Urea-formaldehyde resin additive, urea-formaldehyde resin containing the same and preparation method thereof

Abstract

The invention provides an additive with urea formaldehyde, a preparation method and a urea formaldehyde resin adhesive. The additive is provided by the invention. The raw material of the additive is comprised of the dispersion medium, the dried egg white of the degreased bean and the complexing agent, the weight ratio of the raw material is: 70-80 of dispersion medium, 20-35 of dried egg white of the degreased bean, 1-3 of complexing agent, the complexing agent is consisted of the aluminium sulphate and the zirconium carbonate with the weight ratio of 0.4-2.4:1. The additive provided by the invention contains dried egg white of the degreased bean, and then both the bond strength of the prepared veneer is increased and the formaldehyde emission of the preparing artificial slabs is effective decreased when adding the additive into the urea formaldehyde.

Description

technical field

[0001] The invention relates to an additive for an adhesive, an adhesive based on an organic polymer compound containing the additive and a preparation method thereof, in particular to an additive for a urea-formaldehyde resin for wood-based panels, a urea-formaldehyde resin containing the additive and its preparation method. Background technique

[0002] Over the past 30 years, my country's wood industry has developed rapidly. In 2006, the total output of wood-based panels was 74.28 million cubic meters, including 27.29 million cubic meters of plywood and 11.55 million cubic meters of blockboard. The total output of wood-based panels, plywood, and furniture all rank first in the world.

[0003] Since formaldehyde-based adhesives are generally used in the production of wood-based panels, especially urea-formaldehyde resin adhesives, there is a problem of formaldehyde release in wood-based panels and their products (furniture, wooden floors, interior wood de...

Examples

Embodiment 1

[0032] The additive of urea-formaldehyde resin of the present invention is produced according to the following steps:

[0033] 1) Prepare materials according to the following weight ratio:

[0034] Demineralized water 70kg

[0035] Defatted Soy Protein Powder 20kg

[0036] Aluminum sulfate 0.8kg

[0037] Zirconium carbonate 0.5kg

[0038] 2) Add all the defatted soy protein powder into the reaction kettle equipped with demineralized water, and stir evenly;

[0039] 3) heating up to 40°C, and keeping the temperature for 6 hours;

[0040] 4) Then lower the temperature to 30° C., add aluminum sulfate and zirconium carbonate to the reaction kettle in sequence, and stir evenly to prepare the soy protein additive.

[0041] Among them, the performance indexes of soybean protein additives are shown in Table 1.

[0042] The modified urea-formaldehyde resin binder in this embodiment is formulated as follows: the soy protein additive and the above-mentioned urea-formaldehyde resin ...

Embodiment 2

[0045] The additive of urea-formaldehyde resin of the present invention is produced according to the following steps:

[0046] 1) Prepare materials according to the following weight ratio:

[0047] Demineralized water 80kg

[0048] Defatted Soy Protein Powder 35kg

[0049] Aluminum sulfate 1.0kg

[0050] Zirconium Carbonate 1.5kg

[0051] 2) Add all the defatted soy protein powder into the reaction kettle equipped with demineralized water, and stir evenly;

[0052] 3) Heating to 50°C, and keeping it warm for 3 hours;

[0053] 4) Then lower the temperature to 30° C., add aluminum sulfate and zirconium carbonate to the reaction kettle in sequence, and stir evenly to prepare the soy protein additive.

[0054] Among them, the performance indexes of soybean protein additives are shown in Table 1.

[0055] The modified urea-formaldehyde resin binder in this embodiment is formulated as follows: the soy protein additive and the above-mentioned urea-formaldehyde resin are uniform...

Embodiment 3

[0058] The additive of urea-formaldehyde resin of the present invention is produced according to the following steps:

[0059] 1) Prepare materials according to the following weight ratio:

[0060] Demineralized water 75kg

[0061] Defatted Soy Protein Powder 30kg

[0062] Aluminum sulfate 1.1kg

[0063] Zirconium Carbonate 1.2kg

[0064] 2) Add all the defatted soy protein powder into the reaction kettle equipped with demineralized water, and stir evenly;

[0065] 3) Heating to 60°C, and keeping it warm for 5 hours;

[0066] 4) Then lower the temperature to 30° C., add aluminum sulfate and zirconium carbonate to the reaction kettle in sequence, and stir evenly to prepare the soy protein additive.

