CN107899301B - A kind of fire-retardant filter cotton - Google Patents
A kind of fire-retardant filter cotton Download PDFInfo
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- CN107899301B CN107899301B CN201711403207.3A CN201711403207A CN107899301B CN 107899301 B CN107899301 B CN 107899301B CN 201711403207 A CN201711403207 A CN 201711403207A CN 107899301 B CN107899301 B CN 107899301B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/04—Additives and treatments of the filtering material
- B01D2239/0457—Specific fire retardant or heat resistant properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
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Abstract
The present invention provides a kind of fire-retardant filter cotton, the fibre-forming polymer used is the aromatic polyamide fibre itself with fire retardation, i.e. Fanglun 1414 and/or Fanglun 1313；The present invention joined a certain amount of auxiliary agent in fire-retardant filter cotton, improve the anti-flammability, high temperature resistance and chemical resistance of the retardant cotton, to allow the fire-retardant filter cotton preferably applied to the filtering of high-temperature service；Fiber is encrypted into lapping step by step in process of production, thickness only has 20mm, but the fire-retardant filter cotton produced has good filter effect, and grade of filtration is made to be reduced to 3-5 μm, filter efficiency is increased to 96% or more, fire-retardant filter cotton good flame retardation effect provided by the invention has good corrosion resistance, and dissolved drip, fire retardant are not added baked wheaten cake in fiber manufacturing process, fire retardant is not easy to fall off, and hygroscopicity is low, and moisture-proof is strong, long service life.
Description
Technical field
The present invention relates to air filter field, specifically a kind of filter cotton in filter.
Background technique
It is well known that with the development of industry, air pollution is increasingly severe, containing a large amount of dust (such as ash in air
Dirt, dust, flue dust, mine dust, dust etc.) particle, dust to the beauty of human body, environment, production, product quality and natural scene,
And the ecological balance all has a significant impact.Because of the very light in weight of these dust particles, when the air effect of flowing is in this
When a little dust particles, the weight of dust particles itself can be offset, so that these dust is in a kind of floating state, only opposite
The space of sealing, in the case that air is opposing stationary, dust just can be because of falling to the ground under the action of terrestrial gravitation.
With the deterioration of air environment, air cleaning has become one of the main problem that people face, especially some
Industrially, production must carry out in relatively clean space, such as be surface-treated, oil paint coating, spraying, precise electronic, optics electricity
Son, bio-pharmaceuticals, food production, air cooling etc., these environment need the air flowed, but cannot have dust, so just needing
Dust-filtering is fallen with filter cotton, only allows clean air to recycle in the space of relative closure, to reach raw
Produce the needs of operation.Dust in air falls on the rotary part of machine, can accelerate the abrasion of rotary part, river area and its
The precision of work and service life, dust is diffused can be such that visibility reduces with workshop, influence the visual field, interfere operation, reduce labour production
Rate, or even will cause accident.If dust, which is discharged into air, will cause atmosphere pollution, in addition, the dust in air can reduce greatly
The visibility of gas, promotes the formation of smog, so that the transmitting of solar radiant energy be made to be affected.
Therefore, the requirement with people to air quality is higher and higher, and the status of air purifier increases therewith, and air
The structure of most critical is exactly filter cotton in clarifier, and the quality of filter cotton decides the depuration quality of air purifier, therefore mistake
The status that filter pulp just has it indispensable, the opposite moisture resistance of filter cotton and fire protection requirement make two important performance indicators,
But filter cotton flame retardant effect and moisture resistance currently on the market is poor.Still further aspect, the prior art are to reach filter cotton
It is that fire resistance fibre is added in material mixture ratio and is process in the method for surface spray coated flame retardant agent, technique to flame retardant effect
It is very complicated, and flame retardant effect is not especially desirable, and high production cost.
