CN111253639B - Preparation method of environment-friendly thermosensitive butyronitrile protective gloves - Google Patents

Preparation method of environment-friendly thermosensitive butyronitrile protective gloves Download PDF

Info

Publication number
CN111253639B
CN111253639B CN202010253667.8A CN202010253667A CN111253639B CN 111253639 B CN111253639 B CN 111253639B CN 202010253667 A CN202010253667 A CN 202010253667A CN 111253639 B CN111253639 B CN 111253639B
Authority
CN
China
Prior art keywords
butyronitrile
vulcanized rubber
latex
parts
rubber material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202010253667.8A
Other languages
Chinese (zh)
Other versions
CN111253639A (en
Inventor
周海涛
孙永峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANDONG XINGYU GLOVES CO Ltd
Original Assignee
SHANDONG XINGYU GLOVES CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHANDONG XINGYU GLOVES CO Ltd filed Critical SHANDONG XINGYU GLOVES CO Ltd
Priority to CN202010253667.8A priority Critical patent/CN111253639B/en
Publication of CN111253639A publication Critical patent/CN111253639A/en
Application granted granted Critical
Publication of CN111253639B publication Critical patent/CN111253639B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/02—Organic and inorganic ingredients
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D19/00—Gloves
    • A41D19/0055—Plastic or rubber gloves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/14—Dipping a core
    • 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
    • C08K3/16—Halogen-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
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • 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
    • C08K3/28—Nitrogen-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
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/06—Ethers; Acetals; Ketals; Ortho-esters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
    • C08L9/02—Copolymers with acrylonitrile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/48—Wearing apparel
    • B29L2031/4842—Outerwear
    • B29L2031/4864—Gloves

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Textile Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention relates to a preparation method of environment-friendly thermosensitive butyronitrile protective gloves, which comprises the following steps: s1, sleeving the glove blank on the glove mold and heating to raise the temperature; s2, dipping the glove blank heated to the preset temperature into a heat-sensitive nitrile butadiene latex pre-vulcanized rubber material; the heat-sensitive butyronitrile latex pre-vulcanized rubber material comprises 90-120 parts by mass of butyronitrile pre-vulcanized rubber material, 0.5-6 parts by mass of stabilizer and 0.2-9 parts by mass of destabilizing agent; the destabilizing agent is a substance which reduces the stability of the latex and gels under the condition of heating; after the preparation of the butyronitrile pre-vulcanized rubber material is finished, storing the butyronitrile pre-vulcanized rubber material at room temperature, and then adding the stabilizer and the destabilizing agent into the butyronitrile pre-vulcanized rubber material and uniformly stirring the mixture before gum dipping; s3: vulcanizing and drying to obtain the environment-friendly thermosensitive butyronitrile protective gloves. The invention does not need to prepare a coagulant and an infiltration coagulant in advance, reduces the production procedures of the butyronitrile coated gloves, shortens the production line, reduces the application of harmful substances such as methanol and the like, and improves the production environment.

