CN109022631B - A kind of environmental protection leather production and processing technology - Google Patents
A kind of environmental protection leather production and processing technology Download PDFInfo
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- CN109022631B CN109022631B CN201810985460.2A CN201810985460A CN109022631B CN 109022631 B CN109022631 B CN 109022631B CN 201810985460 A CN201810985460 A CN 201810985460A CN 109022631 B CN109022631 B CN 109022631B
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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
- C14C1/04—Soaking
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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
- C14C11/00—Surface finishing of leather
-
- 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
- C14C3/04—Mineral tanning
-
- 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
- C14C3/22—Chemical tanning by organic agents using polymerisation products
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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
- C14C9/00—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes
- C14C9/02—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes using fatty or oily materials, e.g. fat liquoring
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/02—Material containing basic nitrogen
- D06P3/04—Material containing basic nitrogen containing amide groups
- D06P3/32—Material containing basic nitrogen containing amide groups leather skins
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention discloses a kind of environmentally friendly leather production and processing technologies, the preparation of S1, materials with hide glue fibril: agent of soaking is entered and is uniformly mixed in 35-45 DEG C of warm water as the liquid that soaks, dry hide or salted hide are put into immersion liquid after being cleaned using flowing water, holding floods constant temperature and impregnates 3-4h, in the rawhide after immersion is successively cut, degreasing, softening and pickling obtained materials with hide glue fibril；S2, tanning: materials with hide glue fibril is added in tanning cylinder, and nano-composite tanning agent and 35-45 DEG C of temperature of deionized water is added, 1% aqueous formic acid is added, and the pH for adjusting solution is 3.5-4.0, rotates 7-10h；S3, arrangement: sodium bicarbonate solution being added into rotary drum, and adjusting pH is 5.0-5.5, rotates 20-30min, and dyestuff is added and carries out dyeing processing, adds grease rotation 1h；Then through fixation, washing, go out drum, take horse, vacuum drying, resurgence vibration soft obtain environmentally friendly leather；Process can effectively reduce environmental pollution, have a good application prospect.
Description
Technical field
The invention belongs to leather manufacture technical fields, and in particular to a kind of environmental protection leather production and processing technology.
Background technique
It is called raw material skin for the Animal Skin of leather industry processing, traditionally again raw material skin rawhide, it is a kind of fibre
Tie up the extremely complex natural macromolecular material of braiding structure.Leather is by Animal Skin (i.e. rawhide) by a series of physical and chemistry
Working process be transformed into a kind of fixation, durable substance, referred to as remove from office；Process hides is actually rawhide by a series of objects
The process of reason and the processing transformation finished leather of chemistry, leather by tanning processing and sorting have that soft, tough and tensile, chance water is not variable
Shape, it is dry be not easy to shrink, the performances such as wet-heat resisting, chemically-resistant pharmacy effect, while also there is ventilative, permeable gas and anti-aging etc.
Special advantage.
Semi-finished product before tanning are known as " skin " by people's habit, and the semi-finished product after tanning referred to as " are removed from office ".Rawhide transformation
It is known as tanning for the qualitative change process of leather, the chemical material that rawhide is changed into leather for tanning is known as tanning agent.With a certain tan
The method of agent tanning pelt is known as the tannage of the tanning agent, and made leather is known as the leather of the tannage.
Tanning is one of the critical process in process hides, and chrome tanning has occupied governance in tanning field always since its extensive use
Status, but due to pollution of chromium and its shortage of resources problem, chrome tanning will be substituted, however temperature is being shunk in other inorganic tanning agent tannings
Degree etc. can not compared with chrome leather, though and synthesize organic tanning agent tanning finished leather fullness it is good, shrinkage temperature also compared with
It is low, therefore leather industry field needs to develop in a hurry and development of new tanning agent.
Summary of the invention
The purpose of the present invention is to provide a kind of environmentally friendly leather production and processing technologies, can effectively reduce environmental pollution, and
Simple production process is effective, has a good application prospect.
