Polyolefin composite material, method for producing the same, and use thereof

Abstract

This invention discloses a polyolefin composite material, its preparation method, and its application. The polyolefin composite material comprises the following components by weight: 88-112 parts polyolefin resin; 0.5-4 parts organic pigment yellow; 0.1-1.5 parts phthalocyanine green; and 1-15 parts dispersing agent. The dispersing agent comprises polar-group grafted olefin polymers and / or aromatic cyclic olefin copolymers. The polar groups in the polar-group grafted olefin polymers include one or more of the following: phosphate ester groups, phosphate groups, sulfonic acid groups, sulfonate groups, carboxylic acid groups, carboxylate groups, amino groups, quaternary ammonium salt groups, amide groups, acrylic acid groups, or maleic anhydride groups. This invention, by adding specific dispersing agents to a high-chroma polyolefin system, obtains a polyolefin composite material with high chroma and good precipitation performance.

Description

Technical Field

[0001] This invention relates to the field of polymer materials technology, and more specifically, to a polyolefin composite material, its preparation method, and its application. Background Technology

[0002] Currently, in the coloring of high-chroma yellow-green polyolefin materials, it is common practice to use phthalocyanine green pigment mixed with organic yellow pigment to achieve a high-chroma color matching effect. When using high concentrations of organic yellow pigment to achieve a high b-value (yellow phase), it will occupy a large amount of physical space in the melt. This increases the probability of phthalocyanine green particles colliding and agglomerating during movement. Simultaneously, due to the extremely high specific surface area and surface energy of phthalocyanine green pigment, as well as the strong π-π interactions between phthalocyanine green molecules, it is extremely difficult to disperse phthalocyanine green uniformly during polyolefin material processing. To improve dispersion uniformity, dispersants are usually added. Although this can improve chroma to some extent, the resulting high-chroma parts exhibit obvious pigment spots and precipitation problems on their surface. Summary of the Invention

[0003] In order to overcome the problems of insufficiently bright injection molding colors and the presence of colorant precipitation and pigment spots on the surface in the prior art, the present invention provides a polyolefin composite material.

[0004] Another object of the present invention is to provide a method for preparing the polyolefin composite material.

[0005] Another object of the present invention is to provide applications of the aforementioned polyolefin composite material.

[0006] To achieve the above objectives, the present invention employs the following technical solution: A polyolefin composite material comprising the following components in parts by weight: 88-112 parts of polyolefin resin; Organic pigment yellow 0.5-4 parts; Phthalocyanine green 0.1~1.5 parts; Dispersing agent 1-15 parts; The dispersing agent comprises polar group grafted olefin polymers and / or aromatic cyclic olefin copolymers; the polar groups in the polar group grafted olefin polymers include one or more of the following: phosphate ester group, phosphate group, sulfonic acid group, sulfonate group, carboxylic acid group, carboxylate group, amino group, quaternary ammonium salt group, amide group, acrylic acid group or maleic anhydride group.

[0007] This invention provides a polyolefin composite material. By adding a dispersing agent to a high-chroma polyolefin system, the resulting polyolefin composite material exhibits both high chroma and good precipitation performance. Specifically, when the dispersing agent is a polar group-grafted olefin polymer, its structure is similar to that of the matrix resin. Simultaneously, the polar groups can anchor and bind to phthalocyanine green, effectively preventing "post-flocculation" caused by shear force, thermal history, etc., during the processing, use, or storage of the polyolefin composite material. When the dispersing agent is an aromatic cyclic olefin copolymer, it can insert into the intermolecular space of phthalocyanine green molecules during the processing of the polyolefin composite material, preventing the rapid formation of π-π bonds. Therefore, the resulting polyolefin composite material exhibits both high chroma and good precipitation performance.

[0008] It should be noted that, in the polyolefin composite material of the present invention, the content of the polyolefin resin is preferably not less than 70 wt%.

[0009] Furthermore, the polyolefin resin includes polyethylene resin and / or polypropylene resin.

[0010] Furthermore, the polyethylene resin includes high-density polyethylene, medium-density polyethylene, or low-density polyethylene.

