阅读说明：本技术 一种钢结构寿命延长剂制备工艺 (Preparation process of steel structure service life prolonging agent ) 是由 江疆 魏春玲 蒋妍 于 2020-12-30 设计创作，主要内容包括：本发明公开一种钢结构寿命延长剂制备工艺,延长剂由以下重量份的组份制成：水性乳液50-55份、固化剂15.75-17.5份、去离子水11.25-12.5份、漂珠9-10份、颜料4.5-5份、石英粉3.6-4份、增稠剂0.45-0.5份、分散剂0.45-0.5份、润湿剂0.135-0.15份、膨润土0.09-0.1份、消泡剂0.0225-0.025份和基材润湿剂0.0135-0.015份,本发明制备工艺有效延长装配钢结构预制墙板在工业化生产过程中钢材的使用寿命,配制后的产品直接用机械均匀喷涂在钢材的表面,可有效增加钢结构的防腐蚀和防火功能,从而达到延长钢结构的使用寿命,制备工艺简单且绿色环保,应用广泛。(The invention discloses a preparation process of a steel structure service life extender, which is prepared from the following components in parts by weight: 50-55 parts of water-based emulsion, 15.75-17.5 parts of curing agent, 11.25-12.5 parts of deionized water, 9-10 parts of floating beads, 4.5-5 parts of pigment, 3.6-4 parts of quartz powder, 0.45-0.5 part of thickening agent, 0.45-0.5 part of dispersing agent, 0.135-0.15 part of wetting agent, 0.09-0.1 part of bentonite, 0.0225-0.025 part of defoaming agent and 0.0135-0.015 part of base material wetting agent.)

1. The preparation process of the steel structure service life extender is characterized in that the extender is prepared from the following components in parts by weight: 50-55 parts of water-based emulsion, 15.75-17.5 parts of curing agent, 11.25-12.5 parts of deionized water, 9-10 parts of floating bead, 4.5-5 parts of pigment, 3.6-4 parts of quartz powder, 0.45-0.5 part of thickening agent, 0.45-0.5 part of dispersing agent, 0.135-0.15 part of wetting agent, 0.09-0.1 part of bentonite, 0.0225-0.025 part of defoaming agent and 0.0135-0.015 part of base material wetting agent.

2. The process for preparing steel structure life prolonging agent according to claim 1, wherein the curing agent is selected from one or a mixture of a first curing agent and a second curing agent.

3. The process for preparing steel structure life prolonging agent as claimed in claim 2, wherein the first curing agent is ketimine addition polyamide curing agent, the amine value is 110-220mgKOH/g, and the active hydrogen equivalent is 200-400.

4. The process for preparing steel structure life prolonging agent as claimed in claim 2, wherein the second curing agent is polyamide curing agent, amine value is 340-460mgKOH/g, active hydrogen equivalent is 100-200.

5. The process for preparing steel structure life prolonging agent according to claim 1, wherein the defoaming agent is 345 defoaming agent or NXZ defoaming agent or the mixture of the two.

6. The process of claim 1, wherein the thickener is 112 thickener.

7. The process for preparing steel structure life prolonging agent according to claim 1, wherein the process for preparing the prolonging agent is as follows

S1, transferring the floating beads, the bentonite and the quartz powder into a sand mill to be ground for 2-3 times respectively, wherein the fineness is less than or equal to 30 mu m;

s2, sequentially adding bentonite and quartz powder into water according to the component ratio, and stirring at the rotating speed of 500-700r/min to prepare suspension;

s3, accelerating the stirrer to 900-;

s4, sequentially adding the pigment, the dispersing agent, the wetting agent and the base material wetting agent at the rotating speed of 800r/min and stirring until the pigment, the dispersing agent, the wetting agent and the base material wetting agent are uniformly dispersed;

s5, decelerating the stirrer to 200-300r/min, slowly adding the aqueous emulsion and the defoaming agent, stirring for 15-25min, observing whether bubbles exist or not, and increasing the stirring time if bubbles exist until the bubbles disappear;

s6, if no bubble exists, cleaning for 15-30min, slowly adding the thickening agent, after the addition is finished, increasing the speed of the stirring machine to 800r/min at 600-;

s7, detecting the fineness of the coarse material, if the fineness is more than 30, transferring the coarse material to a grinder to grind for 2-3 times, and ensuring that the fineness is less than or equal to 30 to finish the preparation.

