CN117754951A - TPO artificial leather and preparation method thereof - Google Patents
TPO artificial leather and preparation method thereof Download PDFInfo
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- CN117754951A CN117754951A CN202410152610.7A CN202410152610A CN117754951A CN 117754951 A CN117754951 A CN 117754951A CN 202410152610 A CN202410152610 A CN 202410152610A CN 117754951 A CN117754951 A CN 117754951A
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- 239000002649 leather substitute Substances 0.000 title claims abstract description 79
- 238000002360 preparation method Methods 0.000 title abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 122
- 239000004611 light stabiliser Substances 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 30
- 239000002994 raw material Substances 0.000 claims abstract description 21
- 239000004595 color masterbatch Substances 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 238000001125 extrusion Methods 0.000 claims abstract description 7
- 238000013329 compounding Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 239000002131 composite material Substances 0.000 claims description 34
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 21
- 239000005011 phenolic resin Substances 0.000 claims description 21
- 229920001568 phenolic resin Polymers 0.000 claims description 21
- 238000005245 sintering Methods 0.000 claims description 21
- 239000012752 auxiliary agent Substances 0.000 claims description 15
- 239000006229 carbon black Substances 0.000 claims description 7
- SIKJAQJRHWYJAI-UHFFFAOYSA-N Indole Chemical compound C1=CC=C2NC=CC2=C1 SIKJAQJRHWYJAI-UHFFFAOYSA-N 0.000 claims description 4
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 3
- 238000000498 ball milling Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000007731 hot pressing Methods 0.000 claims description 3
- 239000001023 inorganic pigment Substances 0.000 claims description 3
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 3
- HYZJCKYKOHLVJF-UHFFFAOYSA-N 1H-benzimidazole Chemical compound C1=CC=C2NC=NC2=C1 HYZJCKYKOHLVJF-UHFFFAOYSA-N 0.000 claims description 2
- XKZQKPRCPNGNFR-UHFFFAOYSA-N 2-(3-hydroxyphenyl)phenol Chemical compound OC1=CC=CC(C=2C(=CC=CC=2)O)=C1 XKZQKPRCPNGNFR-UHFFFAOYSA-N 0.000 claims description 2
- CDAWCLOXVUBKRW-UHFFFAOYSA-N 2-aminophenol Chemical compound NC1=CC=CC=C1O CDAWCLOXVUBKRW-UHFFFAOYSA-N 0.000 claims description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 2
- PZOUSPYUWWUPPK-UHFFFAOYSA-N indole Natural products CC1=CC=CC2=C1C=CN2 PZOUSPYUWWUPPK-UHFFFAOYSA-N 0.000 claims description 2
- RKJUIXBNRJVNHR-UHFFFAOYSA-N indolenine Natural products C1=CC=C2CC=NC2=C1 RKJUIXBNRJVNHR-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000012860 organic pigment Substances 0.000 claims description 2
- 125000003396 thiol group Chemical class [H]S* 0.000 claims description 2
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- 238000005422 blasting Methods 0.000 abstract description 12
- 238000012545 processing Methods 0.000 abstract description 9
- 239000004743 Polypropylene Substances 0.000 description 24
- 238000009958 sewing Methods 0.000 description 16
- 230000000694 effects Effects 0.000 description 11
- 230000000875 corresponding effect Effects 0.000 description 9
- 239000010985 leather Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 239000004744 fabric Substances 0.000 description 7
- 239000000758 substrate Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000003313 weakening effect Effects 0.000 description 5
- -1 polypropylene Polymers 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000006750 UV protection Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
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- 239000003086 colorant Substances 0.000 description 1
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- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
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- 239000010959 steel Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
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- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
Landscapes
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The application relates to the technical field of automotive interiors, and particularly discloses TPO (thermoplastic polyolefin) artificial leather and a preparation method thereof. The TPO artificial leather consists of a TPO compact layer and a sponge layer, wherein the TPO compact layer is prepared from the following raw materials in parts by weight: 50-70 parts of a first TPV material; 10-20 parts of a second TPV material; 8-14 parts of high-elastic PP material; 2-4 parts of light stabilizer; 2-4 parts of color master batch; the first TPV stock was as follows: MFR (230 ℃ C./10 kg) 90-95g/10min; density: 0.85-0.95g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the Elongation at break: 300-340%; the specifications of the second TPV feed were as follows: MFR (230 ℃/10 kg) 12-15g/10min; density: 0.86-0.90g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the Elongation at break: 500-540%; the preparation method comprises the following steps: stirring and mixing a first TPV material, a second TPV material, a high-elastic PP material, a light stabilizer and color master batch, and then carrying out melt extrusion by an extruder to obtain a TPO compact layer; heating the joint surface of the TPO compact layer and the sponge layer, and then carrying out pressurizing and compounding to obtain the TPO compact layer. The TPO artificial leather has higher stitching strength and lower tearing strength, and is outstanding in satisfying both stitching processing and airbag blasting requirements.
