CN107672190A - The preparation method of synthetic leather - Google Patents
The preparation method of synthetic leather Download PDFInfo
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- CN107672190A CN107672190A CN201710967111.3A CN201710967111A CN107672190A CN 107672190 A CN107672190 A CN 107672190A CN 201710967111 A CN201710967111 A CN 201710967111A CN 107672190 A CN107672190 A CN 107672190A
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- parts
- synthetic leather
- weight
- preparation
- 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
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
-
- 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
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
Abstract
The invention provides a kind of preparation method of synthetic leather.The preparation method comprises the following steps：S1, PVC, TPU and the first plasticizer the first raw material calendering formation will be included, obtain synthetic leather surface layer, the temperature of calendering formation is 130~170 DEG C；S2, the 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, wherein synthetic leather bottom includes foaming agent；And S3, foaming processing is carried out to prefoam composite bed, obtains synthetic leather.Synthetic leather surface layer is prepared by the way that the part PVC in raw material is replaced with into TPU and by the limit temperature of calendering formation in above-mentioned preferable parameter area, the synthetic leather for enabling to be prepared has higher tensile property and anti-wear performance in above-mentioned preparation method.
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.
The binder pastes such as PVC are generally first coated with the preparation technology of synthetic leather in base fabric, then prepare surface layer and bottom
Layer, wherein first calendering formation goes out bottom, melting state while hot while bottom film draws from calendering disk roller and taken out fits to bottom
On cloth, then the surface layer film of calendering formation is bonded in the same way, finally to the production after bottom and surface layer fitting
Thing carries out foaming processing to obtain synthetic leather.
However, synthetic leather conventional at present under the customer demand of lower thickness, exist tensile property and anti-wear performance compared with
The defects of poor.
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 tensile property and poor anti-wear performance.
To achieve these goals, according to an aspect of the invention, there is provided a kind of preparation method of synthetic leather, including
Following steps：S1, PVC, TPU and the first plasticizer the first raw material calendering formation will be included, obtain synthetic leather surface layer, be rolled into
The temperature of type is 130~170 DEG C；S2, the coating adhesive in base fabric, and synthetic leather bottom and synthetic leather surface layer order are set
In in base fabric, obtaining prefoam composite bed, wherein synthetic leather bottom includes foaming agent；And S3, prefoam composite bed is carried out
Foaming is handled, and obtains synthetic leather.
Further, in step sl, it is 145~160 DEG C by the temperature of the first raw material calendering formation.
Further, it is based on 100 parts by PVC parts by weight, the parts by weight of the first plasticizer are 73~130, preferably first
PVC parts by weight are 20~50 parts in raw material, and TPU parts by weight are 50~80 parts.
Further, the first plasticizer includes dioctyl phthalate and soybean oil, the weight of dioctyl phthalate
It is 70~110 to measure part, and the parts by weight of soybean oil are 3~20.
Further, the first raw material also includes liquid barium zinc stabilizer, liquid barium zinc stabilizer in preferably the first raw material
Parts by weight are 1.0~3.5.
Further, TPU is polyethers TPU, preferably halogen-free flameproof polyethers TPU.
Further, in step s 2, forming the second raw material of synthetic leather bottom includes the PVC, weight that parts by weight are 100
The foaming agent that part is 110~190 the second plasticizer and parts by weight are 3~8, preferably the second plasticizer include phthalic acid
The parts by weight of dioctyl ester and soybean oil, more preferably dioctyl phthalate are 80~130, the parts by weight of soybean oil for 30~
60。
Further, in step s3, foam processing frothing percentage be 1.5~4.0.
Further, in step s3, foam processing blowing temperature be 135~230 DEG C.
