Glass fiber reinforced PBT (Poly Butylenes Terephthalate)/PP (Polypropylene) alloy material and preparation method thereof

A technology of alloy material and PBT resin, applied in the field of glass fiber reinforced PBT/PP alloy material and its preparation, can solve the problems of low notched impact performance of PBT, high production cost, poor dimensional stability of PP, etc. The effect of high efficiency and large market competitiveness

Inactive Publication Date: 2012-01-25
SHENZHEN KEJU NEW MATERIAL
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  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the technical problems of low notched impact performance of PBT, high production cost, and poor dimensional stability of PP in the prior art, and provide a glass fiber reinforced PBT / PP alloy with high impact strength and low cost Material

Method used

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  • Glass fiber reinforced PBT (Poly Butylenes Terephthalate)/PP (Polypropylene) alloy material and preparation method thereof
  • Glass fiber reinforced PBT (Poly Butylenes Terephthalate)/PP (Polypropylene) alloy material and preparation method thereof

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preparation example Construction

[0052] The preparation method of embodiment 1 to 7 of the present invention is as follows:

[0053] First, weigh the raw materials according to the composition ratio in Table 1, then dry the PBT resin at 120°C for 2-3 hours, and control the moisture content below 0.05%; dry the PP resin at 75-80°C for 2-3 hours, control The moisture content is below 0.05%; put the dried PBT resin PP resin, self-made compatibilizer, flame retardant, flame retardant synergist, 1 part lubricant, 1 part antioxidant in a mixing bucket and stir for 10 minutes. Then it is extruded and granulated by a twin-screw extruder, and long glass fibers are added in the middle section of the extruder. The processing temperature is 190-200℃ in the first zone, 200-210℃ in the second zone, 210-220℃ in the third zone, 210-220℃ in the fourth zone, 200-210℃ in the fifth zone, 190-200℃ in the sixth zone, and 210℃ in the seventh zone. -220°C, the conveying time of the mixture in the extruder is 1-2 minutes.

[0054] ...

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Abstract

The invention discloses a glass fiber reinforced PBT (Poly Butylenes Terephthalate)/PP (Polypropylene) alloy material and a preparation method thereof. The glass fiber reinforced PBT/PP alloy material consists of the following components in parts by weight: 100 parts of PBT resin, 30-50 parts of PP resin, 10-25 parts of home-made compatilizer, 20-40 parts of flame retardant, 8-20 parts of flame retardant synergist, 1-3 parts of lubricant, 0.2-1.5 parts of antioxidant and 35-70 parts of glass fiber, wherein the home-made compatilizer is one or more of PP-grafted maleic anhydride, POE (Polyolefin Elastomer)-grafted polyglycidyl acrylate or acrylic ester-grafted ternary ethylenepropylene elastomer. In the PBT/PP alloy material, the home-made PBT/PP alloy compatilizer is selected, so that the compatibility of a PBT/PP alloy is improved, the comprehensive mechanical performance is enhanced, and the technical problems of low gap impact performance, high production cost and poor PP size stability of the PBT in the prior art are solved greatly.

Description

[technical field] [0001] The invention relates to the field of polymer materials, in particular to a glass fiber reinforced PBT / PP alloy material and a preparation method thereof. [Background technique] [0002] Polybutylene terephthalate (PBT) is an excellent thermoplastic engineering plastic, because of its excellent properties such as high heat resistance, toughness, fatigue resistance, weather resistance, and low water absorption, especially good comprehensive Famous for its performance, it has been widely used at home and abroad in recent years. After being modified by glass fiber or mineral filling to enhance flame retardancy, its mechanical strength is higher, and its molding shrinkage rate has been greatly improved, which can replace some metals, thermosetting plastics and other thermoplastics. However, PBT is very sensitive to the notch, and the notch impact strength is very low, which is its main shortcoming as an engineering plastic. [0003] Polypropylene (PP) ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L23/14C08L51/06C08L63/00C08K13/04C08K7/14C08K3/22C08K3/24C08K5/3492C08K5/136C08K5/03C08F255/02C08F255/06B29C47/92B29C48/92
Inventor 徐东徐永胡玉洁
Owner SHENZHEN KEJU NEW MATERIAL
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