Wear-resistant and stain-resistant petg composite material and application thereof in preparation of furniture building materials

Abstract

The application discloses a wear-resistant and stain-resistant PETG composite material and application thereof in the preparation of furniture and building materials, and belongs to the technical field of high polymer materials. The PETG composite material contains the following components in parts by mass: 40-50 parts of PETG, 30-36 parts of PCTG, 20-28 parts of PC, 10-15 parts of poly(4-vinyl-tert-butyl benzoate), 1-3 parts of a coupling agent, 6-12 parts of an antioxidant, 2-3 parts of an ultraviolet absorber, and 40-60 parts of silicon dioxide. The PETG composite film prepared from the PETG composite material has excellent longitudinal and transverse tensile strengths and excellent wear resistance and stain resistance, and can be used for preparing flat sticking films, high-gloss films, protective films, matte films and / or skin feeling films for furniture and building materials.

Description

Technical Field

[0001] This invention belongs to the field of polymer materials technology, specifically relating to a wear-resistant and stain-resistant PETG composite material and its application in the preparation of flat films, high-gloss films, protective films, matte films and / or skin-feel films for furniture and building materials. Background Technology

[0002] PETG (polyethylene terephthalate-1,4-cyclohexanediethanol) is a transparent, amorphous copolyester with excellent physical and chemical properties. It is synthesized by transesterification polymerization of three monomers: terephthalic acid (PTA), ethylene glycol (EG), and 1,4-cyclohexanediethanol (CHDM). Due to its good transparency, gloss, toughness, impact strength, and chemical resistance, PETG is widely used in various fields.

[0003] In the furniture and building materials industry, traditional decorative materials often suffer from insufficient wear resistance and stain resistance. These materials are prone to wear and scratches during long-term use and are difficult to clean and maintain, affecting their overall aesthetics and lifespan. Therefore, developing a new composite material that is both wear-resistant and stain-resistant is of great significance for improving the performance and quality of furniture and building materials.

[0004] PETG material, due to its unique properties, has become a potential solution to this problem. PETG not only possesses excellent transparency and gloss, enabling realistic visual effects and a luxurious texture, but also exhibits good heat and cold resistance, adapting to the needs of use in various climatic conditions. Furthermore, PETG material is fingerprint-resistant and oil-resistant, not easily attracting fingerprints and stains, and easy to clean and maintain. These characteristics make PETG a promising candidate for application in the furniture and building materials industry.

[0005] However, pure PETG material may still have certain limitations in some specific applications, such as insufficient hardness and easy scratching.

[0006] In conclusion, developing a wear-resistant and stain-resistant PETG composite material and applying it to the preparation of decorative materials for furniture and building materials can not only improve the aesthetics and service life of products, but also meet the market demand for high-quality furniture and building materials. The research and application of this composite material will be of great significance in promoting technological progress and industrial upgrading in the furniture and building materials industry. Summary of the Invention

[0007] To address the shortcomings of existing technologies, the present invention aims to provide a PETG composite material that is wear-resistant and stain-resistant. By compounding and modifying PETG with other polymers, its comprehensive performance can be further improved, meeting the high requirements of the furniture and building materials industry for wear-resistant and stain-resistant properties.

[0008] To achieve the above objectives, the present invention discloses the following technical solutions:

[0009] In a first aspect, the present invention provides a wear-resistant and stain-resistant PETG composite material, wherein the PETG composite material comprises the following components by mass parts:

[0010] PETG 40-50 servings;

[0011] PCTG 30-36 copies;

[0012] PC 20-28 copies;

[0013] Poly(tert-butyl 4-vinylbenzoate) 10-15 parts;

[0014] 1-3 parts coupling agent;

[0015] Antioxidant 6-12 parts;

[0016] 2-3 parts of UV absorber;

[0017] 40-60 parts of silicon dioxide.

[0018] Preferably, the coupling agent is selected from at least one of neoalkoxytris(dioctylpyrophosphoryloxy)titanate, tetraisopropoxybis(dioctylphosphite)titanate, and isopropyltris(dioctylpyrophosphoryloxy)titanate.

[0019] Preferably, the antioxidant is selected from at least one of antioxidant DSTDP, antioxidant 1010, and antioxidant DLTDP.

