CN106290151A - A kind of detection method of the adhesive property of half PU leather bed material - Google Patents
A kind of detection method of the adhesive property of half PU leather bed material Download PDFInfo
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- CN106290151A CN106290151A CN201610723601.4A CN201610723601A CN106290151A CN 106290151 A CN106290151 A CN 106290151A CN 201610723601 A CN201610723601 A CN 201610723601A CN 106290151 A CN106290151 A CN 106290151A
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- 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
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Abstract
The present invention provides the detection method of the adhesive property of a kind of half PU leather bed material, comprises the following steps: 1) modulation aqueous PU leather bed material；2) PVC film is prepared；3) aqueous half PU leather preparation: the PVC film made is cut into multiple square PVC film, and square shaped PVC film carries out calculating coating weight of weighing；It is coated with in square PVC film with painting scraper and scrapes aqueous PU leather bed material, then weigh and calculate the coating weight of aqueous PU leather bed material；Base fabric is fitted in the square PVC film being coated with after scraping aqueous PU leather bed material, prepares aqueous half PU and remove from office test sample；4) performance test: by aqueous half PU leather test sample according to testing requirement be cut into width be 3cm, the strip of a length of 15 18cm leather, carry out peel strength test.In the present invention, detection method imitates actual process hides scene, can judge the adhesive property of aqueous half PU bed material effectively and rapidly, improves the product quality of half PU leather.
Description
Technical field
The present invention relates to half PU and remove from office bed material detection method field, specifically disclose the adhesive property of a kind of half PU leather bed material
Detection method.
Background technology
Aqueous half PU leather is as foaming layer with polrvinyl chloride (PVC), and aqueous polyurethane (PU) bed material is adhesive linkage, and base fabric is
Bottom, is made by dry type cladding process.Aqueous PU leather bed material is applied between PVC foam layer and base fabric, plays bonding effect,
Its adhesive property can directly affect the product quality of final aqueous half PU leather, is typically required in technical research and production process
Carrying out performance test, at present, performance test of the prior art is typically complex, the mistake of the preparation half PU leather that even loses contact with reality
Journey, causes the detection of aqueous PU leather bed material performance inaccurate.So, need the detection method of the adhesive property of a kind of half PU leather bed material badly
Actual process hides can be imitated on-the-spot, the adhesive property of aqueous half PU bed material can be judged effectively and rapidly, thus ensure final producing
Stablizing of quality, also can reduce production cost simultaneously, improves productivity effect.
Summary of the invention
It is an object of the invention to overcome existing defect, it is provided that the detection side of the adhesive property of a kind of half PU leather bed material
Method, this detection method ensure that stablizing of end product quality, also can reduce production cost simultaneously, improves productivity effect.
In order to realize object above, the present invention is by including what techniques below scheme realized: gluing of a kind of half PU leather bed material
Connect the detection method of performance, comprise the following steps:
1) modulation aqueous PU leather bed material；
Preferably, it is modulated into the aqueous PU leather bed material of different viscosities according to performance requirement, by described aqueous PU leather bed material
Viscosity controls at 8000-40000mPa s.
2) PVC film is prepared: first prepare PVC paste, then described PVC paste is prepared as PVC film；
Preferably, in described step 1) in, described PVC paste includes following raw material components and weight portion: Corvic
40-60 part；Ground calcium carbonate 15-25 part；Precipitated calcium carbonate 5-10 part；Plasticizer 25-40 part；Accelerator 1-2 part；Stabilizer 1-
3 parts.
Preferably, described plasticizer one in dioctyl phthalate and diisononyl phthalate or
Two kinds.
Preferably, the model of described Corvic one in P450, P1050 and P440.
Preferably, described accelerator is potassium salt or zinc salt.
Preferably, described stabilizer is barium salt or zinc salt.
Preferably, in described step 2) in, the preparation method of described PVC paste comprises the following steps: first by described plasticizer
Join in stirring container, sequentially add described Corvic, described ground calcium carbonate, described precipitated calcium carbonate, institute
Stating accelerator and described stabilizer, high speed dispersion is uniform, after deaeration completely, viscosity is controlled at 8000-20000mPa.s, it is thus achieved that
PVC paste.
Preferably, in described step 2) in, the process that described PVC paste is prepared as PVC film is specifically included: use and be coated with scraper
Described PVC paste being coated with and scrape on plain weave paper or mirror surface paper, put into high temperature plasticizing 45-60s in 180-200 DEG C of baking oven, room temperature cools down
3-5min, it is thus achieved that PVC film；Test with Thickness measuring instrument, by PVC film THICKNESS CONTROL at 0.34mm-0.35mm, it is ensured that follow-up test
Result accuracy.
Preferably, a length of 25-28cm of described quadrangular membrane, width is 14cm；At described square PVC film length direction
At 20cm, picture horizontal line is to make graduation mark.