Such as a kind of fire-retardant filter cotton of uvioresistant, preparation side are disclosed in Chinese patent application 201620867876.0
Method be made of the several layers filter cotton body layer together of close adhesion after impregnation, this preparation method due to impregnation from
And the filter cotton permeability of production is reduced, so that the fire-retardant filter cotton for reducing filter efficiency, and producing is provided with glass
Glass flame-retardant fiber net, net retardance is easy to fall off in use, to reduce the flame retardant effect of filter cotton.
A kind of high fire-retardance filter cotton and preparation method thereof is for another example disclosed in Chinese patent application 201510580739.9,
The preparation method comprises the following steps: 1) preparation of fire resistance fibre；2) mixed cotton；3) shredding；4) it combs；5) lapping；6) hot air shaping.Its production cost
It is higher.And it joined 30% or so fire retardant before fiber sizing, the addition of a large amount of fire retardants can make fire resistance fibre spinning
Other performances highly difficult but also that be likely to affect fiber that process becomes.
Summary of the invention
In order to solve problems in the prior art, that the present invention provides a kind of thickness is thin, filter effect is good, high fire-retardance, moisture-proof
Degree is high, has preferable corrosion resistance, fire-retardant filter cotton with long service life, and provides fire-retardant mistake described in a kind of prepare
The method of filter pulp.
The present invention provides a kind of fire-retardant filter cottons, can be used for high temperature drying chamber, drying tunnel, oven, combined padding and drying system and alter equipment
The powered air-purifying of equal high-temperature services；The equipment protections dustproof filters such as each type high temp electromechanics, computer room；The ventage of high fire protection requirement
System filtering；High-temperature exhaust emission filtering and high-temperature resistant filter filtrate.The flame retardant property of fire-retardant filter cotton provided by the invention
Have reached Japanese air cleaning association criterion: the highest level Class3 of JACA No.11A-2003 burning test.
Definition:
In the present invention, D is the English abbreviation of Denier unit, is a kind of pencil silk, staple fibre, nylon textile fiber
Direct system density unit, refer to quality grams of the fiber of 9000m long in official regain, unit is danier list
Position, abbreviation denier, English abbreviation D.Denier is the unit of measurement of fibre fineness, and number is bigger, and yarn or fiber are thicker.
On the one hand, the present invention provides a kind of fire-retardant filter cottons, and close the component for having following percent mass ratio: 1-3D is fire-retardant
Fiber 5-50%, 4-8D fire resistance fibre 15-40%, 9-12D fire resistance fibre 20-30%, 13-18D fire resistance fibre 5-30%.
The fire resistance fibre is the aromatic polyamide fibre (abbreviation aramid fiber) with anti-flammability, the fragrant adoption
Nylon is Fanglun 1414 and/or Fanglun 1313.
In some embodiments, the fire resistance fibre is Fanglun 1414.
In other embodiments, the fire resistance fibre is Fanglun 1313.
In other embodiments, the fire resistance fibre is Fanglun 1414 and poly- isophthalic two
The composite fibre of formyl m-phenylene diamine (MPD) fiber.
In some specific embodiments, between the fire resistance fibre is Fanglun 1414 and is poly-
The composite fibre of phenyl-diformyl m-phenylene diamine (MPD) fiber, wherein Fanglun 1414 is heart, poly- isophthalic diformazan
Acyl m-phenylene diamine (MPD) fiber is outer layer.
In other specific embodiments, the fire resistance fibre Fanglun 1414 and it is poly- between
The composite fibre of phenyl-diformyl m-phenylene diamine (MPD) fiber, wherein Fanglun 1313 is heart, poly- terephthaldehyde
Acyl p-phenylenediamine fiber is outer layer.
After the present invention is it has been unexpectedly found that be added auxiliary agent into the formula of the fire-retardant filter cotton, flame retardant effect
Enhance with corrosion resistance, hygroscopicity reduction, service life rises appreciably.
The auxiliary agent be surfactant, the surfactant be selected from polysorbate, neopelex,
One or more of glyceride citrate and sorbitan monostearate；
Preferably, the auxiliary agent is selected from glyceride citrate and is used in mixed way with sorbitan monostearate, and controls ratio
It is 1: 1；
Percent mass ratio 1-10% of the auxiliary agent in fire-retardant filter cotton provided by the invention；Preferably 2-8%；Into
One step is preferably 3-5%.