[0011] Furthermore, the polypropylene resin includes copolymer polypropylene and / or homopolymer polypropylene.

[0012] Furthermore, the melt flow rate of the polypropylene resin at 230°C and 2.16 kg load is 0.01~110 g / 10 min.

[0013] Furthermore, the melt flow rate of the polypropylene resin at 230°C and 2.16 kg load is 10~50 g / 10 min.

[0014] Furthermore, the melt flow rate of the polyethylene resin at 190°C and a load of 2.16 kg is 0.01~50 g / 10 min.

[0015] Furthermore, the melt flow rate of the polyethylene resin at 190°C and a load of 2.16 kg is 10~40 g / 10 min.

[0016] It should be noted that the test standard for melt flow rate described in this invention is ISO 1133-1-2022.

[0017] It should be noted that the dispersing agent described in this invention is 1 to 15 parts, for example, but not limited to 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts, 5.5 parts, 6 parts, 6.5 parts, 7 parts, 7.5 parts, 8 parts, 8.5 parts, 9 parts, 9.5 parts, 10 parts, 10.5 parts, 11 parts, 11.5 parts, 12 parts, 12.5 parts, 13 parts, 13.5 parts, 14 parts, 14.5 parts, or 15 parts, etc., and the specific values ​​between the above-mentioned values ​​are not exhaustively listed in this invention due to space limitations and for the sake of brevity.

[0018] Furthermore, in the polyolefin composite material, the content of the dispersing agent is 1~12wt%.

[0019] Furthermore, the dispersing agent is a polar group grafted polyolefin polymer and an aromatic cyclic olefin copolymer in a mass ratio of 1:(1~3).

[0020] Furthermore, the polar group-grafted olefin polymer includes one or more of maleic anhydride-grafted polypropylene, acrylic acid-grafted polypropylene, glycidyl methacrylate-grafted POE, amino-grafted polypropylene, amide-grafted polyethylene, or sodium carboxylate-grafted polyethylene; the aromatic cyclic olefin copolymer is a styrene-butadiene block copolymer.

[0021] Specifically, the POE includes ethylene-butene copolymers and / or ethylene-octene copolymers.

[0022] It should be noted that the polar group-grafted polyolefin polymers described in this invention can be commercially available or self-made.

[0023] In some preferred embodiments, the polar group-grafted polyolefin polymer can be prepared by the following method: Dry polyolefins and polar monomers are reacted under initiator conditions to obtain polar group-grafted polyolefin polymers.

[0024] Specifically, taking N-phenylmaleimide-grafted polyethylene as an example, polyethylene is dissolved in a solvent, and then a mixed solution containing N-phenylmaleimide monomer and initiator is added dropwise to the system. The reaction is carried out at 120~130℃ for 3.5~4.5h, cooled, and the precipitate is washed to obtain amide-grafted polyethylene.

[0025] Specifically, the amount of the N-phenylmaleimide monomer used is 5 to 10 wt% of polyethylene.

[0026] Specifically, the amount of the initiator is 0.5 to 1 wt% of polyethylene.

[0027] Specifically, the initiator can be dicumyl peroxide.

[0028] Specifically, the solvent may be xylene.

[0029] Specifically, the precipitation is achieved by pouring the product into anhydrous ethanol.

[0030] Preferably, the amide group content in the amide-grafted polyethylene is 0.5~1.5wt%.

[0031] Specifically, the content of the amide groups is determined by the following method: The nitrogen content of the sample was determined by an elemental analyzer and recorded as m. N (Using polyethylene as a blank control and urea standard to calibrate the elemental analyzer), then by amide content (wt%) = (43m N / 14m 总 The result is calculated by multiplying m by 100%, where m 总 The total mass of the sample to be tested.

[0032] The solution of maleic anhydride-grafted polyethylene was adjusted to pH 8-9 by adding NaHCO3 solution dropwise. After stirring for 2.5-3.5 hours, the solution was allowed to settle, washed until neutral, and dried to obtain sodium carboxylate-grafted polyethylene.