Technical Field

The invention relates to the field of building housing, in particular to a preparation process of a steel structure service life extender.

Background

The prefabricated steel structure house is developed vigorously, the market share of the prefabricated steel structure house is enlarged, the proportion of the prefabricated steel structure house in the building house in China is very low, the steel structure house is adopted, the surplus of the steel productivity can be digested, the industrial structure is optimized, the development of industrial enterprises is facilitated, and the prefabricated steel structure is a trend of the industrialized development of houses in the future.

The influence steel construction life-span mainly has two kinds of reasons, and first perishable, second is poor fire resistance, the life-span extension main approach to the steel construction at present: firstly, reducing and stopping the oxidation-reduction reaction to slow down the corrosion speed, and generally plating zinc on the surface of steel, or plating aluminum or coating an anticorrosive paint to avoid the direct contact of the steel and oxygen molecules in the air so as to carry out physical isolation; and secondly, the fire resistance of the steel structure is poor, and the fire prevention of the surface of the steel structure is achieved by using fire-proof coating to resist heat or using a fire-proof plate to wrap steel.

Disclosure of Invention

The invention aims to provide a preparation process of a steel structure service life prolonging agent, which effectively prolongs the service life of steel in the industrial production process of an assembled steel structure prefabricated wall board, and the prepared product is directly and uniformly sprayed on the surface of the steel by a machine, so that the corrosion resistance and fire resistance of the steel structure can be effectively improved, and the service life of the steel structure is prolonged.

The purpose of the invention can be realized by the following technical scheme:

a preparation process of a steel structure service life extender is disclosed, wherein the extender is prepared from the following components in parts by weight: 50-55 parts of water-based emulsion, 15.75-17.5 parts of curing agent, 11.25-12.5 parts of deionized water, 9-10 parts of floating bead, 4.5-5 parts of pigment, 3.6-4 parts of quartz powder, 0.45-0.5 part of thickening agent, 0.45-0.5 part of dispersing agent, 0.135-0.15 part of wetting agent, 0.09-0.1 part of bentonite, 0.0225-0.025 part of defoaming agent and 0.0135-0.015 part of base material wetting agent.

Further, the curing agent is selected from one or a mixture of two of a first curing agent and a second curing agent.

Further, the first curing agent is a ketimine addition polyamide curing agent, the amine value is 110-220mgKOH/g, and the active hydrogen equivalent is 200-400.

Further, the second curing agent is a polyamide curing agent, the amine value is 340-460mgKOH/g, and the active hydrogen equivalent is 100-200.

Further, the defoaming agent is 345 defoaming agent or NXZ defoaming agent or the mixture of the two.

Further, the thickener is 112 thickener.

Further, the preparation process of the extender is as follows

S1, transferring the floating beads, the bentonite and the quartz powder into a sand mill to be ground for 2-3 times respectively, wherein the fineness is less than or equal to 30 mu m;

s2, sequentially adding bentonite and quartz powder into water according to the component ratio, and stirring at the rotating speed of 500-700r/min to prepare suspension;

s3, accelerating the stirrer to 900-;

s4, sequentially adding the pigment, the dispersing agent, the wetting agent and the base material wetting agent at the rotating speed of 800r/min and stirring until the pigment, the dispersing agent, the wetting agent and the base material wetting agent are uniformly dispersed;

s5, decelerating the stirrer to 200-300r/min, slowly adding the aqueous emulsion and the defoaming agent, stirring for 15-25min, observing whether bubbles exist or not, and increasing the stirring time if bubbles exist until the bubbles disappear;

s6, if no bubble exists, cleaning for 15-30min, slowly adding the thickening agent, after the addition is finished, increasing the speed of the stirring machine to 800r/min at 600-;

s7, detecting the fineness of the coarse material, if the fineness is more than 30, transferring the coarse material to a grinder to grind for 2-3 times, and ensuring that the fineness is less than or equal to 30 to finish the preparation.