3) aqueous half PU leather preparation:
The PVC dry film made is cut into multiple square PVC film, and calculating coating weight of weighing described square PVC film,
Coating weight must be in the range of normal coating weight, and normal coating weight is 100-110g/m2；
It is coated with in described square PVC film with painting scraper and scrapes described aqueous PU leather bed material, described aqueous PU of calculating of then weighing
The coating weight of leather bed material, the coating weight of described aqueous PU leather bed material must be in the range of normal coating weight, and normal coating weight is
100-110g/m2；
By base fabric along through broadwise, it is fitted in the square PVC film being coated with after scraping described aqueous PU leather bed material gently, treats described
After base fabric and described square PVC film are fitted completely, drying and processing, room temperature cools down, and prepares aqueous half PU and removes from office test sample；
Preferably, in described step 3) in, on described quadrangular membrane, it is coated with that to scrape described aqueous PU leather bed material concrete with being coated with scraper
Including procedure below: use cuboid stick to push down at described square PVC film leading portion, described painting scraper is placed on described square
Above the graduation mark of PVC film, it is close to graduation mark, below described painting scraper, is close to graduation mark position according to described square PVC film
Width is poured slowly into aqueous PU bed material, both hands lies in painting scraper two ends, along described square PVC film length side after being finished down material
Gently draw described painting scraper to average rate ground, cover all square PVC film.
Preferably, in described step 3) in, described base fabric size is more than the size of described square PVC film, and described base fabric
Warp-wise consistent with the length direction of described square PVC film, its broadwise is consistent with the width of described square PVC film.
Preferably, in described step 3) in, described base fabric is selected from nylon loop, eyelet fabric, looped fabric, stretch fabric and brushed fabric
In one.
Preferably, in described step 3) in, use stainless circular drum to roll around in described base fabric, make described
Base fabric is fitted completely with described square PVC film, and wherein, the length of described circular drum is more than the width of described base fabric.
Preferably, in described step 3) in, the temperature of described drying and processing is 120-140 DEG C, and the time is 3-4min.
4) performance test: by aqueous half PU leather test sample according to testing requirement be cut into width be 3cm, a length of 15-
The strip leather of 18cm, carries out peel strength test；
Peel strength test: strip leather is put into clamping test in tensile testing machine, carries out pull test, span
For along described in peeling direction strip leather 60mm to 150mm along, described pull test machine testing many groups maximum, force and minimum force,
Finally calculate meansigma methods, need two pieces of aqueous half PU leather test samples to test out meansigma methods respectively, according to formula: peel strength
(kg/cm)=two meansigma methods sum (kg)/(2 × 3cm), i.e. can get the peel strength of aqueous PU bed material.
Preferably, in step 4) in, described performance test also includes that weatherability is tested, weatherability test detailed process bag
Include: take strip leather put in climatic chamber, temperature control 65-75 DEG C, relative air humidity control at 80-95%, so
After first week, second week, take out respectively after the 3rd week one group leader's bar shaped leather, then dry, test aging after being cooled to room temperature
The peel strength of strip leather behind one week, two weeks and three weeks, and the peel strength initial with described aqueous PU bed material compare,
Draw peel strength rate of descent, and then can determine that the weatherability that aqueous half PU removes from office.
Preferably, in described step 4) pull test in, described pull test motor speed is set as 200mm/min.
In sum, the present invention provides the detection method of the adhesive property of a kind of half P U leather bed material, the useful effect of the present invention
Really:
In the present invention, detection method imitates actual process hides scene, can judge the viscous of aqueous half PU bed material effectively and rapidly
Connect performance, simple to operation, it is not necessary to complicated equipment；The adhesive property of half PU leather bed material can be quickly determined, in time
Feed back whether tested half PU leather bed material can be applied in the production process of half PU leather, beneficially stablizing between improving product batch
Property；Improve the product quality of half PU leather, it is ensured that stablizing of product quality, indirectly reduce total production cost simultaneously.
Detailed description of the invention
The present invention is expanded on further below in conjunction with embodiment.Should be understood that embodiment is merely to illustrate the present invention, and unrestricted
The scope of the present invention.
The detection of the adhesive property of the aqueous half PU bed material of embodiment 1 model KTC822
(1) aqueous PU slurry:
Take the aqueous half PU bed material of model KTC822, adjust viscosity as requested, viscosity is controlled at 20000-
28000mPa·s。
(2) PVC film is prepared:
Preparation PVC paste: first add 30g dioctyl phthalate (DOP) in stirring container, be then sequentially added into 50g
Corvic (P450), 20g ground calcium carbonate, 7g precipitated calcium carbonate, 1.5g accelerator, 2g stabilizer, high speed dispersion is equal
Even, after deaeration completely, viscosity controls, at 20000-28000mPa.s, to make PVC paste standby.
PVC plastic chemical conversion film: being coated with scraper with the 50S (50S is the concavo-convex gap being coated with scraper, is equivalent to 0.5mm) of long 30cm will
Above-mentioned PVC paste is coated with scrapes on mirror surface paper, puts into baking 50s in 200 DEG C of baking ovens, makes PVC film through high temperature plasticizing, and room temperature cools down
3-5min, tests with Thickness measuring instrument, by PVC film THICKNESS CONTROL at 0.34mm-0.35mm.
