CN107877769A - The preparation method of synthetic leather - Google Patents
The preparation method of synthetic leather Download PDFInfo
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- CN107877769A CN107877769A CN201710981526.6A CN201710981526A CN107877769A CN 107877769 A CN107877769 A CN 107877769A CN 201710981526 A CN201710981526 A CN 201710981526A CN 107877769 A CN107877769 A CN 107877769A
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- weight
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- foaming
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
- B29C44/22—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length consisting of at least two parts of chemically or physically different materials, e.g. having different densities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/60—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/06—PVC, i.e. polyvinylchloride
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- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The invention provides a kind of preparation method of synthetic leather.The preparation method comprises the following steps：S1, the first raw material calendering formation of polyvinyl chloride, the first plasticizer and uric acid class foaming agent will be included, obtain synthetic leather bottom；S2, the coating adhesive in base fabric, and synthetic leather bottom and synthetic leather surface layer order are arranged in base fabric, obtain prefoam composite bed；S3, foaming processing is carried out to prefoam composite bed, obtains synthetic leather, the blowing temperature for processing of foaming is 135~205 DEG C.By the way that the azo foaming agent used in the prior art is replaced with into uric acid class foaming agent, avoid a large amount of influences of the gas residue to environment caused by azo foaming agent decomposition, and then the excellent properties having using uric acid class foaming agent in itself, and above-mentioned foaming agent species is combined by the way that blowing temperature is defined into 135~205 DEG C, the synthetic leather for enabling to be prepared has higher environmental-protecting performance.
Description
Technical field
The present invention relates to field of material technology, in particular to a kind of preparation method of synthetic leather.
Background technology
Leather is used as internal material in the multiple fields including auto industry, leather generally include natural leather and
Synthetic leather, wherein, therefore synthetic leather, is now widely used for because cost is cheap compared to natural leather and easily batch production
In the fields such as auto industry.
Surface layer and bottom are first generally prepared in the preparation technology of synthetic leather, the adhesives such as PVC are then coated with base fabric
Slurry, then first calendering formation go out bottom, bottom film from calendering disk roller draw take out while while hot melt state fit to
On base fabric, then the surface layer film of calendering formation is bonded in the same way, after being finally bonded to bottom and surface layer
Product carries out foaming processing to obtain synthetic leather.
However, the VOC content of conventional synthetic leather is higher at present, so as to there is the problem of environmental-protecting performance is poor, so as to reach
Less than the requirement of client.
The content of the invention
It is a primary object of the present invention to providing a kind of preparation method of synthetic leather, to solve synthetic leather in the prior art
The problem of environmental-protecting performance is poor.
To achieve these goals, according to an aspect of the invention, there is provided a kind of preparation method of synthetic leather, is prepared
Method comprises the following steps：S1, the first raw material including polyvinyl chloride, the first plasticizer and uric acid class foaming agent is rolled into
Type, obtain synthetic leather bottom；S2, the coating adhesive in base fabric, and synthetic leather bottom and synthetic leather surface layer order are arranged at
In base fabric, prefoam composite bed is obtained；S3, foaming processing is carried out to prefoam composite bed, obtains synthetic leather, the hair for processing of foaming
It is 135~205 DEG C to steep temperature.
Further, in step sl, it is 150~170 DEG C by the temperature of the first raw material calendering formation.
Further, the parts by weight of polyvinyl chloride are 100 parts in above-mentioned first raw material, and the parts by weight of uric acid class foaming agent are
4~12, preferably uric acid class foaming agent includes amino compound, and preferably amino compound is melamine cyanurate.
Further, the parts by weight of above-mentioned first plasticizer are 90~110, and preferably the first plasticizer includes phthalic acid
The parts by weight of dioctyl ester and soybean oil, more preferably dioctyl phthalate are 50~105, and the parts by weight of soybean oil are 5~60.
Further, above-mentioned first raw material also includes liquid barium zinc stabilizer and the first plasticizing aid, preferably the first raw material
The parts by weight of middle liquid barium zinc stabilizer are 1.5~3.5, and the parts by weight of the first plasticizing aid are 1.5~4.5, more preferably first
Plasticizing aid is acrylate.
Further, before the step of step S2, preparation method is further comprising the steps of：Using including polyvinyl chloride and
Synthetic leather surface layer is prepared in second raw material of the second plasticizer.
