CN108451084B

CN108451084B - Preparation method of anti-collision gloves

Info

Publication number: CN108451084B
Application number: CN201810382532.4A
Authority: CN
Inventors: 周星余; 王垂文
Original assignee: SHANDONG XINGYU GLOVES CO Ltd
Current assignee: SHANDONG XINGYU GLOVES CO Ltd
Priority date: 2018-04-26
Filing date: 2018-04-26
Publication date: 2020-05-01
Anticipated expiration: 2038-04-26
Also published as: CN108451084A

Abstract

The invention relates to a preparation method of an anti-collision glove, which comprises the following steps: s1, dot beads on the back of the hand: and (4) scraping the back of the hand of the glove blank by using back bead glue. S2, foaming: and (4) heating and foaming the glove blank subjected to glue scraping and obtained in the step (S1). S3, vulcanization: and (5) vulcanizing the foamed glove blank obtained in the step (S2), and forming an anti-collision glue layer on the back of the hand of the glove blank to obtain the anti-collision glove. The hand back bead adhesive is prepared from the following raw materials in parts by mass: natural latex: 800-1200 parts; surfactant (b): 8-20 parts of a solvent; foaming agent: 10-50 parts; thickening agent: 15-60 parts. The foaming agent is one or more of sodium carbonate, sodium bicarbonate, benzenesulfonyl hydrazide, dinitrosopentamethyl tetramine and diazo phenyl aminobenzene. The anti-collision gloves prepared by the preparation method have excellent buffering performance, can be used for a long time and have a good anti-collision function.

Description

Preparation method of anti-collision gloves

Technical Field

The invention belongs to the technical field of labor protection products, and particularly relates to a method for manufacturing anti-collision gloves.

Background

The protective gloves are protective articles for preventing physical, chemical, biological and other external factors from hurting hands of workers in labor, are various in types, and have various functions of cutting resistance, electric insulation, water resistance, cold resistance, heat radiation resistance, fire resistance, flame retardance and the like besides chemical resistance. Wherein, crashproof gloves mainly used operating personnel need carry out the occasion of defense to external striking, when meetting the striking, and operating personnel generally utilizes the back of the hand to keep out in order to reach the purpose of defense. Therefore, when the protection against an impact is performed, the dorsum manus receives the impact force mainly, and it is very important to protect the dorsum manus portion of the human hand.

The prior common stainless steel wire gloves are adopted as the anti-collision gloves, although the gloves have partial anti-collision function, the stainless steel wires have poor elasticity, poor air permeability and hard texture, and the stainless steel wires are interwoven compactly, so the gloves have poor buffering performance, are easy to fatigue after being worn for a long time, have poor gripping force and are not suitable for being worn in workplaces with fine requirements.

In addition, the existing anti-collision gloves made by physical foaming have soft texture and good air permeability, and overcome many defects of the stainless steel wire gloves, but have poor buffering performance and cannot be used for a long time, so that the development of the anti-collision gloves which have more excellent buffering performance, can be used for a long time and have a good anti-collision function is urgently needed.

Disclosure of Invention

Technical problem to be solved

In order to solve the above problems in the prior art, the present invention provides a method for preparing an impact glove, which has excellent cushioning properties, can be used for a long time, and has a good impact-proof function.

(II) technical scheme

In order to achieve the purpose, the invention adopts the main technical scheme that:

the invention provides a preparation method of an anti-collision glove, which comprises the following steps: s1, dot beads on the back of the hand: scraping glue on the back of the hand of the glove blank by using back bead glue; s2, foaming: heating and foaming the glove blank subjected to glue scraping and obtained in the step S1; s3, vulcanization: vulcanizing the foamed glove blank obtained in the step S2 to form an anti-collision glue layer on the back of the hand of the glove blank to obtain an anti-collision glove; the hand back bead adhesive is prepared from the following raw materials in parts by mass: natural latex: 800-1200 parts; surfactant (b): 8-20 parts of a solvent; foaming agent: 10-50 parts; thickening agent: 15-60 parts; the foaming agent is one or more of sodium carbonate, sodium bicarbonate, benzenesulfonyl hydrazide, dinitrosopentamethyl tetramine and diazo phenyl aminobenzene.

According to the invention, the surfactant is one or more of sodium dodecyl benzene sulfonate, alkylphenol polyoxyethylene ether or peregal; the thickener is one or more of xerocin, sodium polyacrylate, and associated/non-associated acrylate.

According to the invention, the preparation method of the bead adhesive comprises the following steps: a1, pre-vulcanizing natural latex by adopting a vulcanization system to obtain pre-vulcanized latex; a2, adding a surfactant into the prevulcanized latex obtained in the step a1, and uniformly mixing; a3, adding a foaming agent into the mixed solution obtained in the step a2, and uniformly mixing; a4, adding a thickening agent into the mixed solution obtained in the step a3, and uniformly mixing to obtain the hand back point bead gel.

According to the invention, in step S2, the foaming temperature is 60-100 ℃, and the foaming time is 25-45 min; in step S3, the vulcanization temperature is 100-130 ℃ and the vulcanization time is 40-80 min.

According to the invention, before the step S1, the following steps for forming a protective adhesive layer on the palm surface are also included: s01, ball dots on palm surface: scraping the palm part of the glove blank by palm bead glue; s02, drying: and (5) drying the glove blanks subjected to glue scraping obtained in the step (S01), and forming a protective glue layer on the palm surface part of the glove blanks. The palm surface bead glue is prepared from the following raw materials in parts by mass: natural latex: 1000-1200 parts; thickening agent: 20-50 parts.

According to the invention, the preparation method of the palm surface bead glue comprises the following steps: b1, pre-vulcanizing the natural latex by adopting a vulcanization system to obtain pre-vulcanized latex; b2, adding a thickening agent into the prevulcanized latex obtained in the step b1, and uniformly mixing to obtain the palm point bead gel.

According to the invention, the following steps for forming the protective adhesive layer on the palm surface are also included after the step S3: s4, gum dipping: sleeving the glove blank obtained in the step S3 on a hand mold, heating the glove blank to 40-55 ℃ integrally, and then immersing the palm surface part of the glove blank into a coagulant, an impregnating adhesive and a wrinkling solution; s5, drying: and (4) vulcanizing the glove blank which is obtained in the step (S4) and is soaked with the glue at high temperature, and forming a protective glue layer on the palm part of the glove blank.

According to the invention, the impregnating adhesive is prepared from the following raw materials in parts by mass: natural latex: 1000-1200 parts; thickening agent: 20-50 parts.

According to the invention, the preparation method of the impregnating compound comprises the following steps: c 1: pre-vulcanizing the natural latex by adopting a vulcanization system to obtain pre-vulcanized latex; c 2: and c, adding the thickening agent into the prevulcanized latex obtained in the step c1, and uniformly mixing to obtain the dipping glue with the viscosity of 2000-4000 MPa & s.

According to the invention, the impregnating adhesive is prepared from the following raw materials in parts by mass: natural latex: 1000-1200 parts; foam stabilizer: 10-30 parts; thickening agent: 20-40 parts.

According to the invention, the preparation method of the impregnating compound comprises the following steps: d1, pre-vulcanizing the natural latex by adopting a vulcanization system to obtain pre-vulcanized latex; d2, adding a foam stabilizer into the prevulcanized latex obtained in the step d1, and uniformly mixing; d3, blowing air into the mixed solution obtained in the step d2, and uniformly mixing to control the foaming volume to be 1.1-1.5 times; d4, adding a thickening agent into the mixed solution obtained in the step b3, and uniformly mixing to obtain the dipping glue with the viscosity of 1500-3000 MPa & s.

