An impact-resistant light-colored LCP-based LDS material and its preparation method

Abstract

This application relates to an impact-resistant light-colored LCP-based LDS material and its preparation method, belonging to the technical field of polymer materials; the method includes: obtaining a chromium-doped tin oxide material; mixing and extruding LCP, the chromium-doped tin oxide material, glass fiber, an elastomeric toughening agent, carbon nanotubes, and an antioxidant to granulate, and the elastomeric toughening agent includes maleic anhydride-grafted ethylene propylene diene monomer to obtain an LDS material; by adding the elastomeric toughening agent maleic anhydride-grafted ethylene propylene diene monomer, the defect of poor impact resistance of the LCP-based LDS material caused by inorganic fillers is improved, and the problem of poor impact resistance of the LCP-based LDS material added with fillers is avoided.

Description

Technical Field

[0001] This application relates to the technical field of polymer materials, and particularly relates to an impact-resistant light-colored LCP-based LDS material and a preparation method thereof. Background Art

[0002] LDS (Laser Direct Structuring) is laser direct forming, a 3D-MID (Three-Dimensional Molded Interconnected Device, also known as three-dimensional circuit board) production technology for professional laser processing, injection molding, and electroplating processes. Its principle is that a molded part with mechanical functions serves as the substrate, and electronic circuit wiring is directly made on the part surface to form conductive wires and patterns with electrical functions, thereby achieving connections in three-dimensional space, integrating the mechanical and electronic functions of molded electronic components into an organic whole, and being suitable for the production of local fine circuits. This technology can be applied in many fields such as mobile phone and computer antennas, automotive electronic circuits, and medical-grade hearing aids. Currently, the most common application is in mobile phone antennas. LDS can directly laser the antenna on the mobile phone shell, with flexible design and high freedom. It not only avoids interference from internal mobile phone metals but also reduces the volume of the mobile phone.

[0003] The production process of LDS is to add metal additives and additives to plastics and extrude them into particles, then injection mold them into blank parts, and then perform laser ablation on them. The purpose is to form an etching area and activate the metal, and then perform electroless plating to form a conductive path in the etching area, and finally assemble. In terms of plastics, the key lies in the selection of metal additives and additives. Improper selection of metal additives may cause defects such as silver streaks and pits in injection molding.

[0004] The key to realizing laser direct forming technology is to add one or more laser-sensitive substances to the resin matrix. This kind of laser-sensitive additive is generally a metal compound, which can be decomposed into metal particles and other ligands after high-energy laser irradiation. Currently, the commonly used laser-sensitive additives are mainly basic copper phosphate and copper chromite black. Both basic copper phosphate and copper chromite black are a type of dark additive, and their mixing with LCP resin has a greater impact on its original color, which will affect the application of the corresponding resin LDS material to a certain extent.

[0005] At the same time, liquid crystal polymer materials (LCP) have a broader application in LDS technology due to their lower dielectric constant and dielectric loss. The impact resistance index of LCP is low, that is to say, it is very brittle. The IZOD for measuring the impact resistance index is generally 30 KJ / mm. After introducing LDS laser-sensitive additives (generally inorganic metal oxide particles) into LCP, the impact resistance of the material will be significantly reduced. Therefore, it restricts its application in many fields such as antenna communication base stations. Summary of the Invention

[0006] The present application provides an impact-resistant light-colored LCP-based LDS material and a preparation method thereof to improve the problem that the current LDS materials are not impact-resistant.

[0007] In a first aspect, the present application provides a preparation method of an impact-resistant light-colored LCP-based LDS material, and the method includes:

[0008] Obtaining chromium-doped tin oxide material;

[0009] Mixing LCP, the chromium-doped tin oxide material, glass fiber, an elastomer toughening agent, carbon nanotubes, and an antioxidant, and extruding and pelletizing them. The elastomer toughening agent includes maleic anhydride-grafted ethylene-propylene-diene monomer to obtain an LDS material.