(3) half PU leather preparations:
The PVC film made is cut into the square PVC film of length 26cm, width 14cm, at the length direction of square PVC film
At 20cm, picture bar horizontal line marks, and because in on-the-spot actual production flow process, PVC leather width is 1.4m, length 2.0m, laboratory is examined
Survey and be proportionally contracted to 14cm and 20cm, the 6cm subsequent operation for convenience that square PVC film length direction is reserved.
A sheet of planar three-ply board 20 × 30cm put into by electronic scale (precision 0.01 gram), put into above-mentioned cut out square
PVC film peeling is weighed.The purpose weighed is to calculate coating weight, and whether detection coating weight is in the range of normal coating weight, normally
Glue-spread is at 100-110g/m2, conversion grammes per square metre is between 2.0-2.2g.If coating weight is not in the range of normal coating weight,
Need again to be coated with.
On level, clean operating board, use length 40cm, width 5cm, the rustless steel cuboid stick pressure of high 3cm
Live at square PVC film leading portion 2-3cm.The 20cm that the 45s of 30cm is coated with the square PVC film labelling that scraper is placed on 14 × 20cm carves
Above degree line, it is close to graduation mark.It is coated with below scraper at 45s, is close to graduation mark position slow according to square PVC film width (14cm)
Pour aqueous PU bed material into, after being finished down material, both hands are lain in painting scraper two ends, gently draw along square PVC film length direction average rate ground
Being coated with scraper, can not there be pause centre, it is necessary to covers all square PVC film, and many clouts can be packed up with painting scraper.
The PVC film that painting was scraped slurry puts into the weighing calculating (for keeping flat PVC film, remove the peel before title) on electronic scale flat board
Coating weight, if not in the range of normal coating, need to again preparing PVC film, then scratch aqueous PU leather bed material, normal coating weight is
105-110g/m2, according to customer requirement, coating weight can by be coated with scraper concavo-convex gap (such as 10S, 15S, 20S ... 35S,
40S, 50S, 55S) increase and decrease regulate, coating table top and be coated with scraper, PVC film surface, electronic scale upper flat plate must keep neatly,
Foreign.
The PVC film that above-mentioned painting was scraped slurry puts into clean operating table surface, selects base fabric as requested, along base fabric
Through broadwise, being fitted in gently in square PVC film, the size of base fabric is prepared according to warp-wise 17cm, broadwise 30cm in advance, then uses
The self-control rustless steel circular drum of length 50cm, rolls around twice, makes base fabric fit completely with square PVC film.If slurry
Viscosity can roll greatly more one back and forth, mainly make slurry be more easy to penetrate in cloth；When using eyelet fabric or looped fabric laminating, if base
The hole of cloth is relatively big, is easily generated and oozes cloth phenomenon, can suitably reduce the rolling number of times of cylinder.
Slowly move to remove from office bottom sample from leather sample front end with a sheet of planar three-ply board 20 × 30cm, in order to support whole leather sample,
Leather sample is put into 130 DEG C of baking ovens again, dries 3-4min, dry through high temperature, make water paste fully square PVC film be bondd with cloth
Together, it is cooled to room temperature and i.e. can be made into aqueous half PU and remove from office test sample, put under standard environment (temperature (23 ± 2) DEG C, relatively
Air humidity (50 ± 10) %), time 24h) regulation test again.
(4) performance test
Peel strength test: by aqueous half PU leather test sample according to testing requirement be cut into width be 3cm, length 18cm
Strip is removed from office, and puts into clamping test in tensile testing machine, carries out pull test with the speed of 200mm/min, and span is edge
In the range of the 60-150mm of peeling direction strip leather, tension tester tests out the numerical value of many group maximum, force and minimum force,
Automatically calculating meansigma methods, a kind of aqueous half PU bed material need to make 2 piece of half PU leather test sample and test data respectively, then is averaged
Value, i.e. can get the original peel strength of this aqueous PU bed material.
Constant temperature and humidity weatherability is tested: constant temperature and humidity is tested 3 weeks, two aqueous half PU are removed from office test samples press 3cm ×
20cm is cut into three strips leather respectively, and the rectangle leather that same aqueous half PU leather test sample is cut into is one group, and altogether two
Two group leader's bar shaped leather are all put into climatic chamber (75 DEG C, 90%RH) by group, respectively take out a strip after one week from two groups
Leather is put into and is dried 10min in 100 DEG C of baking ovens, tests peel strength after being cooled to room temperature according to the method described above, strong with original stripping
Degree contrast, can draw peel strength rate of descent；After two weeks, after three weeks, from two groups, one strip leather of each taking-up is surveyed the most respectively
Examination peel strength, with original peel strength contrast aqueous PU bed material constant temperature and humidity 2 weeks, after 3 weeks under peel strength
Fall rate, and then can determine that the weatherability that aqueous half PU removes from office.