According to the invention, the following steps for forming the protective adhesive layer on the palm surface are also included after the step S3: s4, gum dipping: sleeving the glove blank obtained in the step S3 on a hand mold, heating the glove blank to 40-55 ℃ integrally, then immersing the palm part of the glove blank into a coagulant, then immersing into the first dipping glue, and finally entering into the second dipping glue; s5, salt spraying: carrying out salt spraying treatment on the glove blank which is obtained in the step S4 and is soaked with the glue; s6, pre-baking: drying the glove blanks subjected to salt spraying and obtained in the step S5; s7, washing: washing the dried glove blanks obtained in the step S6 with water; s8, drying: and (4) vulcanizing the washed glove blank obtained in the step (S7) at high temperature to form a protective adhesive layer on the palm part of the glove blank.

According to the invention, the first-time impregnating adhesive is prepared from the following raw materials in parts by mass: latex: 1000-1200 parts; thickening agent: 20-40 parts of a solvent; the second-time impregnating adhesive is prepared from the following raw materials in parts by mass: latex: 1000-1200 parts; a stabilizer: 5-20 parts of a solvent; thickening agent: 20-40 parts of a solvent; wherein, the latex is one or the combination of more of pre-vulcanized natural latex, matched carboxylic acrylonitrile butadiene latex or matched chloroprene latex; the stabilizer is one or more of sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, peregal and polyoxyethylene ether.

According to the invention, the preparation method of the second-time impregnating adhesive comprises the following steps: e 1: adding a stabilizer into the latex and uniformly mixing; e 2: and (e) adding a thickening agent into the mixed solution obtained in the step e1, and uniformly mixing to obtain the second-time impregnating adhesive with the viscosity of 2000-3500 MPa & s.

(III) advantageous effects

The invention has the beneficial effects that:

according to the invention, the anti-collision rubber layer is formed on the back of the hand of the glove blank by adopting a chemical foaming agent for chemical foaming, the pre-vulcanized latex forms a compact protective film on the surface of the spot bead rubber on the back of the hand by adopting chemical foaming, and meanwhile, the foaming agent is decomposed by chemical foaming to generate gas which is sealed in the spot bead rubber on the back of the hand by the formed protective film, so that the gas is difficult to escape, and therefore, a complete buffer body is formed.

Detailed Description

For the purpose of better explaining the present invention, the present invention will be described in detail by way of specific embodiments for easy understanding.

Example 1

The embodiment provides a method for preparing an anti-collision glove, which specifically comprises the following steps:

s00, preparing hand back spot bead glue and palm surface spot bead glue.

Specifically, the preparation method of the hand back spot bead glue comprises the following steps:

a1, pre-vulcanizing 1000 parts of natural latex by adopting a sulfur vulcanization system to obtain pre-vulcanized latex. In the process, the natural latex particles are vulcanized inside, so that the natural latex is subjected to corresponding physical change and chemical change, and the physical and mechanical properties of the natural latex are improved. The swelling index (namely Q value, which represents the crosslinking degree, is higher and the crosslinking degree is lower) of the finally obtained pre-vulcanized latex is 5.2, the mechanical stability is more than 3000s, the viscosity reaches 95 MPa.s, the 300% stress at definite elongation reaches 1.0MPa, the tensile strength reaches 35MPa, and the elongation at break reaches 970%, so as to meet the process requirements. The specific pre-vulcanization process is the same as that in the prior art and is not described herein.

a2, adding 10 parts of alkylphenol polyoxyethylene ether to the prevulcanized latex obtained in the step a1, and uniformly mixing by stirring or shaking. The alkylphenol polyoxyethylene ether is used as the surfactant, and the alkylphenol polyoxyethylene ether has the main function of controlling the gelation degree of the prevulcanized latex in the subsequent foaming process (namely step S2), so that the gas generated by foaming is more uniformly distributed in the formed anti-collision rubber layer, the foaming is more uniform, the buffer performance of the manufactured anti-collision gloves is further improved, the damage to hands is less, and the gloves are more durable.

a3, adding 20 parts of benzenesulfonyl hydrazide to the mixed solution obtained in the step a2, and uniformly mixing by stirring or shaking. The benzene sulfonyl hydrazide is used as a foaming agent and is a chemical foaming agent, and in the subsequent foaming process, the foaming agent can be decomposed under heating to generate gas, so that the chemical foaming process is realized.

a4, adding 50 parts of associative acrylate into the mixed solution obtained in the step a3, and uniformly mixing the associative acrylate and the mixed solution by stirring or oscillation to obtain the hand back spot bead gel with the viscosity of 9500MPa & s. The associative acrylate is used as a thickener, so that the pre-vulcanized latex can reach a certain viscosity, and then the hand back bead dispensing glue can reach the required height on the glove blank when the hand back bead dispensing process is carried out subsequently (namely step S1), and the pre-vulcanized latex can be prevented from flowing, so that the required pattern is reached.

It should be noted that, when the back-hand bead filler is prepared, the raw materials are strictly added according to the adding sequence, that is, the surfactant, the foaming agent and the thickening agent are added into the pre-vulcanized latex, so that the foaming agent can be uniformly distributed in the pre-vulcanized latex, and the foaming process can be more uniform in the subsequent foaming process. Meanwhile, when the hand back bead adhesive is prepared, chemical reaction does not occur among the raw materials in the hand back bead adhesive, and only physical mixing is performed.

Further, the preparation method of the palm-surface point bead glue comprises the following steps:

and b1, pre-vulcanizing 1000 parts of natural latex by adopting a sulfur vulcanization system to obtain pre-vulcanized latex. The Q value of the finally obtained prevulcanized latex is 5.2, the mechanical stability is more than 2700s, the viscosity reaches 88 MPa.s, the stress at definite elongation reaches 1.0MPa, the tensile strength reaches 32MPa, and the elongation at break reaches 950 percent so as to meet the process requirements.

b2, adding 30 parts of xerophthalein into the prevulcanized latex obtained in the step b1, and uniformly mixing the mixture by stirring or shaking to obtain the palm-surface point bead gel with the viscosity of 2400MPa · s. The xerophthalein is used as a thickener mainly for achieving the required viscosity of the prevulcanized latex, so that the palm bead glue can achieve the required height on the glove blank when the palm bead dispensing process (namely step S01) is carried out subsequently, and the prevulcanized latex can be prevented from flowing so as to achieve the required pattern. It should be noted that, when preparing the palm-surface bead glue, the raw materials in the palm-surface bead glue do not react chemically, but are merely mixed physically.

S01, ball dots on palm surface: and (3) sleeving the glove blank on a hand at room temperature (22-26 ℃), and scraping the palm part of the glove blank by adopting the palm spot bead glue prepared in the step S00 for 2 times, wherein the scraping time is 10S. Specifically, get into the pearl production line with gloves embryo cover back on the hand former, some pearl production line is equipped with the point pearl hole of arranging according to certain array including the point pearl board that is located the hand former top on the point pearl board, glues above-mentioned point pearl and pours into the point pearl board after and carry out the frictioning, then can form on the gloves embryo with the big or small assorted point pearl in point pearl hole, the shape and the size in specific point pearl hole are decided according to actual need.

S02, drying: and (4) drying the glove blank subjected to glue scraping obtained in the step (S01) in a drying box at the drying temperature of 75 ℃ for 30min to form a protective glue layer (specifically, a palm bead protective glue layer) on the palm part of the glove blank. Specifically, the main effect of here stoving is to get rid of moisture, and then makes the protection glue film design, can reach certain intensity. The protective glue layer formed by adopting the raw materials and the method has good air permeability and soft texture, and is not easy to fatigue after being worn for a long time.