Further, the parts by weight of above-mentioned polyvinyl chloride are 100, and the parts by weight of the second plasticizer are 43~130, preferably the
Two plasticizer include dioctyl phthalate and soybean oil, and the more preferably parts by weight of dioctyl phthalate are 40~120,
The parts by weight of soybean oil are 3~10.
Further, the calcium zinc stabilizer and parts by weight that above-mentioned second raw material is 1.5~3.5 also including parts by weight are 0
~3 the second plasticizing aid, preferably the second plasticizing aid are acrylate.
Further, in step s3, foam processing frothing percentage be 1.5~2.5.
Further, above-mentioned foaming processing includes multiple blowing temperatures different foaming processing stage, and preferably foaming is handled
Including the first foaming processing stage that the blowing temperature that carries out successively is 135~140 DEG C, 140~150 DEG C of the second foaming processing
Stage, the 3rd of 180~205 DEG C the foaming processing stage and the 4th of 160~170 DEG C the foaming processing stage, more preferably each hair
The foamed time of bubble processing stage is each independently 1.5~3.5min.
Apply the technical scheme of the present invention, there is provided a kind of preparation method of synthetic leather, due to first will in the preparation method
Include the first raw material calendering formation of polyvinyl chloride, the first plasticizer and uric acid class foaming agent, obtain synthetic leather bottom, but
Coating adhesive in base fabric, and synthetic leather bottom and synthetic leather surface layer order are arranged in base fabric, prefoam composite bed is obtained,
Foaming processing finally is carried out to prefoam composite bed, obtains synthetic leather, so as to by the way that the azo used in the prior art is sent out
Infusion replaces with uric acid class foaming agent, avoids a large amount of gas residues caused by azo foaming agent decomposition to the shadow of environment
Ring, and then excellent properties having using uric acid class foaming agent in itself, and combine above-mentioned foaming agent species by by blowing temperature
135~205 DEG C are defined to, the synthetic leather for enabling to be prepared has higher environmental-protecting performance.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below with reference to figure, the present invention is further detailed explanation.
Brief description of the drawings
The Figure of description for forming the part of the present invention is used for providing a further understanding of the present invention, and of the invention shows
Meaning property embodiment and its illustrate be used for explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows the schematic flow sheet of the preparation method for the synthetic leather that embodiment of the present invention is provided.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, it should all belong to the model that the present invention protects
Enclose.
It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, "
Two " etc. be for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so use
Data can exchange in the appropriate case, so as to embodiments of the invention described herein.In addition, term " comprising " and " tool
Have " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing series of steps or unit
Process, method, system, product or equipment are not necessarily limited to those steps clearly listed or unit, but may include without clear
It is listing to Chu or for the intrinsic other steps of these processes, method, product or equipment or unit.
As described in background technology, the VOC using pvc material as the synthetic leather of raw material contains in the prior art
Amount is higher, and so as to there is the problem of environmental-protecting performance is poor, present inventor is studied regarding to the issue above, it is proposed that one
The preparation method of kind synthetic leather, as shown in figure 1, preparation method comprises the following steps：S1, polyvinyl chloride, the first plasticising will be included
Agent and the first raw material calendering formation of uric acid class foaming agent, obtain synthetic leather bottom；S2, the coating adhesive in base fabric, and will
Synthetic leather bottom and synthetic leather surface layer order are arranged in base fabric, obtain prefoam composite bed；S3, prefoam composite bed is carried out
Foaming is handled, and obtains synthetic leather, and the blowing temperature for processing of foaming is 135~205 DEG C.
Due to will first include polyvinyl chloride, the first plasticizer and uric acid class in the preparation method of the above-mentioned synthetic leather of the present invention
First raw material calendering formation of foaming agent, obtains synthetic leather bottom, but the coating adhesive in base fabric, and by synthetic leather bottom
It is arranged at synthetic leather surface layer order in base fabric, obtains prefoam composite bed, foaming processing finally is carried out to prefoam composite bed,
Synthetic leather is obtained, so as to by the way that the azo foaming agent used in the prior art is replaced with into uric acid class foaming agent, avoid idol
A large amount of influences of the gas residue to environment caused by the decomposition of nitrogen class foaming agent, and then have in itself using uric acid class foaming agent
Excellent properties, and above-mentioned foaming agent species is combined by the way that blowing temperature is defined into 135~205 DEG C, make the synthesis being prepared
Leather can have higher environmental-protecting performance.