The technical problem to be solved in the invention are as follows:
1, how to shorten dry hide or salted hide soaking time；
2, the pollution of chromium in leather production how is solved；
3, how to achieve the purpose that tanning；
4, that how to improve tanning finished leather thickens rate and shrinkage temperature.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of environmental protection leather production and processing technology, specifically includes following technique:
The preparation of S1, materials with hide glue fibril: the agent that will soak, which enters, to be uniformly mixed as the liquid that soaks in 35-45 DEG C of warm water, dry hide or
Salted hide using being put into immersion liquid after flowing water cleaning, flood constant temperature and impregnate 3-4h, and the rawhide after immersion is successively cut by holding
In, degreasing, softening and pickling obtained materials with hide glue fibril；
S2, tanning: materials with hide glue fibril is added in tanning cylinder, is subsequently added into nano-composite tanning agent and 35-45 DEG C of temperature
Deionized water, be added 1% aqueous formic acid, the pH for adjusting solution in tanning cylinder is 3.5-4.0, rotates 7-10h；
The nano-composite tanning agent is styrene-maleic anhydride copolymer/diatomite nano composite tanning agent, preparation side
Method are as follows:
(1) activation of diatomite: diatomite is ground, acidification, wash, calcining and sieving have obtained partial size as 10-50nm
Activation diatomite；
(2) preparation of nano-composite tanning agent: the isopropanol that the diatomite that step (1) activates is added to 35-40% is water-soluble
It in liquid, quickly after mixing evenly in the case where revolving speed is 800-1000r/min, stands, adjusts revolving speed to 600-700r/min, side stirring
The maleic anhydride of styrene and 1/2 amount is added in side, is put into water bath sonicator instrument after mixing and carries out ultrasound, is warming up to 74-83
DEG C, 1/4 initiator ammonium persulfate is added, after being stirred to react 5min, the slowly maleic anhydride of addition surplus at the uniform velocity and initiation
Agent ammonium persulfate, is added dropwise, insulation reaction 3h, is cooled to room temperature, adjusts pH to 5-6.5 to get phenylethylene-maleic anhydride has been arrived
Copolymer/diatomite nano composite tanning agent；
S3, arrangement: sodium bicarbonate solution being added into rotary drum, and adjusting pH is 5.0-5.5, rotates 20-30min, dye is added
Material carries out dyeing processing 40min, adds grease, rotates 1h；Then through fixation, washing, go out drum, take horse, vacuum drying, resurgence
It shakes and soft obtains environmentally friendly leather.
Further, described in step S1 soak each raw material of agent weight percent are as follows: 4-butyl ammonium hydrogen sulfate 5-12%, thoroughly
Bright matter acid 6-10%, dimethyl silicone polymer 1-3%, hydroxy-ethyl acrylate 2-5%, 5% sodium chloride solution 0.8-1.5%, third
Glycol 20-30%, surplus are deionized water；By 4-butyl ammonium hydrogen sulfate, hyaluronic acid, 5% sodium chloride solution and deionized water
It is added in blender, is heated to 65-70 DEG C, stir 1-2h, standing is cooled to 45-50 DEG C, and dimethyl silicone polymer, third is added
Olefin(e) acid hydroxyl ethyl ester and propylene glycol, constant temperature stirring carry out emulsification 20-35min to get immersion agent is arrived.
Further, the weight ratio of immersion agent, warm water, dry hide or salted hide described in step S1 are as follows: 0.1-0.2:10-20:1.
Further, the weight ratio of nano-composite tanning agent, deionized water and materials with hide glue fibril described in step S2 are as follows: 0.055-
0.07:2-3:1。
Further, styrene-maleic anhydride copolymer described in step S2/diatomite nano composite tanning agent, preparation side
Method specifically includes the following steps:
(1) activation of diatomite: diatomite being added in ball mill and is ground, and adding water to be modulated into concentration is 30%
The sulfuric acid solution of 45-50% is added in tripolite solution while stirring, when the pH of tripolite solution is 2.0-3.0, stops sulfuric acid
Addition, continue stir 10-15min, again measure tripolite solution pH be 2.0-3.0 when, stand 2- at 35-40 DEG C
3h is cooled to room temperature, filtration washing to neutrality, is dried filter residue, is put into Muffle furnace, calcines 5h at 650-800 DEG C, crushed
200 meshes are up to the diatomite activated；The partial size of diatomite is 10-50nm；
(2) preparation of nano-composite tanning agent: the isopropanol that the diatomite that step (1) activates is added to 35-40% is water-soluble
In liquid, after quickly stirring evenly 10min under revolving speed is 800-1000r/min, 10-15h is stood, adjusts revolving speed to 600-
The maleic anhydride of styrene and 1/2 amount is added while stirring, is put into water bath sonicator instrument after mixing, in 50- by 700r/min
Ultrasound 15-20min is carried out at 55 DEG C, is warming up to 74-83 DEG C, 1/4 initiator ammonium persulfate is added, after being stirred to react 5min,
Slowly the maleic anhydride and initiator ammonium persulfate of addition surplus at the uniform velocity, the maleic anhydride and initiator ammonium persulfate of surplus exist
It is added dropwise in 45-55min, insulation reaction 3h is cooled to room temperature, using the sodium hydroxide solution of 20-25% by reaction solution
PH is adjusted to 5-6.5, that is, has obtained styrene-maleic anhydride copolymer/diatomite nano composite tanning agent.