S1, dot beads on the back of the hand: and (3) at room temperature (22-26 ℃), turning the glove blank with the protective adhesive layer obtained in the step S02, then sleeving the glove blank on a hand mold, and scraping the back of the hand of the glove blank by using the back of the hand bead glue prepared in the step S00 for 2 times, wherein the scraping time is 12S.

S2, foaming: and (4) placing the glove blank subjected to the glue scraping in the step (S1) into a drying oven for heating and foaming, wherein the foaming temperature (namely the temperature in the drying oven) is 85 ℃, and the foaming time is 35 min.

Specifically, the process is chemical foaming, in the process, the pre-vulcanized latex in the bead glue on the back of the hand is heated, the moisture in the pre-vulcanized latex can run out, the pre-vulcanized latex forms gel, a compact protective film is further formed on the surface of the bead glue on the back of the hand, and the surfactant can enable the pre-vulcanized latex to be more uniform in gel in the process. With the increase of the heating time, the foaming agent is decomposed to generate gas when reaching the decomposition temperature, and the gas is more uniformly distributed in the spot-gluing glue on the back of the hand under the action of the surfactant. Because the gas is sealed in the protective film by the compact protective film, the gas is not easy to escape, so that a complete buffer body is formed, and even if the gas is impacted, the gas sealed in the protective film cannot escape, so that the buffer performance is greatly enhanced, and the anti-collision function is improved.

S3, vulcanization: and (5) vulcanizing the foamed glove blank obtained in the step (S2) in a drying box at the vulcanization temperature of 120 ℃ for 70min, and forming an anti-collision glue layer on the back of the hand of the glove blank after vulcanization. Specifically, the vulcanization process is to further deepen the crosslinking degree among molecular chains on the basis of pre-vulcanized latex (including pre-vulcanized latex in palm point bead rubber and pre-vulcanized latex in back point bead rubber), water is lost under heating in the process, the pre-vulcanized latex is demulsified, and is a post-crosslinking reaction among the molecular chains and is performed more thoroughly, so that the performance is enhanced.

Further, after the step S3, an anti-collision glue layer is formed on the back of the hand of the glove blank. Compare with the anticollision glue film that adopts the physics foaming to make among the prior art, anticollision glue film among the current is because of adopting the physics foaming to form, and the intraformational gas of anticollision glue is not sealed in the protective film, consequently, when receiving the impact force, gaseous will run out, and the deformation volume of anticollision glue film is great, and consequently the shock-absorbing capacity is weaker, can not use for a long time, and the injury to the people hand also can be great moreover. And the anticollision glue film in this embodiment adopts chemical foaming to form, contains fine and close protection film in this anticollision glue film and is sealed at the inside gas of anticollision glue film by the protection film, consequently, the gas also can not run out when receiving the impact force, has strengthened shock-absorbing capacity greatly, has improved anticollision function, and is littleer to the injury of people's hand, and is more durable. From this, the crashproof gloves that finally make form the crashproof glue film in back of the hand part, and form the protection glue film in the face of a palm part, possess the function of anticollision and protection simultaneously.

Example 2

s00, preparing hand back spot bead glue and palm surface spot bead glue.

a1, precuring 800 parts of natural latex by adopting a thiuram vulcanization system to obtain precured latex. The Q value of the finally obtained prevulcanized latex is 5.5, the mechanical stability is more than 2000s, the viscosity reaches 75 MPa.s, the 300 percent stress at definite elongation reaches 0.95MPa, the tensile strength reaches 28MPa, and the elongation at break reaches 800 percent so as to meet the process requirements.

a2, adding 8 parts of sodium dodecylbenzenesulfonate to the prevulcanized latex obtained in the step a1, and uniformly mixing them by stirring or shaking.

a3, adding 10 parts of sodium bicarbonate into the mixed solution obtained in the step a2, and uniformly mixing the mixture by stirring or shaking.

a4, adding 15 parts of xerophthalein into the mixed solution obtained in the step a3, and uniformly mixing by stirring or shaking to obtain the hand back spot bead gel with the viscosity of 8000MPa s.

b1, pre-vulcanizing 1000 parts of natural latex by adopting a thiuram vulcanization system to obtain pre-vulcanized latex. The Q value of the finally obtained prevulcanized latex is 5.4, the mechanical stability is more than 2000s, the viscosity reaches 75 MPa.s, the stress at definite elongation reaches 0.95MPa, the tensile strength reaches 25MPa, and the elongation at break reaches 700 percent so as to meet the process requirements.

b2, adding 20 parts of sodium polyacrylate into the prevulcanized latex obtained in the step b1, and uniformly mixing the mixture by stirring or shaking to obtain the palm surface point bead gel with the viscosity of 1000MPa s.

S01, ball dots on palm surface: and (3) sleeving the glove blank on a hand at room temperature (22-26 ℃), and scraping the palm part of the glove blank by adopting the palm spot bead glue prepared in the step S00 for 1 time, wherein the scraping time is 8S.

S02, drying: and (5) drying the glove blank subjected to glue scraping obtained in the step (S01) in a drying box at the drying temperature of 60 ℃ for 35min to form a protective glue layer on the palm surface of the glove blank.

S1, dot beads on the back of the hand: and (3) at room temperature (22-26 ℃), turning the glove blank with the protective adhesive layer obtained in the step S02, then sleeving the glove blank on a hand mold, and scraping the back of the hand of the glove blank by using the back of the hand bead glue prepared in the step S00 for 1 time, wherein the scraping time is 8S.

S2, foaming: and (4) placing the glove blank subjected to the glue scraping in the step (S1) into a drying oven for heating and foaming, wherein the foaming temperature (namely the temperature in the drying oven) is 60 ℃, and the foaming time is 25 min.

S3, vulcanization: and (5) vulcanizing the foamed glove blank obtained in the step (S2) in a drying box at the vulcanization temperature of 100 ℃ for 40min, and forming an anti-collision glue layer on the back of the hand of the glove blank after vulcanization. From this, the crashproof gloves that finally make form the crashproof glue film in back of the hand part, and form the protection glue film in the face of a palm part, possess the function of anticollision and protection simultaneously.

Example 3

s00, preparing hand back spot bead glue and palm surface spot bead glue.

a1, precuring 950 parts of natural rubber latex by a resin vulcanization system to obtain precured rubber latex. The Q value of the finally obtained prevulcanized latex is 5.0, the mechanical stability is more than 3200s, the viscosity reaches 80 MPa.s, the 300 percent stress at definite elongation reaches 0.99MPa, the tensile strength reaches 30MPa, and the elongation at break reaches 880 percent so as to meet the process requirement.

a2, 6 parts of sodium dodecylbenzenesulfonate and 9 parts of peregal are added to the prevulcanized latex obtained in step a1, and mixed well by stirring or shaking.

a3, adding 20 parts of sodium carbonate and 15 parts of benzenesulfonylhydrazide to the mixed solution obtained in the step a2, and uniformly mixing them by stirring or shaking.

a4, adding 12 parts of xerophthalein and 18 parts of sodium polyacrylate into the mixed solution obtained in the step a3, and uniformly mixing by stirring or shaking to obtain the hand back bead gel with the viscosity of 10000MPa s.

b1, pre-vulcanizing 1100 parts of natural latex by adopting a resin vulcanization system to obtain pre-vulcanized latex. The Q value of the finally obtained prevulcanized latex is 5.0, the mechanical stability is more than 3000s, the viscosity reaches 80 MPa.s, the stress at definite elongation reaches 0.98MPa, the tensile strength reaches 28MPa, and the elongation at break reaches 800 percent so as to meet the process requirements.

b2, adding 30 parts of associative acrylate into the prevulcanized latex obtained in the step b1, and uniformly mixing the associative acrylate and the prevulcanized latex by stirring or oscillation to obtain the palm surface point bead gel with the viscosity of 1400MPa & s.