[0033] Specifically, the solvent in the maleic anhydride-grafted polyethylene solution is tetrahydrofuran / water with a volume ratio of (8~10):1.

[0034] Specifically, the concentration of the NaHCO3 solution is 0.8~1.2 mol / L.

[0035] Specifically, the sedimentation involves adding the stirred product into acetone.

[0036] Specifically, the washing process uses 65-75 wt% ethanol.

[0037] Preferably, the sodium carboxylate content in the sodium carboxylate-grafted polypropylene is 0.5~1.5 wt%.

[0038] Specifically, the sodium carboxylate content is determined by the following method: S1. The sample to be tested was immersed in 1 mol / L hydrochloric acid for 2 h to complete acidification; 0.3 g of the acidified product was added to 80 mL of xylene and refluxed at 140 °C for 30 min to completely dissolve it, then transferred to 25 mL of 0.05 mol / L KOH-ethanol and refluxed for 1.5 h to completely neutralize it; after cooling to room temperature, phenolphthalein indicator was added to the system to make the solution turn pink under alkaline conditions; titration was performed with 0.05 mol / L HCl-propanol to the phenolphthalein endpoint, and the volume of HCl-propanol was recorded as V2; S2. Reflux 80 mL of xylene at 140 °C for 30 min, then transfer it to 25 mL of 0.05 mol / L KOH-ethanol and continue refluxing for 1.5 h. After cooling to room temperature, add the same amount of phenolphthalein indicator as in step S1 to the system to make the solution appear pink under alkaline conditions. Titrate with 0.05 mol / L HCl-propanol to the phenolphthalein endpoint and record the volume of HCl-propanol as V0. Calculate the sodium carboxylate content (wt%) according to 23 × [0.05 × 25 - 0.05 × (V2 - V0)] / 1000m × 100%, where m is the mass (g) of the sample to be tested.

[0039] Monomers containing double bonds and amino functional groups are grafted onto polypropylene under initiator conditions. The grafted product is then subjected to a deprotection reaction to obtain amino-grafted polypropylene, as shown in Fan Shuyang, Li Hao, Zhang Xianming, et al. Preparation and properties of amino-functionalized polypropylene [J]. Polymer Materials Science and Engineering, 2015.

[0040] Specifically, the monomer containing double bonds and amino functional groups is 1,1-dimethyl ethyl 1-methyl-1-[3-(1-methylvinyl)phenyl]ethyl}-carbamate (TMITBC).

[0041] Specifically, the mass ratio of the monomer containing double bonds and amino functional groups to polypropylene is 1:(5~20).

[0042] Specifically, the initiator can be dicumyl peroxide.

[0043] Specifically, the mass ratio of the initiator to polypropylene is 1:(8~12).

[0044] Specifically, the deprotection reaction involves dissolving the graft compound in xylene, adding trifluoroacetic acid and stirring for 2 hours, then pouring the reactants into excess methanol to precipitate and washing with methanol. After washing, the product is incubated overnight in an aqueous sodium bicarbonate solution, then in water overnight, and finally poured into methanol for solid-liquid separation.

[0045] Specifically, the temperature of the stirring reaction is 65~75℃.

[0046] Specifically, the cleaning is performed twice.

[0047] Preferably, the amino content in the amino-grafted polypropylene is 1~1.5 wt%.

[0048] Specifically, the amino content in the amino-grafted polypropylene is determined by the following method: Polypropylene / TMITBC with different ratios were prepared, mixed and hot-pressed into films, and quantitative analysis was performed using infrared spectroscopy to analyze the characteristic peak A1 (1696~1725 cm⁻¹) of TMITBC in the spectra.-1 The characteristic peak of methyl groups in polypropylene, A2 (2722 cm⁻¹), was observed. -1 By integrating the peak areas of TMITBC and taking the ratio, the relationship between the percentage of TMITBC in the blend and the peak area ratio is obtained, and a standard curve is obtained. The grafting rate of the grafted product under different reaction conditions is then obtained from the standard curve, and the amino content can be obtained.

[0049] Specifically, the styrene-butadiene block copolymer contains 28-35 wt% styrene.