Description

Preparation method of environment-friendly thermosensitive butyronitrile protective gloves
Technical Field
The invention relates to the technical field of coating gloves, in particular to a preparation method of environment-friendly thermosensitive butyronitrile protective gloves.
Background
The rubber gloves are generally prepared by impregnating a woven glove blank with natural latex, synthetic latex, etc. on the surface thereof and curing the impregnated glove blank to form a rubber layer, thereby imparting water resistance to the glove. The preparation process of the labor protection dipped glove basically comprises the steps of dipping a coagulant, dipping glue, vulcanizing and the like; wherein, the dipping of the coagulant is an indispensable prepositive step for the chemical fiber knitted glove blank. Some cotton glove blanks are also provided with a pre-step of dipping a coagulant in order to quickly glue in the dipping process. One of the purposes of soaking the coagulant is to prevent the glove blanks with larger through holes such as chemical fiber knitted glove blanks from penetrating glue (the glue penetrates through the holes on the gloves and reaches the inner side of the glove blanks); the second purpose is to coat the glue quickly and improve the production speed. The coagulant is usually a methanol solution of calcium nitrate, calcium chloride, zinc chloride. However, methanol is a flammable, explosive and volatile hazardous chemical, and the vapor of methanol has certain toxicity and has certain influence on the health of workers in the workshop production environment. Therefore, the production process of the coated gloves using the environment-friendly coagulant or developing the coating gloves without impregnating the coagulant has great significance for improving the working environment.
Disclosure of Invention
Technical problem to be solved
In view of the defects and shortcomings of the prior art, the invention provides a preparation method of environment-friendly thermosensitive butyronitrile protective gloves.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
in a first aspect, the invention provides a preparation method of environment-friendly thermosensitive butyronitrile protective gloves, which comprises the following steps:
s1 preheating glove blank
Sleeving the glove blank on a glove mold, and heating the glove blank;
s2 gumming
Dipping the glove blank heated to the preset temperature into a heat-sensitive butyronitrile latex pre-vulcanized rubber material, wherein the heat-sensitive butyronitrile latex pre-vulcanized rubber material comprises 90-120 parts by mass of butyronitrile pre-vulcanized rubber material, 0.5-6 parts by mass of stabilizer and 0.2-9 parts by mass of destabilizing agent;
the destabilizing agent is a substance which reduces the stability of the latex and gels under the condition of heating;
after the preparation of the butyronitrile pre-vulcanized rubber material is finished, the butyronitrile pre-vulcanized rubber material is stored at room temperature for 2 days or more than 2 days, and then the stabilizer and the destabilizing agent are added into the butyronitrile pre-vulcanized rubber material and are uniformly stirred before gum dipping;
s3: vulcanizing and drying to obtain the environment-friendly thermosensitive butyronitrile protective glove.
As a preferred embodiment of the present invention, wherein: in step S1, the glove blank is heated to 60-130 ℃.
As a preferred embodiment of the present invention, wherein: in step S2, the stabilizer is one or a combination of several of potassium hydroxide, sodium hydroxide, ammonia water, sodium dodecyl sulfate, sodium dodecyl benzene sulfonate and OP-10.
As a preferred embodiment of the present invention, wherein: in step S2, the destabilizing agent is one or more of zinc-ammonia complex ion solution, polysiloxane, polyvinyl methyl ether, ammonium chloride, ammonium acetate, ammonium sulfate, ammonium nitrate, polypropylene glycol, and polyether polyoxymethylene dimethyl acetal.
As a preferred embodiment of the present invention, wherein: in step S2, 0.2 to 1 part by mass of an active agent is further added when preparing the heat-sensitive nitrile latex pre-vulcanized rubber compound, wherein the active agent is one or any combination of zinc oxide, zinc carbonate and zinc stearate.
As a preferred embodiment of the present invention, wherein: in step S2, the butyronitrile pre-vulcanized rubber material is prepared in advance and stored for 2 days at room temperature; the butyronitrile pre-vulcanized rubber compound comprises the following components: 90-120 parts of butyronitrile latex, 0-2 parts of vulcanization accelerator, 0.5-2 parts of vulcanizing agent, 0.5-4 parts of activator and 0.5-1.5 parts of anti-aging agent.
According to a preferred embodiment of the present invention, wherein: in step S2, the butyronitrile latex is acrylonitrile latex with acrylonitrile content of 25-35% and carboxyl content of 3-6%. Preferably, the butyronitrile latex is the butyronitrile latex with the acrylonitrile content of 27% and the carboxyl content of 4%.
