WO2014012199A1

WO2014012199A1 - Nonmetallic thermoplastic composite material curtain wall board for building decoration and preparation method therefor

Info

Publication number: WO2014012199A1
Application number: PCT/CN2012/001604
Authority: WO
Inventors: 池立群
Original assignee: 上海琥达投资发展有限公司; 青海西旺高新材料有限公司
Priority date: 2012-07-16
Filing date: 2012-11-30
Publication date: 2014-01-23
Also published as: CN102733538B; CN102733538A

Abstract

A nonmetallic thermoplastic composite material curtain wall board for building decoration and a preparation method therefor. The curtain wall board comprises a shell made from a nonmetallic thermoplastic composite material through integral injection molding and a flame retarding foam material main body injected into the shell by pressure. The composite material comprises the following raw materials in weight percentage: 53%-57% reinforcing agent, 15%-35% polypropylene, 1%-5% flow modifying agent, 2%-4% titanium pigment and 1%-3% antioxidant. The reinforcing agent is silicon dioxide, inorganic microfiber or a mixture of them. The curtain wall board has advantages of high strength, high hardness, light weight, corrosion resistance, age resistance, heat preservation, flaming retardant, simple installation and obvious energy economic effect.

Description

Technical field

The invention relates to the technical field of building materials, in particular to a thermoplastic non-metal composite curtain wall panel for building decoration and a preparation method thereof. Background technique

Resolving the waterproof and thermal insulation of building walls is the direction of long-term efforts. Traditional building materials, such as concrete, brick, asphalt linoleum, polymer board, etc., their waterproof performance and thermal insulation performance are single, it is difficult to balance waterproof and thermal insulation, and the thermal conductivity of these materials is relatively large, which is extremely unfavorable. Energy saving in buildings. In addition, the traditional building materials are relatively heavy, which is not conducive to reducing the weight of the wall, especially the partition wall and the filled wall need to reduce the weight. In recent years, a variety of composite walls have been developed, but the level is too much and the construction is complicated. Disclosure of invention

The invention provides a curtain wall panel for building decoration with flame retardant, heat preservation and waterproof performance, which is light in weight, high in hardness and strength, and simple in construction.

To achieve the above object, the present invention provides a thermoplastic non-metallic composite curtain wall panel comprising a housing molded and integrally molded from a thermoplastic non-metallic composite material, and a flame-retardant foam injected into the casing. The main body of the material, the insulating foam material is injected into the casing and integrated with the casing, which is more firm. Do not use glue to bond, avoid the glue to be used after a period of time. The composite contains the following raw materials by weight:

Enhancer 53%~ 73%;

Polypropylene 15% ~ 35%;

Flow modifier 1% ~ 5%;

Titanium dioxide 2% ~ 4%;

Antioxidant 1% ~ 3°/. ;

The reinforcing agent is silica or inorganic microfibers or a mixture of the two.

Confirmation The above-mentioned thermoplastic non-metallic composite curtain wall panel for architectural decoration, wherein the composite material further comprises 4-6% by weight of maleic anhydride-modified polypropylene. The maleic anhydride-modified polypropylene is obtained by reactive extrusion-grafting of maleic anhydride onto polypropylene, and maleic anhydride graft polymerization is introduced due to the introduction of strong polar side groups on the non-polar molecular backbone. Propylene can be a bridge to improve the adhesion and compatibility of polar and non-polar materials. The addition of maleic anhydride-modified polypropylene in the production of filled polypropylene greatly improves the affinity of the filler to polypropylene and the dispersibility of the filler. Therefore, the dispersion of the filler in the polypropylene can be effectively enhanced, thereby improving the tensile and impact strength of the filled polypropylene.

The above-mentioned thermoplastic non-metallic composite curtain wall panel for building decoration, wherein the polypropylene is preferably high-strength and high-hardness polypropylene, and the technical indexes thereof are: a flexural modulus greater than 2100, a heat distortion temperature greater than 135 ° C, and a melting index About 20 polypropylene. The high strength and high hardness polypropylene can greatly improve the strength and hardness of the curtain wall panel.

The above-mentioned thermoplastic non-metallic composite curtain wall panel for building decoration, wherein the composite material further comprises 4-6% by weight of high-melting finger polypropylene, and the high-melting index polypropylene means that the melt index is not lower than 100 polypropylene, which acts to make the composite have a high gloss surface and improve the fluidity of the composite.