Further, foaming processing includes multiple blowing temperatures different foaming processing stage, preferred pair foaming processing bag
Include the first foaming processing stage that blowing temperature is 120~150 DEG C, the second foaming processing rank that blowing temperature is 160~220 DEG C
At section, blowing temperature was 180~235 DEG C the 3rd foaming processing stage and the 4th foaming that blowing temperature is 170~193 DEG C
In the reason stage, more preferably respectively the foamed time of foaming processing stage is 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
The first raw material calendering formation including PVC, TPU and plasticizer, obtains synthetic leather surface layer, and the temperature of calendering formation be 130~
170 DEG C, however again by above-mentioned synthetic leather surface layer and synthetic leather bottom it is compound after foamed, so as to by by the part in raw material
PVC replaces with TPU to prepare synthetic leather surface layer and by the limit temperature of calendering formation in above-mentioned preferable parameter area, makes system
Standby obtained synthetic leather can have higher tensile property and anti-wear 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, conventional synthetic leather is deposited in the case of customer demand lower thickness at present
The tensile property and poor anti-wear performance the defects of.Present inventor is studied regarding to the issue above, it is proposed that a kind of
The preparation method of synthetic leather, as shown in figure 1, the preparation method comprises the following steps：S1, PVC, TPU and the first plasticising will be included
First raw material calendering formation of agent, synthetic leather surface layer is obtained, the temperature of calendering formation is 130~170 DEG C；S2, applied in base fabric
Cloth adhesive, and synthetic leather bottom and synthetic leather surface layer order are arranged in base fabric, prefoam composite bed is obtained, wherein synthesizing
Leather bottom includes foaming agent；S3, foaming processing is carried out to prefoam composite bed, obtains synthetic leather.
Due to will first include PVC, TPU and plasticizer the first raw material pressure in the preparation method of the above-mentioned synthetic leather of the present invention
Prolong shaping, obtain synthetic leather surface layer, and the temperature of calendering formation is 145~160 DEG C, but again by above-mentioned synthetic leather surface layer with closing
Foamed after finished leather bottom is compound, so as to prepare synthetic leather surface layer by the way that the part PVC in raw material is replaced with into TPU and incite somebody to action
For the limit temperature of calendering formation in above-mentioned preferable parameter area, the synthetic leather for enabling to be prepared has higher stretching
Performance and anti-wear 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：PVC, TPU and the first plasticizer the first raw material calendering formation will be included, synthesized
Leather surface layer, the temperature of calendering formation is 130~170 DEG C.Those skilled in the art can use preparation conventional in the prior art
Above-mentioned synthetic leather surface layer is prepared in technique, by the way that PVC, TPU are mixed with raw materials such as plasticizer in above-mentioned preparation technology
It is even, so that plasticizer plays 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 145~160 DEG C；And, it is preferable that above-mentioned TPU is polyethers
TPU, more preferably halogen-free flameproof polyethers TPU, but and without being limited to above-mentioned preferable species, those skilled in the art may be used also
To carry out Rational choice to above-mentioned TPU species according to prior art；It is further preferable that by PVC parts by weight for based on 100 parts,
The parts by weight of above-mentioned first plasticizer are 73~130, and PVC parts by weight are 20~50 parts in the first raw material, TPU parts by weight
For 50~80 parts.
In above-mentioned preferred embodiment, those skilled in the art can be according to prior art to above-mentioned first plasticizer
Species carry out Rational choice, it is preferable that above-mentioned first plasticizer includes dioctyl phthalate and soybean oil；In order that by
The synthetic leather surface layer that above-mentioned first raw material is prepared can make synthetic leather have higher tensile property and anti-wear performance, more
Preferably, counted using PVC parts by weight as 100, the parts by weight of dioctyl phthalate are 70~110, the parts by weight of soybean oil
For 3~20.
In above-mentioned preferred embodiment, the first raw material can also include liquid barium zinc stabilizer, above-mentioned raw materials combination
The content of liquid barium zinc stabilizer can be chosen according to the actual requirements in thing, in order to further improve the property of synthetic leather surface layer
Can, it is preferable that counted using PVC parts by weight as 100, the parts by weight of liquid barium zinc stabilizer are 1.0~3.5 in feedstock composition.
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, wherein synthetic leather bottom includes foaming agent.It can use existing
Have preparation technology conventional in technology that above-mentioned synthetic leather bottom is prepared, in above-mentioned preparation technology by by polyvinyl chloride resin, hair
Infusion is well mixed with raw materials such as the second plasticizer, 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.
In above-mentioned second raw material of the application, foaming agent can use the material commonly used in existing synthesis leather goods, this Shen
Please in do not do particular determination.In order to realize more preferable foaming effect, it is preferable that above-mentioned foaming agent is selected from azodicarbonamide
(i.e. AC foaming agents) and/or azodicarbonamide potassium formate.Above-mentioned preferred class of foaming agent can not only meet different foaming times
The demand of rate, and there is relatively low cost, so as to be adapted to the demand of process lot production.
