Continuous long fiber-reinforced thermoplastic resin and its preparation method and molding equipment

A technology for reinforcing thermoplastics and thermoplastic resins, which is applied in the field of continuous long fiber reinforced thermoplastic resins. It can solve the problems of low fiber bundle temperature, affecting thermoplastic resin impregnation, and poor dispersion and impregnation effects, so as to improve dispersion effect, fiber impregnation and dispersion efficiency. High, the effect of increasing the contact temperature

Inactive Publication Date: 2012-10-17
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this molding method, the impregnation unit is only composed of a rolling device. Since the fiber bundle has not been preheated, the temperature of the fiber bundle is low, which a

Method used

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  • Continuous long fiber-reinforced thermoplastic resin and its preparation method and molding equipment
  • Continuous long fiber-reinforced thermoplastic resin and its preparation method and molding equipment

Examples

Experimental program
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Example Embodiment

[0026] Example 1

[0027] Such as figure 1 with figure 2 As shown, a molding equipment for producing continuous long fiber-reinforced thermoplastic resin, the molding equipment in the extrusion direction includes: a fiber preheating device 1, a melt impregnation die 2 and a secondary rolling device 3; the fiber preheating device 1 consists of It consists of 4 dispersing rollers 4 arranged at equal intervals. The diameter of the dispersing roller is 45mm, and the distance between two adjacent dispersing rollers in the horizontal direction is 45mm. The dispersing roller 4 is provided with the heat source of the dispersing roller electric heating rod 5 in the core; The dipping mold 2 is composed of 5 tension rollers 7 arranged at equal intervals. The diameter of the tension roller is 50mm. The distance between two adjacent tension rollers in the horizontal direction is 50mm; the first group of tension rollers and the last group of tension rollers are respectively composed of The u...

Example Embodiment

[0028] Example 2

[0029] Such as figure 1 with figure 2 As shown, a molding equipment for producing continuous long fiber-reinforced thermoplastic resin, the molding equipment in the extrusion direction includes: a fiber preheating device 1, a melt impregnation die 2 and a secondary rolling device 3; the fiber preheating device 1 consists of 4 dispersing rollers 4 arranged at equal intervals, the diameter of the dispersing roll is 100mm, the distance between two adjacent dispersing rolls in the horizontal direction is 100mm, and the dispersing roll 4 is provided with a heat source by the electric heating rod 5 of the dispersing roll in the core; The dipping mold 2 is composed of 5 tension rollers 7 arranged at equal intervals. The diameter of the tension roller is 100mm, and the distance between two adjacent tension rollers in the horizontal direction is 60mm. The first group of tension rollers and the last group of tension rollers are respectively composed of The upper tensio...

Example Embodiment

[0030] Example 3

[0031] 1) Using the molding equipment prepared in Example 1 to produce continuous long fiber reinforced thermoplastic resin, a continuous long fiber bundle 6 is alternately passed around the four dispersing rollers 4 of the fiber preheating device 1, and the core of the dispersing roller is electrically heated Under the action of the rod 5, the set preheating temperature of 180°C is reached, and the initial dispersion is obtained at the same time;

[0032] 2) Introduce the continuous long fiber bundle 6 preheated and dispersed in step 1) into the melt-dipping mold 2, and alternately bypass the five tension rollers 7 in the cavity; at the same time, the thermoplastic resin melt is connected to the device 13 by the extruder Enter the melt dipping mold 2; by adjusting the adjustment screw 10 on the melt dipping mold 2, the calendering gap between the upper tension roller 8 and the lower tension roller 9 is adjusted to 0.1mm, and the thermoplastic melt obtains instan...

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Abstract

The invention discloses a continuous long fiber-reinforced thermoplastic resin and its preparation method and molding equipment. The molding equipment comprises a fiber preheating device 1, a melt impregnation mold 2 and a secondary rolling device 3. The preparation method comprises the following steps of 1, alternately bypassing dispersion rollers (4) with continuous long fibers, and simultaneously heating dispersion roller electrically-heating rods (5) so that preliminary dispersion of the continuous long fibers is realized, 2, alternately bypassing tension rollers (7) with the treated continuous long fibers, and simultaneously feeding thermoplastic resin melt into the melt impregnation mold 2 from an extruder connection device (13) so that the continuous long fibers and the thermoplastic resin melt are subjected to melt impregnation, and 3, alternately bypassing rollers (11) with the continuous long fibers and the thermoplastic resin melt treated by the step 2, and carrying out rolling to obtain the continuous long fiber-reinforced thermoplastic resin. The continuous long fiber-reinforced thermoplastic resin prepared by the molding equipment has the advantages of good impregnation effects, high impregnation efficiency and excellent performances.

Description

technical field [0001] The invention relates to a continuous long fiber reinforced thermoplastic resin, in particular to a continuous long fiber reinforced thermoplastic resin and its preparation method and molding equipment. Background technique [0002] Continuous long fiber reinforced thermoplastic resin is a reinforced thermoplastic resin whose reinforcing fibers are arranged in one direction and whose length is equal to the length of the resin particles. The resin is evenly distributed among the fibers to form a continuous phase to fix the spatial position of the fibers and Transfer loads within the material. Compared with ordinary short fiber reinforced thermoplastic resins, it has more outstanding mechanical properties, heat resistance, warpage resistance, dimensional stability, etc., so it can manufacture products with excellent mechanical properties, such as auto parts, electronic devices , chemical components, etc. [0003] There have been some disclosed impregna...

Claims

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Application Information

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IPC IPC(8): B29C70/16B29C70/50B29C70/54B29B15/08
Inventor 贾明印王亮亮于建陈步宁傅送保徐建波王洪波刘慧宏陈科宇
Owner CHINA NAT OFFSHORE OIL CORP
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