The invention has the beneficial effects that:

1. the preparation process expands the market for the application of the steel structure in the prefabricated building and increases the enterprise competitiveness by prolonging the service life of the steel structure, the salt spray resistance time of the steel product after mechanical spraying treatment reaches 480h, the steel product after surface treatment can be made into a steel structure prefabricated wallboard, the wallboard can be matched with an assembled steel structure, an assembled concrete structure, a traditional steel concrete structure and the like for use, is a very high-quality enclosure system component, can be made into a large wallboard and the assembled building to realize synchronous hoisting, and can also be made into a standard plate to be spliced on site; because the service life of steel is prolonged, the wallboard can be repeatedly used, is convenient to disassemble and assemble, and the materials can be recycled.

2. The preparation process effectively increases the anti-corrosion and fireproof functions of the steel structure, so that the service life of the steel structure is prolonged, the preparation process is simple, green and environment-friendly, the application is wide, the rotating speed is low in the step of removing bubbles, and the bubbles are easy to remove.

Detailed Description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

A preparation process of a steel structure service life extender is disclosed, wherein the extender is prepared from the following components in parts by weight: 50 parts of water-based emulsion, 15.75 parts of curing agent, 11.25 parts of deionized water, 9 parts of floating bead, 4.5 parts of pigment, 3.6 parts of quartz powder, 0.45 part of thickening agent, 0.45 part of dispersing agent, 0.135 part of wetting agent, 0.09 part of bentonite, 0.0225 part of defoaming agent and 0.0135 part of base material wetting agent.

The curing agent is selected from one or a mixture of a first curing agent and a second curing agent.

The first curing agent is a ketimine addition polyamide curing agent, the amine value is 110-220mgKOH/g, and the active hydrogen equivalent is 200-400; the second curing agent is a polyamide curing agent, the amine value is 340-460mgKOH/g, and the active hydrogen equivalent is 100-200.

The defoamer is 345 defoamer and the thickener is 112 thickener.

The preparation process of the extender comprises the following steps

S1, transferring the floating beads, the bentonite and the quartz powder into a sand mill to be ground for 2-3 times respectively, wherein the fineness is less than or equal to 40 mu m;

s2, sequentially adding bentonite and quartz powder into water according to the component ratio, and stirring at the rotating speed of 500r/min to prepare suspension;

s3, accelerating the stirrer to 900r/min, sequentially adding a curing agent, deionized water and floating beads, and stirring until the mixture is transparent and has no particles;

s4, adding the pigment, the dispersing agent, the wetting agent and the substrate wetting agent in sequence at the rotating speed of 600r/min, and stirring until the mixture is uniformly dispersed;

s5, slowing down the speed of the stirrer to 200r/min, slowly adding the aqueous emulsion and the defoaming agent, stirring for 15-25min, observing whether bubbles exist or not, and increasing the stirring time if bubbles exist until the bubbles disappear;

s6, if no bubble exists, cleaning for 15-30min, slowly adding the thickening agent, after the addition is finished, increasing the speed of the stirrer to 600r/min, and stirring for 20-30 min;

and S7, detecting the fineness of the coarse material, if the fineness is more than 30, transferring the coarse material to a grinder to grind for 2-3 times, and ensuring that the fineness is less than or equal to 30 to finish the preparation.

Example 2

A preparation process of a steel structure service life extender is disclosed, wherein the extender is prepared from the following components in parts by weight: 55 parts of water-based emulsion, 17.5 parts of curing agent, 12.5 parts of deionized water, 10 parts of floating bead, 5 parts of pigment, 4 parts of quartz powder, 0.5 part of thickening agent, 0.5 part of dispersing agent, 0.15 part of wetting agent, 0.1 part of bentonite, 0.025 part of defoaming agent and 0.015 part of base material wetting agent.

The curing agent is selected from one or a mixture of a first curing agent and a second curing agent.

The first curing agent is a ketimine addition polyamide curing agent, the amine value is 110-220mgKOH/g, and the active hydrogen equivalent is 200-400; the second curing agent is a polyamide curing agent, the amine value is 340-460mgKOH/g, and the active hydrogen equivalent is 100-200.

