CN102587024A - Flame-retardant blanket and preparation process for same - Google Patents
Flame-retardant blanket and preparation process for same Download PDFInfo
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- CN102587024A CN102587024A CN2012100064771A CN201210006477A CN102587024A CN 102587024 A CN102587024 A CN 102587024A CN 2012100064771 A CN2012100064771 A CN 2012100064771A CN 201210006477 A CN201210006477 A CN 201210006477A CN 102587024 A CN102587024 A CN 102587024A
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Abstract
A preparation process for a flame-retardant blanket includes a warp knitting process, a pre-finishing process, a washing process, a finishing process and a finished product manufacturing process, wherein the warp knitting process includes raw material selection and warping and weaving, raw materials of facing yarns are yarns made of organic phosphorus flame-retardant polyester fibers, warp knitting is performed by a double rib warp loom, the pre-finishing process is a low-speed multi-ironing process, the washing process is a low-speed multi-washing process, the finishing process is a low-speed brushing and finishing process, and the finished product manufacturing process uses edge covering cloth for covering edges. The organic phosphorus flame-retardant polyester fibers are prepared with dimethyl terephthalate, butanediol, hydroxymethyl phenylphosphinic acid and triphenyl phosphate according to the weight ratio of 60:40:10:1 by means of the processes of esterification reaction, drying crystallization, high-temperature melting, cooling, oiling agent treatment and the like. Compared with an existing blanket, the flame-retardant blanket has the advantages that the limited oxygen combustion index of the flame-retardant fibers reaches 35% so that the fibers are non-combustible, and the limited oxygen combustion index of the flame-retardant blanket reaches 28% so that the flame-retardant blanket belongs to flame-retardant fabrics.
Description
Technical field
The present invention relates to a kind of fire-retardant woollen blanket and preparation technology thereof, being specifically related to a kind of organophosphor that utilizes is fire-retardant woollen blanket and the preparation technology thereof of flame retardant polyester fiber as raw material.
Background technology
Most woollen blankets belong to inflammable or combustible material, and to account for the fire incident ratio increasing because of the not fire-retardant fire that causes of textiles.Conventional polyster fibre has that intensity height, good springiness, wrinkle resistance are strong, dimensionally stable, good, the stable chemical performance of ABRASION RESISTANCE; Performances such as heat resistance and weather fastness are good; Therefore it becomes a kind of very desirable textile material; More general raw material as woollen blanket, but itself be a kind of combustible fibre, its application in a lot of fields is restricted.In order to improve its range of application, must make its effect with flame resistance, therefore, the research of polyster fibre flame-retarded technology becomes the problem that academia and industrial quarters are extremely paid close attention to, and the increasing fire resistance fibre product of coming in constantly comes out.
A kind of anti-flammability of flame-retardant textile; Be to estimate according to standard GB 5454-85 combustion test method; This standard code sample places under the vertical experimental condition, in oxygen-nitrogen mixture stream, measures the test method that sample is just kept the required minimum oxygen concentration of burning (also claiming limited oxygen index).
The process of test is that presumptive oxygen concentration is found corresponding oxygen flow and nitrogen flow from the appendix table; In the igniting of sample upper end, be controlled at the duration of ignition in the 10-15s, after sample upper end complete inflammation, remove igniter; Begin to measure burning time immediately, measure char length subsequently.
The benchmark of estimating is, from putting out, or char length is less than 40mm in the time of satisfying char length and reach 40mm, but reaches 2min required minimum nitrogen flow when above burning time.
The calculating limit oxygen index (OI):
Limited oxygen index LOI (Limit Oxygen Index):
---after fiber is lighted, in oxygen, nitrogen atmosphere, keep the needed minimum oxygen content percentage by volume of burning.
LOI=(V oxygen/(V oxygen+V nitrogen)) * 100% wherein V oxygen is oxygen flow (L/min), and V nitrogen is nitrogen flow (L/min), and LOI is big more, the difficult combustion of illustrative material.
In recent years, the development of flame-retarded technology is put in order after having passed through fabrics flame resistance in earlier stage, compound spinning and crosslinking technology, and developing into present employing halogen system and phosphorus is that copolyester fiber is as fire proofing.Put in order after the fabrics flame resistance, through washing with along with the increase of service time, the fire-retardant molecule that infiltrates in the fabric fibre volatilizees gradually, causes anti-flammability to reduce.The compound technical conditions of spinning with back graft copolymerization require very high, and production cost is also too high simultaneously, thereby is not generally used.Though the halogen flame flame retardant effect meets the requirements; But self there is a series of defective; As when burning, being prone to emit excitant and corrosive hydrogen halide; And when Pintsch process and burning, produce poisonous many bromos and furans and many bromos dibenzo pentane, safety of life and property is constituted a threat to.