[0010] As an optional implementation manner, the chromium-doped tin oxide material is nanoscale; or the particle size of the chromium-doped tin oxide material is 10 - 50 nm.

[0011] As an optional implementation manner, the obtaining of the chromium-doped tin oxide material includes:

[0012] Mixing stannous chloride dihydrate, a cationic surfactant, ammonium chloride, and chromium acetate in a solvent to obtain a mixture;

[0013] Heating and reacting the mixture to obtain a precipitate;

[0014] Sintering the precipitate to obtain a chromium-doped tin oxide material.

[0015] As an optional implementation manner, the cationic surfactant includes at least one of cetyltrimethylammonium bromide, cetyltrimethylammonium chloride, and octadecyltrimethylammonium chloride.

[0016] As an optional implementation manner, the molar ratio of chromium acetate to stannous chloride dihydrate is 0.01 - 0.1; and / or

[0017] The molar ratio of ammonium chloride to stannous chloride dihydrate is 1.8 - 2.2. Preferably, the molar ratio of ammonium chloride to stannous chloride dihydrate is 2.

[0018] As an optional implementation manner, the relationship between the molar addition amount a of the cationic surfactant and the total molar addition amount b of stannous chloride dihydrate and ammonium chloride satisfies: a / b = 1% - 5%.

[0019] As an optional implementation manner, the temperature of the heating reaction is 100 - 120 °C; and / or

[0020] The time of the heating reaction is 12 - 24 h.

[0021] As an alternative embodiment, the sintering temperature is 500 - 800 °C; and / or

[0022] the sintering time is 1.5 - 2.5 h.

[0023] As an alternative embodiment, the mass addition amount of the glass fiber is 10% - 30% of the mass addition amount of the LCP; and / or

[0024] the mass addition amount of the carbon nanotubes is 1% - 5% of the mass addition amount of the LCP; and / or

[0025] the mass addition amount of the maleic anhydride grafted ethylene - propylene - diene rubber is 3% - 15% of the mass addition amount of the LCP; and / or

[0026] the mass addition amount of the chromium - doped tin oxide is 5% - 15% of the mass addition amount of the LCP; and / or

[0027] the mass addition amount of the antioxidant is 0.5% - 2% of the mass addition amount of the LCP.

[0028] In a second aspect, the present application provides an impact - resistant light - colored LCP - based LDS material, which is prepared by using the preparation method of the impact - resistant light - colored LCP - based LDS material described in the first aspect.

[0029] The above - mentioned technical solutions provided by the embodiments of the present application have the following advantages compared with the prior art:

[0030] In the method provided by the embodiments of the present application, by adding the elastomer toughening agent maleic anhydride grafted ethylene - propylene - diene rubber, the defect of poor impact resistance of the LCP - based LDS material caused by the inorganic filler is improved, and the problem of poor impact resistance of the LCP - based LDS material added with the filler is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present application and used together with the specification to explain the principles of the present application.

[0032] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other accompanying drawings can also be obtained based on these drawings without creative efforts.

[0033] Figure 1 It is a flowchart of the method provided by the embodiments of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Apparently, the described embodiments are some, but not all, of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the scope of protection of this application.

[0035] Unless otherwise specifically stated, all kinds of raw materials, reagents, instruments, and equipment used in this application can be obtained through market purchases or prepared by existing methods.

[0036] As Figure 1 shown, the embodiments of this application provide a preparation method of an impact-resistant light-colored LCP-based LDS material, and the method includes:

[0037] S1. Obtain a chromium-doped tin oxide material;

[0038] In some embodiments, the chromium-doped tin oxide material is nanoscale; preferably, the particle size of the chromium-doped tin oxide material is 10-50 nm. Laser-sensitive additives with nanoscale sizes are also more evenly dispersed when blended with resins. Doping with chromium can not only reduce the particle size of tin oxide (the particle size is also related to the type of surfactant, sintering temperature, and time), but also improve the laser absorption ability of tin oxide. At the same time, the smaller the particle size of nanoscale chromium-doped tin oxide and the more uniform the dispersion, to a certain extent, it is also beneficial to the improvement of the impact resistance of the LCP-based LDS material.

