CN107488758A - A kind of preparation method of flame-retardant leather - Google Patents
A kind of preparation method of flame-retardant leather Download PDFInfo
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- CN107488758A CN107488758A CN201710928905.9A CN201710928905A CN107488758A CN 107488758 A CN107488758 A CN 107488758A CN 201710928905 A CN201710928905 A CN 201710928905A CN 107488758 A CN107488758 A CN 107488758A
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C1/00—Chemical treatment prior to tanning
- C14C1/08—Deliming; Bating; Pickling; Degreasing
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/08—Chemical tanning by organic agents
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/28—Multi-step processes
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/30—Chemical tanning using physical means combined with chemical means
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C9/00—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention discloses a kind of preparation method of flame-retardant leather, belong to neg material technical field.The present invention impregnates wet blue leather, water and degreasing agent, and single treatment leather is made；By single treatment leather, water, retanning agent is added, impregnated, after-treatment leather is made；By after-treatment leather, water and retanning agent dipping, it is made and handles leather three times；Leather, water and acrylic resin tanning agent dipping will be handled three times, be added amino resins and amino resins filling tannin extract filling, will be added acrylate resin tanning agent, four processing leathers are made；Leather is handled by four times, water, adds dipping fatting agent, five processing leathers are made；It is stifling with after microwax steam steaming through trimethyl aluminium nitrogen by five processing leathers and water retting, obtain stifling leather；Stifling leather and polyallylamine solution are impregnated, Frozen-thawed cycled, add organic silicon emulsion and nano silicon dipping, dry, produce flame-retardant leather.Flame-retardant leather provided by the invention has excellent anti-flammability.
Description
Technical field
The invention discloses a kind of preparation method of flame-retardant leather, belong to neg material technical field.
Background technology
Leather is through the not perishable Animal Skin of denaturation obtained by physics, the chemical process such as depilation and tanning.Leather
It is made up of natural protein fibre in three dimensions close weave, there is a kind of special grain layer on its surface, has nature
Graining and gloss, comfortable feel.
Leather itself has remarkable ventilative, adiabatic, resistance to ageing, sweat proof, resistance to as a kind of material of function admirable
Grind, be anti-puncture, holding the features such as flexible, service life is long, being widely used in the every field of production and living.It is but near
Nian Lai, fire generation is further frequent, and personnel caused by fire and property loss are extremely serious.The burning of leather and fur products mainly by
Cause leather and fur products propagating combustion when other materials are burnt, make fire continue to carry out, the development of anti-flammability leather substance, will have
Beneficial to the loss for reducing people's lives and properties, social harmonious development is kept.Leather as a kind of modified product of natural material, than
It is easier to burn.In order to avoid the generation of fire, loss caused by reduction fire is possible, improving the fire resistance of leather turns into pass
One of focus of note.
Present flame-retardant leather, mainly optimize technique method and application fire retardant method.Optimize technique method is in tanning production
During, by improving production technology the flame retardant effect that makes leather reach certain；And apply fire retardant method, it is exactly by fire retardant
It is added in the form of leather chemicals in leather, plays its fire retardation.Retanning procedures are a weights in leather production process
The process wanted, this process assign performance characteristics and the styles such as different mechanics, chemistry and the feels of leather, but in this course
Some high polymer materials, such as syntans, acrylic resin, tannin extract can be added, leather can be caused flammable, therefore in retanning work
A certain amount of fire retardant is added in sequence, there is certain feasibility to improve the fire resistance of leather with this.Research is to leather
Fire-retardant influence, suitable fire retardant and dosage are screened, improving Leather Flame Retardant can be particularly significant.To meet automobile cushion, sofa,
Protective garment etc. has the industry of special requirement to flame-retardant leather, protects people life property safety significant.
The content of the invention
The present invention solves the technical problem of：For conventional leather it is inflammable the problem of, there is provided a kind of flame-retardant leather
Preparation method.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：
By wet blue through pickling → retanning → neutralization → filling → stuffing → flame retardant treatment, flame-retardant leather is finally made；
（1）Described pickling is to launch wet blue leather into rotary drum, adds the water and wet blue leather weight of 3~4 times of wet blue leather weight
0.02~0.03 times of degreasing agent, heating rotate dipping, then add the hydrochloric acid regulation drum of 0.03~0.04 times of wet blue leather weight
Interior pH value, adds the water of 3~4 times of wet blue leather weight, and cooling is rotated further dipping, draining, single treatment leather is made；
（2）Described retanning is that single treatment leather is put into rotary drum, adds the water of 3~4 times of wet blue leather weight, adds indigo plant
The retanning agent of wet 0.01~0.02 times of weight of leather, rotates dipping, adds the water of 4~5 times of wet blue leather weight, and cooling is rotated further leaching
Stain, draining, after-treatment leather is made；
（3）Described neutralization is that after-treatment leather is put into rotary drum, adds the water of 3~4 times of wet blue leather weight, adds indigo plant
The neutralizing retanning agent of wet 0.01~0.02 times of weight of leather, rotates dipping, adds wet blue leather 4~5 times of water of weight, cooling is rotated further
Dipping, draining, it is made and handles leather three times；
（4）Described filling is that processing leather three times is put into rotary drum, adds the water of 3~4 times of wet blue leather weight, adds indigo plant
The acrylic resin tanning agent of wet 0.03~0.04 times of weight of leather, rotates dipping, adds 0.01~0.02 times of wet blue leather weight
Amino resins and amino resins filling tannin extract fiberfill fibers gap, rotate dipping, add wet blue leather weight 0.001~
0.002 times of small molecule acrylate resin tanning agent, it is eventually adding the first acid for adjusting pH of 0.001~0.002 times of wet blue leather weight
Value, adds the water of 1~2 times of wet blue leather weight, and heating rotates dipping, draining, four processing leathers is made；
（5）Described stuffing is that four processing leathers are put into rotary drum, adds 2~3 times of water of wet blue leather weight, adds
The dipping fatting agent of 0.01~0.02 times of wet blue leather weight, the formic acid for adding 0.001~0.002 times of wet blue leather weight adjust pH
Value, 3~4 times of water of wet blue leather weight is added, dipping is rotated under normal temperature, draining, five processing leathers are made；
（6）Described flame retardant treatment is that five processing leathers are put into rotary drum, adds 2~3 times of water of wet blue leather weight, from
So dry, fumigated through nitrogen containing trimethyl aluminium, after microwax steam steaming, scrape off the microwax of leather surface, obtain stifling skin
Leather；
（7）Stifling leather is put into rotary drum, adds the polyallylamine solution of 3~4 times of wet blue leather weight, rotates dipping, freeze thawing
Circulation, organic silicon emulsion and nano silicon dipping are added, naturally dry, produces flame-retardant leather.