The nitrile-butadiene latex has the advantages that as the content of acrylonitrile is higher, the polarity of macromolecules is increased, the cohesive energy density is increased, the solubility parameter is increased, the polarity is increased, the low temperature resistance and the cold resistance are poor, the vitrification conversion temperature is linearly increased along with the increase of the content of acrylonitrile, and the oil resistance and the performance of non-polar solvent resistance are stronger. The butyronitrile latex has good heat-sensitive performance, low heat-sensitive solidifying point of the latex, moderate glass transition temperature, good hand feeling and compactness of dipped products, excellent rebound resilience and dimensional stability, higher strength, better oil resistance and abrasion resistance and excellent storage stability of latex heat-sensitive complexes.
As a preferred embodiment of the present invention, wherein: in the step S2, in the step S,
the vulcanization accelerator is one or the combination of more than two of dithiocarbamates, thiurams, thiazoles, guanidines, thiourea and the like;
the vulcanizing agent is one or more of sulfur, zinc oxide, magnesium oxide and other metal oxide vulcanizing agents;
the active agent is one or any combination of the zinc oxide, the zinc carbonate and the zinc stearate;
the anti-aging agent is one or a combination of more of monophenol, polyphenol anti-aging agent, anti-aging agent RD, anti-aging agent 264 and anti-aging agent 2246.
According to a preferred embodiment of the present invention, wherein: in step S1, the glove blank is a chemical fiber glove blank or a cotton glove blank; the chemical fiber glove blank is a 13-needle glove blank.
According to a preferred embodiment of the present invention, wherein: in step S1, the glove blank is heated to 100-120 ℃.
According to a preferred embodiment of the present invention, wherein: in step S3, the vulcanization drying process mainly includes two stages of low-temperature pre-vulcanization drying and high-temperature curing. Preferably, the low-temperature prevulcanization drying temperature is 60-85 ℃ for 25-40 min; the high-temperature curing temperature is 100-120 ℃ and the time is 50-90 min.
The vulcanizing and drying are divided into two stages: if high-temperature vulcanization is used at the beginning, the surface of a product is easily formed into a film quickly and compactly, water vapor cannot be discharged due to more water in the product, bubbling and explosion on the surface of the product are easy to form, and serious product defects are caused, so that the product is easy to process by firstly carrying out low-temperature vulcanization (less than or equal to 85 ℃) for about 30 minutes, and the defects are avoided; then high-temperature vulcanization (not less than 100 ℃) is carried out for more than 50 minutes, and the use performance and the production standard of the product are achieved.
The stabilizer is a substance which can increase the surface charge, protective layer and hydration degree of latex particles and avoid the early gel precipitation of latex or compounded latex in the processes of storage, mechanical operation and compounding of auxiliary agents. The stability of the latex material can be improved by adding the stabilizer.
When an alkali such as potassium hydroxide, sodium hydroxide, ammonia water or the like is added to the latex, the pH of the latex can be changed, the surfactant can be changed, and the stability of the latex can be improved. Sodium dodecyl sulfate and sodium dodecyl benzene sulfonate as surfactant can change the charge on the surface of colloidal particle, so that the gel is mutually repelled and incapable of coagulating because of electrostatic charge, and the latex can be prevented from gelling and precipitating. The OP-10 is a white viscous substance, is very fine and smooth, is called alkylphenol polyoxyethylene ether, is a hydrophilic emulsifier and emulsion stabilizer, has good emulsifying, wetting and leveling performances and antistatic performance, is also used as a softener, improves the smoothness and elasticity of an adhesive film, and has a protective effect on colloid. Thus a preferred stabilizer for the present invention is OP-10.
A destabilizing agent is a substance that accelerates/promotes gelation. In particular, the destabilizing agents used in the present invention are those which can break the surface stabilizer or water layer of the micelle under heating/warming conditions to cause the agglomeration of the micelle. The destabilizing agent may be an electrolytic salt that ionizes the cations and compresses the double layer of the colloidal particles, resulting in a decrease in latex stability and gelation. Destabilizing agents can also be those which reduce the stability of negatively charged micelles, protect the micelles from destabilizing, or dehydrate the micelles to gel. Therefore, destabilizers can also be substances which dehydrate the surface of the crumb, destabilizing the latex by reducing the degree of hydration of the crumb surface. Wherein, the destabilizing agent can be polyvinyl methyl ether, is prepared into 15 percent aqueous solution to be added into the latex, and can be separated out after the latex is heated and heated.
