CN104708691A - Halogen-free, flame-retardant, and low-smoke timber flame retardant and preparation method thereof - Google Patents

Abstract

The invention discloses a halogen-free, flame-retardant, and low-smoke timber flame retardant, and a preparation method thereof. The flame retardant is composed of the following components in percentage by weight: 30 to 50% of phosphoric acid, 20 to 30% of dicyandiamide, 10 to 20% of superfine zinc borate, 2 to 10% of aluminum sulfate, 5 to 20% of silica sol, 3 to 8% of sodium molybdate, and 0.5 to 5% of diethanolamine. Compared with the prior art, the provided flame retardant has a high content of flame retardant elements such as phosphor, nitrogen, aluminum, silicon, and the like; at the same time a proper amount of diethanolamine is added and used as the dispersant and surfactant, sodium molybdate is added as the smoke inhibitor, which can prominently improve the smoke suppressing effect, and moreover the flame retardant has the advantages of halogen free, environment-friendliness, corrosion resistance, insect resistance, and stable size. The provided preparation method is simple, the impregnation depth on the timber surface is deep, the flame retardant effect is good, the phenomenon of migration and moisture absorption is eliminated, the cost is low, and the application prospect is good.

Description

Wood fire retardant of the low cigarette of a kind of halogen-free flameproof and preparation method thereof

Technical field

The present invention relates to wood fire retardant technical field, specifically the wood fire retardant and preparation method thereof of the low cigarette of a kind of halogen-free flameproof.

Background technology

Timber is widely used in the fields such as building, furniture owing to having good visual characteristic, tactile characteristics, temperature adjustment function and good mechanical property.But timber belongs to combustible material, pole fire hazardous, may cause huge casualties and property loss.Along with the public's fire safety consciousness raising, and China's fire-fighting policy, regulation, standard perfect gradually, fire-retarding of wood becomes and becomes more and more important, and market is also in the urgent need to good wood fire retardant.Along with the development and progression of society, wood fire retardant is required that low cigarette, Halogen, environmental protection and low cost just become social concerns and urgent problem.

Summary of the invention

The object of the present invention is to provide wood fire retardant of the low cigarette of a kind of halogen-free flameproof and preparation method thereof.

The technical solution adopted for the present invention to solve the technical problems is: the wood fire retardant of the low cigarette of a kind of halogen-free flameproof, and its component by mass percent proportioning is: phosphoric acid 30% ~ 50%, dicyandiamide 20% ~ 30%, superfine zinc borate 10% ~ 20%, aluminum sulfate 2% ~ 10%, Ludox 5% ~ 20%, sodium molybdate 3% ~ 8%, diethanol amine 0.5% ~ 5%.

The mass concentration of described phosphoric acid is 70 ~ 85wt%.

The content of the silica of described Ludox is 20 ~ 40wt%.

The preparation method of the wood fire retardant of the low cigarette of a kind of halogen-free flameproof of the present invention, comprises the following steps:

(1), each component is taken by mass percent proportioning;

(2), by phosphoric acid adding water and being mixed with concentration is 45 ~ 60wt% aqueous solution, and then add aluminum sulfate and stir and be heated to 70 DEG C ~ l20 DEG C maintenance 30 ~ 45 minutes, then cool to room temperature, obtains solution A;

(3), by dicyandiamide added water after dissolving, add superfine zinc borate and stir and be heated to 25 DEG C ~ 60 DEG C maintenances 15 ~ 30 minutes, then cool to room temperature, to obtain solution B;

(4), the solution B of the solution A of step (2) and step (3) is mixed, and add Ludox, sodium molybdate, diethanol amine, 15 ~ 30 minutes are mixed at 70 DEG C ~ 90 DEG C, then room temperature is cooled to, obtain the present invention, also can by the fire resistant fluid of this mixing through supercooling, filtration, crystallization, oven dry, pulverize, sieve after, obtain pulverous the present invention.