S01, ball dots on palm surface: and (3) sleeving the glove blank on a hand at room temperature (22-26 ℃), and scraping the palm part of the glove blank by adopting the palm spot bead glue prepared in the step S00 for 2 times, wherein the scraping time is 8S.

S02, drying: and (5) drying the glove blanks subjected to glue scraping obtained in the step (S01) in a drying box at the drying temperature of 75 ℃ for 34min to form a protective glue layer on the palm surface of the glove blanks.

S1, dot beads on the back of the hand: and (3) at room temperature (22-26 ℃), turning the glove blank with the protective adhesive layer obtained in the step S02, then sleeving the glove blank on a hand mold, and scraping the back of the hand of the glove blank by using the back of the hand bead glue prepared in the step S00 for 2 times, wherein the scraping time is 10S.

S2, foaming: and (5) placing the glove blank subjected to the glue scraping in the step (S1) into a drying oven for heating and foaming, wherein the foaming temperature (namely the temperature in the drying oven) is 80 ℃, and the foaming time is 30 min.

S3, vulcanization: and (5) vulcanizing the foamed glove blank obtained in the step (S2) in a drying box at the vulcanization temperature of 110 ℃ for 50min, and forming an anti-collision glue layer on the back of the hand of the glove blank after vulcanization. From this, the crashproof gloves that finally make form the crashproof glue film in back of the hand part, and form the protection glue film in the face of a palm part, possess the function of anticollision and protection simultaneously.

Example 4

s00, preparing hand back spot bead glue and palm surface spot bead glue.

a1, pre-vulcanizing 1100 parts of natural latex by adopting a sulfur vulcanization system to obtain pre-vulcanized latex. The Q value of the finally obtained prevulcanized latex is 4.8, the mechanical stability is more than 3500s, the viscosity reaches 90 MPa.s, the 300 percent stress at definite elongation reaches 1.2MPa, the tensile strength reaches 32MPa, and the elongation at break reaches 950 percent so as to meet the process requirements.

a2, adding 10 parts of alkylphenol polyoxyethylene ether and 10 parts of peregal to the prevulcanized latex obtained in the step a1, and mixing them uniformly by stirring or shaking.

a3, 41 parts of diazophenylaminobenzene are added to the mixed solution obtained in step a2 and mixed uniformly by stirring or shaking.

a4, adding 42 parts of non-associative acrylate into the mixed solution obtained in the step a3, and uniformly mixing the non-associative acrylate and the mixed solution by stirring or oscillation to obtain the hand back spot bead gel with the viscosity of 12000MPa & s.

b1, pre-vulcanizing 1100 parts of natural latex by adopting a thiuram vulcanization system to obtain pre-vulcanized latex. The Q value of the finally obtained prevulcanized latex is 4.8, the mechanical stability is more than 3200s, the viscosity reaches 85 MPa.s, the stress at definite elongation reaches 1.0MPa, the tensile strength reaches 34MPa, and the elongation at break reaches 850 percent so as to meet the process requirement.

b2, adding 35 parts of non-associative acrylate into the prevulcanized latex obtained in the step b1, and uniformly mixing the mixture by stirring or oscillation to obtain the palm surface point bead gel with the viscosity of 2500MPa & s.

S01, ball dots on palm surface: and (3) sleeving the glove blank on a hand at room temperature (22-26 ℃), and scraping the palm part of the glove blank by adopting the palm spot bead glue prepared in the step S00 for 2 times, wherein the scraping time is 10S.

S02, drying: and (5) drying the glove blank subjected to glue scraping obtained in the step (S01) in a drying box at the drying temperature of 85 ℃ for 40min to form a protective glue layer on the palm surface part of the glove blank.

S2, foaming: and (4) placing the glove blank subjected to the glue scraping in the step (S1) into a drying oven for heating and foaming, wherein the foaming temperature (namely the temperature in the drying oven) is 90 ℃, and the foaming time is 38 min.

S3, vulcanization: and (5) vulcanizing the foamed glove blank obtained in the step (S2) in a drying box at the vulcanization temperature of 120 ℃ for 60min, and forming an anti-collision glue layer on the back of the hand of the glove blank after vulcanization. From this, the crashproof gloves that finally make form the crashproof glue film in back of the hand part, and form the protection glue film in the face of a palm part, possess the function of anticollision and protection simultaneously.

Example 5

s00, preparing hand back spot bead glue and palm surface spot bead glue.

a1, precuring 1200 parts of natural rubber latex by adopting a thiuram vulcanization system to obtain precured rubber latex. The Q value of the finally obtained prevulcanized latex is 5.0, the mechanical stability is more than 4000s, the viscosity reaches 100 MPa.s, the 300 percent stress at definite elongation reaches 1.3MPa, the tensile strength reaches 40MPa, and the elongation at break reaches 1000 percent so as to meet the process requirements.

a2, adding 18 parts of peregal to the prevulcanised latex obtained in step a1 and mixing them homogeneously by stirring or shaking.

a3, adding 50 parts of dinitrosopentamethylenetetramine to the mixed solution obtained in the step a2, and uniformly mixing by stirring or shaking.

a4, adding 60 parts of sodium polyacrylate into the mixed solution obtained in the step a3, and uniformly mixing by stirring or shaking to obtain the hand back spot bead gel with the viscosity of 15000MPa · s.

b1, pre-vulcanizing 1200 parts of natural latex by adopting a resin vulcanization system to obtain pre-vulcanized latex. The Q value of the finally obtained prevulcanized latex is 5.5, the mechanical stability is more than 3500s, the viscosity reaches 90 MPa.s, the stress at definite elongation reaches 1.1MPa, the tensile strength reaches 38MPa, and the elongation at break reaches 900 percent so as to meet the process requirements.

b2, adding 24 parts of xerophthalein and 26 parts of sodium polyacrylate into the prevulcanized latex obtained in the step b1, and uniformly mixing by stirring or shaking to obtain the palm-surface point bead glue with the viscosity of 3000MPa s.

S01, ball dots on palm surface: and (3) sleeving the glove blank on a hand at room temperature (22-26 ℃), and scraping the palm part of the glove blank by adopting the palm spot bead glue prepared in the step S00 for 3 times, wherein the scraping time is 12S.

S02, drying: and (5) drying the glove blanks subjected to glue scraping obtained in the step (S01) in a drying box at the drying temperature of 100 ℃ for 38min to form a protective glue layer on the palm surface of the glove blanks.

S1, dot beads on the back of the hand: and (3) at room temperature (22-26 ℃), turning the glove blank with the protective glue layer obtained in the step S02, then sleeving the glove blank on a hand mold, and scraping the back of the hand of the glove blank by using the back of the hand bead glue prepared in the step S00 for 3 times, wherein the scraping time is 15S.

S2, foaming: and (4) placing the glove blank subjected to the glue scraping in the step (S1) into a drying oven for heating and foaming, wherein the foaming temperature (namely the temperature in the drying oven) is 100 ℃, and the foaming time is 45 min.

S3, vulcanization: and (5) vulcanizing the foamed glove blank obtained in the step (S2) in a drying box at the vulcanization temperature of 130 ℃ for 80min, and forming an anti-collision glue layer on the back of the hand of the glove blank after vulcanization. From this, the crashproof gloves that finally make form the crashproof glue film in back of the hand part, and form the protection glue film in the face of a palm part, possess the function of anticollision and protection simultaneously.

