CN103194911B - Mosquito-repellent fabric and preparation method thereof - Google Patents

Mosquito-repellent fabric and preparation method thereof Download PDF

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Publication number
CN103194911B
CN103194911B CN201310151432.8A CN201310151432A CN103194911B CN 103194911 B CN103194911 B CN 103194911B CN 201310151432 A CN201310151432 A CN 201310151432A CN 103194911 B CN103194911 B CN 103194911B
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polyurethane
fabric
mosquito
preparation
mosquito repellent
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CN103194911A (en
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刘也多
汪新贵
王文彬
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SHANGHAI YANGFAN INDUSTRIAL Co Ltd
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SHANGHAI YANGFAN INDUSTRIAL Co Ltd
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Abstract

The invention discloses a mosquito-repellent fabric in the field of outdoor goods. The mosquito-repellent fabric comprises a base fabric and a polyurethane microcapsule coating positioned on the base fabric, wherein the polyurethane microcapsule coating is made of polyurethane microcapsules, and each polyurethane microcapsule comprises the raw materials of polyurethane latex particles and insecticide coated in the polyurethane latex particles. The fabric has the technical effects that the insecticide can be slowly released, the mosquito repellence effect is good, the service life is long, after the mosquito-repellent fabric is washed repeatedly, the mosquito repellence effect can not be obviously reduced, and no damage to a human body is easily caused. The invention further discloses a preparation method for the mosquito-repellent fabric in the field of outdoor goods. The preparation method comprises the following steps of: preparing the polyurethane microcapsules, preparing the microcapsule finishing liquor and coating.