Preferably, in the present invention, the destabilizing agent is preferably a zinc ammine complex ion solution which is a zinc ammine complex ion formed from zinc oxide and ammonia or an ammonium salt, and when the zinc ammine complex ion is decomposed by heat, an insoluble zinc soap is formed, resulting in gelation. The butyronitrile pre-vulcanized rubber compound contains active agents such as zinc oxide, zinc carbonate and the like, and ammonium salt (such as ammonium nitrate and ammonium chloride) is added, or zinc ammine complex ions are prepared firstly (zinc salt and ammonium salt are prepared into an aqueous solution in advance in proportion and then added into the rubber latex under stirring), and the like, so that the zinc ammine complex ions can be formed, and the gelation is promoted under the heating condition.
(III) advantageous effects
According to the invention, a certain proportion of a stabilizer and a destabilizing agent are added into the butyronitrile pre-vulcanized rubber material at the same time, wherein the stabilizer can increase the stability of butyronitrile latex in the butyronitrile pre-vulcanized rubber material, increase the surface charge, the protective layer and the hydration degree of latex particles, and avoid the occurrence of early gelation of the latex or the matched latex in the processes of storage, mechanical operation and matching with an auxiliary agent; the destabilizing agent has the opposite action to the destabilizing agent, and can change the charge of the surface layer of latex ions, remove a protective layer or reduce the hydration degree and promote substances of latex gelation, particularly generate the substances of promoting the latex gelation under the heating condition of temperature rise. Therefore, when the glove blank is heated to a preset temperature (60-130 ℃), when the hot glove blank is immersed into a heat-sensitive butyronitrile latex prevulcanization sizing material containing a stabilizing agent and a destabilizing agent, the destabilizing agent in the sizing material contacted with the glove blank generates a gelation promotion effect, so that the latex equilibrium state is rapidly broken, and the colloidal particles are coagulated into a film shape and attached to the surface of the glove blank without generating the problem of sizing material permeation.
Therefore, the preparation method of the invention does not need to prepare a coagulant and a soaking coagulant in advance, can reduce the production process of the butyronitrile coated gloves, shorten the production line, reduce the application of harmful substances such as methanol and the like, and improve the environment of a production workshop.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail below with reference to specific embodiments.
The invention provides a preparation method of environment-friendly thermosensitive butyronitrile protective gloves, which comprises the following steps:
s1 preheating glove blank
Sleeving the glove blank on a glove mold, and heating the glove blank;
wherein, the glove blank is heated to 60-130 ℃.
Wherein the glove blank is a chemical fiber glove blank or a cotton glove blank; the chemical fiber glove blank is a 13-needle glove blank.
S2 gumming
Dipping the glove blank heated to the preset temperature into a heat-sensitive butyronitrile latex pre-vulcanized rubber material, wherein the heat-sensitive butyronitrile latex pre-vulcanized rubber material comprises 90-120 parts by mass of butyronitrile pre-vulcanized rubber material, 0.5-6 parts by mass of stabilizer and 0.2-9 parts by mass of destabilizing agent; the destabilizing agent is a substance which reduces the stability of the latex and gels under the condition of heating; after the preparation of the butyronitrile pre-vulcanized rubber material is finished, the butyronitrile pre-vulcanized rubber material is firstly stored for 2 days at room temperature, and then the stabilizer and the destabilizing agent are added into the butyronitrile pre-vulcanized rubber material and are uniformly stirred before gum dipping.
The preparation process of the heat-sensitive nitrile latex precured rubber compound comprises the following two steps:
taking 90-120 parts by mass of butyronitrile latex, adding 0-2 parts by mass of vulcanization accelerator, 0.5-2 parts by mass of vulcanizing agent, 0.5-4 parts by mass of active agent and 0.5-1.5 parts by mass of anti-aging agent, stirring and uniformly mixing to obtain the butyronitrile pre-vulcanized rubber material. After the preparation, the mixture was left at room temperature for 2 days.
Preferably, the butyronitrile latex is the butyronitrile latex with the acrylonitrile content of 25-35% and the carboxyl content of 3-6%. Preferably, the butyronitrile latex is the butyronitrile latex with the acrylonitrile content of 27% and the carboxyl content of 4%.
And secondly, before gum dipping, taking 90-120 parts by mass of the butyronitrile pre-vulcanized rubber material, adding 0.5-6 parts by mass of a stabilizer, 0.2-9 parts by mass of a destabilizer or optionally adding 0.2-1 part by mass of an activator, and uniformly stirring to obtain the heat-sensitive butyronitrile latex pre-vulcanized rubber material.
In this step, a certain amount of thickener can be added as required to adjust the heat-sensitive nitrile latex precured size to the desired viscosity value. The viscosity value determines the amount of skim coating and the thickness of the finished glove.