[0039] In some embodiments, the obtaining of the chromium-doped tin oxide material includes:

[0040] S1.1. Mix stannous chloride dihydrate, a cationic surfactant, ammonium chloride, and chromium acetate in a solvent to obtain a mixture;

[0041] In some embodiments, the cationic surfactant includes at least one of cetyltrimethylammonium bromide, cetyltrimethylammonium chloride, and octadecyltrimethylammonium chloride. The molar ratio of chromium acetate to stannous chloride dihydrate is 0.01-0.1; the molar ratio of ammonium chloride to stannous chloride dihydrate is 1.8-2.2, preferably, the molar ratio of ammonium chloride to stannous chloride dihydrate is 2. The relationship between the molar addition amount a of the cationic surfactant and the total molar addition amount b of stannous chloride dihydrate and ammonium chloride satisfies: a / b = 1% - 5%. In other words, the addition amount of the cationic surfactant is 1% - 5% of the total molar amount of stannous chloride dihydrate and ammonium chloride.

[0042] Specifically, in this embodiment, an appropriate amount of stannous chloride dihydrate, cationic surfactants (cetyltrimethylammonium bromide, cetyltrimethylammonium chloride, and octadecyltrimethylammonium chloride), ammonium chloride, and chromium acetate are added to a reaction beaker with an appropriate amount of distilled water and stirred until dissolved uniformly to obtain a mixture.

[0043] S1.2. Heat-react the mixture to obtain a precipitate;

[0044] In some embodiments, the temperature of the heat reaction is 100 - 120 °C; the time of the heat reaction is 12 - 24 h.

[0045] Specifically, in this embodiment, the mixture is transferred to a reaction kettle for oven heating. After heating, the precipitate in the reaction kettle is processed and collected to obtain a precipitate.

[0046] S1.3. Sinter the precipitate to obtain a chromium-doped tin oxide material.

[0047] In some embodiments, the temperature of the sintering is 500 - 800 °C; the time of the sintering is 1.5 - 2.5 h.

[0048] Specifically, in this embodiment, the collected product is subjected to high-temperature sintering in a muffle furnace to prepare a chromium-doped tin oxide material.

[0049] S2. Mix and extrude into pellets LCP, the chromium-doped tin oxide material, glass fiber, an elastomeric toughening agent, carbon nanotubes, and an antioxidant. The elastomeric toughening agent includes maleic anhydride-grafted ethylene-propylene-diene monomer rubber to obtain an LDS material.

[0050] In some embodiments, the mass addition amount of the glass fiber is 10% - 30% of the mass addition amount of the LCP; the mass addition amount of the carbon nanotubes is 1% - 5% of the mass addition amount of the LCP; the mass addition amount of the maleic anhydride-grafted ethylene-propylene-diene monomer rubber is 3% - 15% of the mass addition amount of the LCP; the mass addition amount of the chromium-doped tin oxide is 5% - 15% of the mass addition amount of the LCP; the mass addition amount of the antioxidant is 0.5% - 2% of the mass addition amount of the LCP. The antioxidant can be selected from antioxidant 1010.

[0051] Specifically, in this embodiment, a certain amount of LCP, chromium-doped tin oxide, glass fiber, elastomer toughening agent maleic anhydride grafted ethylene-propylene-diene rubber, carbon nanotube, and antioxidant are mixed evenly and then extruded and pelletized to obtain a high impact resistance light-colored LCP-based LDS material. Extrusion melting temperature: feeding section: 280 °C, compression section: 300 °C, homogenization section: 310 °C, screw speed 150 rpm / min. Finally, it is injection molded into test specimens by an injection molding machine, and the injection molding parameters are: barrel nozzle temperature 330 °C, front section temperature of the barrel 320 °C, middle section temperature of the barrel 310 °C, rear section temperature of the barrel 300 °C; mold temperature 120 °C, injection pressure 80 Mpa, holding pressure 20 Mpa, screw speed 100 rpm / min.

