CN100563982C - The manufacture method of butadiene acrylonitrile rubber medical gloves - Google Patents
The manufacture method of butadiene acrylonitrile rubber medical gloves Download PDFInfo
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- CN100563982C CN100563982C CNB2004100777399A CN200410077739A CN100563982C CN 100563982 C CN100563982 C CN 100563982C CN B2004100777399 A CNB2004100777399 A CN B2004100777399A CN 200410077739 A CN200410077739 A CN 200410077739A CN 100563982 C CN100563982 C CN 100563982C
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Abstract
The invention discloses a kind of manufacture method of butadiene acrylonitrile rubber medical gloves, may further comprise the steps: the A. sizing material is prepared: mix two kinds of acrylonitrile-butadiene rubber latex, the mixed volume ratio is 30: 70～70: 30; B. sizing material is carried out presulfurization; C. moulding; D. sulfuration; E. surface treatment.The present invention mixes NBR latex as raw material by adopting, by adjusting material rate, improved concrete parameter and the technical process in the production process, make the butyronitrile medical rubber glove pliability of producing good, stress at definite elongation is low, breaking strength is good, making product both can be used for general industry uses, can be used for medical examination again uses, reach the related request of natural rubber medical gloves standard GB 7543-1996 fully, can be used in the medical operating occasion, dress comfortablely, it is good to have intensity simultaneously, and ageing-resistant performance is better, wear-resisting, solvent resistance is good, many advantages such as oil resistivity is good.
Description
Technical field
The present invention relates to the manufacture method of rubber gloves, relate in particular to the manufacturing of butadiene acrylonitrile rubber medical gloves.
Background technology
Acrylonitrile butadiene glove can not cause allergic phenomena because of it does not contain protein, simultaneously its oil resistivity, anti-solvent, ageing resistance is compared than natural rubber latex gloves has clear superiority.The report and the document of domestic production technology to acrylonitrile butadiene glove rare report, especially butadiene acrylonitrile rubber medical gloves do not appear in the newspapers.And existing butyronitrile gloves practices well mainly is to be raw material with single acrylonitrile-butadiene rubber latex, carry out presulfurization by adding a certain amount of presulfurization agent, utilize ion to accept method and carry out the glued membrane moulding, and through after the conventional molding procedure, gloves demolding is made, no powder product carries out also that conventional upset, chlorination, bubble are washed, rinsing process, and the part technology also by add nutrient solution in product, makes gloves play nutrition health-care functions to skin.The pliability of the conventional acrylonitrile butadiene glove of producing in the prior art is low, and stress at definite elongation is big, the long-term very easily fatigue of dressing.These technology can only limit to butyronitrile gloves to be used for industrial scale, and portioned product also can only be used as medical examination.
Summary of the invention
The object of the present invention is to provide that a kind of pliability is good, stress at definite elongation is low, breaking strength good, can be applicable to the acrylonitrile butadiene glove of medical operating occasion.
In order to realize the foregoing invention purpose, the present invention has adopted following technical scheme:
A kind of manufacture method of butadiene acrylonitrile rubber medical gloves may further comprise the steps:
A. sizing material is prepared: mix two kinds of acrylonitrile-butadiene rubber latex, the mixed volume ratio is 30: 70～70: 30, and the content of acrylonitrile differs 3%～10% in two kinds of acrylonitrile-butadiene rubber latex;
B. sizing material is carried out presulfurization, the proportioning of presulfurization agent is: 1～5% KOH, 0.5～2.0% sulphur, 0.6～3.0% ZnO, 0～1.5% ZDC, 0～1.0% BZ, 0.6～2.5% titanium dioxide;
C. moulding;
D. sulfuration;
E. surface treatment.
The present invention mixes NBR latex as raw material by adopting; by adjusting material rate, having improved concrete parameter and the technical process in the production process; make the butyronitrile medical rubber glove pliability of producing good; stress at definite elongation is low, and breaking strength is good, makes product both can be used for general industry and uses; can be used for medical examination again uses; even can be used in the medical operating occasion, the long-term use is difficult for feeling tired, uses in multiple occasion and all can play good isolation effect and protective effect.
As shown in Figure 1, the rubber gloves of producing for the present invention and the rubber gloves of prior art production are in the comparison aspect the stress at definite elongation.As seen, use the butadiene acrylonitrile rubber medical gloves that the inventive method is produced, its 300% stress at definite elongation is less than 3MPa, reach the requirement of natural rubber medical gloves, the gloves particularly soft reaches the related request of natural rubber medical gloves standard GB 7543-1996 fully, dresses comfortable, many advantages such as it is good to have intensity simultaneously, and ageing-resistant performance is better, wear-resisting, solvent resistance is good, oil resistivity is good.