In fire-retardant filter cotton provided by the invention, the percent mass ratio 1-10% of polysorbate；Preferably 2-8%；Into
One step is preferably 3-5%.
In fire-retardant filter cotton provided by the invention, the percent mass ratio 1-10% of neopelex；Preferably
2-8%；Further preferably 3-5%.
In fire-retardant filter cotton provided by the invention, the percent mass ratio 1-10% of glyceride citrate；Preferably 2-
8%；Further preferably 3-5%.
In fire-retardant filter cotton provided by the invention, the percent mass ratio 1-10% of sorbitan monostearate；Preferably
2-8%；Further preferably 3-5%.
On the other hand, the present invention provides the preparation methods of above-mentioned fire-retardant filter cotton, comprising the following steps:
(1) auxiliary agent is mixed in fibre-forming polymer by formula rate, after being sufficiently mixed, by the fibre-forming polymer after polycondensation
Melt is sliced, drying, melting, then spinning through Cast Strip, pelletizing；
(2) fire resistance fibre is matched by formula rate, and blender is poured into after weighing by machine and rotates stirring, various raw materials
It is uniformly mixed；
(3) coma uniformly spread out is transmitted to cubing-roll device by roller, carries out one by the agglomerating fiber that will be stirred
Secondary shredding, is then sent to secondary fibre-opening unit by blower, and coma is sent to blending box, You Maodou by blower after secondary shredding
Vibration is mixed；
(4) fiber is combed uniformly, the fiber combed is encrypted into lapping step by step, uniform stratum reticulare is paved into and is sent into again by bottom screen
Oven；
(5) uniform cotton layer is sent into oven, set temperature oven low-melting fiber by various fiber obvolvents one
It rises to form synthetic fibers cotton.
In the fire-retardant filter cotton preparation process, the mass percent of auxiliary agent is 3-20%, the matter of the fibre-forming polymer
Measure percentage 75-97%.
A kind of fire-retardant filter cotton provided by the invention, has the advantage that
(1) the right filter cotton of resistance provided by the invention be suitable for various high temperature, the ventilation equipment of fire-preventive environment, cleaner,
Filtering in supply air system；
Such as:
A, the powered air-purifying of the high-temperature services such as high temperature drying chamber, drying tunnel, oven, combined padding and drying system, coating equipment；
B, each type high temp is electromechanical, the equipment protections dustproof filter such as computer room；
C, the ventilating system filtering of high fire protection requirement；
D, high-temperature exhaust emission filters；
E, high-temperature resistant filter filtrate；
(2) the right filter cotton of resistance provided by the invention uses the special flame retardant synthetic fibers polyamide with elasticity and durability
Lapping is encrypted after (Aromatic polyamide) combing step by step to be made through hot wind appearance and technique；
(3) the right filter cotton of resistance provided by the invention, which uses, has fine corrosion resistance, resistance to various solvents, acid and alkali-resistance, resistance to height
Warm flame retardant property is splendid, and good flame retardation effect has good corrosion resistance, burns not dissolved drip, fire retardant is in fiber manufacturing process
It is added, fire retardant is not easy to fall off, and hygroscopicity is low, and moisture-proof is strong, long service life；
(4) joined a certain amount of auxiliary agent in fire-retardant filter cotton provided by the invention, improve the retardant cotton anti-flammability,
High temperature resistance and chemical resistance, to allow the fire-retardant filter cotton preferably applied to the filtering of high-temperature service；
(5) fiber is encrypted lapping in process of production by the present invention step by step, and thickness only has 20mm, but the fire-retardant mistake produced
Filter pulp has good filter effect, so that grade of filtration is reduced to 3-5 μm, filter efficiency is increased to 96% or more.
Specific embodiment
The present invention is further described through combined with specific embodiments below, but specific embodiment does not appoint the present invention
What is limited.