[0052] Based on a general inventive concept, an embodiment of the present application also provides an impact-resistant light-colored LCP-based LDS material, and the LDS material is prepared by using the preparation method of the impact-resistant light-colored LCP-based LDS material provided above.

[0053] This LDS material is prepared based on the above method, and the specific steps of this method can refer to the above embodiment. Since this LDS material adopts some or all of the technical solutions of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, and will not be elaborated one by one here.

[0054] The following further elaborates the present application in combination with specific embodiments. It should be understood that these embodiments are only used to illustrate the present application and not to limit the scope of the present application. The experimental methods without specific conditions noted in the following embodiments are usually determined according to national standards. If there is no corresponding national standard, they are carried out according to general international standards, conventional conditions, or the conditions recommended by the manufacturer.

[0055] Example 1

[0056] A preparation method of an impact-resistant light-colored LCP-based LDS material, the method comprising:

[0057] I: Preparation of chromium-doped tin oxide material

[0058] 5 mmol of stannous chloride dihydrate, 0.5 mmol of cetyltrimethylammonium chloride, 10 mmol of ammonium chloride, and 0.2 mmol of chromium acetate are added to a beaker containing 60 ml of distilled water and stirred at a stirring rate of 600 rpm / min for 30 min until completely dissolved. Then it is transferred to a reaction kettle and the reaction kettle is placed in an oven at 100 °C for 20 h. After taking out the reaction kettle from the oven and waiting for it to cool, the product is centrifuged, filtered, washed, and dried. Finally, the dried powder is sintered in a muffle furnace at 500 °C for 2 h to obtain a chromium-doped tin oxide material with a particle size of about 40 nm.

[0059] II: Preparation of LCP-based LDS Material Products

[0060] Mix 20 g of LCP, 1.5 g of chromium-doped tin oxide (40 nm particle size), 3 g of glass fiber, 1 g of elastomer toughening agent maleic anhydride-grafted ethylene-propylene-diene monomer, 0.5 g of carbon nanotubes, and 0.2 g of antioxidant evenly, and then extrude and pelletize to obtain a high impact resistance and light-colored LCP-based LDS material. Extrusion melting temperature: feeding section: 280 °C, compression section: 300 °C, homogenization section: 310 °C, screw speed 150 rpm / min. Finally, injection mold into test specimens using an injection molding machine. Injection molding parameters: barrel nozzle temperature 330 °C, front section of the barrel temperature 320 °C, middle section of the barrel temperature 310 °C, rear section of the barrel temperature 300 °C; mold temperature 120 °C, injection pressure 80 Mpa, holding pressure 20 Mpa, screw speed 100 rpm / min.

[0061] Example 2

[0062] A preparation method of an impact-resistant and light-colored LCP-based LDS material, the method comprising:

[0063] I: Preparation of chromium-doped tin oxide material

[0064] Add 5 mmol of stannous chloride dihydrate, 0.5 mmol of cetyltrimethylammonium bromide, 10 mmol of ammonium chloride, and 0.4 mmol of chromium acetate to a beaker containing 60 ml of distilled water, and stir at a stirring rate of 600 rpm / min for 30 min until completely dissolved. Then transfer it to a reaction kettle and place the reaction kettle in an oven at 100 °C for 20 h. Take out the reaction kettle from the oven and wait for it to cool, then centrifuge, filter, wash, and dry the product. Finally, sinter the dried powder in a muffle furnace at 800 °C for 2 h to obtain chromium-doped tin oxide material with a particle size of about 30 nm.

