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Modified polyurethane bonding agent and preparation method thereof

A polyurethane and adhesive technology, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve the problem of insufficient long post-adhesive time, short interval between initial adhesive and surface-drying, unfavorable film High thixotropy, guaranteed thixotropy, and simple preparation

Active Publication Date: 2019-03-01
JIANGMEN CHANGHE CHEM IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of polyurethane adhesive cannot be used well in some industries that require large-scale construction on site, because the reaction process of this type of polyurethane adhesive cannot provide a long enough post-adhesion time, initial adhesion and surface dryness. The short time interval is not conducive to the bonding construction of large-area sheets and coils

Method used

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  • Modified polyurethane bonding agent and preparation method thereof
  • Modified polyurethane bonding agent and preparation method thereof
  • Modified polyurethane bonding agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A modified polyurethane binder, which includes A component and B component,

[0052] In parts by mass, the A component includes the following raw material components:

[0053]

[0054]Preparation of component A: Put the weighed DL-1000D, EP-330N, DL-2000D, fumed silica, plasticizer T-50 and calcium carbonate (400 mesh) into the reaction bottle, stir and heat up for 110- 115°C, vacuum-0.095-0.1Mpa dehydration for 1.5-2 hours, moisture requirement ≤ 200ppm, cool down to 65-70°C, add isocyanate to keep it warm for 2 hours, then add organotin catalyst to keep warm for 2 hours, then cool down to 60°C, Add Antioxidant-264 and Light Stabilizer UV-9, cool down and stir for 15 minutes, then discharge and pack below 50°C.

[0055] In parts by mass, the B component includes the following raw material components:

[0056]

[0057]

[0058] Preparation of component B: First put the weighed chlorinated palm oil methyl ester into the dispersion tank, then put the pre-mixed ...

Embodiment 2

[0061] A modified polyurethane binder, which includes A component and B component,

[0062] In parts by mass, the A component includes the following raw material components:

[0063]

[0064] Preparation of component A: Put the weighed DL-1000D, EP-330N, DL-2000D, fumed silica, plasticizer T-50 and calcium carbonate (400 mesh) into the reaction bottle, stir and heat up for 110- 115°C, vacuum-0.095-0.1Mpa dehydration for 1.5-2 hours, moisture requirement ≤ 200ppm, cool down to 65-70°C, add isocyanate to keep it warm for 2 hours, then add organotin catalyst to keep warm for 2 hours, then cool down to 60°C, Add Antioxidant-264 and Light Stabilizer UV-9, cool down and stir for 15 minutes, then discharge and pack below 50°C.

[0065] In parts by mass, the B component includes the following raw material components:

[0066]

[0067]

[0068] Preparation of component B: First put the weighed chlorinated palm oil methyl ester into the dispersion tank, then put the pre-mixed...

Embodiment 3

[0071] A modified polyurethane binder, which includes A component and B component,

[0072] In parts by mass, the A component includes the following raw material components:

[0073]

[0074] Preparation of component A: Put the weighed DL-1000D, EP-330N, DL-2000D, fumed silica, plasticizer T-50 and calcium carbonate (400 mesh) into the reaction bottle, stir and heat up for 110- 115°C, vacuum-0.095-0.1Mpa dehydration for 1.5-2 hours, moisture requirement ≤ 200ppm, cool down to 65-70°C, add isocyanate to keep it warm for 2 hours, then add organotin catalyst to keep warm for 2 hours, then cool down to 60°C, Add Antioxidant-264 and Light Stabilizer UV-9, cool down and stir for 15 minutes, then discharge and pack below 50°C.

[0075] In parts by mass, the B component includes the following raw material components:

[0076]

[0077]

[0078] Preparation of component B: First put the weighed chlorinated palm oil methyl ester into the dispersion tank, then put the pre-mixed...

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Abstract

The invention provides a modified polyurethane bonding agent and a preparation method thereof. The modified polyurethane bonding agent is prepared from an ingredient A and an ingredient B, wherein theingredient A is prepared from the following raw material ingredients in parts by mass: 30 to 70 parts of polyether polyol, 0 to 5 parts of anti-settling agents, 1 to 10 parts of plasticizers A, 0 to40 parts of filling materials A, 5 to 20 parts of isocyanate, 0.01 to 0.1 part of catalysts, 0 to 0.5 part of antioxidants and 0 to 0.5 part of light stabilizing agents; the ingredient B is prepared from the following raw materials in parts by mass: 10 to 30 parts of plasticizers B, 0 to 0.5 part of emulsifiers, 0 to 5 parts of water, 20 to 50 parts of filling materials B and 0.5 to 5 parts of prepolymers; the mass ratio of the ingredient A to the ingredient B is 1:(0.5 to 5). The bonding agent provided by the invention can provide sufficient long post bonding time, and the large-area sheet material and coiled material bonding construction is facilitated.

Description

technical field [0001] The invention belongs to the technical field of polyurethane binders, and relates to a modified polyurethane binder and a preparation method thereof, in particular to a preparation method of a modified polyurethane prepolymer and a functional high-thixotropic slurry. Background technique [0002] Polyurethane binder is an important part of the rapidly developing polyurethane resin, and has been widely used in many aspects. However, free isocyanate toxic monomers are prepared from hydroxyl-terminated polyvalent epoxy compounds and isocyanate-terminated polyurethane prepolymers to prepare epoxy-based polyurethanes, and then formulated with polyamine compounds to form polyurethane adhesives. However, this type of polyurethane adhesive cannot be used well in some industries that require large-scale construction on site, because the reaction process of this type of polyurethane adhesive cannot provide a long enough post-adhesion time, initial adhesion and s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/08C09J11/04C09J11/06C08G18/76C08G18/48
Inventor 赵文海
Owner JIANGMEN CHANGHE CHEM IND GRP
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