The illustrative embodiments of the preparation method according to synthetic leather provided by the invention are described in more detail below.So
And these illustrative embodiments can be implemented by many different forms, and should not be construed to be limited solely to here
The embodiment illustrated.It should be appreciated that these embodiments are provided so that disclosure herein is thorough and complete
It is whole, and the design of these illustrative embodiments is fully conveyed to those of ordinary skill in the art.
First, step S1 is performed：The first raw material including polyvinyl chloride, the first plasticizer and uric acid class foaming agent is rolled
Shaping, obtains synthetic leather bottom.Those skilled in the art can use preparation technology conventional to be in the prior art prepared
Synthetic leather bottom is stated, by the way that PVC, plasticizer are well mixed with raw materials such as uric acid class foaming agents in above-mentioned preparation technology, with
Plasticizer is set to play due effect.
In above-mentioned steps S1, in order that the synthetic leather being prepared can have higher tensile property and wearability
Can, it is preferable that by the temperature of the first raw material calendering formation be 150~170 DEG C；Also, those skilled in the art can be according to reality
Border demand carries out Rational choice to the content of uric acid class foaming agent in above-mentioned first raw material, excellent in order to improve the performance of synthetic leather
Selection of land, counted using PVC parts by weight as 100, the parts by weight of uric acid class foaming agent are 4~12；It is further preferable that above-mentioned uric acid class hair
Infusion includes urea compound, it is further preferable that above-mentioned uric acid class foaming agent is melamine cyanurate.
In above-mentioned preferred embodiment, those skilled in the art can be according to the actual requirements in above-mentioned first raw material
The content of first plasticizer carries out Rational choice, it is preferable that in order to improve the performance of synthetic leather bottom, using PVC parts by weight as
100 meters, the parts by weight of the first plasticizer are 90~110；Also, those skilled in the art can be according to prior art to above-mentioned
The species of one plasticizer carries out Rational choice, it is preferable that above-mentioned first plasticizer includes dioctyl phthalate and soybean oil；
It is further preferable that being counted using PVC parts by weight as 100, the parts by weight of dioctyl phthalate are 50~105, the weight of soybean oil
It is 5~60 to measure part.
In above-mentioned preferred embodiment, the first raw material can also include liquid barium zinc stabilizer and the first plasticizing helps
Agent, those skilled in the art can carry out Rational choice to the content of above two component in the first raw material according to the actual requirements,
In order to further improve the performance of synthetic leather bottom, it is preferable that counted using PVC parts by weight as 100, liquid barium zinc in the first raw material
The parts by weight of stabilizer are 1.5~3.5；And, it is preferable that the parts by weight of above-mentioned first plasticizing aid are 1.5~4.5, more
Preferably, above-mentioned first plasticizing aid is acrylate, and aforesaid propylene acid esters can further improve synthetic leather as lubricant
The performance of bottom.
After above-mentioned steps S1 is completed, step S2 is performed：The coating adhesive in base fabric, and by synthetic leather bottom and conjunction
Finished leather surface layer order is arranged in base fabric, obtains prefoam composite bed.Before the step of step S2, preparation method also include with
Lower step：Synthetic leather surface layer is prepared using the second raw material including polyvinyl chloride and the second plasticizer.In above-mentioned preparation work
By the way that PVC is well mixed with raw materials such as the second plasticizer in skill, so that the second plasticizer plays due effect.
In above-mentioned steps S2, those skilled in the art can choose according to prior art to the species of base fabric；And
And by base fabric coating adhesive can increase adhesion between base fabric and synthetic leather bottom, and then make prepared
Synthetic leather product has higher bottom peel strength, and those skilled in the art can also be according to prior art to above-mentioned adhesive
Species carry out reasonable selection, it is preferable that adhesive is PVC paste resin.Above-mentioned preferred class of adhesive is due to outstanding
Bond properties, so as to effectively strengthen the bonding force between bottom and base fabric.
The content of each component can be chosen according to the actual requirements in above-mentioned second raw material, in order to improve synthetic leather surface layer
Performance, it is preferable that in step s 2, formed synthetic leather surface layer the second raw material include parts by weight be 100 PVC and weight
Part is 43~130 the second plasticizer；It is further preferable that above-mentioned second plasticizer includes dioctyl phthalate and soybean
Oil, the parts by weight of dioctyl phthalate are 40~120, and the parts by weight of soybean oil are 3~10.