[0065] II: Preparation of LCP-based LDS material

[0066] Mix 20 g of LCP, 1.5 g of chromium-doped tin oxide (30 nm particle size), 3 g of glass fiber, 1.5 g of elastomer toughening agent maleic anhydride-grafted ethylene-propylene-diene monomer, 0.6 g of carbon nanotubes, and 0.2 g of antioxidant evenly, and then extrude and pelletize to obtain a high impact resistance and light-colored LCP-based LDS material. Extrusion melting temperature: feeding section: 280 °C, compression section: 300 °C, homogenization section: 310 °C, screw speed 150 rpm / min. Finally, injection mold into test specimens using an injection molding machine. Injection molding parameters: barrel nozzle temperature 330 °C, front section of the barrel temperature 320 °C, middle section of the barrel temperature 310 °C, rear section of the barrel temperature 300 °C; mold temperature 120 °C, injection pressure 80 Mpa, holding pressure 20 Mpa, screw speed 100 rpm / min.

[0067] Example 3

[0068] A preparation method of an impact-resistant light-colored LCP-based LDS material, the method comprising:

[0069] I. Preparation of chromium-doped tin oxide material

[0070] Add 5 mmol of stannous chloride dihydrate, 0.5 mmol of cetyltrimethylammonium bromide, 10 mmol of ammonium chloride, and 0.4 mmol of chromium acetate into a beaker containing 60 ml of distilled water, and stir at a stirring rate of 600 rpm / min for 30 min until completely dissolved. Then transfer it to a reaction kettle and place the reaction kettle in an oven at 120 °C for 16 h. Take out the reaction kettle from the oven and wait for it to cool, then centrifuge, filter, wash, and dry the product. Finally, sinter the dried powder in a muffle furnace at 600 °C for 2 h to obtain chromium-doped tin oxide material with a particle size of about 25 nm.

[0071] II. Preparation of LCP-based LDS material

[0072] Mix 20 g of LCP, 1.5 g of chromium-doped tin oxide (particle size 25 nm), 3 g of glass fiber, 2 g of elastomer toughening agent maleic anhydride-grafted ethylene-propylene-diene monomer rubber, 0.5 g of carbon nanotube, and 0.2 g of antioxidant evenly, and then extrude and pelletize to obtain a high impact-resistant light-colored LCP-based LDS material. Extrusion melting temperature: feeding section: 280 °C, compression section: 300 °C, homogenization section: 310 °C, screw speed 150 rpm / min. Finally, inject and mold into test specimens through an injection molding machine, injection molding parameters: nozzle temperature of the barrel 330 °C, front section temperature of the barrel 320 °C, middle section temperature of the barrel 310 °C, rear section temperature of the barrel 300 °C; mold temperature 120 °C, injection pressure 80 Mpa, holding pressure 20 Mpa, screw speed 100 rpm / min.

[0073] Example 4

[0074] A preparation method of an impact-resistant light-colored LCP-based LDS material, the method comprising:

[0075] I. Preparation of chromium-doped tin oxide material

[0076] Add 10 mmol of stannous chloride dihydrate, 1 mmol of cetyltrimethylammonium bromide, 20 mmol of ammonium chloride, and 0.6 mmol of chromium acetate into a beaker containing 150 ml of distilled water, and stir at a stirring rate of 600 rpm / min for 30 min until completely dissolved. Then transfer it to a reaction kettle and place the reaction kettle in an oven at 120 °C for 16 h. Take out the reaction kettle from the oven and wait for it to cool, then centrifuge, filter, wash, and dry the product. Finally, sinter the dried powder in a muffle furnace at 600 °C for 2 h to obtain chromium-doped tin oxide material with a particle size of about 15 nm.

[0077] II: Preparation of LCP-based LDS Materials

[0078] Mix 20 g of LCP, 2.5 g of chromium-doped tin oxide (with a particle size of 15 nm), 3 g of glass fiber, 1 g of elastomer toughening agent maleic anhydride grafted ethylene-propylene-diene monomer, 0.5 g of carbon nanotubes, and 0.2 g of antioxidant evenly, and then extrude and pelletize to obtain a high impact resistance and light-colored LCP-based LDS material. Extrusion melting temperature: feeding section: 280 °C, compression section: 300 °C, homogenization section: 310 °C, screw speed 150 rpm / min. Finally, injection mold into test specimens through an injection molding machine, and the injection molding parameters are: barrel nozzle temperature 330 °C, front section temperature of the barrel 320 °C, middle section temperature of the barrel 310 °C, rear section temperature of the barrel 300 °C; mold temperature 120 °C, injection pressure 80 Mpa, holding pressure 20 Mpa, screw speed 100 rpm / min.

