Environmental-friendly casein insulating paste

A technology of insulating glue and casein, which is applied in the direction of adhesives, non-polymer adhesive additives, adhesive additives, etc., can solve problems affecting health, synthetic glue pollutes the environment, and achieves the effect of not polluting the environment

Inactive Publication Date: 2011-07-13
甘肃省商业科技研究所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a healthy and environment-friendly casein insulat

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1:

[0027] (A) Dissolve

[0028] Weigh 100kg casein into the reactor, then add 500kg of water and stir evenly, then add a 15% NaOH solution with a concentration of 15% by mass, adjust the pH to 7.5, and heat up while stirring. When the temperature reaches 55°C, the overall solution is Colloidal, keep stirring at constant temperature until the casein particles are completely dissolved;

[0029] (B) Add auxiliary materials

[0030] In the colloidal solution dissolved in step (a), add 50kg methyl acrylate, 100kg starch, 10kg zinc oxide, 150kg urea, 10kg dimethyl silicon oxide oil, 30kg paraffin oil and 50kg ethyl paraben in sequence, while stirring Increase the temperature. When the added auxiliary materials are completely dissolved, the colloidal solution is heated to 80°C, and stirring is continued at a constant temperature for 30 minutes, and the final pH of the colloidal solution is maintained at 7.5;

[0031] (C) Cool down

[0032] Stop heating and continue stirring ...

Example Embodiment

[0038] Example 2:

[0039] (A) Dissolve

[0040] Weigh 150kg casein into the reactor, then add 600kg of water and stir evenly, then add a 15% NaOH solution with a mass percentage concentration, adjust the pH to 7.8, and heat up while stirring. When the temperature reaches 60°C, the overall solution is Colloidal, keep stirring at constant temperature until the casein particles are completely dissolved;

[0041] (B) Add auxiliary materials

[0042] In the colloidal solution dissolved in step (a), add 75kg ethyl acrylate, 150kg starch, 15kg zinc oxide, 175kg urea, 25kg dimethyl silicone oil, 50kg paraffin oil and 75kg ethyl paraben in sequence, while stirring Increase the temperature. When the added auxiliary materials are completely dissolved, the colloidal solution is heated to 83°C, and stirring is continued at a constant temperature for 40 minutes, and the final pH of the colloidal solution is maintained at 7.8;

[0043] (C) Cool down

[0044] Stop heating and continue stirring the c...

Example Embodiment

[0051] Example 3

[0052] (A) Dissolve

[0053] Weigh 300kg casein and add it to the reactor, then add 700kg of water and stir evenly, then add a 15% NaOH solution with a concentration of 15% by mass, adjust the pH to 8.0, and heat up while stirring. When the temperature reaches 65°C, the overall solution is Colloidal, keep stirring at constant temperature until the casein particles are completely dissolved;

[0054] (B) Add auxiliary materials

[0055] In the colloidal solution dissolved in step (a), add 100kg propyl acrylate, 300kg starch, 30kg zinc oxide, 350kg urea, 50kg dimethyl silicone oil, 70kg paraffin oil and 100kg ethyl paraben in sequence, while stirring Increase the temperature. When the added auxiliary materials are completely dissolved, the colloidal solution is heated to 85°C, and stirring is continued at a constant temperature for 45 minutes, and the final pH of the colloidal solution is maintained at 8.0;

[0056] (C) Cool down

[0057] Stop heating and continue sti...

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Abstract

The invention discloses an environmental-friendly casein insulating paste, which is prepared by adopting the steps of: adding water in casein for dissolving, regulating pH value to 7.5-8.0, enabling a solution to be integrally shaped as a colloid when stirring and raising the temperature to 55-65 DEG C, and continuously stirring at constant temperature until casein particles are completely dissolved; sequentially adding acrylate, starch, zinc oxide, urea, dimethyl oxidized silicone oil, paraffin oil and ethylparaben, stirring and raising temperature; after auxiliary materials are completely dissolved, raising the temperature to 80-85 DEG C, stirring at constant temperature for 30-45min, and keeping pH value between 7.5 and 8.0; reducing the temperature to 35-40 DEG C, and filtering to obtain milk white or light yellow uniform semi-transparent viscous fluid without impurities; and packaging, closely storing, and placing and ageing for 24-72h at normal temperature to obtain a finished product of the environmental-friendly casein insulating paste. The environmental-friendly casein insulating paste is prepared from the raw material of casein in the milk, has the characteristics of no toxicity, no taste, easy degradation, no pollution to environment, and the like, can be used for replacing chemically synthesized glue of epoxy resins, urea-formaldehyde resin adhesives, amino resins, polyvinyl alcohols, and the like, and can be widely applied to fields of electric appliances, laminated plates and the like.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to an environment-friendly casein insulating adhesive produced from casein. Background technique [0002] At present, epoxy resin glue, silicone resin glue, nitrile-phenolic resin glue, urea-formaldehyde resin glue, amino resin and white latex are mainly used in the field of domestic insulating glue and laminated board. Resin glue and amino resin, the specific process is as follows: ①In neutral or weakly alkaline (pH=7~8) medium, urea and formaldehyde undergo methylolation reaction (addition reaction), which can produce Hydroxymethylurea. ②Carry out polycondensation reaction under acidic conditions. When the molecular weight reaches a certain level, adjust the pH value of the reaction solution to 8-9, and cool down to normal temperature to obtain the initial condensation liquid of urea-formaldehyde resin. Synthesize urea-formaldehyde resin under such strong acidic conditions The...

Claims

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Application Information

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IPC IPC(8): C09J4/02C09J4/06C09J11/04C09J11/06
Inventor 牛犇
Owner 甘肃省商业科技研究所有限公司
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