Further, the stabilizer is one or a combination of more of potassium hydroxide, sodium hydroxide, ammonia water, sodium dodecyl sulfate, sodium dodecyl benzene sulfonate and OP-10.
Further, the destabilizing agent is one or a combination of more of zinc-ammonia complex ion solution, polysiloxane, polyvinyl methyl ether, ammonium chloride, ammonium acetate, ammonium sulfate, ammonium nitrate, polypropylene glycol and polyether polyoxymethylene dimethyl acetal.
S3: vulcanizing and drying to obtain the environment-friendly thermosensitive butyronitrile protective glove.
The vulcanization drying treatment mainly comprises two stages of low-temperature pre-vulcanization drying and high-temperature curing. Preferably, the low-temperature prevulcanization drying temperature is 60-85 ℃ for 25-40 min; the high-temperature curing temperature is 100-120 ℃ and the time is 50-90 min.
The butyronitrile pre-vulcanized rubber material in S2 has the following characteristics of various auxiliaries:
the vulcanization accelerator is one or a combination of more than two of dithiocarbamates, thiurams, thiazoles, guanidines, thioureas and the like. Specifically, the vulcanization accelerator is an accelerator D (diphenylguanidine C)13H13N3) DM (dibenzothiazyl disulfide C)14H8N2S4) DETU (diethyl thiourea C)5H12N2S), DPG (1, 3-diphenylguanidine), M (2-mercaptobenzothiazole C7H5NS2) TMTD (thiuram C)6H12N2S4) BZ (zinc dibutyldithiocarbamate C)18H36N2S4Zn), PZ (Zinc dimethyldithiocarbamate C)6H12N2S4Zn), TP (sodium dibutyldithiocarbamate C18H36N2S4Na2) zDC (zinc diethyldithiocarbamate C)10H20N2S4Zn), and CZ (N-cyclohexyl-2-benzothiazolesulfenamide C)13H16N2S2) One or any combination of the foregoing.
The vulcanizing agent is one or more of sulfur, zinc oxide, magnesium oxide and other metal oxide vulcanizing agents. The metal oxide vulcanizing agent has the advantages of quick vulcanization starting, good flat vulcanization curve, good heat resistance and aging resistance of vulcanized rubber and the like.
The active agent is one or more of zinc oxide, zinc carbonate and zinc stearate. The active agents can be used alone or in combination. The activator such as zinc oxide, zinc stearate, zinc carbonate and the like is used for promoting the formation of covalent bonds or ionic bonds of polymer molecular chains, so that the bridging effect among linear molecules is helped, and a plurality of linear molecules are mutually bonded and crosslinked into a network structure. Therefore, the rubber of the product has better performances of abrasion resistance, chemical resistance and the like through the auxiliary effect of the active agent. The function of the active agent in the mucilage mainly comprises (1) activating a vulcanization system; (2) the crosslinking density of the vulcanized rubber is improved; (3) the aging resistance of the vulcanized rubber is improved. In addition, the activator can fully exert the function of an organic accelerator, and the dosage is reduced/the vulcanization time is shortened. Wherein the activator ZnO2The effect is, besides the vulcanization activity, also a vulcanizing agent/reinforcing/compatibilizing effect.
The anti-aging agent is one or a combination of monophenol, polyphenol anti-aging agent, anti-aging agent RD and anti-aging agent 264. The anti-aging agent is used for delaying the aging speed of rubber. When the concentration of the anti-aging agent added into the rubber is too low, the anti-aging performance of the rubber is not affected. With the increase of the concentration of the anti-aging agent, the performance of the anti-aging agent can be improved. In order to make the anti-aging agent exert anti-aging performance, the concentration of the anti-aging agent is within a certain boundary, but the anti-aging performance is not improved when the concentration reaches the highest limit.
In accordance with the teachings of the present invention, the following description is provided in connection with the preferred embodiment.
Example 1
The embodiment provides a preparation method of an environment-friendly thermosensitive butyronitrile protective glove, which comprises the following steps:
(1) preparation of butyronitrile prevulcanization sizing material
Adding an auxiliary agent into butyronitrile latex with the acrylonitrile content of 27% and the carboxyl content of 4%, uniformly stirring, pre-vulcanizing at room temperature of 25 ℃, and storing for 2 days, wherein the butyronitrile pre-vulcanized rubber material comprises the following components in parts by weight: 100 parts of butyronitrile latex, 1 part of BZ (accelerator), 1.5 parts of sulfur (vulcanizing agent), 2 parts of zinc oxide (activating agent) and 1 part of anti-aging agent.
(2) Heat-sensitive nitrile butadiene latex prevulcanization sizing material
Adding 6 parts by mass of ammonia water (33%), 2 parts by mass of ammonium chloride (destabilizing agent) and 0.6 part by mass of zinc oxide (activating agent) into 100 parts by mass of butyronitrile prevulcanization sizing material which is prevulcanized and stored for 2 days, and uniformly stirring to obtain the heat-sensitive butyronitrile latex prevulcanization sizing material.