Description
Technical Field
The application relates to the technical field of automotive interiors, in particular to TPO artificial leather and a preparation method thereof.
Background
The synthetic leather is rich in variety and can be classified into PVC synthetic leather, PU synthetic leather, TPO synthetic leather and the like according to different base materials. TPO synthetic leather is also called artificial leather, and refers to leather materials prepared by taking thermoplastic polyolefin as a base material, and has the advantages of good thermodynamic property, good wear resistance, good weather resistance and the like, and is widely applied to the fields of automotive interiors, furniture and the like. In particular to the field of automobile interiors, TPO artificial leather can be used for manufacturing components such as automobile seats, automobile steering wheels, automobile door trim panels, automobile interior instrument panels and the like.
The invention discloses a flame-retardant environment-friendly TPO synthetic leather and a preparation method thereof as disclosed in a Chinese patent application document with a patent publication number of CN105907323A, wherein the TPO synthetic leather comprises: TPO substrate, be located TPO substrate upper surface's scratch resistant coating, be located TPO substrate lower surface's gluing layer, TPO substrate includes: the modified TPO film comprises the following components in parts by weight: 10-70 parts of vulcanized TPO, 5-50 parts of polypropylene, 5-50 parts of polyethylene, 0-5 parts of light stabilizer and 4-15 parts of pigment; the preparation method comprises the following steps: (1) modified TPO membrane preparation; (2) TPO substrate preparation; (3) surface treatment; and (4) back coating.
In view of the above related art, the inventor believes that, on the one hand, based on the specificity of the TP0 material, the sewing strength is poor, and the composite fabric is often required to be used for sewing; on the other hand, when the TPO artificial leather is applied to an automobile interior instrument panel area, in order to make the airbag easy to burst and pop out, the TPO artificial leather is often required to be weakened, namely, a part of the TPO artificial leather is subjected to deep thread cutting treatment so that the airbag can smoothly and quickly pop out; however, the above conditions bring about a great limitation to the application of TPO artificial leather.
Therefore, there is a need to propose a solution to the above technical problems.
Disclosure of Invention
In order to obtain TPO artificial leather with certain sewing strength and weakening-free and airbag blasting-friendly functions under the condition that a fabric is not used, the TPO artificial leather and the preparation method thereof are provided.
In a first aspect, the present application provides a TPO artificial leather, which adopts the following technical scheme:
the TPO artificial leather consists of a TPO compact layer and a sponge layer, wherein the TPO compact layer is prepared from the following raw materials in parts by weight:
50-70 parts of a first TPV material;
10-20 parts of a second TPV material;
8-14 parts of high-elastic PP material;
2-4 parts of light stabilizer;
2-4 parts of color master batch;
the first TPV material has the following specification:
MFR (230 ℃ C./10 kg) 90-95g/10min; density: 0.85-0.95g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the Elongation at break: 300-340%;
the second TPV material has the following specifications:
MFR (230 ℃/10 kg) 12-15g/10min; density: 0.86-0.90g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the Elongation at break: 500-540%.