Embodiment 1-4 and comparative example 1-4 is provided with according to kinds of fibers difference
A kind of fire-retardant filter cotton of embodiment 1 and preparation method thereof
Formula:
Fire resistance fibre used are as follows: Fanglun 1414；
Its mass percentage content are as follows: 3D fire resistance fibre 20%, 5D fire resistance fibre 30%, 7D fire resistance fibre 10%, 10D resistance
Fire fiber 20%, 15D fire resistance fibre 20%；
Preparation method:
(1) by Fanglun 1414's polymer in above-mentioned formula, after being sufficiently mixed, after polycondensation
Fanglun 1414's polymer melt is sliced, drying, melting through Cast Strip, pelletizing, then
Spinning；
(2) fire resistance fibre is matched according to ratio in above-mentioned formula, is poured into blender after the first weight of title and is stirred by machine rotation
It mixes, various raw materials is uniformly mixed；
(3) coma uniformly spread out is transmitted to cubing-roll device by roller, carries out one by the agglomerating fiber that will be stirred
Secondary shredding, is then sent to secondary fibre-opening unit by blower, and coma is sent to blending box, You Maodou by blower after secondary shredding
Vibration is mixed；
(4) fiber is combed uniformly, from thick to thin by the fiber combed, structure, to closely, is spread by fluffy through 5 grades of combings
Net is paved into uniform stratum reticulare and is sent into oven by bottom screen again；
(5) uniform cotton layer is sent into oven, set temperature oven low-melting fiber by various fiber obvolvents one
It rises to form synthetic fibers cotton.
A kind of fire-retardant filter cotton of embodiment 2 and preparation method thereof
Formula:
Fire resistance fibre used are as follows: Fanglun 1313
Mass percentage content are as follows: 3D fire resistance fibre 20%, 5D fire resistance fibre 30%, 7D fire resistance fibre 10%, 10D is fire-retardant
Fiber 20%, 15D fire resistance fibre 20%；
Preparation method: in addition to raw material, remaining step is same as Example 1.
A kind of fire-retardant filter cotton of embodiment 3 and preparation method thereof
Formula:
Fire resistance fibre used are as follows: Fanglun 1414 and Fanglun 1313
Composite fibre, wherein Fanglun 1414 is heart, and Fanglun 1313 is outer layer；
Mass percentage content are as follows: 3D fire resistance fibre 20%, 5D fire resistance fibre 30%, 7D fire resistance fibre 10%, 10D are fire-retardant
Fiber 20%, 15D fire resistance fibre 20%；
Preparation method: in addition to raw material, remaining step is same as Example 1.
A kind of fire-retardant filter cotton of embodiment 4 and preparation method thereof
Formula:
Fire resistance fibre used are as follows: Fanglun 1414 and Fanglun 1313
Composite fibre, wherein Fanglun 1313 is heart, and Fanglun 1414 is outer layer；
Mass percentage content are as follows: 3D fire resistance fibre 20%, 5D fire resistance fibre 30%, 7D fire resistance fibre 10%, 10D are fire-retardant
Fiber 20%, 15D fire resistance fibre 20%；
Preparation method: in addition to raw material, remaining step is same as Example 1.
A kind of fire-retardant filter cotton of comparative example 1 and preparation method thereof
Formula the difference from embodiment 1 is that: used fire resistance fibre mass percentage is different, 3D fire resistance fibre
Mass percentage is greater than preferred scope, remaining is respectively less than preferred scope；
That is mass percentage content are as follows: 3D fire resistance fibre 70%, 5D fire resistance fibre 10%, 7D fire resistance fibre 10%, 10D resistance
Fire fiber 6%, 15D fire resistance fibre 4%；
Preparation method: in addition to raw material, remaining step is same as Example 1.
