Resin composition as well as preparation method and application thereof

Abstract

The invention relates to the technical field of vehicle interior materials, in particular to a resin composition as well as a preparation method and application thereof. The resin composition comprises the following components in parts by weight: 100 parts by weight of polyvinyl chloride resin, 50-95 parts by weight of a plasticizer, 2-20 parts by weight of a lead salt heat stabilizer, 0.05-1 part by weight of stearic acid, 0.1-1 part by weight of a light stabilizer, 0.5-3 parts by weight of an impact-resistant aid, 0.05-0.5 part by weight of a surface dispersant, 0.5-4 parts by weight of a flame retardant, 0.1-1 part by weight of an antioxidant and 0.6-3 parts by weight of an amine-resistant agent. According to the resin composition provided by the invention, the formula is improved, and the synergistic effect among the components is utilized, so that the prepared resin composition has excellent amine resistance, heat aging resistance and light aging resistance on the basis of the advantages of high strength, light weight, easiness in cleaning, low cost and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle interior materials, and in particular to a resin composition, a preparation method and application thereof. Background Art

[0002] At present, the covering fabrics of car sun visors on the market are mainly knitted fabrics and PVC fabrics. Based on manufacturing cost considerations, lightweight PVC leather is generally used as the covering fabric, which has the advantages of high strength, light weight, easy cleaning and low cost.

[0003] However, with the rapid growth of China's automobile exports, due to the great differences in climate and environment in overseas regions, the performance verification in the product development process has failed to fully simulate the actual overseas vehicle operating conditions. In some areas, under high temperature conditions in the car, the PVC leather covering of the sun visor is prone to discoloration, seriously affecting the aesthetic effect of the sun visor, leading to market batch claims and user complaints. This is mainly caused by the insufficient amine resistance, heat resistance and light aging resistance of the PVC leather covering of the sun visor.

[0004] Therefore, in view of the shortcomings of domestic products in adaptability to overseas environments, it is increasingly important to develop a sun visor covering fabric with overseas environmental resistance. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a resin composition and a preparation method and application thereof.

[0006] In a first aspect, the present invention provides a resin composition, wherein the resin composition comprises the following components in parts by weight:

[0007]

[0008]

[0009] As a preferred technical solution of the present invention, the resin composition comprises the following components in parts by weight:

[0010]

[0011] As a preferred technical solution of the present invention, the resin composition further comprises 0.5-4 parts by weight of a colorant.

[0012] As a preferred technical solution of the present invention, the resin composition comprises the following components in parts by weight:

[0013]

[0014]

[0015] As a preferred technical solution of the present invention, the lead salt heat stabilizer includes any one or more of tribasic lead sulfate, tribasic lead phthalate, dibasic lead phosphite and dibasic lead stearate.

[0016] As a preferred technical solution of the present invention, the lead salt heat stabilizer is selected from 928CZ.

[0017] As a preferred technical solution of the present invention, the light stabilizer includes 2-hydroxy-4-methoxybenzophenone (UV-530) and / or 2-hydroxy-4-n-octyloxybenzophenone (UV-531).

[0018] As a preferred technical solution of the present invention, the light stabilizer is selected from 2-hydroxy-4-n-octyloxybenzophenone (UV-531).

[0019] As a preferred technical solution of the present invention, the plasticizer includes any one or more of triphenyl plasticizers, phthalate plasticizers and cyclohexane dicarboxylate plasticizers.

[0020] As a preferred technical solution of the present invention, the plasticizer is selected from the combination of di(2-propylheptyl)phthalate (DPHP) and diester phthalate (911P).

[0021] As a preferred technical solution of the present invention, the mass ratio of di(2-propylheptyl)phthalate to diester phthalate is 5:3.

[0022] As a preferred technical solution of the present invention, the impact-resistant additive includes an acrylate compound.

[0023] As a preferred technical solution of the present invention, the impact-resistant additive is selected from P-530A.

[0024] As a preferred technical solution of the present invention, the surface dispersant includes polyvinyl chloride wax, such as 316A.

[0025] As a preferred technical solution of the present invention, the flame retardant includes ZCFR-202 and / or antimony trioxide.

[0026] As a preferred technical solution of the present invention, the flame retardant is selected from ZCFR-202.

[0027] As a preferred technical solution of the present invention, the antioxidant includes a phosphite antioxidant.