In above-mentioned preferred embodiment, in order to improve the performance of synthetic leather surface layer, it is preferable that the second raw material also includes
The second plasticizing aid that the calcium zinc stabilizer and parts by weight that parts by weight are 1.5~3.5 are 0~3.Those skilled in the art can be with
Rational choice is carried out to the species of the second plasticizing aid according to prior art, it is preferable that above-mentioned second plasticizing aid is acrylic acid
Ester, aforesaid propylene acid esters can further improve the performance of synthetic leather surface layer as lubricant.
After above-mentioned steps S2 is completed, step S3 is performed：Foaming processing is carried out to prefoam composite bed, synthesized
Leather, the blowing temperature for processing of foaming is 135~205 DEG C.Preferably, the frothing percentage of above-mentioned foaming processing is 1.5~2.5.Pass through
The process conditions that above-mentioned foaming is handled are limited in above-mentioned preferable parameter area, the synthetic leather enabled to not only has
The effect of compliance height and good hand touch, but above-mentioned preferable parameter area is not limited to, those skilled in the art can be with root
The process conditions handled according to prior art above-mentioned foaming carry out Rational choice.
In above-mentioned steps S3, in order to further improve the performance for the synthetic leather being prepared, it can make at above-mentioned foaming
Reason including multiple blowing temperatures different foaming processing stage, it is preferable that above-mentioned foaming processing includes the foaming temperature carried out successively
Spend the first foaming processing stage for 135~140 DEG C, the second of 140~150 DEG C the foaming processing stage, the of 180~205 DEG C
Three foaming processing stages and the 4th of 160~170 DEG C the foaming processing stage；It is further preferable that the hair for processing stage of respectively foaming
The bubble time is each independently 1.5~3.5min.
Synthetic leather provided by the invention and preparation method thereof is further illustrated below in conjunction with embodiment.
Embodiment 1
The preparation method for the synthetic leather that the present embodiment provides comprises the following steps：
By the PVC of 100 parts by weight, the plasticizer of 85 parts by weight, 3 parts by weight uric acid class foaming agent (model SC-170)
The first raw material is mixed into the barium zinc stabilizer (Ning Baidi, DC505J) of 1 parts by weight, and by first raw material with 135 DEG C of temperature
Calendering formation is spent, obtains synthetic leather bottom, wherein, plasticizer includes dioctyl phthalate and soybean oil, phthalic acid
The parts by weight of dioctyl ester are 75, and the parts by weight of soybean oil are 10, and above-mentioned PVC, dioctyl phthalate and soybean oil are normal
Advise commercially available prod；
Synthesis is prepared using the second raw material including polyvinyl chloride resin, the second plasticizer and calcium zinc stabilizer (CZ-108)
Leather surface layer, wherein, the parts by weight of polyvinyl chloride resin are 100, and the parts by weight of calcium zinc stabilizer are 1, and the second plasticizer includes O-phthalic
Dioctyl phthalate and soybean oil, the parts by weight of dioctyl phthalate are 35, and the parts by weight of soybean oil are 5, above-mentioned PVC, adjacent benzene
Diformazan dioctyl phthalate and soybean oil are conventional commercial product；
PVC slurries are coated with base fabric and are used as adhesive, and above-mentioned synthetic leather bottom and above-mentioned synthetic leather surface layer are arranged on
In base fabric, prefoam composite bed is obtained；
Foaming processing is carried out to prefoam composite bed, obtains synthetic leather, the frothing percentage for processing of foaming is 1.4, blowing temperature
For 135 DEG C.
Embodiment 2
The difference of the preparation method and embodiment 1 of the synthetic leather that the present embodiment provides is：
The blowing temperature of foaming processing is 205 DEG C.
Embodiment 3
The difference of the preparation method and embodiment 2 of the synthetic leather that the present embodiment provides is：
It it is 150 DEG C by the temperature of the first raw material calendering formation.
Embodiment 4
The difference of the preparation method and embodiment 3 of the synthetic leather that the present embodiment provides is：
The parts by weight of uric acid class foaming agent are 4.
Embodiment 5
The difference of the preparation method and embodiment 3 of the synthetic leather that the present embodiment provides is：
The parts by weight of uric acid class foaming agent are 12.
