Formaldehyde-free adhesive for furniture as well as preparation method thereof
A technology of adhesives and formaldehyde, which is applied in the field of formaldehyde-free adhesives for furniture and its preparation, can solve the problems of formaldehyde volatilization, health damage of residents, and exceeding standards, and achieve the effect of enhancing strength
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Embodiment 1
[0026] A formaldehyde-free adhesive for furniture, comprising the following components by weight percentage:
[0027] Cornstarch 25%
[0028] Acid Alpha-Amylase 3%
[0029] Guar Gum 4%
[0030] Diatomaceous earth 6%
[0031] Bamboo fiber 0.7%
[0032] Corning Hydropalat 875 0.2%
[0033] Beta-cyclodextrin 7%
[0034] water balance.
[0035] A preparation method of formaldehyde-free adhesive for furniture, comprising the following steps:
[0036] A. First adjust the starch with water to a solution with a concentration of 40%, ultrasonically treat it at 65°C for 17min, the ultrasonic frequency is 25kHz, the ultrasonic power is 125w, and filter;
[0037] B. Add acid α-amylase and adjust the pH value to 4.0-4.5, enzymolysis for 30 minutes;
[0038] C. Adjust the pH value to 7.0-7.5, add dispersant and β-cyclodextrin, and stir for 30 minutes;
[0039] D. Add the remaining raw materials and stir for 55 minutes.
Embodiment 2
[0041] A formaldehyde-free adhesive for furniture, comprising the following components by weight percentage:
[0042] Cornstarch 20%
[0043] Acid Alpha-Amylase 5%
[0044] Guar Gum 2%
[0045] Diatomaceous earth 8%
[0046] Bamboo fiber 0.5%
[0047] Corning Hydropalat 875 0.3%
[0048] Beta-Cyclodextrin 10%
[0049] water balance.
[0050] A preparation method of formaldehyde-free adhesive for furniture, comprising the following steps:
[0051] A. First adjust the starch water to a solution with a concentration of 35%, ultrasonically treat it at 70°C for 15min, the ultrasonic frequency is 30kHz, the ultrasonic power is 120w, and filter;
[0052] B. Add acid α-amylase and adjust the pH value to 4.0-4.5, enzymatic hydrolysis for 35 minutes;
[0053] C. Adjust the pH value to 7.0-7.5, add dispersant and β-cyclodextrin, and stir for 15 minutes;
[0054] D. Add the remaining raw materials and stir for 60 minutes.
Embodiment 3
[0056] A formaldehyde-free adhesive for furniture, comprising the following components by weight percentage:
[0057] Cornstarch 30%
[0058] Acid Alpha-Amylase 2%
[0059] Guar Gum 5%
[0060] Diatomaceous earth 3%
[0061] Bamboo fiber 1%
[0062] Corning Hydropalat 875 0.1%
[0063] Beta-Cyclodextrin 3%
[0064] water balance.
[0065] A preparation method of formaldehyde-free adhesive for furniture, comprising the following steps:
[0066] A. First adjust the starch water to a solution with a concentration of 45%, ultrasonically treat it at 60°C for 20 minutes, the ultrasonic frequency is 20kHz, and the ultrasonic power is 150w, and filter;
[0067] B. Add acid α-amylase and adjust the pH value to 4.0-4.5, enzymolysis for 25 minutes;
[0068] C. Adjust the pH value to 7.0-7.5, add dispersant and β-cyclodextrin, and stir for 25 minutes;
[0069] D. Add the remaining raw materials and stir for 45 minutes.
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