[0028] As a preferred technical solution of the present invention, the antioxidant is selected from distearyl diphosphite (PEP-8t).

[0029] As a preferred technical solution of the present invention, the amine-resistant agent includes a perchlorate-type amine-resistant agent and / or an organotin-type amine-resistant agent.

[0030] As a preferred technical solution of the present invention, the amine-resistant agent is selected from perchlorate-based organic phosphorous amine-resistant agent (609KP).

[0031] As a preferred technical solution of the present invention, the colorant includes any one or more of titanium dioxide, carbon black, iron red and chromium antimony titanium yellow powder.

[0032] In a second aspect, the present invention provides a method for preparing the resin composition described in the first aspect, the preparation method comprising: uniformly mixing the components of the formula, and then sequentially performing plasticization, calendering, and matting treatment to obtain the resin composition.

[0033] As a preferred technical solution of the present invention, the temperature during mixing is 78-82°C.

[0034] As a preferred technical solution of the present invention, the plasticizing method is: using a closed mixing machine for closed mixing, the closed mixing temperature is 120-150°C, and the closed mixing time is 4-6 minutes; then using a rolling mill for rolling, the start rolling temperature is 148-152°C, and the start rolling time is 25-35 minutes.

[0035] As a preferred technical solution of the present invention, filtering is performed between the plasticizing and calendering, the filtering temperature is 148-152° C., and 20-mesh, 100-mesh and 10-mesh filter screens are used in sequence for filtering, and the filtering time is 8-12 minutes.

[0036] As a preferred technical solution of the present invention, the calendering temperature is 163-167° C., the calendering rate is 33-37 m / min, and the calendering pressure is 29-31 kg.

[0037] In a third aspect, the present invention provides use of the resin composition described in the first aspect or the resin composition prepared by the preparation method described in the second aspect in an automobile sun visor.

[0038] In a fourth aspect, the present invention provides a covering fabric for a car sun visor, wherein the covering fabric for a car sun visor comprises the resin composition described in the first aspect or the resin composition prepared by the preparation method described in the second aspect.

[0039] In a fifth aspect, the present invention provides a vehicle, comprising the automobile sun visor covering fabric as described in the fourth aspect.

[0040] The technical solution provided by the embodiment of the present invention has the following advantages compared with the prior art:

[0041] The resin composition provided by the present invention improves the formula and utilizes the synergistic effect between the components, so that the prepared resin composition has excellent amine resistance, heat aging resistance and light aging resistance on the basis of having the advantages of high strength, light weight, easy cleaning and low cost, and can be applied to overseas automobile visors. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0044] Figure 1 This is a diagram of the amine resistance testing device of the present invention;

[0045] Among them, 1-sealed bottle, 2-100mL beaker, 3-150mL beaker, 4-sealed bottle closure buckle, 5-test sample, 6-tape, 7-slide.

[0046] Figure 2 This is a test diagram of the heat-sealed seam strength test of the present invention. DETAILED DESCRIPTION

[0047] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the scheme of the present invention will be further described below. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0048] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present invention, rather than all of the embodiments.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0050] At present, the covering fabrics of automobile sun visors on the market are mainly knitted fabrics and PVC fabrics. Based on manufacturing cost considerations, lightweight PVC leather is generally used as the covering fabric. With the rapid growth of China's automobile exports, due to the great differences in climate and environment in overseas regions, the performance verification in the product development process has failed to fully simulate the actual overseas vehicle operating conditions. In some areas, under high temperature conditions in the car, the PVC leather covering fabric of the sun visor is prone to discoloration, leading to market batch claims and user complaints. The main reason is that the PVC leather covering fabric of the sun visor is insufficient in amine resistance, heat resistance, and light aging resistance. Therefore, in order to meet the environmental adaptability of overseas sun visors, the embodiment of the present invention provides a resin composition, a preparation method and an application thereof.

[0051] First, an embodiment of the present invention provides a resin composition, comprising the following components in parts by weight:

[0052]

[0053] The amount of plasticizer may be 50 parts by weight, 60 parts by weight, 70 parts by weight, 80 parts by weight, 90 parts by weight, 95 parts by weight, etc. However, the present invention is not limited to the values ​​listed, and other values ​​not listed within the range are also applicable.