Embodiment 6
The difference of the preparation method and embodiment 5 of the synthetic leather that the present embodiment provides is：
The parts by weight of dioctyl phthalate are 50, and the parts by weight of soybean oil are 60.
Embodiment 7
The difference of the preparation method and embodiment 5 of the synthetic leather that the present embodiment provides is：
The parts by weight of dioctyl phthalate are 105, and the parts by weight of soybean oil are 5.
Embodiment 8
The difference of the preparation method and embodiment 7 of the synthetic leather that the present embodiment provides is：
The parts by weight of barium zinc stabilizer are 1.5 in first raw material, and the first raw material also includes the acrylic acid of 1.5 parts by weight.
Embodiment 9
The difference of the preparation method and embodiment 7 of the synthetic leather that the present embodiment provides is：
The parts by weight of barium zinc stabilizer are 3.5 in first raw material, and the first raw material also includes the acrylic acid of 4.5 parts by weight.
Embodiment 10
The difference of the preparation method and embodiment 9 of the synthetic leather that the present embodiment provides is：
The parts by weight of second plasticizer are 43, and the second plasticizer includes dioctyl phthalate and soybean oil, adjacent benzene two
The parts by weight of formic acid dioctyl ester are 40, and the parts by weight of soybean oil are 3.
Embodiment 11
The difference of the preparation method and embodiment 9 of the synthetic leather that the present embodiment provides is：
The parts by weight of second plasticizer are 130, and the second plasticizer includes dioctyl phthalate and soybean oil, adjacent benzene two
The parts by weight of formic acid dioctyl ester are 120, and the parts by weight of soybean oil are 10.
Embodiment 12
The difference of the preparation method and embodiment 11 of the synthetic leather that the present embodiment provides is：
The parts by weight of calcium zinc stabilizer are 1.5 in second raw material, and the second raw material also includes the acrylic acid of 0.1 parts by weight.
Embodiment 13
The difference of the preparation method and embodiment 11 of the synthetic leather that the present embodiment provides is：
The parts by weight of calcium zinc stabilizer are 3.5 in second raw material, and the second raw material also includes the acrylic acid of 3 parts by weight.
Embodiment 14
The difference of the preparation method and embodiment 13 of the synthetic leather that the present embodiment provides is：
The frothing percentage of foaming processing is 1.5, the first foaming that the blowing temperature that foaming processing includes carrying out successively is 135 DEG C
At processing stage, the second of 140 DEG C the foaming processing stage, the 3rd of 180 DEG C the foaming processing stage and 160 DEG C of the 4th foaming
Reason stage, each foamed time for foaming processing stage are each independently 1.5min.
Embodiment 15
The difference of the preparation method and embodiment 13 of the synthetic leather that the present embodiment provides is：
The frothing percentage of foaming processing is 2.5, the first foaming that the blowing temperature that foaming processing includes carrying out successively is 140 DEG C
At processing stage, the second of 150 DEG C the foaming processing stage, the 3rd of 205 DEG C the foaming processing stage and 170 DEG C of the 4th foaming
Reason stage, each foamed time for foaming processing stage are each independently 3.5min.
Embodiment 16
The preparation method for the synthetic leather that the present embodiment provides comprises the following steps：
By the PVC of 100 parts by weight, the plasticizer of 100 parts by weight, 8 parts by weight uric acid class foaming agent (model SC-
170), it is former to be mixed into first for the barium zinc stabilizer (Ning Baidi, DC505J) of 2 parts by weight and the first plasticizing aid of 3 parts by weight
Material, and first raw material is obtained into synthetic leather bottom with 170 DEG C of temperature calendering formation, wherein, plasticizer includes O-phthalic
Dioctyl phthalate and soybean oil, the parts by weight of dioctyl phthalate are 90, and the parts by weight of soybean oil are 10, above-mentioned first plasticizing
Auxiliary agent is acrylic acid, and above-mentioned PVC, dioctyl phthalate and soybean oil are conventional commercial product；
Using the polyvinyl chloride resin including 100 parts by weight, the plasticizer of 90 parts by weight, 2 parts by weight calcium zinc stabilizer (CZ-
108) and synthetic leather surface layer is prepared in the second raw material of the second plasticizing aid of 2 parts by weight, wherein, plasticizer includes adjacent benzene
Diformazan dioctyl phthalate and soybean oil, the parts by weight of dioctyl phthalate are 85, and the parts by weight of soybean oil are 5, above-mentioned second
Plasticizing aid is acrylic acid, and above-mentioned PVC, dioctyl phthalate and soybean oil are conventional commercial product；
PVC slurries are coated with base fabric and are used as adhesive, and above-mentioned synthetic leather bottom and above-mentioned synthetic leather surface layer are arranged on
In base fabric, prefoam composite bed is obtained；
Foaming processing is carried out to prefoam composite bed, obtains synthetic leather, the frothing percentage for processing of foaming is 2, foaming processing bag
Include the first foaming processing stage, the second of 145 DEG C the foaming processing stage, 190 DEG C that the blowing temperature carried out successively is 135 DEG C
3rd foaming processing stage and the 4th of 165 DEG C the foaming processing stage, the foamed time of each processing stage of foaming are each independent
Ground is 2.5min.