By adopting the technical scheme, the TPV material has excellent weather resistance, ozone resistance, ultraviolet resistance, good high-temperature performance, electrical performance, impact resistance and the like, and is suitable for various molding methods such as extrusion, injection molding and the like; the PP material is a thermoplastic resin and is polymerized by propylene monomers. The material is colorless, transparent or semitransparent, and has higher crystallinity, strength and rigidity; the two materials are used as main preparation raw materials of TPO compact layers, and have better processability in the melt extrusion processing process. Meanwhile, the TPV material comprises a first TPV material and a second TPV material, and a special molecular bonding structure can be formed in the bonding process of the TPV material and the high-elastic PP material due to the difference of the specifications of the first TPV material and the second TPV material, so that the finally obtained TPO artificial leather has higher stitching strength, meets the requirements of sewing processing on the premise of not using fabrics, has lower tearing strength, can meet the requirements of airbag blasting without weakening in use, and has outstanding overall application effect.
Preferably, the first TPV material has the following specifications:
MFR (230 ℃ C./10 kg): 95g/10min; density: 0.90g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the Elongation at break: 320%.
The second TPV material has the following specifications:
MFR (230 ℃ C./10 kg): 15g/10min; density: 0.88g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the Elongation at break: 520%.
By adopting the technical scheme, the first TPV material and the second TPV material with the specifications have better effects after being matched with the high-elastic PP, so that the obtained TPO artificial leather has higher stitching strength and lower tearing strength, has better performance in satisfying the compatibility of stitching processing and airbag blasting requirements, and further has higher application quality as a whole.
Preferably, the high-elastic PP material has the following specification:
shore hardness: 30-37A; MFR (230 ℃/2.16 kg) 0.5-1g/10min; tensile strength: 10-12Mpa; modulus of elasticity: 75-85Mpa.
By adopting the technical scheme, the high-elastic PP material with the specification can be fused and combined with the first TPV material and the second TPV material, so that plastic deformation non-uniformity is not easy to occur in the subsequent processing process; on the other hand, the TPO artificial leather can form stable and excellent combination with the first TPV material and the second TPV material, so that the TPO artificial leather can have high stitching strength and low tearing strength, and the overall application performance is excellent.
Preferably, the high-elastic PP material has the following specification:
shore hardness: 33.5A; MFR (230 ℃/2.16 kg): 0.75g/10min; tensile strength: 11Mpa; modulus of elasticity: 80Mpa.
By adopting the technical scheme, the high-elastic PP with the specification has better corresponding effect when being applied, and finally the TPO artificial leather has higher quality.
Preferably, the weight ratio of the first TPV material to the second TPV material to the high-elastic PP material is 60:15:11.
By adopting the technical scheme, when the first TPV material, the second TPV material and the high-elastic PP material in the weight ratio are mixed and melted and extruded, the synergistic effect exerted by mutual cooperation is excellent, and the mutual combination and the formed network structure distribution can further ensure that the TPO artificial leather has higher stitching strength and lower tearing strength, is excellent in the application of stitching processing and airbag blasting, and further ensures that the application performance of the TPO artificial leather is excellent.
Preferably, the light stabilizer is one or a combination of more of indole light stabilizer, phenol light stabilizer, benzimidazole light stabilizer, hydroxybenzoate light stabilizer, diphenol light stabilizer, mercapto light stabilizer and aminophenol light stabilizer.
By adopting the technical scheme, the light stabilizer of the type is suitable for preparing the TPO compact layer, can greatly improve the ageing resistance, the ultraviolet resistance and other characteristics of the TPO compact layer, further enables the finally obtained TPO artificial leather to have longer service life, can still maintain higher stitching strength and lower tearing strength after being aged, and has stable overall application effect.
Preferably, the color master batch is one or a combination of a plurality of organic pigment color master batch and inorganic pigment color master batch.
By adopting the technical scheme, the color master batch brings various colors after application, and can not influence the combination of other raw materials in the TPO compact layer, so that the product has higher richness on the premise of ensuring the stable application effect of the TPO artificial leather.
Preferably, 1-4 parts by weight of functional auxiliary agent is added into the raw material of the TPO compact layer, wherein the functional auxiliary agent consists of a composite sintering material and phenolic resin, and the weight ratio of the composite sintering material to the phenolic resin is 1 (3-7); the composite sintering material is prepared by the following steps:
taking TiH with the weight ratio of (2-3) to (6-9) 1 2 Ball milling and mixing SiC and carbon black, hot pressing and sintering, cooling, crushing and sieving to obtain the composite sintered material.
