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Solvent-free synthetic leather polyurethane composite material and preparation method thereof

A technology of polyurethane composite material and synthetic leather, which is applied in coating, textile and papermaking, etc., can solve problems such as unfavorable operation, short film forming time, poor hydrolysis resistance, etc., and achieve improved thixotropy, good mechanical properties, flow Good hanging effect

Active Publication Date: 2022-05-06
SHANDONG INOV POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its hydrolysis resistance is not good, and the film-forming time is short, which is not conducive to operation.

Method used

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  • Solvent-free synthetic leather polyurethane composite material and preparation method thereof
  • Solvent-free synthetic leather polyurethane composite material and preparation method thereof
  • Solvent-free synthetic leather polyurethane composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Prepare foamed polyurethane sealant for batteries by the following raw material ratio and method:

[0032] Group A is divided into:

[0033]

[0034] Group B is divided into:

[0035] DXD-3310B 100kg.

[0036] Weigh 60kg of PE2445, 15kg of 8005, 15.5kg of 3500T, 5kg of DL400, 3kg of R200, 0.3kgH 2 O, 1.0kg of DC193 and 0.5kg of SA-8 were put into the reaction kettle and stirred, the temperature was raised to 50°C, the rotation speed was 40 rpm, and stirred for 0.5 hours to obtain component A;

[0037] Mix component A and component B (DXD-3310B) evenly at a mass ratio of 100:50, then roll coat it on release paper, put it in an oven at 100-150°C, and take it out of the oven when the coating starts to become milky Cover it with non-woven fabric, and continue to put it into an oven at 100-150°C for aging for 3-5 minutes to obtain solvent-free polyurethane synthetic leather.

Embodiment 2

[0039] Prepare foamed polyurethane sealant for batteries by the following raw material ratio and method:

[0040] Group A is divided into:

[0041]

[0042] Group B is divided into:

[0043] DXD-3310B 100kg.

[0044] Weigh 54.8kg of PE2445, 20kg of 8005, 20kg of 3500T, 3kg of DL400, 1kg of R200, 0.5kgH 2 O, 0.5kg of DC193 and 0.2kg of SA-8 were put into the reaction kettle and stirred, the temperature was raised to 60°C, the rotation speed was 50 rpm, and stirred for 1 hour to obtain component A;

[0045] Mix component A and component B (DXD-3310B) evenly at a mass ratio of 100:40, then roll coat it on release paper, put it in an oven at 100-150°C, and take it out of the oven when the coating starts to become milky Cover it with non-woven fabric, and continue to put it into an oven at 100-150°C for aging for 3-5 minutes to obtain solvent-free polyurethane synthetic leather.

Embodiment 3

[0047] Prepare foamed polyurethane sealant for batteries by the following raw material ratio and method:

[0048] Group A is divided into:

[0049]

[0050] Group B is divided into:

[0051] DXD-3310B 100kg.

[0052] Weigh 50kg of PE2445, 18kg of 8005, 18kg of 3500T, 10kg of DL400, 2.4kg of R200, 0.4kgH 2 O, 0.8kg of DC193 and 0.4kg of SA-8 were put into the reaction kettle and stirred, the temperature was raised to 55°C, the rotation speed was 55 rpm, and stirred for 50 minutes to obtain component A;

[0053] Mix component A and component B (DXD-3310B) evenly at a mass ratio of 100:50, then roll coat it on release paper, put it in an oven at 100-150°C, and take it out of the oven when the coating starts to become milky Cover it with non-woven fabric, and continue to put it into an oven at 100-150°C for aging for 3-5 minutes to obtain solvent-free polyurethane synthetic leather.

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Abstract

The invention relates to the technical field of solvent-free synthetic leather, in particular to a solvent-free polyurethane synthetic leather composition and a preparation method thereof. The solvent-free synthetic leather combination material of the present invention is composed of component A and component B mixed in a weight ratio of 100:40-50; component A is: polyester polyol, polyether polyol, polyester ether , hardener, foaming agent, thickener, foam stabilizer, catalyst; B component is polyester modified MDI. The solvent-free polyurethane synthetic leather combination material of the present invention is solvent-free during production and use, and is safe and environmentally friendly; the synthetic leather coating prepared at the same time has the advantages of both polyester and polyether systems, and the obtained product is not only light in weight, but also has excellent mechanical properties , Good hydrolysis resistance.

Description

technical field [0001] The invention relates to the technical field of polyurethane synthetic leather, in particular to a solvent-free synthetic leather polyurethane composite material and a preparation method thereof. Background technique [0002] Polyurethane synthetic leather belongs to the category of polyurethane microporous elastomers. It has soft and natural luster, soft touch, and a strong leather-like appearance. 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 and is widely used in clothing, shoemaking, bags, furniture and other industries. [0003] At present, the production of polyurethane synthetic leather still uses solvent-based polyurethane, and a large amount of solvents, such as DMF, toluene and butanone, are used in the production and manufacturing process of polyurethane. Not only will it cause solvent pollution durin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/48C08G18/42C08G18/16C08K7/26D06N3/14C08G101/00
CPCC08G18/4018C08G18/4829C08G18/42C08G18/48C08G18/16C08K7/26D06N3/146D06N2203/068D06N2211/28
Inventor 孙清峰甘经虎郭勇生燕杰善崔玉志
Owner SHANDONG INOV POLYURETHANE
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