A kind of fire-retardant filter cotton of comparative example 2 and preparation method thereof
Formula the difference from embodiment 1 is that: used fire resistance fibre mass percentage is different, 5D fire resistance fibre
Mass percentage is greater than preferred scope, remaining is respectively less than preferred scope；
That is mass percentage content are as follows: 3D fire resistance fibre 4%, 5D fire resistance fibre 60%, 7D fire resistance fibre 20%, 10D resistance
Fire fiber 12%, 15D fire resistance fibre 4%；
Preparation method: in addition to raw material, remaining step is same as Example 1.
A kind of fire-retardant filter cotton of comparative example 3 and preparation method thereof
Formula the difference from embodiment 1 is that: used fire resistance fibre mass percentage is different, the fire-retardant fibre of 10D
It ties up mass percentage and is greater than preferred scope, remaining is respectively less than preferred scope；
That is mass percentage content are as follows: 3D fire resistance fibre 4%, 5D fire resistance fibre 12%, 7D fire resistance fibre 12%, 10D resistance
Fire fiber 70%, 15D fire resistance fibre 2%；
Preparation method: in addition to raw material, remaining step is same as Example 1.
A kind of fire-retardant filter cotton of comparative example 4 and preparation method thereof
Formula the difference from embodiment 1 is that: used fire resistance fibre mass percentage is different, the fire-retardant fibre of 15D
It ties up mass percentage and is greater than preferred scope, remaining is respectively less than preferred scope；
That is mass percentage content are as follows: 3D fire resistance fibre 4%, 5D fire resistance fibre 14%, 7D fire resistance fibre 14%, 10D resistance
Fire fiber 18%, 15D fire resistance fibre 50%；
Preparation method: in addition to raw material, remaining step is same as Example 1.
To fire-retardant filter cotton temperature tolerance, initial resistance, the performance test of dust containing capacity, filtering partial size and average filter efficiency, survey
It is as shown in the table to try data:
Its heat resistance of fire resistance fibre type difference is significantly different it can be seen from upper table data, only with poly- paraphenylene terephthalamide
Its heat resisting temperature can only achieve 230 DEG C when p-phenylenediamine fiber is raw material, and be former with Fanglun 1313
Its heat resisting temperature is higher than heat resisting temperature when Fanglun 1414 is raw material when material, can reach 240 DEG C；
When two kinds of fibers are used in mixed way, i.e., Fanglun 1414 is heart, Fanglun 1313
When for outer layer, heat resisting temperature (245 DEG C) will be heart, poly- paraphenylene terephthalamide couple lower than Fanglun 1313
Fibers are the heat resisting temperature (250 DEG C) of outer layer, therefore use in process of production it can be seen from the above embodiments that
Two kinds of composite fibre, and using Fanglun 1313 as heart, Fanglun 1414 is outer
Layer can make the fire resistance fibre of production have good heat resistance.Meanwhile it can be seen that by comparative example 1-4 and using identical fibre
Type is tieed up, mass percent difference affects heat resistance to a certain extent, heat resistance is made to decrease to a certain extent,
Its heat resistance only up to reach 210 DEG C, and can significantly affect the initial resistance of fire resistance fibre, dust containing capacity, filtering partial size and
Average filtration efficiency, i.e., its more initial resistance of thinner fiber quality degree and dust containing capacity are bigger, and filtering partial size is smaller,
That is average filtration efficiency is higher.
Embodiment 5-11 and comparative example 5-8 is provided with according to auxiliary agent type difference
A kind of fire-retardant filter cotton of embodiment 5 and preparation method thereof
Formula:
Formula:
Fire resistance fibre used are as follows: Fanglun 1414 and Fanglun 1313
Composite fibre, wherein Fanglun 1313 is heart, and Fanglun 1414 is outer layer；
Mass percentage content are as follows: 3D fire resistance fibre 20%, 5D fire resistance fibre 30%, 7D fire resistance fibre 10%, 10D are fire-retardant
Fiber 20%, 15D fire resistance fibre 10%, glyceride citrate 5%, sorbitan monostearate 5%；
Preparation method: in addition to raw material, remaining step is same as Example 1.