Description

A kind of mosquito repellent fabric and preparation method thereof
Technical field
The present invention relates to a kind of mosquito repellent fabric in outdoor goods field and a kind of preparation method of mosquito repellent fabric.
Background technology
All there is the puzzlement of mosquito countries in the world, China's located in subtropical zone.This problem is also quite outstanding.Meanwhile, the disseminator of mosquito or malaria and some other pathogen.Thereby it is very urgent finding a kind of suitable, effective mosquito repellent means.The World Health Organization once proposed with pesticide Impregnated Mosquito Nets, can only be passive prevent mosquito invasion.And the insecticidal effect of employing infusion method fabric is held time shorter, after washing, drug effect significantly declines, and must soak again.So not only bothered but also many consumption medicaments, efficiency is low, and easily contaminated environment, also has potential infringement to human body.
Summary of the invention
The object of the invention is, in order to overcome the deficiencies in the prior art, provides a kind of mosquito repellent fabric, and it can be controlled pesticide and carry out mosquito expelling in its surperficial rate of release, has good durability and repelling effect, and is difficult for human body to cause damage.Correspondingly, the present invention also provides a kind of preparation method of mosquito repellent fabric.
A kind of technical scheme that realizes above-mentioned purpose is: a kind of mosquito repellent fabric, comprise matrix fabric and the polyurethane microcapsule coating that is positioned at described matrix fabric upper surface, described polyurethane microcapsule coating consists of polyurethane microcapsule, described polyurethane microcapsule is by polyurethane latex particle, and is coated on that pesticide in described polyurethane latex particle forms.
Further, described pesticide is pyrethroid insecticides.
Further, described matrix fabric is pure-cotton fabric, pure pitted skin material, polyester fabric, acrylic fabric or nylon facing material.
Another technical scheme that realizes above-mentioned purpose is: a kind of preparation method of mosquito repellent fabric, comprises the following steps:
Polyurethane microcapsule preparation process: take polyethylene glycol and vulcabond as raw material, carry out emulsion polycondensation, and in the process of emulsion polycondensation, add pesticide and dispersant, obtain polyurethane microcapsule, described polyurethane microcapsule is by polyurethane latex particle, and is coated on that pesticide in described polyurethane latex particle forms;
Microcapsules dressing liquid preparation process: after the preparation thickener DRA aqueous solution, by polyurethane microcapsule and adhesive beta-schardinger dextrin-, add the described thickener DRA aqueous solution, stir, obtain microcapsules dressing liquid;
Coating step: after the above microcapsules dressing liquid of the upper surface blade coating of matrix fabric, dry at 85 ℃, then bake at 110-120 ℃, then wash at 80~90 ℃, finally again dry at 85 ℃, obtain mosquito repellent fabric.
Further, in described polyurethane microcapsule preparation process, first prepare the emulsion that OP10 emulsifier concentration is 2g/L, in the described emulsion of every 1000ml, add the PEG400 of 15g, the dispersant of the vulcabond of 3g, 3g and the pesticide of 15~25g again, then under the reaction temperature of the stir speed (S.S.) of 1000r/min and 70 ℃, carry out the emulsion polycondensation of 1.5h, finally naturally lower the temperature, and after being naturally cooled to room temperature standing 24h, obtain the precipitation of polyurethane microcapsule.
Further, described vulcabond is hexamethylene diisocyanate, toluene di-isocyanate(TDI) or methyl diphenylene diisocyanate.
Further, described dispersant is sodium alginate.
Further, described pesticide is pyrethroid insecticides.
Further, in described microcapsules dressing liquid preparation process, first compound concentration is the 15g/L thickener DRA aqueous solution, in the described thickener DRA aqueous solution of every 1000ml, add again the adhesive beta-schardinger dextrin-of 30~40g polyurethane microcapsule and 20g, continue to stir 5min, obtain microcapsules dressing liquid.
Further, in described coating step, the cloth speed of entering of described matrix fabric is 40-50m/min.
Adopted the technical scheme of a kind of mosquito repellent fabric of the present invention, the upper surface at matrix fabric scribbles polyurethane microcapsule coating, polyurethane microcapsule coating consists of polyurethane microcapsule, polyurethane microcapsule is by polyurethane latex particle, and the technical scheme that is coated on the pesticide formation in polyurethane latex particle.Its technique effect is: because the polyurethane latex particle in polyurethane microcapsule has by polyurethane housing, and the double-decker that is coated on the external emulsifying agent housing formation of described polyurethane shell, can make like this pesticide in polyurethane microcapsule slowly discharge, play the initiatively good result of mosquito repellent; Polyurethane adhesion performance is good simultaneously, poor permeability, therefore a kind of mosquito repellent fabric of the present invention only has upper surface to scribble polyurethane microcapsule coating, like this when using a kind of mosquito repellent fabric of the present invention, the upper surface that scribbles polyurethane microcapsule coating does not contact with human body, has guaranteed user's health.Can there is not because of washing the obvious decline of mosquito repellent ability in a kind of mosquito repellent fabric of the present invention simultaneously.Correspondingly, the present invention also provides a kind of preparation method of mosquito repellent fabric, comprises polyurethane microcapsule preparation process; Microcapsules dressing liquid preparation process and coating step.It also can realize above-mentioned technique effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of mosquito repellent fabric of the present invention.
Fig. 2 is the structural representation of polyurethane microcapsule in a kind of mosquito repellent fabric of the present invention.
The specific embodiment
Refer to Fig. 1 and Fig. 2, the present inventor is in order to understand technical scheme of the present invention better, below by embodiment particularly, and is described in detail by reference to the accompanying drawings:
Embodiment 1:
Polyurethane microcapsule preparation process: first the emulsifying agent 0P10 of 2g is added in the deionized water of 1000ml to the emulsion 1000ml that preparation emulsifying agent 0P10 concentration is 2g/L.Again the pesticide of the PEG400 of 15g, 3g hexamethylene diisocyanate and 15g is joined in described emulsion, then the sodium alginate that adds 3g in described emulsion is as dispersant.Then, in stir speed (S.S.), be 1000r/min, reaction temperature is, under the reaction condition of 70 ℃, to carry out emulsion polycondensation reaction.After 1.5h, emulsion polycondensation reaction terminating.Naturally be cooled to standing 24h after room temperature, generate the precipitation of polyurethane microcapsule 21, the particle diameter of polyurethane microcapsule 21 is 5~15 microns.The pesticide 4 that polyurethane microcapsule 21 comprises polyurethane latex particle 3 and is positioned at polyurethane latex particle 3.Polyurethane latex particle 3 is by polyurethane housing 31, and the emulsifying agent housing 32 being coated on outside polyurethane housing 31 forms.Upper strata clear aqueous solution is gone, and the precipitation that leaves polyurethane microcapsule 21 is standby.Wherein PEG400 is that molecular weight is 400 polyethylene glycol.Room temperature is 25 ℃ of left and right.