[0079] Example 5

[0080] A preparation method of an impact-resistant light-colored LCP-based LDS material, the method comprising:

[0081] I: Preparation of Chromium-Doped Tin Oxide Material

[0082] Add 10 mmol of stannous chloride dihydrate, 1 mmol of cetyltrimethylammonium bromide, 20 mmol of ammonium chloride, and 0.6 mmol of chromium acetate to a beaker containing 150 ml of distilled water, and stir at a stirring rate of 600 rpm / min for 30 min until completely dissolved. Then transfer it to a reaction kettle and place the reaction kettle in an oven at 120 °C for 16 h. Take out the reaction kettle from the oven and wait for it to cool, then centrifuge, filter, wash, and dry the product. Finally, sinter the dried powder in a muffle furnace at 600 °C for 2 h to obtain chromium-doped tin oxide material with a particle size of about 20 nm.

[0083] II: Preparation of LCP-based LDS Materials

[0084] Mix 20 g of LCP, 2.5 g of chromium-doped tin oxide (with a particle size of 20 nm), 3.5 g of glass fiber, 2 g of elastomer toughening agent maleic anhydride grafted ethylene-propylene-diene monomer, 0.8 g of carbon nanotubes, and 0.2 g of antioxidant evenly, and then extrude and pelletize to obtain a high impact resistance and light-colored LCP-based LDS material. Extrusion melting temperature: feeding section: 280 °C, compression section: 300 °C, homogenization section: 310 °C, screw speed 150 rpm / min. Finally, injection mold into test specimens through an injection molding machine, and the injection molding parameters are: barrel nozzle temperature 330 °C, front section temperature of the barrel 320 °C, middle section temperature of the barrel 310 °C, rear section temperature of the barrel 300 °C; mold temperature 120 °C, injection pressure 80 Mpa, holding pressure 20 Mpa, screw speed 100 rpm / min.

[0085] Comparative Example 1

[0086] A preparation method of an LCP-based LDS material, the method comprising:

[0087] Mix 20 g of LCP, 2 g of copper chromite black, 3 g of glass fiber, 0.5 g of carbon nanotube, and 0.2 g of antioxidant evenly, and then extrude and pelletize to obtain the LCP-based LDS material. Extrusion melting temperature: feeding section: 280 °C, compression section: 300 °C, homogenization section: 310 °C, screw speed 150 rpm / min. Finally, injection mold into test specimens through an injection molding machine, injection molding parameters: barrel nozzle temperature 330 °C, front section of the barrel temperature 320 °C, middle section of the barrel temperature 310 °C, rear section of the barrel temperature 300 °C; mold temperature 120 °C, injection pressure 80 Mpa, holding pressure 20 Mpa, screw speed 100 rpm / min.

[0088] The injection molded products of the LCP-based LDS materials prepared in Examples 1 to 5 and Comparative Example 1 were tested, and the results are shown in the following table:

[0089] Product color Izod impact strength / (KJ / mm) Example 1 Light yellow 68 Example 2 Light yellow 95 Example 3 Light yellow 86 Example 4 Light yellow 71 Example 5 Light yellow 90 Comparative Example 1 Black 36

[0090] It can be seen from the above table that by using the method provided in the embodiments of the present application, a light-colored LCP-based LDS material was prepared by preparing chromium-doped tin oxide and adding it as a laser sensitizer to the LCP resin, and the color changed from black to light yellow; a high impact-resistant LCP-based LDS material was prepared by reducing the particle size of the chromium-doped tin oxide powder and blending an appropriate amount of an elastomeric toughening agent, maleic anhydride-grafted ethylene-propylene-diene monomer, and the cantilever beam impact strength was increased from 36 KJ / mm to about 70 - 90 KJ / mm.