（1）Described in pickling degreasing agent be ON-C, acid is formic acid and oxalic acid, wherein, the addition of formic acid is wet blue leather weight
0.001~0.002 times of amount, the addition of oxalic acid are 0.001~0.002 times of wet blue leather weight.
（1）Described in retanning agent be acrylic resin retanning agent, amino resins retanning agent or Researches on Tanning of Oxazolidines.
The acrylic resin is MA-14 and LEUKOTAN970, wherein, MA-14 addition is wet blue leather weight
0.01~0.02 times, LEUKOTAN970 addition is 0.01~0.02 times of wet blue leather weight.
（3）Described in neutralizing retanning agent be PAK-N-C, sodium formate and sodium bicarbonate, wherein, PAK-N-C addition is indigo plant
0.02~0.03 times of wet leather weight, the addition of sodium formate is 0.02~0.03 times of wet blue leather weight, the addition of sodium bicarbonate
Measure as 0.02~0.03 times of wet blue leather weight.
（4）Described in acrylic resin tanning agent be SA-09, MAS and HA-16, wherein, SA-09 addition is blue wet
Remove from office weight 0.05~0.06 times, MAS addition are 0.04~0.05 times of wet blue leather weight, and HA-16 addition is indigo plant
0.03~0.04 times of wet leather weight；The amino resins filling tannin extract is DLF and JintanME, wherein, sharp tan pellet DLF's adds
Enter 0.04~0.05 times that amount is wet blue leather percetage by weight, JintanME addition is the 0.02 of wet blue leather percetage by weight
~0.03 times, the small molecule acrylate resin tanning agent is LEUKOTAN970.
（5）Described in dipping fatting agent be EW, ATLASOL178, PROPUKT3531 and UFB/W, wherein, EW additions are
0.02~0.03 times of wet blue leather weight, ATLASOL178 additions are 0.02~0.03 times of wet blue leather weight,
PROPUKT3531 additions are 0.02~0.03 times of wet blue leather weight, UFB/W additions for wet blue leather weight 0.02~
0.03 times.
（6）Described in nitrogen containing trimethyl aluminium trimethyl aluminium volume content be 5~6%.
（7）Described in organic silicon emulsion be 40~50%.
The beneficial effects of the invention are as follows：
（1）The present invention soaks leather by polyallylamine solution, on the one hand, polyallylamine is penetrated into leather, in room temperature
Under the conditions of, polyallylamine reacts with carbon dioxide, and the product of generation spontaneously forms stabilization due to the interaction between electric charge
Three-dimensional network, and form stable three-dimensional network and be closely wound braiding in three dimensions with forming the native protein of leather and hand over
Connection, further enhance the toughness of leather；On the other hand, under the conditions of high temperature of fire, polyallylamine gel heat release titanium dioxide
Carbon, the generation of carbon dioxide, can effective blocking oxygen, play the flame retardant effect at initial stage；
（2）The present invention fumigates leather by nitrogen containing trimethyl aluminium and nitrogen containing microwax, is fumigated in nitrogen containing trimethyl aluminium
During, it is finally only internal to contain a small amount of water, front three for process from outward appearance to inner essence due to drying leather in the drying process
Base aluminium is met water after leather inside is penetrated into during fumigating and hydrolyzed, and hydrolysis generation aluminium hydroxide is deposited on inside leather,
The mechanical property of leather being enhanced, secondly, during nitrogen containing microwax is stifling so that microwax is infiltrated through inside leather,
Under the conditions of high temperature of fire, aluminium hydroxide dehydration generation aluminum oxide, when microwax melting is oozed out, aluminum oxide is carried to leather table
Face, meanwhile, organic silicon emulsion and nano silicon under the high temperature conditions, crosslink, shape all containing a large amount of active silicone hydroxyls
Into three-dimensional crosslinked network is stablized, aluminum oxide is fixed on leather surface, one layer of aluminum oxide flame-retardant layer is formed, improves the long-term of leather
Flame retardant effect.
