CN113248764A - Rubber surface treating agent, preparation method and rubber surface treatment process - Google Patents

Rubber surface treating agent, preparation method and rubber surface treatment process Download PDF

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Publication number
CN113248764A
CN113248764A CN202110687716.3A CN202110687716A CN113248764A CN 113248764 A CN113248764 A CN 113248764A CN 202110687716 A CN202110687716 A CN 202110687716A CN 113248764 A CN113248764 A CN 113248764A
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rubber
functional
parts
latex
treating agent
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CN113248764B (en
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台宝泉
孙永峰
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Xingyu Medical Technology Co ltd
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SHANDONG XINGYU GLOVES CO Ltd
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04Coating
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2321/00Characterised by the use of unspecified rubbers

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Gloves (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)

Abstract

The present invention relates to a rubber surface treatment agent comprising: 100 parts by mass of a main solvent; 3-20 parts of a coagulant; 1-15 parts of functional additive A; 0.1-5 parts of functional additive B; the main solvent is one or a combination of several of the following solvents: n-heptane, cycloheptane, C11-C33 chain alkane, C11-C33 cyclic alkane, C11-C33 chain alkane with any one or more functional groups of hydroxyl, ester group, carbonyl and carboxyl, and C11-C33 cyclic alkane with any one or more functional groups of hydroxyl, ester group, carbonyl and carboxyl; the functional additive A is any one or combination of several of ethers, esters, alcohols and ketones; the functional assistant B is any one or combination of more of natural rubber, styrene-butadiene rubber, nitrile rubber, styrene rubber, vinyl chloride rubber, ethylene propylene diene monomer rubber, butyl rubber, butadiene rubber, isoprene rubber and chloroprene rubber. The surface treating agent can realize high-efficiency treatment for increasing the friction coefficient of the rubber surface, and has the characteristics of safety and environmental protection.

Description

Rubber surface treating agent, preparation method and rubber surface treatment process
Technical Field
The invention relates to the technical field of labor protection articles, in particular to a rubber surface treating agent, a preparation method and a rubber surface treating process.
Background
In the preparation of rubber gloves, it is generally required to develop a rubber glove having a textured surface in order to increase the coefficient of friction of the surface of the rubber glove, to improve the grip performance of the glove in use, or to enhance the aesthetic appearance. The current common methods include physical/mold embossing, chemical etching, coating, and organic solvent dipping.
The molding method is to produce the required lines on the surface of the glove. The method can obtain certain lines, but the lines are relatively single, if different lines are needed, different dies are needed, the method is inconvenient and high in cost, and the friction coefficient of the rubber gloves obtained by the common die method is not high.
The chemical corrosion method is to utilize acid or alkali with corrosion action to corrode the rubber surface to form a rough surface; however, the method is easy to damage rubber, difficult to accurately control the corrosion degree and avoid damaging the rubber which does not need to be deeply corroded, and simultaneously, the used acid and alkali are strong acid or strong alkali, so that the method has high danger and strong pollution and is easy to damage people.
The coating method is to coat a layer of resin or rubber on the surface of the manufactured rubber glove additionally, and a certain friction force is generated on the surface of the rubber glove. However, this method also has certain disadvantages: the problems of poor adhesion, coating layer falling and failure and the like are easily caused to rubber and coating materials. In addition, the shedding of the coating also limits the use of gloves in clean rooms.
The organic solvent impregnation method is to impregnate with an organic solvent having a strong swelling effect on the rubber to form a rough surface. The common organic solvent is polycyclic aromatic hydrocarbon, dimethylbenzene, methylbenzene and the like, and the dosage is very large, the volatility is high, the toxicity is high, and the environment-friendly requirement is not met.
Therefore, the currently used rubber surface treatment methods have a plurality of defects.
Disclosure of Invention
Technical problem to be solved
In view of the above disadvantages and shortcomings of the prior art, the present invention provides a surface treatment agent for rubber, which can achieve an efficient friction coefficient increasing treatment on the surface of rubber, and has the characteristics of safety and environmental protection. The invention also relates to a preparation method of the rubber surface treating agent and a process for performing rubber surface treatment by using the rubber surface treating agent.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
in a first aspect, the present invention provides a rubber surface treatment agent comprising the following components:
100 parts by mass of a main solvent; 3-20 parts of a coagulant; 1-15 parts of functional additive A; 0.1-5 parts of functional additive B;
the main solvent is a normal-temperature liquid organic matter, and is selected from any one or a combination of several of the following organic solvents: n-heptane, cycloheptane, C11-C33 chain alkane, C11-C33 cyclic alkane, C11-C33 chain alkane with any one or more functional groups of hydroxyl, ester group, carbonyl and carboxyl, and C11-C33 cyclic alkane with any one or more functional groups of hydroxyl, ester group, carbonyl and carboxyl;
the functional additive A is any one or a combination of several selected from ethers, esters, alcohols and ketones; the functional assistant B is any one or a combination of more of natural rubber, styrene-butadiene rubber, nitrile rubber, styrene rubber, vinyl chloride rubber, ethylene propylene diene monomer rubber, butyl rubber, butadiene rubber, isoprene rubber and chloroprene rubber.