Comparative example 1
The preparation method for the synthetic leather that this comparative example provides comprises the following steps：
Using the Corvic of 100 parts by weight, the first plasticizer of 85 parts by weight, 10 parts by weight AC foaming agents
Artificial leather bottom is prepared in the barium zinc stabilizer (Ning Baidi, DC505J) of (model BF-539A) and 2 parts by weight, wherein, increase
Modeling agent includes dioctyl phthalate and soybean oil, and the parts by weight of dioctyl phthalate are 75, the parts by weight of soybean oil
For 10；
Utilize the calcium zinc stabilizer (CZ- of the Corvic of 100 parts by weight, the plasticizer of 35 parts by weight and 2 parts by weight
108) artificial leather surface layer is prepared, wherein, plasticizer includes dioctyl phthalate and soybean oil, dioctyl phthalate
Parts by weight are 25, and the parts by weight of soybean oil are 10；
PVC slurries are coated with base fabric and are used as adhesive, and above-mentioned artificial leather bottom and above-mentioned artificial leather surface layer are arranged on
In base fabric, prefoam composite bed is obtained；
Foaming processing is carried out to prefoam composite bed, obtains artificial leather, the frothing percentage for processing of foaming is 3.
The 57th article the synthetic leather in above-described embodiment 10 to 16 is tested according to REACH regulations, can from test report
To find out, the synthetic leather in above-described embodiment 10 to 16 does not detect the material in SVHC, meets European Union environmental protection requirement.
Also, to mechanical property (tensile load, the tear of the synthetic leather in above-described embodiment 10 to 16 and comparative example 1
Load, the intensity that rises brokenly, peel load) detected, test result is as shown in the table：
| Performance | Tensile load | Tear load | Rise brokenly intensity | Peel load |
| Unit | N | N | MPa | N |
| Embodiment 1 | 366 | 18 | 1.2 | 21 |
| Embodiment 2 | 369 | 18 | 1.2 | 21 |
| Embodiment 3 | 371 | 18 | 1.3 | 21 |
| Embodiment 4 | 396 | 20 | 1.4 | 22 |
| Embodiment 5 | 385 | 21 | 1.4 | 22 |
| Embodiment 6 | 401 | 21 | 1.4 | 22 |
| Embodiment 7 | 407 | 21 | 1.4 | 23 |
| Embodiment 8 | 419 | 23 | 1.5 | 23 |
| Embodiment 9 | 415 | 23 | 1.5 | 23 |
| Embodiment 10 | 421 | 23 | 1.5 | 23 |
| Embodiment 11 | 416 | 23 | 1.5 | 23 |
| Embodiment 12 | 422 | 24 | 1.6 | 24 |
| Embodiment 13 | 418 | 24 | 1.6 | 24 |
| Embodiment 14 | 426 | 25 | 1.7 | 24 |
| Embodiment 15 | 429 | 25 | 1.7 | 25 |
| Embodiment 16 | 441 | 26 | 1.7 | 25 |
| Comparative example 1 | 350 | 16 | 1.1 | 20 |
The artificial leather that can be seen that from above-mentioned test result in the embodiment of the present application 10 to 16 can have excellent resist
The mechanical properties such as tensile strength；Also, compared to the artificial leather in comparative example 1, the artificial leather in embodiment 10 to 16 can have
There is more preferable mechanical property.
