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A kind of preparation method of non-odor wet-process polyurethane synthetic leather

A wet-process polyurethane and synthetic leather technology, applied in polyurea/polyurethane coatings, coatings, textiles and papermaking, etc., can solve problems affecting the comfort of use, and achieve the effects of long-lasting effect, enhanced air permeability, and elimination of odors

Active Publication Date: 2018-06-29
安徽省思维新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, polyurethane synthetic leather uses a large amount of organic solvents in the production process. Therefore, polyurethane synthetic leather itself also has a relatively heavy odor, which greatly affects people's comfort in use.

Method used

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  • A kind of preparation method of non-odor wet-process polyurethane synthetic leather
  • A kind of preparation method of non-odor wet-process polyurethane synthetic leather
  • A kind of preparation method of non-odor wet-process polyurethane synthetic leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method of odorless wet-process polyurethane synthetic leather, comprising the steps of:

[0026] (1) Preparation of photocatalytic titanium dioxide microcapsules. Get the titanium dioxide powder 5g of 8nm particle diameter and the rare earth activator YPO of 8nm particle diameter 4 : Ce, Th 10g mixed, then mixed with 90g monomer methyl methacrylate in the container, add 2g emulsifier Tween 80, under the power of 350W ultrasonic, slowly add 600g water, after mixing, stop ultrasonic . Then add 10g of porogen polyethylene glycol 400, 80mg of initiator azobisisobutyronitrile and 10g of crosslinking agent allyl methacrylate, and stir homogeneously at 80°C at 600r / min under the protection of nitrogen. React for 4 hours, finally wash with water, filter with suction, and dry in vacuum to obtain photocatalytic titanium dioxide microcapsules;

[0027] (2) be mixed into thermoplastic polyurethane slurry with the weight proportion of following component;

[0028] ...

Embodiment 2

[0036] A preparation method of odorless wet-process polyurethane synthetic leather, comprising the steps of:

[0037] (1) Preparation of photocatalytic titanium dioxide microcapsules. Get the titanium dioxide powder 5g of 5nm particle diameter and the rare earth activator MgSrBF of 5nm particle diameter 3 : Eu 1g mixed, then mixed with 80g monomer methyl methacrylate in the container, add 2g emulsifier Span 80, under the power of 300W ultrasonic, slowly add 500g water, after mixing, stop ultrasonic. Then add 10g of porogen polyethylene glycol 400, 80mg of initiator azobisisobutyronitrile and 10g of crosslinking agent allyl methacrylate, and stir homogeneously at 45°C under nitrogen protection at 400r / min. React for 0.5h, finally wash with water, filter with suction, and dry in vacuum to obtain photocatalytic titanium dioxide microcapsules;

[0038] (2) be mixed into thermoplastic polyurethane slurry with the weight proportion of following component;

[0039]

[0040] The...

Embodiment 3

[0047] A preparation method of odorless wet-process polyurethane synthetic leather, comprising the steps of:

[0048] (1) Preparation of photocatalytic titanium dioxide microcapsules. Get 10g of titanium dioxide powder with a particle size of 10nm and the rare earth activator MgSrBF with a particle size of 10nm 3 : Eu 20g mixed, then mixed with 100g monomer methyl methacrylate in a container, add 10g emulsifier Span 80, under the power of 400W ultrasonic, slowly add 800g water, after mixing, stop ultrasonic. Then add 30g of porogen polyethylene glycol 400, 100mg of initiator azobisisobutyronitrile and 20g of crosslinking agent allyl methacrylate, and stir homogeneously at 60°C at 500r / min under the protection of nitrogen. React for 2 hours, finally wash with water, filter with suction, and dry in vacuum to obtain photocatalytic titanium dioxide microcapsules;

[0049] (2) be mixed into thermoplastic polyurethane slurry with the weight proportion of following component;

[0...

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Abstract

The invention discloses a preparation method of wet polyurethane synthetic leather without peculiar smell. The novel wet polyurethane synthetic leather without peculiar smell is formed by two layers and comprises a base cloth. The preparation method comprises the following steps: mixing nano titanium dioxide powder with a rare earth activator to prepare microcapsules, adding the microcapsules to thermoplastic polyurethane slurry, simultaneously putting in a pore-foaming agent and coating the base cloth with thermoplastic polyurethane wet slurry, thus forming a semi-finished product of the polyurethane synthetic leather; finally removing peculiar smell through photocatalysis under natural light, thus obtaining the wet polyurethane synthetic leather without peculiar smell. The prepared synthetic leather does not have any peculiar smell, and all kinds of peculiar smell in the environment can be removed under light to achieve the aim of purification. The synthetic leather is suitable for the fields, such as vamps, sofas and garments.

Description

technical field [0001] The invention relates to a production method of polyurethane synthetic leather, more specifically a preparation method of non-odor wet-process polyurethane synthetic leather. Background technique [0002] Polyurethane synthetic leather belongs to the category of polyurethane elastomers. It has soft and natural luster, soft touch, and a strong leather-like appearance. It has excellent mechanical properties such as excellent adhesion to substrates, wear resistance, flex resistance, and aging resistance. At the same time, it also has the advantages of good cold resistance, breathability, washability, convenient processing, and low price. It is the most ideal substitute for natural leather. However, there is still a certain gap with genuine leather in terms of air permeability. This is because the surface of polyurethane synthetic leather with high physical properties has a dense polyurethane film, which makes the air permeability significantly worse than...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/14D06N3/00C09D175/04C09D7/61C09D7/65
CPCC08L2205/16C09D7/62C09D7/70C09D175/04D06N3/005D06N3/0063D06N3/14D06N2209/165D06N2211/28C08L97/02C08K9/10C08K2003/2241
Inventor 胡先海罗俊杰付昌春罗辉王书升
Owner 安徽省思维新型建材有限公司