finished product of the insulating glove.
Alternatively, the vulcanized latex may be dipped once or several times, for example, dipping the vulcanized latex once and then leaching the vulcanized latex by sizing, and then dipping the vulcanized latex twice and drying the dipped vulcanized latex.
Optionally, the hand model is designed by adopting pitted surface, and the times of impregnating the coagulator are 1-3 times.
Optionally, the leaching time is 45 s-120 s.
Has the advantages that: the invention fills the blank of gloves special for low-voltage live working in domestic market, the invention takes natural latex as a main material, increases the electrical insulation performance of the material by adding insulating filler and carrying out formula design, improves the material vulcanization system by adopting mixed dispersoid, ensures that the compounding agent is uniformly dispersed, and finally improves the overall performance of the insulating gloves.
Compared with the prior art, the invention has the advantages and beneficial effects that:
1) the invention is specially designed for low-voltage live working environment (high-voltage electrical insulation performance is not required), according to the special design of human hand type, after the electrical performance reaches the corresponding standard, the insulating glove is more attached to the hand, namely palm and fingers, thereby facilitating gripping and being suitable for low-voltage live working environment.
2) The insulating gloves disclosed by the invention are softer, lighter and thinner, the thickness is generally about 1.65mm, the perspiration and the ventilation are facilitated, the influence of the perspiration on the electric insulation performance of hands is reduced, and the risk of electric shock accidents is reduced.
3) The insulating glove is easy to wear, comfortable to wear, convenient to grasp various appliances in operation, sensitive and convenient to operate, and particularly suitable for narrow working environments of low-voltage live working.
4) The preparation method adopts the dipping process, and the hand model adopts the pitted surface design, thereby not only meeting the requirement of grabbing tools during operation, but also avoiding the risk of influencing the electrical insulation performance due to the product defects caused by patterns.
5) Further, the invention optimizes the leaching time, namely increasing the leaching time to 45 s-120 s, thereby reducing the adverse effect of the conductive substance on the electrical insulation.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides an insulating glove for low-voltage live working, which comprises the following raw materials in parts by weight: 100 parts by mass of natural latex; 3.5-4.5 parts by mass of the mixed dispersion; 8-18 parts by mass of an insulating filler; 0-3 parts by mass of paraffin; 0 to 0.05 parts by mass of a pigment.
In the invention, the natural latex is used as a main material, and the content of the prepared insulating gloves is more than 90%. The pigment is an optional component, and the adding amount of the pigment can be 0.01-0.05 part by mass. The insulating filler comprises one or a mixture of more of argil, mica powder and the like; preferably 10 to 18 parts by mass. The paraffin is an optional component, the addition amount of the paraffin can be 0.5-3 parts by mass when the paraffin is added, and the flexibility of the glove can be improved by adding the paraffin as a plasticizer.
The mixed dispersion is prepared by grinding and mixing a vulcanizing agent, an accelerator and a compounding agent together. The preferable ratio of the vulcanizing agent to the accelerator in the mixed dispersion is (1-2): 1, this ratio range can improve the curing system. Further, the proportion of the vulcanizing agent, the accelerator and the compounding agent is (1-2): 1: (1-2), grinding and mixing to obtain a uniform mixed dispersion. Wherein, the vulcanizing agent can be sulfur. The accelerant can be one or more of PX, TT, ZDIBC, ZDC and the like; wherein the accelerant PX is (T-4) -bis (ethylphenylcarbamoyldithio-S, S') zinc; accelerator TT is tetramethyl thiuram disulfide; the promoter ZDIBC is zinc diisobutyl dithiocarbamate; the accelerator ZDC is zinc diethyldithiocarbamate. The compounding agent comprises one or more of an active agent, an anti-aging agent and a stabilizing agent, wherein the active agent can be ZnO or ZnCO3One or more of the antioxidant, stabilizer, etc. can be one or more of 264, WLS, DBH, etc.
The invention takes natural latex as a main material, increases the electrical insulation performance of the material by adding insulating filler and carrying out formula design, improves the vulcanization system by adjusting a vulcanizing agent and an accelerant, and uniformly disperses various compounding agents by adopting a mode of jointly grinding and mixing dispersion of the compounding agents, thereby finally achieving the improvement of the overall performance of the insulating gloves (for example, the insulating gloves are softer, thinner, breathable, fit with hand shapes, comfortable to wear, and more sensitive and convenient to operate), further optimizing the electrical insulation performance of the insulating gloves, and being particularly suitable for the narrower environment of low-voltage live working.
