CN114414469A - Method for testing hot bonding strength of PVC plastic layer - Google Patents
Method for testing hot bonding strength of PVC plastic layer Download PDFInfo
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- CN114414469A CN114414469A CN202111443531.4A CN202111443531A CN114414469A CN 114414469 A CN114414469 A CN 114414469A CN 202111443531 A CN202111443531 A CN 202111443531A CN 114414469 A CN114414469 A CN 114414469A
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- pvc plastic
- bonding strength
- plastic layer
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- 239000004033 plastic Substances 0.000 title claims abstract description 45
- 229920003023 plastic Polymers 0.000 title claims abstract description 45
- 238000012360 testing method Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 39
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 26
- 229910052742 iron Inorganic materials 0.000 claims description 13
- 239000002985 plastic film Substances 0.000 claims description 10
- -1 polytetrafluoroethylene Polymers 0.000 claims description 10
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 4
- IHBCFWWEZXPPLG-UHFFFAOYSA-N [Ca].[Zn] Chemical compound [Ca].[Zn] IHBCFWWEZXPPLG-UHFFFAOYSA-N 0.000 claims description 4
- 229910052791 calcium Inorganic materials 0.000 claims description 4
- 239000011575 calcium Substances 0.000 claims description 4
- BJAJDJDODCWPNS-UHFFFAOYSA-N dotp Chemical compound O=C1N2CCOC2=NC2=C1SC=C2 BJAJDJDODCWPNS-UHFFFAOYSA-N 0.000 claims description 4
- 239000012760 heat stabilizer Substances 0.000 claims description 4
- 229920006255 plastic film Polymers 0.000 claims description 4
- 239000004014 plasticizer Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 238000009864 tensile test Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 abstract description 40
- 239000011229 interlayer Substances 0.000 abstract description 6
- 238000002360 preparation method Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000004154 testing of material Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 10
- 238000009472 formulation Methods 0.000 description 9
- 239000002649 leather substitute Substances 0.000 description 8
- 239000010985 leather Substances 0.000 description 7
- 239000000047 product Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 235000010215 titanium dioxide Nutrition 0.000 description 3
- 238000013329 compounding Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000009823 thermal lamination Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention belongs to the technical field of material testing, and relates to a method for testing the hot bonding strength of a PVC plastic layer. The testing method comprises four steps of preparation of the PVC thin layer, heat fitting of the thin layer and peeling testing. The testing method has clear and simple steps and strong practicability. The method combines a measurement mode of accurately measuring the interlayer bonding strength on the basis of simulating a real multilayer formula. The testing method has the advantages of simple related instrument configuration, mild testing conditions, concise and clear operation procedures and high accuracy of testing results.
Description
Technical Field
The invention belongs to the technical field of material testing, and relates to a method for testing the hot bonding strength of a PVC plastic layer.
Background
The PVC artificial leather is widely applied to different fields of civil use, automobiles and the like, such as leather, car seat leather, interior leather and the like, and has the characteristics of wear resistance, aging resistance, color change resistance, strong plasticity, good processability, high cost performance and the like. Many PVC artificial leathers are multi-layer composite, and include at least one or more layers of a surface layer, a foamed layer, a knitted fabric or a woven fabric, and are processed by a process such as coating, calendering or laminating. Because the PVC artificial leather is formed by compounding multiple layers, the quality and the durability of the PVC artificial leather are directly influenced by the bonding strength between the layers. The existing testing method can not accurately and quantitatively measure the interlayer bonding strength, and has the advantages of low accuracy and complex operation.
Disclosure of Invention
In view of the above technical problems, the present invention has an object to: a test method capable of simulating the hot bonding condition of a PVC plastic layer, sample preparation and testing the interlayer bonding strength is provided. The method combines a measurement mode of accurately measuring the interlayer bonding strength on the basis of simulating a real multilayer formula. The testing method has the advantages of simple related instrument configuration, mild testing conditions, concise and clear operation procedures and high accuracy of testing results.