Example 6

The embodiment provides a method for manufacturing an anti-collision glove, which is different from embodiment 1 mainly in that a protective adhesive layer is formed on a palm surface, the protective adhesive layer finally formed on the palm surface in embodiment 1 is a palm surface bead protective adhesive layer, and the protective adhesive layer formed on the palm surface in this embodiment is a latex wrinkle protective adhesive layer, specifically as follows:

s00, preparing the glue for dispensing the beads on the back of the hand and the dipping glue.

Specifically, the preparation method of the above-mentioned back-of-hand bead glue is the same as that of embodiment 1, and is not repeated herein. The preparation method of the palm face impregnating adhesive comprises the following steps:

and c1, pre-vulcanizing 1000 parts of natural latex by adopting a sulfur vulcanization system to obtain pre-vulcanized latex.

c2, adding 30 parts of xerophthalein into the prevulcanized latex obtained in the step b1, and uniformly mixing the mixture by stirring or shaking to obtain the dipping glue with the viscosity of 2400MPa · s. In the preparation of the dipping glue, the raw materials in the dipping glue are not chemically reacted with each other, but are physically mixed.

S1, dotting beads on the back of the hand, S2, foaming, S3, and vulcanizing, specifically, the process of S1, S2, and S3 is the same as the process of S1, S2, and S3 in example 1, and is not repeated herein. After step S3, an anti-collision glue layer is formed on the back of the hand of the glove blank.

S4, gum dipping: and (4) turning over the glove blank with the anti-collision glue layer obtained in the step (S3) and sleeving the glove blank on a hand mold of a dipping production line (namely, one side with the dotted beads is placed on the back of the hand), heating the whole glove blank (namely, the hand mold and the glove blank) to 50 ℃, and then dipping the palm part (namely, dipping the side without the dotted beads). Specifically, the palm surface part is firstly soaked in a coagulant for 30 seconds, after the liquid is homogenized, the palm surface part is soaked in the soaking glue prepared in the step S00 for 3 minutes, and after the glove soaked in the soaking glue is subjected to glue homogenizing treatment, the palm surface part is finally soaked in a wrinkling liquid for 2 seconds.

The viscosity of the dipping glue is smaller than that of the back spot bead glue of the hand, so that the whole of the hand and the glove blank is heated firstly, the dipping glue can be prevented from seeping (namely seeping into yarns of the glove blank), and meanwhile, the process requirement of the temperature required by volatilization of components in the coagulant after the subsequent dipping into the coagulant can be met by heating the whole of the hand and the glove blank. The coagulant is a calcium nitrate methanol solution (namely a solution prepared from calcium nitrate and methanol according to a mass ratio of 2: 100) with the mass fraction of 2%, and the coagulant is mainly used for gelling the prevulcanized latex in the dipping glue in the dipping process so as to prevent the prevulcanized latex from permeating into the glove blank. The wrinkling liquid is a kerosene, toluene and acetic acid solution (namely a solution prepared from the kerosene, the toluene and the acetic acid according to the mass ratio of 30:70: 15) with the mass fraction of 15%, and the effect of the wrinkling liquid is mainly to enable impregnated glue to form patterns, so that an uneven surface is formed, and the anti-skid effect is achieved.

S5, drying: and (4) putting the glove blank which is obtained in the step (S4) and is soaked with the rubber into a drying box for high-temperature vulcanization, wherein the high-temperature vulcanization temperature is 100 ℃, the high-temperature vulcanization time is 60min, and a protective rubber layer (specifically a latex wrinkle protective rubber layer) is formed on the palm surface part of the glove blank.

Specifically, in the drying process, on one hand, moisture is removed, and on the other hand, the prevulcanized latex in the dipping glue is vulcanized in the later period, so that the cross-linking degree between molecular chains is deeper, and thus, the protective glue layer formed on the palm surface by the dipping glue can only achieve the required protective function. The protective glue layer formed by adopting the raw materials and the method has good air permeability and soft texture, and is not easy to fatigue after being worn for a long time. Therefore, the finally prepared anti-collision gloves form an anti-collision rubber layer on the back of the hand, form a latex wrinkle protection rubber layer on the palm surface, and have the functions of anti-collision and protection.

Example 7

The embodiment provides a method for manufacturing an anti-collision glove, which is different from embodiment 1 mainly in that a protective adhesive layer is formed on a palm surface, in embodiment 1, the protective adhesive layer finally formed on the palm surface is a palm surface bead protective adhesive layer, and in this embodiment, the protective adhesive layer formed on the palm surface is a latex foam protective adhesive layer, specifically as follows:

s00, preparing a back spot bead glue and a palm surface dipping glue.

d1, pre-vulcanizing 1000 parts of natural latex by adopting a sulfur vulcanization system to obtain pre-vulcanized latex.

d2, adding 10 parts of potassium oleate to the prevulcanised latex obtained in step d1 and mixing them homogeneously by stirring or shaking. The potassium oleate is used as a foam stabilizer, and has the main function of stabilizing the foam in the subsequent process of blowing air for physical foaming (i.e. step d3), so as to stabilize the physical foaming system and further ensure the uniformity of the foaming system. Specifically, since the process of step d3 is a continuous operation, after the air is blown, one bubble is formed in the mixed solution, and the bubble is converged and generated from small to large and is merged after a long time operation, and the bubble floats upwards and is discharged after being merged, thereby affecting the foaming speed and uniformity. The foam stabilizer can play a role of stabilizing the foam to stabilize the foam, so that the volume time of the foam maintaining hole body is longer, the foam is prevented from being discharged in an upward floating manner due to the foam generation phenomenon, the foaming speed is increased, the required foaming volume is quickly reached, and the foam is more uniform.

d3, blowing air into the mixed solution obtained in the step d2, and uniformly mixing the mixture through rapid stirring, wherein the foaming volume is controlled to be 1.3 times.

d4, adding 20 parts of dried rosmarin into the mixed solution obtained in the step b3, and uniformly mixing the mixture by stirring or shaking to obtain the immersion glue with the viscosity of 2200MPa s.

It should be noted that, when the dipping glue is prepared, the raw materials are added in the above adding order strictly, that is, the foam stabilizer is added into the pre-vulcanized latex firstly, then air is blown into the pre-vulcanized latex for physical foaming, and finally the thickener is added, so that the raw materials are mixed more uniformly and the foaming is more uniform. Meanwhile, when the impregnating adhesive is prepared, chemical reaction does not occur among the raw materials in the impregnating adhesive, and only physical mixing is performed.

S4, gum dipping: and (5) turning the glove blank with the anti-collision glue layer obtained in the step (S3), sleeving the glove blank on a hand mold of a dipping production line, heating the whole glove blank to 50 ℃, and dipping the palm part. Specifically, the palm part is firstly soaked in the coagulant for 20S, then soaked in the soaking glue prepared in the step S00 for 1min, and finally soaked in the wrinkling solution for 1S after the glove soaked with the soaking glue is subjected to glue homogenizing treatment. Wherein, the coagulant is a calcium nitrate methanol solution (namely a solution prepared by calcium nitrate and methanol according to the mass ratio of 3: 100) with the mass fraction of 3%, and the wrinkling solution is a kerosene and acetic acid solution (namely a solution prepared by kerosene and acetic acid according to the mass ratio of 8: 1) with the mass fraction of 12.5%.

