Method for manufacturing polyether organosilicone segmented polyurethane material, product and application

A technology of polyether silicone and polyurethane materials, which can be used in medical formulations, catheters, medical science, etc., can solve the problems of poor mechanical properties, poor low temperature resistance, and poor hydrophobic properties of materials, and achieve excellent mechanical properties and low temperature Excellent performance and hydrophobicity, the effect of simple steps

Inactive Publication Date: 2015-03-25
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention aims to overcome the defects of poor compatibility between the polyurethane chain link and the silicone chain link, poor material mechanical properties, poor low temperature resistance, poo

Method used

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  • Method for manufacturing polyether organosilicone segmented polyurethane material, product and application
  • Method for manufacturing polyether organosilicone segmented polyurethane material, product and application
  • Method for manufacturing polyether organosilicone segmented polyurethane material, product and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Polyether-silicone block structure with a molecular weight of 2270, in polyurethane prepolymer When the group mass fraction is 5.85%, the NCO / OH molar ratio is 1.02, and the hard segment content is 30%, the polyurethane elastomer containing polyether-organic silicon block is prepared and its application in biomaterials.

[0039] The preparation method of the polyether-organic silicon block polyurethane elastomer in this embodiment comprises the following steps:

[0040] Step 1: Preparation of modified polyurethane prepolymer containing 2270 molecular weight polyether-silicone block

[0041] 2270 molecular weight dihydroxyl-terminated polyether-silicon block PEO-PDMS-PEO (Momentive product) and MDI monomer, according to the composition of the molar ratio, see Table 1, prepared by prepolymer synthesis bulk polymerization. The initial reactant 60.38 grams (0.028 moles) of PEO-PDMS-PEO with a molecular weight of 2270, and 37.4 grams (0.151 moles) of MDI were added to a fo...

Embodiment 2

[0051] When the polyether-silicone block structure with a molecular weight of 2640, the -NCO group mass fraction of the polyurethane prepolymer is 6.20%, the molar ratio of NCO / OH is 1.02, and the hard segment content is 30%, the polyether-containing - Silicone segmented polyurethane elastomers and their applications in biomaterials.

[0052] The preparation method of the polyether-organic silicon block polyurethane elastomer in this embodiment comprises the following steps:

[0053] Step 1: Preparation of modified polyurethane prepolymer containing 2640 molecular weight polyether-silicone block

[0054] 2640 molecular weight dihydroxyl-terminated polyether-silicon block PEO-PDMS-PEO (Momentive product) and MDI monomer, according to the composition of the molar ratio, see Table 3, prepared by prepolymer synthesis bulk polymerization. The initial reactant 61.78 grams (0.023 moles) of PEO-PDMS-PEO with a molecular weight of 2640, and 35.2 grams (0.142 moles) of MDI were added t...

Embodiment 3

[0063] The polyether-silicone block structure with a molecular weight of 3380, the -NCO group mass fraction of the polyurethane prepolymer is 6.55%, the molar ratio of NCO / OH is 1.02, and the hard segment content is 30%. - Silicone segmented polyurethane elastomers and their applications in biomaterials.

[0064] The preparation method of the polyether-organic silicon block polyurethane elastomer in this embodiment comprises the following steps:

[0065] Step 1: Preparation of modified polyurethane prepolymer containing polyether-silicone block with molecular weight of 3380

[0066] 3380 molecular weight dihydroxyl-terminated polyether-silicon block PEO-PDMS-PEO (Momentive product) and MDI monomer, according to the composition of the molar ratio, see Table 5, prepared by prepolymer synthesis bulk polymerization. The initial reactant 58.81 grams (0.017 moles) of PEO-PDMS-PEO with a molecular weight of 3380, and 32.7 grams (0.132 moles) of MDI were added to a four-necked flask ...

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Abstract

The invention discloses a method for manufacturing a polyether organosilicone segmented polyurethane material, a product and application. The method for manufacturing the polyether organosilicone segmented polyurethane material comprises the following steps that (1), under the condition of protective gas, namely, the solvent-free condition, MDI and PEO-PDMS-PEO are evenly mixed, and copolymerization is carried out under the condition of 70 DEG C to 100 DEG C, and polyether organosilicone block polyurethane prepolymer is manufactured; (2), the polyether organosilicone block polyurethane prepolymer and BDO are mixed evenly, the mixture is poured into a preheated teflon disc, then, the teflon disc is placed in an oven of 110 DEG C to be heated for 1 h, the teflon disc continues to be cured in an oven of 90 DEG C for 12 h after demolding, and the teflon disc is cured for one week at room temperature. The method is simple in step, free of solvents and more environmentally friendly. The polyether organosilicone segmented polyurethane material is excellent in mechanical property, low temperature property and hydrophobic property, no solvent residue exists, and the material can be used as a biological material implanted into a human catheter.

Description

technical field [0001] The invention relates to a preparation method, product and application of a polyether organosilicon block polyurethane material. Background technique [0002] Thermoplastic polyurethane elastomer (English abbreviation TPU) is formed by the gradual addition and polymerization of oligomer polyols such as polyether, polyester or polyolefin, polyisocyanate and diol or diamine chain extenders. It is a comprehensive property Excellent polymer synthetic material, the hardness can be adjusted in a wide range, and it can still maintain high elasticity in a wide range of hardness, high strength, high elongation, excellent oil resistance and solvent resistance. Polyester or polyether chain segments gather together to form soft segment micro-domains due to their weak polarity; due to their strong polarity and rigidity, the intermolecular cohesion energy of carbamate groups is large to form hydrogen bond effects, and the aggregation Together they form hard segment...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/65C08G18/64C08G18/32C08G18/10A61L31/06A61L31/14
CPCC08G18/7671A61L29/06A61L29/14A61L2400/00C08G18/10C08G18/3206C08G18/64C08G18/6511
Inventor 戴泽亮董擎之杨凯
Owner EAST CHINA UNIV OF SCI & TECH
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