[0054] The lead salt heat stabilizer can be 2 parts by weight, 4 parts by weight, 6 parts by weight, 8 parts by weight, 10 parts by weight, 12 parts by weight, 14 parts by weight, 16 parts by weight, 18 parts by weight, 20 parts by weight, etc. However, the present invention is not limited to the listed values, and other unlisted values ​​within the range are also applicable.

[0055] The amount of stearic acid may be 0.05 weight part, 0.1 weight part, 0.2 weight part, 0.3 weight part, 0.4 weight part, 0.5 weight part, 0.6 weight part, 0.7 weight part, 0.8 weight part, 0.9 weight part, 1 weight part, etc. However, the present invention is not limited to the values ​​listed, and other values ​​not listed within the range are also applicable.

[0056] The light stabilizer can be 0.1 parts by weight, 0.2 parts by weight, 0.3 parts by weight, 0.4 parts by weight, 0.5 parts by weight, 0.6 parts by weight, 0.7 parts by weight, 0.8 parts by weight, 0.9 parts by weight, 1 part by weight, etc. However, the present invention is not limited to the values ​​listed, and other values ​​not listed within the range are also applicable.

[0057] The amount of the impact-resistant additive can be 0.5 parts by weight, 1 part by weight, 1.5 parts by weight, 2 parts by weight, 2.5 parts by weight, 3 parts by weight, etc. However, the present invention is not limited to the values ​​listed, and other values ​​not listed within the range are also applicable.

[0058] The surface dispersant may be 0.05 weight part, 0.1 weight part, 0.2 weight part, 0.25 weight part, 0.3 weight part, 0.35 weight part, 0.4 weight part, 0.45 weight part, 0.5 weight part, etc. However, the present invention is not limited to the listed values, and other unlisted values ​​within the range are also applicable.

[0059] The flame retardant may be 0.5 parts by weight, 1 part by weight, 1.5 parts by weight, 2 parts by weight, 2.5 parts by weight, 3 parts by weight, 3.5 parts by weight, 4 parts by weight, etc. However, the present invention is not limited to the values ​​listed, and other values ​​not listed within the range are also applicable.

[0060] The antioxidant may be 0.1 parts by weight, 0.2 parts by weight, 0.4 parts by weight, 0.6 parts by weight, 0.8 parts by weight, 1 part by weight, etc. However, the present invention is not limited to the listed values, and other values ​​not listed within the range are also applicable.

[0061] The amine resistant agent can be 0.6 parts by weight, 1 part by weight, 1.2 parts by weight, 1.4 parts by weight, 1.6 parts by weight, 1.8 parts by weight, 2 parts by weight, 2.2 parts by weight, 2.4 parts by weight, 2.6 parts by weight, 2.8 parts by weight, 3 parts by weight, etc. However, the present invention is not limited to the listed values, and other values ​​not listed within the range are also applicable.

[0062] The resin composition provided in the embodiment of the present invention improves the formula and utilizes the synergistic effect between the components, so that the prepared resin composition has excellent amine resistance, heat aging resistance and light aging resistance on the basis of having the advantages of high strength, light weight, easy cleaning and low cost, and can be applied to overseas automobile sun visors, filling the gap in the covering fabrics for automobile sun visors. Specifically:

[0063] The resin composition provided in the embodiment of the present invention has been improved in formula, and its plasticity is improved by using a plasticizer while improving its heat resistance and aging resistance, and its heat resistance is further improved by adding a lead salt heat stabilizer, and its amine resistance is improved by using an amine resistance agent, and the other components work together to make the prepared resin composition have excellent amine resistance, heat aging resistance and light aging resistance on the basis of having the advantages of high strength, light weight, easy cleaning and low cost. When used as a covering fabric for automobile sun visors, it can meet the environmental adaptability of overseas sun visors. The present invention technically fills the gap in automobile sun visor covering fabrics, and provides strong technical data support for the material selection and quality control of automobile sun visor covering fabrics.

[0064] In some embodiments of the present invention, the resin composition includes the following components in parts by weight:

[0065]

[0066] In some embodiments of the present invention, the resin composition further comprises 0.5-4 parts by weight of a colorant, such as 0.5 parts by weight, 1 part by weight, 1.5 parts by weight, 2 parts by weight, 2.5 parts by weight, 3 parts by weight, 3.5 parts by weight, 4 parts by weight, etc. However, the present invention is not limited to the values ​​listed, and other values ​​not listed within the range are also applicable. The present invention can adaptively add the colorant according to actual requirements.