[0020] Preferably, the ultraviolet absorber is selected from ultraviolet absorber UV-531 and / or ultraviolet absorber UV-329.

[0021] Preferably, the silica is ultrafine silica powder with a particle size ≤ 2.6 μm.

[0022] Secondly, the present invention provides a method for preparing the PETG composite material described in the first aspect, the method comprising the following steps:

[0023] (1) Preparation of materials: Weigh PETG, PCTG, PC, poly(4-vinyl tert-butyl benzoate), coupling agent, antioxidant, silica and ultraviolet absorber according to the formula amount;

[0024] (2) Mixing: First, PETG, PCTG, PC and poly(4-vinyl tert-butyl benzoate) are placed in a dryer and dried at 70°C for 12 hours to obtain the dried base material. Then, the dried base material, coupling agent, antioxidant and UV absorber are added to the mixer in sequence and stirred for 30 minutes. Then, silica is added and the mixture is stirred for another 30 minutes to obtain the mixture.

[0025] (3) Granulation: The mixture from step (2) is melt-extruded on a twin-screw extruder. The mixture is extruded into strips at an extrusion temperature of 250°C and a screw speed of 200 r / min. Then, it is water-cooled and pelletized to obtain the PETG composite material.

[0026] Thirdly, the present invention provides a wear-resistant and stain-resistant PETG composite film, wherein the PETG composite film comprises the wear-resistant and stain-resistant PETG composite material described in the first aspect.

[0027] Fourthly, the present invention provides the application of the wear-resistant and stain-resistant PETG composite film described in the third aspect in the preparation of flat films, high-gloss films, protective films, matte films and / or skin-feel films for furniture and building materials, which have wear-resistant and / or stain-resistant properties.

[0028] In this invention:

[0029] PETG and PCTG, as copolyester materials, possess excellent toughness and abrasion resistance. The addition of polycarbonate (PC) further enhances the abrasion resistance of the material, as PC itself has extremely high abrasion resistance and toughness. Poly(tert-butyl 4-vinylbenzoate), as a high-performance polymer, plays multiple roles in the PETG system. First, it significantly improves the chemical stability and hydrophobicity of PETG, enhancing the composite material's resistance to acids, alkalis, and organic solvents, thereby improving the stain resistance of the PETG system and making it less susceptible to staining. Second, the addition of poly(tert-butyl 4-vinylbenzoate) can improve the physical properties of PETG plastics, such as tensile strength, making it less prone to breakage or damage under external forces. In addition, poly(tert-butyl 4-vinylbenzoate) can also enhance the thermal properties of the PETG system, increasing its glass transition temperature (Tg), making it suitable for various processing techniques, and improving thermal stability, enabling it to withstand higher temperature environments. This invention has found that the polymer system composed of PETG, PCTG, PC and poly(4-vinyl tert-butyl benzoate) exhibits excellent tensile strength and stain resistance, and relatively low wear, indicating that this compound provides good mechanical properties and stain resistance.

[0030] The beneficial effects of this invention are:

[0031] The PETG composite film made from the PETG composite material provided by this invention has excellent longitudinal and transverse tensile strength, as well as excellent wear resistance and stain resistance. It can be used to prepare flat films, high-gloss films, protective films, matte films and / or skin-feel films for furniture and building materials, which have wear resistance and / or stain resistance. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0033] The technical solution of the present invention will be further described in detail below with reference to specific embodiments. It should be understood that the following embodiments are only used to explain the present invention and are not intended to limit the present invention.

[0034] In this invention:

[0035] PETG: Purchased from Shanghai Huachang Trading Co., Ltd.;

[0036] PCTG: Model TX1001, purchased from Yihongdi New Material Technology (Shanghai) Co., Ltd.;

[0037] PC: Model PC-122, purchased from Qingdao Zhongxin Huamei Plastics Co., Ltd.;

[0038] Poly(4-vinyl tert-butyl benzoate): purchased from Hangzhou Yuhao Chemical Technology Co., Ltd.;

[0039] PMMA: Polymethyl methacrylate, purchased from Shanghai Huachang Trading Co., Ltd.

[0040] Coupling agents: Neoalkoxytris(dioctylpyrophosphoryloxy)titanate, tetraisopropoxybis(dioctylphosphite)titanate and isopropyltris(dioctylpyrophosphoryloxy)titanate were all purchased from Nanjing Nengde New Material Technology Co., Ltd.

