A kind of soybean formaldehyde-free glue, PP film veneer composite floor and preparation method thereof
A composite floor, formaldehyde-free adhesive technology, applied in the field of flooring, can solve the problems of the product can not eliminate the release of free formaldehyde, the adhesion is not strong, the crack resistance of the impregnated paper veneer is poor, and the problem of low hot pressing efficiency, The effect of increasing water retention and increasing solid content
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0035] 100 parts of water, 200 parts of polyamidoamine-epichlorohydrin resin solution (solid content is 12.5%, pH 3.5, viscosity 35cP), 150 parts of 300 mesh defatted soybean flour, 60 parts of 2500 mesh aluminum hydroxide, 30 parts of flour , 1.5 parts of polysorbate-80, add to the reaction kettle one after another, and stir for 2 hours at 80°C;
[0036] This example provides a method for preparing soybean gum without formaldehyde, which includes the step of stirring the recipe at 80°C for 2 to 3 hours. The function is to denature soybean protein, thereby prolonging the storage time of soybean gum. Glue storage time> 30 days.
Embodiment 2
[0038] 100 parts of water, 200 parts of polyamidoamine-epichlorohydrin resin solution (solid content is 12.5%, pH 3.5, viscosity 35cP), 150 parts of 300 mesh defatted soybean flour, 60 parts of 2500 mesh aluminum hydroxide, 30 parts of flour Add them to the reaction kettle one after another, and stir for 2 hours at 80°C.
Embodiment 3
[0040] Take the soybean gum, urea-formaldehyde gum on the market and the soybean formaldehyde-free gum obtained in Example 1 for performance testing. The performance includes solid content, cost, hot pressing time, and opening time. The results are shown in Table 1;
[0041] Table 1 Performance test table
[0042] product Solid content Cost (yuan / ton) Hot pressing time s / mm Opening time (h) commercially available soybean gum ＜35％ 4300 (50+70) 1h Urea-formaldehyde glue 60％ 3700 60 more than 2h Example 1 47％ 3200 (50+20) more than 2h Example 2 47％ 3100 (50+20) less than 0.5h
[0043] The "solid content" here refers to: the mass percentage of the remaining part of the adhesive after drying under specified conditions; the "hot pressing time" here refers to: when used to make the base material, the After cold-pressing the glue-coated billet, it is sent to the hot press. When the press closes and reaches the process pressu...
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More