The defoaming agent is 345 defoaming agent or NXZ defoaming agent or the mixture of the two, and the thickening agent is 112 thickening agent.

The preparation process of the extender comprises the following steps

S1, transferring the floating beads, the bentonite and the quartz powder into a sand mill to be ground for 2-3 times respectively, wherein the fineness is less than or equal to 40 mu m;

s2, sequentially adding bentonite and quartz powder into water according to the component ratio, and stirring at the rotating speed of 500r/min to prepare suspension;

s3, accelerating the stirrer to 900r/min, sequentially adding a curing agent, deionized water and floating beads, and stirring until the mixture is transparent and has no particles;

s4, adding the pigment, the dispersing agent, the wetting agent and the substrate wetting agent in sequence at the rotating speed of 600r/min, and stirring until the mixture is uniformly dispersed;

s5, slowing down the speed of the stirrer to 200r/min, slowly adding the aqueous emulsion and the defoaming agent, stirring for 15-25min, observing whether bubbles exist or not, and increasing the stirring time if bubbles exist until the bubbles disappear;

s6, if no bubble exists, cleaning for 15-30min, slowly adding the thickening agent, after the addition is finished, increasing the speed of the stirrer to 600r/min, and stirring for 20-30 min;

and S7, detecting the fineness of the coarse material, if the fineness is more than 30, transferring the coarse material to a grinder to grind for 2-3 times, and ensuring that the fineness is less than or equal to 30 to finish the preparation.

Example 3

A preparation process of a steel structure service life extender is disclosed, wherein the extender is prepared from the following components in parts by weight: 55 parts of water-based emulsion, 17.5 parts of curing agent, 12.5 parts of deionized water, 10 parts of floating bead, 5 parts of pigment, 4 parts of quartz powder, 0.5 part of thickening agent, 0.5 part of dispersing agent, 0.15 part of wetting agent, 0.1 part of bentonite, 0.025 part of defoaming agent and 0.015 part of base material wetting agent.

The curing agent is selected from one or a mixture of a first curing agent and a second curing agent.

The first curing agent is a ketimine addition polyamide curing agent, the amine value is 110-220mgKOH/g, and the active hydrogen equivalent is 200-400; the second curing agent is a polyamide curing agent, the amine value is 340-460mgKOH/g, and the active hydrogen equivalent is 100-200.

The defoaming agent is 345 defoaming agent or NXZ defoaming agent or the mixture of the two, and the thickening agent is 112 thickening agent.

The preparation process of the extender comprises the following steps

S1, transferring the floating beads, the bentonite and the quartz powder into a sand mill to be ground for 2-3 times respectively, wherein the fineness is less than or equal to 40 mu m;

s2, sequentially adding bentonite and quartz powder into water according to the component ratio, and stirring at the rotating speed of 500r/min to prepare suspension;

s3, accelerating the stirrer to 900r/min, sequentially adding a curing agent, deionized water and floating beads, and stirring until the mixture is transparent and has no particles;

s4, adding the pigment, the dispersing agent, the wetting agent and the substrate wetting agent in sequence at the rotating speed of 600r/min, and stirring until the mixture is uniformly dispersed;

s5, slowing down the stirrer to 800r/min, slowly adding the aqueous emulsion and the defoaming agent, stirring for 15-25min, observing whether bubbles exist or not, and increasing the stirring time if bubbles exist until the bubbles disappear;

s6, if no bubble exists, cleaning for 15-30min, slowly adding the thickening agent, after the addition is finished, increasing the speed of the stirrer to 600r/min, and stirring for 20-30 min;

and S7, detecting the fineness of the coarse material, if the fineness is more than 30, transferring the coarse material to a grinder to grind for 2-3 times, and ensuring that the fineness is less than or equal to 30 to finish the preparation.

Example 1 is different from example 2 in the components of the component extender, but all are within the scope of the invention, and the salt spray resistant time reaches 480h, which shows that the invention has high corrosion resistant and corrosion resistant efficacy.

Example 2 differs from example 3 in the rotation speed of the stirrer in step S5, and the result shows that the high rotation speed in example 3 causes some bubbles in step S5, and the bubbles are difficult to be eliminated at the high rotation speed, further explaining that the rotation speed in this step is not too high.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.