CN109467829B - Heat insulation wallboard material and manufacturing method thereof - Google Patents

Abstract

The invention provides a heat insulation wallboard material which comprises the following components in parts by weight: 100 parts of polystyrene, 1-2 parts of stabilizer, 7-10 parts of flame retardant, 2-3 parts of foaming agent, 0.3-0.6 part of mildew preventive, 0.5-1 part of lubricant, 11-15 parts of silicon-aluminum-ytterbium composite oxide and 0.5-0.9 part of composite coupling agent. The invention also provides a manufacturing method of the heat-insulating wallboard material. The invention has better heat insulation performance, toughness, hardness and aging resistance.

Description

Heat insulation wallboard material and manufacturing method thereof

Technical Field

The invention relates to a wallboard material, in particular to a heat-insulating wallboard material and a manufacturing method thereof.

Background

The wall board is a building material, and is a house structure of a bearing system consisting of walls and floor slabs. The bearing wall of the wallboard structure can be made of bricks, building blocks, prefabricated or cast-in-place concrete, and can be divided into a mixed structure, an assembled large-plate structure and a cast-in-place wallboard structure according to different used materials and construction methods. The new composite wallboard is a new generation of high-performance building inner partition board in industrial production, is formed by compounding various building materials and replaces the traditional bricks and tiles. The composite wallboard generally comprises fine aggregate and a core material, wherein the core material generally adopts polystyrene so as to achieve better heat preservation, heat insulation and sound insulation effects.

The Chinese patent with the application number of CN201710457424.4 provides an outdoor polystyrene composite material which can be applied to wood-plastic indoor doors, skirting lines, integrated cabinets, wardrobes, exterior wall cladding, suspended ceilings, decorative wallboards, outdoor floors, guardrail columns, plastic-steel pavilions, garden guardrails, balcony guardrails, garden fences, leisure benches, tree pools, flower stands, flower box air-conditioning frames, air-conditioning shields, shutters, pavement signboards, transportation trays and the like, and a preparation method thereof, wherein the outdoor polystyrene composite material comprises, by weight, 1000 parts of 2000 parts of recycled foamed plastic polystyrene, 50 parts to 300 parts of wood flour, 20 parts to 100 parts of interface modifier, 1 part to 30 parts of foaming agent, 5 parts to 50 parts of nucleating agent, 50 parts to 200 parts of white oil, 100 parts of 1000 parts of impact modifier and 3 parts to 20 parts of antioxidant. The polystyrene composite material has the following problems: it has no barrier or reflection action to infrared radiation, so that it has poor heat-insulating effect, and its toughness, hardness and ageing-resistant property are not ideal.

Disclosure of Invention

The invention aims to provide a heat-insulating wallboard material which has good heat-insulating property, toughness, hardness and ageing resistance.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a heat insulation wallboard material comprises the following components in parts by weight: 100 parts of polystyrene, 1-2 parts of stabilizer, 7-10 parts of flame retardant, 2-3 parts of foaming agent, 0.3-0.6 part of mildew preventive, 0.5-1 part of lubricant, 11-15 parts of silicon-aluminum-ytterbium composite oxide and 0.5-0.9 part of composite coupling agent.

Further, the stabilizer is barium stearate.

Further, the flame retardant is magnesium hydroxide.

Further, the blowing agent of the present invention is pentane.

Further, the mildew preventive is 8-hydroxyquinoline copper.

Further, the lubricant of the present invention is PE wax.