Embodiment
Wet blue leather is launched into rotary drum, then the water and wet blue leather weight of 3~4 times of wet blue leather weight are added into rotary drum
0.02~0.03 times of degreasing agent, under the conditions of temperature is 40~50 DEG C, 1~2h of dipping is rotated, it is blue then to being added in rotary drum
The mass fraction of wet 0.03~0.04 times of weight of leather adds for pH value in 9~10% hydrochloric acid regulation drum to 3.5~3.8, then into rotary drum
Enter the water of 3~4 times of wet blue leather weight, under the conditions of temperature is 30~40 DEG C, is rotated further 10~20min of dipping, draining, is made
Single treatment leather；Single treatment leather is put into rotary drum, then to the water that 3~4 times of wet blue leather weight is added in rotary drum, then
The retanning agent of 0.01~0.02 times of wet blue leather weight is added, under the conditions of temperature is 40~50 DEG C, rotates 40~60min of dipping,
Then to the water that 4~5 times of wet blue leather weight is added in rotary drum, under the conditions of temperature is 35~40 DEG C, be rotated further dipping 10~
20min, draining, after-treatment leather is made；After-treatment leather is put into rotary drum, into rotary drum and adds wet blue leather weight
3~4 times of water, then add into rotary drum the neutralizing retanning agent of 0.01~0.02 times of wet blue leather weight, in temperature be 40~50 DEG C
Under the conditions of, rotate dipping 40~60min, then in rotary drum add wet blue leather 4~5 times of water of weight, in temperature be 35~40 DEG C
Under the conditions of, 10~20min of dipping is rotated further, draining, is made and handles leather three times；Leather will be handled three times to be put into rotary drum,
And the water of 3~4 times of wet blue leather weight is added into rotary drum, then the propylene of 0.03~0.04 times of wet blue leather weight is added into rotary drum
Acid resin tanning agent, under the conditions of temperature is 40~50 DEG C, 1~2h of dipping is rotated, then to addition wet blue leather weight in rotary drum
0.01~0.02 times of amino resins and amino resins filling tannin extract fiberfill fibers gap, under the conditions of temperature is 40~50 DEG C,
40~60min of dipping is rotated, then the small molecule acrylate resin tanning of 0.001~0.002 times of wet blue leather weight is added into rotary drum
Agent, the first acid for adjusting pH value of 0.001~0.002 times of wet blue leather weight is eventually adding to 4.1~4.2 and adds wet blue leather weight 1
~2 times of water, under the conditions of temperature is 60~65 DEG C, 40~60min of dipping is rotated, draining, four processing leathers are made；By four
Secondary processing leather is put into rotary drum, adds 2~3 times of water of wet blue leather weight, then wet blue leather weight 0.01 is added into rotary drum
~0.02 times of dipping fatting agent, and the formic acid of 0.001~0.002 times of addition wet blue leather weight adjusts pH value to 3.2 into rotary drum
~3.3,3~4 times of water of wet blue leather weight is added, dipping is rotated under normal temperature, draining, five processing leathers are made；By five times
Processing leather is put into rotary drum, and 2~3 times of water of wet blue leather weight is added into rotary drum, obtains wet leather, then wet leather is put
Under room temperature condition, 1~2h is spontaneously dried, the drying leather that moisture content is 8~10% is obtained, is first fumigated through nitrogen containing trimethyl aluminium,
Again through microwax steam steaming, the microwax of leather surface is then scraped off, obtains stifling leather, stifling leather is put into rotary drum,
The mass fraction for adding 3~4 times of wet blue leather weight is 20~30% polyallylamine solution, after rotating 40~50min of dipping, is taken out,
Leather must be pre-processed, then pretreatment leather is placed in refrigerator-freezer, is taken after freezing 1~2h under the conditions of being -10~-20 DEG C in temperature
Go out, be placed under room temperature condition and thaw 2~3 days, after such Frozen-thawed cycled 5~10 times, obtain freeze thawing treatment leather, then by freeze thawing treatment
Leather is put into rotary drum, then organic silicon emulsion and nano silicon are added into rotary drum, 1~2h of dipping is rotated, in room temperature bar
The aqueous aluminium of naturally dry is 8~10% under part, produces flame-retardant leather.The degreasing agent is ON-C, and acid is formic acid and oxalic acid, wherein,
The addition of formic acid is 0.001~0.002 times of wet blue leather weight, the addition of oxalic acid for wet blue leather weight 0.001~
0.002 times.The retanning agent is acrylic resin retanning agent, amino resins retanning agent or Researches on Tanning of Oxazolidines.The acrylic acid tree
Fat is MA-14 and LEUKOTAN970, wherein, MA-14 addition is 0.01~0.02 times of wet blue leather weight,
LEUKOTAN970 addition is 0.01~0.02 times of wet blue leather weight.The neutralizing retanning agent is PAK-N-C, sodium formate
And sodium bicarbonate, wherein, PAK-N-C addition is 0.02~0.03 times of wet blue leather weight, and the addition of sodium formate is blue wet
Remove from office weight 0.02~0.03 times, the addition of sodium bicarbonate are 0.02~0.03 times of wet blue leather weight.The acrylic compounds tree
Fat tanning agent is SA-09, MAS and HA-16, wherein, SA-09 addition is 0.05~0.06 times of wet blue leather weight, MAS's plus
Enter 0.04~0.05 times that amount is wet blue leather weight, HA-16 addition is 0.03~0.04 times of wet blue leather weight；The ammonia
Base resin filling tannin extract is DLF and JintanME, wherein, sharp tan pellet DLF addition is the 0.04 of wet blue leather percetage by weight
~0.05 times, JintanME addition is 0.02~0.03 times of wet blue leather percetage by weight, the small molecule acrylic acid tree
Fat tanning agent is LEUKOTAN970.The dipping fatting agent is EW, ATLASOL178, PROPUKT3531 and UFB/W, wherein, EW
Addition is 0.02~0.03 times of wet blue leather weight, and ATLASOL178 additions are 0.02~0.03 times of wet blue leather weight,
PROPUKT3531 additions are 0.02~0.03 times of wet blue leather weight, UFB/W additions for wet blue leather weight 0.02~
0.03 times.Trimethyl aluminium volume content is 5~6% in the nitrogen containing trimethyl aluminium.The organic silicon emulsion is 40~50%.