S5, drying: and (4) putting the glove blank which is obtained in the step (S4) and is soaked with the rubber into a drying box for high-temperature vulcanization, wherein the high-temperature vulcanization temperature is 80 ℃, the high-temperature vulcanization time is 40min, and a protective rubber layer (specifically a latex foaming protective rubber layer) is formed on the palm surface part of the glove blank. From this, the crashproof gloves that finally make form the crashproof glue film in back of the hand part, and form latex foaming protection glue film in the palm part, possess the function of anticollision and protection simultaneously.

Example 8

The embodiment provides a method for manufacturing an anti-collision glove, which is different from embodiment 1 mainly in that a protective adhesive layer is formed on a palm surface, the protective adhesive layer finally formed on the palm surface in embodiment 1 is a palm surface bead protective adhesive layer, and the protective adhesive layer formed on the palm surface in this embodiment is a latex frosted protective adhesive layer, specifically as follows:

s00, preparing hand back bead glue, first dipping glue and second dipping glue.

Specifically, the preparation method of the above-mentioned back-of-hand bead glue is the same as that of embodiment 1, and is not repeated herein. The preparation method of the first-pass impregnating compound comprises the following steps:

30 parts of cellulose is added to 1000 parts of pre-vulcanized natural latex and the mixture is uniformly mixed by stirring or shaking to obtain the primary impregnating compound with the viscosity of 2000 MPa.s.

The preparation method of the second-time impregnating adhesive comprises the following steps:

e 1: 10 parts of sodium dodecylbenzenesulfonate is added to 1000 parts of prevulcanized natural rubber latex (hereinafter referred to as prevulcanized rubber latex) and uniformly mixed by stirring or shaking. The sodium dodecyl benzene sulfonate is used as a stabilizer, and the sprayed salt is a cation during subsequent salt spraying treatment, so that the emulsion breaking of the prevulcanized latex is easy to realize, and the later salt spraying treatment is greatly influenced. Therefore, the emulsion breaking speed of the prevulcanized latex can be relieved after the stabilizer is added, namely the coagulation speed of the prevulcanized latex is relieved, so that the salt sprayed during later salt spraying can be better sprayed on the surface of the subsequent second dipping glue.

e 2: and (3) adding 30 parts of sodium polyacrylate into the mixed solution obtained in the step e1, and uniformly mixing the sodium polyacrylate and the mixed solution by stirring or shaking to obtain the second-time impregnating adhesive with the viscosity of 3000MPa & s.

It should be noted that, because the viscosity of the solution is higher after the thickener is added, the raw materials are added in the above adding order strictly when preparing the second dipping glue, that is, the stabilizer is added in the prevulcanized latex first, and the thickener is added finally, so that the mixing can be more uniform. Meanwhile, when the second-time impregnating adhesive is prepared, chemical reaction does not occur among raw materials of the second-time impregnating adhesive, and only physical mixing is performed.

S4, gum dipping: and (4) turning the glove blank with the anti-collision glue layer obtained in the step (S3), sleeving the glove blank on a hand mold of a dipping production line, heating the whole glove blank (namely the hand mold and the glove blank) to 50 ℃, and dipping the palm part (namely dipping the side without the dotted beads). Specifically, the palm surface part is firstly soaked in the coagulant for 30S, then soaked in the first soaking glue prepared in the step S00 for 3min, the glove soaked in the first soaking glue is subjected to glue homogenizing treatment, and finally soaked in the second soaking glue for 2 min. Wherein the coagulant is a calcium chloride aqueous solution with the mass fraction of 10% (namely a solution prepared by calcium chloride and water according to the mass ratio of 10: 100).

In the dipping process, the first dipping glue may be dipped first and then the second dipping glue, or only the second dipping glue may be dipped. After subsequent salt spraying treatment, for example, when physical salt spreading is adopted, the second dipping glue is easily damaged by physical impact, and then the glove blank is easily subjected to water seepage or oil seepage to fail to play a good protection role, so that the first dipping glue is dipped firstly and then the second dipping glue is dipped, the phenomenon can be well avoided after the second dipping glue is dipped, and a good protection role can be played. The first impregnation step here serves primarily as a protective function, and the second impregnation step here serves primarily as a slip-resistant function.

S5, salt spraying: and (4) performing salt spraying treatment on the glove blanks soaked with the glue obtained in the step (S4), wherein the sprayed salt is sodium chloride. Any conventional salt spraying means can be adopted for the salt spraying treatment, and a salt layer is formed on the surface of the second-time dipping glue after the salt spraying treatment. Since the sprayed salt is an oxygen ion, the precured latex is gelled during the salt spraying.

S6, pre-baking: and (5) drying the glove blanks subjected to salt spraying and obtained in the step (S5) in a drying box at the drying temperature of 80 ℃ for 30 min. In the pre-drying process, a part of water in the second-time impregnating adhesive and the first-time impregnating adhesive which are subjected to gelling and have salt layers sprayed on the surfaces is removed, so that the second-time impregnating adhesive and the first-time impregnating adhesive after gelling reach certain strength, and the second-time impregnating adhesive and the first-time impregnating adhesive are prevented from being broken in subsequent water washing.

S7, washing: and (4) putting the dried glove blanks obtained in the step (S6) into a water pool for water washing, wherein the water washing temperature (namely the temperature of water in the water pool) is 40 ℃, and the water washing time is 35 min. After water washing, the salt layer on the second dipping glue is washed off, so that honeycomb-shaped pits are formed on the surface of the second dipping glue, and the anti-skid function can be achieved.

S8, drying: and (4) putting the washed glove blanks obtained in the step (S7) into a drying box for high-temperature vulcanization, wherein the high-temperature vulcanization temperature is 100 ℃, the high-temperature vulcanization time is 60min, and a protective adhesive layer (specifically, a latex frosted protective adhesive layer) is formed on the palm surface part of the glove blanks.

Specifically, in the drying process, on one hand, moisture is removed, and on the other hand, the prevulcanized latex in the first dipping glue and the second dipping glue is vulcanized in the later period, so that the cross-linking degree between molecular chains is deeper, and thus, a protective glue layer formed on the palm surface by the first dipping glue and the second dipping glue can reach the required strength, and a certain protective function is achieved. The protective glue layer formed by adopting the raw materials and the method has good air permeability and soft texture, and is not easy to fatigue after being worn for a long time. From this, the last crashproof gloves that make forms the crashproof glue film in back of the hand part, and forms latex dull polish protection glue film in the face part, possesses the function of anticollision and protection simultaneously.

The pressure test is carried out on the side, with the anti-collision vibration rubber layer, of each of the anti-collision gloves prepared in the embodiments 1 to 5, and the pressure required for the deformation of the side, with the anti-collision rubber layer, of each of the gloves is respectively as follows: example 1 was 26N, example 2 was 28N, example 3 was 24N, example 4 was 30N, example 5 was 33N, example 6 was 26N, example 7 was 26N, and example 8 was 26N. And adopt among the prior art to use physical foaming to make the anti-collision gloves of the anti-collision rubber layer that the point pearl was glued and was formed and carry out same pressure test, the result discovery, the anti-collision gloves that adopt physical foaming to make in the current just begin to take place deformation when receiving pressure to be 16N, the contrast also can be seen from this, the anti-collision rubber layer that adopts chemical foaming method to form in this embodiment possesses more excellent shock-absorbing capacity, and then the anticollision performance is better, and the injury is littleer to the people hand, and is more durable.