It is stated that the main solvents listed above should satisfy the requirements of low volatility (boiling point of 100-200 ℃), no toxicity, no irritation, safety, no harm to human body, environmental protection, etc. as much as possible. The functional additive A is mainly used for improving the stability of a rubber surface treating agent system and reducing the volatility of the rubber surface treating agent system; the functional assistant B is mainly used for effectively increasing the roughness/friction coefficient of the rubber surface. The processing capacity of the rubber surface treating agent for increasing the roughness of the rubber surface is improved by combining two or more auxiliary agents with different functions.
Preferably, the functional assistant a may be, typically but not limited to: ethyl acetate, butyl acetate, phenyl acetate, methyl benzoate, diethylene glycol butyl ether, n-butanol, isoamyl alcohol, isooctyl alcohol, cyclohexanone, methyl isobutyl ketone; the functional assistant B may typically, but not limited to, be: styrene rubber, butadiene rubber, styrene butadiene rubber, nitrile butadiene rubber.
According to a preferred embodiment of the present invention, the coagulant is any one or a combination of organic acid, inorganic acid, organic base, inorganic base, monovalent soluble metal salt and divalent soluble metal salt. The solubility means solubility in a host solvent.
Specifically, the monovalent soluble metal salt and the divalent soluble metal salt include, but are not limited to, calcium chloride, magnesium chloride, zinc chloride, potassium chloride; such organic acids include, but are not limited to: acetic acid, propionic acid, benzoic acid; the inorganic acids include, but are not limited to, hydrochloric acid, phosphoric acid, sulfuric acid; such organic bases include, but are not limited to: amine compounds, nitrogen-containing heterocyclic compounds, alkali metal salts of alcohols (e.g., sodium methoxide, potassium ethoxide, potassium tert-butoxide); quaternary ammonium hydroxide salts, and the like. The inorganic bases include, but are not limited to: sodium hydroxide, potassium hydroxide, calcium hydroxide.
A certain amount of acid, alkali and metal salt are added into a main solvent to serve as a coagulant, so that the coagulation effect on latex can be achieved, the rapid coagulation and forming of the latex are promoted, the grains formed on the surface of the latex are treated by a rapid solidification surface treating agent, and the deformation in the subsequent processing process is prevented.
In a second aspect, the present invention also provides a method for preparing a rubber surface treatment agent, comprising:
s1 preparation of materials
Preparing 100 parts by mass of a main solvent, 3-20 parts by mass of a coagulant, 1-15 parts by mass of a functional additive A and 0.1-5 parts by mass of a functional additive B;
the main solvent is any one or a combination of several of the following organic solvents: n-heptane, cycloheptane, C11-C33 chain alkane, C11-C33 cyclic alkane, C11-C33 chain alkane with any one or more functional groups of hydroxyl, ester group, carbonyl and carboxyl, and C11-C33 cyclic alkane with any one or more functional groups of hydroxyl, ester group, carbonyl and carboxyl;
the functional additive A is any one or a combination of several selected from ethers, esters, alcohols and ketones; the functional assistant B is any one or a combination of more of natural rubber, styrene-butadiene rubber, nitrile rubber, styrene rubber, vinyl chloride rubber, ethylene propylene diene monomer rubber, butyl rubber, butadiene rubber, isoprene rubber and chloroprene rubber;
s2, modulation
Adding the functional assistant B into the main solvent, and stirring until the functional assistant B is completely dissolved; then, sequentially adding the coagulant and the functional assistant A, fully stirring, sealing and storing for later use.
Wherein, preferentially adding the functional additive B into the main solvent and stirring until the functional additive B is completely/fully dissolved, and then adding other materials, the following defects can be avoided:
if the main solvent, the functional additive A, the functional additive B and the coagulant are put into a stirring kettle together for stirring, on one hand, the dissolving efficiency of the functional additive B is seriously reduced; on the other hand, since the dissolution efficiency is reduced, in order to ensure that the functional additive B is sufficiently dissolved, the stirring time has to be prolonged, and a part of the main solvent/functional additive a is volatilized, and the volatilization degrees are different, so that an error occurs between the ratio of the rubber surface treatment agent and the preset ratio.
Preferably, in step S2, the functional agent B is added to the main solvent as rubber powder or fine particles, and the smaller the particle size of the functional agent B, the faster the dissolution.
Wherein, the stirring time after the coagulant and the functional assistant A are added is not longer, and is controlled within 5-30 min, so that excessive material volatilization is avoided.
