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Preparation method of styrene-acrylic building emulsion

A styrene-acrylic building and emulsion technology, which is applied in the field of preparation of styrene-acrylic building emulsion, can solve the problems of elongation at break, tensile strength flexibility, poor elasticity, adverse effects on buildings, cracks on the wall surface, etc., and achieve excellent Flexibility, long service life, good environmental protection effect

Inactive Publication Date: 2021-08-06
广东金万联防水材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the existing styrene-acrylic architectural emulsion mainly has defects such as elongation at break, tensile strength, flexibility, and poor elasticity. When long-term problems are affected, the surface of the building wall usually has cracks, etc.
It not only affects the appearance, but more importantly, it has adverse effects or even harms the buildings.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] In the embodiment of the present invention, a kind of preparation method of styrene-acrylic building emulsion selects a reactor with pre-emulsification cylinder as processing equipment; comprises the following steps:

[0027] S1: Pre-emulsification, select pre-emulsion raw materials, calculated according to the percentage of pre-emulsion raw materials, including: deionized water 13%-15%, 2A1 emulsifier 1.6%-1.8%, TO40 emulsifier 0.4%-0.5%, styrene 21%-23%, butyl acrylate 60%-65%, acrylamide 1.6%-1.8%, acrylic acid 0.1%-0.2%;

[0028] Add deionized water, 2A1 emulsifier, and TO40 emulsifier into the pre-emulsification tank, stir and mix for 20 minutes, then add styrene, butyl acrylate, and acrylamide in sequence and stir for 20 minutes to obtain a pre-emulsion for later use;

[0029] S2: Reaction processing, selection of reaction raw materials, calculated according to the percentage of pre-reaction raw materials: deionized water 87%-90%, 2A1 emulsifier 0.004%-0.006%, COP...

Embodiment

[0045] In this embodiment: the raw material gross weight that adopts is 4.864 tons;

[0046] S1: Pre-emulsification, select pre-emulsion raw materials, calculated according to the percentage of pre-emulsion raw materials, including: deionized water 420kg, 2A1 emulsifier 53kg, TO40 emulsifier 13.25kg, styrene 681kg, butyl acrylate 1910kg, acrylamide 53kg, Acrylic acid 4kg;

[0047] Add deionized water, 2A1 emulsifier, and TO40 emulsifier into the pre-emulsification tank, stir and mix for 20 minutes, then add styrene, butyl acrylate, and acrylamide in sequence and stir for 20 minutes to obtain a pre-emulsion for later use;

[0048] S2: Reaction processing, selection of reaction raw materials, calculated according to the percentage of pre-reaction raw materials: deionized water 960kg, 2A1 emulsifier 0.5kg, COPS-2 emulsifier 0.58kg, seed emulsion 98.1kg, initial initiator NPS 10.6kg , Add 3.54kg of initiator NPS and 30kg of flushing water dropwise;

[0049] Add deionized water, ...

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PUM

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Abstract

The invention discloses a preparation method of a styrene-acrylic building emulsion. The preparation method comprises the following steps: S1, pre-emulsification: adding deionized water, 2A1 emulsifier and TO40 emulsifier into a pre-emulsification cylinder, stirring and mixing for 20 minutes, sequentially adding styrene, butyl acrylate and acrylamide, and stirring for 20 minutes to obtain a pre-emulsion for later use; s2, reaction processing: adding deionized water, 2A1 emulsifier and COPS-2 emulsifier into a reaction kettle, and heating the reaction kettle at the same time; when the temperature reaches 85 DEG C, quickly pouring a seed-taking emulsion and an initial initiator, reacting for 15 minutes, and starting to dropwise add the pre-emulsion in the pre-emulsification cylinder; the styrene-acrylic building emulsion provided by the invention has higher solid content, can obtain thicker dry film thickness during use, has longer service life, also has the advantages of excellent flexibility, adhesive property, adhesive force, alkali resistance, water resistance, scrubbing resistance, elongation at break, tensile strength and the like, and has good market prospects.

Description

technical field [0001] The invention relates to the technical field of styrene-acrylic emulsion, and relates to a preparation method of styrene-acrylic architectural emulsion. Background technique [0002] At present, the existing styrene-acrylic architectural emulsion mainly has defects such as elongation at break, tensile strength, flexibility, and poor elasticity. When long-term problems are affected, cracks and the like usually occur on the surface of the building wall. It not only affects the appearance, but more importantly, it has an adverse effect or even harm to the building. Contents of the invention [0003] In order to achieve the above object, the present invention adopts the following technical solutions: [0004] A kind of preparation method of styrene-acrylic building emulsion selects a reactor with pre-emulsification cylinder as processing equipment; comprises the following steps: [0005] S1: Pre-emulsification, select pre-emulsion raw materials, calcu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F212/08C08F220/56C08F220/06
CPCC08F220/1804C08F212/08C08F220/56C08F220/06
Inventor 朱俊平郭桂浩
Owner 广东金万联防水材料有限公司