[0050] It should be noted that the phthalocyanine green described in this invention is 0.1 to 1.5 parts, for example, but not limited to 0.1 parts, 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts, 1 part, 1.1 parts, 1.2 parts, 1.3 parts, 1.4 parts, or 1.5 parts, etc., and the specific point values ​​between the above point values ​​are not exhaustively listed in this invention due to space limitations and for the sake of brevity.

[0051] It should be noted that the organic pigment yellow described in this invention is 0.5 to 4 parts, for example, but not limited to 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts, 1 part, 1.1 parts, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts, 2 parts, 2.2 parts, 2.5 parts, 2.8 parts, 3 parts, 3.2 parts, 3.5 parts, 3.8 parts, or 4 parts, etc., and the specific point values ​​between the above point values ​​are not exhaustively listed in this invention due to space limitations and for the sake of brevity.

[0052] Further, the organic pigment yellow includes one or more of pigment yellow 138, pigment yellow 180, pigment yellow 110, pigment yellow 151, pigment yellow 214, pigment yellow 175, pigment yellow 191, pigment yellow 83, pigment yellow 215, pigment yellow 150, pigment yellow 17, pigment yellow 155, pigment yellow 120, pigment yellow 13, pigment yellow 139, pigment yellow 18, pigment yellow 147, pigment yellow 192, pigment yellow 181, pigment yellow 74, or pigment yellow 154.

[0053] Furthermore, the organic pigment yellow includes one or more of pigment yellow 138, pigment yellow 180, pigment yellow 110, pigment yellow 151, pigment yellow 214, or pigment yellow 191.

[0054] Furthermore, the organic pigment yellow includes one or more of pigment yellow 138, pigment yellow 151, pigment yellow 214, or pigment yellow 191.

[0055] Furthermore, without affecting the high chroma and colorant precipitation and pigment spots of the polyolefin composite material described in this invention, it also includes 0.1 to 5 parts of additives and 0.1 to 20 parts of filler.

[0056] The filler described in this invention can be a commonly used filler, such as, but not limited to, one or more of talc, barium sulfate, or calcium carbonate.

[0057] Specifically, the additives include, but are not limited to, antioxidants.

[0058] The antioxidants described in this invention can be commonly used antioxidants, such as, but not limited to, hindered phenolic antioxidants, amine antioxidants and / or phosphite antioxidants.

[0059] Specifically, the hindered phenolic antioxidant is one or more of β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, 1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)-1,3,5-triazine-2,4,6-(1H,3H,5H)-trione, tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] pentaerythritol ester, or diethylene glycol bis[methyl 3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate].

[0060] Specifically, the amine antioxidant is one or more of the following: nonyl-N-(nonylphenyl)aniline, 4,4'-di(phenylisopropyl)diphenylamine, N-isopropyl-N-phenyl-p-phenylenediamine, N,N'-bis(1,4-dimethylpentyl)-p-phenylenediamine, and N-(p-toluenesulfonyl)-N'-phenyl-p-phenylenediamine.

[0061] Specifically, the phosphite antioxidant is one or more of tris(2,4-di-tert-butylphenyl) phosphite, bis(2,6-di-tert-butyl-4-tolyl) pentaerythritol phosphite, bis(2,4-dicumylphenyl) pentaerythritol-diphosphite, or bis(2,4-di-tert-butylphenyl) pentaerythritol bisdiphosphite.

[0062] This invention also protects a method for preparing the above-mentioned polyolefin composite material, comprising the following steps: After the components are mixed evenly, they are extruded and granulated to obtain a polyolefin composite material.

[0063] Furthermore, the extrusion granulation temperature is 200~230℃.

[0064] This invention also protects the use of the above-mentioned polyolefin composite material in the preparation of household goods, electronic components, household appliances, gardening equipment, medical technology equipment, motor vehicle parts or body parts, and is particularly suitable for outdoor material applications.

[0065] A component is made of the aforementioned polyolefin composite material, such as the outer shell of an outdoor insulated box, plastic parts for outdoor two-wheeled vehicles, and outdoor insulated water cups.

