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A kind of water -decentralized glass fiber coating polymer and preparation method

A polymer and glass fiber technology, 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 achieve good dispersion effect and stability. , improve the overall performance, the effect of a wide range of applications

Active Publication Date: 2021-09-21
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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  • A kind of water -decentralized glass fiber coating polymer and preparation method
  • A kind of water -decentralized glass fiber coating polymer and preparation method
  • A kind of water -decentralized glass fiber coating polymer and preparation method

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preparation example Construction

[0062] 2. Preparation of modified micro-crosslinked urea-formaldehyde resin glue

[0063] (1) Raw material ratio of modified urea-formaldehyde resin glue

[0064] Wherein the molar ratio of the total amount of formaldehyde: urea: melamine: acrylamide used is 2:1.4:0.4:0.2.

[0065] (2) The formula of modified urea-formaldehyde resin is shown in the following table 2:

[0066] Table 2. Formula of modified urea-formaldehyde resin glue

[0067] 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

[0068] (3) Preparation process of modified urea-formaldehyde resin glue

[0069] 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 react for 30 minutes, then adjust its p...

Embodiment 1

[0071] 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):

[0072] 1. Recipe

[0073] The formula includes a core polymerization part, a shell polymerization part and a neutralized dispersed phase, and the raw material components include the following;

[0074] 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;

[0075] 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;

[0076] The neutralized ...

Embodiment 2

[0083] 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):

[0084] 1. Recipe

[0085] The formula includes a core polymerization part, a shell polymerization part and a neutralized dispersed phase, and the raw material components include the following;

[0086] 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;

[0087] 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;

[0088] The neutralized dispersed phase includes: 6.5 for N,N-dimethyletha...

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Abstract

The invention discloses a water-dispersed glass fiber coating polymer and a preparation method thereof. The glass fiber coating polymer aims to solve the problem of poor alkali resistance and storage stability of existing modified urea-formaldehyde resins, and at the same time poor overall performance and cost performance technical problem; the glass fiber coating polymer raw material composition includes the following, by mass parts, the core polymerization part includes: acrylate monomer, acrylate hydrophilic functional monomer, initiator, multifunctional acrylic acid Ester derivatives; the shell polymerization part includes: acrylate monomers, acrylate hydrophilic functional monomers, carboxyl-containing acrylates and their derivatives, initiators, modified urea-formaldehyde resins; the neutralized dispersed phase includes : Neutralizer, water, solvent and plasticizer. This technical solution can effectively improve the water resistance, alkali resistance and storage stability of the glass fiber coating, and make it have both the performance advantages of urea-formaldehyde resin and acrylic resin, and it is very cost-effective, and at the same time improves the performance of the polymer. overall performance.

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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Patent Type & Authority Patents(China)
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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