Of course, the present invention is not limited to the above-mentioned embodiments, and in step S00, the mass parts of the raw materials of the back hand bead filler are preferably 800 to 1200 parts of natural rubber latex, 8 to 20 parts of surfactant, 10 to 50 parts of foaming agent, and 15 to 60 parts of thickening agent. The foaming agent is preferably one or more of sodium carbonate, sodium bicarbonate, benzenesulfonyl hydrazide, dinitrosopentamethylenetetramine and diazo-phenyl aminobenzene, the surfactant is preferably one or more of sodium dodecyl benzene sulfonate, alkylphenol polyoxyethylene ether or peregal, and the thickener is preferably one or more of sodium xerophthalein, sodium polyacrylate and associated/non-associated acrylate. A large number of experimental studies show that when the mass parts of the raw materials of the bead bond on the back of the hand are in the range, the finally formed anti-collision glue layer has the best buffering performance.

In the method for preparing the back bead filler, in step a1, the vulcanization system used for precuring the natural rubber latex is preferably a sulfur vulcanization system, a thiuram vulcanization system or a resin vulcanization system, but may be other vulcanization systems depending on the actual production requirements. The Q value of the obtained prevulcanized latex is preferably 4.8-5.5, the mechanical stability is preferably more than 2000-4000 s, the viscosity is preferably 75-100 MPa-s, the 300% stress at definite elongation is preferably 0.95-1.3 MPa, the tensile strength is preferably 28-40 MPa, and the elongation at break is preferably 800-1000%. A large number of experimental researches show that when the performance of the pre-vulcanized latex reaches the range, the finally formed anti-collision rubber layer has the best buffer performance, and the specific performance value is determined according to the actual production requirement. In the step a4, the viscosity of the finally formed bead-dispensing glue is preferably 8000-15000 MPa · s.

In step S1, the number of times of scraping is preferably 1-3, and the scraping time is preferably 8-15S, although the number of times of scraping and the scraping time may be adjusted according to actual production needs, and is not strictly limited. In step S2, the foaming temperature is preferably 60 to 100 ℃, and more preferably 80 to 90 ℃, and the chemical foaming is more uniform within this temperature range. The foaming time is preferably 25-45 min. In step S3, the vulcanization temperature is preferably 100 to 130 ℃, and more preferably 110 to 120 ℃, and the cushion performance of the crosslinked anti-collision glue layer is the best in this temperature range. The vulcanization time is preferably 40-80 min.

The protective adhesive layer formed on the palm surface part of the glove blank is preferably a palm surface bead protective adhesive layer, a latex wrinkle protective adhesive layer, a latex foam protective adhesive layer or a latex frosted protective adhesive layer, and of course, other types of protective adhesive layers can be selected according to actual needs.

When the palm bead protection glue layer is formed on the palm surface as in examples 1 to 5, the mass parts of the raw materials of the palm bead glue are preferably 1000 to 1200 parts of natural latex and 20 to 50 parts of thickening agent. Among them, the thickener is preferably one or a combination of more of sodium hydroxide, sodium polyacrylate, and associative/non-associative acrylates. A large number of experimental studies show that when the mass parts of the raw materials of the palm surface bead glue are in the range, the finally formed protective glue layer has the best performance.

In the process for producing palm-size beads, in step b1, the vulcanization system used for precuring the natural rubber latex is preferably a sulfur vulcanization system, a thiuram vulcanization system or a resin vulcanization system, but may be another vulcanization system depending on the actual production requirements. The Q value of the obtained prevulcanized latex is preferably 4.8-5.5, the mechanical stability is preferably more than 2000-3500 s, the viscosity is preferably 75-90 MPa-s, the 300% stress at definite elongation is preferably 0.95-1.1 MPa, the tensile strength is preferably 25-38 MPa, and the elongation at break is preferably 700-900%. A large number of experimental researches show that when the performance of the pre-vulcanized latex reaches the range, the finally formed protective adhesive layer has the best performance, and the specific performance value is determined according to the actual production requirement. In the step b2, the viscosity of the finally formed bead filler is preferably 1000 to 3000MPa · s.

In step S01, the number of times of scraping is preferably 1-3, and the scraping time is preferably 8-12S, although the number of times of scraping and the scraping time may be adjusted according to actual production needs, and is not strictly limited. In step S02, the drying temperature is preferably 60-100 ℃, and the drying time is preferably 30-40 min. In addition, when the anti-collision gloves with palm surfaces forming the palm surface bead-dotted protective adhesive layers are prepared, beads can be dotted on the back parts of the hands at first, then beads can be dotted on the palm surface parts, and the specific operation sequence is determined according to actual production needs.

When the latex wrinkle-preventing glue layer is formed on the palm surface as in example 6, the mass parts of the raw materials of the dipping glue are preferably natural latex: 1000-1200 parts of a thickening agent: 20-50 parts. Wherein, the thickening agent is preferably one or the combination of more of sodium hydroxide, sodium polyacrylate, cellulose or sodium carboxymethyl cellulose. In the preparation method of the impregnating compound, in the step c1, any one of the existing vulcanization systems can be adopted as the vulcanization system. In the step c2, the viscosity of the finally formed impregnating adhesive is preferably 2000-4000 MPa.s.

In step S4, the temperature of the glove blank and the hand mold is preferably heated to 40 to 55 ℃, the dipping time for dipping into the coagulant is preferably 15 to 60S, the dipping time for dipping into the dipping glue is preferably 1 to 5min, and the dipping time for dipping into the wrinkling solution is preferably 1 to 3S, within this range, the performance of the finally formed protective glue layer is optimal. The coagulant is preferably a mixed solution prepared by combining one or more of methanol, ethanol or water with one or more of calcium nitrate, calcium chloride or zinc chloride, and the creping fluid is preferably a mixed solution prepared by combining one or more of kerosene, toluene, gasoline or chloroform with one or more of acetic acid, oxalic acid or benzoic acid. In step S5, the high-temperature vulcanization temperature is preferably 80 to 130 ℃, and more preferably 100 to 110 ℃. The high-temperature vulcanization time is preferably 40-80 min.

When the latex foam protective rubber layer is formed on the palm surface as in example 7, the mass parts of the raw materials of the dipping rubber are preferably natural latex: 1000-1200 parts of a foam stabilizer: 10-30 parts of a thickening agent: 20-40 parts. Wherein, the foam stabilizer is preferably one or the combination of potassium oleate, potassium ricinoleate or alkyl aryl sulfonate, and the thickener is preferably one or the combination of sodium xerophthalmia, sodium polyacrylate, cellulose or sodium carboxymethylcellulose. In the preparation method of the impregnating compound, in step d1, any one of the existing vulcanization systems can be used as the vulcanization system. In the step d3, the foaming volume is preferably controlled to be 1.1 to 1.5 times, and in the step d4, the viscosity of the finally formed impregnating adhesive is preferably 1500 to 3000MPa · s.

When the latex frosted protective adhesive layer is formed on the palm surface as in example 8, the mass parts of the raw materials of the first-pass dipping adhesive are preferably latex: 1000-1200 parts; thickening agent: 20-40 parts. The mass parts of the raw materials of the second dipping glue are preferably latex: 1000-1200 parts; a stabilizer: 5-20 parts of a solvent; thickening agent: 20-40 parts of a solvent; the viscosity of the finally formed primary impregnating adhesive is preferably 600-3000 MPa-s. The latex is one or a combination of a plurality of pre-vulcanized natural latex, compounded carboxylated nitrile latex (namely vulcanized carboxylated nitrile latex, a vulcanizing agent is added into the carboxylated nitrile latex for mixing to prepare the latex, any one of the conventional manners can be adopted in the specific vulcanization process) or compounded chloroprene latex (namely vulcanized chloroprene latex, a vulcanizing agent is added into the chloroprene latex for mixing to prepare the latex, any one of the conventional manners can be adopted in the specific vulcanization process), the stabilizer is one or a combination of a plurality of sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, peregal and polyoxyethylene ether, and the thickener is preferably one or a combination of a plurality of xerophthalein, sodium polyacrylate and associated/non-associated acrylate. In the preparation method of the second-time impregnating adhesive, in the step e2, the viscosity of the finally formed second-time impregnating adhesive is preferably 2000-3500 MPa · s.