Further, the preparation method of the silicon-aluminum-ytterbium composite oxide comprises the following steps:

stirring tetraethoxysilane, absolute ethyl alcohol and polyethylene glycol in a weight ratio of 1:30:0.1 until the mixture is uniformly mixed to obtain a solution A, adding aluminum nitrate into 20 times of absolute ethyl alcohol in weight ratio, stirring until the mixture is uniformly mixed to obtain a solution B, adding ytterbium nitrate into 20 times of absolute ethyl alcohol in weight ratio, stirring until the mixture is uniformly mixed to obtain a solution C, mixing the solution A, the solution B and the solution C in a weight ratio of 40:40:1, stirring for 5 hours to form sol, aging for 5 hours to obtain wet gel, drying the wet gel at 140 ℃ for 15 hours to obtain dry gel, putting the dry gel into a muffle furnace, calcining for 2.5 hours at 600 ℃, cooling to room temperature, taking out, and grinding to obtain the silicon-aluminum-ytterbium composite oxide.

Further, the preparation steps of the composite coupling agent are as follows:

adding silane KH550 into 10 times of anhydrous ethanol by weight, stirring for 1 hour at 45 ℃ to obtain a solution D, mixing stearic acid and aluminum isopropoxide by weight, reacting for 3 hours at 135 ℃ and under the vacuum degree of 0.098MPa to obtain a reactant, adding the reactant into 10 times of anhydrous ethanol by weight, stirring for 1 hour at 45 ℃ to obtain a solution E, mixing the solution D and the solution E by weight, stirring for 2 hours at 55 ℃ to obtain a product, filtering the product, and drying to obtain the composite coupling agent.

Another object of the present invention is to provide a method for manufacturing the above-mentioned thermal insulation wallboard material.

In order to solve the technical problems, the technical scheme is as follows:

a method of making an insulated wall panel material, comprising the steps of:

(1) weighing the components in parts by weight, adding the composite coupling agent into 9 times of anhydrous ethanol by weight, stirring until the components are uniformly mixed to obtain a coupling agent solution, adding the flame retardant and the silicon-aluminum-ytterbium composite oxide into the coupling agent solution, stirring for 3 hours, taking out and drying to obtain a mixture;

(2) adding the mixture obtained in the step (1) and other components into a stirrer, and stirring for 1 hour to obtain a mixture;

(3) and (3) adding the mixture obtained in the step (2) into an extruder, extruding at the screw rotation speed of 500-600rpm at 230 ℃ to obtain an extruded material, granulating the extruded material, and drying to obtain the heat-insulating wallboard material.

Compared with the prior art, the invention has the following beneficial effects:

1) the silicon-aluminum-ytterbium composite oxide compounded by silicon dioxide, aluminum oxide and ytterbium oxide is prepared by adopting a sol-gel method, wherein the silicon dioxide can enhance the toughness and the heat resistance of the polystyrene material, the aluminum oxide has good hardness and heat resistance and better infrared radiation reflection performance, so that the hardness, the heat resistance and the heat insulation effect of the polystyrene material can be effectively improved, and the ytterbium oxide can excite the aluminum oxide to greatly improve the infrared radiation reflectivity of the aluminum oxide, thereby further improving the heat insulation effect of the polystyrene material.

2) The compatibility among the flame retardant, the silicon-aluminum-ytterbium composite oxide and the polystyrene is poor, and the performance of the bonding strength and the actual effect is influenced, the composite coupling agent compounded by silane and aluminate is prepared, and the compatibility and the bonding strength of the flame retardant, the silicon-aluminum-ytterbium composite oxide and the polystyrene can be greatly improved, so that the heat-insulating property, the toughness and the hardness of the heat-insulating wallboard material are further improved, and the aging resistance of the heat-insulating wallboard material can be effectively improved; in addition, compared with the common silane coupling agent, the composite coupling agent used in the invention also comprises aluminate ester, so that the coupling modification effect of the silicon-aluminum-ytterbium composite oxide is better.

Detailed Description

The present invention will be described in detail with reference to specific embodiments, and the exemplary embodiments and descriptions thereof herein are provided to explain the present invention but not to limit the present invention.

Example 1

The heat insulation wallboard material comprises the following components in parts by weight: 100 parts of polystyrene, 1.5 parts of barium stearate, 9 parts of magnesium hydroxide, 2.5 parts of pentane, 0.5 part of 8-hydroxyquinoline copper, 0.5 part of PE wax, 14 parts of silicon-aluminum-ytterbium composite oxide and 0.8 part of composite coupling agent.

