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Detection method of adhesive property of semi-PU leather bottom material

A technology of bonding performance and detection method, which is applied in measuring devices, analytical materials, instruments, etc., can solve the problems of inaccurate performance testing of water-based PU leather base materials, complicated performance testing, and separation from semi-PU leather, and achieves simple and convenient operation. , The effect of improving product quality and reducing total production cost

Inactive Publication Date: 2017-01-04
HEFEI KETIAN WATERBORNE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water-based PU leather base material is applied between the PVC foam layer and the base fabric to play a bonding role. Its adhesive performance will directly affect the product quality of the final water-based semi-PU leather. Generally, it needs to be carried out during the technology research and development and production process. Performance testing, at present, the performance testing in the prior art is generally more complicated, and even departs from the actual process of preparing semi-PU leather, resulting in inaccurate performance testing of water-based PU leather base materials

Method used

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  • Detection method of adhesive property of semi-PU leather bottom material
  • Detection method of adhesive property of semi-PU leather bottom material
  • Detection method of adhesive property of semi-PU leather bottom material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1 Test of the bonding performance of the water-based semi-PU primer of model KTC822

[0033] (1) Water-based PU slurry:

[0034] Take the water-based semi-PU base material of model KTC822, adjust the viscosity according to the requirements, and control the viscosity at 20000-28000mPa·s.

[0035] (2) Preparation of PVC film:

[0036] To prepare PVC paste: first add 30g of dioctyl phthalate (DOP) to a stirred container, and then add 50g of polyvinyl chloride resin (P450), 20g of heavy calcium carbonate, 7g of light calcium carbonate, 1.5g of accelerator , 2g stabilizer, uniform dispersion at high speed, after defoaming is complete, the viscosity is controlled at 20000-28000mPa.s, made into PVC paste for later use.

[0037] PVC plasticized film: use a 30cm long 50S (50S is the uneven gap of the coating scraper, equivalent to 0.5mm) coating scraper to scrape the above-mentioned PVC paste on the mirror paper, put it in a 200℃ oven and bake it for 50s. The PVC film is made by...

Embodiment 2

[0053] Example 2 Detection of the bonding performance of the water-based semi-PU primer of model KTC833

[0054] (1) Water-based PU slurry:

[0055] Take the water-based semi-PU base material of model KTC833, adjust the viscosity according to the requirements, and control the viscosity at 12000-14000mPa·s.

[0056] (2) Preparation of PVC film:

[0057] To prepare PVC paste: first add 30g of dioctyl phthalate (DOP) to a stirred container, and then add 50g of polyvinyl chloride resin (P450), 20g of heavy calcium carbonate, 7g of light calcium carbonate, 1.5g of accelerator , 2g stabilizer, uniform dispersion at high speed, after defoaming is complete, the viscosity is controlled at 8000-20000mPa.s, made into PVC paste for later use.

[0058] PVC plasticized film: use a 30cm long 50S coating scraper to scrape the above-mentioned PVC paste on plain paper, put it in an oven at 200°C for 50s, plasticize at high temperature to form a PVC film, cool at room temperature for 3-5min, use The thi...

Embodiment 3

[0074] Example 3 Detection of the bonding performance of the water-based semi-PU primer of model KTC828

[0075] (1) Water-based PU slurry:

[0076] Take the water-based semi-PU base material of model KTC828, adjust the viscosity according to the requirements, and control the viscosity to 32000-36000mPa·s.

[0077] (2) Preparation of PVC film:

[0078] To prepare PVC paste: first add 30g of dioctyl phthalate (DOP) to a stirred container, and then add 50g of polyvinyl chloride resin (P450), 20g of heavy calcium carbonate, 7g of light calcium carbonate, 1.5g of accelerator , 2g stabilizer, uniform dispersion at high speed, after defoaming is complete, the viscosity is controlled at 8000-20000mPa.s, made into PVC paste for later use.

[0079] PVC plasticized film: use a 30cm long 50S (50S is the uneven gap of the coating scraper, equivalent to 0.5mm) coating scraper to scrape the above-mentioned PVC paste on the plain paper, and put it in an oven at 200℃ for 50s. The PVC film is made by ...

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Abstract

The invention provides a detection method of an adhesive property of a semi-PU leather bottom material. The detection method comprises the following steps: (1) blending a water-borne PU leather bottom material; (2) preparing a PVC film; (3) preparing a water-borne semi-PU leather: cutting the prepared PVC film into a plurality of square PVC films, weighing the square PVC films, and calculating a coating amount; smearing the water-borne PU leather bottom material on the square PVC films by using a scraping stick, weighing and calculating the coating amount of the water-borne PU leather bottom material; adhering a piece of basic cloth to the square PVC film coated with the water-borne PU leather bottom material, and obtaining a water-borne semi-PU leather test sample; and (4) testing properties: cutting the water-borne semi-PU leather test sample into elongated leather with a width of 3cm and length of 15 to 18 cm, and testing the stripping strength. The detection method simulates a real leather production field, can effectively and rapidly determine the adhesive property of the water-borne semi-PU bottom material, and can improve the product quality of the semi-PU leather.

Description

Technical field [0001] The invention relates to the field of detection methods for semi-PU leather base materials, and specifically discloses a detection method for the bonding performance of semi-PU leather base materials. Background technique [0002] The water-based semi-PU leather is made of polyvinyl chloride (PVC) as the foaming layer, water-based polyurethane (PU) base material as the adhesive layer, and base fabric as the bottom layer, which are made by dry coating. The water-based PU leather base material is used between the PVC foam layer and the base cloth to play a bonding role. Its bonding performance will directly affect the product quality of the final water-based semi-PU leather. Generally, it needs to be carried out in the process of technology development and production. Performance testing. At present, performance testing in the prior art is generally more complicated, even out of the actual process of preparing semi-PU leather, resulting in inaccurate performa...

Claims

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Application Information

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IPC IPC(8): G01N19/04
CPCG01N19/04
Inventor 许金凤赵春娥赵曦戴家兵李维虎郭荣军朱有奎
Owner HEFEI KETIAN WATERBORNE TECH CO LTD