By adopting the technical scheme, tiH 2 The composite sintered material obtained by mixing and sintering the SiC and the carbon black is actually particles with a layered structure, and more holes exist in the composite sintered material due to the higher content of the SiC, so that the composite sintered material with the structure is easy to puncture in the sewing process, cannot be loosened after puncture, and can greatly improve the stability of a TPO compact layer in the sewing process, thereby improving the overall sewing strength of TPO artificial leather; the use of phenolic resin can make the internal three-dimensional network structure of TPO compact layer become nonuniform to a certain extent, reduce tearing strength and be more suitable for the airbag blasting requirement; meanwhile, when the composite sintering material and the phenolic resin are matched to form the functional auxiliary agent for use, the composite sintering material and the phenolic resin can bring about the function of compounding synergism, and on the premise of ensuring the structural integrity of the TPO compact layer, the TPO artificial leather obtained by applying the TPO compact layer is more suitable for the requirements of suture processing and airbag blasting, and the overall applicability is further improved.
Preferably, the weight ratio of the composite sintering material to the phenolic resin is 1:5.
By adopting the technical scheme, when the composite sintering material and the phenolic resin with the weight ratio are matched for use, the corresponding effect brought is stable and excellent, and finally the obtained TPO artificial leather has better performance in terms of high stitching strength and low tearing strength and has higher overall application quality.
In a second aspect, the present application provides a method for preparing a TPO artificial leather, which adopts the following technical scheme:
the preparation method of the TPO artificial leather comprises the following steps:
(1) Preparing raw materials comprising a first TPV material, a second TPV material, a high-elastic PP material, a light stabilizer and a masterbatch according to a proportion;
(2) Stirring and mixing the first TPV material, the second TPV material, the high-elastic PP material, the light stabilizer and the color master batch in the step (1), and then carrying out melt extrusion by an extruder to obtain a TPO compact layer;
(3) And heating the joint surface of the TPO compact layer and the sponge layer, and then carrying out pressurized compounding to obtain the TPO artificial leather.
By adopting the technical scheme, the preparation method is simple to operate, is suitable for large-scale industrial production, and the obtained TPO artificial leather can meet the corresponding requirement of the sewing strength, does not need to be matched with fabrics for use in the subsequent application process, has lower tearing strength, has the application effect of avoiding weakening and facilitating airbag blasting, and has outstanding integral performance.
In summary, the present application has the following beneficial effects:
1. because the application adopts the first TPV material and the second TPV material with two different specifications respectively and is combined with the high-elastic PP material, the first TPV material and the second TPV material form a special molecular combination structure, so that TPO artificial leather obtained by applying a TPO compact layer has higher sewing strength, can meet the sewing processing requirement without using fabric matching, can meet the airbag blasting requirement without weakening in the application process, and has outstanding overall application effect;
2. the functional auxiliary agent composed of the composite sintering material and the phenolic resin is used in the TPO compact layer, so that the application capability of the TPO artificial leather obtained by applying the TPO compact layer in sewing and airbag blasting is further improved, and the TPO artificial leather is more outstanding in performance of high sewing strength and low tearing strength and better in application performance.
Detailed Description
The present application is described in further detail below in connection with preparation examples, examples and comparative examples.
The raw materials used in the respective preparation examples, examples and comparative examples of the present application are commercially available except for the specific description:
the sponge layer is a GXC-MPP15F polypropylene foam board.
Phenolic resin was purchased from holy special SP1068.
Examples of preparation of starting materials and/or intermediates
Preparation example 1
A composite sintered material is prepared by the following method:
taking TiH with the weight ratio of 2.5:7.5:1 2 Ball milling and mixing SiC and carbon black, hot pressing and sintering, heat preservation at 1600 ℃ and 15MPa for 2 hours, cooling, crushing and sieving with 200 meshes to obtain the composite sintering material.
Preparation example 2
A composite sintered material, which is different from preparation example 1 in that TiH 2 The weight ratio of SiC to carbon black was 2:6:1.
Preparation example 3
A composite sintered material, which is different from preparation example 1 in that TiH 2 The weight ratio of SiC to carbon black was 3:9:1.