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 bottom
Performance, it is preferable that in step s 2, formed synthetic leather bottom the second raw material include parts by weight be 100 PVC, parts by weight
The foaming agent that the second plasticizer and parts by weight for 110~190 are 3~8；It is further preferable that above-mentioned second plasticizer includes
Dioctyl phthalate and soybean oil, the parts by weight of dioctyl phthalate are 80~130, and the parts by weight of soybean oil are 30
~60.
In above-mentioned preferred embodiment, it is stable that the second raw material can also include liquid barium zinc stabilizer, powder barium zinc
Any of agent, foaming stabiliser (i.e. bladder regulator), stearic acid and acrylate are a variety of, wherein, stearic acid and third
Olefin(e) acid ester is lubricant.The content of each auxiliary agent can be chosen according to the actual requirements in above-mentioned second raw material, in order to enter one
Step improves the performance of synthetic leather bottom, it is preferable that the parts by weight of liquid barium zinc stabilizer are 0.6~3 in the second raw material, powder barium
The parts by weight of zinc stabilizer are 1.0~4, and the parts by weight of foaming stabiliser are 1.5~4, and stearic parts by weight are 0.2~1.5,
And the parts by weight of acrylate are 0.3~1.5.
After above-mentioned steps S2 is completed, step S3 is performed：Foaming processing is carried out to prefoam composite bed, synthesized
Leather.Preferably, the frothing percentage of above-mentioned foaming processing is 1.5~4.0；And, it is preferable that the blowing temperature of above-mentioned foaming processing is
135~230 DEG C.It is limited in above-mentioned preferable parameter area, is enabled to by the process conditions for handling above-mentioned foaming
Synthetic leather not only have compliance high and the effect of good hand touch, but be not limited to above-mentioned preferable parameter area, this area
Technical staff can also carry out Rational choice according to the process conditions that prior art is handled above-mentioned foaming.
In above-mentioned preferred embodiment, in order to further improve the performance for the synthetic leather being prepared, it can make
State the foaming processing stage that foaming is handled including multiple blowing temperatures are different, it is preferable that including blowing temperature to foaming processing is
120~150 DEG C first foaming processing stage, 160~220 DEG C second foaming processing stage, 180~235 DEG C the 3rd hair
Steep processing stage and the 4th of 170~193 DEG C the foaming processing stage；It is further preferable that during the foaming for processing stage of respectively foaming
Between be 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 25 parts by weight, the TPU (commercially available) of 75 parts by weight, the plasticizer of 15 parts by weight and the liquid of 0.5 parts by weight
Barium zinc stabilizer (German bear board, UBZ-293TR) is mixed into the first raw material, and first raw material is rolled with 130 DEG C of temperature
Shaping, obtains synthetic leather surface layer, wherein, plasticizer includes dioctyl phthalate and soybean oil, dioctyl phthalate
Parts by weight be 65, the parts by weight of soybean oil are 10, and above-mentioned PVC, dioctyl phthalate and soybean oil are conventional commercial
Product；
Utilize the polyvinyl chloride resin of 100 parts by weight, the plasticizer of 85 parts by weight, the foaming agent of 10 parts by weight and 0.5 parts by weight
Synthetic leather bottom is prepared in liquid barium zinc stabilizer (German bear board, UBZ-293TR), wherein, plasticizer includes O-phthalic
Dioctyl phthalate and soybean oil, the parts by weight of dioctyl phthalate are 75, and the parts by weight of soybean oil are 10, and foaming agent is azo
Diformamide, 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 1.4, blowing temperature
For 125 DEG C.
Embodiment 2
The difference of the preparation method and embodiment 1 of the synthetic leather that the present embodiment provides is：
By first raw material with 170 DEG C of temperature calendering formation, synthetic leather surface layer is obtained.
Embodiment 3
The difference of the preparation method and embodiment 1 of the synthetic leather that the present embodiment provides is：
By first raw material with 160 DEG C of temperature calendering formation, synthetic leather surface layer is obtained.
Embodiment 4
The difference of the preparation method and embodiment 1 of the synthetic leather that the present embodiment provides is：
By first raw material with 145 DEG C of temperature calendering formation, synthetic leather surface layer is obtained.