[0066] Furthermore, the chroma value of the part is ≥50.

[0067] Compared with the prior art, the beneficial effects of the present invention are: This invention provides a polyolefin composite material. By adding a specific dispersing agent to a high-chroma polyolefin system, the resulting polyolefin composite material has both high chroma and good precipitation performance. Detailed Implementation

[0068] The present invention will be further described below with reference to specific embodiments, but the embodiments do not limit the present invention in any way. Unless otherwise stated, the raw materials and reagents used in the embodiments of the present invention are conventionally purchased raw materials and reagents.

[0069] Raw materials used in the various embodiments and comparative examples of this invention: 1. Raw materials and reagents Polyolefin resin: Polyolefin resin 1: Polypropylene resin, PP8285E1, with a melt flow rate of 26 g / 10 min at 230°C and a load of 2.16, purchased from ExxonMobil; Polyolefin resin 2: Polyethylene resin, HDPE FL8920, with a melt mass flow rate of 20 g / 10 min at 190℃ and 2.16 kg load, purchased from Fujian United Petrochemical Co., Ltd. Organic Pigment Yellow: Organic Pigment Yellow 1: Pigment Yellow 138, Y138, purchased from Huabao Pigment; Organic Pigment Yellow 2: Pigment Yellow 180, purchased from Qicai Chemical; Organic Pigment Yellow 3: Pigment Yellow 110, Irgazin Yellow K 2060 SQ, purchased from Schenecter; Organic Pigment Yellow 4: Pigment Yellow 151, Arrovide Yellow H4G, purchased from Clariant; Organic Pigment Yellow 5: Pigment Yellow 191, PV Fast Yellow HGR, purchased from Clariant. Organic Pigment Yellow 6: Pigment Yellow 214, PV Fast Yellow H9G, purchased from Clariant. Phthalocyanine Green: Phthalocyanine Green 1: Pigment Green 7, PV Fast Green GNX, purchased from Clariant. Phthalocyanine Green 2: Pigment Green 36, Green 6Y FW-C, purchased from Clariant. Dispersing agents: Dispersant 1: Maleic anhydride-grafted polypropylene, AD-105, purchased from Baichen Polymer, with a grafting rate of 1.2 wt%; Dispersant 2: Acrylic acid grafted polypropylene, SCONA TPPP 2110 FA, purchased from BYK, grafting rate 2 wt%; Dispersant 3: Glycidyl methacrylate grafted with POE, W5A, purchased from KOAS Chemical, with a grafting rate of 0.8 wt%; Dispersant 4: Amino-grafted polypropylene, self-made, grafting rate 1.2 wt%, referenced from Fan Shuyang, Li Hao, Zhang Xianming, et al. Preparation and properties of amino-functionalized polypropylene [J]. Polymer Materials Science and Engineering, 2015. Dispersant 5: Amide-grafted polyethylene, self-made, grafting rate 1 wt%, preparation method as follows: Ten parts by weight of polyethylene (HDPE FL8920, Fujian United Petrochemical Co., Ltd.) were dissolved in xylene (volume based on 0.125 g / mL polyethylene). A solution of xylene (volume based on 0.04 g / mL N-phenylmaleimide monomer) containing 0.8 parts by weight of N-phenylmaleimide monomer and 0.08 parts by weight of dicumyl peroxide was added dropwise to the system. The reaction was carried out at 120-130℃ for 4 h. After cooling to 60℃, the solution was poured into anhydrous ethanol (volume based on 0.07 g / mL polyethylene), stirred for 5 min, and allowed to stand for 30 min. After solid-liquid separation, the precipitate was washed three times with anhydrous ethanol to obtain amide-grafted polyethylene.