[0067] In some embodiments of the present invention, the resin composition includes the following components in parts by weight:

[0068]

[0069] When the content of each component is within the above range, the prepared resin composition has better amine resistance, heat aging resistance and light aging resistance.

[0070] In some embodiments of the present invention, the polyvinyl chloride resin includes any one or more of SG3, SG5, TPM-31, and TYH-2500M.

[0071] In some embodiments of the present invention, the polyvinyl chloride resin is selected from SG3.

[0072] In some embodiments of the present invention, the lead salt heat stabilizer includes any one or more of tribasic lead sulfate, tribasic lead phthalate, dibasic lead phosphite and dibasic lead stearate.

[0073] The stearic acid provided in the embodiment of the present invention is also used as a heat stabilizer, having good lubricity and good light and heat stability. The lead salt heat stabilizer and stearic acid act synergistically to effectively improve the heat aging resistance of the resin composition.

[0074] In some embodiments of the present invention, the lead salt heat stabilizer is selected from 928CZ, which can more effectively improve the heat aging resistance of the resin composition.

[0075] In some embodiments of the present invention, the light stabilizer includes 2-hydroxy-4-methoxybenzophenone (UV-530) and / or 2-hydroxy-4-n-octyloxybenzophenone (UV-531). The light stabilizer used in the embodiments of the present invention can effectively improve the light aging resistance of the resin composition.

[0076] In some embodiments of the present invention, the light stabilizer is selected from 2-hydroxy-4-n-octyloxybenzophenone (UV-531), which can more effectively improve the light aging resistance of the resin composition.

[0077] In some embodiments of the present invention, the plasticizer includes any one or more of a triphenyl plasticizer, a phthalate plasticizer, and a cyclohexane dicarboxylate plasticizer.

[0078] In some embodiments of the present invention, the plasticizer is selected from the combination of di(2-propylheptyl)phthalate (DPHP) and diester phthalate (911P).

[0079] The new plasticizer DPHP has low volatility and is more environmentally friendly. It works synergistically with 911P to significantly improve the performance of the resin composition.

[0080] In some embodiments of the present invention, the mass ratio of di(2-propylheptyl)phthalate (DPHP) to diester of phthalic acid (911P) is 5:3.

[0081] In some embodiments of the present invention, the impact-resistant additive includes an acrylic acid ester compound. The impact-resistant additive used in the embodiments of the present invention can effectively improve the impact resistance of the resin composition and avoid cracking.

[0082] In some embodiments of the present invention, the impact-resistant additive is selected from P-530A.

[0083] In some embodiments of the present invention, the surface dispersant includes polyvinyl chloride wax, such as 316A. The surface dispersant used in the embodiments of the present invention can significantly improve the plasticization of PVC and improve the mechanical strength of the product.

[0084] In some embodiments of the present invention, the flame retardant includes ZCFR-202 and / or antimony trioxide. The flame retardant used in the embodiments of the present invention can effectively improve the flame retardant properties of the resin composition.

[0085] In some embodiments of the present invention, the flame retardant is selected from ZCFR-202, so that the prepared resin composition has better thermal stability and is not easy to change color, which effectively improves the coloring power of the material and effectively reduces the production cost.

[0086] In some embodiments of the present invention, the antioxidant includes a phosphite antioxidant. The antioxidant used in the embodiments of the present invention can effectively improve the anti-oxidation performance of the resin composition.

[0087] In some embodiments of the present invention, the antioxidant is selected from dioctadecyl diphosphite (PEP-8t).

[0088] In some embodiments of the present invention, the amine resistant agent includes a perchlorate amine resistant agent and / or an organotin amine resistant agent. The amine resistant agent provided in the embodiments of the present invention can effectively improve the amine resistance of the resin composition.

[0089] In some embodiments of the present invention, the amine resistant agent is selected from a perchlorate-based organic phosphorous amine resistant agent (609KP), which has better amine resistance than organic liquid amine resistant agents and better high temperature resistance than epoxy liquid amine resistant agents, thereby more effectively improving the amine resistance and high temperature resistance of the resin composition.

[0090] In some embodiments of the present invention, the colorant includes any one or more of titanium dioxide, carbon black, iron red and chrome antimony titanium yellow powder.

[0091] Accordingly, an embodiment of the present invention provides a method for preparing a resin composition, comprising: uniformly mixing the components in the formula, and then sequentially performing plasticization, calendering, and matting treatment to obtain the resin composition.