Microcapsules dressing liquid preparation process: microcapsules dressing liquid is formed by polyurethane microcapsule 21, adhesive beta-schardinger dextrin-, thickener DRA and deionized water mixed preparing.First take thickener DRA15g, add in 1000ml deionized water, stir, until thick dose of DRA mix at deionized water, till obtaining concentration and be the 15g/L thickener DRA aqueous solution.Then in the described thickener DRA aqueous solution, add polyurethane microcapsule 30g and adhesive beta-schardinger dextrin-20g, continue to stir 5min, finally make transparent uniform microcapsules dressing liquid.
Coating step: the upper surface using the microcapsules dressing liquid blade coating preparing at the pure-cotton fabric as matrix fabric 1, then this fabric is first dried 3min at 85 ℃, at 110-120 ℃, bake 3min again, then at 85~90 ℃, wash 1min, finally at 85 ℃, dry again 3min, obtain a kind of mosquito repellent fabric of the present invention, in coating step, the cloth speed of entering of matrix fabric 1 is 40-50m/min.
A kind of mosquito repellent fabric of the present invention, comprises matrix fabric 1 and the polyurethane microcapsule coating 2 that is positioned at matrix fabric 1 upper surface, and polyurethane microcapsule coating 2 consists of polyurethane microcapsule 21.
In above-described embodiment, polyoxyethylene nonylphenol ether 10 is polyoxyethylene nonylphenol ether, and thickener DRA is agent for polyacrylic acid thickening, and it is produced by German Clariant company.The pesticide using in the present embodiment is pyrethroid insecticides.
Embodiment 2:
Polyurethane microcapsule preparation process: first the emulsifying agent 0P10 of 2g is added in the deionized water of 1000ml to the emulsion 1000ml that preparation emulsifying agent 0P10 concentration is 2g/L.Again the pesticide of the PEG400 of 15g, 3g methyl diphenylene diisocyanate and 20g is joined in described emulsion, then the sodium alginate that adds 3g in described emulsion is as dispersant.Then, in stir speed (S.S.), be 1000r/min, reaction temperature is, under the reaction condition of 70 ℃, to carry out emulsion polycondensation reaction.After 1.5h, emulsion polycondensation reaction terminating.Naturally be cooled to standing 24h after room temperature, generate the precipitation of polyurethane microcapsule 21, the particle diameter of polyurethane microcapsule 21 is 5~15 microns.The pesticide 4 that polyurethane microcapsule 21 comprises polyurethane latex particle 3 and is positioned at polyurethane latex particle 3.Polyurethane latex particle 3 is by polyurethane housing 31, and the emulsifying agent housing 32 being coated on outside polyurethane housing 31 forms.Upper strata clear aqueous solution is gone, and the precipitation that leaves polyurethane microcapsule 21 is standby.
Microcapsules dressing liquid preparation process: microcapsules dressing liquid is formed by polyurethane microcapsule 21, adhesive beta-schardinger dextrin-, thickener DRA and deionized water mixed preparing.First take thickener DRA15g, add in 1000ml deionized water, stir, until thick dose of DRA mix at deionized water, till obtaining concentration and be the 15g/L thickener DRA aqueous solution.Then in the described thickener DRA aqueous solution, add polyurethane microcapsule 35g and adhesive beta-schardinger dextrin-20g, continue to stir 5min, finally make transparent uniform microcapsules dressing liquid.
Coating step: the upper surface using the microcapsules dressing liquid blade coating preparing at the pure-cotton fabric as matrix fabric 1, then this fabric is first dried 3min at 85 ℃, at 110-120 ℃, bake 3min again, then at 85~90 ℃, wash 1min, finally at 85 ℃, dry again 3min, obtain a kind of mosquito repellent fabric of the present invention, in coating step, the cloth speed of entering of matrix fabric 1 is 40-50m/min.
The pesticide using in the present embodiment is pyrethroid insecticides.
Embodiment 3:
Polyurethane microcapsule preparation process: first the emulsifying agent 0P10 of 2g is added in the deionized water of 1000ml to the emulsion 1000ml that preparation emulsifying agent 0P10 concentration is 2g/L.Again the pesticide of the PEG400 of 15g, 3g toluene di-isocyanate(TDI) and 25g is joined in described emulsion, then the sodium alginate that adds 3g in described emulsion is as dispersant.Then, in stir speed (S.S.), be 1000r/min, reaction temperature is, under the reaction condition of 70 ℃, to carry out emulsion polycondensation reaction.After 1.5h, emulsion polycondensation reaction terminating.Naturally be cooled to standing 24h after room temperature, generate the precipitation of polyurethane microcapsule 21, the particle diameter of polyurethane microcapsule 21 is 5~15 microns.The pesticide 4 that polyurethane microcapsule 21 comprises polyurethane latex particle 3 and is positioned at polyurethane latex particle 3.Polyurethane latex particle 3 is by polyurethane housing 31, and the emulsifying agent housing 32 being coated on outside polyurethane housing 31 forms.Upper strata clear aqueous solution is gone, and the precipitation that leaves polyurethane microcapsule 21 is standby.
Microcapsules dressing liquid preparation process: microcapsules dressing liquid is formed by polyurethane microcapsule 21, adhesive beta-schardinger dextrin-, thickener DRA and deionized water mixed preparing.First take thickener DRA15g, add in 1000ml deionized water, stir, until thick dose of DRA mix at deionized water, till obtaining concentration and be the 15g/L thickener DRA aqueous solution.Then in the described thickener DRA aqueous solution, add polyurethane microcapsule 40g and adhesive beta-schardinger dextrin-20g, continue to stir 5min, finally make transparent uniform microcapsules dressing liquid.
Coating step: the upper surface using the microcapsules dressing liquid blade coating preparing at the pure-cotton fabric as matrix fabric 1, then this fabric is first dried 3min at 85 ℃, at 110-120 ℃, bake 3min again, then at 85~90 ℃, wash 1min, finally at 85 ℃, dry again 3min, obtain a kind of mosquito repellent fabric of the present invention, in coating step, the cloth speed of entering of matrix fabric 1 is 40-50m/min.
The pesticide using in the present embodiment is pyrethroid insecticides.
Should be noted that, matrix fabric 1 can be not only pure-cotton fabric, can also be other fabrics such as pure pitted skin material, polyester fabric, acrylic fabric or nylon facing material.
Below the repelling effect of a kind of mosquito repellent fabric of the present invention is evaluated: the standard of evaluating institute's reference is AATCC135-2004 standard.
That selects examination worm that attack is qualified packs mosquito cage into, it is the 300/cage of the female mosquito of the aedes albopictus of not yet sucking blood of 3-5 age in days, and 4 experimenters, of the present invention a kind of mosquito repellent fabric that preparation method according to embodiment 1 to 3 is prepared, and of the present invention a kind of mosquito repellent fabric of preparing of the preparation method according to embodiment 1 to 3 of washing after 20 times, and pure-cotton fabric is placed on respectively by two arms of experimenter, hand is worn plastic glove, in mosquito cage, stop 2min, each test of first doing pure-cotton fabric is carried out after blank, make again the test of a kind of mosquito repellent fabric of the present invention.In counting 2min, on experimenter's arm, try the number of times that falls that stops of worm, as shown in table 1.
The list of table 1 a kind of mosquito repellent fabric result of use of the present invention
Sample Before washing, stop the number of times that falls Wash the number of times that falls that stops after 20 times
Embodiment 1 5 37
Embodiment 2 1 19
Embodiment 3 3 25
Pure-cotton fabric 106 113
As can be seen from Table 1, a kind of mosquito repellent fabric of the present invention has good repelling effect, and still has good repelling effect after washing 20 times.

