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Polycaprolactone high-molecular prepolymer and preparation method thereof

A polycaprolactone and polymer technology, applied in the field of polycaprolactone polymer prepolymer and its preparation, can solve the problems of poor wear resistance and service life improvement effect, affecting the production quality of enterprises, easy degumming and breaking, etc. , to achieve the effect of strong anti-aging performance, strong toughness and long service life

Inactive Publication Date: 2014-09-24
上海壹永聚氨酯制品厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyurethane polymer materials are widely used in China and have become an indispensable and important material for Chinese enterprises, such as: industry, agriculture, construction, technology and other fields. The common domestic polyether materials and polyester materials have many disadvantages, such as not being wear-resistant, Short service life, easy degumming and fracture, etc., seriously affect the production quality of domestic enterprises
[0003] At present, in the improvement of the application of polyurethane materials, polycaprolactone polyol is used as the main synthetic material, which has a high degree of structural regularity, which can significantly improve the product toughness, low temperature resistance and other characteristics; but the wear resistance of the polycaprolactone products used The effect of improving the service life and service life is poor, and the polycaprolactone polyurethane material still needs to be improved

Method used

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  • Polycaprolactone high-molecular prepolymer and preparation method thereof
  • Polycaprolactone high-molecular prepolymer and preparation method thereof

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Effect test

Embodiment 1

[0026] Embodiment 1 Polycaprolactone polymer prepolymer

[0027] Raw material preparation: 85 parts of polycaprolactone polyol, 15 parts of polymethylenephenyl polyisocyanate, 7 parts of graphite, 7 parts of 4,4'-diphenylmethane-5-maleimide. The preparation steps are as follows:

[0028] 1) Dehydrating polycaprolactone polyol for 3.5 hours at a reaction temperature of 110°C;

[0029] 2) The reaction temperature is lowered to 75°C, and the dehydrated polycaprolactone polyol is mixed with polymethylenephenyl polyisocyanate, graphite and 4,4'-diphenylmethane-5-maleimide, and the temperature is maintained React for 9 hours;

[0030] 3) Then, keep the vacuum for 1 hour; the preparation is complete.

Embodiment 2

[0031] Embodiment 2 Polycaprolactone polymer prepolymer

[0032] Raw material preparation: 75 parts of polycaprolactone polyol, 5 parts of hexamethylene diisocyanate, 3 parts of graphite, 3 parts of 3,3'-dichloro-4,4'-diphenylmethanediamine. The preparation steps are as follows:

[0033] 1) Dehydrating polycaprolactone polyol for 3.5 hours at a reaction temperature of 100°C;

[0034] 2) The reaction temperature is lowered to 65°C, and the dehydrated polycaprolactone polyol is mixed with hexamethylene diisocyanate, graphite and 3,3'-dichloro-4,4'-diphenylmethanediamine, and kept Temperature reaction for 7 hours;

[0035] 3) Then, keep the vacuum for 1 hour; the preparation is complete.

Embodiment 3

[0036] Embodiment 3 Polycaprolactone polymer prepolymer

[0037] Raw material preparation: 80 parts of polycaprolactone polyol, 10 parts of methylcyclohexyl diisocyanate, 5 parts of molybdenum disulfide, 5 parts of 4,4'-diphenylmethane-5-maleimide. The preparation steps are as follows:

[0038] 1) Dehydrating polycaprolactone polyol for 3 hours at a reaction temperature of 105°C;

[0039] 2) The reaction temperature is lowered to 75°C, and the dehydrated polycaprolactone polyol is mixed with methylcyclohexyl diisocyanate, molybdenum disulfide and 4,4'-diphenylmethane-5-maleimide to keep the temperature Reaction for 8 hours;

[0040] 3) Then, keep the vacuum for 1 hour; the preparation is complete.

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Abstract

The invention provides a polycaprolactone high-molecular prepolymer which is prepared from the following raw materials in parts by weight: 75-85 parts of polycaprolactone polyalcohol, 5-15 parts of isocyanate, 3-7 parts of anti-wear agent and 3-7 parts of temperature resisting agent. The Shore hardness of the polycaprolactone high-molecular prepolymer is controlled at 30A-63D, and the application range is -20-120 DEG C. The prepared prepolymer solidifies slowly, and is easy for operation and storage. The prepolymer product at the production site has the advantages of favorable wear resistance, long service life, high toughness, high aging resistance, favorable water-resistant and oil-resistant effects, favorable temperature resistance, and no degumming or rupture.

Description

technical field [0001] The invention relates to the field of chemical preparation of polycaprolactone, in particular to a polycaprolactone polymer prepolymer and a preparation method thereof. Background technique [0002] Polyurethane elastomer is a block polymer composed of oligomer polyols as soft segments, diisocyanate chain extenders as hard segments, and soft segments and hard segments alternately arranged. Polyurethane polymer materials are widely used in China and have become an indispensable and important material for Chinese enterprises, such as: industry, agriculture, construction, technology and other fields. The common domestic polyether materials and polyester materials have many disadvantages, such as not being wear-resistant, Short service life, easy degumming and fracture, etc., seriously affect the production quality of domestic enterprises. [0003] At present, in the improvement of the application of polyurethane materials, polycaprolactone polyol is used...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/42C08G18/76C08G18/73C08G18/75C08G18/10C08K3/04C08K3/30C08K5/3415C08K5/17
CPCC08G18/12C08G18/10C08G18/3814C08G18/4277C08K3/04C08K3/30C08K5/17C08K5/3415C08K2003/3009
Inventor 丁延兵
Owner 上海壹永聚氨酯制品厂
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