[0092] In some embodiments of the present invention, the temperature during mixing is 78-82° C., such as 78° C., 79° C., 80° C., 81° C., 82° C., etc. However, the present invention is not limited to the listed values, and other values ​​not listed within the range are also applicable.

[0093] In the embodiment of the present invention, heating is performed during mixing, which is equivalent to pre-plasticizing while mixing, and at the same time ensures that the mixed material is uniform and dry.

[0094] In some embodiments of the present invention, the plasticizing method is: using a closed mixer for closed mixing, the closed mixing temperature is 120-150°C, and the closed mixing time is 4-6min; then using a rolling mill for rolling, the start mixing temperature is 148-152°C, and the start mixing time is 25-35min. Among them, 120-150°C can be 120°C, 125°C, 130°C, 135°C, 140°C, 145°C, 150°C, etc.; 4-6min can be 4min, 5min, 6min, etc.; 148-152°C can be 148°C, 149°C, 150°C, 151°C, 152°C, etc.; 25-35min can be 25min, 28min, 30min, 32min, 35min, etc.; but the present invention is not limited to the listed values, and other values ​​not listed within the range are also applicable.

[0095] In some embodiments of the present invention, filtration is performed between plasticization and calendering, the filtration temperature is 148-152°C, and 20 mesh, 100 mesh, and 10 mesh filter screens are used for filtration, and the filtration time is 8-12 minutes. Among them, 148-152°C can be 148°C, 149°C, 150°C, 151°C, 152°C, etc.; 8-12 minutes can be 8 minutes, 9 minutes, 10 minutes, 11 minutes, 12 minutes, etc. However, the present invention is not limited to the listed values, and other values ​​not listed in the range are also applicable.

[0096] In some embodiments of the present invention, the calendering temperature is 163-167°C, such as 163°C, 164°C, 165°C, 166°C, 167°C, etc.; the calendering rate is 33-37m / min, such as 33m / min, 34m / min, 35m / min, 36m / min, 37m / min, etc.; the calendering pressure is 29-31kg, such as 29kg, 30kg, 31kg, etc. However, the present invention is not limited to the listed values, and other values ​​not listed within the range are also applicable.

[0097] In some embodiments of the present invention, the viscosity of the material is controlled to be 50 Pa·s during extinction.

[0098] In some embodiments of the present invention, embossing treatment is performed after matting, and the surface temperature of the material during embossing is 163-167°C, such as 163°C, 164°C, 165°C, 166°C, 167°C, etc., but the present invention is not limited to the listed values, and other values ​​not listed in the range are also applicable. The speed during embossing is 10m / min.

[0099] Correspondingly, an embodiment of the present invention provides the use of the resin composition or the resin composition prepared by the preparation method in an automobile sun visor.

[0100] Correspondingly, an embodiment of the present invention provides a car sun visor covering fabric, including the resin composition or the resin composition prepared by the preparation method.

[0101] Accordingly, an embodiment of the present invention provides a vehicle, comprising the above-mentioned automobile sun visor covering fabric.

[0102] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the embodiments and drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its applications. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0103] If no specific techniques or conditions are specified in the examples, the conventional techniques or conditions in the art, or the techniques or conditions described in the literature, or the product instructions are used. If no manufacturer is specified for the reagents or instruments used, they are all conventional products that can be purchased commercially.

[0104] Example 1

[0105] This embodiment provides a resin composition and a preparation method thereof. The composition of the resin composition is shown in Table 1:

[0106] Table 1

[0107]

[0108] The preparation method comprises the following steps:

[0109] (1) Material preparation: Use an electronic analytical balance and prepare the materials according to the formula in Table 1;

[0110] (2) Mixing: The raw materials are mixed by a mixing process using a mixer. The raw materials are heated and baked to 78-82°C under high-speed stirring to perform pre-plasticization and ensure that the mixture is uniform and dry;

[0111] (3) Plasticization: The mixed material is subjected to a mixing mill for mixing at a temperature of 120-150°C for 300 seconds; the raw material is rolled by a rolling mill at a temperature of 148-152°C for 30 minutes; after plasticization and before calendering, the material is filtered by a filter at a temperature of 148-152°C and 20-mesh, 100-mesh and 10-mesh filters are used for filtering for about 8-12 minutes to ensure uniform mixing without any white or pink color.