In a third aspect, the present invention also provides a rubber surface treatment process, which comprises:
step 1: dipping the inner container blank into a pre-prepared latex rubber material, extracting, and throwing;
step 2: pre-filming the surface of the latex to solidify the surface of the latex to form a layer of film; then dipping the rubber surface treatment agent into the rubber surface treatment agent prepared by the method (dipping time is 1-5 s);
and step 3: drying for a period of time at low temperature, leaching, and then carrying out high-temperature vulcanization treatment to obtain the antiskid rubber product with the surface provided with the lines.
Preferably, in the step 1, the liner blank is a knitted, cotton or cotton wool liner blank. In a preferred embodiment, the liner blank is a glove liner blank. When the liner blank is a knitted liner blank, the liner blank is pre-impregnated with a coagulant before being impregnated with latex glue to prevent the latex glue from penetrating into the inner side of the liner blank.
Wherein the latex rubber compound is a natural latex rubber compound, a butyronitrile latex rubber compound, a butadiene-styrene latex rubber compound, a butyl latex rubber compound, a butadiene latex rubber compound, an isoprene rubber compound or a chloroprene rubber latex rubber compound.
Preferably, in step 2, the pre-filming treatment includes three steps of glue spreading, air blowing, and baking, and each process parameter is appropriately adjusted according to the current environmental temperature and humidity. The glue homogenizing time is 10-60 s, so that the surface of the rubber can not be damaged by wind. The blowing can be realized by a fan, preferably, the rotating speed of the fan is controlled to be 5-50 r/min, and the blowing time is 10-120 s. Wherein the drying temperature is 40-60 ℃, and the drying time is 10-120 s. The technological parameters in the three steps of gluing, blowing and baking are properly adjusted according to the current environmental temperature and humidity.
In the application, the glue throwing is that the hand mould drives the hand mould to vibrate for 2-3 times, so that the glue scraping is prevented from being uneven; the leaching is to put the rubber product which is baked for a period of time at low temperature into clean water for soaking and then immediately take out.
Preferably, in step 3, the low-temperature baking temperature is 60-100 ℃ and the time is 10-30 minutes. The drying temperature and time can enable the rubber layer to reach 6-8 g, dry and solidify, so that the damage of water to the rubber surface during the next step of leaching is avoided, and meanwhile, the damage of direct high temperature to the rubber surface is also avoided, the appearance defect of the product is caused, and the antiskid and other physical strength/mechanical properties are influenced. The high-temperature vulcanization treatment is preferably carried out under the conditions of 110-140 ℃ for 0.5-2 h.
The invention adopts the environment-friendly organic solvent to match with acid, alkali, salt and the like to prepare the treating agent which is cheap, environment-friendly, efficient and stable in preparation process, obtains the rubber product with excellent physical property and anti-skid property and uniform surface texture by improving the surface treatment process, and solves the problems of low production efficiency, poor physical property and anti-skid property, unsafety, environmental pollution and the like in the prior art.
(III) advantageous effects
The technical effects of the invention mainly comprise the following aspects:
(1) the main solvent in the rubber surface treating agent is an environment-friendly organic solvent which is low in volatility, non-toxic and harmless to human bodies, and because of the low volatility, the waste caused by volatilization in production is less, so that the cost is greatly saved; the paint does not contain highly toxic aromatic substances, and basically has no harm to human bodies; the flash point is higher, the lower limit value of the explosion limit is higher, and the safety coefficient in the use process is higher.
(2) The rubber surface treating agent is added with a certain amount of coagulant for promoting the coagulation of latex, when a rubber product is dipped in the rubber surface treating agent, the rubber surface can be rapidly shaped, the damage effect of the treating agent to the latex at a deeper position below the surface is avoided, and the rubber product with anti-skid performance and higher physical and mechanical performance is obtained; because of the coagulation promoting effect of the coagulant, the production efficiency can be improved, and the formation of uniform and stable lines on the surface of the rubber is facilitated.
(3) Adding a certain amount of functional additive A and functional additive B into a treating agent; the functional additive A is mainly used for improving the stability of a rubber surface treating agent system and reducing the volatility of the rubber surface treating agent system; the functional assistant B is mainly used for effectively increasing the roughness/friction coefficient of the rubber surface. The processing capacity of the rubber surface treating agent for increasing the roughness of the rubber surface is improved by combining two or more auxiliary agents with different functions.