Figure of description
Fig. 1 is product and the existing product comparison diagram aspect the power that extends surely that the present invention produces.
The specific embodiment
1. the preparation of dispersant and related reagent
The preparation of solution such as protective agent casein, dispersing agent NNO, stabilizing agent potassium hydroxide, surfactant and emulsifying agent Heveatex gloves compound method is routinely carried out, and general concentration requirement is:
A, protective agent casein, dispersing agent NNO are 10-20%,
B, stabilizing agent, emulsifying agent, surfactant concentration are 20%-25%.
2. dispersion preparation
The main dispersion of using in the body series is: sulphur (S), zinc oxide (ZnO), promoter ZDC, accelerant B Z, brightening agent TiO2 etc.
The preparation of dispersion requires to adopt ball mill or sand mill to grind, and wherein sulphur (S) must carry out ball milling, and the ball milling time, general the requirement reached more than 72 hours, and the ball grinder rotating speed is generally at 100 ± 10 rev/mins.
Other material all can use sand mill to grind, and the sand milling time requires 500-700 rev/min of sand mill turn up generally at 8-12 hour; Require to carry out cooling processing in the sand grinding process.Requirement must add a certain amount of protective agent, diffusant and soft water in the ball milling of each material or sand grinding process; Siccative (supposition dispersion siccative is 100 parts) protective agent, diffusant and soft water consumption require to be controlled at respectively 2～4 parts, 2～3 parts and 50-80 part relatively.Dispersion must be carried out the test of aspects such as settling amount, granularity before coming into operation, and can come into operation after qualified.Require among the present invention under dry rubber content is 100 parts situation, promoter ZDC and BZ to be carried out mixed grinding in 0.2～0.6 and 0.3～0.7 ratio respectively, and be no more than 1 part ratio with total amount and add in the sizing material.
3. the preparation of sizing material
The preparation of lay special stress on sizing material among the present invention, requirement must be simultaneously that two specific characters are different acrylonitrile-butadiene rubber latex mix to use, and the content of acrylonitrile differs 3%～10% in two kinds of latex, under this condition, can be with two kinds of latex with 30～70: 70～30 ratio be mixed and is used, and concrete ratio is decided on the difference of acrylonitrile content.
In the present embodiment 6311 NBR latexes of the NK220 NBR latex of Japan with the SYNTHMER of Britain were mixed with 50: 50, can obtain good effect.
4. latex presulfurization proportioning
It is different and change that the materials of auxiliary material are looked the latex place of production and weather in the latex presulfurization, generally speaking: with 100 parts in dried glue is radix, and it is that 0.5～2.0 part, ZnO are that 0.6～3.0 part, ZDC are that 0～1.5 part, BZ are that 0～1.0 part, titanium dioxide are 0.5～2.5 part that KOH is generally 1～5 part, sulphur.The content of preferred accelerators ZDC of the present invention and BZ is for being respectively 0.2 and 0.4.
5. coagulating agent preparation
Among the present invention if with the aqueous solution of calcium nitrate as coagulating agent, can add a certain amount of wetting agent (as the flower king) and interleaving agent (as calcium carbonate etc.) in case of necessity, require when wherein calcium nitrate prepares and to be diluted with water to about 25%～35% also start stirrings in the calcium nitrate elder generation impouring jar, again with being steam heated to more than 95 ℃, dissolve and clarify more than 5 hours, can use by weight (or thickness) the requirement dilution of product then.
6. basic charging process
In sizing material suction in proportion (or impouring) the earlier vulcanizing tank that respectively two kinds of need is mixed, and it is fully mixed, add quantitative stabilizing agent (20%KOH) then to pH value 9～10.5, adding stirrings such as the vulcanizing agent grind, promoter, brightening agent, pigment then respectively made it even more than 4 hours, leave standstill more than 8 hours and can use, must not surpass 10 days but this material period of storage is the longest, temperature preferably is no more than 35 ℃ before using, the highest must not be above 45 ℃.
7. production process
All finish and deal with problems arising from an accident and to produce at every raw material and batching, be main production equipments with the automatic impregnating line in the production process, utilize ion to accept in the coagulating agent that method is immersed in the ceramic hand-mold of cleaning 50 ℃～90 ℃, and through air dry or dried 1 to 2 minute.
Cooling is reduced to below 65 ℃ mold surface temperature, immerses in the good latex mixture of presulfurization, makes glued membrane absorption evenly in 10 to 50 seconds of dipping, this after air dry or appropriateness oven dry (must not be higher than 110 ℃) 30 seconds to 3 minutes.