Embodiment 5
The difference of the preparation method and embodiment 4 of the synthetic leather that the present embodiment provides is：
PVC parts by weight are 20, TPU parts by weight are 80, and the parts by weight of dioctyl phthalate are 22, soybean oil
Parts by weight are 4.
Embodiment 6
The difference of the preparation method and embodiment 4 of the synthetic leather that the present embodiment provides is：
PVC parts by weight are 50, TPU parts by weight are 50, and the parts by weight of dioctyl phthalate are 35, soybean oil
Parts by weight are 0.8.
Embodiment 7
The difference of the preparation method and embodiment 4 of the synthetic leather that the present embodiment provides is：
PVC parts by weight are 25, TPU parts by weight are 75, and the parts by weight of dioctyl phthalate are 25, soybean oil
Parts by weight are 3.
Embodiment 8
The feedstock composition for the synthetic leather surface layer that the present embodiment provides and the difference of embodiment 7 are：
The TPU that feedstock composition includes is halogen-free flameproof polyethers TPU (commercially available).
Embodiment 9
The difference of the preparation method and embodiment 8 of the synthetic leather that the present embodiment provides is：
The parts by weight of liquid barium zinc stabilizer are 1.0 in first raw material.
Embodiment 10
The difference of the preparation method and embodiment 8 of the synthetic leather that the present embodiment provides is：
The parts by weight of liquid barium zinc stabilizer are 3.5 in first raw material.
Embodiment 11
The difference of the preparation method and embodiment 8 of the synthetic leather that the present embodiment provides is：
The parts by weight of liquid barium zinc stabilizer are 2.5 in first raw material.
Embodiment 12
The difference of the preparation method and embodiment 11 of the synthetic leather that the present embodiment provides is：
Utilize the PVC of 100 parts by weight, the dioctyl phthalate of 80 parts by weight, the soybean oil of 30 parts by weight, 3 weight
Synthetic leather bottom is prepared in the foaming agent of part and the liquid barium zinc stabilizer of 1 parts by weight, and the frothing percentage for processing of foaming is
1.5, foaming processing includes the first foaming processing stage that blowing temperature is 120 DEG C, the second of 160 DEG C the foaming processing stage, 180
DEG C the 3rd foaming processing stage and the 4th of 170 DEG C the foaming processing stage, it is each foam processing stage foamed time be
1.5min。
Embodiment 13
The difference of the preparation method and embodiment 11 of the synthetic leather that the present embodiment provides is：
Utilize the PVC of 100 parts by weight, the dioctyl phthalate of 130 parts by weight, the soybean oil of 60 parts by weight, 7 weight
Synthetic leather bottom is prepared in the foaming agent of part and the liquid barium zinc stabilizer of 2 parts by weight, and the frothing percentage for processing of foaming is 4,
Foaming processing include the first foaming processing stage that blowing temperature is 150 DEG C, the second of 220 DEG C foam processing stage, 235 DEG C
3rd foaming processing stage and the 4th of 193 DEG C the foaming processing stage, each foamed time for foaming processing stage is 3.5min.
Embodiment 14
The difference of the preparation method and embodiment 11 of the synthetic leather that the present embodiment provides is：
Utilize the PVC of 100 parts by weight, the dioctyl phthalate of 100 parts by weight, the soybean oil of 40 parts by weight, 5 weight
The foaming agent of part, the liquid barium zinc stabilizer (German bear board, UBZ-293TR) of 1 parts by weight, the foaming stabilization that parts by weight are 0.1
Synthetic leather bottom is prepared in agent (commercially available) and the stearic acid that parts by weight are 0.2, and the frothing percentage for processing of foaming is 2.1, foaming
Processing includes the first foaming processing stage that blowing temperature is 140 DEG C, the second of 202 DEG C the foaming processing stage, the 3rd of 210 DEG C the
Foam processing stage and the 4th of 190 DEG C the foaming processing stage, each foamed time for foaming processing stage is 2.5min.
Embodiment 15
The synthetic leather and the difference of embodiment 14 that the present embodiment provides are：
The parts by weight of liquid barium zinc stabilizer are 0.6, the parts by weight of foaming stabiliser are 1.5, and stearic parts by weight are
0.3。
Embodiment 16
The synthetic leather and the difference of embodiment 14 that the present embodiment provides are：
The parts by weight of liquid barium zinc stabilizer are 3, the parts by weight of foaming stabiliser are 4, and stearic parts by weight are 1.5.