In the present prior art; Mostly the developing direction of fire-retardant polyester fibre is to adopt phosphorus based polyester flame-retardant complex fiber; Application number is 200610161444.9 application for a patent for invention; Adopt the phosphor based polyester fiber and use twill or satin weave is main weave structure, the limited oxygen index of the fire-retardant polyester fibre that makes can reach 28.Application number is 200610041006.9 application for a patent for invention, and the main body of its fire resistance fibre is PETG, polytrimethylene terephthalate, polybutylene terephthalate (PBT) and adds phosphorus flame retardant, carries out melt spinning.
But the limited oxygen index of above-mentioned fire-retardant polyester fibre of the prior art is still on the low side, still has to continue improved space.
Summary of the invention
The object of the invention provides a kind of fire-retardant woollen blanket and production method thereof exactly for solving the problems of the technologies described above, and it uses organophosphor is that flame retardant polyester fiber is as raw material.
The present invention is that the technical scheme that solves the problems of the technologies described above employing is:
A kind of production method of fire-retardant woollen blanket comprises following processing step:
(1) warp knitting technology; Said warp knitting technology comprises that the selection of raw material and warping weave; It is the yarn that flame retardant polyester fiber is processed that the veil raw material is selected organophosphor for use, and fibre fineness 30D weaves with double rib warp loom through editing and interviewing; It spaces and is 16mm, and the Gram Mass of grey cloth is set at 650-680g;
(2) whole in advance technology; The said in advance whole many ironing process of process using low speed, wherein the speed of a motor vehicle is controlled at 7-8m/min, and temperature is 185 ℃, and whole in advance technological process finishes back check deoiling effect;
(3) washing process; Said washing process adopts low speed to wash technology more, and the washing speed of a motor vehicle is controlled at 10-12m/min, and the hot water storgae water temperature is 40-50 ℃, and the pH value is 7;
(4) finishing technique; Said finishing technique adopts low speed bristle, low speed to scald light technology, and wherein the bristle speed of a motor vehicle is 2.5-3m/min, and scalding the light temperature is 175-180 ℃;
(5) finished product manufacture craft; Said finished product manufacture craft adopts the edge-covering cloth bound edge;
The organophosphor that said warp knitting technology adopts is that the preparation process of flame retardant polyester fiber is following: is 60: 40: 10 by rutgers, butanediol, hydroxymethyl phenyl phosphinic acids and triphenyl phosphate according to weight proportion: 1 ratio joins in the esterifying kettle mixes; At 270 ℃; Pressure is to carry out esterification under the 0.4MPa condition 1 hour, slowly sets up vacuum, in half an hour, makes vacuum reduce to 100kPa; Keep the vacuum constant then, obtained flame retardant polyester in 2 hours 280 ℃ of reactions; Above-mentioned flame retardant polyester carries out drying crystalline then under 180 ℃ of temperature conditions to put into the screw extruder high temperature melt then be the melt spinning melt; High-pressure injection under 45MPa pressure becomes strand through filament spinning component again; 300 ℃ of spinning temperatures; And then be 25 ℃ with strand through temperature, humidity is 62%, speed is that the air-conditioning air cooling of the constant temperature and humidity of 0.6m/s forms as-spun fibre; After the processing of above-mentioned as-spun fibre process finish, carry out the roller multistage drafting through 5 counter extensioin rollers, be flame retardant polyester fiber thereby make said organophosphor.
Said finish and organophosphor are that the mass ratio of flame retardant polyester fiber is 1: 100, and said finish forms according to the feedstock production of following weight ratio: alkyl phosphate sodium 50%, hydrophilic white oil 20%, fatty acid polyglycol ethylene glycol 18%, phthalic acid two new esters 12%.
Said organophosphor is that the fracture strength of flame retardant polyester fiber is 6.18cn/dtex, and the combustion limits oxygen index (OI) is 35%, elongation at break 14.1%, and fibre fineness is 30D.
A kind of fire-retardant woollen blanket is characterized in that, said fire-retardant woollen blanket is to make through aforementioned production method.
Beneficial effect of the present invention is: fire-retardant woollen blanket of the present invention is compared with existing woollen blanket; At first in the use of raw material, what fire-retardant woollen blanket adopted is that organophosphor is a flame retardant polyester fiber, detects through test; The burns oxygen limit index of this fire resistance fibre reaches 35%, is not flammable fiber.Secondly, fire-retardant woollen blanket functional: the fire resistance of fire-retardant woollen blanket be general woolen blanket do not have, the combustion limits oxygen index (OI) of general woolen blanket is 20%, belongs to flammable fabric.And detect through test, the combustion limits oxygen index (OI) of fire-retardant woollen blanket belongs to difficulty combustible fabric 28%.
The specific embodiment
The production and processing technology of fire-retardant woollen blanket of the present invention mainly comprises following step: (1) warp knitting technology; (2) whole in advance technology; (3) washing process; (4) finishing technique; (5) finished product manufacture craft.
