Wood adhesive taking starch as raw material
A technology of wood adhesives and raw materials, applied in the direction of adhesives, adhesive types, grafted polymer adhesives, etc., can solve the problems of production and use performance, water resistance, bonding strength and stability that have not been better improved and other problems, to achieve the effect of strong adhesion and improved stability
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Embodiment 1
[0027] [Example 1] A wood adhesive using starch as a raw material, comprising the following raw material formula components in parts by mass: 80 parts of starch, 1 part of buffer, 12 parts of oxidizing agent, 5 parts of polyvinyl alcohol, 10 parts of methylol Acrylamide, 10 parts bentonite, 15 parts borax, 5 parts agar, 15 parts glycerin, 150 parts water, 1 part sodium hydroxide.
[0028] The preparation steps are as follows:
[0029] (1) Add 100 parts of water into the stirring tank first, and raise the temperature to 60°C;
[0030](2) Add 80 parts of starch, 1 part of buffer, 12 parts of oxidizing agent, 5 parts of polyvinyl alcohol, 1 part of sodium hydroxide, the reaction temperature is 65°C, the reaction time is 1.5h, the pH of the reaction solution is 8.5, and stir well;
[0031] (3) Add 10 parts of methylolacrylamide, 15 parts of borax, 5 parts of agar, and 15 parts of glycerin, stir well, the reaction temperature is 60°C, and the reaction time is 1h;
[0032] (4) Coo...
Embodiment 2
[0034] [Example 2] A wood adhesive using starch as raw material, comprising the following raw material formula components in parts by mass: 90 parts of starch, 3 parts of buffer, 16 parts of oxidizing agent, 10 parts of polyvinyl alcohol, 8 parts of hydroxymethyl Acrylamide, 9 parts bentonite, 15 parts borax, 6 parts agar, 10 parts glycerin, 200 parts water, 1 part sodium hydroxide.
[0035] The preparation steps are as follows:
[0036] (1) First add 150 parts of water to the stirring tank and raise the temperature to 65°C;
[0037] (2) Add 90 parts of starch, 3 parts of buffer, 16 parts of oxidizing agent, 10 parts of polyvinyl alcohol, 1 part of sodium hydroxide, the reaction temperature is 70°C, the reaction time is 2 hours, the reaction solution pH is 9.0, and stir well;
[0038] (3) Add 8 parts of methylolacrylamide, 15 parts of borax, 6 parts of agar, 10 parts of glycerin, stir well, the reaction temperature is 60°C, and the reaction time is 1.2h;
[0039] (4) Cool do...
Embodiment 3
[0041] [Example 3] A wood adhesive using starch as a raw material, comprising the following raw material formula components in parts by mass: 100 parts of starch, 3 parts of buffer, 18 parts of oxidizing agent, 8 parts of polyvinyl alcohol, 10 parts of hydroxymethyl Acrylamide, 8 parts bentonite, 18 parts borax, 5 parts agar, 12 parts glycerin, 300 parts water, 2 parts sodium hydroxide.
[0042] The preparation steps are as follows:
[0043] (1) Add 200 parts of water into the stirring tank first, and raise the temperature to 75°C;
[0044] (2) Add 100 parts of starch, 3 parts of buffer, 18 parts of oxidizing agent, 8 parts of polyvinyl alcohol, 2 parts of sodium hydroxide, the reaction temperature is 75 ° C, the reaction time is 2.5 hours, the reaction solution pH is 9.5, and stir well;
[0045] (3) Add 10 parts of methylolacrylamide, 18 parts of borax, 5 parts of agar, 12 parts of glycerin, stir well, the reaction temperature is 65°C, and the reaction time is 1.5h;
[0046...
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