[0091] The various embodiments of the present application may exist in the form of a range; it should be understood that the description in the form of a range is only for convenience and brevity, and should not be construed as a rigid limitation on the scope of the present application; therefore, it should be considered that the description of the range has specifically disclosed all possible sub-ranges and single values within that range. For example, it should be considered that the description of the range from 1 to 6 has specifically disclosed sub-ranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and single numbers within the range, such as 1, 2, 3, 4, 5, and 6, regardless of the range. Additionally, whenever a numerical range is indicated herein, it means including any cited number (fraction or integer) within the indicated range.

[0092] In the present application, unless otherwise stated, the orientation terms such as "upper" and "lower" specifically refer to the drawing direction in the drawings. Additionally, in the description of the specification of the present application, the terms "comprising", "including", etc. mean "including but not limited to".

[0093] In this document, 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 actual relationship or order between these entities or operations. In this document, "and / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. Where A and B can be singular or plural. In this document, "at least one" means one or more, and "a plurality" means two or more. "At least one kind", "at least one of the following items" or similar expressions refer to any combination of these items, including any combination of single items or plural items. For example, "at least one of a, b, or c", or, "at least one of a, b, and c" can both represent: a, b, c, a - b (that is, a and b), a - c, b - c, or a - b - c, where a, b, and c can be single or multiple respectively.

[0094] The above description is only the specific implementation manners of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A preparation method of an impact-resistant light-colored LCP-based LDS material, characterized in that, The method includes: Preparing chromium-doped tin oxide material, where the particle size of the chromium-doped tin oxide material is 10 - 50 nm; Mixing LCP, the chromium-doped tin oxide material, glass fiber, elastomer toughening agent, carbon nanotube, and antioxidant, and extruding and pelletizing them. The elastomer toughening agent includes maleic anhydride grafted ethylene-propylene-diene monomer rubber to obtain LDS material; The method for preparing chromium-doped tin oxide material includes: Mixing stannous chloride dihydrate, cationic surfactant, ammonium chloride, and chromium acetate in a solvent to obtain a mixture; Heating the mixture for reaction to obtain a precipitate; Sintering the precipitate to obtain chromium-doped tin oxide material; The molar ratio of the chromium acetate to the stannous chloride dihydrate is 0.01 - 0.1; The molar ratio of the ammonium chloride to the stannous chloride dihydrate is 1.8 - 2.2; The relationship between the molar addition amount a of the cationic surfactant and the total molar addition amount b of the stannous chloride dihydrate and the ammonium chloride satisfies: a / b = 1% - 5%; the temperature of the heating reaction is 100 - 120 °C, and the temperature of the sintering is 500 - 800 °C; The mass addition amount of the glass fiber is 10% - 30% of the mass addition amount of the LCP; The mass addition amount of the carbon nanotube is 1% - 5% of the mass addition amount of the LCP; The mass addition amount of the maleic anhydride grafted ethylene-propylene-diene monomer rubber is 3% - 15% of the mass addition amount of the LCP; The mass addition amount of the chromium-doped tin oxide is 5% - 15% of the mass addition amount of the LCP; The mass addition amount of the antioxidant is 0.5% - 2% of the mass addition amount of the LCP.

2. The preparation method of the impact-resistant light-colored LCP-based LDS material according to claim 1, wherein, The cationic surfactant includes at least one of cetyltrimethylammonium bromide, cetyltrimethylammonium chloride, and octadecyltrimethylammonium chloride.

3. The method for preparing an impact-resistant light-colored LCP-based LDS material according to claim 1, wherein The time of the heating reaction is 12 - 24 h.

4. The method for preparing an impact-resistant light-colored LCP-based LDS material according to claim 1, wherein The time of the sintering is 1.5 - 2.5 h.

5. A shock-resistant light-colored LCP-based LDS material, characterized in that, The LDS material is prepared by the method for preparing an impact-resistant light-colored LCP-based LDS material according to any one of claims 1 to 4.

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