Waterborne polyurethane-polyurea dispersion resin as well as preparation method and application thereof

A water-based polyurethane and dispersion technology, applied in the field of glass fiber impregnation film-forming agent, can solve the problems of not meeting the requirements of glass fiber processing, limited number of functional groups, low proportion of active ingredients, etc., and achieve excellent film-forming properties Solvent resistance, excellent solvent resistance, effects of high strength and mechanical properties

Active Publication Date: 2021-12-31
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the traditional waterborne polyurethane resin is used as a film forming agent, due to the low proportion of the active ingredients of the waterborne polyurethane resin in the immersion solution, the number of functional groups that can react with the curing agent is limited when the curing agent is added for crosslinking. ; In addition, the compound stability of waterborne polyurethane resin and other cationic additives in the immersion solution is also a technical problem that needs to be solved
Therefore, when the traditional water-based polyurethane resin is used as a film forming agent, its overall performance is poor and its strength is low, which cannot meet the requirements of glass fiber processing.

Method used

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  • Waterborne polyurethane-polyurea dispersion resin as well as preparation method and application thereof
  • Waterborne polyurethane-polyurea dispersion resin as well as preparation method and application thereof
  • Waterborne polyurethane-polyurea dispersion resin as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] (1) Add 37.84g HDI, 50g IPDI, 23g Ymer TM N120, 240g PNA2000, 16.4g neopentyl glycol, 0.12g BiCat8108, and 37g acetone, stirred and heated to 80°C for 3 hours, reacted until the NCO in the system basically reached or approached the theoretical value, and an isocyanate-terminated prepolymer was generated;

[0106] (2) Then cool down the system to about 50-56°C, add 550g of acetone, stir evenly, maintain the temperature between 40-45°C, dissolve and dilute the materials in the system, and obtain the diluted isocyanate-terminated prepolymer;

[0107] (3) Dissolve 4g of IPDA, 4g of hydroxyethylethylenediamine and 1.6g of A95 in 40g of water, stir thoroughly to obtain an aqueous solution, and add it to the diluted isocyanate obtained in step (2) within 1 to 3 minutes In the end-capped prepolymer, maintain the system at 45-50°C for chain extension reaction for 25 minutes; pour the prepolymer prepared by the chain extension reaction into a dispersion cup, and add it under h...

Embodiment 2

[0111] (1) Add 37.84g HDI, 50g IPDI, 23g Ymer TM N120, 240g of PTMEG2000, 16.4g of neopentyl glycol, 0.12g of BiCat8108 and 37g of acetone, stirred and heated to 80°C for 3 hours of reaction until the NCO in the system basically reached or approached the theoretical value, and an isocyanate-terminated prepolymer was generated;

[0112] (2) Then cool down the system to about 50-56°C, add 550g of acetone, stir evenly, maintain the temperature between 40-45°C, dissolve and dilute the materials in the system, and obtain the diluted isocyanate-terminated prepolymer;

[0113] (3) Dissolve 4g of IPDA, 4g of hydroxyethylethylenediamine and 1.6g of A95 in 40g of water, stir thoroughly to obtain an aqueous solution, and add it to the diluted isocyanate obtained in step (2) within 1 to 3 minutes In the end-capped prepolymer, maintain the system at 45-50°C for chain extension reaction for 25 minutes; pour the prepolymer prepared by the chain extension reaction into a dispersion cup, an...

Embodiment 3

[0117] (1) Add 37.84g HDI, 50g IPDI, 23g Ymer TM N120, 240g of CMA654, 12g of neopentyl glycol, 0.12g of BiCat8108 and 37g of acetone, stirred and heated to 80°C for 3 hours of reaction until the NCO in the system basically reached or approached the theoretical value, and an isocyanate-terminated prepolymer was generated;

[0118] (2) Then cool down the system to about 50-56°C, add 550g of acetone, stir evenly, maintain the temperature between 40-45°C, dissolve and dilute the materials in the system, and obtain the diluted isocyanate-terminated prepolymer;

[0119] (3) Dissolve 4g of IPDA, 4g of hydroxyethylethylenediamine and 1.6g of A95 in 40g of water, stir thoroughly to obtain an aqueous solution, and add it to the diluted isocyanate obtained in step (2) within 1 to 3 minutes In the end-capped prepolymer, maintain the system at 45-50°C for chain extension reaction for 25 minutes; pour the prepolymer prepared by the chain extension reaction into a dispersion cup, and add...

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Abstract

The invention belongs to the technical field of glass fiber infiltration film-forming agents, and particularly relates to waterborne polyurethane-polyurea dispersion resin and a preparation method and application thereof. The waterborne polyurethane-polyurea dispersion resin is prepared from the following raw materials through a reaction: (S1), diisocyanate; (S2) a polymer polyol; (S3) a nonionic hydrophilic compound; (S4) a polyol micromolecular chain extender containing reactive hydrogen and having a molecular weight of 30-200 g / mol; (S5) a sulfonic acid type hydrophilic chain extender containing reactive hydrogen; (S6) an amine micromolecular chain extender containing reactive hydrogen and having a molecular weight of 30-200 g / mol; and (S7) a monoamine micromolecular end-capping reagent containing reactive hydrogen and having a molecular weight of 30-300g / mol. The waterborne polyurethane-polyurea dispersion resin disclosed by the invention can keep good compounding stability with cationic components in an impregnating compound, and meanwhile, the waterborne polyurethane-polyurea dispersion resin is excellent in mechanical property, high-temperature yellowing resistance and solvent resistance, and has relatively good thermal weight loss.

Description

technical field [0001] The invention belongs to the technical field of glass fiber impregnation film-forming agent, and in particular relates to a water-based polyurethane-polyurea dispersion resin and its preparation method and application. Background technique [0002] Polyurethane resins have excellent properties and are widely used in many fields such as transportation, clothing, construction, textiles, and synthetic leather. As a branch of polyurethane resin, water-based polyurethane has superior performance, high strength, good toughness and elasticity after film formation; when used in the field of glass fiber infiltration treatment, its bonding performance and film-forming property are excellent, which can effectively protect glass fiber. , At the same time, its polarity is strong, it combines well with most matrix resins, and can better solve the problem of unsatisfactory interface bonding, so it can be used as the main film-forming agent component of reinforced gla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/73C08G18/75C08G18/66C08G18/48C08G18/42C08G18/32C08G18/12C03C25/326
CPCC08G18/73C08G18/755C08G18/722C08G18/6674C08G18/4238C08G18/4854C08G18/4833C08G18/4804C08G18/3206C08G18/3857C08G18/3234C08G18/3271C08G18/3281C08G18/12C03C25/326
Inventor 胡海东周操晋云全纪学顺郝宝祥孙家宽
Owner WANHUA CHEM GRP CO LTD
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