The technical scheme provided by the invention is as follows:
a method for testing the hot bonding strength of a PVC plastic layer comprises the following steps:
s1: respectively preparing premix according to different formulas of the PVC plastic layer to be tested, respectively and uniformly mixing, and respectively numbering different formulas;
s2: according to the process requirements, the prepared premixes with different formulas are processed into slices with different formulas by an open mill;
s3: cutting the prepared sheet into strips with the same size;
s4: the sheets prepared by one formula are taken as a first PVC plastic layer, the sheets prepared by each formula are taken as a second PVC plastic layer, and the sheets are respectively superposed into samples with two PVC plastic layers and numbered;
s5: placing a sufficient amount of polytetrafluoroethylene plastic film covering half the area of the sheet between the two sheets of each sample;
s6: placing the same iron plates on the upper part and the lower part of each sample respectively;
s7: smoothly putting each sample into an oven preheated to 190 ℃, placing a weight above an iron plate of the sample, keeping for 5min, and taking out;
s8: after the sample is kept stand and cooled, the heavy object is taken down, and the upper and lower iron sheets are opened to take out the sample;
s9: taking out the polytetrafluoroethylene plastic sheet, and cutting the polytetrafluoroethylene plastic sheet into tensile sample strips;
s10: and (3) carrying out a tensile test by using a tensile machine, clamping the ends, which are not jointed, of the two PVC plastic layers by using sample clamps of the tensile machine respectively, and recording the maximum force as a test result.
In step S1, in different formulations, the mass ratio of each component is PVC resin: plasticizer DOTP: heavy calcium powder: titanium dioxide: the environment-friendly calcium-zinc heat stabilizer is 100: 40: 20: 1: 2.
in step S2, the process parameters of the open mill are: the rotation speed of the front wheel is 20rpm, the rotation speed of the rear wheel is 18rpm, the clearance is 0.5mm, the temperature of the front wheel is 185 ℃, the temperature of the rear wheel is 180 ℃, and the open milling time is 5 min.
In step S3, the length and width of the strip are 6cm and 5cm, respectively.
In step S6, the thickness of the iron plate is 0.5 mm.
In step S7, the weight of the weight is 2Kg in step S7.
In step S8, the cooling time is 10min
In step S9, the tensile spline has a width of 3 cm.
In step S10, the drawing rate is 200 mm/min.
The testing method adopts two layers of PVC plastic layers which are laminated together and baked at high temperature to simulate the multilayer hot laminating compounding process of PVC artificial leather. Meanwhile, the non-joint parts of the two PVC plastic layers are obtained by utilizing the polytetrafluoroethylene film, and the non-joint parts of the two PVC plastic layers are respectively stretched. When the tensile machine stretches, the positions where the two PVC plastic layers are attached are pulled in two opposite directions, and the two PVC plastic layers are attached at the fragile positions, so that the PVC plastic layers are gradually torn under the action of the pulling force. In this process, the maximum tensile force measured reflects the maximum strength of the fit between the two PVC plastic layers.
Since the formulation of one of the PVC plastic layers was the same for each sample, the formulation of the other PVC plastic layer was different between the different samples, and the formulations of the two PVC plastic layers were the same for one of the samples. In this case, the difference in bonding strength between different formulations and the cause can be analyzed by comparing the test results of different samples. The hot bonding strength between the PVC plastic layer with the same formula as that of the PVC plastic layer and other PVC plastic layers can be obtained, the structure with the best hot bonding strength is analyzed, and the research and development of PVC products are accelerated.
The test method can be used for developing PVC leather products, such as automobile PVC leather ornaments, can research the bonding strength between surface layers with different PVC formulas, shortens the development period of the PVC leather products and improves the production efficiency of the PVC leather products.
The invention has the following beneficial effects: 1. the testing method of the invention provides a sample preparation mode of a multilayer structure of the composite PVC artificial leather, which can simulate a multilayer thermal lamination composite process of the PVC artificial leather;
2. the invention provides a test method for testing interlayer bonding strength by using a tensile machine, which can simulate and test the multilayer hot bonding strength of PVC artificial leather;
3. the testing method has the advantages of simple related instrument configuration, mild testing conditions, simple and clear operation procedures and high accuracy of testing results, and is favorable for accelerating the development of PVC artificial leather.
Detailed Description
The following further describes embodiments of the present invention with reference to examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the following embodiments, PVC resin part 1 is purchased from Tai plastics company with model number S-65, PVC resin part 2 is purchased from Zhongtai company with model number SG-5, plasticizer DOTP is purchased from Union company with model number UN488, calcium powder is purchased from Omyacard 5-JI, titanium dioxide is purchased from Topython company with model number 886, and calcium-zinc heat stabilizer MC420EP is a commercial product; the two-roll open mill is purchased from Colin corporation under the model number W150E; the forced air drying oven is purchased from Binder company with the model number of FD 53; the tensile machine was purchased from mettes under model number E43.