[0041] Antioxidants: Antioxidant DSTDP, antioxidant 1010 and antioxidant DLTDP were all purchased from Tianjin Lisheng Chemical Co., Ltd.

[0042] UV absorbers: UV-531 and UV-329, purchased from Tianjin Lisheng Chemical Co., Ltd.

[0043] Silica: Model J-181, ultrafine silica powder, particle size ≤2.6μm, purchased from Jinchun Silicon Materials Co., Ltd.

[0044] Other raw materials are all commercially available.

[0045] Preparation of PETG composite film:

[0046] (1) Preparation of materials: Weigh PETG, PCTG, PC, poly(4-vinyl tert-butyl benzoate), coupling agent, antioxidant, silica and ultraviolet absorber according to the mass ratio in Table 1.

[0047] (2) Mixing: First, PETG, PCTG, PC and poly(4-vinyl tert-butyl benzoate) are placed in a dryer and dried at 70°C for 12 hours to obtain the dried base material. Then, the dried base material, coupling agent, antioxidant and UV absorber are added to the mixer in sequence and stirred for 30 minutes. Then, silica is added and the mixture is stirred for another 30 minutes to obtain the mixture.

[0048] (3) Granulation: The mixture from step (2) is melt-extruded on a twin-screw extruder. The mixture is extruded into strips at an extrusion temperature of 250°C and a screw speed of 200 r / min. Then, it is water-cooled and pelletized to obtain the PETG composite material masterbatch.

[0049] (4) Molding: The PETG composite material masterbatch is dried in an oven at 60°C for 6 hours, and then injection molded using an injection molding machine at a temperature of 270°C to obtain a PETG composite film based on the PETG composite material described in step (3).

[0050] Table 1 Raw materials and their mass fractions for PETG composite materials

[0051]

[0052] Note: "-" in the table indicates no additions.

[0053] To verify the performance of the PETG composite material provided by this invention, and to verify the necessity of each raw material in the PETG composite material, composite material 2 in Table 1 was used as a basis. The raw materials were then modified by default and substitution, and a PETG composite film was prepared and its performance was tested, as follows:

[0054] Composite material 4: Based on composite material 2, PCTG is missing. The reduced mass fraction is allocated to PETG, PC and poly(4-vinyl tert-butyl benzoate) according to the mass ratio of PETG, PC and poly(4-vinyl tert-butyl benzoate) in composite material 2, as shown in Table 1. The rest is the same as composite material 2.

[0055] Composite material 5: Based on composite material 2, PC is missing. The reduced mass fraction is allocated to PETG, PCTG and poly(4-vinyl tert-butyl benzoate) according to the mass ratio of PETG, PCTG and poly(4-vinyl tert-butyl benzoate) in composite material 2, as detailed in Table 1. The rest is the same as composite material 2.

[0056] Composite material 6: Based on composite material 2, it lacks poly(4-vinyl tert-butyl benzoate). The reduced mass fraction is allocated to PETG, PCTG and PC according to the mass ratio of PETG, PCTG and PC in composite material 2, as shown in Table 1. The rest is the same as composite material 2.

[0057] Composite material 7: Based on composite material 2, keep the total amount of PETG, PCTG, PC and poly(4-vinyl tert-butyl benzoate) unchanged, and adjust the mass ratio between PETG, PCTG, PC and poly(4-vinyl tert-butyl benzoate) to 1:1:1:1, see Table 1 for details, the rest is the same as composite material 2;

[0058] Composite material 8: Based on composite material 2, keep the total amount of PETG, PCTG, PC and poly(4-vinyl tert-butyl benzoate) unchanged, and adjust the mass ratio of PETG, PCTG, PC and poly(4-vinyl tert-butyl benzoate) to 20:1:1:1, see Table 1 for details, the rest is the same as composite material 2;

[0059] Composite material 9: Based on composite material 2, replace poly(4-vinyl tert-butyl benzoate) with PMMA (polymethyl methacrylate), and the rest is the same as composite material 2.

[0060] Performance testing

[0061] The PETG composite films prepared from PETG composite materials 1-9 (corresponding to Examples 1-9 in Table 2) were subjected to the following tests, and the test results are shown in Table 2.