In step S4, the temperature of the glove blank and the hand mold is preferably heated to 40 to 55 ℃, the dipping time for dipping into the coagulant is preferably 15 to 60S, the dipping time for dipping into the first dipping glue is preferably 1 to 5min, and the dipping time for dipping into the second dipping glue is preferably 1 to 5min, within this range, the performance of the finally formed protective glue layer is optimal. The coagulant is preferably a mixed solution prepared by combining one or more of methanol, ethanol or water with one or more of calcium nitrate, calcium chloride or zinc chloride. In step S5, the salt sprayed is preferably sodium chloride or sodium nitrate. In step S6, the drying temperature is preferably 50-100 ℃, and the drying time is preferably 20-40 min. In step S7, the water washing temperature is preferably 35-50 ℃ and the water washing time is 30-80 min. In step S8, the temperature of the high-temperature vulcanization is preferably 80-130 ℃, and the high-temperature vulcanization time is preferably 40-80 min.

In conclusion, in the embodiment, the anti-collision rubber layer is formed on the back of the hand of the glove blank by a chemical foaming method using a chemical foaming agent, the pre-vulcanized latex is enabled to form a compact protective film on the surface of the bead rubber on the back of the hand by chemical foaming, meanwhile, the foaming agent is decomposed by the chemical foaming agent to generate gas and is sealed in the bead rubber on the back of the hand by the formed protective film, and the gas is not easy to escape, so that a complete buffer body is formed, even if the gas is impacted, the gas sealed in the protective film cannot escape, therefore, the buffer performance of the anti-collision glove is greatly enhanced, the anti-collision function of the back of the hand is improved, the back of the hand is protected from being injured by impact, the injury to the hands is smaller, and. Meanwhile, a protective rubber layer (comprising a palm bead protective rubber layer, a latex wrinkle protective rubber layer, a latex foam protective rubber layer or a latex frosted protective rubber layer) is formed on the palm part of the glove blank, and the glove blank has an excellent protective function, improves the gripping force and the protective force, has good air permeability and soft texture, and is not easy to fatigue after being worn for a long time.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention in any way, so that any person skilled in the art can make modifications or changes in the technical content disclosed above. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.

Claims

1. The preparation method of the anti-collision gloves is characterized by comprising the following steps:

s1, dot beads on the back of the hand: scraping glue on the back of the hand of the glove blank by using back bead glue;

s2, foaming: heating and foaming the glove blank subjected to glue scraping and obtained in the step S1, wherein the foaming temperature is 60-100 ℃, and the foaming time is 25-45 min;

s3, vulcanization: vulcanizing the foamed glove blank obtained in the step S2 to form an anti-collision glue layer on the back of the hand of the glove blank to obtain the anti-collision glove;

the adhesive strength of the bead adhesive on the back of the hand is 8000-15000 MPa & s, and the adhesive is prepared from the following raw materials in parts by mass:

natural latex: 800-1200 parts;

surfactant (b): 8-20 parts of a solvent;

foaming agent: 10-50 parts;

thickening agent: 15-60 parts;

the foaming agent is one or the combination of more of sodium carbonate, sodium bicarbonate, benzenesulfonyl hydrazide, dinitrosopentamethylenetetramine and diazo-phenyl aminobenzene; when the hand back bead dispensing glue is prepared, the raw materials in the hand back bead dispensing glue do not react chemically, and only are physically mixed;

the preparation method of the hand back bead glue comprises the following steps:

a1, pre-vulcanizing the natural latex by adopting a vulcanization system to obtain pre-vulcanized latex;

a2, adding the surfactant into the prevulcanized latex obtained in the step a1 and uniformly mixing;

a3, adding the foaming agent into the mixed solution obtained in the step a2, and uniformly mixing;

a4, adding the thickening agent into the mixed solution obtained in the step a3, and uniformly mixing to obtain the hand back spot bead glue.

2. The method of making an impact glove of claim 1,

the surfactant is one or more of sodium dodecyl benzene sulfonate, alkylphenol polyoxyethylene ether or peregal;

the thickening agent is one or a combination of more of sodium hydroxide, sodium polyacrylate and associated/non-associated acrylate.

3. The method of making an impact glove of claim 1,

in step S3, the vulcanization temperature is 100-130 ℃, and the vulcanization time is 40-80 min.

4. The method for preparing an impact-resistant glove according to claim 1, further comprising the following step for forming a protective adhesive layer on the palm surface before step S1:

s01, ball dots on palm surface: scraping the palm part of the glove blank by adopting palm bead glue;

s02, drying: drying the glove blanks subjected to glue scraping obtained in the step S01, and forming the protective glue layer on the palm surface part of the glove blanks;

the palm surface bead adhesive is prepared from the following raw materials in parts by mass:

natural latex: 1000-1200 parts;

thickening agent: 20-50 parts.

5. The method for preparing an impact-resistant glove according to claim 1, further comprising the following steps for forming a protective adhesive layer on the palm surface after step S3:

s4, gum dipping: sleeving the glove blank obtained in the step S3 on a hand mold, heating the glove blank to 40-55 ℃ integrally, and then immersing the palm surface part of the glove blank into a coagulant, an impregnating adhesive and a wrinkling solution;

s5, drying: and (4) vulcanizing the glove blank which is obtained in the step (S4) and is soaked with the glue at a high temperature, and forming the protective glue layer on the palm surface part of the glove blank.

6. The method of making an impact glove of claim 5 wherein,

the impregnating adhesive is prepared from the following raw materials in parts by mass:

natural latex: 1000-1200 parts;

thickening agent: 20-50 parts.

7. The method of making an impact glove of claim 5 wherein,

natural latex: 1000-1200 parts;

foam stabilizer: 10-30 parts;

thickening agent: 20-40 parts.

8. The method for preparing an impact-resistant glove according to claim 1, further comprising the following steps for forming a protective adhesive layer on the palm surface after step S3:

s4, gum dipping: sleeving the glove blank obtained in the step S3 on a hand mold, heating the glove blank to 40-55 ℃ integrally, then immersing the palm surface part of the glove blank into a coagulant, then immersing into the first dipping glue, and finally entering into the second dipping glue;

s5, salt spraying: carrying out salt spraying treatment on the glove blank which is obtained in the step S4 and is soaked with the glue;

s6, pre-baking: drying the glove blanks subjected to salt spraying and obtained in the step S5;

s7, washing: washing the dried glove blanks obtained in the step S6 with water;

s8, drying: and (5) carrying out high-temperature vulcanization on the washed glove blank obtained in the step (S7), and forming the protective adhesive layer on the palm part of the glove blank.

9. The method of making an impact glove of claim 8,

the first-time impregnating adhesive is prepared from the following raw materials in parts by mass:

latex: 1000-1200 parts;

thickening agent: 20-40 parts of a solvent;

the second-time impregnating adhesive is prepared from the following raw materials in parts by weight:

latex: 1000-1200 parts;

a stabilizer: 5-20 parts of a solvent;

thickening agent: 20-40 parts of a solvent;

wherein the latex is one or the combination of more of pre-vulcanized natural latex, matched carboxylic acrylonitrile butadiene latex or matched chloroprene latex;

the stabilizer is one or a combination of more of sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, peregal and polyoxyethylene ether.