A kind of fire-retardant filter cotton of embodiment 6 and preparation method thereof
Formula:
Fire resistance fibre used are as follows: Fanglun 1414 and Fanglun 1313
Composite fibre, wherein Fanglun 1313 is heart, and Fanglun 1414 is outer layer；
Mass percentage content are as follows: 3D fire resistance fibre 20%, 5D fire resistance fibre 30%, 7D fire resistance fibre 10%, 10D are fire-retardant
Fiber 20%, 15D fire resistance fibre 10%, polysorbate 5%, neopelex 5%；
Preparation method: in addition to raw material, remaining step is same as Example 1.
A kind of fire-retardant filter cotton of embodiment 7 and preparation method thereof
Formula:
Fire resistance fibre used are as follows: Fanglun 1414 and Fanglun 1313
Composite fibre, wherein Fanglun 1313 is heart, and Fanglun 1414 is outer layer；
Mass percentage content are as follows: 3D fire resistance fibre 20%, 5D fire resistance fibre 30%, 7D fire resistance fibre 10%, 10D are fire-retardant
Fiber 20%, 15D fire resistance fibre 15%, glyceride citrate 5%；
Preparation method: in addition to raw material, remaining step is same as Example 1.
A kind of fire-retardant filter cotton of embodiment 8 and preparation method thereof
Formula:
Fire resistance fibre used are as follows: Fanglun 1414 and Fanglun 1313
Composite fibre, wherein Fanglun 1313 is heart, and Fanglun 1414 is outer layer；
Mass percentage content are as follows: 3D fire resistance fibre 20%, 5D fire resistance fibre 30%, 7D fire resistance fibre 10%, 10D are fire-retardant
Fiber 20%, 15D fire resistance fibre 15%, polysorbate 5%；
Preparation method: in addition to raw material, remaining step is same as Example 1.
A kind of fire-retardant filter cotton of embodiment 9 and preparation method thereof
Formula:
Fire resistance fibre used are as follows: Fanglun 1414 and Fanglun 1313
Composite fibre, wherein Fanglun 1313 is heart, and Fanglun 1414 is outer layer；
Mass percentage content are as follows: 3D fire resistance fibre 20%, 5D fire resistance fibre 30%, 7D fire resistance fibre 10%, 10D are fire-retardant
Fiber 20%, 15D fire resistance fibre 15%, neopelex 5%；
Preparation method: in addition to raw material, remaining step is same as Example 1.
A kind of fire-retardant filter cotton of embodiment 10 and preparation method thereof
Formula:
Fire resistance fibre used are as follows: Fanglun 1414 and Fanglun 1313
Composite fibre, wherein Fanglun 1313 is heart, and Fanglun 1414 is outer layer；
Mass percentage content are as follows: 3D fire resistance fibre 20%, 5D fire resistance fibre 30%, 7D fire resistance fibre 10%, 10D are fire-retardant
Fiber 20%, 15D fire resistance fibre 15%, sorbitan monostearate 5%；
Preparation method: in addition to raw material, remaining step is same as Example 1.
A kind of fire-retardant filter cotton of embodiment 11 and preparation method thereof
Formula:
Fire resistance fibre used are as follows: Fanglun 1414 and Fanglun 1313
Composite fibre, wherein Fanglun 1313 is heart, and Fanglun 1414 is outer layer；
Mass percentage content are as follows: 3D fire resistance fibre 20%, 5D fire resistance fibre 30%, 7D fire resistance fibre 10%, 10D are fire-retardant
Fiber 20%, 15D fire resistance fibre 10%, neopelex 5%, sorbitan monostearate 5%, polysorbate 5%,
Glyceride citrate 5%；
Preparation method: in addition to raw material, remaining step is same as Example 1.
A kind of fire-retardant filter cotton of comparative example 5 and preparation method thereof
It is formulated the difference with embodiment 5 to be: changing auxiliary agent mass percentage content and ratio, is i.e. modification citric acid
Ester and sorbitan monostearate are 1: 4；
That is mass percentage content are as follows: 3D fire resistance fibre 20%, 5D fire resistance fibre 30%, 7D fire resistance fibre 10%, 10D resistance
Fire fiber 20%, 15D fire resistance fibre 10%, glyceride citrate 2%, sorbitan monostearate 8%；
Preparation method: in addition to raw material, remaining step is same as Example 1.