The test result of the aqueous half PU leather test sample that embodiment 1 obtains is as shown in table 1.Implement as can be seen from Table 1
The original peel strength of the aqueous half PU leather test sample that example 1 obtains is 30.5N/3cm, the stripping of the aqueous half PU leather after first week
From intensity decline 11% compared with original peel strength, after two weeks, the peel strength of aqueous half PU leather is compared with original peel strength
Decline 15%, peel strength decline 28% compared with original peel strength of aqueous half PU leather after three weeks.
The test result of the aqueous half PU leather test sample that table 1 embodiment 1 obtains
If aqueous half PU leather constant temperature and humidity 4 weeks, performance after 5 weeks need to be tested further, also it is according to above-mentioned method of testing,
But the size testing the aqueous half PU leather test sample of 4 weeks is at least 20 × 20cm, and aqueous half PU tested 5 weeks removes from office test specimens
The size of product is at least 25 × 20cm.
The detection of the adhesive property of the aqueous half PU bed material of embodiment 2 model KTC833
(1) aqueous PU slurry:
Take the aqueous half PU bed material of model KTC833, adjust viscosity as requested, viscosity is controlled at 12000-
14000mPa·s。
(2) PVC film is prepared:
Preparation PVC paste: first add 30g dioctyl phthalate (DOP) in stirring container, be then sequentially added into 50g
Corvic (P450), 20g ground calcium carbonate, 7g precipitated calcium carbonate, 1.5g accelerator, 2g stabilizer, high speed dispersion is equal
Even, after deaeration completely, viscosity controls, at 8000-20000mPa.s, to make PVC paste standby.
PVC plastic chemical conversion film: be coated with scraper with the 50S of long 30cm and above-mentioned PVC paste painting is scraped on plain weave paper, put into 200 DEG C
Baking oven dries 50s, makes PVC film, room temperature cooling 3-5min through high temperature plasticizing, test with Thickness measuring instrument, by PVC film thickness
Control at 0.34mm-0.35mm.
(3) half PU leather preparations:
The PVC film made is cut into the square PVC film of length 28cm, width 14cm, at the length direction of square PVC film
At 20cm, picture bar horizontal line marks, and because in on-the-spot actual production flow process, PVC leather width is 1.4m, length 2.0m, laboratory is examined
Survey and be proportionally contracted to 14cm and 20cm, the 8cm subsequent operation for convenience that square PVC film length direction is reserved.
Electronic scale is put into a sheet of planar three-ply board 20 × 30cm, puts into the peeling of the above-mentioned square PVC film cut out and weigh.
The purpose weighed is to calculate coating weight, and whether detection coating weight is in the range of normal coating weight, and normal glue-spread is at 100-
110g/m2, conversion grammes per square metre is between 2.0-2.2g.If coating weight is not in the range of normal coating weight, need again to be coated with.
On level, clean operating board, use length 40cm, width 5cm, the rustless steel cuboid stick pressure of high 3cm
Live at square PVC film leading portion 2-3cm.The 20cm that the 45s of 30cm is coated with the square PVC film labelling that scraper is placed on 14 × 20cm carves
Above degree line, it is close to graduation mark.It is coated with below scraper at 45s, is close to graduation mark position and is poured slowly into water according to square PVC film width
Property PU bed material, after being finished down material, both hands are lain in painting scraper two ends, along square PVC film length direction average rate ground gently draw painting to scrape
Rod, can not there be pause centre, it is necessary to covers all square PVC film, and many clouts can be packed up with painting scraper.
The PVC film that painting was scraped slurry puts into weighing on electronic scale flat board, it is judged that whether the coating weight of aqueous half PU bed material
In normal coating weight, normal coating weight is 105-110g/m2。
The square PVC film that painting was scraped slurry puts into clean operating table surface, selects base fabric as requested, along base fabric
Through broadwise, being fitted in gently in square PVC film, the size of base fabric is prepared according to warp-wise 17cm, broadwise 30cm in advance, then uses
The self-control rustless steel circular drum of length 50cm, rolls around once, makes base fabric fit completely with square PVC film.
Slowly move to remove from office bottom sample from leather sample front end with a sheet of planar three-ply board 20 × 30cm, in order to support whole leather sample,
Leather sample is put into 130 DEG C of baking ovens again, dries 3-4min, dry through high temperature, make water paste fully square PVC film be glued with base fabric
It is connected together, is cooled to room temperature and i.e. can be made into aqueous half PU leather test sample, put into (temperature (23 ± 2) DEG C, phase under standard environment
To air humidity (50 ± 10) %), time 24h) regulation test again.
(4) performance test
Peel strength test: according to testing requirement, aqueous half PU leather test sample is cut into width is 3cm, length 15-
The strip leather of 18cm, puts into clamping test in tensile testing machine, carries out pull test, value model with the speed of 200mm/min
In the range of enclosing the 60-150mm for removing from office along peeling direction strip, tension tester tests out many group maximum, force and minimum force
Numerical value, calculates meansigma methods automatically, and a kind of aqueous half PU bed material need to make 2 pieces of leather samples and test respectively, then averages,
Obtain the original peel strength of this aqueous PU bed material.