(4) In the surface treatment process of the rubber product, after the inner container blank is soaked in the rubber material, the rubber is spun, then the pre-filming treatment is carried out, and then the rubber surface treating agent is soaked, and the inner container blank is dried and leached at low temperature. The pre-filming treatment comprises glue homogenizing and air blowing. The glue homogenizing is to stand to ensure that the flowing glue stock is redistributed under the gravity to achieve the effect of uniform glue hanging thickness, the viscosity of the glue stock is increased after the glue stock is homogenized, and then the air blowing treatment is carried out, so that the damage of the air blowing to the surface of the glue stock can be effectively avoided; and then, further drying for 10-20s at 40-60 ℃ to further evaporate water of the rubber material, and solidifying the rubber material on the surface of the latex to form a layer of film, so that the damage of the dipped rubber surface treating agent to the surface of the latex can be avoided (when a pre-film is not formed, if the surface treating agent is dipped, the dipped rubber surface treating agent can be impacted by the treating agent to cause non-uniformity, large wavy lines and even partial degumming). After the surface treatment agent is soaked, the latex component in the surface treatment agent can be adhered to the rubber surface, and then the surface treatment agent is dried and solidified for 6-8 min at 60-100 ℃ to avoid the damage of the rubber surface caused by water soaking (the components adhered to the rubber surface and not solidified are removed by leaching).
In conclusion, the novel safe, environment-friendly, low-cost and high-efficiency rubber surface treating agent is obtained, and can ensure higher mechanical property and uniformity of appearance lines of a rubber product while increasing the surface friction coefficient (for preparing an anti-skid product) of the rubber product.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention by way of specific embodiments thereof.
The invention provides a novel environment-friendly and safe rubber surface treating agent, which comprises the following components:
100 parts by mass of a main solvent, 3-20 parts by mass of a coagulant, 1-15 parts by mass of a functional additive A and 0.1-5 parts by mass of a functional additive B;
the main solvent is any one or a combination of several of the following organic solvents: n-heptane, cycloheptane, C11-C33 chain alkane, C11-C33 cyclic alkane, C11-C33 chain alkane with any one or more functional groups of hydroxyl, ester group, carbonyl and carboxyl, and C11-C33 cyclic alkane with any one or more functional groups of hydroxyl, ester group, carbonyl and carboxyl;
the functional additive A is any one or a combination of several selected from ethers, esters, alcohols and ketones; the functional assistant B is any one or a combination of more of natural rubber, styrene-butadiene rubber, nitrile rubber, styrene rubber, vinyl chloride rubber, ethylene propylene diene monomer rubber, butyl rubber, butadiene rubber, isoprene rubber and chloroprene rubber.
Wherein, the main solvent with the largest dosage is an environment-friendly organic solvent with low volatility, no toxicity and no harm to human body. The coagulant mainly plays a role in promoting the rapid solidification of the latex material in an emulsion state. The functional additive A is mainly used for improving the stability of a rubber surface treating agent system and reducing the volatility of the rubber surface treating agent system; the functional assistant B is mainly used for effectively increasing the roughness/friction coefficient of the rubber surface. A belongs to an intermediate solvent, so that other components of the treating agent system can be better dissolved mutually, the volatility is reduced, the stability of the system can be influenced by the too small dosage of A (the dispersion uniformity of each component is deteriorated), the viscosity of the system is increased by B, the volatility of the treating agent system can also be reduced, and meanwhile, the components can be remained on the surface of the glove after being dried, so that the anti-skidding effect is achieved.
The principle that the rubber surface treating agent of the present invention can form lines on the surface of rubber (uncured latex compound) mainly comprises three aspects: firstly, slight swelling effect of the main solvent and the functional auxiliary agent A (particularly the main solvent); secondly, the functional assistant B (rubber component) contained in the rubber surface treating agent is randomly attached to the surface of the latex and is partially vulcanized and coagulated with the former latex during the subsequent low-temperature drying. Then leaching to remove components which are not solidified with latex into a whole, washing, and then vulcanizing at high temperature to obtain the rubber product with the rough grain surface. Thirdly, the functional assistant B contained in the rubber surface treating agent can combine each component in the rubber surface treating agent, thereby improving the stability of a stable system and reducing the volatilization amount of the surface treating agent.
Different from the traditional organic solvent dipping method, the traditional organic solvent dipping method can only specifically select a plurality of organic solvents with strong swelling effect on rubber as main solvents of the surface treating agent, and the strong swelling organic solvents are generally high in toxicity and volatility, difficult to control the wrinkling degree of the surface treating agent on the rubber, and easily damage latex at deeper positions below the surface layer of the rubber, so that the produced wrinkled/anti-skid glove product has poor strength and durability. The invention does not rely on the strong swelling action of a large amount of main solvents, thereby greatly widening the optional range of the main solvents; in the application, the main solvent is mainly an environment-friendly and safe solvent which is low in toxicity or nontoxicity, low in volatility, low in pollution, easy to recover, high in flash point and high in lower limit value of explosion limit.
To further illustrate the technical effects of the present invention, the following description will be given with reference to specific examples.