[0070] Dispersant 6: Sodium carboxylate grafted polypropylene, self-made, grafting rate 1 wt%, preparation method as follows: Take 5 parts by weight of maleic anhydride-grafted polypropylene (AD-105), chop it, add it to a tetrahydrofuran / water (volume ratio 9:1) mixed solvent (volume amount based on 0.05 g / mL maleic anhydride-grafted polypropylene), and swell it at 40℃ for 30 min; then add 1M NaHCO3 solution dropwise until the pH is 8.5, stir for 3 h at room temperature under nitrogen atmosphere, and then precipitate it into acetone (volume amount based on 0.017 g / mL maleic anhydride-grafted polypropylene), filter, wash with 70 wt% ethanol until neutral, and dry to obtain sodium carboxylate-grafted polypropylene with a grafting rate of 1 wt%. Dispersant 7: Styrene-butadiene block copolymer, KUMHO KTR ® 201, purchased from KUMHOPETROCHEMICAL, styrene content 31.5 wt%; Dispersant: Dispersant 1: Ethylene bis-stearamide, EBS P400, purchased from Guangzhou Runfeng; Dispersant 2: Polyethylene wax, A-C540A, purchased from Honeywell; Antioxidant: Antioxidant 168, commercially available; It should be noted that the same raw materials were used in the parallel experiments of the embodiments and comparative examples in this invention.

[0071] 2. The polyolefin composite materials of the various embodiments and comparative examples of the present invention were obtained according to the formulations in Tables 1-3 by the following preparation methods: The components are mixed evenly in proportion and added to a twin-screw extruder. The polyolefin composite material is obtained by extrusion granulation at a temperature of 215°C.

[0072] 3. Performance Testing: (1) Chroma value measurement: The polyolefin composite materials prepared in each example and comparative example were injection molded into color plates of 50mm×80mm×2mm. The L* value, a* value, b* value and C* value were measured using a spectrophotometer (Date Color 1050) in reflectance mode. (2) Determination of precipitation performance: The polyolefin composite materials prepared in each example and comparative example were injection molded into color plates of 50mm×80mm×2mm. A PVC white board-A was placed on the color plate, and two 500g weights were placed on the PVC white board. The plates were pressed at 85℃ for 12h. The color parameters of PVC white board-A and PVC white board-B in the blank sample were detected, and the color difference DE=(DL*^2+Da*^2+Db*^2)^0.5 was calculated, where DL* is the difference of L* value between PVC white board-A and PVC white board-B in the blank sample, Da* is the difference of a* value between PVC white board-A and PVC white board-B in the blank sample, and Db* is the difference of b* value between PVC white board-A and PVC white board-B in the blank sample; wherein, PVC white board-A and PVC white board-B in the blank sample were both prepared by the following method: 75 parts by weight of PVC TL-700 (purchased from Tianjin LG Bohai), 30 parts by weight of plasticizer (DOTP, purchased from Guangzhou Weilianda), 3 parts by weight of stabilizer (TS-828, purchased from Huizhou Xinglv), 2 parts by weight of auxiliary stabilizer (HM-01AD, purchased from Guangzhou Haierma) and 2.88 parts by weight of titanium dioxide (RCL-69, purchased from Meililian) were mixed evenly, melt-extruded and cooled at 150℃ to obtain PVC composite material, and injection molded into a white board of 50mm×80mm×2mm; (3) Appearance performance test: The polyolefin composite materials prepared in each example and comparative example were injection molded into color plates of 50mm×80mm×2mm. The presence of color powder dots with a particle size greater than 0.1mm on the surface of the color plate was observed, and the number of color powder dots in each 50mm×50mm was calculated.

[0073] Examples 1-23 and Comparative Examples 1-7 Table 1. Dosage (parts by weight) and performance of each component in the color laser marking compositions of Examples 1-9

[0074] Table 2. Amounts (parts by weight) and properties of each component in the polyolefin composites of Examples 10-18

[0075] Table 3. Components (parts by weight) and properties of polyolefin composites in Examples 19-23 and Comparative Examples 1-7

[0076] As can be seen from Tables 1-3, the polyolefin composite material prepared by this invention has high chroma, with chroma values ​​all ≥50, and good precipitation performance, with no more than 5 pigment spots per 250 mm. 2 Or without powder spots.

[0077] As can be seen from Comparative Example 1, if no polar groups are added to the grafted polyolefin polymer, the resulting polyolefin composite material has significantly higher pigment spots than the example.