Embodiment 17
The synthetic leather and the difference of embodiment 14 that the present embodiment provides are：
Utilize the PVC of 100 parts by weight, the dioctyl phthalate of 90 parts by weight, the soybean oil of 40 parts by weight, 5 weight
The foaming agent of part, the liquid barium zinc stabilizer (German bear board, UBZ-293TR) of 2 parts by weight, the foaming stabiliser that parts by weight are 3
Synthetic leather bottom is prepared in the stearic acid that (commercially available) and parts by weight are 1, and the frothing percentage for processing of foaming is 1.8, foaming processing
Including the first foaming processing stage, the second of 200 DEG C the foaming processing stage, the 3rd of 210 DEG C the foaming that blowing temperature is 135 DEG C
Processing stage and the 4th of 185 DEG C the foaming processing stage, each foamed time for foaming processing stage is 2min.
Comparative example 1
The synthetic leather and the difference of embodiment 1 that this comparative example provides are：
The PVC of 100 parts by weight and 35 parts by weight plasticizer are mixed into the first raw material.
Comparative example 2
The synthetic leather and the difference of embodiment 1 that this comparative example provides are：
By the first raw material with 140 DEG C of temperature calendering formation, synthetic leather surface layer is obtained.
The mechanical property of synthetic leather prepared by above-described embodiment 1 to 17 and comparative example 1 to 2 (tensile load, is torn and born
Lotus, the intensity that rises brokenly, peel load) detected.
Wherein, the method for testing of tensile load：Carried out by the regulation in GB13022, graticule spacing is 100mm, experiment speed
Spend for 200mm/min, as a result represented by the arithmetic mean of instantaneous value of warp, each three pieces of samples of latitude；
Tear the method for testing of load：Sample is cut along the direction parallel to the length of side in the center of sample short side
75mm, the both ends of incision are sandwiched in into opposite direction on the fixture for meeting the regulation cupping machine in GB13022, with 200mm/
Min draw speed is tested, and the peak load that record sample is torn, is as a result put down by the arithmetic of warp, each three pieces of samples of latitude
Average represents；
Peel load is carried out by the regulation in GB8008；The intensity that rises brokenly is carried out according to the regulation in GB/T7742.
Test result is as shown in the table：
| Performance | Tensile load | Tear load | Rise brokenly intensity | Peel load | Wearability index |
| Unit | N | N | MPa | N | Grade |
| Embodiment 1 | 366 | 18 | 1.1 | 20 | 4-5 |
| Embodiment 2 | 371 | 18 | 1.1 | 20 | 4-5 |
| Embodiment 2 | 377 | 18 | 1.1 | 20 | 4-5 |
| Embodiment 4 | 373 | 18 | 1.1 | 20 | 4-5 |
| Embodiment 5 | 436 | 22 | 1.2 | 21 | 4-5 |
| Embodiment 6 | 434 | 22 | 1.2 | 21 | 4-5 |
| Embodiment 7 | 441 | 22 | 1.2 | 21 | 4-5 |
| Embodiment 8 | 459 | 23 | 1.2 | 21 | 4-5 |
| Embodiment 9 | 475 | 25 | 1.2 | 22 | 4-5 |
| Embodiment 10 | 481 | 25 | 1.2 | 22 | 4-5 |
| Embodiment 11 | 476 | 25 | 1.2 | 22 | 4-5 |
| Embodiment 12 | 511 | 29 | 1.3 | 21 | 5 |
| Embodiment 13 | 522 | 29 | 1.3 | 22 | 5 |
| Embodiment 14 | 576 | 32 | 1.3 | 22 | 5 |
| Embodiment 15 | 579 | 32 | 1.3 | 22 | 5 |
| Embodiment 16 | 586 | 32 | 1.3 | 22 | 5 |
| Embodiment 17 | 593 | 33 | 1.3 | 22 | 5 |
| Comparative example 1 | 362 | 17 | 1.1 | 20 | 4 |
| Comparative example 2 | 363 | 17 | 1.1 | 20 | 4 |
It is can be seen that from above-mentioned test result compared to the synthetic leather in comparative example 1 to 2, in the embodiment of the present application 1 to 17
Synthetic leather can have the mechanical property such as excellent tensile strength and anti-wear performance；Also, compared in comparative example 1
The harder feel of synthetic leather, the feel of synthetic leather is softer in the embodiment of the present application 1 to 17；Compared to synthetic leather in comparative example 1
Difficulty of processing is larger, and the synthetic leather in the embodiment of the present application 1 to 17 has less difficulty of processing.