Example 1
Wet blue leather is launched into rotary drum, then adds into rotary drum 0.03 times of the water and wet blue leather weight of 4 times of wet blue leather weight
Degreasing agent, under the conditions of temperature is 50 DEG C, dipping 2h is rotated, then to the quality point that 0.04 times of wet blue leather weight is added in rotary drum
Number is pH value in 10% hydrochloric acid regulation drum to 3.8, then the water of 4 times of wet blue leather weight is added into rotary drum, in temperature be 40 DEG C of conditions
Under, dipping 20min is rotated further, draining, single treatment leather is made；Single treatment leather is put into rotary drum, then to turn
The water of 4 times of wet blue leather weight is added in drum, adds the retanning agent of 0.02 times of wet blue leather weight, under the conditions of temperature is 50 DEG C,
Dipping 60min is rotated, then to the water that 5 times of wet blue leather weight is added in rotary drum, under the conditions of temperature is 40 DEG C, is rotated further leaching
Stain 20min, draining, after-treatment leather is made；After-treatment leather is put into rotary drum, into rotary drum and adds wet blue leather weight
4 times of water is measured, then the neutralizing retanning agent of 0.02 times of wet blue leather weight is added into rotary drum, under the conditions of temperature is 50 DEG C, is rotated
60min is impregnated, then to wet blue leather 5 times of water of weight are added in rotary drum, under the conditions of temperature is 40 DEG C, is rotated further dipping
20min, draining, it is made and handles leather three times；Leather will be handled three times to be put into rotary drum, and wet blue leather weight is added into rotary drum
4 times of water, then the acrylic resin tanning agent of 0.04 times of wet blue leather weight is added into rotary drum, under the conditions of temperature is 50 DEG C,
Dipping 2h is rotated, it is fine then to the amino resins and amino resins filling tannin extract filling that 0.02 times of wet blue leather weight is added in rotary drum
Gap is tieed up, under the conditions of temperature is 50 DEG C, rotates dipping 60min, then adds into rotary drum small point of 0.002 times of wet blue leather weight
Sub- acrylate resin tanning agent, the first acid for adjusting pH value of 0.002 times of wet blue leather weight is eventually adding to 4.2 and adds wet blue leather weight
2 times of water, under the conditions of temperature is 65 DEG C, dipping 60min is rotated, draining, four processing leathers are made；Leather is handled by four times
It is put into rotary drum, adds 3 times of water of wet blue leather weight, then the dipping stuffing of 0.02 times of wet blue leather weight is added into rotary drum
Agent, and the formic acid for adding into rotary drum 0.002 times of wet blue leather weight adjusts pH value to 3.3, adds 4 times of water of wet blue leather weight,
Dipping is rotated under normal temperature, draining, five processing leathers are made；Five processing leathers are put into rotary drum, and added into rotary drum
3 times of water of wet blue leather weight, wet leather is obtained, then wet leather is placed under room temperature condition, spontaneously dry 2h, obtaining moisture content is
10% drying leather, first fumigated through nitrogen containing trimethyl aluminium, then through microwax steam steaming, then scrape off the micro- of leather surface
Brilliant wax, stifling leather is obtained, stifling leather is put into rotary drum, the mass fraction for adding 4 times of wet blue leather weight is 30% polyallylamine
Solution, after rotating dipping 50min, take out, obtain pretreatment leather, then pretreatment leather is placed in refrigerator-freezer, in temperature be -20 DEG C
Under the conditions of freeze 2h after take out, be placed under room temperature condition and thaw 3 days, after such Frozen-thawed cycled 10 times, obtain freeze thawing treatment leather, then
Freeze thawing treatment leather is put into rotary drum, then organic silicon emulsion and nano silicon are added into rotary drum, rotates dipping 2h, in
The aqueous aluminium of naturally dry is 10% under room temperature condition, produces flame-retardant leather.The degreasing agent is ON-C, and acid is formic acid and oxalic acid, its
In, the addition of formic acid is 0.002 times of wet blue leather weight, and the addition of oxalic acid is 0.002 times of wet blue leather weight.It is described multiple
Tanning agent is acrylic resin retanning agent, amino resins retanning agent or Researches on Tanning of Oxazolidines.The acrylic resin be MA-14 and
LEUKOTAN970, wherein, MA-14 addition is 0.02 times of wet blue leather weight, and LEUKOTAN970 addition is blue wet
Remove from office weight 0.02 times.The neutralizing retanning agent is PAK-N-C, sodium formate and sodium bicarbonate, wherein, PAK-N-C addition is
0.03 times of wet blue leather weight, the addition of sodium formate are 0.03 times of wet blue leather weight, and the addition of sodium bicarbonate is wet blue leather
0.03 times of weight.The acrylic resin tanning agent is SA-09, MAS and HA-16, wherein, SA-09 addition is blue wet
Remove from office weight 0.06 times, MAS addition are 0.05 times of wet blue leather weight, and HA-16 addition is wet blue leather weight