[0062] Tensile strength test: The test shall be conducted in accordance with the method in GB / T 25255-2010;

[0063] Stain resistance test: Write on the PETG composite film with Deli 6824 marker, wait for 1 minute, and then wipe with a lint-free cloth and / or a lint-free cloth dampened with alcohol. The film that can be wiped clean directly with a lint-free cloth is excellent; the film that cannot be wiped clean with a lint-free cloth but can be wiped clean with a lint-free cloth dampened with alcohol is good; the film that cannot be wiped clean even with a lint-free cloth dampened with alcohol is poor.

[0064] Abrasion resistance test: Abrasion resistance test shall be conducted in accordance with the method in GB / T 1768-2006.

[0065] Table 2 Performance Test Results

[0066]

[0067] Results analysis:

[0068] As can be seen from the test data in Table 2, the PETG composite films prepared by using the PETG composite material provided by the present invention in Examples 1-3 have excellent longitudinal and transverse tensile strength, as well as excellent wear resistance and stain resistance.

[0069] As can be seen from the results of Examples 4-9, the overall performance of the composite material is significantly affected when any one of PCTG, PC, and poly(4-vinylbenzoate tert-butyl ester) is missing, or when the mass ratio of PETG, PCTG, PC, and poly(4-vinylbenzoate tert-butyl ester) is not within the range provided in this application, or when PMMA is replaced with poly(4-vinylbenzoate tert-butyl ester). This indicates that the four raw materials PETG, PCTG, PC, and poly(4-vinylbenzoate tert-butyl ester) play a key role in the formulation of this invention.

[0070] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wear and stain resistant PETG composite material, characterized in that, The PETG composite material comprises the following components by mass fraction: PETG 40-50 parts; PCTG 30-36 parts; PC 20-28 parts; Poly(4-vinyl-tert-butyl benzoate) 10-15 parts; Coupling agent 1-3 parts; Antioxidant 6-12 parts; UV absorber 2-3 parts; Silicon dioxide 40-60 parts.

2. The abrasion and stain resistant PETG composite of claim 1, wherein, The coupling agent is selected from at least one of neooxy tris(dioctyl pyrophosphato) titanate, tetraisopropoxy bis(dioctyl phosphato) titanate and isopropyl tris(dioctyl pyrophosphato) titanate.

3. The abrasion and stain resistant PETG composite of claim 1, wherein, The antioxidant is selected from at least one of antioxidant DSTDP, antioxidant 1010 and antioxidant DLTDP.

4. The abrasion and stain resistant PETG composite of claim 1, wherein, The UV absorber is selected from UV absorber UV-531 and / or UV absorber UV-329.

5. The abrasion and stain resistant PETG composite of claim 1, wherein, The silicon dioxide is superfine silicon dioxide powder with a particle size of ≤2.6 μm.

6. A method of producing the PETG composite material according to any one of claims 1 to 5, characterized in that, The preparation method comprises the following steps: (1) Preparation of materials: weigh the PETG, PCTG, PC, poly(4-vinyl-tert-butyl benzoate), coupling agent, antioxidant, silicon dioxide and UV absorber according to the formula amount; (2) Mixing: first, place the PETG, PCTG, PC and poly(4-vinyl-tert-butyl benzoate) in a dryer and dry at 70°C for 12 h to obtain the dried base material, then add the dried base material, coupling agent, antioxidant, UV absorber to the mixer in sequence, stir and mix for 30 min, then add the silicon dioxide and continue mixing for 30 min to obtain the mixed material; (3) Granulation: melt-extrude the uniformly mixed material of step (2) on a twin-screw extruder, extrude and draw under the conditions of an extrusion temperature of 250°C and a screw rotation speed of 200 r / min, then water-cool, cut into particles to obtain the PETG composite material.

7. A wear and stain resistant PETG composite film, characterized in that, The PETG composite film comprises the wear-resistant and stain-resistant PETG composite material of any one of claims 1-5.

8. Use of the wear-resistant and stain-resistant PETG composite film of claim 7 in the preparation of a flat film, high-gloss film, protective film, matte film and / or skin film for furniture and building materials, and having wear-resistant and / or stain-resistant properties.

Images