The manufacturing method of the heat-insulating wallboard material comprises the following steps:

(1) stirring tetraethoxysilane, absolute ethyl alcohol and polyethylene glycol in a weight ratio of 1:30:0.1 until the mixture is uniformly mixed to obtain a solution A, adding aluminum nitrate into 20 times of absolute ethyl alcohol in weight ratio, stirring until the mixture is uniformly mixed to obtain a solution B, adding ytterbium nitrate into 20 times of absolute ethyl alcohol in weight ratio, stirring until the mixture is uniformly mixed to obtain a solution C, mixing the solution A, the solution B and the solution C in a weight ratio of 40:40:1, stirring for 5 hours to form sol, aging for 5 hours to obtain wet gel, drying the wet gel at 140 ℃ for 15 hours to obtain dry gel, putting the dry gel into a muffle furnace, calcining for 2.5 hours at 600 ℃, cooling to room temperature, taking out, and grinding to obtain silicon-aluminum-ytterbium composite oxide;

(2) adding silane KH550 into 10 times of anhydrous ethanol by weight, stirring for 1 hour at 45 ℃ to obtain a solution D, mixing stearic acid and aluminum isopropoxide by weight, reacting for 3 hours at 135 ℃ and under the vacuum degree of 0.098MPa to obtain a reactant, adding the reactant into 10 times of anhydrous ethanol by weight, stirring for 1 hour at 45 ℃ to obtain a solution E, mixing the solution D and the solution E by weight, stirring for 2 hours at 55 ℃ to obtain a product, filtering the product, and drying to obtain the composite coupling agent;

(3) weighing the components in parts by weight, adding the composite coupling agent into 9 times of anhydrous ethanol by weight, stirring until the components are uniformly mixed to obtain a coupling agent solution, adding the flame retardant and the silicon-aluminum-ytterbium composite oxide into the coupling agent solution, stirring for 3 hours, taking out and drying to obtain a mixture;

(4) adding the mixture obtained in the step (3) and other components into a stirrer, and stirring for 1 hour to obtain a mixture;

(5) and (3) adding the mixture obtained in the step (4) into an extruder, extruding at the screw rotation speed of 500-600rpm at 230 ℃ to obtain an extruded material, granulating the extruded material, and drying to obtain the heat-insulating wallboard material.

Example 2

The heat insulation wallboard material comprises the following components in parts by weight: 100 parts of polystyrene, 2 parts of barium stearate, 7 parts of magnesium hydroxide, 2.1 parts of pentane, 0.4 part of 8-hydroxyquinoline copper, 1 part of PE wax, 11 parts of silicon-aluminum-ytterbium composite oxide and 0.9 part of composite coupling agent.

The method of making the insulated wall panel material was the same as in example 1.

Example 3

The heat insulation wallboard material comprises the following components in parts by weight: 100 parts of polystyrene, 1.8 parts of barium stearate, 8 parts of magnesium hydroxide, 2 parts of pentane, 0.6 part of 8-hydroxyquinoline copper, 0.8 part of PE wax, 15 parts of silicon-aluminum-ytterbium composite oxide and 0.5 part of composite coupling agent.

The method of making the insulated wall panel material was the same as in example 1.

Example 4

The heat insulation wallboard material comprises the following components in parts by weight: 100 parts of polystyrene, 1 part of barium stearate, 10 parts of magnesium hydroxide, 3 parts of pentane, 0.3 part of 8-hydroxyquinoline copper, 0.7 part of PE wax, 12 parts of silicon-aluminum-ytterbium composite oxide and 0.7 part of composite coupling agent.

The method of making the insulated wall panel material was the same as in example 1.

Reference example 1

The silica-alumina-ytterbium composite oxide was replaced with alumina, and the other components and the production method were the same as in example 1.

