Low-temperature-resistant high-transparency reinforcing material, preparation method thereof, plastic part and equipment

Abstract

The invention discloses a low-temperature-resistant high-transparency reinforcing material and a preparation method thereof as well as a plastic part and equipment, and the low-temperature-resistant high-transparency reinforcing material is prepared from the following raw materials in percentage by weight: 50-79% of PP (polypropylene) resin, 5-7% of compatilizer, 2-5.5% of flexibilizer, 10-40% of glass fiber and 0.5-1% of other auxiliaries, the preparation method comprises the following steps: step 1, mixing the PP resin, the flexibilizer, the compatilizer and other auxiliaries by mixing equipment to obtain a mixture; and 2, mixing the mixture and glass fibers in extrusion equipment, and carrying out melt extrusion to obtain the low-temperature-resistant high-transparency reinforcing material. According to the low-temperature-resistant high-transparency reinforcing material, the propylene-butylene copolymer is selected as a resin raw material, reinforced plastic is prepared by utilizing high impact strength and transparency of the propylene-butylene copolymer, and an injection-molded product has the characteristics of low-temperature cracking resistance and high transparency; the reinforced plastic prepared from the propylene-butylene copolymer has high fluidity, and the prepared product does not have weld marks, does not show rib positions and is beautiful in appearance.

Description

Technical Field

[0001] The invention belongs to the field of plastic materials, and in particular relates to a low-temperature resistant and highly transparent reinforced material and a preparation method thereof, as well as a plastic component and equipment. Background Art

[0002] PP resins mainly include ethylene propylene copolymers, ethylene propylene homopolymers and ethylene propylene random copolymers. With the rise of coal chemical industry, coal-to-olefins will produce ethylene, propylene and butene. In order to consume butene, propylene butene copolymers were produced. Compared with homopolypropylene, propylene butene copolymers not only have comparable transparency, but also have high impact strength and high heat resistance. The heat resistance temperature is 110°C, and it can be used to make heat-resistant plastic products. At present, parts such as air conditioner fan blades, vehicle cooling fan blades, kettles and oil jugs are mostly made of polypropylene, but their low-temperature resistance is usually poor, especially for cold areas, which have high requirements for the low-temperature resistance of plastic products, which also puts forward the demand for low-temperature resistant plastic parts. Summary of the invention

[0003] In order to solve the above technical problems, one of the purposes of the present invention is to provide a low-temperature resistant and highly transparent reinforced material with simple raw material components, good final transparency, and high strength.

[0004] In order to achieve the above purpose, the technical scheme of the present invention is as follows: a low temperature resistant and highly transparent reinforced material, which is composed of the following raw materials by weight percentage: PP resin 50-79%, compatibilizer 5-7%, toughening agent 2-5.5%, glass fiber 10-40%, and other additives 0.5-1%.

[0005] The above technical solution is composed of the following raw materials by weight percentage: 60-70% PP resin, 5.5-6.5% compatibilizer, 3-4% toughening agent, 20-30% glass fiber, and 0.6-0.8% other additives.

[0006] The above technical solution meets at least one of the following conditions:

[0007] A1: The PP resin is propylene butene copolymer polypropylene;

[0008] B1: The compatibilizer is maleic anhydride grafted polypropylene;

[0009] C1: The glass fiber is alkali-free chopped glass fiber or rolled glass fiber;

[0010] D1: The diameter of the glass fiber is 9-17um;

[0011] E1: The toughening agent is a thermoplastic elastomer;

[0012] F1: The other additives are at least one of calcium stearate, PE wax, EBS, silicone, antioxidant and nucleating agent.

[0013] The thermoplastic elastomer in the above technical solution is at least one of ethylene propylene thermoplastic elastomer, ethylene octene thermoplastic elastomer and ethylene butene thermoplastic elastomer.

[0014] The second object of the present invention is to provide a method for preparing the above-mentioned low-temperature resistant and highly transparent reinforced material with a simple preparation process.

