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Phosphorus-boron heterochain prepolymer block polyurethane fabric flame-retardant water-based sizing agent and preparation method and application thereof

A prepolymer and polyurethane technology, applied in flame-retardant fibers, textiles and papermaking, fiber processing, etc., can solve the problems of easy powder loss, poor compatibility, and high dosage, and achieve the effect of smooth and wear-resistant hand feeling

Pending Publication Date: 2021-02-09
静宁县恒达有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantages of inorganic flame retardants are low price and many varieties, but the disadvantages are large specificity, large dosage, poor water resistance, poor compatibility, and large mobility. They are used in the preparation of flame retardant sizing agents for fabrics, and the slurry has poor stability. The fabric feels poor, easy to drop powder, highly toxic, and the flame retardant effect decays over time, etc.
The advantages of organic flame retardants are high flame retardant efficiency, small specific gravity, good water resistance, and good compatibility. Environmental pollution due to migration, and greater environmental pollution due to high halogen smoke in the event of a fire
The additive flame retardant is a low-molecular compound with flame-retardant function, which is added to the non-flame-retardant polymer system by blending. Its disadvantages are that the stability of the size is poor, the flame retardancy of the fabric finished by sizing is poor, and the risk of toxicity is high.
Intrinsic flame retardants are formed by chemically bonding elements with flame retardant functions into the molecular structure of the polymer through molecular design and synthesis, or hybridizing intrinsic flame retardant polymers with synthetic elements by physical blending. The polymer alloy, the fabric sizing agent prepared from it, has the advantage of improving the existence and stability of flame retardant elements, achieving the effect of environmental protection, safety and long-term flame retardancy of polymer fabrics. The disadvantages are that there are few varieties, high prices, Technically difficult

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Phosphorus-boron heterochain prepolymer block polyurethane fabric flame-retardant water-based sizing agent and preparation method and application thereof
  • Phosphorus-boron heterochain prepolymer block polyurethane fabric flame-retardant water-based sizing agent and preparation method and application thereof
  • Phosphorus-boron heterochain prepolymer block polyurethane fabric flame-retardant water-based sizing agent and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0056] 1. The preparation of phosphobora chain prepolymer block polyurethane aqueous copolymer comprises the following steps:

[0057] (1) In a four-neck flask equipped with mechanical stirring, nitrogen protection, condensing reflux, water bath heating and temperature control devices, add 50ml xylene, 75g PDCP-DGB, and dibutyltin dilaurate accounting for 3‰ of TDI mass.

[0058] (2) Turn on stirring and nitrogen, and heat the reaction system in step (1) to 60±1°C in a water bath. After the heat preservation system is uniform, add 17.0g TDI and 8.0g DMPA dropwise, keep the system temperature at 75±1°C, and keep warm for 2h , separation and recovery of the upper xylene.

[0059] (3) Cool down the reaction system after separation and removal of xylene to 45±1°C, then add monoethanolamine and 50ml of water, continue stirring for 1 hour, adjust the pH=9.0, and then adjust the product viscosity to 1500Cp (25°C) with water , to obtain the diluent of phosphorus bora chain prepolymer...

no. 2 example

[0064] 1. The preparation of phosphobora chain prepolymer block polyurethane aqueous copolymer comprises the following steps:

[0065] (1) In a four-necked flask equipped with mechanical stirring, nitrogen protection, condensing reflux, water bath heating and temperature control devices, add 50ml of xylene, 77g of PDCP-DGB, and dibutyltin dilaurate accounting for 5‰ of TDI mass.

[0066] (2) Turn on stirring and blow nitrogen, heat the reaction system of step (1) in a water bath to 65±1°C, after the heat preservation system is uniform, add 16.0g TDI and 7.0g DMPA dropwise, keep the system temperature at 75±1°C, and keep warm for 1.5 h, separating and recovering the upper layer of xylene.

[0067] (3) Cool down the reaction system after separation and removal of xylene to 50±1°C, then add monoethanolamine and 50ml of water, continue stirring for 1 hour, adjust the pH=8.0, and then adjust the product viscosity to 1800Cp (25°C) with water , to obtain the diluent of phosphorus bo...

no. 3 example

[0072] 1. The preparation of phosphobora chain prepolymer block polyurethane aqueous copolymer comprises the following steps:

[0073] (1) In a four-neck flask equipped with mechanical stirring, nitrogen protection, condensing reflux, water bath heating and temperature control devices, add 50ml of xylene, 76.0g of PDCP-DGB, and dibutyltin dilaurate accounting for 4‰ of TDI mass.

[0074] (2) Turn on stirring and nitrogen gas, and heat the reaction system in step (1) to 60±1°C in a water bath. After the heat preservation system is uniform, add 16.5g TDI and 7.5g DMPA dropwise, keep the system temperature at 70±1°C, and keep warm for 2.5 h, separating and recovering the upper layer of xylene.

[0075] (3) Cool down the reaction system after separation and removal of xylene to 45±1°C, then add monoethylamine and 50ml of water, continue stirring for 1h, adjust the pH=7.5, and then adjust the product viscosity to 2000Cp (25°C) with water ), to obtain the diluent of phosphorus bora...

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Abstract

The invention relates to a phosphorus-boron heterochain prepolymer block polyurethane fabric flame-retardant water-based sizing agent and a preparation method and application thereof. The phosphorus-boron heterochain prepolymer block polyurethane fabric flame-retardant water-based sizing agent is prepared from the following components in percentage: 11.0%-15.0% of polyethylene ethanol, 4.0%-6.0% of carboxymethyl cellulose, 4.0%-5.0% of filler and 75.0%-80.0% of a phosphorus-boron heterochain prepolymer block polyurethane water-based copolymer. The preparation method of the water-based copolymer comprises the following steps that (1), an organic solvent, the phosphorus-boron heterochain prepolymer and dibutyltin dilaurate are mixed for heat preservation in a protective atmosphere under a heating condition, toluene diisocynate and dimethylolpropionic acid are added after the temperature of the system is uniform, heat preservation is carried out after the system is heated, and the solventis separated; and (2), the reaction system is cooled, a neutralizer and water are added, and stirring is carried out and the pH value is adjusted to obtain the water-based copolymer. Phosphorus-boronflame-retardant elements and hydrophilic groups are bonded into a polymer molecular structure in a chemical bond form through molecular design and synthesis, and the sizing agent suitable for rollercoating or spraying of the surface of the fabric is obtained.

Description

technical field [0001] The invention relates to the technical field of sizing agents for textile fabrics, in particular to a flame-retardant water-based sizing agent for phosphorus bora chain prepolymer block polyurethane fabrics and its preparation method and application. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] The sizing agent is a slurry-like polymer dispersion system composed of film-forming substances. The fabric is attached to the surface of the fabric by padding and padding. After drying and forming a film, it wraps the surface of the fabric, thereby giving the fabric a smooth, thick, plump and stiff feel. The application of various functional materials in ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D06M15/333D06M15/09D06M15/555D06M11/76D06M11/79D06M101/38
CPCD06M15/333D06M15/09D06M15/555D06M11/76D06M11/79D06M2200/30D06M2200/40D06M2101/38
Inventor 郭军红杜少辉郭润兰闫银鹏李婷张建茂崔锦峰李虎林周应萍杨保平田力慕波
Owner 静宁县恒达有限责任公司
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