Crimping carries out leaching behind the crimping, require leaching water to keep clean state and be between 40 ℃ to 80 ℃, and leaching time requirement is (leaching is carried out before can being arranged in crimping) more than 30 seconds.
After this be operation very crucial during gloves are made, i.e. vulcanization process, this operation requires gloves dry sulfuration 10 to 30 minutes in 100 ℃ to 140 ℃ baking oven, optionally can carry out surface treatment then, or directly carries out hot water and steep and wash (back leaching).Bubble is washed temperature should surpass 80 ℃, and the time should surpass more than 20 seconds, optionally leaches interleaving agent; After air dry or oven dry, gloves are taken off from mould; Gloves after the off-type are put into bubble wash the pond and add an amount of clean water, and add an amount of liquor natrii hypochloritis's sterilization, can add a small amount of other interleaving agent, water temperature is heated up from low to high, stir simultaneously, dry then and get final product to such an extent that the powder medical gloves arranged.
No powder then needs further to add small amount of hydrochloric acid and continuous the stirring makes itself and gloves mix (generally deciding to need 5 to 40 minutes on equipment) if gloves need be processed into, this can be with gloves with 2 to 3 oven dry again of clear water rinsing after the processing after neutralisation treatment and add a certain amount of dodium thiosulfate (overall process is no more than 20 minutes).
The butadiene acrylonitrile rubber medical gloves of producing through this method has low soft, the intensity of stress at definite elongation Many advantages such as well, ageing-resistant performance is better, wear-resisting, solvent resistance is good, oil resistivity is good. If Need and to add nutrient solution at rinsing process, make gloves play certain nutrition and health care to skin and do With.
Claims (3)
1, a kind of manufacture method of butadiene acrylonitrile rubber medical gloves may further comprise the steps:
A. sizing material is prepared: mix NK220 NBR latex and SYNTHMER 6311 NBR latexes by 50: 50 volume ratios;
B. sizing material is carried out presulfurization, the proportioning of presulfurization agent is: 1～5% KOH, 0.5～2.0% sulphur, 0.6～3.0% ZnO, 0～1.5% ZDC, 0～1.0% BZ, 0.6～2.5% titanium dioxide;
C. moulding;
D. sulfuration;
E. surface treatment.
2, the manufacture method of butadiene acrylonitrile rubber medical gloves according to claim 1 is characterized in that: the KOH of adding 20% regulated pH value 9～10.5 as stabilizing agent after two kinds of acrylonitrile-butadiene rubber latex mixed in the described steps A.
3, the manufacture method of butadiene acrylonitrile rubber medical gloves according to claim 1 is characterized in that: sulphur will carry out ball-milling treatment among the described step B, and the ball milling time reached more than 72 hours; ZDC and BZ are in 0.2～0.6% and 0.3～0.7% ratio mixed grinding, and BZ+ZDC＜1%.
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| CNB2004100777399A CN100563982C (en) | 2004-12-29 | 2004-12-29 | The manufacture method of butadiene acrylonitrile rubber medical gloves |
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| CNB2004100777399A CN100563982C (en) | 2004-12-29 | 2004-12-29 | The manufacture method of butadiene acrylonitrile rubber medical gloves |
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| CN100563982C true CN100563982C (en) | 2009-12-02 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101889741B (en) * | 2009-05-18 | 2012-05-02 | 杨旭 | Method for preparing safe latex gloves |
| CN101920541B (en) * | 2010-08-03 | 2013-05-22 | 邓琳 | Production method of rubber gloves dipped in cotton velvet |
| AU2016358110B2 (en) | 2015-11-19 | 2022-01-27 | O&M Halyard International Unlimited Company | Breach detection glove with a high contrast between the color on the donning side and the grip side of the glove |
| CN105778185A (en) * | 2016-03-22 | 2016-07-20 | 镇江华扬乳胶制品有限公司 | High-strength high-elongation antibacterial soft graphene rubber latex |
| CN106514918A (en) * | 2016-10-27 | 2017-03-22 | 南京润京乳胶制品有限公司 | Production method of latex gloves |
| CN107216505A (en) * | 2017-04-07 | 2017-09-29 | 南通强生安全防护科技股份有限公司 | Disposable graphene butyronitrile Rubber gloves and preparation method thereof |
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Non-Patent Citations (2)
| Title |
|---|
| 低过敏性高强度医用手套. 唐翠芳.世界橡胶工业，第29卷第1期. 2002 |
| 低过敏性高强度医用手套. 唐翠芳.世界橡胶工业，第29卷第1期. 2002 * |
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