As can be seen from the above description, the above embodiments of the present invention realize following technique effect：The present invention's
PVC, TPU and plasticizer the first raw material calendering formation will first be included in preparation method, obtain synthetic leather surface layer, and calendering formation
Temperature be 145~160 DEG C, but again by above-mentioned synthetic leather surface layer and synthetic leather bottom it is compound after foamed, so as to pass through
Part PVC in raw material is replaced with into TPU to prepare synthetic leather surface layer and by the limit temperature of calendering formation above-mentioned preferable
In parameter area, the synthetic leather for enabling to be prepared has higher tensile property and anti-wear 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, PVC, TPU and the first plasticizer the first raw material calendering formation will be included, obtain synthetic leather surface layer, it is described to be rolled into
The temperature of type is 130~170 DEG C；
S2, the coating adhesive in base fabric, and synthetic leather bottom and synthetic leather surface layer order are arranged in the base fabric,
Prefoam composite bed is obtained, wherein the synthetic leather bottom includes foaming agent；And
S3, foaming processing is carried out to the prefoam composite bed, obtains the synthetic leather.
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 145~160 DEG C.
3. preparation method according to claim 1, it is characterised in that the parts by weight by the PVC are described for based on 100 parts
The parts by weight of first plasticizer are 73~130, and PVC parts by weight described in preferably described first raw material are 20~50 parts, described
TPU parts by weight are 50~80 parts.
4. preparation method according to claim 3, it is characterised in that it is pungent that first plasticizer includes phthalic acid two
Ester and soybean oil, the parts by weight of the dioctyl phthalate are 70~110, and the parts by weight of soybean oil are 3~20.
5. preparation method according to claim 4, it is characterised in that it is stable that first raw material also includes liquid barium zinc
Agent, the parts by weight of liquid barium zinc stabilizer described in preferably described first raw material are 1.0~3.5.
6. preparation method according to claim 1, it is characterised in that the TPU is polyethers TPU, and preferably Halogen hinders
Fire polyethers TPU.
7. preparation method according to claim 1, it is characterised in that in the step S2, form the synthetic leather bottom
It is 3~8 that second raw material of layer, which includes PVC, the second plasticizer that parts by weight are 110~190 and the parts by weight that parts by weight are 100,
The foaming agent, preferably described second plasticizer includes dioctyl phthalate and soybean oil, more preferably described adjacent benzene two
The parts by weight of formic acid dioctyl ester are 80~130, and the parts by weight of the soybean oil are 30~60.
8. preparation method according to claim 1, it is characterised in that in the step S3, the hair of the foaming processing
Bubble rate is 1.5~4.0.
9. preparation method according to claim 1, it is characterised in that in the step S3, the hair of the foaming processing
It is 135~230 DEG C to steep temperature.
10. preparation method according to claim 9, it is characterised in that the foaming processing includes multiple blowing temperatures not
Same foaming processing stage, foaming processing described in preferred pair include the first foaming that blowing temperature is 120~150 DEG C and handle rank
Section, the foaming processing stage of second that blowing temperature is 160~220 DEG C, the 3rd foaming processing that blowing temperature is 180~235 DEG C
Stage and the 4th foaming processing stage that blowing temperature is 170~193 DEG C, the foaming of more preferably each foaming processing stage
Time is 1.5~3.5min.
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| CN111086313A (en) * | 2019-12-17 | 2020-05-01 | 嘉兴市博尔新材料有限公司 | Polyurethane elastomer modified PVC synthetic leather and preparation method thereof |
| CN111333977A (en) * | 2020-04-15 | 2020-06-26 | 浙江路联装饰材料有限公司 | Calendering conductive decorative material and production process thereof |
| CN115418866A (en) * | 2022-09-27 | 2022-12-02 | 佛山市高明尚昂科技有限公司 | High-strength degradable bio-based artificial leather and preparation method thereof |
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Application publication date: 20180209 |