Examples
Example 1
TPO artificial leather is composed of a TPO compact layer and a sponge layer, raw materials used for the TPO compact layer and corresponding weights of the raw materials are shown in table 1, and the TPO artificial leather is prepared by the following method:
(1) Preparing raw materials comprising a first TPV material, a second TPV material, a high-elastic PP material, a light stabilizer and a masterbatch according to a proportion;
(2) Stirring and mixing the first TPV material, the second TPV material, the high-elastic PP material, the light stabilizer and the color master batch in the step (1), and then carrying out melt extrusion by an extruder to obtain a TPO compact layer, wherein the extrusion temperature is 190 ℃;
(3) Heating the joint surface of the TPO compact layer and the sponge layer at 180 ℃ for 30s, and then carrying out pressurized compounding with the compounding pressure of 5Mpa to obtain the TPO artificial leather.
Note that: the thickness of the TPO compact layer is 0.4mm, and the thickness of the sponge layer is 2.4mm. The light stabilizer was a hydroxybenzoate type light stabilizer, available from Jian Chu Shengwu UV-2908. The color master batch is an inorganic pigment color master batch and is purchased from Pan steel R248 titanium dioxide. The first TPV stock was as follows: MFR (230 ℃ C./10 kg): 95g/10min; density: 0.90g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the Elongation at break: 320%. The specifications of the second TPV feed were as follows: MFR (230 ℃ C./10 kg): 15g/10min; density: 0.88g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the Elongation at break: 520%. The specification of the high-elastic PP material is as follows: shore hardness of:33.5A; MFR (230 ℃/2.16 kg): 0.75g/10min; tensile strength: 11Mpa; modulus of elasticity: 80Mpa.
Examples 2 to 3
A TPO artificial leather is different from example 1 in that the raw materials used for the dense layer of TPO and the corresponding weights thereof are shown in Table 1.
TABLE 1 weight parts (kg/part) of the raw materials used for TPO dense layer in example 13
Example 4
A TPO imitation leather differs from example 1 in that the first TPV stock has the following specifications: MFR (230 ℃/10 kg): 90g/10min; density: 0.85g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the Elongation at break: 300%.
Example 5
A TPO imitation leather differs from example 1 in that the first TPV stock has the following specifications: MFR (230 ℃ C./10 kg): 95g/10min; density: 0.95g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the Elongation at break: 340%.
Example 6
A TPO imitation leather, differing from example 1 in the following specifications for the second TPV material: MFR (230 ℃/10 kg): 12g/10min; density: 0.86g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the Elongation at break: 500%.
Example 7
A TPO imitation leather, differing from example 1 in the following specifications for the second TPV material: MFR (230 ℃ C./10 kg): 15g/10min; density: 0.90g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the Elongation at break: 540%.
Example 8
The difference from example 1 is that the specification of the high-elastic PP material is as follows: shore hardness: 30A; MFR (230 ℃/2.16 kg): 0.5g/10min; tensile strength: 10Mpa; modulus of elasticity: 75Mpa.
Example 9
The difference from example 1 is that the specification of the high-elastic PP material is as follows: shore hardness: 37A; MFR (230 ℃/2.16 kg) 1g/10min; tensile strength: 12Mpa; modulus of elasticity: 85Mpa.
Example 10
The difference with example 1 is that 2.5 parts by weight of functional auxiliary agent is added into the raw material of the TPO compact layer, the functional auxiliary agent is mixed with other raw materials for use, and the functional auxiliary agent consists of a composite sintering material and phenolic resin according to the weight ratio of 1:5, wherein the composite sintering material is obtained in preparation example 1.
Example 11
A TPO artificial leather is different from example 10 in that the functional auxiliary agent is added in 1 part by weight.
Example 12
A TPO artificial leather is different from example 10 in that the functional auxiliary agent is added in 4 parts by weight.
Example 13
The TPO artificial leather is different from the example 10 in that the functional auxiliary agent consists of a composite sintering material and phenolic resin according to the weight ratio of 1:3.
Example 14
The TPO artificial leather is different from the example 10 in that the functional auxiliary agent consists of a composite sintering material and phenolic resin according to the weight ratio of 1:7.