The above-mentioned thermoplastic non-metallic composite curtain wall panel for building decoration, wherein the inorganic microfiber refers to wollastonite having an aspect ratio of 6 to 12:1. The addition of wollastonite is beneficial to improve the surface properties of materials such as finish, pollution resistance, corrosion resistance, etc. Reasonable high filling is beneficial to improve the temperature resistance of materials to a certain extent.

The above-mentioned thermoplastic non-metallic composite curtain wall panel for building decoration, wherein the curtain wall panel casing comprises a decorative surface and a joint surface. Among them, the connecting surface is rattan or strip, and the decorative surface is smooth and flat, which can be decorated by inkjet, spray, inlay and engraving. This structure saves raw materials, reduces the weight of the curtain wall panels, and reduces energy consumption.

The above-mentioned thermoplastic non-metallic composite curtain wall panel for architectural decoration, wherein the flame-retardant foam material refers to a phenol resin, which can be cured at room temperature and has a light weight.

Preferably, the flow modifier is a modified ethylene bis fatty acid imide.

Since the tertiary carbon atom in the polypropylene macromolecular chain is very sensitive to oxygen attack, it is easily aged under the action of oxygen in light, heat and air, so the composite material of the invention also incorporates an antioxidant to suppress the aging process, and can Anti-UV radiation, resistant to sunlight. Preferably, the antioxidant is an antioxidant 1010. The invention also provides the above-mentioned preparation method of the thermoplastic non-metal composite curtain wall panel for building decoration, which comprises the following specific steps:

Step 1, according to the formula amount, the reinforcing agent, the polypropylene, the flow modifier, the titanium dioxide and the antioxidant are mixed and stirred uniformly in the mixer;

Step 2, adding the above mixed raw material to the hopper of the twin-screw extruder and heating and molding; Step 3, extruding the heated strip-shaped composite material by the extruder, and cooling the composite material; Step 4, The strip-shaped composite material after cooling is placed in a granulator and processed into granular composite particles;

Step 5, putting the composite particles into an oven and heating and drying;

Step 6, adding the dried composite particles to the barrel of the injection molding machine, heating to melt the composite material particles, and then injecting the molten composite material in the barrel into the metal mold;

Step 7, injecting cooling water into the cold runner of the metal mold to cool and shape the product; Step 8, opening the mold, and taking out the formed curtain wall panel;

Step 9. Pressing the liquid foam into the above casing, curing at room temperature for 3-8 minutes, and molding, to obtain an outer wall panel.

Further, in the step 6, the injection molding machine uses a piston type barrel to inject the molten composite material into the metal mold of the product by high pressure.

The cooling water temperature in the step 7 is 5 ° C ~ 10 ° C.

The curtain wall panel of the invention is made of inorganic reinforcing agent and polypropylene as main raw materials, and is made into composite material particles by an extruder and a granulator, and is heated and melted, and the molten composite material particles are injected into the mold by a high pressure by an injection molding machine, and cooled. After the production. The preparation method provided by the invention has easy availability of raw materials, the preparation process does not require high energy consumption and long-time firing, the energy consumption is greatly reduced, the degree of mechanical automation is high, and the labor intensity is also reduced. Compared with the conventional process, the production process is advanced, and the injection molding machine is used for injection. The product has high yield, the product is completely suitable for industrialization, large-scale production, and no defective products; and the curtain wall panel obtained by using the composite material and the preparation method of the invention can be made into a smooth and smooth surface, or made into a natural stone, according to requirements. Wood grain, metal plate, etc. with three-dimensional sensory decorative effect, non-staining, waterproof, high strength, high hardness, light weight, anti-corrosion, anti-aging, and heat-insulating and flame-retardant, easy to install, used for building materials The energy saving effect of the external wall is obvious. Moreover, the curtain wall panel material of the present invention can be recycled, energy efficient and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an illustration of the assembly of a thermoplastic non-metallic composite curtain wall panel for architectural decoration of the present invention. The best way to implement the invention

The technical solutions of the present invention are further described below in conjunction with the accompanying drawings and embodiments.