0.04 times；The amino resins filling tannin extract is DLF and JintanME, wherein, sharp tan pellet DLF addition is wet blue leather weight
0.05 times of percentage, JintanME addition are 0.03 times of wet blue leather percetage by weight, the small molecule acrylic acid tree
Fat tanning agent is LEUKOTAN970.The dipping fatting agent is EW, ATLASOL178, PROPUKT3531 and UFB/W, wherein, EW
Addition is 0.03 times of wet blue leather weight, and ATLASOL178 additions are 0.03 times of wet blue leather weight, and PROPUKT3531 adds
Enter 0.03 times that amount is wet blue leather weight, UFB/W additions are 0.03 times of wet blue leather weight.In the nitrogen containing trimethyl aluminium
Trimethyl aluminium volume content is 6%.The organic silicon emulsion is 50%.
Example 2
Wet blue leather is launched into rotary drum, then adds into rotary drum 0.03 times of the water and wet blue leather weight of 4 times of wet blue leather weight
Degreasing agent, under the conditions of temperature is 50 DEG C, dipping 2h is rotated, then to the quality point that 0.04 times of wet blue leather weight is added in rotary drum
Number is pH value in 10% hydrochloric acid regulation drum to 3.8, then the water of 4 times of wet blue leather weight is added into rotary drum, in temperature be 40 DEG C of conditions
Under, dipping 20min is rotated further, draining, single treatment leather is made；Single treatment leather is put into rotary drum, then to turn
The water of 4 times of wet blue leather weight is added in drum, adds the retanning agent of 0.02 times of wet blue leather weight, under the conditions of temperature is 50 DEG C,
Dipping 60min is rotated, then to the water that 5 times of wet blue leather weight is added in rotary drum, under the conditions of temperature is 40 DEG C, is rotated further leaching
Stain 20min, draining, after-treatment leather is made；After-treatment leather is put into rotary drum, into rotary drum and adds wet blue leather weight
4 times of water is measured, then the neutralizing retanning agent of 0.02 times of wet blue leather weight is added into rotary drum, under the conditions of temperature is 50 DEG C, is rotated
60min is impregnated, then to wet blue leather 5 times of water of weight are added in rotary drum, under the conditions of temperature is 40 DEG C, is rotated further dipping
20min, draining, it is made and handles leather three times；Leather will be handled three times to be put into rotary drum, and wet blue leather weight is added into rotary drum
4 times of water, then the acrylic resin tanning agent of 0.04 times of wet blue leather weight is added into rotary drum, under the conditions of temperature is 50 DEG C,
Dipping 2h is rotated, it is fine then to the amino resins and amino resins filling tannin extract filling that 0.02 times of wet blue leather weight is added in rotary drum
Gap is tieed up, under the conditions of temperature is 50 DEG C, rotates dipping 60min, then adds into rotary drum small point of 0.002 times of wet blue leather weight
Sub- acrylate resin tanning agent, the first acid for adjusting pH value of 0.002 times of wet blue leather weight is eventually adding to 4.2 and adds wet blue leather weight
2 times of water, under the conditions of temperature is 65 DEG C, dipping 60min is rotated, draining, four processing leathers are made；Leather is handled by four times
It is put into rotary drum, adds 3 times of water of wet blue leather weight, then the dipping stuffing of 0.02 times of wet blue leather weight is added into rotary drum
Agent, and the formic acid for adding into rotary drum 0.002 times of wet blue leather weight adjusts pH value to 3.3, adds 4 times of water of wet blue leather weight,
Dipping is rotated under normal temperature, draining, five processing leathers are made；Five processing leathers are put into rotary drum, and added into rotary drum
3 times of water of wet blue leather weight, wet leather is obtained, then wet leather is placed under room temperature condition, spontaneously dry 2h, obtaining moisture content is
10% drying leather, first fumigated through nitrogen containing trimethyl aluminium, then through microwax steam steaming, then scrape off the micro- of leather surface
Brilliant wax, pretreatment leather is obtained, then pretreatment leather is placed in refrigerator-freezer, taken out, put after freezing 2h under the conditions of being -20 DEG C in temperature
Thawed 3 days under room temperature condition, after such Frozen-thawed cycled 10 times, obtain freeze thawing treatment leather, then freeze thawing treatment leather is put into and turned
In drum, then organic silicon emulsion and nano silicon are added into rotary drum, rotate dipping 2h, naturally dry contains under room temperature condition
Water aluminium is 10%, produces flame-retardant leather.The degreasing agent is ON-C, and acid is formic acid and oxalic acid, wherein, the addition of formic acid is indigo plant
0.002 times of wet leather weight, the addition of oxalic acid is 0.002 times of wet blue leather weight.The retanning agent is answered for acrylic resin
Tanning agent, amino resins retanning agent or Researches on Tanning of Oxazolidines.The acrylic resin is MA-14 and LEUKOTAN970, wherein, MA-14
Addition be 0.02 times of wet blue leather weight, LEUKOTAN970 addition is 0.02 times of wet blue leather weight.The neutralization