According to another aspect of the present invention, the present invention provides a method for preparing the insulating glove for low voltage live working, including:
and step S10, preparing natural latex emulsion, preparing mixed dispersoid, and carrying out analysis performance detection on the natural latex and the mixed dispersoid to ensure that each index of the mixed dispersoid and the natural latex meets the requirement, and carrying out the next step after the mixed dispersoid and the natural latex are qualified. Wherein the preparation of the mixed dispersoid is obtained by grinding and uniformly mixing a vulcanizing agent, an anti-aging agent, an accelerator, an active agent and a stabilizer until the sedimentation amount of the mixed dispersoid is less than or equal to 320 (mg/h. 7.069 cm)2)。
And step S20, weighing natural latex, mixed dispersoid, insulating filler and paraffin according to parts by weight, preparing the latex, and vulcanizing the latex at 45-70 ℃ for 45-120 min to obtain vulcanized latex.
Step S30, dipping the hand model designed by the pitted surface for 1-3 times with a coagulant, drying, dipping vulcanized latex, shaping, leaching for 45-120S, and drying.
Wherein, the dipping forming can be carried out once or for multiple times. For example, the vulcanized latex is dipped for the first time, shaped, leached for 45 to 60 seconds, dipped for the second time and dried; or adopting one-step dipping molding to leach for 60-120 s.
In the step, the coagulant is preferably soaked for 2-3 times, so that the surface of the glue film is more compact and has no defects during gum dipping. Wherein the coagulant may be calcium chloride. The hand model adopts the pitted surface design, is convenient for snatch, and finger and palm design more laminate the hand simultaneously, thereby the demand of snatching the apparatus when both satisfying the operation avoids influencing the risk of electrical insulation performance because of the decorative pattern leads to product defect again.
And step S40, post-processing, surface processing, drying and performance detection to obtain the finished product of the insulating glove.
According to the invention, the impregnation process is adopted, and the hand model is designed by adopting the pitted surface, so that the formed insulating glove is more tightly attached to the hand, the requirement for grabbing tools during operation is met, and the risk that the electrical insulating property is influenced due to the defect of a product caused by patterns is avoided; meanwhile, the leaching time is increased to 45-120 s, the steps such as leaching time and the like are optimized, the adverse effect of a conductive substance on the electric insulation is reduced, and after post-treatment, the insulating gloves disclosed by the invention are softer in use hand feeling and convenient to operate.
The technical solution of the present invention is further described below with reference to specific examples and comparative examples:
the formulations of examples 1-2 and comparative example 1 are shown in table 1 below:
TABLE 1 examples 1-2 and comparative example 1 formulations
| Example 1 | Example 2 | Comparative example 1 | |
| Natural latex | 100 | 100 | 100 |
| Mixed dispersion | 3.7 | 3.7 | 3.7 |
| Insulating filler | 15 | 15 | 0 |
| Paraffin oil | 0 | 3 | 0 |
| Pigment (I) | 0.03 | 0.03 | 0.03 |
Preparation procedure for example 1:
1) the sulfur, the accelerator ZDC, the activator ZnO, the antioxidant 264 and the stabilizer KOH are ground, mixed and dispersed uniformly according to the proportion of 3:2.5:1.5:1.5:1 to obtain a mixed dispersion.
2) Preparing latex according to the formula, wherein mica is adopted as the insulating filler; and (3) vulcanizing the latex at 70 ℃ for 1h to obtain vulcanized latex.
3) Dipping the glove model designed by the pitted surface for 2 times with a coagulant, drying, dipping vulcanized latex for the first time, shaping, leaching for 60s, dipping vulcanized latex for the second time, and drying.
4) And (4) carrying out post-treatment, surface treatment, drying and performance detection to obtain a finished product.
The preparation scheme of example 2 differs from that of example 1 in that: the accelerant adopts ZDC and TT, the insulating filler is argil and mica powder, and paraffin oil is added in the formula; the one-time dip forming is carried out, and the leaching time is 120 s.
The procedure of comparative example 1 was the same as in example 1, and the formulation contained no insulating material.
