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Nano pulp for producing nano synthetic leather base by wet method and wet method process thereof

A nano-slurry and synthetic leather technology, which is applied in fiber processing, textiles and papermaking, etc., can solve the problems of changing the production process and production line, and the problem of nano-particle agglomeration cannot be fundamentally solved, so as to achieve good nano-characteristics, solve the problem of easy agglomeration, The effect of excellent air permeability and moisture permeability

Inactive Publication Date: 2009-04-15
WENZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the research of nano-synthetic leather, the method of adding nano-powder is mostly adopted. The problem of nano-particle agglomeration cannot be fundamentally solved, and it will inevitably change the existing production process and production line. unacceptable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. The formula and preparation method of nano slurry are as follows:

[0031] Ingredient Weight (parts)

[0032] Polyurethane resin (taking 30% solid content as an example) 100

[0033] Orthoethyl silicate 1.0

[0034] Diethanolamine 0.2

[0035] Calcium carbonate 20

[0036] Leveling agent 0.1

[0037] Butanone 50

[0038] Dimethylformamide 50

[0039] toner 3

[0040] Put the tetraethyl orthosilicate and diethanolamine measured in the above raw materials into a sealed, dry container with stirring for 20 minutes at room temperature. Then add measured polyurethane resin, calcium carbonate, leveling agent, butanone, dimethylformamide and toner and continue to stir for 30 minutes, and finally defoam under negative pressure for later use.

[0041] 2. The wet process of nano-synthetic leather bass is as follows:

[0042] The process method is a wet method, and the coating process is as follows: evenly coat the prepared nano-slurry on the pre-impregnated base cloth ...

Embodiment 2

[0045] 1. The formula and preparation method of nano slurry are as follows:

[0046] Ingredient Weight (parts)

[0047] Polyurethane resin (take solid content 30% as an example) 200

[0048] Orthobutyl silicate 3.0

[0049] Triethanolamine 2.8

[0050] Lignocellulose 50

[0051] Leveling agent 0.3

[0052] Dimethylformamide 200

[0053] Toner 8.0

[0054] Put the butyl orthosilicate and triethanolamine measured in the above raw materials into a sealed, dry container with stirring for 20 minutes at room temperature. Then add the measured polyurethane resin, lignocellulose, leveling agent, dimethylformamide and toner and continue to stir for 30 minutes, and finally defoam under negative pressure for later use.

[0055] 2. The wet process of nano-synthetic leather bass is as follows:

[0056] The process method is a wet method, and the coating process is as follows: evenly coat the prepared nano-slurry on the pre-impregnated base cloth - solidify - wash - dry - roll.

[...

Embodiment 3

[0059] 1. The formula and preparation method of nano slurry are as follows:

[0060] Ingredient Weight (parts)

[0061] Polyurethane resin (take solid content 30% as an example) 250

[0062] Tetraethyl titanate 6.0

[0063] Acetylacetone 7.9

[0064] Silica 62.5

[0065] Leveling agent 0.4

[0066] Dimethylformamide 375

[0067] Toner 10

[0068] First put tetraethyl titanate and acetylacetone measured in the above raw materials into a sealed, dry container with stirring and react at room temperature for 20 minutes. Then add the measured polyurethane resin, silicon dioxide, leveling agent, dimethylformamide and toner and continue to stir for 30 minutes, and finally defoam under negative pressure for later use.

[0069] 2. The wet process of nano-synthetic leather bass is as follows:

[0070] The process method is a wet method, and the coating process is as follows: evenly coat the prepared nano-slurry on the pre-impregnated base cloth—solidify—wash—dry—roll.

[0071] Na...

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Abstract

The invention relates to a nano sizing agent used for producing nano synthetic leather Bayes by adopting a wet method, and the wet processing thereof; the nano sizing agent is formed by the following components (part by weight): 100 to 300 parts by weight of polyurethane resin (the solid content of 30 percent is taken as an example), 1.0 to 9.0 parts by weight of nano precursor, 0.2 to 10.0 parts by weight of inhibitor, 20 to 90 parts by weight of filling material, 0.1 to 0.6 part by weight of leveling agent, and 100 to 600 parts by weight of thinner. The wet processing is: coating-solidification-water washing-drying-coiling. On the premise of not changing the current wet production technology and equipment of the synthetic leather industry, the invention adopts special in situ hybridization technique to uniformly lead nanoscale inorganic grains into a polyurethane coating, thus improving the performances of air permeability and moisture permeability, bacteriostasis and fungus resistance, ultraviolet resistance and the like of the synthetic leather Bayes.

Description

technical field [0001] The invention relates to a technique in the field of synthetic leather production, in particular to a nano-slurry for wet production of nano-synthetic leather bases and a wet process thereof. Background technique [0002] With the continuous improvement of living standards, people have put forward higher requirements on the performance of clothing and footwear. The film-forming material of polyurethane (PU) synthetic leather is polyurethane resin. The coating formed by this type of polymer naturally has the defect of poor permeability, which will greatly hinder the transmission of water vapor and heat, and reduce the wearing comfort of synthetic leather. Sexual and hygienic performance. At the same time, polyurethane synthetic leather is also very easy to be corroded by microorganisms (bacteria and mold) during wearing. The reason is that the polyester components and various additives (plasticizers, heat stabilizers, light stabilizers, fillers, lubri...

Claims

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Application Information

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IPC IPC(8): D06M15/564D06M11/79D06M11/46D06N3/14
Inventor 范浩军陈意刘若望代道胜袁继新
Owner WENZHOU UNIVERSITY
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