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Four-component polyurethane adhesive for capsule material, preparation method and application thereof

A polyurethane adhesive, four-component technology, applied in the direction of polyurea/polyurethane adhesive, adhesive, non-polymer adhesive additives, etc., can solve the problems of low bonding strength, easy to open the layer, not resistant to rubbing, etc. Achieve high bonding strength, solve poor strength, and meet processing requirements

Active Publication Date: 2021-06-18
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, all the adhesives currently on the market are single-component or two-component adhesives. If the bonding strength is too low, the glued surface of the capsule material has defects such as easy-to-open layer, resistance to bending, and resistance to rubbing, which greatly reduces the comprehensive performance of the capsule material, especially the shear performance, and seriously affects the aerostat. Empty time and performance

Method used

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  • Four-component polyurethane adhesive for capsule material, preparation method and application thereof
  • Four-component polyurethane adhesive for capsule material, preparation method and application thereof

Examples

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preparation example Construction

[0069] The present invention also provides a kind of preparation method of four-component polyurethane adhesive, is characterized in that, comprises the following steps:

[0070] The preparation method of the A component is:

[0071] (1) Put PTMG and PCL into the reaction kettle, stir and heat up to 100-120°C, then vacuumize and keep warm, and when the moisture content is less than 0.02%, cool down to 55±1°C;

[0072] (2) Add catalyst, antioxidant, auxiliary antioxidant and ultraviolet absorber to the reactor, and keep the temperature at 55±1°C during the addition process;

[0073] (3) Add MDI dropwise to the reaction kettle for heating reaction, and lower the temperature to 40-50°C after the reaction;

[0074] (4) Add HMDI into the reactor for heating reaction, and after the reaction, lower the temperature to 40-50°C to obtain component A.

[0075] Specifically, the A component is prepared according to the following process:

[0076] (1) Put an appropriate amount of PTMG a...

Embodiment 1

[0122] This example provides a preparation and application method of a four-component polyurethane adhesive for capsule materials, which is prepared by mixing four components A, B, C, and D at a mass ratio of 5:1:1:1.

[0123] A component, B component, C component, and D component are composed of the following raw materials in parts by mass:

[0124] A component

[0125] 20 parts of MDI, 20 parts of HMDI, 30 parts of PTMG (Mn=1000), 30 parts of PCL (Mn=1000), 0.01 part of catalyst dibutyltin dilaurate, 0.1 part of antioxidant 1076, 1680.05 parts of auxiliary antioxidant, 0.3 part of ultraviolet absorber (UV-531);

[0126] B component

[0127] 45 parts of MDI, 55 parts of ether;

[0128] C component

[0129] 25 parts of RFE, 75 parts of ethyl acetate;

[0130] D component

[0131] 5 parts of aluminum hydroxide, 5 parts of stabilizer (vinyltrimethoxysilane and silicon dioxide mixed in a mass ratio of 5:1); 5 parts of white carbon black, 85 parts of acetone;

[0132] The p...

Embodiment 2

[0161] This example provides a preparation and application method of a four-component polyurethane adhesive for capsule materials, which is prepared by mixing four components A, B, C, and D at a mass ratio of 6:1:1:1.

[0162] A component, B component, C component, and D component are composed of the following raw materials in parts by mass:

[0163] A component

[0164] 21 parts of MDI, 21 parts of HMDI, 35 parts of PTMG (Mn=1000), 23 parts of PCL (Mn=1000), 0.01 part of catalyst dibutyltin dilaurate, 0.1 part of antioxidant 1076, 1680.05 parts of auxiliary antioxidant, UV absorber UVP-3210.3 parts;

[0165] B component

[0166] 47 parts of MDI, 53 parts of acetone;

[0167] C component

[0168] 26 parts of RFE, 74 parts of butyl acetate;

[0169] D component

[0170] 5 parts of magnesium hydroxide, 6 parts of stabilizer (vinyltrimethoxysilane and silicon dioxide mixed in a mass ratio of 6:1); 6 parts of white carbon black, 83 parts of acetone;

[0171] The production ...

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Abstract

The invention provides a four-component polyurethane adhesive for capsule materials. The four-component polyurethane adhesive comprises a component A, a component B, a component C and a component D, wherein the component A is a main agent, the component B is a curing agent, the component C is a tackifier, the component D is a buffering agent, the component C is prepared from triphenyl isocyanate thiophosphate and a solvent, and the component D comprises a flame-retardant inorganic filler, a stabilizer, white carbon black and a solvent. The four-component polyurethane adhesive provided by the invention has relatively high bonding strength, rubbing resistance, bending resistance and aging resistance, can effectively meet the processing requirements of capsule materials, and solves the problems that an existing adhesive is poor in strength, not resistant to creep and the like.

Description

technical field [0001] The invention belongs to the technical field of polyurethane adhesives, and in particular relates to a four-component polyurethane adhesive for capsule materials and its preparation method and application. Background technique [0002] The aerostat relies on the buoyancy generated by a gas lighter than air (such as helium) to achieve resident air, carrying various payloads or plane information, using its lift-off height to cover surveillance or visible areas, and is used in transportation and environmental monitoring. , communications broadcasting, integrated remote sensing, air early warning and other fields have a wide range of applications. [0003] The capsule material is the core key material of the aerostat and the main structure of the aerostat. Its weight accounts for more than two-thirds of the total weight of the aerostat. The performance of the capsule material directly affects the application efficiency of the aerostat , such as standing a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/04C09J11/04C09J11/06
CPCC09J175/04C09J11/04C09J11/06C08K2003/2227C08K2003/2224C08K13/04C08K7/26C08K3/22C08K3/2279C08K5/132C08K5/3475C08K5/1345C08K5/526
Inventor 刘向东张航杨宇明盛德鲲熊征蓉孙磊周妍
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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