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Water-dispersible glass fiber coating polymer and preparation method thereof

A polymer and glass fiber technology, which is applied in the field of water-dispersed glass fiber coating polymer and its preparation, can solve the problems of poor alkali resistance, poor storage stability, poor overall performance and cost performance, and achieves good water solubility and good performance. The effect of water resistance and good polymerization stability

Active Publication Date: 2019-06-28
九江华源新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the deficiencies of the prior art, the object of the present invention is to provide a water-dispersed glass fiber coating polymer and its preparation method, the glass fiber coating polymer and its preparation method are aimed at solving the problem of alkali resistance of existing modified urea-formaldehyde resins. The performance and storage stability are poor, and the overall performance and cost performance are poor; through this technical solution, the water resistance, alkali resistance and storage stability of the glass fiber coating can be effectively improved, and it has both urea-formaldehyde resin and The performance benefits of acrylate resins at a cost-effective manner while enhancing the overall performance of the polymer

Method used

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  • Water-dispersible glass fiber coating polymer and preparation method thereof
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  • Water-dispersible glass fiber coating polymer and preparation method thereof

Examples

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preparation example Construction

[0061] 2. Preparation of modified micro-crosslinked urea-formaldehyde resin glue

[0062] (1) Raw material ratio of modified urea-formaldehyde resin glue

[0063] Wherein the molar ratio of the total amount of formaldehyde: urea: melamine: acrylamide used is 2:1.4:0.4:0.2.

[0064] (2) The formula of modified urea-formaldehyde resin is shown in the following table 2:

[0065] Table 2. Formula of modified urea-formaldehyde resin glue

[0066] raw material name

Dosage (kg)

formaldehyde

171.5

Urea (1)

67.2

Urea (2)

16.8

Acrylamide

14

Melamine

50.4

20% NaOH

Appropriate amount

15% hydrogen chloride

Appropriate amount

Methanol

5

mixed solvent

some

[0067] (3) Preparation process of modified urea-formaldehyde resin glue

[0068] Add the first batch of formaldehyde into the 500L reactor, stir, and adjust its pH to 8.5-9, then add the first batch of urea, heat to 90°C and...

Embodiment 1

[0070] A kind of preparation method of urea-formaldehyde resin modified acrylate self-crosslinking water dispersion system polymer comprises the following steps (the following proportioning is weight part, unit is kilogram):

[0071] 1. Recipe

[0072] The formula includes a core polymerization part, a shell polymerization part and a neutralized dispersed phase, and the raw material components include the following;

[0073] The core polymerization part includes: 18 for methyl methacrylate, 35 for hydroxyethyl acrylate, 22 for butyl acrylate, 35 for ethyl acrylate, 2 for N-(N-butoxymethyl)acrylamide, Acrylic acid glycidyl ether is 2, azobisisobutyronitrile is 2;

[0074] The shell polymerization part includes: 8 for acrylonitrile, 18 for hydroxypropyl acrylate, 10 for methyl methacrylate, 16 for tert-butyl methacrylate, 12 for butyl acrylate, 10 for methacrylic acid, and 10 for azobis Isobutyronitrile is 1.1, modified urea-formaldehyde resin is 74;

[0075] The neutralized ...

Embodiment 2

[0082] A kind of preparation method of urea-formaldehyde resin modified acrylate self-crosslinking water dispersion system polymer comprises the following steps (the following proportioning is weight part, unit is kilogram):

[0083] 1. Recipe

[0084] The formula includes a core polymerization part, a shell polymerization part and a neutralized dispersed phase, and the raw material components include the following;

[0085] The core polymerization part includes: 35 for styrene, 41 for hydroxyethyl methacrylate, 22 for butyl acrylate, 6 for tert-methyl methacrylate, 24 for isooctyl methacrylate, and 24 for glycidyl methacrylate 2, di-tert-butyl peroxide is 3;

[0086] The shell polymerization part includes: 18 for hydroxyethyl methacrylate, 10 for methyl methacrylate, 15 for butyl acrylate, 5 for acrylic acid, 5 for itaconic acid, 2 for di-tert-butyl peroxide, modified Urea-formaldehyde resin is 42;

[0087] The neutralized dispersed phase includes: 6.5 for N,N-dimethyletha...

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Abstract

The invention discloses a water-dispersible glass fiber coating polymer and a preparation method thereof. The glass fiber coating polymer aims at solving the technical problems of poor alkaline resistance, poor storage stability, poor integral performance and poor cost performance of existing modified urea formaldehyde resin. The glass fiber coating polymer is prepared from the following raw material ingredients in parts by mass: a core-polymerization part, including acrylate monomer, acrylate hydrophilic functional monomer, initiator and polyfunctional acrylate derivatives, a shell-polymerization part, including acrylate monomer, acrylate hydrophilic functional monomer, carboxyl-containing acrylate and derivatives thereof, initiator and modified urea formaldehyde resin, a neutralizing dispersion phase, including a neutralizing agent, water, solvent and plasticizer. According to the technical scheme, the water resistance, alkaline resistance and storage stability of a glass fiber coating can be effectively improved, the coating has performance advantages of urea formaldehyde resin and acrylate resin and extremely has cost performance, and the integral performance of polymer can beimproved.

Description

technical field [0001] The invention belongs to the field of paint, coating, bonding and coating, and in particular relates to a water-dispersed glass fiber coating polymer and a preparation method thereof. Background technique [0002] Urea-formaldehyde resin, also known as urea-formaldehyde resin (UF resin), is the polycondensation of urea and formaldehyde under the action of a catalyst (alkaline or acidic catalyst) into an initial urea-formaldehyde resin, and then under the action of a curing agent or an auxiliary agent, it forms an insoluble, insoluble resin. Melted thermosetting resin. The color of cured urea-formaldehyde resin is lighter than that of phenolic resin, translucent, resistant to weak acids and alkalis, good insulation performance, excellent wear resistance, and cheap. It is the most used variety in adhesive coatings, especially In the manufacture of various wood-based panels in the wood processing industry, urea-formaldehyde resin and its modified product...

Claims

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Application Information

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IPC IPC(8): C08F220/18C08F220/14C08F220/20C08F220/32C08F220/58C08F220/46C08F220/06C08F283/00C08F265/04C08F212/08C08F222/02C08F218/08C08F218/10C08F220/56C08G12/34C08G12/38C03C25/34C09D151/08C09D151/00D06N3/12
Inventor 何余发江永波
Owner 九江华源新材料有限公司
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