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Hydrophobic waterproof emulsion and preparation method thereof

A waterproof emulsion and hydrophobic technology, which is used in the addition of water repellents, textiles and papermaking, papermaking, etc. It can solve the problems that the water resistance effect cannot be maintained for a long time, the lotus leaf effect without hydrophobicity, and the system stability is poor, and achieves excellent hydrophobic effect. , high stability, simple and easy-to-control process

Pending Publication Date: 2022-04-12
佛山市桥通新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, most manufacturers currently use polyurethane emulsion, which not only has no hydrophobic lotus leaf effect, but also has poor system stability, and the water resistance effect cannot be maintained for a long time. In addition, most of the emulsifiers used are alkylphenols, which are harmful to the environment.

Method used

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  • Hydrophobic waterproof emulsion and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0025] This embodiment provides a method for preparing a hydrophobic and waterproof emulsion, comprising the following steps:

[0026] (1) 60kg water, 8kg emulsifier (BASF fatty alcohol polyoxyethylene ether sulfate sodium salt), 11kg natural wax, 10kg acrylic resin, 6kg palmitic acid (imported primary acid) are put into the emulsification kettle, heated and heated at 80r / The rotation speed of min is stirred to obtain the mixture a;

[0027] (2) Add 0.5 kg of defoamer (BYK024) to mixture a, start the homogenizer and emulsify for 2.5 hours at 80 r / min to obtain mixture b;

[0028] (3) Add 0.1kg preservative (OIT-45) to mixture b, and use DMEA and terpolymeric acid to adjust the pH of the emulsification system to 6, and obtain the hydrophobic and waterproof emulsion after discharging.

Embodiment 2

[0030] This embodiment provides a method for preparing a hydrophobic and waterproof emulsion, comprising the following steps:

[0031] (1) 58kg water, 8kg emulsifier (BASF fatty alcohol polyoxyethylene ether sulfate sodium salt), 10kg natural wax, 12kg acrylic resin, 6kg palmitic acid (imported primary acid) are put into the emulsification kettle, heated and heated at 100r / The rotation speed of min is stirred to obtain the mixture a;

[0032] (2) Add 0.8 kg of defoamer (BYK024) to mixture a, start the homogenizer and emulsify for 2 hours at 100 r / min to obtain mixture b;

[0033] (3) Add 0.15kg of preservative (OIT-45) to the mixture b, and adjust the pH of the emulsification system to 6.5 with DMEA and terpolymeric acid, and obtain the hydrophobic and waterproof emulsion after discharging.

Embodiment 3

[0035] This embodiment provides a method for preparing a hydrophobic and waterproof emulsion, comprising the following steps:

[0036] (1) 55kg water, 8kg emulsifier (BASF fatty alcohol polyoxyethylene ether sulfate sodium salt), 9kg natural wax, 15kg acrylic resin, 5kg palmitic acid (imported primary acid) are put into the emulsification kettle, heated and heated at 90r / The rotation speed of min is stirred to obtain the mixture a;

[0037] (2) Add 1 kg of defoamer (BYK024) to mixture a, start the homogenizer and emulsify for 2 hours at 90 r / min to obtain mixture b;

[0038] (3) Add 0.2 kg of preservative (OIT-45) to the mixture b, and adjust the pH of the emulsification system to 7 with DMEA and terpolymeric acid, and obtain the hydrophobic and waterproof emulsion after discharging.

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Abstract

The invention relates to a hydrophobic waterproof emulsion and a preparation method thereof. The hydrophobic waterproof emulsion is prepared from the following raw materials in parts by weight: 10-26 parts of acrylic resin, 5-11 parts of beewax, 7-8 parts of an emulsifier, 3-6 parts of palmitic acid, 0.5-1 part of a defoaming agent, 0.1-0.2 part of a preservative and 40-60 parts of water. The hydrophobic waterproof emulsion is scientific and reasonable in component proportion and free of alkylphenol, and the system is low in odor and environmentally friendly. After testing, centrifugation, standing and lotus leaf hydrophobic effects are excellent, and the highest water resistance time can reach more than 7 days. The emulsion is high in stability, can be coated by a coating machine, can also be dip-coated and sprayed, and is suitable for producing corrugated paper, kraft paper, cardboard paper and the like with high hydrophobic and waterproof requirements; the process is simple and easy to control, and large-scale production is facilitated.

Description

technical field [0001] The invention belongs to the field of chemical additives, and in particular relates to a hydrophobic and waterproof emulsion and a preparation method thereof. Background technique [0002] Due to its diverse physical and chemical properties, hydrophobic and waterproof emulsions have been widely and importantly used in many important fields such as water-based coatings, construction, and papermaking, and new application paths have been continuously developed. [0003] However, most manufacturers currently use polyurethane emulsion, which not only has no hydrophobic lotus leaf effect, but also has poor system stability, and the water resistance effect cannot be maintained for a long time. In addition, most of the emulsifiers used are alkylphenols, which are harmful to the environment. [0004] Therefore based on this, propose technical scheme of the present invention. Contents of the invention [0005] In order to solve the problems in the prior art, ...

Claims

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Application Information

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IPC IPC(8): D21H19/20D21H19/18D21H19/14D21H21/16
Inventor 赖长凤韩裕龙
Owner 佛山市桥通新材料有限公司
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