[0112] (4) Calendering: Calender the plasticized material using a calender, with the calendering temperature set at 165±2°C, the speed set at 35±2m / min, and the calendering pressure set at 30±1kg;

[0113] (5) Matting: The calendered product is matted by a two-color machine, and the viscosity is controlled at 50 Pa·s by a viscosity cup. 。

[0114] (6) Embossing: The matte treated product is embossed by a laminating machine, and the surface temperature of the material is controlled at 165±2°C and the speed is 10m / min.

[0115] (7) Packaging: After cooling to room temperature in the air, the finished product is inspected and packaged by an inspection machine at a speed of 4-5m / min.

[0116] Embodiment 2-4

[0117] This embodiment provides a resin composition and a preparation method thereof. The materials of each component in the resin composition are the same as those in Example 1. The difference from Example 1 is that the content of each component in this embodiment is as shown in Table 2:

[0118] Table 2

[0119]

[0120]

[0121] The preparation method is the same as that in Example 1.

[0122] Example 5

[0123] This embodiment provides a resin composition and a preparation method thereof. The composition of the resin composition is shown in Table 3:

[0124] Table 3

[0125]

[0126] The preparation method is the same as that in Example 1.

[0127] Comparative Example 1

[0128] This comparative example provides a resin composition and a preparation method thereof. The materials and contents of the components in the resin composition are shown in Table 4:

[0129] Table 4

[0130]

[0131] The preparation method is the same as that in Example 1.

[0132] Performance Test 1

[0133] Amine resistance test:

[0134] The resin compositions prepared in the examples and comparative examples were cut into 120 mm×20 mm PVC leather strips, and 4 strips were prepared for each example (comparative example).

[0135] (1) Place one of the strips in a standard environment (23±2°C, 50±5% RH) as a standard specimen (marked as 0#), and place the other three strips (marked as 1#, 2#, and 3#) in a 100 mL glass beaker according to the method of Q / JLY J7111215B-2021, with the back facing up, with a length of about 50 mm in the cup and about 70 mm outside the cup, and fix them with tape.

[0136] (2) Place 20 mg of dipropyl glycol (CAS 110-98-5) and 10 mg of triethylenediamine (CAS 280-57-9) in a 150 mL beaker. Place a glass slide on the 150 mL beaker, with a reference size of 76 × 26 mm, and place the glass beaker with the PVC specimen fixed on the glass slide.

[0137] (3) Place the beaker prepared in step (2) in a sealed bottle. The device diagram is as follows: Figure 1As shown, then place the sealed bottle in an oven at 90℃ and take it out after 24 hours. Then place the PVC sample in a circulating hot air oven at 110℃ for 48 hours and take it out. After cooling for 30 minutes, compare it with the standard sample, test and record the Δa (representing the red and green values, taking the absolute value), Δb (representing the yellow and blue values, taking the absolute value), and ΔL (representing the brightness change, taking the absolute value) values ​​of the PVC sample. The standard requirements are Δa≤2, Δb≤5.

[0138] The results are shown in Table 5:

[0139] Table 5

[0140]

[0141]

[0142] It can be found from Table 5 that the resin composition provided by the present invention has excellent amine resistance.

[0143] Performance Test 2

[0144] Heat aging resistance test:

[0145] The resin compositions prepared in the examples and comparative examples were cut into 100mm×100mm PVC leather strips, and three strips (marked as 1#, 2#, and 3#) were prepared for each example (comparative example). They were placed in a 100°C constant temperature box for 336 hours, taken out and placed at room temperature for 30 minutes before evaluation. The standard requirements were that there were no appearance quality defects such as fading, softening, and texture disappearance after the test, and the grayscale level was ≥4.

[0146] The results are shown in Table 6:

[0147] Table 6

[0148]

[0149]

[0150] It can be found from Table 6 that the resin composition provided by the present invention does not change color and has excellent long-term heat aging resistance.

[0151] Performance Test 3

[0152] Light aging performance test:

[0153] The resin compositions prepared in the examples and comparative examples were cut into PVC leather strips with a size of 70 mm×150 mm, respectively. Three strips (marked as 1#, 2#, and 3#) were prepared for each example (comparative example).

[0154] Irradiance: 420nm, 1.25W / m 2, black mark temperature 100℃, relative humidity: 50%RH, no spraying during the test; test time 330h.