Further, dyestuff weight described in step S3 is the 0.8-1.5% of materials with hide glue fibril；The grease weight is skin
The 1-3% of collagenous fibres weight.
The composition principle of nano-composite tanning agent: diatomite is activated, eliminates the impurity in structure of diatomite layer, dredging
The hole of diatomite passes through control convenient for the monomer styrene of small molecule and the layer compartment for absorbing into diatomite of maleic anhydride
The amount of starting monomer styrene and maleic anhydride and initiator processed first carries out oligomerization, and oligomeric image diatomite internal structure is moved
It moves, is subsequently added into the maleic anhydride and initiator of surplus, to further be polymerize in structure of diatomite, avoids poly-
It closes the high polymer that object rapid polymerization is formed and is not easy the problem of adhering to, effectively prevent high polymer and be detached from asking for diatomite sedimentation
Topic；
The tanning mechanism of nano-composite tanning agent: styrene-maleic anhydride copolymer/diatomite nano composite tanning agent is diffused into
On materials with hide glue fibril, adsorption and sedimentation occurs for the diatomite and materials with hide glue fibril of high hole, in this way, in acid condition, styrene-
Carboxylate radical on copolymer-maleic anhydride and the amino on materials with hide glue fibril with electrovalent bond in conjunction with form cross-linked network, other diatom
Soil also has the function of filling for leather, improves the mechanical property, heat resistance and barrier property of finished leather, chrome tanning is substituted
Agent avoids pollution of chromium.
Beneficial effects of the present invention:
(1) the immersion agent used, wherein hyaluronic acid, which has, quickly improves dry hide or salted hide moisturizing polywater effect, addition
The collective effect of 4-butyl ammonium hydrogen sulfate and dimethyl silicone polymer can remove on the basis of helping dry hide or salted hide return water
Wherein non-fiber type protein and proteoglycan, while 4-butyl ammonium hydrogen sulfate also has the work of sterilization and anticorrosion during immersion
With；Under each ingredient synergistic effect in immersion agent, existing soaking time 8-10h is foreshortened into 3-4h, solves shortening dry hide
Or the problem of salted hide soaking time；
(2) a kind of environmentally friendly leather production and processing technology provided by the invention, chrome-free tanning agent in process, reduces pollution of chromium,
Technical process focuses on cleanly production, and pollution is small, has good environmental benefit, solves asking for chrome in leather production pollution
Topic；
(3) styrene-maleic anhydride copolymer/diatomite nano composite tanning agent used, the diatomite and skin of high hole
Adsorption and sedimentation occurs for collagenous fibres, in this way, in acid condition, carboxylate radical and hide glue on styrene-maleic anhydride copolymer
Amino on fibrinogen is combined with electrovalent bond forms cross-linked network, to achieve the purpose that tanning；
(4) styrene-maleic anhydride copolymer/diatomite nano composite tanning agent is diffused on materials with hide glue fibril first, high
Adsorption and sedimentation occurs for the diatomite and materials with hide glue fibril of hole, in this way, in acid condition, styrene-maleic anhydride copolymer
On carboxylate radical and the amino on materials with hide glue fibril with electrovalent bond in conjunction with form cross-linked network, in addition diatomite also has leather
There is filling, improve the mechanical property, heat resistance and barrier property of finished leather, the environmentally friendly leather of preparation thickens rate height
Up to 83.5%, shrinkage temperature is 75 DEG C, and environmentally friendly leather hand feeling is plentiful, and soft, grain is careful；Solve tanning finished leather thickens rate