Example 15
A TPO artificial leather is different from example 10 in that a composite sinter is obtained from preparation example 2.
Example 16
A TPO artificial leather is different from example 10 in that a composite sinter is obtained from preparation example 3.
Example 17
A TPO artificial leather is different from example 10 in that a composite sinter is not used as a raw material.
Example 18
A TPO artificial leather is different from example 10 in that no phenolic resin is used as a raw material.
Comparative example
Comparative example 1
A TPO imitation leather differs from example 1 in that the first TPV material is replaced by a second TPV material in equal mass.
Comparative example 2
A TPO imitation leather differs from example 1 in that the second TPV material is replaced by the first TPV material in equal mass.
Performance test samples: the TPO artificial leather obtained in example 1-18 was used as test sample 1-18, and the TPO artificial leather obtained in comparative example 1-2 was used as control sample 1-2.
The test method comprises the following steps: test samples 1-18 and control samples 1-2 were tested as required in BMW5A2A46/6TPO for sewability, with the test items being seam strength, tear strength (normal) and tear strength (after heat aging), and the corresponding results are reported in Table 2 below.
TABLE 2 test results for test samples 1-18 and control samples 1-2
It can be seen from the combination of examples 1-3 and comparative examples 1-2 and the combination of table 2 that the first TPV material and the second TPV material of two different specifications are adopted and combined with the high-elastic PP material as main raw materials to prepare the TPO compact layer, and the TPO compact layer is applied to finally obtain the TPO artificial leather, which has higher stitching strength and lower tearing strength, can meet the requirement of stitching without using fabric cooperation, and can meet the requirement of airbag blasting without weakening. If the TPV material and the high-elastic PP material of any specification are singly used and combined, the finally obtained TPO artificial leather is found to be poor in performance of the sewing strength and the tearing strength, and the TPO artificial leather cannot be stably sewn in the practical application process, and the TPO artificial leather is required to be matched with fabrics for use, and meanwhile, the weakening method is also required to be used for meeting the requirement of airbag blasting.
As can be seen in combination with examples 1 and 4-5 and Table 2, the first TPV stock has a specification of MFR (230 ℃ C./10 kg) 90-95g/10min, density: 0.85-0.95g/cm 3 Elongation at break: 300-340%, the final TPO artificial leather is stable and better in terms of the performances of the sewing strength and the tearing strength, wherein when the specification of the first TPV material is MFR (230 ℃/10 kg): 95g/10min, density: 0.90g/cm 3 Elongation at break: at 320%, the corresponding quality of TPO imitation leather is the best.
As can be seen in combination with examples 1 and 6-7 and Table 2, the second TPV stock has a gauge of MFR (230 ℃ C./10 kg) of 12-15g/10min, density: 0.86-0.90g/cm 3 Elongation at break: 500-540%, the final TPO artificial leather is stable and better in terms of the performances of the sewing strength and the tearing strength, wherein when the specification of the second TPV material is MFR (230 ℃/10 kg): 15g/10min, density: 0.88g/cm 3 Elongation at break: at 520%, the corresponding quality of TPO artificial leather is optimal.
As can be seen in combination with examples 1 and 8-9 and table 2, the high-elastic PP material has a shore hardness: 30-37A, MFR (230 ℃/2.16 kg) 0.5-1g/10min, tensile strength: 10-12Mpa, modulus of elasticity: when 75-85Mpa, the finally obtained TPO artificial leather is stable and better in the performances of the sewing strength and the tearing strength, wherein when the specification of the high-elastic PP material is Shore hardness: 33.5A, MFR (230 ℃ C./2.16 kg): 0.75g/10min, tensile strength: 11Mpa, modulus of elasticity: at 80Mpa, the TPO artificial leather has the best quality.
