Hot melt type strippable protective material and preparation method thereof

A protective material, hot-melt type technology, applied in anti-corrosion coatings, anti-fouling/underwater coatings, polyester coatings, etc., can solve the problems of difficult dispersion and unfavorable construction of large workpieces, and achieve good film-forming effect and good anti-corrosion Aging resistance, effect of improving corrosion resistance

Inactive Publication Date: 2016-04-13
CHINA NAT OFFSHORE OIL CORP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN103739981A discloses a hot-melt peelable plastic, which uses polyvinyl chloride and polyethylene as film-formers, and CN103725149 discloses a preparation method for hot-melt peelable plastic. Membrane, CN104497364 discloses a hot-melt peelable anti-corrosion plastic and its preparation method. The patent uses cellulose acetate butyrate as a film-former, and its toughening agent adopts nano-calcium carbonate, but it is difficult to disperse at high temperature
The above patents all use the dip coating method to protect the workpiece, which is not conducive to the construction of large workpieces

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1 Preparation of hot-melt peelable protective material

[0037] Concrete preparation steps are as follows:

[0038] (1) Preparation of Component A

[0039] ① Prepare 3 parts by weight of titanium dioxide, 5 parts by weight of di-n-octyl phthalate, 3 parts by weight of castor oil, and 5 parts by weight of dehydrated malic anhydride resin, for subsequent use;

[0040] ②Add the castor oil and di-n-octyl phthalate prepared in step ① into the reaction vessel, stir and heat to 120°C, then add the dehydrated malic acid resin prepared in step ①, after the temperature reaches 130°C, stir at constant temperature to 422°C # After the dehydrated malic acid resin is completely dissolved, cool to room temperature;

[0041] ③Add the titanium dioxide prepared in step ① to the material prepared in step ②, stir and disperse at a speed of 1600r / m for 1.5h, then let stand to obtain component A, and keep it for later use;

[0042] (2) Preparation of component B

[0043] ①Prepare...

Embodiment 2

[0048] Example 2 Preparation of hot-melt peelable protective material

[0049] Concrete preparation steps are as follows:

[0050] (1) Preparation of Component A

[0051] 1. Prepare 5 parts by weight of titanium dioxide, 7 parts by weight of di-n-octyl phthalate, 5 parts by weight of castor oil, and 7 parts by weight of dehydrated malic anhydride resin, for subsequent use;

[0052] ②Add the castor oil and di-n-octyl phthalate prepared in step ① into the reaction vessel, stir and heat to 120°C, then add the dehydrated malic acid resin prepared in step ①, after the temperature reaches 130°C, stir at constant temperature to 422°C # After the dehydrated malic acid resin is completely dissolved, cool to room temperature;

[0053] ③Add the titanium dioxide prepared in step ① to the material prepared in step ②, stir and disperse at a speed of 1600r / m for 1.5h, then let stand to obtain component A, and keep it for later use;

[0054] (2) Preparation of component B

[0055] ①Prepare ...

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PUM

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Abstract

The invention relates to a hot melt type strippable protective material and a preparation method thereof. The material is composed of a component A and a component B at a weight ratio of (3-5) to 1, wherein the component A comprises the following components in parts by weight: 3-5 parts of titanium dioxide, 5-7 parts of di-n-octyl phthalate, 3-5 parts of castor oil and 5-7 parts of malic anhydride resin; and the component B comprises the following components in parts by weight: 14-18 parts of cellaburate, 24-28 parts of mineral oil, 24-28 parts of di-n-octyl phthalate, 8-10 parts of triorthocresol phosphate, 1-2 parts of anhydrous lanolin, 1-2 parts of solid paraffin wax and 1-2 parts of octyl phenol. The hot melt type strippable protective material is readily available in raw materials, wide in market prospect and simple in preparation method; the coating obtained by the material has acid resistance, base resistance, aging resistance and excellent corrosion resistance; the material has strong applicability and can be used for protection of the surface of the structural component; and the material can be stripped at normal temperature, and the stripped material can be recycled, thereby realizing energy-saving, environment-friendly, and pollution-free effects.

Description

technical field [0001] The invention relates to a hot-melt peelable protective material and a preparation method thereof, which is especially suitable for the protection of steel structure surfaces. Background technique [0002] In the field of special-shaped structure (flange-bolt system) protection, traditional coating protection is not conducive to the disassembly and maintenance of special-shaped structures, and it is easy to be bumped and damaged during construction. There will be gaps between structures, which are easily corroded by corrosive media. Therefore, the protective effect is not ideal. At present, viscoelastic anti-corrosion paste is also used as anti-corrosion material. This material protects the base material by isolating the corrosive medium. It is inconvenient, and at the same time, it is easy to bring in air during use, causing air bubbles to appear. Therefore, it is necessary to develop a strippable and reusable material that is convenient for constru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D191/00C09D101/14C09D167/04C09D5/20C09D5/08C09D5/14C09D7/12
CPCC08L2201/08C08L2205/02C08L2205/025C08L2205/035C09D5/08C09D5/14C09D5/20C09D191/00C09D7/61C09D7/63C09D7/65C08L1/14C08L91/00C08L67/04C08L91/06C08K13/02C08K2003/2241C08K5/12C08K5/523C08K5/13
Inventor 张炬马胜军狄志刚王永才方健君徐科靳美亮李敏
Owner CHINA NAT OFFSHORE OIL CORP
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