[0078] As can be seen from Comparative Examples 2 to 5, if conventional dispersants are used, although increasing their dosage can reduce the number of pigment dots, the precipitation performance will be significantly reduced and will not meet the application requirements.

[0079] Comparative Examples 6 and 7 show that adding only phthalocyanine green cannot meet the chroma requirement, and the number of pigment dots increases significantly; while adding only organic pigment yellow can meet the chroma requirement, the number of pigment dots cannot.

[0080] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A polyolefin composite, characterized in that, Includes the following components, calculated in parts by weight: 88-112 parts of polyolefin resin; Organic pigment yellow 0.5-4 parts; Phthalocyanine green 0.1~1.5 parts; Dispersing agent 1-15 parts; The dispersing agent comprises polar group grafted olefin polymers and / or aromatic cyclic olefin copolymers; the polar groups in the polar group grafted olefin polymers include one or more of the following: phosphate ester group, phosphate group, sulfonic acid group, sulfonate group, carboxylic acid group, carboxylate group, amino group, quaternary ammonium salt group, amide group, acrylic acid group or maleic anhydride group.

2. The polyolefin composite material according to claim 1, characterized in that, The dispersing agent is a polar group grafted polyolefin polymer and an aromatic cyclic olefin copolymer in a mass ratio of 1:(1~3).

3. The polyolefin composite material according to claim 1, characterized in that, The polar group-grafted olefin polymers include one or more of maleic anhydride-grafted polypropylene, acrylic acid-grafted polypropylene, glycidyl methacrylate-grafted POE, amino-grafted polypropylene, amide-grafted polyethylene, or sodium carboxylate-grafted polyethylene; the aromatic cyclic olefin copolymer is a styrene-butadiene block copolymer.

4. The polyolefin composite material according to claim 1, characterized in that, The organic pigment yellow includes one or more of pigment yellow 138, pigment yellow 180, pigment yellow 110, pigment yellow 151, pigment yellow 214, pigment yellow 175, pigment yellow 191, pigment yellow 83, pigment yellow 215, pigment yellow 150, pigment yellow 17, pigment yellow 155, pigment yellow 120, pigment yellow 13, pigment yellow 139, pigment yellow 18, pigment yellow 147, pigment yellow 192, pigment yellow 181, pigment yellow 74, or pigment yellow 154; preferably, the organic pigment yellow includes one or more of pigment yellow 138, pigment yellow 180, pigment yellow 110, pigment yellow 151, pigment yellow 214, or pigment yellow 191; more preferably, the organic pigment yellow includes one or more of pigment yellow 138, pigment yellow 151, pigment yellow 214, or pigment yellow 191.

5. The polyolefin composite material according to claim 1, characterized in that, The polyolefin resin includes polyethylene resin and / or polypropylene resin.

6. The polyolefin composite material according to claim 5, characterized in that, Satisfy at least one of the following two conditions: (a) The melt flow rate of the polyethylene resin at 190°C and 2.16 kg load is 0.01~50 g / 10 min; preferably, the melt flow rate of the polyethylene resin at 190°C and 2.16 kg load is 10~40 g / 10 min. (b) The melt flow rate of the polypropylene resin at 230°C and 2.16 kg load is 0.01~110 g / 10 min; preferably, the melt flow rate of the polypropylene resin at 230°C and 2.16 kg load is 10~50 g / 10 min.

7. The polyolefin composite material according to claim 1, characterized in that, It also includes 0.1 to 5 parts of additives; said additives include antioxidants.

8. A method for preparing the polyolefin composite material according to any one of claims 1 to 7, characterized in that, Includes the following steps: After the components are mixed evenly, they are extruded and granulated to obtain a polyolefin composite material.

9. The use of the polyolefin composite material according to any one of claims 1 to 7 in the preparation of household goods, electronic components, household appliances, gardening equipment, medical technology equipment, motor vehicle parts or body parts.

10. A component, characterized in that, It is prepared using the polyolefin composite material described in any one of claims 1 to 7.

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