Constant temperature and humidity weatherability is tested: constant temperature and humidity is tested 3 weeks, two aqueous half PU are removed from office test samples press 3cm ×
20cm is cut into three strips leather respectively, and the rectangle leather that same aqueous half PU leather test sample is cut into is one group, and altogether two
Two group leader's bar shaped leather are all put into climatic chamber (75 DEG C, 90%RH) by group, respectively take out a strip after one week from two groups
Leather is put into and is dried 10min in 100 DEG C of baking ovens, tests peel strength after being cooled to room temperature according to the method described above, strong with original stripping
Degree contrast, can draw peel strength rate of descent；After two weeks, after three weeks, from two groups, one strip leather of each taking-up is surveyed the most respectively
Examination peel strength, with original peel strength contrast aqueous PU bed material constant temperature and humidity 2 weeks, after 3 weeks under peel strength
Fall rate, and then can determine that the weatherability that aqueous half PU removes from office.
The test result of the aqueous half PU leather test sample that embodiment 2 obtains is as shown in table 2.Implement as can be seen from Table 2
The original peel strength of the aqueous half PU leather test sample that example 2 obtains is 24.5N/3cm, the stripping of the aqueous half PU leather after first week
From intensity decline 7% compared with original peel strength, after two weeks, the peel strength of aqueous half PU leather is compared with original peel strength
Decline 12%, peel strength decline 18% compared with original peel strength of aqueous half PU leather after three weeks.
The test result of the aqueous half PU leather test sample that table 2 embodiment 2 obtains
If aqueous half PU leather constant temperature and humidity 4 weeks, performance after 5 weeks need to be tested further, also it is according to above-mentioned method of testing,
But the size testing the aqueous half PU leather test sample of 4 weeks is at least 20 × 20cm, and aqueous half PU tested 5 weeks removes from office test specimens
The size of product is at least 25 × 20cm.
The detection of the adhesive property of the aqueous half PU bed material of embodiment 3 model KTC828
(1) aqueous PU slurry:
Take the aqueous half PU bed material of model KTC828, adjust viscosity as requested, viscosity is controlled at 32000-
36000mPa·s。
(2) PVC film is prepared:
Preparation PVC paste: first add 30g dioctyl phthalate (DOP) in stirring container, be then sequentially added into 50g
Corvic (P450), 20g ground calcium carbonate, 7g precipitated calcium carbonate, 1.5g accelerator, 2g stabilizer, high speed dispersion is equal
Even, after deaeration completely, viscosity controls, at 8000-20000mPa.s, to make PVC paste standby.
PVC plastic chemical conversion film: being coated with scraper with the 50S (50S is the concavo-convex gap being coated with scraper, is equivalent to 0.5mm) of long 30cm will
Above-mentioned PVC paste is coated with and scrapes on plain weave paper, puts into baking 50s in 200 DEG C of baking ovens, makes PVC film through high temperature plasticizing, and room temperature cools down
3-5min, tests with Thickness measuring instrument, by PVC film THICKNESS CONTROL at 0.34mm-0.35mm.
(3) half PU leather preparations:
The PVC film made is cut into the square PVC film of length 27cm, width 14cm, at the length direction of square PVC film
At 20cm, picture bar horizontal line marks, and because in on-the-spot actual production flow process, PVC leather width is 1.4m, length 2.0m, laboratory is examined
Survey and be proportionally contracted to 14cm and 20cm, the 7cm subsequent operation for convenience that square PVC film length direction is reserved.
Electronic scale is put into a sheet of planar three-ply board 20 × 30cm, puts into the peeling of the above-mentioned square PVC film cut out and weigh.
The purpose weighed is to calculate coating weight, and whether detection coating weight is in the range of normal coating weight, and normal glue-spread is at 100-
110g/m2, conversion grammes per square metre is between 2.0-2.2g.If coating weight is not in the range of normal coating weight, need again to be coated with.
On level, clean operating board, use length 40cm, width 5cm, the rustless steel cuboid stick pressure of high 3cm
Live at square PVC film leading portion 2-3cm.The 20cm that the 45s of 30cm is coated with the square PVC film labelling that scraper is placed on 14 × 20cm carves
Above degree line, it is close to graduation mark.It is coated with below scraper at 45s, is close to graduation mark position slow according to square PVC film width (14cm)
Pour aqueous PU bed material into, after being finished down material, both hands are lain in painting scraper two ends, gently draw along square PVC film length direction average rate ground
Being coated with scraper, can not there be pause centre, it is necessary to covers all PVC film, and many clouts can be packed up with painting scraper.
The square PVC film that painting was scraped slurry puts into weighing calculating coating weight on electronic scale flat board, it is judged that whether coating weight
In normal coat weight ranges, normal coating weight is 105-110g/m2。
The square PVC film that painting was scraped slurry puts into clean operating table surface, selects base fabric as requested, along base fabric
Through broadwise, being fitted in gently in square PVC film, the size of base fabric is prepared according to warp-wise 17cm, broadwise 30cm, then uses length
The self-control rustless steel circular drum of 50cm, rolls around three times, makes base fabric fit completely with square PVC film.