(3) And (3) soaking the knitted glove blank into the heat-sensitive nitrile butadiene latex pre-vulcanized rubber material prepared in the step (2) at the temperature of 110 ℃, and taking out the rubber for homogenizing.
(4) The environmental-friendly heat-sensitive butyronitrile protective gloves are prepared by pre-vulcanizing and drying at 75 ℃ for 40min and finally at the high-temperature vulcanization temperature of 110-120 ℃ for 80 min.
Example 2
The embodiment provides a preparation method of an environment-friendly thermosensitive butyronitrile protective glove, which comprises the following steps:
(1) preparation of butyronitrile prevulcanization sizing material
Adding an auxiliary agent into butyronitrile latex with the acrylonitrile content of 27% and the carboxyl content of 4%, uniformly stirring, pre-vulcanizing at room temperature of 25 ℃, and storing for 2 days, wherein the butyronitrile pre-vulcanized rubber material comprises the following components in parts by weight: 120 parts of butyronitrile latex, 1 part of DM (accelerator), 2 parts of sulfur (vulcanizing agent), 2.5 parts of zinc carbonate (activating agent) and 1 part of RD (anti-aging agent).
(2) Heat-sensitive nitrile butadiene latex prevulcanization sizing material
Adding 3 parts by mass of sodium hydroxide, 5 parts by mass of zinc-ammonia complex ion solution (30%) and 0.3 part by mass of zinc oxide (active agent) into 100 parts by mass of butyronitrile prevulcanization sizing material which is prevulcanized and stored for 2 days, and uniformly stirring to obtain the heat-sensitive butyronitrile latex prevulcanization sizing material.
(3) And (3) soaking the knitted glove blank into the heat-sensitive nitrile butadiene latex pre-vulcanized rubber material prepared in the step (2) at the temperature of 115 ℃, and taking out the rubber for homogenizing.
(4) The environment-friendly heat-sensitive butyronitrile protective gloves are prepared by pre-vulcanizing and drying at 80 ℃ for 25min and finally at a high-temperature vulcanization temperature of 120 ℃ for 80 min.
Example 3
The embodiment provides a preparation method of an environment-friendly thermosensitive butyronitrile protective glove, which comprises the following steps:
(1) preparation of butyronitrile prevulcanization sizing material
Adding an auxiliary agent into butyronitrile latex with the acrylonitrile content of 27% and the carboxyl content of 4%, uniformly stirring, pre-vulcanizing at room temperature of 25 ℃, and storing for 2 days, wherein the butyronitrile pre-vulcanized rubber material comprises the following components in parts by weight: 100 parts of butyronitrile latex, 1.5 parts of thiourea, 1 part of sulfur (vulcanizing agent), 2 parts of zinc oxide (activating agent) and 1 part of 264 (anti-aging agent).
(2) Heat-sensitive nitrile butadiene latex prevulcanization sizing material
Adding 4 parts by mass of OP-10, 5 parts by mass of ammonium nitrate (destabilizing agent) and 0.5 part by mass of zinc oxide (activating agent) into 100 parts by mass of the butyronitrile pre-vulcanized rubber material which is pre-vulcanized and stored for 2 days, and uniformly stirring to obtain the heat-sensitive butyronitrile latex pre-vulcanized rubber material.
(3) And (3) soaking the knitted glove blank into the heat-sensitive nitrile butadiene latex pre-vulcanized rubber material prepared in the step (2) at the temperature of 120 ℃, and taking out the rubber for homogenizing.
(4) The environment-friendly heat-sensitive butyronitrile protective gloves are prepared by pre-vulcanizing and drying at 75 ℃ for 30min and finally at a high-temperature vulcanization temperature of 120 ℃ for 90 min.
Example 4
The embodiment provides a preparation method of an environment-friendly thermosensitive butyronitrile protective glove, which comprises the following steps:
(1) preparation of butyronitrile prevulcanization sizing material
Adding an auxiliary agent into butyronitrile latex with the acrylonitrile content of 27% and the carboxyl content of 4%, uniformly stirring, pre-vulcanizing at room temperature of 25 ℃, and storing for 2 days, wherein the butyronitrile pre-vulcanized rubber material comprises the following components in parts by weight: 120 parts of butyronitrile latex, 1 part of accelerator D, 2 parts of sulfur (vulcanizing agent), 2 parts of zinc stearate (activating agent) and 1.5 parts of anti-aging agent.
(2) Heat-sensitive nitrile butadiene latex prevulcanization sizing material
Adding 4 parts by mass of sodium dodecyl sulfate, 4 parts by mass of polyvinyl methyl ether and 0.4 part by mass of zinc carbonate (active agent) into 100 parts by mass of butyronitrile precured rubber material which is precured and stored for 2 days, and uniformly stirring to obtain the heat-sensitive butyronitrile latex precured rubber material.
(3) And (3) soaking the knitted glove blank into the heat-sensitive nitrile butadiene latex pre-vulcanized rubber material prepared in the step (2) at the temperature of 115 ℃, and taking out the rubber for homogenizing.
(4) The environment-friendly heat-sensitive butyronitrile protective gloves are prepared by pre-vulcanizing and drying at 80 ℃ for 40min and finally at the high-temperature vulcanization temperature of 115 ℃ for 80 min.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (9)

