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Two-component low-toxicity flame-retardant epoxy-based joint mixture and preparation method thereof

An epoxy-based, two-component technology, applied in the field of coatings, can solve the problem that it is not suitable for ships, does not have low toxicity, flame retardant, seawater corrosion resistance, self-leveling, smoke suppression, and does not meet the requirements of marine caulking agents, etc. problems, to achieve good self-leveling characteristics, improve the flame retardant effect, and reduce the amount of addition.

Active Publication Date: 2017-01-25
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The caulking agent of the above patents solves the problem of caulking to a certain extent, but it is not suitable for application in ships, especially in the water ditch, and does not have comprehensive properties such as low toxicity, flame retardancy, seawater corrosion resistance, self-leveling, and smoke suppression. Does not meet ship's requirements for caulk

Method used

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  • Two-component low-toxicity flame-retardant epoxy-based joint mixture and preparation method thereof

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preparation example Construction

[0025] The preparation method of the two-component epoxy-based flame-retardant low-toxicity caulking agent of the present invention, the detailed steps are as follows:

[0026] (1) According to the ratio of the raw materials of the aforementioned caulking agent, weigh each raw material and set aside;

[0027] (2) Preparation of resin component A: Mix hydroxide compound, acid zinc compound, high wear-resistant carbon black and precipitated silica in a powder disperser, and the stirring blade rotates at 100-150r / min, and disperses Treat for 15-20 minutes to form a powder mixture; stir and mix the phosphating epoxy resin and silicone coupling agent in a double planetary mixer, the stirring speed is 40-60r / min, and the mixing time is 40-60min; the powder Put the mixture into the mixer, soak it for 10-12 hours and then stir it. The speed of the stirring blade is 100-120r / min, and the mixing time is 60-80min. Grind repeatedly on the grinder until the fineness is less than 50 μm, an...

Embodiment 1

[0031] Preparation of resin component A: In parts by weight, weigh 40 parts of magnesium hydroxide, 60 parts of zinc borate, 2 parts of high wear-resistant carbon black, and 10 parts of precipitated white carbon black, and put them into a powder disperser for mixing , stirring paddle speed 150r / min, dispersion treatment 20min, forming a powder mixture; stirring and mixing 100 parts of phosphating epoxy resin and 5 parts of anilinomethyltrimethoxysilane in a double planetary mixer, stirring speed 60r / min, mixing time 60min; put the powder mixture into the mixer, soak for 12h and then stir, the speed of the stirring paddle is 120r / min, and the mixing time is 80min; Grind to a fineness of 46 μm, and pack into barrels to obtain resin component A.

[0032] Preparation of curing agent component B: in parts by weight, weigh 40 parts of phenalkamine T31 and 10 parts of DMP-30 respectively, stir and mix in a double planetary mixer, the speed of the stirring blade is 60r / min, the mixing...

Embodiment 2

[0035] Preparation of resin component A: In parts by weight, weigh 60 parts of aluminum hydroxide, 40 parts of zinc stannate, 1 part of high wear-resistant carbon black, and 15 parts of precipitated white carbon black, and put them into a powder disperser for Mixing, stirring paddle speed 100r / min, dispersing treatment for 15min, forming a powder mixture; stirring and mixing 100 parts of phosphating epoxy resin and 3 parts of γ-aminopropyltriethoxysilane in a double planetary mixer, The speed of the stirring blade is 40r / min, and the mixing time is 50min; put the powder mixture into the mixer, soak for 10h and then stir, the speed of the stirring blade is 100r / min, and the mixing time is 60min; after stirring evenly, add the stirring material to the three-roll grinding Grind in the machine until the fineness is 48 μm, and put into barrels to obtain resin component A.

[0036]Preparation of curing agent component B: in parts by weight, weigh 50 parts of polyamide 651 and 8 part...

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Abstract

The invention relates to a two-component low-toxicity flame-retardant epoxy-based joint mixture and relates to coatings for ship gutterways. The two-component low-toxicity flame-retardant epoxy-based joint mixture comprises a component A and a component B which are mixed in a weight ratio of 2 to 1, wherein the component A comprises, by weight, 100 parts of phosphorized epoxy resin, 40-60 parts of hydroxide, 40-60 parts of acid zinc compound, 3-5 parts of organosilicon coupling agent, 1-2 parts of highly-wear-resistant carbon black and 10-20 parts of precipitated white carbon; the component B comprises, by weight, 40-50 parts of epoxy-amine curing agent and 8-10 parts of DMP-30; the hydroxide is selected from one of aluminum hydroxide and magnesium hydroxide, and the acid zinc compound is one of zinc borate and zinc stannate. The two-component low-toxicity flame-retardant epoxy-based joint mixture is capable of meeting the performance requirements on joint mixtures for the ship gutterways and has the comprehensive advantages of low toxicity, flame retardance, resistance to seawater corrosion and self-leveling.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a two-component epoxy-based flame-retardant and low-toxicity caulking agent used for the water ditch of ships and a preparation method thereof. Background technique [0002] Ships have been in the marine environment for a long time, and seawater corrosion has always been a major problem for ships. The corrosion of seawater and ocean atmosphere on the steel and metal of the hull is more serious than that on land. If effective protective measures are not taken, the life of the ship will be shortened. During the normal operation of the ship, a large amount of circulating cooling water and sewage will be produced, which will be discharged out of the hull through the water ditch, and the undischarged circulating cooling water and sewage will remain in the running water ditch. Internal brush application of caulk to isolate seawater from contact with hull metal. In addition to the sea...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D7/12C09D5/18C09D5/08
CPCC08K3/04C08K3/22C08K3/34C08K3/36C08K3/38C08K5/544C08K2003/2224C08K2003/2227C08K2003/387C09D5/08C09D5/18C09D163/00
Inventor 王绪文程伟王兵
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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