Slowly move to remove from office bottom sample from leather sample front end with a sheet of planar three-ply board 20 × 30cm, in order to support whole leather sample,
Leather sample is put into 130 DEG C of baking ovens again, dries 3-4min, dry through high temperature, make water paste fully PVC film and cloth are bonded in one
Rise, be cooled to room temperature and i.e. can be made into aqueous half PU leather test sample, put into (temperature (23 ± 2) DEG C, relative atmospheric under standard environment
Humidity (50 ± 10) %), time 24h) regulation test again.
(4) performance test
Peel strength test: according to testing requirement, aqueous half PU leather test sample is cut into width is 3cm, length 15-
The strip of 18cm, puts into clamping test in tensile testing machine, carries out pull test, span with the speed of 200mm/min
For in the range of the 60-150mm that removes from office along peeling direction strip, tension tester tests out the number of many group maximum, force and minimum force
Value, calculates meansigma methods automatically, and a kind of aqueous half PU bed material at least needs to make 2 pieces of leather samples and tests respectively, then averages, i.e.
The original peel strength of this aqueous PU bed material available.
Constant temperature and humidity weatherability is tested: constant temperature and humidity is tested 3 weeks, two aqueous half PU are removed from office test samples press 3cm ×
20cm is cut into three strips leather respectively, and the rectangle leather that same aqueous half PU leather test sample is cut into is one group, and altogether two
Two group leader's bar shaped leather are all put into climatic chamber (75 DEG C, 90%RH) by group, respectively take out a strip after one week from two groups
Leather is put into and is dried 10min in 100 DEG C of baking ovens, tests peel strength after being cooled to room temperature according to the method described above, strong with original stripping
Degree contrast, can draw peel strength rate of descent；After two weeks, after three weeks, from two groups, one strip leather of each taking-up is surveyed the most respectively
Examination peel strength, with original peel strength contrast aqueous PU bed material constant temperature and humidity 2 weeks, after 3 weeks under peel strength
Fall rate, and then can determine that the weatherability that aqueous half PU removes from office.
The test result of the aqueous half PU leather test sample that embodiment 3 obtains is as shown in table 3.Implement as can be seen from Table 3
The original peel strength of the aqueous half PU leather test sample that example 3 obtains is 20.5N/3cm, the stripping of the aqueous half PU leather after first week
From intensity decline 15% compared with original peel strength, after two weeks, the peel strength of aqueous half PU leather is compared with original peel strength
Decline 22%, peel strength decline 34% compared with original peel strength of aqueous half PU leather after three weeks.
The test result of the aqueous half PU leather test sample that table 3 embodiment 3 obtains
If aqueous half PU leather constant temperature and humidity 4 weeks, performance after 5 weeks need to be tested further, also it is according to above-mentioned method of testing,
But the size testing the aqueous half PU leather test sample of 4 weeks is at least 20 × 20cm, and aqueous half PU tested 5 weeks removes from office test specimens
The size of product is at least 25 × 20cm.
The detection of the adhesive property of embodiment 4 model KTC716 aqueous half PU bed material
(1) aqueous PU slurry:
Take the aqueous half PU bed material of model KTC716, adjust viscosity as requested, viscosity is controlled 8000
10000mPa·s。
(2) PVC film is prepared:
Preparation PVC paste: first add 30g dioctyl phthalate (DOP) in stirring container, be then sequentially added into 50g
Corvic (P450), 20g ground calcium carbonate, 7g precipitated calcium carbonate, 1.5g accelerator, 2g stabilizer, high speed dispersion is equal
Even, after deaeration completely, viscosity controls, at 8000-20000mPa.s, to make PVC paste standby.
PVC plastic chemical conversion film: being coated with scraper with the 50S (50S is the concavo-convex gap being coated with scraper, is equivalent to 0.5mm) of long 30cm will
Above-mentioned PVC paste is coated with and scrapes on plain weave paper, puts into baking 50s in 180 DEG C of baking ovens, makes PVC film through high temperature plasticizing, and room temperature cools down
3-5min, tests with Thickness measuring instrument, by PVC film THICKNESS CONTROL at 0.34mm-0.35mm.
(3) half PU leather preparations:
The PVC film made is cut into the square PVC film of length 26cm, width 14cm, at the length direction of square PVC film
At 20cm, picture bar horizontal line marks, and because in on-the-spot actual production flow process, PVC leather width is 1.4m, length 2.0m, laboratory is examined
Survey and be proportionally contracted to 14cm and 20cm, the 6cm subsequent operation for convenience that square PVC film length direction is reserved.
Electronic scale is put into a sheet of planar three-ply board 20 × 30cm, puts into the peeling of the above-mentioned square PVC film cut out and weigh.
The purpose weighed is to calculate coating weight, and whether detection coating weight is in the range of normal coating weight, and normal glue-spread is at 100-
110g/m2, conversion grammes per square metre is between 2.0-2.2g.If coating weight is not in the range of normal coating weight, need again to be coated with.