The problem low with shrinkage temperature.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
Embodiment 1
The weight of immersion each raw material of agent are as follows: 4-butyl ammonium hydrogen sulfate 5g, hyaluronic acid 10g, dimethyl silicone polymer 2g, third
Olefin(e) acid hydroxyl ethyl ester 4g, 5% sodium chloride solution 1.5g, propylene glycol 25g, surplus is deionized water；By 4-butyl ammonium hydrogen sulfate, transparent
Matter acid, 5% sodium chloride solution and deionized water are added in blender, are heated to 65g DEG C, stir 2h, and standing is cooled to 45 DEG C,
Dimethyl silicone polymer, hydroxy-ethyl acrylate and propylene glycol is added, constant temperature stirring carries out emulsification 20min to get immersion agent is arrived；
Styrene-maleic anhydride copolymer/diatomite nano composite tanning agent, preparation method specifically includes the following steps:
(1) activation of diatomite: 500g diatomite being added in ball mill and is ground, and is added water to be modulated into concentration and is
45% sulfuric acid solution is added in 30% tripolite solution while stirring, and the pH for measuring tripolite solution is 2.2, stops sulfuric acid
Addition, continue stir 15min, again measure tripolite solution pH be 2.3, stand 3h at 40 DEG C, be cooled to room temperature, mistake
Filter washing dries filter residue, is put into Muffle furnace, calcines 5h at 700 DEG C, crushed 200 meshes up to the silicon of activation to neutrality
Diatomaceous earth；The partial size of diatomite is 22nm；
(2) preparation of nano-composite tanning agent: the isopropanol that the diatomite that 100g step (1) activates is added to 40% is water-soluble
In liquid, after quickly stirring evenly 10min under revolving speed is 1000r/min, 15h is stood, adjusts revolving speed to 650r/min, side stirring
10g styrene and 5g maleic anhydride is added in side, is put into water bath sonicator instrument after mixing, and ultrasound 20min is carried out at 50 DEG C,
78 DEG C are warming up to, the initiator ammonium persulfate of 1g is added, after being stirred to react 5min, the slow 5g maleic acid of addition surplus at the uniform velocity
Acid anhydride and 3g initiator ammonium persulfate, the maleic anhydride and initiator ammonium persulfate of surplus are added dropwise in 55min, insulation reaction
3h is cooled to room temperature, and the pH of reaction solution is adjusted to 6 to get styrene-maleic acid has been arrived using 20% sodium hydroxide solution
Anhydride copolymer/diatomite nano composite tanning agent；
A kind of environmental protection leather production and processing technology, specifically includes following technique:
The preparation of S1, materials with hide glue fibril: 10g immersion agent being entered and is uniformly mixed in 35 DEG C of 1.5kg of warm water as the liquid that soaks,
Using being put into immersion liquid after flowing water cleaning, holding floods constant temperature and impregnates 4h for 100g dry hide or salted hide, by the rawhide after immersion according to
It is secondary cut in, degreasing, softening and pickling obtained materials with hide glue fibril；
S2, tanning: 100g materials with hide glue fibril is added in tanning cylinder, is subsequently added into 5.5g nano-composite tanning agent and 200g
1% aqueous formic acid is added in the deionized water of temperature 45 C, and the pH for adjusting solution in tanning cylinder is 3.7, rotates 7h；
S3, arrangement: being added sodium bicarbonate solution into rotary drum, and adjusting pH is 5.0, rotates 30min, be added 0.8g dyestuff into
Row dyeing processing 40min, adds 2g grease, rotates 1h；Then through fixation, washing, go out drum, take horse, vacuum drying, resurgence shake
It is soft to obtain environmentally friendly leather；The rate that thickens of the environmentally friendly leather of preparation is 83.5%, and shrinkage temperature is 72 DEG C, and environmentally friendly leather hand feeling is rich
Full, soft, grain is careful.