Example 1
The embodiment provides a rubber glove surface treatment process, which comprises the following steps:
preparing materials in step (1):
preparing 100 parts by mass of C20-C33 chain alkane (main solvent), 10 parts by mass of acetic acid (coagulant), 6 parts by mass of ethyl acetate (functional assistant A) and 1 part by mass of styrene rubber (functional assistant B);
step (2): preparation of surface treatment agent
Adding styrene rubber into tridecane, and rapidly stirring for 20min until completely dissolving; sequentially adding acetic acid and ethyl acetate, stirring fully, sealing and storing for later use.
And (3): impregnation and surface treatment
Sleeving a 13-needle polyester glove blank on a glove mold, heating to 50 ℃, dipping the glove blank into a calcium chloride aqueous solution, taking out, moving the glove mold to a position above a glue tank containing natural latex glue stock (the glue stock comprises 100 parts by weight of natural latex, 1 part by weight of sulfur, 0.4 part by weight of ZDC, 0.6 part by weight of TT, 1 part by weight of zinc oxide and 3 parts by weight of sodium polyacrylate thickener), driving the glove blank to dip the glue once by the glove mold, spinning the glue, homogenizing the glue for 40s, blowing for 60s (the rotating speed of a fan is controlled at 25r/min), and drying at the temperature of 45 ℃ for 20 s; and (3) soaking the surface treating agent prepared in the step (2), drying for 15min at 80 ℃, then leaching, and then vulcanizing at a high temperature of 110 ℃ for 1.5h to obtain the anti-skid rubber gloves with the textures on the surfaces.
Example 2
The embodiment provides a rubber glove surface treatment process, which comprises the following steps:
preparing materials in step (1):
preparing 100 parts by mass of cycloheptane (a main solvent), 12 parts by mass of propionic acid (a coagulant), 8 parts by mass of diethylene glycol butyl ether (a functional additive A) and 1 part by mass of styrene rubber (a functional additive B);
step (2): preparation of surface treatment agent
Adding styrene rubber into cycloheptane, and rapidly stirring for 20min until completely dissolving; sequentially adding propionic acid and diethylene glycol monobutyl ether, fully stirring, sealing and storing for later use.
And (3): impregnation and surface treatment
Sleeving a 13-needle polyester glove blank on a glove mold, heating to 50 ℃, dipping the glove blank into a calcium chloride aqueous solution, taking out, moving the glove mold to a position above a glue tank containing natural latex glue stock (the glue stock comprises 100 parts by weight of natural latex, 1 part by weight of sulfur, 0.4 part by weight of ZDC, 0.6 part by weight of TT, 1 part by weight of zinc oxide and 3 parts by weight of sodium polyacrylate thickener), driving the glove blank to dip the glue for one time by the glove mold, spinning the glue, homogenizing the glue for 40s, blowing for 90s (the rotating speed of a fan is controlled at 40r/min), and drying at the temperature of 45 ℃ for 20 s; and (3) soaking the surface treating agent prepared in the step (2), drying for 15min at 80 ℃, then leaching, and then vulcanizing at a high temperature of 110 ℃ for 1.5h to obtain the anti-skid rubber gloves with the textures on the surfaces.
Example 3
The embodiment provides a rubber glove surface treatment process, which comprises the following steps:
preparing materials in step (1):
preparing 100 parts by mass of hexadecane chain alkane, 4 parts by mass of acetic acid (coagulant), 4 parts by mass of n-butanol (functional additive A) and 5 parts by mass of butadiene rubber (functional additive B);
step (2): preparation of surface treatment agent
Adding the cis-butadiene rubber into the hexadecane chain alkane, and quickly stirring for 20min until the cis-butadiene rubber is completely dissolved; sequentially adding acetic acid and n-butanol, stirring thoroughly, sealing and storing for use.
And (3): impregnation and surface treatment
Sleeving a 13-needle polyester glove blank on a glove mold, heating to 50 ℃, dipping the glove blank into a calcium chloride aqueous solution, taking out, moving the glove mold to a position above a glue tank containing natural latex glue stock (the glue stock comprises 100 parts by weight of natural latex, 1 part by weight of sulfur, 0.4 part by weight of ZDC, 0.6 part by weight of TT, 1 part by weight of zinc oxide and 3 parts by weight of sodium polyacrylate thickener), driving the glove blank to dip the glue once by the glove mold, spinning the glue, homogenizing the glue for 20s, blowing for 20s (the rotating speed of a fan is controlled at 25r/min), and drying at the temperature of 45 ℃ for 40 s; and (3) soaking the surface treating agent prepared in the step (2), drying for 15min at 80 ℃, then leaching, and then vulcanizing at a high temperature of 110 ℃ for 1.5h to obtain the anti-skid rubber gloves with the textures on the surfaces.