Example 1
In this embodiment, the thermal bonding strength between two PVC plastic layers of different formulations was tested by using the method for testing the thermal bonding strength of the PVC plastic layers. The specific steps are as follows;
s1: according to the formula shown in the table 1, the PVC plastic layer premix is prepared accurately in parts by mass and is uniformly mixed:
table 1 formulation of PVC plastic layer in example 1
| Composition/formulation | 1# | 2# |
| PVC resin part 1 | 100 | 75 |
| PVC resin part 2 | 25 | |
| Plasticizer DOTP | 40 | 40 |
| Calcium powder | 20 | 20 |
| Titanium white powder | 1 | 1 |
| Calcium zinc heat stabilizer MC420EP | 2 | 2 |
S2: respectively carrying out open milling molding on the premix prepared in the S1 on a two-roll open mill according to the following process parameters to prepare sheets:
table 2 process parameters of the open mill in example 1
S3: cutting the sheet obtained in the step S2 into strips with the length and the width of 6cm and 5cm respectively;
s4: the strips obtained in S3 were stacked in the following combinations:
table 3 formulation combination of PVC plastic layer in sample of example 2
| Test specimen | 1# | 2# |
| A | 2 pieces of | |
| B | 1 piece of | 1 piece of |
S5: adding a polytetrafluoroethylene plastic film with the thickness of 0.5mm between the two layers on one side of each half of the sample prepared in the S4, wherein the size of the plastic film is enough to prevent the upper layer and the lower layer from contacting;
s6: placing the prepared sample of S5 on an iron plate with the thickness of 0.5mm, and pressing the same iron plate on the iron plate;
s7: smoothly putting the sample prepared in the S6 into an oven preheated to 190 ℃ in advance, placing a weight of 2kg above the sample iron plate, keeping for 5 minutes, and taking out;
s8: s7, standing and cooling for ten minutes, taking down the weight, opening the upper and lower iron sheets and taking out A, B two samples;
s9: taking out the polytetrafluoroethylene plastic sheet from the sample prepared in the step S8, cutting the polytetrafluoroethylene plastic sheet into a sample strip with the width of 3cm, and tearing the part which is not jointed;
s10: and (4) performing a tension test by using a tension machine, recording the maximum force as a test result, and referring to the experimental data in table 4.
Table 4 results of the maximum force test obtained in example 1
| Test specimen | First test N | Second test N | Third test N | Average value N | Standard deviation N |
| A | 9.8 | 9.7 | 9.8 | 9.8 | 0.1 |
| B | 10.6 | 10.6 | 10.7 | 10.6 | 0.1 |
The data in table 4 shows that sample a was tested three times with a maximum force average of 9.8N and a standard deviation of 0.1N; sample B was tested three times with a maximum force average of 10.6N and a standard deviation of 0.1N. The information provided by the manufacturer shows that the addition of the PVC resin part 2 can enhance the bonding strength between the hot-pressing layers, and the comparison result shows that the bonding strength between the sample B and the sample A is obviously enhanced. From the results, the conclusion can also be drawn that the method for testing the hot bonding strength of the PVC plastic layer can effectively characterize and quantitatively determine the interlayer bonding strength.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A method for testing the hot bonding strength of a PVC plastic layer is characterized by comprising the following steps:
s1: respectively preparing premix according to different formulas of the PVC plastic layer to be tested, respectively and uniformly mixing, and respectively numbering different formulas;
s2: according to the process requirements, the prepared premixes with different formulas are processed into slices with different formulas by an open mill;
s3: cutting the prepared sheet into strips with the same size;
s4: the sheets prepared by one formula are taken as a first PVC plastic layer, the sheets prepared by each formula are taken as a second PVC plastic layer, and the sheets are respectively superposed into samples with two PVC plastic layers and numbered;
s5: placing a sufficient amount of polytetrafluoroethylene plastic film covering half the area of the sheet between the two sheets of each sample;
s6: placing the same iron plates on the upper part and the lower part of each sample respectively;
s7: smoothly putting each sample into an oven preheated to 190 ℃, placing a weight above an iron plate of the sample, keeping for 5min, and taking out;
s8: after the sample is kept stand and cooled, the heavy object is taken down, and the upper and lower iron sheets are opened to take out the sample;
s9: taking out the polytetrafluoroethylene plastic sheet, and cutting the polytetrafluoroethylene plastic sheet into tensile sample strips;
s10: and (3) carrying out a tensile test by using a tensile machine, clamping the ends, which are not jointed, of the two PVC plastic layers by using sample clamps of the tensile machine respectively, and recording the maximum force as a test result.