A kind of fire-retardant filter cotton of comparative example 6 and preparation method thereof
It is formulated the difference with embodiment 5 to be: changing auxiliary agent mass percentage content and ratio, is i.e. modification citric acid
Ester and sorbitan monostearate are 4: 1；
That is mass percentage content are as follows: 3D fire resistance fibre 20%, 5D fire resistance fibre 30%, 7D fire resistance fibre 10%, 10D resistance
Fire fiber 20%, 15D fire resistance fibre 10%, glyceride citrate: 8%, sorbitan monostearate 2%；
Preparation method: in addition to raw material, remaining step is same as Example 1.
A kind of fire-retardant filter cotton of comparative example 7 and preparation method thereof
Be formulated the difference with embodiment 5 to be: changing auxiliary agent mass percentage content makes its content be less than preferred scope most
Low value；
That is mass percentage content are as follows: 3D fire resistance fibre 20.5%, 5D fire resistance fibre 30%, 7D fire resistance fibre 10%, 10D
Fire resistance fibre 20%, 15D fire resistance fibre 19%, sorbitan monostearate 0.5%；
Preparation method: in addition to raw material, remaining step is same as Example 1.
A kind of fire-retardant filter cotton of comparative example 8 and preparation method thereof
Be formulated the difference with embodiment 5 to be: changing auxiliary agent mass percentage content makes its content be greater than preferred scope most
Big value；
That is mass percentage content are as follows: 3D fire resistance fibre 20%, 5D fire resistance fibre 30%, 7D fire resistance fibre 10%, 10D resistance
Fire fiber 15%, 15D fire resistance fibre 10%, sorbitan monostearate 15%；
Preparation method: in addition to raw material, remaining step is same as Example 1.
To fire-retardant filter cotton temperature tolerance, initial resistance, the performance test of dust containing capacity, filtering partial size and average filter efficiency, survey
It is as shown in the table to try data:
Its heat resistance of fire resistance fibre institute adding assistant type difference is significantly different it can be seen from upper table data and is apparently higher than
Heat resistance when non-adding assistant is only heart with Fanglun 1313, and poly(p-phenylene terephthalamide) is fine
Its heat resisting temperature can only achieve 250 DEG C when tieing up as outer layer as raw material, and it is preferred for being added after auxiliary agent and controlling institute's adding assistant
Ground glyceride citrate is used in mixed way with sorbitan monostearate, and controlling the two ratio is 1: 1, and heat resisting temperature may be up to
300 DEG C (embodiment 5)；And auxiliary agent used in embodiment 6-11 is that neopelex and polysorbate are used in mixed way,
Or single auxiliary agent its heat-resisting effect be all not so good as embodiment 1 effect it is good, the upper limit temperature of heat tolerance can only achieve 280 DEG C, though it is heat-resisting
Temperature ratio increased when not having adding assistant, but effect is not so good as embodiment 1, so the use of auxiliary agent being glyceride citrate and sorb
Smooth monostearate is used in mixed way, and controlling the two ratio is 1: 1, can significantly improve the heat resistance of fire resistance fibre；Meanwhile
It can be seen that by comparative example 5-6 using identical kinds of fibers, the auxiliary agent used is preferred glyceride citrate and sorb
Smooth monostearate, but its ratio is had adjusted, show that its heat resistance is substantially reduced by test result, it is resistance to non-adding assistant
Hot temperature difference is little, but its dust containing capacity and average filter efficiency are substantially reduced, so by adjusting auxiliary agent type and controlling
Its ratio can be very good to improve the heat resistance of fire resistance fibre and dust containing capacity and average filtration efficiency；It can by comparative example 7-8
Other than content to preferred scope to find out reduction and increase auxiliary agent, equally make its heat resistance, dust containing capacity and average filter efficiency
Be substantially reduced, i.e., only use auxiliary agent provided by the invention, and control its content and ratio can be only achieved it is provided by the invention most
High heat resisting temperature (300 DEG C), maximum dust containing capacity and highest average filtration efficiency (96%).
