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Anti-aging PU (polyurethane) modified material and preparation method thereof

A modified material and polyurethane technology, applied in the field of polyurethane aging-resistant modified materials and their preparation, can solve problems such as insufficient aging resistance, and achieve the effects of good aging resistance enhancement, improved aging resistance, and good dispersion.

Inactive Publication Date: 2018-04-06
SICHUAN LIZHI JIUCHUANG INTPROP OPERATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of insufficient aging resistance of existing polyurethane materials, and provide a polyurethane anti-aging modified material and a preparation method thereof; the present invention composites nano-calcium carbonate and polyurethane through targeted modification treatment, and The nano-calcium carbonate is uniformly dispersed in the polyurethane system, and the obtained polyurethane modified material has excellent aging resistance, which is beneficial to the application of polyurethane in more fields

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) 28 parts of nano-calcium carbonate were treated with 0.5 part of distearoyloxyisopropoxy aluminate;

[0033] (2) Coating the nano-calcium carbonate treated with the coupling agent with 3.5 parts of oxalamide and 3.5 parts of triphenyl phosphite;

[0034] (3) Mix the coated nano-calcium carbonate with 70 parts of polyurethane with a degree of polymerization of 900, and then extrude in a parallel electric field with an electric field strength of 2.0kv / m and a constant electric field direction to obtain a mixture;

[0035] (4) Mix the mixture obtained in step 3 with 25 parts of polyester polyol with a degree of polymerization of 160, 0.4 parts of diphenylmethane diisocyanate, 2 parts of ultraviolet absorbers, and 2 parts of antioxidants before proceeding Extrude to obtain polyurethane modified material.

Embodiment 2

[0037] (1) Treat 15 parts of nano-calcium carbonate with 0.3 part of distearoyloxyisopropoxy aluminate;

[0038](2) Coating the nano-calcium carbonate treated with the coupling agent with 2.5 parts of oxalamide and 2.5 parts of triphenyl phosphite;

[0039] (3) Mix the coated nano-calcium carbonate with 65 parts of polyurethane with a degree of polymerization of 1200, and then extrude in an electric field with an electric field strength of 2.8kv / m to obtain a mixture;

[0040] (4) Mix the mixture obtained in step 3 with 20 parts of polyester polyol with a degree of polymerization of 120, 0.3 parts of diphenylmethane diisocyanate, 1 part of ultraviolet absorber, and 3 parts of antioxidant before proceeding Extrude to obtain polyurethane modified material.

Embodiment 3

[0042] (1) Treat 20 parts of nano-calcium carbonate with 0.8 part of distearoyloxyisopropoxyaluminate;

[0043] (2) Coating the nano-calcium carbonate treated with the coupling agent with 5 parts of oxalamide and 5 parts of triphenyl phosphite;

[0044] (3) Mix the coated nano-calcium carbonate with 75 parts of polyurethane with a degree of polymerization of 600, and then extrude in a parallel electric field with an electric field strength of 1.5kv / m and an electric field direction unchanged to obtain a mixture;

[0045] (4) Mix the mixture obtained in step 3 with 30 parts of polyester polyol with a degree of polymerization of 200, 0.5 parts of diphenylmethane diisocyanate, 3 parts of ultraviolet absorber, and 1 part of antioxidant before proceeding Extrude to obtain polyurethane modified material.

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PUM

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Abstract

The invention discloses an anti-aging PU (polyurethane) modified material and a preparation method thereof. The anti-aging PU modified material is prepared from raw materials in parts by weight as follows: 65-75 parts of PU, 20-30 parts of polyester polyol, 15-20 parts of nano calcium carbonate, 5-10 parts of a modifier, 0.3-0.8 parts of a coupling agent, 0.3-0.5 parts of a crosslinking agent, 1-3parts of an ultraviolet absorber and 1-3 parts of an antioxidant. Nano calcium carbonate subjected targeted modification treatment is compounded with PU, and nano calcium carbonate is uniformly dispersed in a PU system, so that the obtained PU modified material has excellent anti-aging performance and facilitates application of PU in more fields.

Description

technical field [0001] The invention relates to the field of modified polyurethane materials, in particular to an aging-resistant modified polyurethane material and a preparation method thereof. Background technique [0002] Polyurethane is a polymer material containing carbamate groups in the main chain of the macromolecule, which has high mechanical strength and oxidation stability, high flexibility and resilience, excellent oil resistance, solvent resistance, and water resistance. Excellent performance and fire resistance, widely used in many fields. Polyurethane materials are mainly used in aviation, railways, construction, sports, etc., and can be used for surface finishing of wooden furniture and metal; for heat insulation and cold storage of storage tanks, pipelines, cold storage, beer, fermentation tanks, fresh-keeping barrels, and housing construction Insulation and waterproof, can also be used for prefabricated polyurethane boards; can be used for the manufacture ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L67/00C08K13/06C08K9/10C08K9/04C08K3/26
CPCC08L75/04C08K2003/265C08K2201/011C08L2201/08C08L67/00C08K13/06C08K9/10C08K9/04C08K3/26
Inventor 舒春柳
Owner SICHUAN LIZHI JIUCHUANG INTPROP OPERATION CO LTD