The preparation method of the thermoplastic non-metal composite curtain wall panel for building decoration adopting the invention mainly comprises the following steps:

Step 2, adding the above mixed raw material to the hopper of the twin-screw extruder and heating and molding; Step 3, extruding the heated strip-shaped composite material by the extruder, and cooling the composite material; Step 4, The strip-shaped composite material after cooling is placed into a pelletized composite particle in a granulator;

Step 5, putting the composite particles into an oven and heating and drying;

Step 6, adding the dried composite particles to the barrel of the injection molding machine, heating and melting, inputting into the computer control program of the injection molding machine according to the material amount of the single product to be produced, starting the injection molding machine injection control program, using the injection screw Advancing the injection of the composite material into the metal mold of the curtain wall panel, wherein the injection molding machine is injected into the metal mold of the curtain wall panel by high pressure using a piston barrel;

Step 7, injecting 5 ° C ~ 10 ° C cooling water into the cold runner of the metal mold to cool the product;

Step 8, opening the mold, and taking out the formed curtain wall panel housing;

Step 9. Inject a liquid foam material (such as a phenolic resin foam) into the above casing, and cure it at room temperature for 3-8 minutes, and then form a curtain wall panel.

The curtain wall panel of the present invention comprises a housing molded by injection molding of a thermoplastic non-metal composite material, and a flame-retardant foam material body injected into the casing, wherein the heat-insulating foam material is injected into the casing and connected to the casing. One, more solid. Do not use glue to bond, avoid the glue to be used after a period of time. The housing of the curtain wall panel of the present invention is composed of a decorative surface 33 (exposed to the outside), and a connecting surface 34 (not exposed), as shown in FIG. 1, wherein the connecting surface 34 is connected to the wall and/or Connection surface to the side of other curtain wall panels. Example 1-12

Table 1: The following are examples of different formulations 1-12

According to the formula amount of Table 1, the above raw materials are thoroughly mixed and stirred uniformly in a mixer, and the mixed raw materials are quantitatively added into the hopper of the twin-screw extruder through the feeding port and the bypass feeding port, and heated and formed; then passed through the extruder. Extruding the strip-shaped composite material after heating, and placing the strip-shaped composite material in a water tank to room temperature; and cooling the strip-shaped composite material into a granulator for processing into a pellet Granular composite particles; the composite particles are heated and dried in an oven at 100 ° C to 120 ° C to remove moisture; the dried composite particles are added to the barrel of the injection molding machine, and the heating is performed. The composite material particles are melted, input into the computer control program of the injection molding machine according to the material amount of the individual product to be produced, start the injection molding machine injection control program, and use the injection screw to push the composite material in the barrel into the metal mold of the curtain wall board. The injection molding machine uses a piston barrel to be injected into the metal mold of the curtain wall plate by high pressure; injecting cooling water of 5 ° C to 10 ° C into the cold runner of the metal mold to cool the product, open the mold, and use The robot removes the molded siding shell. Then, a liquid foam material (such as a phenolic resin foam) is injected into the above casing, and after curing at room temperature for 3-8 minutes, it is molded to obtain a curtain wall panel.

Example 1-3 is a basic formula, and the obtained curtain wall plate is light in weight, high in impact resistance and compressive strength, smooth in surface, self-cleaning, high in temperature resistance, sunlight resistant, and corrosion resistant; and has a marble texture. Can meet the basic requirements required for curtain wall panels.

Further, the characteristics of the high strength and high hardness of the curtain wall panel obtained in the embodiment 4-6 are outstanding.

Further, the high surface hardness characteristics of the curtain wall panels produced in Examples 7-9 were outstanding.

Further, the high-gloss surface characteristics of the curtain wall panel produced in Examples 10-12 are more prominent.

In some more preferred embodiments, the decorative surface of the curtain wall panel also adopts 3D inkjet technology, which can truly display the texture of wood grain, marble pattern, tile, granite, etc., and then the surface is imported with anti-aging, anti-UV and weather resistance. The coating is coated to break the current situation that the exterior façade of the building has a single color and a lack of three-dimensionality, which can make the facade of the building rich and colorful, realistically display the aesthetic effect of various decorative materials, and is easy to install and light in weight. , can maximize the steel used in the structure and reduce the cost. In addition, fluorocarbon coating and metal powder coating can also be used on the decorative surface of the curtain wall panel to achieve the effect of the metal curtain wall panel.