Example 4
The embodiment provides a rubber glove surface treatment process, which comprises the following steps:
preparing materials in step (1):
preparing 100 parts by mass of dodecane chain alkane, 20 parts by mass of acetic acid (coagulant), 12 parts by mass of ethyl acetate (functional additive A) and 3 parts by mass of butyl rubber (functional additive B);
step (2): preparation of surface treatment agent
Adding butyl rubber into the dodecane chain alkane, and quickly stirring for 30min until the butyl rubber is completely dissolved; sequentially adding acetic acid and ethyl acetate, stirring fully, sealing and storing for later use.
And (3): impregnation and surface treatment
Sleeving a 13-needle polyester glove blank on a glove mold, heating to 50 ℃, dipping the glove blank into a calcium chloride aqueous solution, taking out, moving the glove mold to a position above a glue tank containing natural latex glue stock (the glue stock comprises 100 parts of natural latex, 1 part of sulfur, 0.4 part of ZDC, 0.6 part of TT, 1 part of zinc oxide and 3 parts of sodium polyacrylate thickener), driving the glove blank to dip once, spin-coating for 30s, blowing for 30s (the rotating speed of a fan is controlled at 30r/min), and drying at 50 ℃ for 60 s; and (3) soaking the surface treating agent prepared in the step (2), drying for 15min at 75 ℃, then leaching, and then vulcanizing at a high temperature of 120 ℃ for 1h to obtain the anti-skid rubber gloves with the textures on the surfaces.
Example 5
The embodiment provides a rubber glove surface treatment process, which comprises the following steps:
preparing materials in step (1):
preparing 100 parts by mass of cycloheptane, 3 parts by mass of zinc chloride (coagulant), 15 parts by mass of n-hexanol (functional aid A) and 5 parts by mass of isoprene rubber (functional aid B);
step (2): preparation of surface treatment agent
Adding isoprene rubber into cycloheptane, and rapidly stirring for 25min until completely dissolving; adding zinc chloride and n-hexanol in sequence, stirring thoroughly, sealing and storing for use.
And (3): impregnation and surface treatment
Sleeving a 13-needle polyester glove blank on a glove mold, heating to 55 ℃, dipping the glove blank into a calcium chloride aqueous solution, taking out, moving the glove mold to a position above a rubber tank containing a natural latex rubber material (the rubber material composition is the same as that in example 1), driving the glove blank to dip the rubber for one time by the glove mold, throwing the rubber, homogenizing the rubber for 30s, blowing for 30s (the rotating speed of a fan is controlled at 30r/min), heating to 50 ℃, and heating for 50 s; and (3) soaking the surface treating agent prepared in the step (2), drying at 85 ℃ for 10min, then leaching, and then vulcanizing at 120 ℃ for 1.5h to obtain the anti-skid rubber gloves with the textures on the surfaces.
Example 6
In example 6, the functional additive B was changed to 3 parts by mass of nitrile rubber based on example 5.
Example 7
Example 7 is the same as example 1 except that the main solvent was changed to n-dodecanol.
Example 8
Example 8 is based on example 3, the coagulant is changed to benzoic acid.
Example 9
Example 9 is based on example 5, the functional assistant B is changed into natural rubber.
Example 10
Example 10 is based on example 1, the main solvent was changed to n-heptane.
In order to illustrate the technical effects of the present invention, the inventors also made a series of comparative examples by changing part of conditions on the basis of example 1, specifically as follows:
comparative example 1
Comparative example 1 is based on example 1, with only 6 parts by mass of ethyl acetate (functional aid a) remaining, and 1 part by mass of styrene rubber (functional aid B) removed.
Comparative example 2
Comparative example 2 is based on example 1, with only 1 part by mass of styrene rubber (functional aid B) remaining and 6 parts by mass of ethyl acetate (functional aid a) removed.
Comparative example 3
Comparative example 3 is based on example 1, except that the spin coating step.
Comparative example 4
Comparative example 4 is based on example 1 and the drying step prior to leaching was eliminated.
Comparative example 5
Comparative example 5 the preparation method of the treating agent was changed to that of example 1: adding the main solvent, the functional additive A, the functional additive B and the coagulant together, stirring and mixing uniformly.
The anti-slip natural rubber gloves prepared according to examples 1 to 10 and comparative examples 1 to 5 were subjected to abrasion resistance and friction coefficient tests:
1. the friction coefficient can be tested by referring to the standard GB10006-1988< Plastic film and sheet friction coefficient test method >, and the surface friction coefficient of the glove sample is tested by adopting a Labthink blue light MXD-02 friction coefficient instrument. The test procedure was as follows:
(1) 3 pieces of samples 8cm × 20cm and 100mm × 63mm were cut from the surface of the sample, and each glove formed 3 sets of samples. The test surface of the sample must not be touched by hand during the cutting process.