Through compiling is to feed knitting needle simultaneously by the yarn that a group or several groups of warp-wises are arranged in parallel to carry out lopping, forms the braid method of fabric owing to the connection between the wale.Warp knitting technology of the present invention is divided into the selection and the warping of raw material to be weaved, and aspect raw material, adopting organophosphor is flame retardant polyester fiber, and its fire-retardant principle is to cover fabric face through phosphorus compound, has played the effect of secluding air.Phosphorus compound can absorb a large amount of oxygen, has reduced the required oxygen that burns, and when burning, can absorb large quantity of moisture simultaneously, has reduced the required temperature of burning.Organophosphor is that the difference of flame retardant polyester fiber and conventional fibre is to have fire-retardant characteristic, mainly produces through chemical modification and physical deformation.It is raw material that the veil raw material adopts chemical modification flame retardant polyester fiber yarn, and about fibre fineness 30D, through editing and interviewing with the double rib warp loom braiding, it spaces and is 16mm, and the Gram Mass of grey cloth can be set in about 650-680g.
In advance whole technology: adopt the many ironing process of low speed, reach the effect of efficient degreasing.Wherein the speed of a motor vehicle is controlled at 7-8m/min, 185 ℃ of temperature.Technological process finishes and the check deoiling effect.
Washing process: adopt low speed to wash technology more, and add functional aid, make fiber have the sensation of " smooth, ultra gentle ".For clean fiber completely, the washing speed of a motor vehicle should be controlled at 10-12m/min, and the hot water storgae water temperature should be controlled at 40-50 ℃, and the pH value is 7.The auxiliary agent groove adds functional aid, makes fiber have soft and smooth sense.
Finishing technique: adopt low speed bristle, low speed to scald the technology of light.Wherein the bristle speed of a motor vehicle is 2.5-3m/min.Scald the light temperature between 175-180 ℃.
The finished product manufacture craft adopts the edge-covering cloth bound edge.
The used organophosphor of the present invention is that the preparation process of flame retardant polyester fiber is following:
(English name: Hydroxymethyl phenylphosphinic acid is called for short: be 60: 40: 10 with triphenyl phosphate according to weight proportion HMPPA): 1 ratio joins in the esterifying kettle mixes with dimethyl terephthalate (DMT) (DMT), butanediol (99vol%), hydroxymethyl phenyl phosphinic acids; At 270 ℃; Pressure is to carry out esterification under the 0.4MPa condition 1 hour; Slowly set up vacuum; In half an hour, make vacuum reduce to 100kPa, keep vacuum constant then, can obtain flame retardant polyester in 2 hours 280 ℃ of reactions.
Above-mentioned flame retardant polyester carries out drying crystalline then under 180 ℃ of temperature conditions; Putting into the screw extruder high temperature melt is the melt spinning melt; High-pressure injection under 45MPa pressure becomes strand through filament spinning component again; Spinning temperature is 300 ℃; And then be 25 ℃ with strand through temperature, humidity is 62%, speed is that the air-conditioning air cooling of the constant temperature and humidity of 0.6m/s forms as-spun fibre; After above-mentioned as-spun fibre handled through finish, carry out the roller multistage drafting through 5 counter extensioin rollers, drawing roller speed and temperature are respectively 540m/min and 80 ℃; 680m/min and 90 ℃; 1827m/min and 100 ℃, 3421m/min and 220 ℃, 4200m/min and 110 ℃.Finish is 1: 100 with the quality of fiber ratio, the finish that the finish available markets is bought, and preferably the feedstock production according to the following weight ratio forms: alkyl phosphate sodium 50%, hydrophilic white oil 20%, fatty acid polyglycol ethylene glycol, 18%, phthalic acid two new esters 12%.
The polyster fibre for preparing has good spinning properties; Because handle through finish, thereby have characteristics antistatic, that flatness is good, the fracture strength of fiber is 6.18cn/dtex; Through verification experimental verification; The combustion limits oxygen index (OI) is more than 35%, elongation at break 14.1%, and fibre fineness is 30D.
Fire-retardant woollen blanket of the present invention is compared with existing woollen blanket, and at first in the use of raw material, what fire-retardant woollen blanket adopted is that organophosphor is a flame retardant polyester fiber, detects through test, and the burns oxygen limit index of this fire resistance fibre reaches more than 35%, is not flammable fiber.Secondly, fire-retardant woollen blanket functional: the fire resistance of fire-retardant woollen blanket be general woolen blanket do not have, the combustion limits oxygen index (OI) of general woolen blanket is 20%, belongs to flammable fabric.And detect through test, the combustion limits oxygen index (OI) of fire-retardant woollen blanket belongs to difficulty combustible fabric more than 28%.