[0015] In order to achieve the above object, another technical solution of the present invention is as follows: a method for preparing the low temperature resistant and highly transparent reinforced material as described above comprises the following steps:

[0016] Step 1: PP resin, toughening agent, compatibilizer and other additives are mixed by a mixing device to obtain a mixture;

[0017] Step 2: Mix the mixed material and glass fiber in an extrusion device and melt-extrude to obtain a low-temperature resistant and highly transparent reinforced material.

[0018] The above technical solution satisfies at least one of the following conditions:

[0019] A2: The mixing equipment in step 1 is a high-speed mixing pot;

[0020] B2: The extrusion equipment in step 2 is a screw extruder;

[0021] C2: The extrusion temperature of the extrusion equipment in step 2 is 180-230° C., and the screw speed is 400-450 rpm.

[0022] The third object of the present invention is to provide a plastic product, which is made of the low-temperature resistant and highly transparent reinforced material as described above or the low-temperature resistant and highly transparent reinforced material prepared by the preparation method as described above.

[0023] The plastic parts described in the above technical solution are fan blades, vehicle oil cans or vehicle water cans.

[0024] A fourth object of the present invention is to provide a device comprising the plastic part as described above.

[0025] The equipment described in the above technical solution is a vehicle, an electric fan or an air conditioner.

[0026] Compared with the prior art, the beneficial effects of the present invention are: propylene butene copolymer is selected as the resin raw material, and its high impact strength and transparency are utilized to prepare reinforced plastics, and its injection molded products have the characteristics of resistance to low-temperature cracking and high transparency; the reinforced plastic prepared by using propylene butene copolymer has high fluidity, and the prepared products will not have welding marks, will not have ribs, and have beautiful appearance. DETAILED DESCRIPTION

[0027] The principles and features of the present invention are described below in conjunction with the embodiments, and the examples are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described more specifically by way of example in the following paragraphs. According to the following description and claims, the advantages and features of the present invention will be more clearly described.

[0028] The present invention provides a low temperature resistant and highly transparent reinforced material, which is composed of the following raw materials by weight percentage: PP resin 50-79% (can be any value among 50%, 51%, 52%, 53%, 54%, 55%, 56%, 57%, 58%, 59%, 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69%, 70%, 71%, 72%, 73%, 74%, 75%, 76%, 77%, 78% and 79%) or the range between any two values), compatibilizer 5-7% (can be 5%, 5.1%, 5.2%, 5.3%, 5.4%, 5.5%, 5.6%, 5.7%, 5.8%, 5.9%, 6%, 6.1%, 6.2%, 6.3%, 6.4%, 6.5%, 6.6%, 6.7%, 6.8%, 6.9% and 7%, any value or the range between any two values), toughening agent 2-5.5% (can be 2%, 2.1%, 2.2%, 2.3% , 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3%, 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, 3.7%, 3.8%, 3.9%, 4%, 4.1%, 4.2%, 4.3%, 4.4%, 4.5%, 4.6%, 4.7%, 4.8%, 4.9%, 5%, 5.1%, 5.2%, 5.3%, 5.4% and 5.5%, any value or the corresponding range between any two values), Glass fiber 10-40% (can be any value among 10%, 12%, 14%, 16%, 18%, 20%, 22%, 24%, 26%, 28%, 30%, 32%, 34%, 36%, 38% and 40% or the corresponding range between any two values), other additives 0.5-1% (can be any value among 0.5%, 0.6%, 0.7%, 0.8%, 0.9% and 1% or the corresponding range between any two values), the sum of the weight percentages of the above raw materials is 100%.