A schematic view of the assembly of a thermoplastic non-metallic composite curtain wall panel for building decoration of the present invention is shown in FIG. 1. First, the connecting member 20 is fixed to the wall 10 by a plurality of embedded members 11, and the connecting member 20 is mounted on the connecting member 20. There is a plurality of stainless steel corners 21, which are fixed on the connecting member by stainless steel bolts. The corner 21 and the curtain wall connecting piece 22 are fixed by stainless steel screws 23. The curtain wall panel 30 of the present invention is provided with a plurality of apertures 31, and the curtain wall is connected. The sheet 22 is connected to the connecting member 20 via the gap 31, and is sealed by a sealant 32 at the joint between the curtain wall and the connecting piece to avoid water leakage. The connector may be channel steel, D-shaped steel or a connector made of the composite material provided by the present invention. The method for installing the curtain wall panel of the invention is simple and convenient for construction. The composite material and method provided by the invention are not limited to the preparation method of the curtain wall panel, and can also be used for the preparation of cabinets such as outdoor products, pipes, landscape craft decoration products, outdoor power distribution cabinets and the like.

Although the present invention has been described in detail by the preferred embodiments thereof, it should be understood that the foregoing description should not be construed as limiting. Various modifications and alterations of the present invention will be apparent to those skilled in the art. Therefore, the scope of the invention should be limited by the appended claims.

Claims

Rights request

A thermoplastic non-metallic composite curtain wall panel for architectural decoration, characterized in that the curtain wall panel comprises a housing molded by injection molding of a thermoplastic non-metallic composite material, and a flame-retardant foam material body injected into the housing. ;

The composite comprises the following raw materials by weight:

Enhancer 53% ~ 73%;

Polypropylene 15% ~ 35%;

Flow modifier 1%~ 5%;

Titanium dioxide 2% ~ 4%;

Antioxidant 1% ~ 3%;

2. The thermoplastic non-metallic composite curtain wall panel for building decoration according to claim 1, wherein the polypropylene is a high-strength and high-hardness polypropylene, and the technical index thereof is: a flexural modulus greater than 2100, a heat distortion temperature Polypropylene having a melt index of 20 or more.

3. The thermoplastic non-metallic composite curtain wall panel for building decoration according to claim 1, wherein the composite material further comprises 4-6% by weight of maleic anhydride-modified polypropylene.

4. The thermoplastic non-metallic composite curtain wall panel for building decoration according to claim 1, wherein the composite material further comprises 4-6% by weight of high-melting polypropylene, the high melting index Polypropylene refers to polypropylene having a melt index of not less than 100.

The thermoplastic non-metallic composite curtain wall panel for building decoration according to claim 1, wherein the inorganic microfiber refers to wollastonite having an aspect ratio of 6 to 12:1.

The thermoplastic non-metallic composite curtain wall panel for building decoration according to any one of claims 1 to 5, wherein the curtain wall panel housing comprises a decorative surface (33) and a connecting surface (34), Among them, the decorative surface (33) is a smooth flat plate, and the connecting surface (34) is a rattan or strip-shaped plane.

The thermoplastic non-metallic composite curtain wall panel for architectural decoration according to claim 6, wherein the flame-retardant foaming material refers to a phenol resin.

A method of preparing a thermoplastic non-metallic composite curtain wall panel for building decoration according to claim 1, wherein the method comprises the following specific steps:

Step 1, the amount of the raw material according to claim 1, the reinforcing agent, the polypropylene, the flow modifier, the titanium dioxide and the antioxidant are mixed and stirred uniformly in the mixer;

Step 2, adding the above mixed raw materials to the hopper of the twin-screw extruder, and heating and molding; Step 3, extruding the strip-shaped composite material after heating and forming by the twin-screw extruder, and cooling the composite material;

Step 4, adding the strip-shaped composite material after cooling to the granulator to process the composite particles into particles;

Step 5, placing the composite particles in an oven and heating and drying;

Step 6, adding the dried composite particles to the barrel of the injection molding machine, heating to melt the composite particles, and injecting the composite material in the barrel into the mold of the curtain wall panel by using an injection molding machine;

Step 7, inject cooling water into the cold runner of the mold to cool the product; Step 8, open the mold, and take out the formed curtain wall panel;

Step 9. Pressing the liquid foam material into the above casing and solidifying at room temperature to obtain a curtain wall panel.