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A kind of nano-silver water-based polyurethane for self-sterilizing thin-walled materials and preparation method thereof

A water-based polyurethane and nano-silver technology, applied in the field of macromolecular polymers, can solve the problems of uneven dispersion of nano-silver particles

Active Publication Date: 2020-12-11
利洁时健康有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the above-mentioned shortcoming of the prior art, the object of the present invention is to provide a kind of nano-silver water-based polyurethane for self-sterilizing thin-walled materials and preparation method thereof, which effectively solves the problem of uneven dispersion of nano-silver particles in latex products. question

Method used

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  • A kind of nano-silver water-based polyurethane for self-sterilizing thin-walled materials and preparation method thereof
  • A kind of nano-silver water-based polyurethane for self-sterilizing thin-walled materials and preparation method thereof
  • A kind of nano-silver water-based polyurethane for self-sterilizing thin-walled materials and preparation method thereof

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Embodiment 1

[0031] A preparation method of nano-silver water-based polyurethane, comprising the following steps:

[0032] (1) Preparation of solution: preparation of 50% silver nitrate aqueous solution; preparation of 16.6% IPDA aqueous solution; preparation of 9.1% vitamin aqueous solution.

[0033] (2) Preparation of prepolymer: Put 3.5 parts of PTMEG 2000 and 14 parts of PPG 3000 into the reaction kettle, stir and heat to 100-110°C, and vacuum dehydrate under the condition of -0.1MPa until the water content in the macromolecular glycol is 0.03 % or less, cool down to 40°C, put in 4.59 parts of IPDI, stir and heat up to 90°C, keep warm for 2 hours, cool down to 50°C, put in 0.79 parts of DMPA, 0.35 parts of CHDM and 4.67 parts of acetone, stir and heat up to 75°C React for 5 hours, then lower the temperature to 10°C, add 0.42 parts of triethylamine and 7.0 parts of acetone, stir for 5 minutes, add 0.66 parts of silver nitrate aqueous solution, and stir for 2 minutes to obtain a prepolym...

Embodiment 2

[0037] A preparation method of nano-silver water-based polyurethane, comprising the following steps:

[0038] (1) Preparation solution: preparation mass fraction is 33% silver nitrate aqueous solution; preparation mass fraction is 16.6% IPDA aqueous solution; preparation mass fraction is 9.1% vitamin aqueous solution.

[0039] (2) Preparation of prepolymer: Put 7.97 parts of PTMEG 3000 and 9.11 parts of PPG 3000 into the reaction kettle, stir and heat to 100-110°C, and vacuum dehydrate at -0.1MPa until the water content in the macromolecular glycol is 0.03 % or less, cool down to 40°C, put in 3.31 parts of IPDI and 1.07 parts of HDI, stir and heat up to 90°C, keep warm for 3 hours, cool down to 50°C, put in 0.87 parts of DMPA, 0.27 parts of BD and 4.55 parts of acetone, Stir and heat up to 80°C for 5 hours, then cool down to 10°C, add 0.46 parts of triethylamine and 11.39 parts of acetone, stir for 5 minutes, add 0.99 parts of silver nitrate aqueous solution, and stir for 2 mi...

Embodiment 3

[0043] A preparation method of nano-silver water-based polyurethane, comprising the following steps:

[0044] (1) Prepare solution: prepare a silver nitrate aqueous solution with a mass fraction of 33%; prepare an IPDA aqueous solution with a mass fraction of 16.6%; prepare a vitamin aqueous solution with a mass fraction of 2%.

[0045] (2) Preparation of prepolymer: Put 16.9 parts of PPG 3000 into the reaction kettle, stir and heat to 100-110°C, vacuum dehydrate under the condition of -0.1MPa until the water content in the macromolecular glycol is below 0.03%, and cool down to 40 ℃, put in 3.27 parts of IPDI and 1.65 parts of H12MDI, stir and heat up to 90°C, keep warm for 2 hours, cool down to 50°C, put in 0.86 parts of DMPA, 0.23 parts of MPD and 4.51 parts of acetone, stir and heat up to 75°C for reaction 5h, then lower the temperature to 10°C, add 0.45 parts of triethylamine and 11.26 parts of acetone, stir for 5 minutes, add 1.95 parts of silver nitrate aqueous solution,...

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Abstract

The invention provides a nano-silver water-based polyurethane for self-sterilizing thin-walled materials and a preparation method thereof. The nano-silver water-based polyurethane comprises the following raw material components and parts by weight: 14-20 parts of polyether polyol; 1 polyisocyanate ‑5 parts; 0.7‑0.9 parts of hydrophilic chain extender; 0.2‑0.4 parts of small molecule chain extender; 3.2‑3.8 parts of post-chain extender; 0.1‑1.2 parts. In the nano-silver water-based polyurethane resin prepared by the invention, silver ions form nano-silver particles through an in-situ reduction reaction, which effectively solves the problem of uneven dispersion of the nano-silver particles. The polyurethane thin-walled products prepared from this resin not only have the characteristics of non-sensitization, good thermal conductivity, high strength, good compactness, and can effectively block bacteria and viruses, but also have the effect of sterilization and antibacterial, which greatly improves the safety of use.

Description

technical field [0001] The invention relates to the field of high molecular polymers, in particular to a nano-silver water-based polyurethane used for self-sterilizing thin-walled materials and a preparation method thereof. Background technique [0002] Thin-walled material products (such as condoms, gloves, etc.) can provide users with a comfortable, convenient and practical barrier against bacteria and viruses. Traditional thin-walled material products are mostly made of natural latex and synthetic polyisoprene rubber. There are water-soluble proteins in natural latex condoms, which can cause allergic reactions; although synthetic polyisoprene latex condoms do not contain water-soluble proteins, they are similar to natural rubber and will produce nitrosamines during the vulcanization process, which may cause cancer. Hidden danger. [0003] Water-based polyurethane material is an environmentally friendly material with good biocompatibility with the human body. It has been ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/75C08G18/73C08G18/48C08G18/34C08G18/32C08G18/12C08K3/08
CPCC08G18/12C08G18/4825C08G18/4854C08G18/73C08G18/755C08G18/758C08K3/08C08K2003/0806C08K2201/011C08G18/3234C08G18/348C08G18/3206C08G18/3212
Inventor 戴家兵郭文鹤冯林林赵曦李维虎何羽鸿
Owner 利洁时健康有限公司
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