Claims (4)

1. a preparation method for mosquito repellent fabric, comprises the following steps:
Polyurethane microcapsule preparation process: first prepare the emulsion that OP10 emulsifier concentration is 2g/L, in the described emulsion of every 1000ml, add again the PEG400 of 15g, the vulcabond of 3g, the dispersant of 3g and the pesticide of 15~25g, then under the reaction temperature of the stir speed (S.S.) of 1000r/min and 70 ℃, carry out the emulsion polycondensation of 1.5h, last cooling naturally, and after being naturally cooled to room temperature standing 24h, obtain the precipitation of polyurethane microcapsule, described polyurethane microcapsule is by polyurethane latex particle, and be coated on that pesticide in described polyurethane latex particle forms,
Microcapsules dressing liquid preparation process: first compound concentration is the 15g/L thickener DRA aqueous solution, in the thickener DRA of the every 1000ml aqueous solution, add again the adhesive beta-schardinger dextrin-of 30~40g polyurethane microcapsule and 20g, continue to stir 5min, obtain microcapsules dressing liquid;
Coating step: after the above microcapsules dressing liquid of the upper surface blade coating of matrix fabric, dry at 85 ℃, then bake at 110-120 ℃, then wash at 80~90 ℃, finally again dry at 85 ℃, obtain mosquito repellent fabric.
2. the preparation method of a kind of mosquito repellent fabric according to claim 1, is characterized in that: described dispersant is sodium alginate.
3. the preparation method of a kind of mosquito repellent fabric according to claim 1, is characterized in that: described pesticide is pyrethroid insecticides.
4. according to the preparation method of a kind of mosquito repellent fabric described in any one in claims 1 to 3, it is characterized in that: in described coating step, the cloth speed of entering of described matrix fabric is 40-50m/min.
CN201310151432.8A 2013-04-27 2013-04-27 Mosquito-repellent fabric and preparation method thereof Active CN103194911B (en)

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