[0029] The above technical solution meets at least one of the following conditions:

[0030] A1: The PP resin is propylene butene copolymer polypropylene;

[0031] B1: The compatibilizer is maleic anhydride grafted polypropylene;

[0032] C1: The glass fiber is alkali-free chopped glass fiber or rolled glass fiber;

[0033] D1: The diameter of the glass fiber is 9-17 μm (can be any value among 9 μm, 10 μm, 11 μm, 12 μm, 13 μm, 14 μm, 15 μm, 16 μm and 17 μm or the corresponding range between any two values);

[0034] E1: The toughening agent is a thermoplastic elastomer (the thermoplastic elastomer is at least one of ethylene propylene thermoplastic elastomer, ethylene octene thermoplastic elastomer and ethylene butene thermoplastic elastomer);

[0035] F1: The other additives are at least one of calcium stearate, PE wax, EBS, silicone, antioxidant and nucleating agent.

[0036] The present invention also provides a method for preparing the above-mentioned low-temperature resistant and highly transparent reinforced material, comprising the following steps:

[0037] Step 1: PP resin, toughening agent, compatibilizer and other additives are mixed by a mixing device to obtain a mixture;

[0038] Step 2: Mix the mixed material and glass fiber in an extrusion device and melt-extrude to obtain a low-temperature resistant and highly transparent reinforced material.

[0039] The above technical solution satisfies at least one of the following conditions:

[0040] A2: The mixing equipment in step 1 is a high-speed mixing pot;

[0041] B2: The extrusion equipment in step 2 is a screw extruder;

[0042] C2: The extrusion temperature of the extrusion equipment in the step 2 is 180-230°C (can be any value among 180°C, 185°C, 190°C, 195°C, 200°C, 205°C, 210°C, 215°C, 220°C, 225°C and 230°C, or a range corresponding to any two values), and the screw speed is 400-450 rpm (can be any value among 400 rpm, 405 rpm, 410 rpm, 415 rpm, 420 rpm, 425 rpm, 430 rpm, 435 rpm, 440 rpm, 445 rpm and 450 rpm, or a range corresponding to any two values).

[0043] The present invention also provides a plastic product, which is made of the low-temperature resistant and highly transparent reinforced material as described above or the low-temperature resistant and highly transparent reinforced material prepared by the preparation method as described above. The plastic product can be a fan blade, a vehicle oil can or a vehicle water can. The fan blade can be used as an air conditioner fan blade, an electric fan blade or a vehicle radiator blade. The vehicle oil can and the vehicle water can can both be used in vehicles, so that the vehicle parts have better antifreeze ability.

[0044] The scheme of the present invention is described in detail below in conjunction with embodiments:

[0045] The methods used in the present invention are conventional methods unless otherwise specified, and the raw materials used in the present invention are commercially available products unless otherwise specified. Specifically, the PP resin is EC340R-B produced by Shaanxi Yulin Energy Chemical and K1870-B propylene-butene copolymer polypropylene (abbreviated as propylene-butene copolymer in Table 1) produced by Yanchang Petroleum; K8003 and BX3920 (ethylene-propylene copolymer polypropylene, abbreviated as ethylene-propylene copolymer in Table 1) produced by Wuhan Sino-Korea Petrochemical; the compatibilizer is HW-502 produced by Jiaxing Huawen; the toughening agent is ExxonMobil's 6202 toughening agent and SK's 875L toughening agent, and the glass fiber is Jushi Glass Fiber EDR13-2000-988A glass fiber; other additives include B225 antioxidant produced by Lianlong and P-130 EBS (ethylene bis stearamide) produced by Indonesia CMS.

[0046] The present invention provides a method for preparing a low-temperature resistant and highly transparent enhanced polypropylene material, which comprises the following steps: first, PP resin, toughening agent, compatibilizer and other processing aids are added to a high-speed mixing pot according to corresponding weight percentages and stirred and mixed, then the mixed raw materials are put into an extrusion device for extrusion, and glass fiber is added through a side feed port or a glass fiber inlet, and melt-extruded together to obtain a low-temperature resistant and highly transparent enhanced polypropylene material. The extrusion temperature is 180-230°C and the screw speed is 400-450 rpm. The formulas of Example 1-Example 3 and Comparative Example 1-Comparative Example 4 are specifically shown in Table 1:

[0047] Table 1 Formula table of Example 1-Example 3 and Comparative Example 1-Comparative Example 4

[0048]

[0049]

[0050] Note: The unit of the amount of each component in Table 1 is %, all of which are calculated by weight percentage.