Embodiment 2
Immersion agent and styrene-maleic anhydride copolymer/diatomite nano composite tanning agent are the same as embodiment 1；
A kind of environmental protection leather production and processing technology, specifically includes following technique:
The preparation of S1, materials with hide glue fibril: 20g immersion agent being entered and is uniformly mixed in 45 DEG C of 2kg of warm water as the liquid that soaks,
Using being put into immersion liquid after flowing water cleaning, holding floods constant temperature and impregnates 3h for 100g dry hide or salted hide, by the rawhide after immersion according to
It is secondary cut in, degreasing, softening and pickling obtained materials with hide glue fibril；
S2, tanning: 100g materials with hide glue fibril is added in tanning cylinder, is subsequently added into 6g nano-composite tanning agent and 300g temperature
1% aqueous formic acid is added in the deionized water of 35 DEG C of degree, and the pH for adjusting solution in tanning cylinder is 4.0, rotates 10h；
S3, arrangement: being added sodium bicarbonate solution into rotary drum, and adjusting pH is 5.5, rotates 20min, be added 1.5g dyestuff into
Row dyeing processing 40min, adds 1g grease, rotates 1h；Then through fixation, washing, go out drum, take horse, vacuum drying, resurgence shake
It is soft to obtain environmentally friendly leather；The environmentally friendly leather of preparation thickens rate 81%, and shrinkage temperature is 75 DEG C, and environmentally friendly leather hand feeling is plentiful, soft
Soft, grain is careful.
Embodiment 3
Immersion agent and styrene-maleic anhydride copolymer/diatomite nano composite tanning agent are the same as embodiment 1；
A kind of environmental protection leather production and processing technology, specifically includes following technique:
The preparation of S1, materials with hide glue fibril: 15g immersion agent being entered and is uniformly mixed in 40 DEG C of 1kg of warm water as the liquid that soaks,
100g dry hide or salted hide after flowing water cleaning using being put into immersion liquid, and holding floods constant temperature and impregnates 3.5h, by the rawhide after immersion
In successively being cut, degreasing, softening and pickling obtained materials with hide glue fibril；
S2, tanning: 100g materials with hide glue fibril is added in tanning cylinder, is subsequently added into 6g nano-composite tanning agent and 250g temperature
1% aqueous formic acid is added in the deionized water of 40 DEG C of degree, and the pH for adjusting solution in tanning cylinder is 3.8, rotates 8h；
S3, arrangement: being added sodium bicarbonate solution into rotary drum, and adjusting pH is 5.2, rotates 20min, be added 1.1g dyestuff into
Row dyeing processing 40min, adds 3g grease, rotates 1h；Then through fixation, washing, go out drum, take horse, vacuum drying, resurgence shake
It is soft to obtain environmentally friendly leather；The environmentally friendly leather of preparation thickens rate 80%, and shrinkage temperature is 73 DEG C, and environmentally friendly leather hand feeling is plentiful, soft
Soft, grain is careful.
The above content is just an example and description of the concept of the present invention, affiliated those skilled in the art
It makes various modifications or additions to the described embodiments or is substituted in a similar manner, without departing from invention
Design or beyond the scope defined by this claim, be within the scope of protection of the invention.
Claims (6)
1. a kind of environmental protection leather production and processing technology, it is characterised in that: specifically include following technique:
The preparation of S1, materials with hide glue fibril: agent of soaking is entered and is uniformly mixed in 35-45 DEG C of warm water as liquid, dry hide or the salted hide of soaking
It is put into after being cleaned using flowing water in immersion liquid, holding floods constant temperature and impregnates 3-4h, in the rawhide after immersion is successively cut, takes off
Rouge, softening and pickling have obtained materials with hide glue fibril；
S2, tanning: materials with hide glue fibril is added in tanning cylinder, is subsequently added into going for nano-composite tanning agent and 35-45 DEG C of temperature
1% aqueous formic acid is added in ionized water, and the pH for adjusting solution in tanning cylinder is 3.5-4.0, rotates 7-10h；
The nano-composite tanning agent is styrene-maleic anhydride copolymer/diatomite nano composite tanning agent, preparation method
Are as follows:
(1) activation of diatomite: diatomite is ground, acidification, wash, calcining and sieving have obtained the work that partial size is 10-50nm
The diatomite of change；
(2) preparation of nano-composite tanning agent: the diatomite that step (1) activates is added in the isopropanol water solution of 35-40%,
Quickly after mixing evenly in the case where revolving speed is 800-1000r/min, stand, adjust revolving speed to 600-700r/min, while stirring plus
Enter the maleic anhydride of styrene and 1/2 amount, is put into water bath sonicator instrument after mixing and carries out ultrasound, be warming up to 74-83 DEG C, add
The initiator ammonium persulfate for entering 1/4, after being stirred to react 5min, the slow maleic anhydride and initiator over cure of addition surplus at the uniform velocity
Sour ammonium, is added dropwise, insulation reaction 3h, is cooled to room temperature, adjusts pH to 5-6.5 to get styrene-maleic anhydride copolymer has been arrived
Object/diatomite nano composite tanning agent；
S3, arrangement: being added sodium bicarbonate solution into rotary drum, and adjusting pH is 5.0-5.5, rotates 20-30min, be added dyestuff into
Row dyeing processing 40min, adds grease, rotates 1h；Then through fixation, washing, go out drum, take horse, vacuum drying, resurgence vibration it is soft
Obtain environmentally friendly leather.