On level, clean operating board, use length 45cm, width 5cm, the rustless steel cuboid stick pressure of high 3cm
Live at square PVC film leading portion 2-3cm.The 20cm that the 45s of 30cm is coated with the square PVC film labelling that scraper is placed on 14 × 20cm carves
Above degree line, it is close to graduation mark.It is coated with below scraper at 45s, is close to graduation mark position and is poured slowly into water according to square PVC film width
Property half PU remove from office bed material, after being finished down material, both hands are lain in painting scraper two ends, along square PVC film length direction average rate ground gently draw painting
Scraper, can not there be pause centre, it is necessary to covers all square PVC film, and many clouts can be packed up with painting scraper.
The square PVC film that painting was scraped slurry puts into weighing on electronic scale flat board, it is judged that the coating weight of aqueous half PU bed material
Whether in normal coating weight, normal coating weight is 105-110g/m2。
The square PVC film that painting was scraped slurry puts into clean operating table surface, selects base fabric along base fabric as requested
Through broadwise, being fitted in gently in PVC film, the size of base fabric is prepared according to warp-wise 17cm, broadwise 30cm in advance, then uses length
The self-control rustless steel circular drum of 50cm, rolls around once, makes base fabric fit completely with square PVC film.
Slowly move to remove from office bottom sample from leather sample front end with a sheet of planar three-ply board 20 × 30cm, in order to support whole leather sample,
Leather sample is put into 130 DEG C of baking ovens again, dries 3-4min, dry through high temperature, make water paste fully PVC film and cloth are bonded in one
Rise, be cooled to room temperature and i.e. can be made into aqueous half PU leather test sample, put into (temperature (23 ± 2) DEG C, relative atmospheric under standard environment
Humidity (50 ± 10) %), time 24h) regulation test again.
(4) performance test
Peel strength test: according to testing requirement, aqueous half PU leather test sample is cut into width is 3cm, length 15-
The strip of 18cm, puts into clamping test in tensile testing machine, carries out pull test, span with the speed of 200mm/min
For in the range of the 60-150mm that removes from office along peeling direction strip, tension tester tests out the number of many group maximum, force and minimum force
Value, calculates meansigma methods automatically, and aqueous half PU bed material need to make 2 pieces of leather samples and test respectively, then averages, and i.e. can get this
The original peel strength of aqueous PU bed material.
Constant temperature and humidity weatherability is tested: constant temperature and humidity is tested 3 weeks, two aqueous half PU are removed from office test samples press 3cm ×
20cm is cut into three strips leather respectively, and the rectangle leather that same aqueous half PU leather test sample is cut into is one group, and altogether two
Two group leader's bar shaped leather are all put into climatic chamber (75 DEG C, 90%RH) by group, respectively take out a strip after one week from two groups
Leather is put into and is dried 10min in 100 DEG C of baking ovens, tests peel strength after being cooled to room temperature according to the method described above, strong with original stripping
Degree contrast, can draw peel strength rate of descent；After two weeks, after three weeks, from two groups, one strip leather of each taking-up is surveyed the most respectively
Examination peel strength, with original peel strength contrast aqueous PU bed material constant temperature and humidity 2 weeks, after 3 weeks under peel strength
Fall rate, and then can determine that the weatherability that aqueous half PU removes from office.
The test result of the aqueous half PU leather test sample that embodiment 4 obtains is as shown in table 4, implements as can be seen from Table 4
The original peel strength of the aqueous half PU leather test sample that example 4 obtains is 34N/3cm, the stripping of the aqueous half PU leather after first week
Intensity is decline 4% compared with original peel strength, under after two weeks, the peel strength of aqueous half PU leather is compared with original peel strength
Fall 22%, peel strength decline 27% compared with original peel strength of aqueous half PU leather after three weeks.
The test result of the aqueous half PU leather test sample that table 4 embodiment 4 obtains
If aqueous half PU leather constant temperature and humidity 4 weeks, performance after 5 weeks need to be tested further, also it is according to above-mentioned method of testing,
But the size testing the aqueous half PU leather test sample of 4 weeks is at least 20 × 20cm, and aqueous half PU tested 5 weeks removes from office test specimens
The size of product is at least 25 × 20cm.
To sum up, in the present invention, detection method imitates actual process hides scene, can judge aqueous half PU bed material effectively and rapidly
Adhesive property, simple to operation, it is not necessary to complicated parts；The adhesive property of half PU leather bed material can be quickly determined,
Whether the tested half PU leather bed material of feedback can be applied in the production process of half PU leather, beneficially between improving product batch in time
Stability；Improve the product quality of half PU leather, it is ensured that stablizing of product quality, indirectly reduce total production cost simultaneously.Institute
With, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The above, only presently preferred embodiments of the present invention, not any formal and substantial to present invention restriction,
It should be pointed out that, for those skilled in the art, on the premise of without departing from the inventive method, also can make
Some improvement and supplement, these improve and supplement also should be regarded as protection scope of the present invention.All those skilled in the art,
Without departing from the spirit and scope of the present invention, make when available disclosed above technology contents a little more
The equivalent variations moved, modify and develop, is the Equivalent embodiments of the present invention；Meanwhile, all substantial technological pair according to the present invention
The change of any equivalent variations that above-described embodiment is made, modify and develop, all still fall within the scope of technical scheme
In.
