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Plant non-toxic adhesive used for indoor decoration and preparation method thereof

A technology for interior decoration and adhesives, applied in the direction of monocarboxylic acid ester copolymer adhesives, unsaturated alcohol copolymer adhesives, adhesive types, etc., can solve the problems of high production cost and complicated preparation process, and achieve Low production cost, simple preparation process, and improved water resistance

Inactive Publication Date: 2012-10-03
王钱生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of this invention is relatively complicated, wherein the starch needs to be modified by three stages, and the reinforcing agent also needs to be modified by two stages, and the production cost is also high, so it has not been popularized and applied.

Method used

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  • Plant non-toxic adhesive used for indoor decoration and preparation method thereof
  • Plant non-toxic adhesive used for indoor decoration and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Adhesive formulation:

[0033] Modified starch glue with a solid content of 20% 60Kg, polyvinyl alcohol 2Kg, ethylene glycol 0.2Kg, vinyl acetate-ethylene copolymer emulsion (ethylene content 14-18%, w / w) 30Kg, rosin solution 3Kg, calcium carbonate 10Kg , water 10Kg, Tween-800.2Kg.

[0034] Preparation:

[0035] 1) Preparation of modified starch glue: Mix 10Kg of oxidized tapioca starch and 90Kg of pregelatinized tapioca starch, add to 40°C water under stirring, adjust the pH value to 5 with citric acid, raise the temperature to 55°C, and keep it warm for 30 minutes. Solid content is the modified starch glue of 20%, takes out 60Kg for subsequent use;

[0036] The preparation of rosin solution: take the ethanol that volume concentration is 100% as solvent, add rosin powder to make saturated solution, take out 3Kg saturated solution for subsequent use;

[0037] 2) Put polyvinyl alcohol in water, raise the temperature to 90°C to completely dissolve the polyvinyl alcohol...

Embodiment 2

[0041] Adhesive formulation:

[0042] Modified starch glue with a solid content of 25% 50Kg, polyvinyl alcohol 6Kg, ethylene glycol 0.3Kg, vinyl acetate-ethylene copolymer emulsion (ethylene content 14-18%, w / w) 15Kg, rosin solution 2Kg, calcium carbonate 8Kg , water 30Kg, Tween-800.4Kg, n-butanol 0.3Kg.

[0043] Preparation:

[0044] 1) Prepare modified starch glue: Mix 30Kg of oxidized tapioca starch and 70Kg of pregelatinized tapioca starch, add to 35°C water under stirring, adjust the pH value to 6 with hydrochloric acid, raise the temperature to 75°C, and keep it warm for 20 minutes. Content is the modified starch glue of 25%, takes out 50Kg for subsequent use;

[0045] Preparation of rosin solution: take ethanol with a volume concentration of 98% as a solvent, add rosin powder to make a saturated solution, and take out 2Kg of the saturated solution for subsequent use;

[0046] 2) Put polyvinyl alcohol in water, raise the temperature to 95°C to dissolve the polyvinyl a...

Embodiment 3

[0050] Adhesive formulation:

[0051] Modified starch glue with a solid content of 20% 75Kg, polyvinyl alcohol 4Kg, ethylene glycol 0.4Kg, vinyl acetate-ethylene copolymer emulsion (ethylene content 14-18%, w / w) 10Kg, rosin solution 4Kg, calcium carbonate 3Kg, water 20Kg, Tween-800.5Kg, sodium benzoate 0.08Kg.

[0052] Preparation:

[0053] 1) Prepare modified starch glue: Mix 25Kg of oxidized tapioca starch and 75Kg of pregelatinized tapioca starch, add to 45°C water under stirring, adjust the pH value to 7 with hydrochloric acid, raise the temperature to 70°C, and keep it warm for 25 minutes. Content is the modified starch glue of 20%, takes out 75Kg for subsequent use;

[0054] The preparation of rosin solution: take the ethanol that volume concentration is 95% as solvent, add rosin powder and make saturated solution, take out 4Kg saturated solution for subsequent use;

[0055] 2) Put polyvinyl alcohol in water, raise the temperature to 93°C to completely dissolve the po...

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Abstract

The invention discloses a plant non-toxic adhesive which is mainly prepared from the following raw materials in parts by weight: 50-75 parts of modified starch adhesive, 2-6 parts of polyvinyl alcohol, 0.2-0.5 parts of ethylene glycol, 10-30 parts of vinyl acetate-ethylene copolymer emulsion, 2-5 parts of rosin emulsion, 3-12 parts of calcium carbonate, 10-30 parts of water and 0.2-0.5 part of emulsifier. The preparation method of the plant non-toxic adhesive comprises the following steps: firstly preparing the modified starch adhesive and the rosin emulsion, dissolving polyvinyl alcohol in water and then adding into the modified starch adhesive, adding ethylene glycol, carrying out reaction for 20-40 minutes, adding the vinyl acetate-ethylene copolymer emulsion, the rosin emulsion and the emulsifier, carrying out reaction for 20-40 minutes, cooling to room temperature, adding calcium carbonate, uniformly stirring, filtering and discharging to obtain the plant non-toxic adhesive. The adhesive disclosed by the invention is free of formaldehyde, has high adhesive strength and good water resistance, is still adherent to boil in water at 63 DEG C for 20 hours and is easy to construct. The preparation method has the advantages of simple process and low production cost, and can be widely used in the field of indoor decoration.

Description

technical field [0001] The invention relates to an adhesive, in particular to a plant non-toxic adhesive for interior decoration and a preparation method thereof. Background technique [0002] At present, the adhesives used for interior decoration in my country are mainly polyvinyl acetate emulsions, and the artificial panels used for interior decoration are mainly made of urea-formaldehyde resin or phenolic resin adhesives. The generation of free formaldehyde has a serious impact on the indoor environment and people's health. There are two main solutions: one is to reduce the amount of methanol or add a formaldehyde scavenger to reduce the content of free formaldehyde; the other is not to add formaldehyde, but choose other resins or additives to produce formaldehyde-free adhesives. In recent years, plant adhesives with starch as the main raw material are widely favored by consumers because they do not contain formaldehyde. This type of adhesive has the advantages of wide so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J103/02C09J129/04C09J131/04C09J193/04
Inventor 王钱生
Owner 王钱生
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