Only as described above, is only a preferred embodiment of the present invention, when the model that cannot limit implementation of the invention with this
It encloses, i.e., generally according to simple equivalent changes and modifications made by content documented by the claims in the present invention and description of the invention,
All it is still covered by the claims of the invention.It is searched in addition, abstract part and title are intended merely to auxiliary patent document
It seeks and being used, the interest field being not intended to limit the invention.
Claims (2)
1. a kind of fire-retardant filter cotton, it is characterised in that: the filter cotton includes following mass percentage: 3D fire resistance fibre
20%, 5D fire resistance fibre 30%, 7D fire resistance fibre 10%, 10D fire resistance fibre 20%, 15D fire resistance fibre 10-20%；
The fire-retardant filter cotton also includes auxiliary agent, the auxiliary agent be glyceride citrate and sorbitan monostearate, two
The ratio of person is 1: 1；
The fire resistance fibre are as follows: the mixing of Fanglun 1414 and Fanglun 1313
Fiber, wherein Fanglun 1313 is heart, and Fanglun 1414 is outer layer.
2. the preparation method of fire-retardant filter cotton described in claim 1, it is characterised in that: the following steps are included:
(1) auxiliary agent in formula is mixed in fibre-forming polymer, after being sufficiently mixed, the fibre-forming polymer melt after polycondensation is passed through
Cast Strip, pelletizing and be sliced, drying, melting, then spinning；
(2) fire resistance fibre is matched according to the ratio in formula, pours into blender by machine rotation stirring, each after claiming just weight
Kind raw material is uniformly mixed；
(3) coma uniformly spread out is transmitted to cubing-roll device by roller, is once opened by the agglomerating fiber that will be stirred
Then pine is sent to secondary fibre-opening unit by blower, coma is sent to blending box by blower after secondary shredding, is shaken by hair bucket
It is mixed；
(4) fiber is combed uniformly, the fiber combed is encrypted into lapping step by step, it is roasting by bottom screen feeding again to be paved into uniform stratum reticulare
Case；
(5) uniform cotton layer is sent into oven, set temperature oven low-melting fiber by various fiber obvolvents together from
And form synthetic fibers cotton.
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| CN108379934B (en) * | 2018-05-07 | 2020-12-01 | 江苏灵氟隆环境工程有限公司 | Dedusting antistatic filter material and preparation method thereof |
| CN108939690B (en) * | 2018-08-21 | 2021-07-09 | 河南省安克林滤业有限公司 | High-grade fireproof flame-retardant filter cotton for high-speed motor train unit and preparation method thereof |
| CN109603353A (en) * | 2018-12-15 | 2019-04-12 | 石家庄海飞音机电设备有限公司 | A kind of fire-retardant filter cotton and its production technology |
| CN110124388A (en) * | 2019-04-25 | 2019-08-16 | 苏州托普斯环保科技有限公司 | A kind of fire-retardant dust-proof multiple filtration non-woven fabrics |
| CN115652652A (en) * | 2022-11-14 | 2023-01-31 | 东华大学 | Smoke filtering type flame-retardant warm-keeping flocculus and preparation method thereof |
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| CN102343185A (en) * | 2010-08-04 | 2012-02-08 | 上海洁润丝新材料股份有限公司 | Non-glue cotton nonwoven filtering material and its preparation method |
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| CN101219309A (en) * | 2007-09-29 | 2008-07-16 | 丹东天皓净化材料有限公司 | Method for processing DE type flame-proof filtering cotton |
| CN102343185A (en) * | 2010-08-04 | 2012-02-08 | 上海洁润丝新材料股份有限公司 | Non-glue cotton nonwoven filtering material and its preparation method |
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