Reference example 2

Silica was used in place of the silicon-aluminum-ytterbium composite oxide, and the other components and the production method were the same as in example 1.

Reference example 3

KH550 was used instead of the complex coupling agent, and the other components and the manufacturing method were the same as those of example 1.

Comparative example

The comparative example is example 1 of the chinese invention having application number CN 201710457424.4.

The first experimental example: testing of Heat insulating Properties

The heat conductivity coefficient of each material is tested by adopting a flat plate heat conductivity instrument with reference to GB10294-2008, and the lower the heat conductivity coefficient is, the better the heat insulation performance is. The test results are shown in table 1:

TABLE 1

As is apparent from Table 1, the thermal conductivity of the inventive examples 1-4 is lower than that of the comparative examples, indicating that the thermal insulation performance of the present invention is superior. The components of reference examples 1-3 are different from those of example 1, wherein the thermal conductivity coefficients of reference examples 2 and 3 are increased to different degrees, which shows that alumina and the composite coupling agent in the silicon-aluminum-ytterbium composite oxide can effectively improve the heat insulation performance; the thermal conductivity of reference example 1 is almost the same as that of examples 1 to 4, and it is shown that the silica in the silicon-aluminum-ytterbium composite oxide has almost no influence on the thermal insulation performance.

Experiment example two: toughness testing

The impact strength of each material is tested by a cantilever beam impact tester with reference to ASTM D256, and the higher the impact strength is, the better the toughness is. The test results are shown in table 2:

	impact Strength (J.m)-1)
		Example 1	212.8
Example 2	211.5
		Example 3	212.3
Example 4	210.7
		Reference example 1	183.4
Reference example 2	210.5
		Reference example 3	190.6
Comparative example	178.2

TABLE 2

As is apparent from Table 2, examples 1 to 4 of the present invention are all higher in impact strength than comparative examples, indicating that the toughness of the present invention is better. The components of reference examples 1-3 are different from those of example 1, wherein the impact strengths of reference examples 1 and 3 are reduced to different degrees, which shows that the silicon dioxide and the composite coupling agent in the silicon-aluminum-ytterbium composite oxide can effectively improve the toughness; reference example 2 shows that the impact strength is almost the same as examples 1 to 4, and that the alumina in the silicon-aluminum-ytterbium composite oxide has almost no influence on the toughness.

Experiment example three: hardness test

The rockwell hardness of each material was tested with reference to GB 1633-90. The test results are shown in table 3:

	rockwell Hardness (HRL)
		Example 1	88.5
Example 2	88.2
		Example 3	87.7
Example 4	88.0
		Reference example 1	88.3
Reference example 2	80.4
		Reference example 3	84.8
Comparative example	78.1

TABLE 3

As is apparent from Table 3, the Rockwell hardness of the examples 1 to 4 of the present invention is higher than that of the comparative example, indicating that the hardness of the present invention is superior. The compositions of reference examples 1-3 are different from example 1, wherein the Rockwell hardness of reference examples 2 and 3 is reduced to different degrees, which shows that the alumina and the composite coupling agent in the Si-Al-Yb composite oxide can effectively improve the hardness; the Rockwell hardness of reference example 1 is almost the same as that of examples 1 to 4, and it is shown that the silica in the Si-Al-Yb composite oxide has almost no influence on the hardness.

Experimental example four: aging resistance test

Placing the materials in an ultraviolet light accelerated aging box, setting the irradiation wavelength to be 340nm, the illumination temperature to be 50 ℃, the relative humidity to be 50%, the irradiation intensity to be 0.56W/m2, and the irradiation time to be 300 hours, calculating the retention rate of the impact strength, wherein the retention rate of the impact strength is (the impact strength before the test-the impact strength after the test)/the impact strength before the test multiplied by 100%, and the higher the retention rate of the impact strength, the better the aging resistance. The test results are shown in table 4:

TABLE 4

As is apparent from Table 4, the impact strength retention rates of examples 1 to 4 of the present invention are higher than those of the comparative examples, indicating that the aging resistance of the present invention is better. The parts of the components of the reference examples 1-3 are different from those of the reference example 1, wherein the impact strength retention rate of the reference example 1 is reduced a lot, which shows that the composite coupling agent can effectively improve the aging resistance; the impact strength retention rates of reference examples 2 and 3 are almost the same as those of examples 1 to 4, which shows that the Si-Al-Yb composite oxide has almost no influence on the aging resistance.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (7)

1. An insulated wallboard material, characterized in that: the composition comprises the following components in parts by weight: 100 parts of polystyrene, 1-2 parts of stabilizer, 7-10 parts of flame retardant, 2-3 parts of foaming agent, 0.3-0.6 part of mildew inhibitor, 0.5-1 part of lubricant, 11-15 parts of silicon-aluminum-ytterbium composite oxide and 0.5-0.9 part of composite coupling agent;

the preparation method of the silicon-aluminum-ytterbium composite oxide comprises the following steps:

stirring tetraethoxysilane, absolute ethyl alcohol and polyethylene glycol in a weight ratio of 1:30:0.1 until the mixture is uniformly mixed to obtain a solution A, adding aluminum nitrate into 20 times of absolute ethyl alcohol in weight ratio, stirring until the mixture is uniformly mixed to obtain a solution B, adding ytterbium nitrate into 20 times of absolute ethyl alcohol in weight ratio, stirring until the mixture is uniformly mixed to obtain a solution C, mixing the solution A, the solution B and the solution C in a weight ratio of 40:40:1, stirring for 5 hours to form sol, aging for 5 hours to obtain wet gel, drying the wet gel at 140 ℃ for 15 hours to obtain dry gel, putting the dry gel into a muffle furnace, calcining for 2.5 hours at 600 ℃, cooling to room temperature, taking out, and grinding to obtain silicon-aluminum-ytterbium composite oxide;

the preparation steps of the composite coupling agent are as follows:

adding silane KH550 into 10 times of anhydrous ethanol by weight, stirring for 1 hour at 45 ℃ to obtain a solution D, mixing stearic acid and aluminum isopropoxide by weight, reacting for 3 hours at 135 ℃ and under the vacuum degree of 0.098MPa to obtain a reactant, adding the reactant into 10 times of anhydrous ethanol by weight, stirring for 1 hour at 45 ℃ to obtain a solution E, mixing the solution D and the solution E by weight, stirring for 2 hours at 55 ℃ to obtain a product, filtering the product, and drying to obtain the composite coupling agent.

2. An insulated wall panel material according to claim 1, wherein: the stabilizer is barium stearate.

3. An insulated wall panel material according to claim 1, wherein: the flame retardant is magnesium hydroxide.

4. An insulated wall panel material according to claim 1, wherein: the foaming agent is pentane.

5. An insulated wall panel material according to claim 1, wherein: the mildew preventive is 8-hydroxyquinoline copper.

6. An insulated wall panel material according to claim 1, wherein: the lubricant is PE wax.

7. The method of manufacturing a thermal insulating wallboard material according to any one of claims 1 to 6, wherein: the method comprises the following steps:

(1) weighing the components in parts by weight, adding the composite coupling agent into 9 times of anhydrous ethanol by weight, stirring until the components are uniformly mixed to obtain a coupling agent solution, adding the flame retardant and the silicon-aluminum-ytterbium composite oxide into the coupling agent solution, stirring for 3 hours, taking out and drying to obtain a mixture;

(2) adding the mixture obtained in the step (1) and other components into a stirrer, and stirring for 1 hour to obtain a mixture;

(3) and (3) adding the mixture obtained in the step (2) into an extruder, extruding at the screw rotation speed of 500-600rpm at 230 ℃ to obtain an extruded material, granulating the extruded material, and drying to obtain the heat-insulating wallboard material.