E0-grade melamine modified urea-formaldehyde resin adhesive, and preparation method and application thereof
A technology of urea-formaldehyde resin glue and melamine, which is applied in adhesives, aldehyde/ketone condensation polymer adhesives, adhesive types, etc., can solve the problem of unstable formaldehyde emission, insufficient melamine reaction, and poor slab pre-compression in plywood and other problems, to achieve the effect of easy implementation, low price and high bonding strength
A technology of urea-formaldehyde resin glue and melamine, which is applied in adhesives, aldehyde/ketone condensation polymer adhesives, adhesive types, etc., can solve the problem of unstable formaldehyde emission, insufficient melamine reaction, and poor slab pre-compression in plywood and other problems, to achieve the effect of easy implementation, low price and high bonding strength
CN102604573AInactive Publication Date: 2012-07-25BEIHUA UNIV
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Embodiment 4-6
[0038] Embodiment 4-6: See Table 2 for the raw materials and consumptions used for preparing the composite curing agent:
[0039] Table 2
[0040]
[0041] Preparation method: Taking Example 4 as an example, other examples are the same as Example 4 except for the amount of raw materials.
[0042] Add 200kg of ammonium chloride, 200kg of oxalic acid, 450kg of citric acid, and 100kg of tartaric acid into 500kg of water at 40-50°C in sequence, and stir for 30 minutes to disperse evenly to obtain a composite curing agent.
[0043] Preparation of E0 grade melamine modified urea-formaldehyde resin adhesive:
[0044] The raw materials are as follows: 100 parts by mass of E0 grade melamine modified urea-formaldehyde resin, 15-25 parts by mass of composite filler and 3-5 parts by mass of composite curing agent, slowly add the composite filler into E0-MUF resin, and stir After 15 minutes, add composite curing agent, stir for 20 minutes, and make E0 grade melamine modified urea-for...
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The invention relates to an E0-grade melamine modified urea-formaldehyde resin adhesive, and a preparation method and application thereof. The E0-grade melamine modified urea-formaldehyde resin adhesive is characterized by comprising an E0-grade melamine modified urea-formaldehyde resin, a composite curing agent and a composite filler, wherein the E0-grade melamine modified urea-formaldehyde resin is prepared from the following raw materials in parts by mass: 100 parts of formaldehyde, 0.1-0.5 part of polyvinyl alcohol, 100-200ml of basic catalyst and 200-400ml of acidic catalyst; the mol ratio of the formaldehyde to the urea+melamine (F / (U+M)) is equal to 0.80-0.98; the composite curing agent is prepared from the following raw materials in parts by mass: 200-250 parts of ammonium chloride, 150-200 parts of oxalic acid, 400-450 parts of citric acid, 100-150 parts of tartaric acid and 500-800 parts of water; and the composite filler is prepared from the following raw materials in parts by mass: 60 parts of industrial flour, 20 parts of 800-mesh light calcium carbonate and 20 parts of 800-mesh wood meal. The E0-grade melamine modified urea-formaldehyde resin adhesive is used for gluing plates. The E0-grade melamine modified urea-formaldehyde resin adhesive has the advantages of low free formaldehyde content, low cost, favorable precompression performance, good gluing performance and the like.
Description
technical field [0001] The invention relates to an E0 grade melamine-modified urea-formaldehyde resin adhesive, which is used for pressing multilayer plywood, and belongs to the field of wood science and technology in forestry engineering. Background technique [0002] At present, the consumption of urea-formaldehyde resin adhesives accounts for about 2 / 3 of the total consumption of synthetic adhesives in my country. With the implementation of the mandatory standard GB18580-2001 on "Formaldehyde Emissions in Wood-based Panels and Their Products for Interior Decoration Materials" officially promulgated by the state in January 2002, the market demand for environmentally friendly urea-formaldehyde adhesives has shown explosive growth. From a technical point of view, my country has developed E 2 Level product production technology, E 1 The production technology of high-grade products is not very perfect. In order to seek production and market stability, many well-known domesti...
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Patent Timeline
25 Jul 2012
Publication
CN102604573A
- IPC
- C09J161/30; C08G12/38
- Inventors
- 时君友