Though, the present invention has been done detailed description in the preceding text with general explanation and specific embodiments, on basis of the present invention, can to some modifications of do or improvement, this will be apparent to those skilled in the art.Therefore, these modifications or the improvement on the basis of not departing from spirit of the present invention, made all belong to the scope that requirement of the present invention is protected.
Claims (4)
1. the production method of a fire-retardant woollen blanket comprises following processing step:
(1) warp knitting technology; Said warp knitting technology comprises that the selection of raw material and warping weave; It is the yarn that flame retardant polyester fiber is processed that the veil raw material is selected organophosphor for use, and fibre fineness 30D weaves with double rib warp loom through editing and interviewing; It spaces and is 16mm, and the Gram Mass of grey cloth is set at 650-680g;
(2) whole in advance technology; The said in advance whole many ironing process of process using low speed, wherein the speed of a motor vehicle is controlled at 7-8m/min, and temperature is 185 ℃, and whole in advance technological process finishes back check deoiling effect;
(3) washing process; Said washing process adopts low speed to wash technology more, and the washing speed of a motor vehicle is controlled at 10-12m/min, and the hot water storgae water temperature is 40-50 ℃, and the pH value is 7;
(4) finishing technique; Said finishing technique adopts low speed bristle, low speed to scald light technology, and wherein the bristle speed of a motor vehicle is 2.5-3m/min, and scalding the light temperature is 175-180 ℃;
(5) finished product manufacture craft; Said finished product manufacture craft adopts the edge-covering cloth bound edge;
It is characterized in that; The organophosphor that said warp knitting technology adopts is that the preparation process of flame retardant polyester fiber is following: is 60: 40: 10 by rutgers, butanediol, hydroxymethyl phenyl phosphinic acids and triphenyl phosphate according to weight proportion: 1 ratio joins in the esterifying kettle mixes; At 270 ℃; Pressure is to carry out esterification under the 0.4MPa condition 1 hour, slowly sets up vacuum, in half an hour, makes vacuum reduce to 100kPa; Keep the vacuum constant then, obtained flame retardant polyester in 2 hours 280 ℃ of reactions; Above-mentioned flame retardant polyester carries out drying crystalline then under 180 ℃ of temperature conditions to put into the screw extruder high temperature melt then be the melt spinning melt; High-pressure injection under 45MPa pressure becomes strand through filament spinning component again; 300 ℃ of spinning temperatures; And then be 25 ℃ with strand through temperature, humidity is 62%, speed is that the air-conditioning air cooling of the constant temperature and humidity of 0.6m/s forms as-spun fibre; After the processing of above-mentioned as-spun fibre process finish, carry out the roller multistage drafting through 5 counter extensioin rollers, be flame retardant polyester fiber thereby make said organophosphor.
2. production method according to claim 1; It is characterized in that; Said finish and organophosphor are that the mass ratio of flame retardant polyester fiber is 1: 100, and said finish forms according to the feedstock production of following weight ratio: alkyl phosphate sodium 50%, hydrophilic white oil 20%; Fatty acid polyglycol ethylene glycol 18%, phthalic acid two new esters 12%.
3. production method according to claim 1 and 2 is characterized in that, said organophosphor is that the fracture strength of flame retardant polyester fiber is 6.18cn/dtex, and the combustion limits oxygen index (OI) is 35%, elongation at break 14.1%, and fibre fineness is 30D.
4. a fire-retardant woollen blanket is characterized in that, said fire-retardant woollen blanket is that the production method through claim 1 or 2 or 3 makes.
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| CN2012100064771A CN102587024A (en) | 2012-01-11 | 2012-01-11 | Flame-retardant blanket and preparation process for same |
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Cited By (4)
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| CN102747500A (en) * | 2012-07-20 | 2012-10-24 | 淄博奈琦尔纺织科技发展有限公司 | Flame-retardant lifesaving blanket and production method thereof |
| CN103273783A (en) * | 2013-05-31 | 2013-09-04 | 赵振利 | Inlaid craft carpet and manufacturing process |
| CN106192176A (en) * | 2016-07-15 | 2016-12-07 | 上海嘉麟杰纺织品股份有限公司 | A kind of preparation method of floss class fabric frivolous, warming, fire-retardant |
| CN115821571A (en) * | 2022-12-10 | 2023-03-21 | 江苏金呢工程织物股份有限公司 | Method for improving initial performance of papermaking felt |
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| CN106192176A (en) * | 2016-07-15 | 2016-12-07 | 上海嘉麟杰纺织品股份有限公司 | A kind of preparation method of floss class fabric frivolous, warming, fire-retardant |
| CN115821571A (en) * | 2022-12-10 | 2023-03-21 | 江苏金呢工程织物股份有限公司 | Method for improving initial performance of papermaking felt |
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Application publication date: 20120718 |