Claims (10)
1. the detection method of the adhesive property of one and half PU leather bed materials, it is characterised in that: comprise the following steps:
1) modulation aqueous PU leather bed material；
2) PVC film is prepared: first prepare PVC paste, then described PVC paste is prepared as PVC film；
3) aqueous half PU leather preparation:
The PVC film made is cut into multiple square PVC film, and calculating coating weight of weighing described square PVC film, coating weight
Must be in the range of normal coating weight, normal coating weight is 100-110g/m2；
It is coated with in described square PVC film with painting scraper and scrapes described aqueous PU leather bed material, then weigh at the bottom of the described aqueous PU leather of calculating
The coating weight of material, the coating weight of described aqueous PU leather bed material must be in the range of normal coating weight, and normal coating weight is 100-
110g/m2；
By base fabric along through broadwise, it is fitted in the square PVC film being coated with after scraping described aqueous PU leather bed material, treats described base fabric and institute
Stating after square PVC film fits completely, drying and processing, room temperature cools down, and prepares aqueous half PU and removes from office test sample；
4) performance test: by aqueous half PU leather test sample according to testing requirement be cut into width be 3cm, a length of 15-18cm
Strip is removed from office, and carries out peel strength test；
Peel strength test: strip leather being put into clamping test in tensile testing machine, carries out pull test, span is edge
In the 60mm to 150mm of strip leather described in peeling direction, described pull test machine testing many groups maximum, force and minimum force, finally
Calculate meansigma methods, need two pieces of aqueous half PU leather test samples to test out meansigma methods respectively, according to formula: peel strength (kg/
Cm)=two meansigma methods sum (kg)/(2 × 3cm), i.e. can get the peel strength of aqueous PU bed material.
The detection method of the adhesive property of half PU leather bed material the most as claimed in claim 1, it is characterised in that: in step 4) in,
Performance test also includes that weatherability is tested, and detailed process includes: taking strip leather and put in climatic chamber, temperature controls
65-75 DEG C, relative air humidity control at 80-95%, then first week, second week, after the 3rd week, take out a group leader respectively
Bar shaped is removed from office, and dries, and is cooled to after room temperature to test one week of aging, two weeks and peel strength that after three weeks, strip is removed from office, and with described
The original peel strength of aqueous PU bed material compares, and draws peel strength rate of descent, and then judges the weather-proof of aqueous half PU leather
Property.
The detection method of the adhesive property of half PU leather bed material the most as claimed in claim 1, it is characterised in that: in described step 2)
In, the process that described PVC paste plastifies into PVC film is specifically included:
Use painting scraper described PVC paste to be coated with and scrape on mirror surface paper, put into high temperature plasticizing 45-60s in 180-200 DEG C of baking oven, often
Temperature cooling 3-5min, it is thus achieved that PVC film；Test with Thickness measuring instrument, by described PVC film THICKNESS CONTROL at 0.34mm-0.35mm.
The detection method of the adhesive property of half PU leather bed material the most as claimed in claim 1, it is characterised in that: described quadrangular membrane
A length of 25-28cm, width is 14cm, and at described square PVC film length direction 20cm, picture horizontal line is to make graduation mark.
The detection method of the adhesive property of half PU leather bed material the most as claimed in claim 4, it is characterised in that: in described step 3)
In, it is coated with on described quadrangular membrane and scrapes described aqueous PU leather bed material with being coated with scraper and specifically include procedure below:
Use cuboid stick to push down at described square PVC film leading portion, described painting scraper is placed on the quarter of described square PVC film
Above degree line, it is close to graduation mark, below described painting scraper, is close to graduation mark position slow according to described square PVC film width
Pour aqueous PU bed material into, after being finished down material, both hands are lain in painting scraper two ends, along described square PVC film length direction average rate ground
Gently draw described painting scraper, square PVC film is completely covered.
The detection method of the adhesive property of half PU leather bed material the most as claimed in claim 1, it is characterised in that: in described step 3)
In, described base fabric size is more than the size of described square PVC film, and the length of the warp-wise of described base fabric and described square PVC film
Direction is consistent, and its broadwise is consistent with the width of described square PVC film.
The detection method of the adhesive property of half PU leather bed material the most as claimed in claim 1, it is characterised in that: in described step 3)
In, described base fabric one in nylon loop, eyelet fabric, looped fabric, stretch fabric and brushed fabric.
The detection method of the adhesive property of half PU leather bed material the most as claimed in claim 1, it is characterised in that: in described step 3)
In, use stainless circular drum to roll twice in described base fabric, make described base fabric paste completely with described square PVC film
Closing, wherein, the length of described circular drum is more than the width of described base fabric.
The detection method of the adhesive property of half PU leather bed material the most as claimed in claim 1, it is characterised in that: in described step 3)
In, the temperature of described drying and processing is 120-140 DEG C, and the time is 3-4min.
The detection method of the adhesive property of half PU leather bed material the most as claimed in claim 1, it is characterised in that: in described step
4), in pull test, described pull test motor speed is set as 200mm/min.
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