1. A preparation method of environment-friendly thermosensitive butyronitrile protective gloves is characterized by comprising the following steps:
s1 preheating glove blank
Sleeving the glove blank on a glove mold, and heating the glove blank;
s2 gumming
Dipping the glove blank heated to the preset temperature into a heat-sensitive butyronitrile latex pre-vulcanized rubber material, wherein the heat-sensitive butyronitrile latex pre-vulcanized rubber material comprises 90-120 parts by mass of butyronitrile pre-vulcanized rubber material, 0.5-6 parts by mass of stabilizer and 0.2-9 parts by mass of destabilizing agent; the destabilizing agent is a substance which reduces the stability of the latex and gels under the condition of heating;
the destabilizing agent is one or a combination of more of zinc-ammonia complex ion solution, polysiloxane, polyvinyl methyl ether, ammonium chloride, ammonium acetate, ammonium sulfate, ammonium nitrate, polypropylene glycol and polyether polyoxymethylene dimethyl acetal;
after the preparation of the butyronitrile pre-vulcanized rubber material is finished, storing the butyronitrile pre-vulcanized rubber material at room temperature, and then adding the stabilizer and the destabilizing agent into the butyronitrile pre-vulcanized rubber material and uniformly stirring the mixture before gum dipping;
s3: vulcanizing and drying to obtain the environment-friendly thermosensitive butyronitrile protective glove.
2. The method of claim 1, wherein the glove blank is heated to 60-130 ℃ in step S1.
3. The method according to claim 1, wherein in step S2, the stabilizer is one or more of potassium hydroxide, sodium hydroxide, ammonia water, sodium dodecyl sulfate, sodium dodecyl benzene sulfonate and OP-10.
4. The method according to claim 1, wherein in step S2, 0.2-1 part by mass of an active agent is added when preparing the heat-sensitive nitrile latex pre-vulcanized rubber compound, wherein the active agent is one of zinc oxide, zinc carbonate and zinc stearate or any combination of the above.
5. The method according to claim 1 or 4, wherein in step S2, the nitrile precured compound is a compound which is prepared in advance and stored at room temperature for 2 days; the butyronitrile pre-vulcanized rubber compound comprises the following components: 90-120 parts of butyronitrile latex, 0-2 parts of vulcanization accelerator, 0.5-2 parts of vulcanizing agent, 0.5-4 parts of activator and 0.5-1.5 parts of anti-aging agent.
6. The method according to claim 5, wherein in step S2, the nitrile latex is a nitrile latex having an acrylonitrile content of 25-35% and a carboxyl content of 3-6%.
7. The production method according to claim 5, wherein, in step S2,
the vulcanization accelerator is one or the combination of more than two of dithiocarbamates, thiurams, thiazoles, guanidines and thioureas;
the vulcanizing agent is one or more of sulfur, zinc oxide and magnesium oxide metal oxide vulcanizing agents;
the active agent is one or any combination of the zinc oxide, the zinc carbonate and the zinc stearate;
the anti-aging agent is one or a combination of more of monophenol anti-aging agent, polyphenol anti-aging agent and anti-aging agent RD.
8. The method according to claim 1, wherein in step S2, the glove blank is a chemical fiber glove blank or a cotton glove blank; the chemical fiber glove blank is a 13-needle glove blank.
9. The method according to claim 1, wherein in step S2, the stabilizer is OP-10; the destabilizing agent is zinc-ammonia complex ion solution, ammonium chloride, ammonium acetate, ammonium sulfate or ammonium nitrate.
CN202010253667.8A 2020-04-01 2020-04-01 Preparation method of environment-friendly thermosensitive butyronitrile protective gloves Active CN111253639B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010253667.8A CN111253639B (en) 2020-04-01 2020-04-01 Preparation method of environment-friendly thermosensitive butyronitrile protective gloves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010253667.8A CN111253639B (en) 2020-04-01 2020-04-01 Preparation method of environment-friendly thermosensitive butyronitrile protective gloves

