Macromolecular antibacterial polyurethane memory foam and preparation method thereof

A polyurethane and polymer technology, applied in the field of polyurethane materials, can solve problems such as pollution, environmental degradation, migration of antibacterial properties, etc., and achieve good environmental protection and safety effects

Inactive Publication Date: 2021-06-29
FUJIAN GENEROUS SLEEP TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Invention patent CN111440283A improves the antibacterial effect of memory cotton through the synergistic effect of nano-silver and far-infrared additives. Invention patent CN105400176A improves the antibacterial effect through the compounding of organic antibacterial agent, nano-silver antibacterial agent and chitosan, but in essence it is still an external co- In the mixed way, it is easy to migrate and cause the decline of antibacterial performance and environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This embodiment provides a polymer antibacterial polyurethane memory cotton, which is characterized in that it includes the following raw material components:

[0037] Polyguanidine modified isocyanate prepolymer, 55 parts by weight;

[0038] Polyether polyol I, 65 parts by weight;

[0039] Polyether polyol II, 30 parts by weight;

[0040] Foam stabilizer, 1 part by weight;

[0041] Composite amine catalyst, 0.6 parts by weight;

[0042] Water, 2.5 parts by weight.

[0043] Described polyguanidine modified isocyanate prepolymer adopts following method to make:

[0044] (S1) get polyhexamethylene biguanide hydrochloride, molecular formula is (C 8 h 17 N 5 ) n xHCl, n is a natural number between 12-16, the polyhexamethylene biguanide hydrochloride is dissolved in polyether polyol I to obtain a mixture; the addition of the polyhexamethylene biguanide hydrochloride The amount accounts for 10% of the mass of polyether polyol I;

[0045] (S2) Add the mixture describ...

Embodiment 2

[0050] This embodiment provides a polymer antibacterial polyurethane memory cotton, which is characterized in that it includes the following raw material components:

[0051] Polyguanidine modified isocyanate prepolymer, 30 parts by weight;

[0052] Polyether polyol I, 85 parts by weight;

[0053] Polyether polyol II, 15 parts by weight;

[0054] Foam stabilizer, 2 parts by weight;

[0055] Composite amine catalyst, 0.5 parts by weight;

[0056] Water, 4 parts by weight.

[0057] Described polyguanidine modified isocyanate prepolymer adopts following method to make:

[0058](S1) get polyhexamethylene biguanide hydrochloride, molecular formula is (C 8 h 17 N 5 ) n xHCl, n is a natural number between 12-16, the polyhexamethylene biguanide hydrochloride is dissolved in polyether polyol I to obtain a mixture; the addition of the polyhexamethylene biguanide hydrochloride The amount accounts for 10% of the mass of polyether polyol I;

[0059] (S2) Add the mixture described...

Embodiment 3

[0064] This embodiment provides a polymer antibacterial polyurethane memory cotton, which is characterized in that it includes the following raw material components:

[0065] Polyguanidine modified isocyanate prepolymer, 60 parts by weight;

[0066] Polyether polyol I, 55 parts by weight;

[0067] Polyether polyol II, 40 parts by weight;

[0068] Foam stabilizer, 0.5 parts by weight;

[0069] Composite amine catalyst, 1.5 parts by weight;

[0070] Water, 2 parts by weight.

[0071] Described polyguanidine modified isocyanate prepolymer adopts following method to make:

[0072] (S1) get polyhexamethylene biguanide hydrochloride, molecular formula is (C 8 h 17 N 5 ) n xHCl, n is a natural number between 12-16, the polyhexamethylene biguanide hydrochloride is dissolved in polyether polyol I to obtain a mixture; the addition of the polyhexamethylene biguanide hydrochloride The amount accounts for 10% of the mass of polyether polyol I;

[0073] (S2) Add the mixture descri...

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Abstract

The invention relates to macromolecular antibacterial polyurethane memory foam and a preparation method thereof, wherein the macromolecular antibacterial polyurethane memory foam is prepared by taking a polyguanidine modified isocyanate prepolymer, polyether polyol I, polyether polyol II, a foam stabilizer and a compound amine catalyst as raw materials; in the polyguanidine modified isocyanate prepolymer, an antibacterial group is permanently grafted on a polyurethane chain segment, so that the prepared macromolecular antibacterial polyurethane memory foam is good in environmental protection safety and has lasting antibacterial performance; and the problems that in the prior art, due to migration of an antibacterial agent, the antibacterial performance of additional blending type antibacterial polyurethane is reduced, and pollution is caused are effectively solved. Data show that the antibacterial rate of the macromolecular antibacterial polyurethane memory foam detected according to the national standard GB/T20944 is up to 99%, and the antibacterial rate is up to 98.5% after the macromolecular antibacterial polyurethane memory foam is washed for 50 times with water.

Description

technical field [0001] The invention belongs to the technical field of polyurethane materials, and in particular relates to a polymer antibacterial polyurethane memory cotton and a preparation method thereof. Background technique [0002] Polyurethane memory foam is a kind of polyurethane material. It is a multi-block copolymer with relatively superior thermotropic shape memory function and has the commonality of plastic and rubber. Polyurethane memory foam is mainly composed of soft segment polymers with low thermal transition temperature and hard segment polymers with high thermal transition temperature. The soft segment polymer is generally composed of polyester or polyether polyol, which is a reversible phase. The ester segment molecules are composed of extremely strong hydrogen bond interactions and are the stationary phase. Due to the difference in the molecular structure of the soft segment and the hard segment in polyurethane, the two are thermodynamically incompati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/40C08G18/48C08G18/64C08J9/08C08G101/00
CPCC08G18/4837C08G18/4829C08G18/64C08G18/4081C08G2280/00
Inventor 杨洪启温剑陈俊铃
Owner FUJIAN GENEROUS SLEEP TECH CO LTD
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