The results of the performance tests performed on examples 1-2 and comparative example 1 are shown in table 2 below:
TABLE 2 results of Performance test of examples 1-2 and comparative example 1
| Example 1 | Example 2 | Comparative example 1 | |
| Maximum voltage at breakdown (kV) | 10.65 | ＞10 | 4 |
| Leakage current (mA) | 2.99 | 3.15 | ＞30 |
| GB/T17622-2008 requirement | Level 0 | Level 0 | Not reaching the standard |
6) From the above test results it can be seen that: the electrical performance of the sample prepared by the formula meets the 0-level requirement of electrical performance in GB/T17622-2008, meets the requirement of low-voltage live working, and does not reach the standard in comparative example 1. In addition, through detection, the insulating gloves prepared by the invention are about 1.65mm in thickness, soft, light and thin, are favorable for perspiration and ventilation, can reduce the influence of hand perspiration on electrical insulating property, reduce the risk of electric shock accidents, and can be suitable for narrower environments of low-voltage live working.
The description of the present invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (10)
1. The insulating glove for low-voltage live working is characterized by comprising the following raw materials in parts by weight:
wherein the mixed dispersion is prepared by grinding and mixing a vulcanizing agent, an accelerator and a compounding agent together.
2. The insulating glove for low-voltage live working according to claim 1, wherein the insulating filler comprises one or more of pottery clay and mica powder.
3. The insulating glove for low-voltage live working according to claim 1, wherein the insulating filler is 10 to 18 parts by mass.
4. The insulating glove for low-voltage live working according to claim 1, wherein the paraffin wax is 0.5 to 3 parts by mass.
5. The insulating glove for low-voltage live working according to claim 1, wherein the rubber content of the insulating glove is 90% or more.
6. The insulating glove for low-voltage live working according to claim 5, wherein the vulcanizing agent is sulfur; the accelerant is one or more of PX, TT, ZDIBC and ZDC.
7. The insulating glove for low-voltage live working according to claim 1, wherein the compounding agent comprises one or more of an active agent, an anti-aging agent, and a stabilizer.
8. The insulating glove for low-voltage live working according to claim 1, wherein the raw material further comprises: 0.01 to 0.05 parts by mass of a pigment.
9. A method for preparing an insulating glove for low-voltage live working according to any one of claims 1 to 8, comprising:
grinding and mixing a vulcanizing agent, an accelerator and a compounding agent together to obtain a mixed dispersion;
weighing natural latex, mixed dispersoid, insulating filler and paraffin according to the parts by weight, preparing latex, and vulcanizing the latex to obtain vulcanized latex;
dipping a hand model into a coagulant, drying, dipping vulcanized latex, shaping, leaching and drying;
and carrying out post-treatment, surface treatment and drying to obtain the finished product of the insulating glove.
10. The method for manufacturing an insulating glove for low-voltage live working according to claim 9, wherein the hand model is designed by using a pitted surface, the number of dipping coagulants is 1 to 3, the number of dipping vulcanized latex is 1 to 2, and the leaching time is 45 to 120 s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111640470.0A CN114437419A (en) | 2021-12-29 | 2021-12-29 | Insulating glove for low-voltage live working and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111640470.0A CN114437419A (en) | 2021-12-29 | 2021-12-29 | Insulating glove for low-voltage live working and preparation method thereof |
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| CN114437419A true CN114437419A (en) | 2022-05-06 |
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| CN202111640470.0A Pending CN114437419A (en) | 2021-12-29 | 2021-12-29 | Insulating glove for low-voltage live working and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115490930A (en) * | 2022-09-30 | 2022-12-20 | 天津双安劳保橡胶有限公司 | Latex insulation anti-slip glove for live working and preparation method thereof |
| CN115670056A (en) * | 2022-10-26 | 2023-02-03 | 惠州市龙源电力技术服务有限公司 | Low-voltage live-line work insulating glove and preparation method thereof |
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2021
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Cited By (2)
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| CN115490930A (en) * | 2022-09-30 | 2022-12-20 | 天津双安劳保橡胶有限公司 | Latex insulation anti-slip glove for live working and preparation method thereof |
| CN115670056A (en) * | 2022-10-26 | 2023-02-03 | 惠州市龙源电力技术服务有限公司 | Low-voltage live-line work insulating glove and preparation method thereof |
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