[0067] Among them, the performance indexes of soybean protein additives are shown in Table 1.

[0068] In this embodiment, the modified urea-formaldehyde resin binder is formulated as follows: the soy protein additive and the above-mentioned urea-formaldehyde resin are unifor...

technical field

[0001] The invention relates to an additive for an adhesive, an adhesive based on an organic polymer compound containing the additive and a preparation method thereof, in particular to an additive for a urea-formaldehyde resin for wood-based panels, a urea-formaldehyde resin containing the additive and its preparation method. Background technique

[0002] Over the past 30 years, my country's wood industry has developed rapidly. In 2006, the total output of wood-based panels was 74.28 million cubic meters, including 27.29 million cubic meters of plywood and 11.55 million cubic meters of blockboard. The total output of wood-based panels, plywood, and furniture all rank first in the world.

[0003] Since formaldehyde-based adhesives are generally used in the production of wood-based panels, especially urea-formaldehyde resin adhesives, there is a problem of formaldehyde release in wood-based panels and their products (furniture, wooden floors, interior wood de...

Examples

Embodiment 1

[0032] The additive of urea-formaldehyde resin of the present invention is produced according to the following steps:

[0033] 1) Prepare materials according to the following weight ratio:

[0034] Demineralized water 70kg

[0035] Defatted Soy Protein Powder 20kg

[0036] Aluminum sulfate 0.8kg

[0037] Zirconium carbonate 0.5kg

[0038] 2) Add all the defatted soy protein powder into the reaction kettle equipped with demineralized water, and stir evenly;

[0039] 3) heating up to 40°C, and keeping the temperature for 6 hours;

[0040] 4) Then lower the temperature to 30° C., add aluminum sulfate and zirconium carbonate to the reaction kettle in sequence, and stir evenly to prepare the soy protein additive.

[0041] Among them, the performance indexes of soybean protein additives are shown in Table 1.

[0042] The modified urea-formaldehyde resin binder in this embodiment is formulated as follows: the soy protein additive and the above-mentioned urea-formaldehyde resin ...

Embodiment 2

[0045] The additive of urea-formaldehyde resin of the present invention is produced according to the following steps:

[0046] 1) Prepare materials according to the following weight ratio:

[0047] Demineralized water 80kg

[0048] Defatted Soy Protein Powder 35kg

[0049] Aluminum sulfate 1.0kg

[0050] Zirconium Carbonate 1.5kg

[0051] 2) Add all the defatted soy protein powder into the reaction kettle equipped with demineralized water, and stir evenly;

[0052] 3) Heating to 50°C, and keeping it warm for 3 hours;

[0053] 4) Then lower the temperature to 30° C., add aluminum sulfate and zirconium carbonate to the reaction kettle in sequence, and stir evenly to prepare the soy protein additive.

[0054] Among them, the performance indexes of soybean protein additives are shown in Table 1.

[0055] The modified urea-formaldehyde resin binder in this embodiment is formulated as follows: the soy protein additive and the above-mentioned urea-formaldehyde resin are uniform...

Embodiment 3

[0058] The additive of urea-formaldehyde resin of the present invention is produced according to the following steps:

[0059] 1) Prepare materials according to the following weight ratio:

[0060] Demineralized water 75kg

[0061] Defatted Soy Protein Powder 30kg

[0062] Aluminum sulfate 1.1kg

[0063] Zirconium Carbonate 1.2kg

[0064] 2) Add all the defatted soy protein powder into the reaction kettle equipped with demineralized water, and stir evenly;

[0065] 3) Heating to 60°C, and keeping it warm for 5 hours;

[0066] 4) Then lower the temperature to 30° C., add aluminum sulfate and zirconium carbonate to the reaction kettle in sequence, and stir evenly to prepare the soy protein additive.

[0067] Among them, the performance indexes of soybean protein additives are shown in Table 1.

[0068] In this embodiment, the modified urea-formaldehyde resin binder is formulated as follows: the soy protein additive and the above-mentioned urea-formaldehyde resin are unifor...