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Thermoplastic resin composition for millimeter-wave radar members, molded article, and resin composition production method

A technology of thermoplastic resin and millimeter-wave radar, which is applied in the direction of radio wave reflection/re-radiation, use of re-radiation, radio wave measurement system, etc., can solve the problem of inability to realize the performance of millimeter-wave radar and the inability to accurately detect obstacles, mm Wave and reflected wave weakening and other problems, to achieve the effect of excellent laser welding, excellent low warpage and appearance, and stable deviation

Pending Publication Date: 2022-01-11
MITSUBISHI ENG PLASTICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the millimeter-wave radome does not exhibit sufficient millimeter-wave transparency, it cannot accurately detect obstacles, etc., because the emitted millimeter-wave and reflected waves from the transmitting and receiving antennas are weakened, and the desired performance of the millimeter-wave radar cannot be realized. performance

Method used

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  • Thermoplastic resin composition for millimeter-wave radar members, molded article, and resin composition production method
  • Thermoplastic resin composition for millimeter-wave radar members, molded article, and resin composition production method
  • Thermoplastic resin composition for millimeter-wave radar members, molded article, and resin composition production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 3 and comparative example 1

[0190] The pellets of the thermoplastic resin composition were obtained by uniformly mixing the components shown in the above Table 1 except the glass fibers using a drum mixer in the proportions (parts by mass) shown in the following Table 2, from a twin-screw The obtained mixture was fed into the main feed port of a kneading extruder (TEX30α manufactured by Japan Steel Works, L / D=42), the barrel temperature of the first kneading section was set at 270° C., plasticized, and from the side Feed glass fibers to the feed port at the ratio shown in Table 2. After adding glass fibers, set the barrel temperature to 270 ° C, melt and knead at a discharge rate of 40 kg / h and a screw speed of 200 rpm, and extrude The obtained kneaded product was taken out, rapidly cooled in a water bath, and then formed into pellets using a pelletizer. Except in Example 2, kneading was performed under the above-mentioned conditions, and the screw kneading temperature was 278°C.

[0191] In Example 2, ...

Embodiment 4 to 7 and comparative example 2

[0223] [table 3]

[0224]

[0225] The pellets of the thermoplastic resin composition were obtained by uniformly mixing the other components shown in the above Table 3 except the glass fibers using a drum mixer in the ratio (parts by mass) shown in the following Table 4, from the twin-screw The obtained mixture was fed into the main feed port of a kneading extruder (TEX30α manufactured by Japan Steel Works, L / D=42), the barrel temperature of the first kneading section was set at 270° C., plasticized, and from the side Feed glass fibers to the feed port at the ratio shown in Table 4. After adding glass fibers, set the cylinder temperature to 220 °C, melt and knead at a discharge rate of 40 kg / h and a screw speed of 200 rpm, and extrude The obtained kneaded product was taken out, rapidly cooled in a water bath, and then formed into pellets using a pelletizer, and these pellets were evaluated in the same manner as in Example 1, and were subjected to the following evaluations. ...

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Abstract

This thermoplastic resin composition for millimeter-wave radar members is characterized by containing, with respect to 100 parts by mass of a polybutylene terephthalate resin (A), 15-65 parts by mass of a rubber-reinforced polystyrene-based resin (B1) and / or 10-70 parts by mass of a polycarbonate resin (B2) as component (B), 0.1-3 parts by mass of an epoxy compound (D), and 30-150 parts by mass of glass fibers (E).

Description

technical field [0001] The present invention relates to a thermoplastic resin composition for millimeter-wave radar components; a molded body; and a method for producing the resin composition, and more particularly to a thermoplastic resin composition for millimeter-wave radar components, which has a low relative permittivity and the resulting molded body Small deviation in relative permittivity, low warpage and excellent appearance, exhibits excellent strength and rigidity, exhibits high transmittance, and exhibits excellent laser weldability; molded body composed of it; and resin composition Manufacturing method. Background technique [0002] Millimeter-wave radar detects the existence of obstacles by emitting electromagnetic waves in the millimeter-wave band and receiving reflected waves returned after the emitted millimeter-wave hits obstacles, and is combined with other methods for detecting obstacles (through optical system lidar, and cameras) etc.), less affected by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02
CPCC08L67/02G01S7/02C08L25/04C08L63/00C08L35/06C08K7/14C08K9/08C08J3/20H01Q1/42C08J2367/02C08J2469/00C08J2463/02C08K2201/019G01S7/027C08G63/183C08L51/04C08L25/08C08L69/00B29C48/40C08F222/06C08G59/245C08K3/04C08L2201/10C08L2205/03G01S7/03G01S13/931
Inventor 庄司英和
Owner MITSUBISHI ENG PLASTICS CORP
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