[0155] Standard requirements: The surface of the sample shall be free of cracks, powdering, deformation, spots, whitening and other defects that affect the appearance quality of the product, and the grayscale level shall be ≥ 4.

[0156] The results are shown in Table 7:

[0157] Table 7

[0158]

[0159]

[0160] It can be found from Table 7 that the resin composition provided by the present invention has excellent light aging resistance.

[0161] Performance Test 4

[0162] The resin compositions prepared in the examples and comparative examples were made into sun visors and then subjected to heat-sealed seam strength tests.

[0163] Cut 5 50mm wide sun visor skins (marked as 1#, 2#, 3#, 4#, 5#), ensure that the heat-sealed seam is in the middle of the sample, and the sample is at least 100mm long. Use a tensile testing machine to test, with a tensile speed of 100mm / min, take five groups, measure the tensile strength separately, until the heat-sealed seam is destroyed, and report the arithmetic average.

[0164] The results are shown in Table 8:

[0165] Table 8

[0166]

[0167]

[0168] It can be found from Table 8 that the heat-sealed seam strength of the resin composition provided by the present invention meets the judgment standard.

[0169] In summary, the amine resistance, heat aging resistance, light aging resistance and heat-sealed seam strength of the resin composition provided by the present invention all meet the product judgment criteria. The resin composition provided by the present invention has excellent amine resistance, heat aging resistance and light aging resistance, and can be used for a long time at 100°C. At the same time, under high light radiation conditions, the surface of the sample can be free of cracks, powdering, deformation, spots, whitening and other defects that affect the appearance quality of the product after 330 hours, and can be applied to new products such as overseas automobile sun visors.

[0170] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0171] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments described herein, but should conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A resin composition, characterized in that The resin composition comprises the following components in parts by weight:

2. The resin composition according to claim 1, characterized in that The resin composition comprises the following components in parts by weight:

3. The resin composition according to claim 1 or 2, characterized in that The resin composition further comprises 0.5-4 parts by weight of a colorant.

4. The resin composition according to claim 1 or 2, characterized in that The lead salt heat stabilizer includes any one or more of tribasic lead sulfate, tribasic lead phthalate, dibasic lead phosphite and dibasic lead stearate; And / or, the light stabilizer includes 2-hydroxy-4-methoxybenzophenone and / or 2-hydroxy-4-n-octyloxybenzophenone; And / or, the plasticizer includes any one or more of a triphenyl plasticizer, a phthalate plasticizer, and a cyclohexane dicarboxylate plasticizer; And / or, the impact-resistant additive includes an acrylic compound.

5. The resin composition according to claim 1 or 2, characterized in that The surface dispersant includes polyvinyl chloride wax; And / or, the flame retardant includes ZCFR-202 and / or antimony trioxide; And / or, the antioxidant includes a phosphite antioxidant; And / or, the amine-resistant agent includes a perchlorate-type amine-resistant agent and / or an organotin-type amine-resistant agent.

6. The method for preparing the resin composition according to any one of claims 1 to 5, characterized in that: The preparation method comprises: uniformly mixing the components of the formula, and then sequentially performing plasticization, calendering and matting treatment to obtain the resin composition.

7. The preparation method according to claim 6, characterized in that: The temperature during the mixing is 78-82°C; And / or, the plasticizing method is: using a mixing mill for mixing, the mixing temperature is 120-150° C., and the mixing time is 4-6 min; then using a rolling mill for rolling, the starting temperature is 148-152° C., and the starting time is 25-35 min; and / or, filtering is performed between the plasticizing and calendering, the filtering temperature is 148-152° C., and filtering is performed using 20-mesh, 100-mesh, and 10-mesh filters in sequence, and the filtering time is 8-12 min; And / or, the calendering temperature is 163-167° C., the calendering rate is 33-37 m / min, and the calendering pressure is 29-31 kg.

8. Use of the resin composition according to any one of claims 1 to 5 or the resin composition prepared by the preparation method according to claim 6 or 7 in automobile sun visors.

9. A car sun visor covering fabric, characterized in that: The automobile sun visor covering fabric comprises the resin composition according to any one of claims 1 to 5 or a resin composition prepared by the preparation method according to claim 6 or 7.

10. A vehicle, characterized in that: The vehicle comprises the automobile sun visor covering fabric according to claim 9.

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