As can be seen from the above description, the above embodiments of the present invention realize following technique effect：The application's
The first raw material calendering formation of polyvinyl chloride, the first plasticizer and uric acid class foaming agent will first be included in above-mentioned preparation method, obtained
To synthetic leather bottom, but the coating adhesive in base fabric, and synthetic leather bottom and synthetic leather surface layer order are arranged at base fabric
On, prefoam composite bed is obtained, foaming processing finally is carried out to prefoam composite bed, obtains synthetic leather, so as to by will be existing
The azo foaming agent used in technology replaces with uric acid class foaming agent, avoids a large amount of caused by azo foaming agent decomposition
Influence of the gas residue to environment, and then the excellent properties having in itself using uric acid class foaming agent, and combine above-mentioned foaming agent
For species by the way that blowing temperature is defined into 135~205 DEG C, the synthetic leather for enabling to be prepared has higher environmental-protecting performance.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of preparation method of synthetic leather, it is characterised in that the preparation method comprises the following steps：
S1, the first raw material calendering formation of polyvinyl chloride, the first plasticizer and uric acid class foaming agent will be included, obtain synthetic leather bottom
Layer；
S2, the coating adhesive in base fabric, and the synthetic leather bottom and synthetic leather surface layer order are arranged in the base fabric,
Obtain prefoam composite bed；
S3, foaming processing is carried out to the prefoam composite bed, obtain the synthetic leather, the blowing temperature of the foaming processing is
135~205 DEG C.
2. preparation method according to claim 1, it is characterised in that in the step S1, by the first raw material pressure
The temperature for prolonging shaping is 150~170 DEG C.
3. preparation method according to claim 1, it is characterised in that the weight of polyvinyl chloride described in first raw material
Part is 100 parts, and the parts by weight of the uric acid class foaming agent are 4~12, and preferably described uric acid class foaming agent includes amino chemical combination
Thing, preferably described amino compound are melamine cyanurate.
4. preparation method according to claim 3, it is characterised in that the parts by weight of first plasticizer are 90~110,
It is preferred that first plasticizer includes dioctyl phthalate and soybean oil, the weight of more preferably described dioctyl phthalate
It is 50~105 to measure part, and the parts by weight of the soybean oil are 5~60.
5. preparation method according to claim 3, it is characterised in that first raw material also includes liquid barium zinc stabilizer
With the first plasticizing aid, the parts by weight of liquid barium zinc stabilizer described in preferably described first raw material are 1.5~3.5, the first modeling
The parts by weight for changing auxiliary agent are 1.5~4.5, and more preferably described first plasticizing aid is acrylate.
6. preparation method according to any one of claim 1 to 5, it is characterised in that the step S2 the step of it
Before, the preparation method is further comprising the steps of：
The synthetic leather surface layer is prepared using the second raw material including polyvinyl chloride and the second plasticizer.
7. preparation method according to claim 6, it is characterised in that the parts by weight of the polyvinyl chloride are 100, described the
The parts by weight of two plasticizer are 43~130, and preferably described second plasticizer includes dioctyl phthalate and soybean oil, more excellent
The parts by weight for selecting the dioctyl phthalate are 40~120, and the parts by weight of the soybean oil are 3~10.
8. preparation method according to claim 6, it is characterised in that second raw material also include parts by weight be 1.5~
3.5 calcium zinc stabilizer and parts by weight is 0~3 the second plasticizing aid, and preferably described second plasticizing aid is acrylate.
9. preparation method according to claim 1, it is characterised in that in the step S3, the hair of the foaming processing
Bubble rate is 1.5~2.5.
10. preparation method according to claim 1, it is characterised in that the foaming processing includes multiple blowing temperatures not
Same foaming processing stage, preferably described foaming handle first that the blowing temperature for including carrying out successively is 135~140 DEG C and foamed
Processing stage, the second of 140~150 DEG C the foaming processing stage, the 3rd of 180~205 DEG C the foaming processing stage and 160~
170 DEG C of the 4th foaming processing stage, the foamed time of more preferably each foaming processing stage is each independently 1.5~
3.5min。
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| CN108997668A (en) * | 2018-04-23 | 2018-12-14 | 佛山市高明尚昂科技有限公司 | A kind of synthetic leather and its production technology of silencing and damping |
| CN114277581A (en) * | 2021-12-27 | 2022-04-05 | 陈永裕 | Synthetic leather and preparation method thereof |
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Application publication date: 20180406 |