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Special one-component glue for red wood, and preparation method thereof

A single-component, mahogany technology, applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve the problems of long curing time and poor viscosity, and achieve the effect of short curing time and good viscosity

Inactive Publication Date: 2013-07-10
常州市金坛兆丰粘合剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] A one-component special glue for mahogany produced on the market, which has a long curing time, is easy to use, and has poor viscosity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Prepare this one-component mahogany special glue, formula:

[0046] 60 parts of phthalic anhydride;

[0047] 70 copies of PTA;

[0048] 95 parts of adipic acid;

[0049] 20 parts of ethylene glycol;

[0050] 130 parts of diethylene glycol;

[0051] MDI 20 copies;

[0052] 60 parts of ethanol.

[0053] The above formula is prepared according to the following steps:

[0054] Put phthalic anhydride, PTA (i.e. purified terephthalic acid), adipic acid, ethylene glycol, and diethylene glycol into the reaction kettle, heat up to 148°C to discharge water, then slowly heat up to 240±2°C, and keep warm for 2 hours under vacuum Stir, vacuum and stir, then cool, add MDI (diphenylmethane diisocyanate) to expand the viscosity, add ethanol to dilute the material, and pack.

[0055] The prepared one-component mahogany special glue was tested by a curing time tester, and the curing time was 8 hours. The viscosity was tested by GB10247-88, and the viscosity was 60mPa·s (25°C).

Embodiment 2

[0057] Prepare this one-component mahogany special glue, formula:

[0058] 65 parts of phthalic anhydride;

[0059] 75 copies of PTA;

[0060] 110 parts of adipic acid;

[0061] 35 parts of ethylene glycol;

[0062] 150 parts of diethylene glycol;

[0063] MDI 40 copies;

[0064] 80 parts of ethanol.

[0065] The above formula is prepared according to the following steps:

[0066] Put phthalic anhydride, PTA, adipic acid, ethylene glycol, and diethylene glycol into the reaction kettle, raise the temperature to 148°C to discharge water, then slowly raise the temperature to 240±2°C, keep warm for 2 hours and stir in vacuum, then cool down after vacuum stirring. Add MDI to expand the viscosity, add ethanol to dilute the material, and pack it.

[0067] The prepared one-component special glue for mahogany was tested by a curing time tester, and the curing time was 7.8 hours. The viscosity was tested by GB10247-88, and the viscosity was 90mPa·s (25°C).

Embodiment 3

[0069] Prepare this one-component mahogany special glue, formula:

[0070] 70 parts of phthalic anhydride;

[0071] 80 copies of PTA;

[0072] 120 parts of adipic acid;

[0073] 50 parts of ethylene glycol;

[0074] 180 parts of diethylene glycol;

[0075] 50 copies of MDI;

[0076] 100 parts of ethanol.

[0077] The above formula is prepared according to the following steps:

[0078] Put phthalic anhydride, PTA, adipic acid, ethylene glycol, and diethylene glycol into the reaction kettle, raise the temperature to 148°C to discharge water, then slowly raise the temperature to 240±2°C, keep warm for 2 hours and stir in vacuum, then cool down after vacuum stirring. Add MDI to expand the viscosity, add ethanol to dilute the material, and pack it.

[0079] The prepared one-component special glue for mahogany was tested by a curing time tester, and the curing time was 8.2h. The viscosity was tested by GB10247-88, and the viscosity was 40mPa·s (25°C).

[0080] Test and compa...

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Abstract

The invention provides special one-component glue for red wood, and a preparation method thereof. The special one-component glue for red wood comprises the following components in parts by weight: 60-70 parts of phthalic anhydride, 70-80 parts of PTA (purified terephthalic acid), 95-120 parts of adipic acid, 20-50 parts of ethylene glycol, 130-180 parts of diethylene glycol, 20-50 parts of MDI (44'-diphenylmethane diisocyanate), and 60-100 parts of ethanol. The preparation method comprises the steps of: feeding phthalic anhydride, PTA, adipic acid, ethylene glycol and diethylene glycol into a reaction kettle, increasing the temperature to 148 DEG C, discharging water, then slowly increasing the temperature to 240+ / -2DEG C, preserving heat for 2 hours, performing vacuum stirring, vacuumizing, stirring and then cooling, adding MDI for increasing viscosity, adding ethanol for dilution, discharging and packaging. The special one-component glue for red wood is short in curing time and good in viscosity.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a single-component mahogany special glue and a preparation method thereof. Background technique [0002] A one-component mahogany special glue produced on the market has a long curing time, is easy to use, and has poor viscosity. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the object of the present invention is to provide a single-component mahogany special glue with short curing time and good viscosity. [0004] Another object of the present invention is to provide a preparation method of the one-component mahogany special glue. [0005] The one-component mahogany special glue of the present invention comprises the following components in parts by mass: [0006] Phthalic anhydride 60-70 parts; [0007] 70-80 copies of PTA; [0008] Adipic acid 95-120 parts; [0009] 20-50 parts of ethylene glycol; [0010] 130-180 parts of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/06C08G18/76C08G18/42
Inventor 蔡兆松
Owner 常州市金坛兆丰粘合剂有限公司