The invention has the beneficial effects as follows, compared with prior art, ignition-proof element containing higher phosphorus, nitrogen, boron, aluminium, silicon in the present invention, and add appropriate diethanol amine as dispersant and surfactant, add sodium molybdate as smoke suppressant, thus significantly improve its flame-retardant smoke inhibition effect, and meet halogen-free environmental requirement and there is anticorrosion, effect such as insect protected and dimensionally stable; Preparation method provided by the invention is simple, good flame retardation effect large to wood surface impregnating depth, non-migratory, hygroscopic effect, and cost is lower, and application prospect is good.

Detailed description of the invention

Technical scheme of the present invention is further illustrated below in conjunction with concrete preferred embodiment.

A wood fire retardant for the low cigarette of halogen-free flameproof, its component by mass percent proportioning is: phosphoric acid 32%, dicyandiamide 30%, superfine zinc borate 10%, aluminum sulfate 10%, Ludox 10%, sodium molybdate 5%, diethanol amine 3%.Wherein, the mass concentration of described phosphoric acid is 70 ~ 85wt%; The content of the silica of described Ludox is 20 ~ 40wt%.

Its preparation method is: (1), take each component by mass percent proportioning; (2), by phosphoric acid adding water and being mixed with concentration is 45 ~ 60wt% aqueous solution, and then add aluminum sulfate and stir and be heated to 70 DEG C ~ l20 DEG C maintenance 30 ~ 45 minutes, then cool to room temperature, obtains solution A; (3), by dicyandiamide added water after dissolving, add superfine zinc borate and stir and be heated to 25 DEG C ~ 60 DEG C maintenances 15 ~ 30 minutes, then cool to room temperature, to obtain solution B; (4), the solution B of the solution A of step (2) and step (3) is mixed, and add Ludox, sodium molybdate, diethanol amine, 15 ~ 30 minutes are mixed at 70 DEG C ~ 90 DEG C, then room temperature is cooled to, obtain the present invention, also can by the fire resistant fluid of this mixing through supercooling, filtration, crystallization, oven dry, pulverize, sieve after, obtain pulverous the present invention.

Claims (4)

1. the wood fire retardant of the low cigarette of halogen-free flameproof, it is characterized in that, its component by mass percent proportioning is: phosphoric acid 30% ~ 50%, dicyandiamide 20% ~ 30%, superfine zinc borate 10% ~ 20%, aluminum sulfate 2% ~ 10%, Ludox 5% ~ 20%, sodium molybdate 3% ~ 8%, diethanol amine 0.5% ~ 5%.

2. the wood fire retardant of the low cigarette of a kind of halogen-free flameproof according to claim 1, is characterized in that, the mass concentration of described phosphoric acid is 70 ~ 85wt%.

3. the wood fire retardant of the low cigarette of a kind of halogen-free flameproof according to claim 1, is characterized in that, the content of the silica of described Ludox is 20 ~ 40wt%.

4. the preparation method of the wood fire retardant of the low cigarette of a kind of halogen-free flameproof according to claim 1, is characterized in that, comprise the following steps:

(1), each component is taken by mass percent proportioning;

(2), by phosphoric acid adding water and being mixed with concentration is 45 ~ 60wt% aqueous solution, and then add aluminum sulfate and stir and be heated to 70 DEG C ~ l20 DEG C maintenance 30 ~ 45 minutes, then cool to room temperature, obtains solution A;

(3), by dicyandiamide added water after dissolving, add superfine zinc borate and stir and be heated to 25 DEG C ~ 60 DEG C maintenances 15 ~ 30 minutes, then cool to room temperature, to obtain solution B;

(4), the solution B of the solution A of step (2) and step (3) is mixed, and add Ludox, sodium molybdate, diethanol amine, 15 ~ 30 minutes are mixed at 70 DEG C ~ 90 DEG C, then room temperature is cooled to, obtain the present invention, also can by the fire resistant fluid of this mixing through supercooling, filtration, crystallization, oven dry, pulverize, sieve after, obtain pulverous the present invention.