Retanning agent is PAK-N-C, sodium formate and sodium bicarbonate, wherein, PAK-N-C addition is 0.03 times of wet blue leather weight, formic acid
The addition of sodium is 0.03 times of wet blue leather weight, and the addition of sodium bicarbonate is 0.03 times of wet blue leather weight.The acrylic acid
Resinoid tanning agent is SA-09, MAS and HA-16, wherein, SA-09 addition is 0.06 times of wet blue leather weight, MAS addition
Measure as 0.05 times of wet blue leather weight, HA-16 addition is 0.04 times of wet blue leather weight；The amino resins fills tannin extract
For DLF and JintanME, wherein, sharp tan pellet DLF addition is 0.05 times of wet blue leather percetage by weight, JintanME's plus
Enter 0.03 times that amount is wet blue leather percetage by weight, the small molecule acrylate resin tanning agent is LEUKOTAN970.The dipping
Fatting agent is EW, ATLASOL178, PROPUKT3531 and UFB/W, wherein, EW additions are 0.03 times of wet blue leather weight,
ATLASOL178 additions are 0.03 times of wet blue leather weight, and PROPUKT3531 additions are 0.03 times of wet blue leather weight,
UFB/W additions are 0.03 times of wet blue leather weight.Trimethyl aluminium volume content is 6% in the nitrogen containing trimethyl aluminium.It is described
Organic silicon emulsion is 50%.
Example 3
Wet blue leather is launched into rotary drum, then adds into rotary drum 0.03 times of the water and wet blue leather weight of 4 times of wet blue leather weight
Degreasing agent, under the conditions of temperature is 50 DEG C, dipping 2h is rotated, then to the quality point that 0.04 times of wet blue leather weight is added in rotary drum
Number is pH value in 10% hydrochloric acid regulation drum to 3.8, then the water of 4 times of wet blue leather weight is added into rotary drum, in temperature be 40 DEG C of conditions
Under, dipping 20min is rotated further, draining, single treatment leather is made；Single treatment leather is put into rotary drum, then to turn
The water of 4 times of wet blue leather weight is added in drum, adds the retanning agent of 0.02 times of wet blue leather weight, under the conditions of temperature is 50 DEG C,
Dipping 60min is rotated, then to the water that 5 times of wet blue leather weight is added in rotary drum, under the conditions of temperature is 40 DEG C, is rotated further leaching
Stain 20min, draining, after-treatment leather is made；After-treatment leather is put into rotary drum, into rotary drum and adds wet blue leather weight
4 times of water is measured, then the neutralizing retanning agent of 0.02 times of wet blue leather weight is added into rotary drum, under the conditions of temperature is 50 DEG C, is rotated
60min is impregnated, then to wet blue leather 5 times of water of weight are added in rotary drum, under the conditions of temperature is 40 DEG C, is rotated further dipping
20min, draining, it is made and handles leather three times；Leather will be handled three times to be put into rotary drum, and wet blue leather weight is added into rotary drum
4 times of water, then the acrylic resin tanning agent of 0.04 times of wet blue leather weight is added into rotary drum, under the conditions of temperature is 50 DEG C,
Dipping 2h is rotated, it is fine then to the amino resins and amino resins filling tannin extract filling that 0.02 times of wet blue leather weight is added in rotary drum
Gap is tieed up, under the conditions of temperature is 50 DEG C, rotates dipping 60min, then adds into rotary drum small point of 0.002 times of wet blue leather weight
Sub- acrylate resin tanning agent, the first acid for adjusting pH value of 0.002 times of wet blue leather weight is eventually adding to 4.2 and adds wet blue leather weight
2 times of water, under the conditions of temperature is 65 DEG C, dipping 60min is rotated, draining, four processing leathers are made；Leather is handled by four times
It is put into rotary drum, adds 3 times of water of wet blue leather weight, then the dipping stuffing of 0.02 times of wet blue leather weight is added into rotary drum
Agent, and the formic acid for adding into rotary drum 0.002 times of wet blue leather weight adjusts pH value to 3.3, adds 4 times of water of wet blue leather weight,
Dipping is rotated under normal temperature, draining, five processing leathers are made；Five processing leathers are put into rotary drum, add wet blue leather weight 4
Mass fraction again is 30% polyallylamine solution, after rotating dipping 50min, takes out, obtains pretreatment leather, then will pre-process skin
Leather is placed in refrigerator-freezer, is taken out after freezing 2h under the conditions of being -20 DEG C in temperature, is placed under room temperature condition and thaws 3 days, such freeze thawing follows
After ring 10 times, obtain freeze thawing treatment leather, then freeze thawing treatment leather be put into rotary drum, then into rotary drum add organic silicon emulsion and
Nano silicon, dipping 2h is rotated, the aqueous aluminium of naturally dry is 10% under room temperature condition, produces flame-retardant leather.The degreasing
Agent is ON-C, and acid is formic acid and oxalic acid, wherein, the addition of formic acid is 0.002 times of wet blue leather weight, and the addition of oxalic acid is
0.002 times of wet blue leather weight.The retanning agent is acrylic resin retanning agent, amino resins retanning agent or Researches on Tanning of Oxazolidines.