[0051] Performance Testing

[0052] The materials obtained in Examples 1 to 3 and Comparative Examples 1 to 4 were tested for Izod notched impact strength, low temperature falling ball impact, tensile strength and melt index using the corresponding national standards. The appearance transparency was visually inspected using a color plate. The results are shown in Table 2:

[0053] Table 2 Performance analysis table of Example 1-Example 3 and Comparative Example 1-Comparative Example 4

[0054]

[0055] It can be seen from the above embodiments and comparative examples that the low temperature resistant and highly transparent enhanced polypropylene material provided in each embodiment has a clear transparent color plate, because the raw material of propylene-butene copolymerized polypropylene itself has high transparency, and the butene contained therein is conducive to the dispersion of glass fiber and anti-floating fiber. It can be seen from Example 3 and Comparative Example 4 that the metallocene ethylene propylene elastomer has little effect on the transparency of the low temperature resistant and highly transparent enhanced polypropylene material, and at the same time, it also gives the low temperature resistant and highly transparent enhanced polypropylene material high fluidity, which is conducive to eliminating the welding marks of plastic parts, does not show the rib position, and has a beautiful appearance.

[0056] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A low temperature resistant and highly transparent reinforced material, characterized in that: The composition is composed of the following raw materials by weight percentage: PP resin 50-79%, compatibilizer 5-7%, toughening agent 2-5.5%, glass fiber 10-40%, and other additives 0.5-1%.

2. The low temperature resistant and highly transparent reinforced material according to claim 1, characterized in that: The composition is composed of the following raw materials by weight percentage: PP resin 60-70%, compatibilizer 5.5-6.5%, toughening agent 3-4%, glass fiber 20-30%, and other additives 0.6-0.8%.

3. The low temperature resistant and highly transparent reinforced material according to claim 1 or 2, characterized in that: It meets at least one of the following conditions: A1: The PP resin is propylene butene copolymer polypropylene; B1: The compatibilizer is maleic anhydride grafted polypropylene; C1: The glass fiber is alkali-free chopped glass fiber or rolled glass fiber; D1: The diameter of the glass fiber is 9-17um; E1: The toughening agent is a thermoplastic elastomer; F1: The other additives are at least one of calcium stearate, PE wax, EBS, silicone, antioxidant and nucleating agent.

4. The low temperature resistant and highly transparent reinforced material according to claim 3, characterized in that: The thermoplastic elastomer is at least one of ethylene propylene thermoplastic elastomer, ethylene octene thermoplastic elastomer and ethylene butene thermoplastic elastomer.

5. A method for preparing a low temperature resistant and highly transparent reinforced material according to any one of claims 1 to 4, characterized in that: The steps include: Step 1: PP resin, toughening agent, compatibilizer and other additives are mixed by a mixing device to obtain a mixture; Step 2: Mix the mixed material and glass fiber in an extrusion device and melt-extrude to obtain a low-temperature resistant and highly transparent reinforced material.

6. The preparation method according to claim 5, characterized in that: It meets at least one of the following conditions: A2: The mixing equipment in step 1 is a high-speed mixing pot; B2: The extrusion equipment in step 2 is a screw extruder; C2: The extrusion temperature of the extrusion equipment in step 2 is 180-230°C, and the screw speed is 400-450 rpm.

7. A plastic part, characterized in that: The low-temperature resistant and highly transparent reinforced material is made of the low-temperature resistant and highly transparent reinforced material as described in any one of claims 1 to 4 or the low-temperature resistant and highly transparent reinforced material prepared by the preparation method as described in claim 5 or 6.

8. The plastic article according to claim 7, characterized in that: The plastic part is a fan blade, a vehicle oil can or a vehicle water can.

9. A device, characterized in that: Comprising the plastic article as claimed in claim 8.

10. The device according to claim 9, characterized in that The device is a vehicle, an electric fan or an air conditioner.

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