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Low-emission long glass fiber reinforced polypropylene composite and preparation method thereof

A composite material and polypropylene technology, which is applied in the processing field of polypropylene composite materials, can solve problems such as the inability to achieve volatile substance suppression, and achieve the effects of broad market prospects and market benefits, low emission performance and simple preparation method.

Inactive Publication Date: 2015-04-29
JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above published patents can fix the degraded substances through physical or chemical methods, they cannot achieve the suppression of volatile substances during the processing of long glass fiber reinforced polypropylene composite materials.

Method used

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  • Low-emission long glass fiber reinforced polypropylene composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In this example, the low emission long glass fiber reinforced polypropylene composite material is prepared as follows:

[0030]First, 85.5KG of polypropylene PP PT231 (melt index is 26g / 10min), 2KG of anionic layered compound FM-300, 1KG of compatibilizer maleic anhydride grafted polypropylene BONDYRAM 1001CN (grafting rate 0.9 %), 0.6KG of processing aid N, N-ethylene bis stearic acid amide, 0.9KG of heat stabilizer after mixing, join in twin-screw extruder and carry out high-temperature melting, the temperature of twin-screw extruder Set it at 250°C to fully plasticize and melt the mixed material; then, input the obtained high-temperature melt into the dipping mold, and set the die head temperature of the dipping mold at 250°C; then, put 10KG The alkali-free continuous long glass fiber ER4305PM-2400 is transported into the impregnation mold. After the alkali-free continuous long glass fiber is dispersed and completely impregnated by the high-temperature melt, it is pu...

Embodiment 2

[0032] In this example, the low emission long glass fiber reinforced polypropylene composite material is prepared as follows:

[0033] First, 65KG of polypropylene PP PT231 (melt index is 26g / 10min), 0.5KG of anionic layered compound FM-300, 3KG of compatibilizer maleic anhydride grafted polypropylene BONDYRAM 1001CN (grafting rate 0.9 %), 0.6KG of processing aid N, N-ethylene bis stearic acid amide, 0.9KG of heat stabilizer after mixing, join in twin-screw extruder and carry out high-temperature melting, the temperature of twin-screw extruder Set it at 280°C to fully plasticize and melt the material; then, input the obtained high-temperature melt into the dipping mold, and set the die head temperature of the dipping mold at 300°C; The alkali-free continuous long glass fiber ER4305PM-2400 is transported into the impregnation mold. After the alkali-free continuous long glass fiber is dispersed and completely impregnated by the high-temperature melt, it is pulled out of the impr...

Embodiment 3

[0035] In this example, the low emission long glass fiber reinforced polypropylene composite material is prepared as follows:

[0036] First, graft polypropylene BONDYRAM 1001CN (grafting rate of 0.9%), the processing aid erucamide of 0.1KG, the heat stabilizer of 0.2KG after mixing evenly, join in the twin-screw extruder and carry out high-temperature melting, the temperature setting of the twin-screw extruder is 280 ℃, to The material is fully plasticized and melted; then, the obtained high-temperature melt is input into the impregnation mold, and the die head temperature of the impregnation mold is set at 330°C; then, 60KG of alkali-free continuous long glass fiber E6DR17-2400 -362KF is conveyed into the impregnation mold, the alkali-free continuous long glass fiber is dispersed and completely impregnated by the high-temperature melt, and then pulled out of the impregnation mold; finally, the impregnated long glass fiber is cooled and pelletized, and the particle length Co...

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Abstract

The invention discloses a low-emission long glass fiber reinforced polypropylene composite and a preparation method thereof. The low-emission long glass fiber reinforced polypropylene composite is concretely prepared from the following raw materials in percentage by weight: 28-88 percent of polypropylene, 10-60 percent of long glass fiber, 0.2-2 percent of an anionic layered compound, 1-6 percent of a compatibilizer, 0.2-2 percent of a heat stabilizer and 0.1-2 percent of a processing aid. Compared with prior art, according to the low-emission long glass fiber reinforced polypropylene composite disclosed by the invention, as the anionic layered compound is added in the raw material formula, on one hand, low-molecular volatiles generated during polypropylene composite processing can be adsorbed, acidic groups can also be fixed, degradation of the polypropylene is delayed, and the generation of the low-molecular volatile is reduced; on the other hand, the anionic layered compound and an antioxygen can have the synergistic effect, so that the heat-oxygen age stability time of a long glass fiber reinforced polypropylene material is prolonged; the preparation method is simple in method, safe in operation and uniform in dispersion of alkali-free continuous long glass fibers in the polypropylene and is capable of effectively preventing a glass fiber bundle from occurring on the surface of an injection product and greatly improving the quality of the polypropylene composite.

Description

technical field [0001] The invention relates to the technical field of processing polypropylene composite materials, in particular to a low-emission long glass fiber reinforced polypropylene composite material and a preparation method thereof. Background technique [0002] With the increasing cost pressure of automobile lightweight and parts industry, long glass fiber reinforced polypropylene (PP-LGF) due to its excellent dimensional stability, creep resistance, fatigue resistance, high rigidity, low density and other properties Advantages, as well as relatively low prices, are gradually replacing short glass fiber reinforced nylon and metal materials, becoming the development trend of the industry. The application of automotive interior functional parts made of long glass fiber reinforced polypropylene mainly includes instrument panel skeleton, armrest box body, gear box base, door inner panel, etc. [0003] For the sake of safety, environmental protection and health, the ...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L51/06C08K13/04C08K7/14C08K3/26
CPCC08L23/12C08J5/043C08J2323/12C08J2451/06C08J2463/00C08K2201/003C08L2205/03C08L51/06C08K13/04C08K7/14C08K3/26C08K5/20C08K5/526C08K5/372C08K5/18C08L63/00
Inventor 张超陈春华王琪李永华夏建盟周英辉丁超罗忠富
Owner JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD
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