2. a kind of environmentally friendly leather production and processing technology according to claim 1, it is characterised in that: immersion described in step S1
The weight percent of each raw material of agent are as follows: 4-butyl ammonium hydrogen sulfate 5-12%, hyaluronic acid 6-10%, dimethyl silicone polymer 1-
3%, hydroxy-ethyl acrylate 2-5%, 5% sodium chloride solution 0.8-1.5%, propylene glycol 20-30%, surplus is deionized water；It will
4-butyl ammonium hydrogen sulfate, hyaluronic acid, 5% sodium chloride solution and deionized water are added in blender, are heated to 65-70 DEG C,
Stir 1-2h, standing is cooled to 45-50 DEG C, be added dimethyl silicone polymer, hydroxy-ethyl acrylate and propylene glycol, constant temperature stir into
Row emulsifies 20-35min to get immersion agent is arrived.
3. a kind of environmentally friendly leather production and processing technology according to claim 1, it is characterised in that: immersion described in step S1
Agent, warm water, dry hide or salted hide weight ratio are as follows: 0.1-0.2:10-20:1.
4. a kind of environmentally friendly leather production and processing technology according to claim 1, it is characterised in that: nanometer described in step S2
The weight ratio of composite tanning agent, deionized water and materials with hide glue fibril are as follows: 0.055-0.07:2-3:1.
5. a kind of environmentally friendly leather production and processing technology according to claim 1, it is characterised in that: benzene second described in step S2
Alkene-copolymer-maleic anhydride/diatomite nano composite tanning agent, preparation method specifically includes the following steps:
(1) activation of diatomite: diatomite being added in ball mill and is ground, and water is added to be modulated into the diatom that concentration is 30%
The sulfuric acid solution of 45-50% is added in native solution while stirring, when the pH of tripolite solution is 2.0-3.0, stops adding for sulfuric acid
Enter, continue to stir 10-15min, when the pH for measuring tripolite solution again is 2.0-3.0,2-3h is stood at 35-40 DEG C, it is cold
But to room temperature, filtration washing to neutrality dries filter residue, is put into Muffle furnace, calcines 5h at 650-800 DEG C, crushed 200 mesh
Sieve the diatomite up to activation；The partial size of diatomite is 10-50nm；
(2) preparation of nano-composite tanning agent: the diatomite that step (1) activates is added in the isopropanol water solution of 35-40%,
After quickly stirring evenly 10min under revolving speed is 800-1000r/min, standing 10-15h, adjusting revolving speed to 600-700r/min,
While stirring be added styrene and 1/2 amount maleic anhydride, be put into water bath sonicator instrument after mixing, at 50-55 DEG C into
Row ultrasound 15-20min, is warming up to 74-83 DEG C, 1/4 initiator ammonium persulfate is added, after being stirred to react 5min, slowly at the uniform velocity
Addition surplus maleic anhydride and initiator ammonium persulfate, the maleic anhydride and initiator ammonium persulfate of surplus are in 45-55min
It is inside added dropwise, insulation reaction 3h is cooled to room temperature, is adjusted to the pH of reaction solution using the sodium hydroxide solution of 20-25%
5-6.5 has obtained styrene-maleic anhydride copolymer/diatomite nano composite tanning agent.
6. a kind of environmentally friendly leather production and processing technology according to claim 1, it is characterised in that: dyestuff described in step S3
Weight is the 0.8-1.5% of materials with hide glue fibril；The grease weight is the 1-3% of materials with hide glue fibril weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810985460.2A CN109022631B (en) | 2018-08-28 | 2018-08-28 | A kind of environmental protection leather production and processing technology |
Applications Claiming Priority (1)
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