As can be seen from the combination of examples 1 and 10 to 14 and the combination of table 2, the use of the functional auxiliary agent composed of the composite sinter and the phenolic resin in the compact layer of TPO can further bring about an improvement in the seam strength and a decrease in the tear strength, so that the TPO artificial leather is more suitable for the seam processing and the airbag blasting, and is more excellent in compatibility, wherein when the weight ratio of the composite sinter to the phenolic resin is 1:5, the phase of the TPO artificial leather is obtainedThe effect is better. In combination with examples 15 to 16 and with Table 2, it can be seen that the ratio by weight of TiH is (2-3): (6-9): 1 2 The composite sintered material prepared by taking SiC and carbon black as raw materials can be matched with phenolic resin to exert excellent and stable action effect. It can be seen from the combination of examples 17 to 18 and table 2 that if any one of the composite sinter and the phenolic resin is used alone in the compact layer of TPO, the corresponding effects are limited, and the sum of the effects is far less than the effect caused by the combination of the two, so that the functional auxiliary agent composed of the composite sinter and the phenolic resin has a remarkable effect on improving the application quality of the TPO artificial leather.
The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the claims of the present application.
Claims (10)
1. The TPO artificial leather is characterized by comprising a TPO compact layer and a sponge layer, wherein the TPO compact layer is prepared from the following raw materials in parts by weight:
50-70 parts of a first TPV material;
10-20 parts of a second TPV material;
8-14 parts of high-elastic PP material;
2-4 parts of light stabilizer;
2-4 parts of color master batch;
the first TPV material has the following specification:
MFR (230 ℃ C./10 kg) 90-95g/10min; density: 0.85-0.95g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the Elongation at break: 300-340%;
the second TPV material has the following specifications:
MFR (230 ℃/10 kg) 12-15g/10min; density: 0.86-0.90g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the Elongation at break: 500-540%.
2. The TPO artificial leather according to claim 1, wherein: the first TPV material has the following specification:
MFR (230 ℃ C./10 kg): 95g/10min; density: 0.90g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the Elongation at break: 320%.
The second TPV material has the following specifications:
MFR (230 ℃ C./10 kg): 15g/10min; density: 0.88g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the Elongation at break: 520%.
3. The TPO artificial leather according to claim 1, wherein: the high-elastic PP material has the following specification:
shore hardness: 30-37A; MFR (230 ℃/2.16 kg) 0.5-1g/10min; tensile strength: 10-12Mpa; modulus of elasticity: 75-85Mpa.
4. The TPO artificial leather according to claim 3, wherein: the high-elastic PP material has the following specification:
shore hardness: 33.5A; MFR (230 ℃/2.16 kg): 0.75g/10min; tensile strength: 11Mpa; modulus of elasticity: 80 And (3) Mpa.
5. The TPO artificial leather according to claim 4, wherein: the weight ratio of the first TPV material to the second TPV material to the high-elastic PP material is 60:15:11.
6. The TPO artificial leather according to claim 1, wherein: the light stabilizer is one or a combination of more of indole light stabilizer, phenol light stabilizer, benzimidazole light stabilizer, hydroxybenzoate light stabilizer, diphenol light stabilizer, mercapto light stabilizer and aminophenol light stabilizer.
7. The TPO artificial leather according to claim 1, wherein: the color master batch is one or a combination of a plurality of organic pigment color master batch and inorganic pigment color master batch.
8. The TPO artificial leather according to claim 1, wherein: 1-4 parts by weight of functional auxiliary agent is added into the raw materials of the TPO compact layer, wherein the functional auxiliary agent consists of a composite sintering material and phenolic resin, and the weight ratio of the composite sintering material to the phenolic resin is 1 (3-7); the composite sintering material is prepared by the following steps:
taking TiH with the weight ratio of (2-3) to (6-9) 1 2 Ball milling and mixing SiC and carbon black, hot pressing and sintering, cooling, crushing and sieving to obtain the composite sintered material.
9. The TPO artificial leather according to claim 8, wherein: the weight ratio of the composite sintering material to the phenolic resin is 1:5.
10. The method for producing TPO artificial leather according to claim 1, wherein: the method comprises the following steps:
(1) Preparing raw materials comprising a first TPV material, a second TPV material, a high-elastic PP material, a light stabilizer and a masterbatch according to a proportion;
(2) Stirring and mixing the first TPV material, the second TPV material, the high-elastic PP material, the light stabilizer and the color master batch in the step (1), and then carrying out melt extrusion by an extruder to obtain a TPO compact layer;
(3) And heating the joint surface of the TPO compact layer and the sponge layer, and then carrying out pressurized compounding to obtain the TPO artificial leather.
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