The acrylic resin is MA-14 and LEUKOTAN970, wherein, MA-14 addition is 0.02 times of wet blue leather weight,
LEUKOTAN970 addition is 0.02 times of wet blue leather weight.The neutralizing retanning agent is PAK-N-C, sodium formate and little Su
Beat, wherein, PAK-N-C addition is 0.03 times of wet blue leather weight, and the addition of sodium formate is the 0.03 of wet blue leather weight
Times, the addition of sodium bicarbonate is 0.03 times of wet blue leather weight.The acrylic resin tanning agent is SA-09, MAS and HA-16,
Wherein, SA-09 addition is 0.06 times of wet blue leather weight, and MAS addition is 0.05 times of wet blue leather weight, HA-16
Addition be 0.04 times of wet blue leather weight；The amino resins filling tannin extract is DLF and JintanME, wherein, Li Roudan
DLF addition is 0.05 times of wet blue leather percetage by weight, and JintanME addition is wet blue leather percetage by weight
0.03 times, the small molecule acrylate resin tanning agent is LEUKOTAN970.It is described dipping fatting agent be EW, ATLASOL178,
PROPUKT3531 and UFB/W, wherein, EW additions are 0.03 times of wet blue leather weight, and ATLASOL178 additions are wet blue leather
0.03 times of weight, PROPUKT3531 additions are 0.03 times of wet blue leather weight, and UFB/W additions are wet blue leather weight
0.03 times.The organic silicon emulsion is 50%.
Comparative example：The leather of Shanghai leather and fur products Co., Ltd production.
The gained of example 1 to 3 leather and comparative example product are subjected to performance detection, specific detection method is as follows：
Oxygen index (OI) is detected according to ASTMD2863, it is that 5.0cm × 5.0cm samples keep the 3min that burns in oxygen nitrogen mixture, is surveyed
The percentage of minimum oxygen volumetric concentration required for going out；The detection device of smoke density is smoke density case, method be by 5.0cm ×
5.2cm sample is horizontal positioned on casing inner support, and during experiment, sample burns in case produces smog, determines through smog
Collimated light beam light transmittance change, record maximum transmission rate.Measured smoke density is the maximum transmission recorded in 3min
Rate, record the maximum of appearance.Specific testing result is as shown in table 1：
Table 1
| Detection content | Example 1 | Example 2 | Example 3 | Comparative example |
| Oxygen index (OI)/% | 31.2 | 29.7 | 29.9 | 29.3 |
| Smoke density | 33 | 43 | 45 | 52 |
From the testing result of table 1, obtained flame-retardant leather of the present invention has good fire resistance, and it is inflammable to solve conventional leather
The problem of.
Claims (9)
- A kind of 1. preparation method of flame-retardant leather, it is characterised in that：By wet blue through pickling → retanning → neutralization → filling → plus Fat → flame retardant treatment, flame-retardant leather is finally made；（1）Described pickling is to launch wet blue leather into rotary drum, adds the water and wet blue leather weight of 3~4 times of wet blue leather weight 0.02~0.03 times of degreasing agent, heating rotate dipping, then add the hydrochloric acid regulation drum of 0.03~0.04 times of wet blue leather weight Interior pH value, adds the water of 3~4 times of wet blue leather weight, and cooling is rotated further dipping, draining, single treatment leather is made；（2）Described retanning is that single treatment leather is put into rotary drum, adds the water of 3~4 times of wet blue leather weight, adds indigo plant The retanning agent of wet 0.01~0.02 times of weight of leather, rotates dipping, adds the water of 4~5 times of wet blue leather weight, and cooling is rotated further leaching Stain, draining, after-treatment leather is made；（3）Described neutralization is that after-treatment leather is put into rotary drum, adds the water of 3~4 times of wet blue leather weight, adds indigo plant The neutralizing retanning agent of wet 0.01~0.02 times of weight of leather, rotates dipping, adds wet blue leather 4~5 times of water of weight, cooling is rotated further Dipping, draining, it is made and handles leather three times；（4）Described filling is that processing leather three times is put into rotary drum, adds the water of 3~4 times of wet blue leather weight, adds indigo plant The acrylic resin tanning agent of wet 0.03~0.04 times of weight of leather, rotates dipping, adds 0.01~0.02 times of wet blue leather weight Amino resins and amino resins filling tannin extract fiberfill fibers gap, rotate dipping, add wet blue leather weight 0.001~ 0.002 times of small molecule acrylate resin tanning agent, it is eventually adding the first acid for adjusting pH of 0.001~0.002 times of wet blue leather weight Value, adds the water of 1~2 times of wet blue leather weight, and heating rotates dipping, draining, four processing leathers is made；（5）Described stuffing is that four processing leathers are put into rotary drum, adds 2~3 times of water of wet blue leather weight, adds The dipping fatting agent of 0.01~0.02 times of wet blue leather weight, the formic acid for adding 0.001~0.002 times of wet blue leather weight adjust pH Value, 3~4 times of water of wet blue leather weight is added, dipping is rotated under normal temperature, draining, five processing leathers are made；（6）Described flame retardant treatment is that five processing leathers are put into rotary drum, adds 2~3 times of water of wet blue leather weight, from So dry, fumigated through nitrogen containing trimethyl aluminium, after microwax steam steaming, scrape off the microwax of leather surface, obtain stifling skin Leather；（7）Stifling leather is put into rotary drum, adds the polyallylamine solution of 3~4 times of wet blue leather weight, rotates dipping, freeze thawing Circulation, organic silicon emulsion and nano silicon dipping are added, naturally dry, produces flame-retardant leather.