2. The method for testing the hot bonding strength of the PVC plastic layer according to claim 1, wherein the method comprises the following steps: in the step S1, in different formulas, the mass ratio of each component is PVC resin: plasticizer DOTP: heavy calcium powder: titanium dioxide: the environment-friendly calcium-zinc heat stabilizer is 100: 40: 20: 1: 2.
3. the method for testing the hot bonding strength of the PVC plastic layer according to claim 1, wherein the method comprises the following steps: in the step S2, the process parameters of the open mill are as follows: the rotation speed of the front wheel is 20rpm, the rotation speed of the rear wheel is 18rpm, the clearance is 0.5mm, the temperature of the front wheel is 185 ℃, the temperature of the rear wheel is 180 ℃, and the open milling time is 5 min.
4. The method for testing the hot bonding strength of the PVC plastic layer according to claim 1, wherein the method comprises the following steps: in step S3, the length and width of the strip are 6cm and 5cm, respectively.
5. The method for testing the hot bonding strength of the PVC plastic layer according to claim 1, wherein the method comprises the following steps: in step S6, the thickness of the iron plate is 0.5 mm.
6. The method for testing the hot bonding strength of the PVC plastic layer according to claim 1, wherein the method comprises the following steps: in step S7, the weight of the weight is 2 Kg.
7. The method for testing the hot bonding strength of the PVC plastic layer according to claim 1, wherein the method comprises the following steps: in step S8, the cooling time is 10 min.
8. The method for testing the hot bonding strength of the PVC plastic layer according to claim 1, wherein the method comprises the following steps: in step S9, the tensile bar has a width of 3 cm.
9. The method for testing the hot bonding strength of the PVC plastic layer according to claim 1, wherein the method comprises the following steps: in the step S10, the drawing rate is 200 mm/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111443531.4A CN114414469B (en) | 2021-11-30 | 2021-11-30 | PVC plastic layer thermal bonding strength testing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111443531.4A CN114414469B (en) | 2021-11-30 | 2021-11-30 | PVC plastic layer thermal bonding strength testing method |
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| Publication Number | Publication Date |
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| CN114414469A true CN114414469A (en) | 2022-04-29 |
| CN114414469B CN114414469B (en) | 2024-04-02 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1273174A (en) * | 2000-06-02 | 2000-11-15 | 朱时贤 | Method for making sandwich plate |
| JP2007327877A (en) * | 2006-06-08 | 2007-12-20 | Meidensha Corp | Analysis method of polyvinyl chloride composition |
| CN205877810U (en) * | 2016-07-21 | 2017-01-11 | 广东工业大学 | Bookmark lamp device |
| CN112444482A (en) * | 2020-11-26 | 2021-03-05 | 百尔罗赫塑料添加剂（江苏）有限公司 | Method for testing amine resistance of PVC heat stabilizer and application |
| CN112557639A (en) * | 2020-12-25 | 2021-03-26 | 云南正邦科技有限公司 | Method for testing transparency of PVC (polyvinyl chloride) resin |
-
2021
- 2021-11-30 CN CN202111443531.4A patent/CN114414469B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1273174A (en) * | 2000-06-02 | 2000-11-15 | 朱时贤 | Method for making sandwich plate |
| JP2007327877A (en) * | 2006-06-08 | 2007-12-20 | Meidensha Corp | Analysis method of polyvinyl chloride composition |
| CN205877810U (en) * | 2016-07-21 | 2017-01-11 | 广东工业大学 | Bookmark lamp device |
| CN112444482A (en) * | 2020-11-26 | 2021-03-05 | 百尔罗赫塑料添加剂（江苏）有限公司 | Method for testing amine resistance of PVC heat stabilizer and application |
| CN112557639A (en) * | 2020-12-25 | 2021-03-26 | 云南正邦科技有限公司 | Method for testing transparency of PVC (polyvinyl chloride) resin |
Non-Patent Citations (1)
| Title |
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| 周吓星;吴栋琳;黄六莲;陈礼辉;: "木塑复合材料热稳定性的测试方法", 塑料工业, no. 04 * |
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