(2) One of the samples was taken at 8cm × 20cm, with the inner surface of the sample facing upward, and fixed on a horizontal test stand. A piece of 100mm by 63mm sample is taken, and the inner surface of the sample is exposed (namely, the outer surface is in direct contact with the slide block) and fixed on the slide block. In the process of fixing the sample, the test surface of the sample must not be touched by hand.
(3) The slide block is placed on a sample of a horizontal test bed without impact, so that a test system of the device is not stressed, and the test direction of the sample is parallel to the movement direction of the slide block.
(4) And setting parameter information such as test speed, test travel and the like, clicking a test option, starting the test, and starting relative motion after the two samples are static for 15 s.
(5) The device automatically records the force value change in the test process, and calculates the static friction coefficient and the dynamic friction coefficient of the sample.
(6) Repeating (2) - (5) until all 3 groups are tested, and averaging.
2. And testing the wear resistance according to the GA770-2008 chemical protective glove industry standard. The number of revolutions r represents the number of revolutions for which the test piece is worn through, and the larger the number of revolutions represents the better the wear resistance.
The test results are given in the following table:
abrasion resistance/r Wear resistance/h Coefficient of kinetic friction Coefficient of static friction Volatility Stability of the System
Example 1 1500~2000 18~23 0.209 0.227 In general Good taste
Example 2 1000~1500 18~23 0.206 0.222 In general Good taste
Example 3 1000~1500 15~20 0.223 0.243 Is low in In general
Example 4 1200~1600 18~23 0.201 0.219 Is low in Good taste
Example 5 1500~2000 18~25 0.231 0.253 Is low in Good taste
Example 6 1400~1800 18~25 0.218 0.236 Is low in Good taste
Example 7 1500~2000 18~23 0.208 0.226 In general Good taste
Example 8 1000~1500 15~20 0.221 0.240 Is low in In general
Example 9 1400~1800 18~23 0.224 0.245 Is low in Good taste
Example 10 1500~2000 18~23 0.202 0.224 In general Good taste
Comparative example 1 800~1200 15~20 0.178 0.196 Height of Difference (D)
Comparative example 2 1200~1600 18~24 0.192 0.210 In general Difference (D)
Comparative example 3 500~1200 8~12 0.165 0.177 In general Good taste
Comparative example 4 500~1200 8~12 0.168 0.180 In general Good taste
Comparative example 5 1000~1500 18~23 0.170 0.183 In general Difference (D)
From the above test results, it can be seen that:
wherein, the system stability of the rubber surface treating agent is mainly reduced by removing the functional additive A, so that the components in the treating agent are not uniformly dispersed, and the product quality is not stable. And the removal of the functional assistant B mainly causes the volatility of the rubber surface treating agent to be increased, the system stability to be poor, and the anti-skid property, the wear resistance and the wear resistance of a finished product to be reduced.
Wherein, the wear resistance and wearing resistance of the finished product are greatly reduced by removing the step of glue homogenizing or the step of drying before leaching; this is mainly due to the fact that the average value of the abrasion resistance test is reduced due to the fact that the thickness of the glue layer on the surface of the glove is very uneven, and the glove is easy to break firstly from the position where the glue layer is weak when the glove is worn and tested.
Wherein, if the main solvent, the functional additive A, the functional additive B and the coagulant are added together and stirred and mixed uniformly, the anti-skid performance of the finished product and the stability of the system are greatly reduced.
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 (10)

1. The rubber surface treating agent is characterized by comprising the following components:
100 parts by mass of a main solvent; 3-20 parts of a coagulant; 1-15 parts of functional additive A; 0.1-5 parts of functional additive B;
the main solvent is a normal-temperature liquid organic matter, and is selected from any one or a combination of several of the following organic solvents: n-heptane, cycloheptane, C11-C33 chain alkane, C11-C33 cyclic alkane, C11-C33 chain alkane with any one or more functional groups of hydroxyl, ester group, carbonyl and carboxyl, and C11-C33 cyclic alkane with any one or more functional groups of hydroxyl, ester group, carbonyl and carboxyl;
the functional additive A is any one or a combination of several selected from ethers, esters, alcohols and ketones; the functional assistant B is any one or a combination of more of natural rubber, styrene-butadiene rubber, nitrile rubber, styrene rubber, vinyl chloride rubber, ethylene propylene diene monomer rubber, butyl rubber, butadiene rubber, isoprene rubber and chloroprene rubber.
2. The rubber surface treatment agent according to claim 1, wherein the coagulating agent is any one or a combination of organic acid, inorganic acid, organic base, inorganic base, monovalent soluble metal salt and divalent soluble metal salt.