Publications (2)

Publication Number Publication Date
CN111253639A CN111253639A (en) 2020-06-09
CN111253639B true CN111253639B (en) 2022-04-12

Family

ID=70943442

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010253667.8A Active CN111253639B (en) 2020-04-01 2020-04-01 Preparation method of environment-friendly thermosensitive butyronitrile protective gloves

Country Status (1)

Country Link
CN (1) CN111253639B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112480501B (en) * 2020-10-09 2023-06-27 中红普林医疗用品股份有限公司 Production process for improving cross-linking density of nitrile glove under condition of not increasing energy consumption
CN113185624B (en) * 2021-05-13 2022-09-09 山东星宇手套有限公司 Environment-friendly water-based latex coagulant and preparation method of rubber coating product
CN113773565A (en) * 2021-09-15 2021-12-10 中国热带农业科学院农产品加工研究所 Sulfur-free vulcanized carboxylic nitrile latex and vulcanization method and application thereof
CN114133589A (en) * 2021-12-27 2022-03-04 南通强生新材料科技股份有限公司 Novel butyronitrile butadiene styrene composite latex dipping slurry and preparation method thereof
US20240026131A1 (en) * 2022-07-20 2024-01-25 Karex Holdings Sdn. Bhd. Nitrile rubber condoms and methods of making them
CN117402382A (en) * 2023-09-26 2024-01-16 江苏恒辉安防股份有限公司 Preparation method of self-repairing butyronitrile labor protection gloves

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002309043A (en) * 2001-04-12 2002-10-23 Sumitomo Rubber Ind Ltd Rubber latex composition and glove using the same
CN108143031A (en) * 2018-01-15 2018-06-12 安徽龙谷商贸有限公司 A kind of preparation process of novel butyronitrile gloves
CN108384079B (en) * 2018-02-27 2020-07-03 山东星宇手套有限公司 Preparation method of nitrile rubber wrinkled gloves
CN109318413A (en) * 2018-08-27 2019-02-12 山东星宇手套有限公司 A kind of preparation method of butyronitrile slip-proof glove
CN109627517B (en) * 2018-11-23 2021-01-15 北京瑞京乳胶制品有限公司 Acid and alkali resistant latex gloves and preparation process thereof
CN109837766A (en) * 2019-01-25 2019-06-04 南通倍成劳护用品有限公司 A kind of antistatic butyronitrile gloves and preparation method thereof
CN110240718A (en) * 2019-05-23 2019-09-17 世目特种防护用品科技（江苏）有限公司 A kind of preparation method of high abrasion latex mixing gloves

Also Published As

Publication number Publication date
CN111253639A (en) 2020-06-09

Similar Documents

Publication Publication Date Title
CN111253639B (en) Preparation method of environment-friendly thermosensitive butyronitrile protective gloves
CN108384079B (en) Preparation method of nitrile rubber wrinkled gloves
EP2280618B1 (en) Dip-formed synthetic polyisoprene latex articles with improved intraparticle and interparticle crosslinks
EP0925329B1 (en) Soft nitrile rubber formulation
US20150128329A1 (en) Polymeric compositions comprising polyisoprene
EP1569702B1 (en) Crosslinking agent for coated elastomeric article
CN108440775B (en) Preparation method of natural rubber gloves free of blooming
JP2015094038A (en) Manufacturing method of glove
CN210117348U (en) Polymeric article and condom
CN108433217B (en) Preparation method of butyronitrile wig bubble anti-slip gloves
JPH0762003A (en) Preparation of rubber article
JP6021198B2 (en) Manufacturing method of rubber gloves
CN114672082A (en) Carboxylic butyronitrile emulsion and preparation method and application thereof
JP2014169517A (en) Method for producing rubber glove
WO2016099307A1 (en) A latex composition for the manufacture of insulation gloves which withstand voltage of 40 v
CN112280130A (en) Method for preparing latex film product by using polyisoprene latex
US2718536A (en) Manufacture of rubber articles
CN114381054B (en) Synthetic polyisoprene latex condom with reduced nitrosamine content
JP5490190B2 (en) Gloves and manufacturing method thereof
US2006862A (en) Manufacture of articles from aqueous rubber dispersions
KR20080041776A (en) Waterborne polymer coated glove and preparation method thereof
US1926285A (en) Method of tihckening latex and product thereof
CA3210458A1 (en) Rare-earth catalysed polyisoprene articles
CN117264243A (en) Method for treating glove cores by using aqueous PU foaming composite latex
CN114634660A (en) Preparation process of light and thin butyronitrile gloves

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: A preparation method for environmentally friendly thermosensitive nitrile protective gloves

Effective date of registration: 20231114

Granted publication date: 20220412

Pledgee: Qingdao Bank Co.,Ltd. Weifang Gaomi Branch

Pledgor: SHANDONG XINGYU GLOVES Co.,Ltd.

Registration number: Y2023980065537

PC01 Cancellation of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right

Granted publication date: 20220412

Pledgee: Qingdao Bank Co.,Ltd. Weifang Gaomi Branch

Pledgor: SHANDONG XINGYU GLOVES Co.,Ltd.

Registration number: Y2023980065537