- 2. the preparation method of flame-retardant leather as claimed in claim 1, it is characterised in that：（1）Described in pickling degreasing agent be ON- C, acid are formic acid and oxalic acid, wherein, the addition of formic acid is 0.001~0.002 times of wet blue leather weight, and the addition of oxalic acid is 0.001~0.002 times of wet blue leather weight.
- 3. the preparation method of flame-retardant leather according to claim 1, it is characterised in that：（1）Described in retanning agent be propylene Acid resin retanning agent, amino resins retanning agent or Researches on Tanning of Oxazolidines.
- 4. the preparation method of flame-retardant leather according to claim 1, it is characterised in that：The acrylic resin is MA-14 And LEUKOTAN970, wherein, MA-14 addition is 0.01~0.02 times of wet blue leather weight, LEUKOTAN970 addition Measure as 0.01~0.02 times of wet blue leather weight.
- 5. the preparation method of flame-retardant leather according to claim 1, it is characterised in that：（3）Described in neutralizing retanning agent be PAK-N-C, sodium formate and sodium bicarbonate, wherein, PAK-N-C addition is 0.02~0.03 times of wet blue leather weight, sodium formate Addition be 0.02~0.03 times of wet blue leather weight, the addition of sodium bicarbonate is 0.02~0.03 times of wet blue leather weight.
- 6. the preparation method of flame-retardant leather according to claim 1, it is characterised in that：（4）Described in acrylic resin Tanning agent is SA-09, MAS and HA-16, wherein, SA-09 addition is 0.05~0.06 times of wet blue leather weight, MAS addition Measure as 0.04~0.05 times of wet blue leather weight, HA-16 addition is 0.03~0.04 times of wet blue leather weight；The amino Resin filling tannin extract be DLF and JintanME, wherein, sharp tan pellet DLF addition be wet blue leather percetage by weight 0.04~ 0.05 times, JintanME addition is 0.02~0.03 times of wet blue leather percetage by weight, the small molecule acrylic resin Tanning agent is LEUKOTAN970.
- 7. the preparation method of flame-retardant leather according to claim 1, it is characterised in that：（5）Described in dipping fatting agent be EW, ATLASOL178, PROPUKT3531 and UFB/W, wherein, EW additions are 0.02~0.03 times of wet blue leather weight, ATLASOL178 additions are 0.02~0.03 times of wet blue leather weight, and PROPUKT3531 additions are wet blue leather weight 0.02~0.03 times, UFB/W additions are 0.02~0.03 times of wet blue leather weight.
- 8. the preparation method of flame-retardant leather according to claim 1, it is characterised in that：（6）Described in nitrogen containing trimethyl aluminium Trimethyl aluminium volume content is 5~6% in gas.
- 9. the preparation method of flame-retardant leather according to claim 1, it is characterised in that：（7）Described in organic silicon emulsion be 40~50%.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108598573A (en) * | 2017-12-30 | 2018-09-28 | 常州水精灵环保设备有限公司 | A kind of preparation method of lithium battery electrolytes |
| CN110773548A (en) * | 2019-10-21 | 2020-02-11 | 内江师范学院 | Pretreatment method for chromium removal of chromium-containing waste peel residues and chromium removal method |
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| CN102978299A (en) * | 2012-11-29 | 2013-03-20 | 际华三五一二皮革服装有限公司 | Manufacturing method of light, thin and soft high-strength goat gloving leather |
| CN104450990A (en) * | 2014-12-01 | 2015-03-25 | 际华三五一四制革制鞋有限公司 | Preparation method of flame-retardant leather |
| CN106011326A (en) * | 2016-07-05 | 2016-10-12 | 山东德信皮业有限公司 | Preparation process of deep-level flame-retardant leather for high-speed trains and airplanes |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102978299A (en) * | 2012-11-29 | 2013-03-20 | 际华三五一二皮革服装有限公司 | Manufacturing method of light, thin and soft high-strength goat gloving leather |
| CN104450990A (en) * | 2014-12-01 | 2015-03-25 | 际华三五一四制革制鞋有限公司 | Preparation method of flame-retardant leather |
| CN106011326A (en) * | 2016-07-05 | 2016-10-12 | 山东德信皮业有限公司 | Preparation process of deep-level flame-retardant leather for high-speed trains and airplanes |
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| CN108598573A (en) * | 2017-12-30 | 2018-09-28 | 常州水精灵环保设备有限公司 | A kind of preparation method of lithium battery electrolytes |
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| CN110773548A (en) * | 2019-10-21 | 2020-02-11 | 内江师范学院 | Pretreatment method for chromium removal of chromium-containing waste peel residues and chromium removal method |
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