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Fast-curing instant glue and preparation method thereof

A technology of instant glue and nitrile rubber, applied in the field of instant glue, can solve problems such as low odor, and achieve the effects of small odor, improved flexibility, and poor thermal stability.

Inactive Publication Date: 2015-09-23
NINGBO PASCO UNITED IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In recent years, no whitening, low odor, environmental protection, high impact strength alkoxyalkyl cyanoacrylate instant adhesives and medical adhesive materials such as butyl cyanoacrylate, octyl cyanoacrylate, etc. have become the mainstream, but in There is still room for further improvement in impact resistance and quick drying, so it is necessary to develop a high-strength, impact-resistant fast-setting instant glue on the basis of existing technologies to meet the needs of market development

Method used

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  • Fast-curing instant glue and preparation method thereof
  • Fast-curing instant glue and preparation method thereof
  • Fast-curing instant glue and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A fast-curing instant glue, its components are:

[0040]

[0041] 100% quality;

[0042] Add the weighed methyl a-cyanoacrylate, butyl a-cyanoacrylate, and a-cyanoacrylic acid into the reaction kettle, and stir the temperature to 85°C; add the organic solvent and the well-proportioned organic solvent while stirring. Catalyst; then slowly and uniformly add nitrile butadiene rubber while stirring. The stirring time is 100 minutes to make the mixture evenly stirred. Before distillation, add an appropriate amount of polymerization inhibitor; then heat up and steam out the organic solvent to make the residual amount a small amount It should be less than 0.5 (wt)% of the total amount; under the second Roots, the modified a-cyanoacrylate products will be steamed out; in the steamed a-cyanoacrylate products, under nitrogen protection Next, add an appropriate amount of stabilizer and accelerating liquid, and stir evenly.

Embodiment 2

[0044] A fast-curing instant glue, its components are:

[0045]

[0046] 100% quality;

[0047] Add the weighed a-octyl cyanoacrylate and a-cyanoacrylic acid into the reaction kettle, and stir the temperature to 80°C; add the organic solvent and catalyst with a good ratio while stirring; then slowly and uniformly stir while mixing Add nitrile rubber and stir for 120 minutes to make the mixture evenly stirred. Before distilling, add an appropriate amount of polymerization inhibitor; then increase the temperature and steam out the organic solvent so that the residual amount should be 0.5 (wt )% or less; under the secondary roots, steam the modified a-cyanoacrylate products; in the steamed a-cyanoacrylate products, under the protection of nitrogen, add an appropriate amount of stabilizer and Promote liquid, stir evenly.

Embodiment 3

[0049] A fast-curing instant glue, its components are:

[0050]

[0051] 100% quality;

[0052] Add the weighed methoxyethyl a-cyanoacrylate, methoxybutyl a-cyanoacrylate, and a-cyanoacrylic acid into the reaction kettle, stir and heat up to 90℃; add the mixture while stirring The organic solvent and the catalyst have a good ratio; then slowly and uniformly add the nitrile rubber while stirring. The stirring time is 60 minutes to make the mixture evenly stirred. Before the distillation, add an appropriate amount of polymerization inhibitor; then heat up and distill the organic solvent. The residual amount should be less than 0.5 (wt)% of the total amount; under the second Roots, the modified a-cyanoacrylate products will be steamed out; the a-cyanoacrylate products will be steamed out In the product, under the protection of nitrogen, add an appropriate amount of stabilizer and accelerator, and stir evenly.

[0053] The following further explains the development process of the prese...

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Abstract

A fast-curing instant glue is characterized by including the following components by the mass percentage: 86-95% of alpha-cyanoacrylate, 0.5-2% of alpha-cyanoacrylic acid, 3-8% of butadiene-acrylonitrile rubber, 0.01-3% of a stabilizer, 0.5-3% of a promoting liquid, and 0.05-1% of a catalyst. A preparation method comprises the steps: adding alpha-cyanoacrylate and alpha-cyanoacrylic acid in a reaction kettle, and heating up to 60-95 DEG C while stirring; adding the organic solvent and the catalyst with the preset ratio; adding the butadiene-acrylonitrile rubber, and evenly stirring the mixed solution with the stirring time of 60-120 minutes; heating up and distilling off the organic solvent; under secondary Roots, distilling off a modified alpha-cyanoacrylate product; and finally adding a proper amount of the stabilizer and the promoting liquid under nitrogen protection. By modification of alpha-cyanoacrylate, and in cooperation with the promoting liquid adhesive technology, the original poor thermal stability and an albefaction phenomenon are improved; the aspects such as water resistance, thermal resistance and flexibility are greatly improved, and thus the effect of impact strength is improved; and the fast-curing instant glue is good in adhesive effect, small in smell and good in environmental protection.

Description

Technical field [0001] The invention relates to an instant glue, in particular to a fast-setting instant glue with high strength and impact resistance and a preparation method thereof. Background technique [0002] In 1958, EastmanKodark of the United States first successfully developed and marketed Eastman910, an adhesive with α-methyl cyanoacrylate as the main component (CA). Because of its many unique properties, it attracted the attention of advanced industrial countries in the world. Japan, Germany, Britain, Russia and my country successively carried out the research and production of CA after the 1960s, which promoted the rapid development of CA in the world. In China, the first small batch production of CA started. In the early stage of CA development, the market developed slowly due to low process yield, unstable quality and single varieties. [0003] CA is a one-component, solvent-free, low-viscosity, colorless and transparent liquid. It is cured under the catalysis of t...

Claims

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Application Information

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IPC IPC(8): C09J4/04C09J4/02C09J4/06
Inventor 钱小华
Owner NINGBO PASCO UNITED IND
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