3. The preparation method of the rubber surface treating agent is characterized by comprising the following steps:
s1 preparation of materials
Preparing 100 parts by mass of a main solvent, 3-20 parts by mass of a coagulant, 1-15 parts by mass of a functional additive A and 0.1-5 parts by mass of a functional additive B;
the main solvent is any one or a combination of several of the following organic solvents: n-heptane, cycloheptane, C11-C33 chain alkane, C11-C33 cyclic alkane, C11-C33 chain alkane with any one or more functional groups of hydroxyl, ester group, carbonyl and carboxyl, and C11-C33 cyclic alkane with any one or more functional groups of hydroxyl, ester group, carbonyl and carboxyl;
the functional additive A is any one or a combination of several selected from ethers, esters, alcohols and ketones; the functional assistant B is any one or a combination of more of natural rubber, styrene-butadiene rubber, nitrile rubber, styrene rubber, vinyl chloride rubber, ethylene propylene diene monomer rubber, butyl rubber, butadiene rubber, isoprene rubber and chloroprene rubber;
s2, modulation
Adding the functional assistant B into the main solvent, and stirring until the functional assistant B is completely dissolved; then adding the coagulant and the functional assistant A, fully stirring, sealing and storing for later use.
4. The preparation method according to claim 3, wherein the stirring time after the coagulant and the functional additive A are added in S2 is controlled to be 5-30 min.
5. The method according to claim 3, wherein in S2, the functional assistant B is rubber powder or fine particles added to the main solvent.
6. A rubber surface treatment process is characterized by comprising the following steps:
step 1: dipping the inner container blank into a pre-prepared latex rubber material, extracting, and throwing;
step 2: pre-filming the surface of the latex to solidify the surface of the latex to form a layer of film; then dipping the rubber into the rubber surface treating agent prepared by the method;
and step 3: drying for a period of time at low temperature, leaching, and then carrying out high-temperature vulcanization treatment to obtain the antiskid rubber product with the surface provided with the lines.
7. The rubber surface treatment process according to claim 6, wherein in the step 1, the liner blank is a knitted, cotton or cotton wool liner blank.
8. The rubber surface treatment process of claim 6, wherein in step 1, the latex compound is a natural latex compound, a nitrile latex compound, a styrene-butadiene latex compound, a butyl latex compound, an isoprene latex compound or a chloroprene latex compound.
9. The rubber surface treatment process according to claim 6, wherein in the step 1 and the step 2, the pre-film forming treatment comprises three steps of glue homogenizing, air blowing and baking; wherein the glue homogenizing time is 10-60 s.
10. The rubber surface treatment process according to claim 6, wherein in the step 1, the low-temperature baking temperature is 60-100 ℃ and the time is 10-30 minutes.
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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB782520A (en) * 1955-01-26 1957-09-11 London Rubber Company Ltd Improvements in or relating to rubber gloves
US20160058921A1 (en) * 2013-06-03 2016-03-03 Robert Timothy Gros Antimicrobial examination gloves
CN106103554A (en) * 2014-03-26 2016-11-09 日本瑞翁株式会社 Dip-formed molding and the manufacture method of dip-formed molding
CN107200985A (en) * 2016-03-17 2017-09-26 广东裕田霸力科技股份有限公司 A kind of rubber surface inorganic agent and its production technology
CN108384079A (en) * 2018-02-27 2018-08-10 山东星宇手套有限公司 A kind of preparation method of nitrile rubber corrugation gloves
CN108433217A (en) * 2018-04-11 2018-08-24 山东星宇手套有限公司 A kind of preparation method of butyronitrile wig bubble slip-proof glove
CN108456342A (en) * 2018-02-13 2018-08-28 山东星宇手套有限公司 A kind of manufacturing method of imitative frosted gloves
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
CN111331768A (en) * 2020-04-01 2020-06-26 山东星宇手套有限公司 Preparation method of butyronitrile microcellular foam anti-slip gloves

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB782520A (en) * 1955-01-26 1957-09-11 London Rubber Company Ltd Improvements in or relating to rubber gloves
US20160058921A1 (en) * 2013-06-03 2016-03-03 Robert Timothy Gros Antimicrobial examination gloves
CN106103554A (en) * 2014-03-26 2016-11-09 日本瑞翁株式会社 Dip-formed molding and the manufacture method of dip-formed molding
CN107200985A (en) * 2016-03-17 2017-09-26 广东裕田霸力科技股份有限公司 A kind of rubber surface inorganic agent and its production technology
CN108456342A (en) * 2018-02-13 2018-08-28 山东星宇手套有限公司 A kind of manufacturing method of imitative frosted gloves
CN108384079A (en) * 2018-02-27 2018-08-10 山东星宇手套有限公司 A kind of preparation method of nitrile rubber corrugation gloves
CN108433217A (en) * 2018-04-11 2018-08-24 山东星宇手套有限公司 A kind of preparation method of butyronitrile wig bubble slip-proof glove
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
CN111331768A (en) * 2020-04-01 2020-06-26 山东星宇手套有限公司 Preparation method of butyronitrile microcellular foam anti-slip gloves

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