Method for producing long-glass-fiber-reinforced polypropylene foaming injection product by using water as foaming agent

A polypropylene and long glass fiber technology, which is applied in the field of processing and manufacturing of polymer materials, can solve the problems of unclear applicability of long glass fiber reinforced polypropylene materials, and achieve the effects of avoiding adverse effects, facilitating addition and reducing weight.

Active Publication Date: 2016-06-22
宁海县第一注塑模具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus the applicability of this method to long glass fiber reinforced polypropylene remains unclear

Method used

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  • Method for producing long-glass-fiber-reinforced polypropylene foaming injection product by using water as foaming agent
  • Method for producing long-glass-fiber-reinforced polypropylene foaming injection product by using water as foaming agent
  • Method for producing long-glass-fiber-reinforced polypropylene foaming injection product by using water as foaming agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] First, a long glass fiber reinforced polypropylene masterbatch is prepared. Weigh 2750g of dried polypropylene 1 (PP1), 50g of antioxidant, 50g of lubricant and 150g of compatibilizer, mix them evenly and add them into the hopper of the plastic extruder, set the temperature of each section of the extruder to 150- 200°C, adjust the speed of the main engine to 60rpm, and at the same time, 2000g of glass fiber bundles are continuously drawn into the impregnation head, and the speed is adjusted to about 1.2m / s, and the composite material of glass fiber and polypropylene resin after impregnation is extruded. After the machine head is cooled, cut the material, and the cut length is 10mm, and the cross-sectional area is about 3.3mm 2 The long glass fiber reinforced polypropylene masterbatch is weighed, and its total mass is 5kg, so the glass fiber content in the long glass fiber reinforced polypropylene masterbatch is 40wt%.

[0048] Next, prepare the matrix mixture material....

Embodiment 2

[0062] First, a long glass fiber reinforced polypropylene masterbatch is prepared. Weigh 2250g of dried polypropylene 1 (PP1), 50g of antioxidant, 50g of lubricant and 150g of compatibilizer, mix them evenly and add them into the hopper of the extruder, set the temperature of each section of the extruder to 150-200 ℃, adjust the speed of the host machine to 60rpm, and at the same time, 2500g of glass fiber bundles are continuously drawn into the impregnation head, and the speed is adjusted to about 1.5m / s, and the impregnated glass fiber and polypropylene resin composite material extruder After the head is cooled, it is cut to a length of 8mm and a cross-sectional area of ​​about 3.1mm 2 The long glass fiber reinforced polypropylene masterbatch is weighed, and its total mass is 5kg, so the long glass fiber content in the long glass fiber reinforced polypropylene masterbatch is 50wt%.

[0063] Next, prepare the matrix mixture material. Weigh the dried polypropylene 2 (PP2), c...

Embodiment 3

[0075] First, a long glass fiber reinforced polypropylene masterbatch is prepared. Weigh 3250g of dried polypropylene 1 (PP1), 50g of antioxidant, 50g of lubricant and 150g of compatibilizer, mix them evenly and add them into the hopper of the extruder, set the temperature of each section of the extruder to 150-200 ℃, adjust the speed of the main machine to 100rpm, and at the same time, 1500g of glass fiber bundles are drawn into the impregnation head continuously, and the speed is adjusted to about 1.2m / s, and the impregnated glass fiber and polypropylene resin composite material extruder After the head is cooled, it is cut to a length of 15mm and a cross-sectional area of ​​about 3.5mm 2 The long glass fiber reinforced polypropylene masterbatch is weighed, and its total mass is 5kg, so the glass fiber content in the masterbatch is 30wt%.

[0076] Next, prepare the matrix mixture material. Weigh the dried polypropylene 2, compatibilizer, nucleating agent, activated carbon, ...

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Abstract

The invention discloses a method for producing a long-glass-fiber-reinforced polypropylene foaming injection product by using water as a foaming agent. The method comprises the following steps: (1) drying raw materials; (2) impregnating by an extruder to prepare a long-glass-fiber-reinforced polypropylene master batch; (3) preparing a matrix mixture; (4) spraying distilled water onto the matrix mixture to form a water-carrying material; (5) mixing the long-glass-fiber-reinforced polypropylene master batch with the water-carrying material to prepare a long-glass-fiber-reinforced polypropylene foaming material; and (7) adding the long-glass-fiber-reinforced polypropylene foaming material into a plastic injection machine to produce the foaming injection product. The method disclosed by the invention utilizes the water as the foaming agent to perform preparation and injection on the long-glass-fiber-reinforced polypropylene foaming material; and the water is easy to acquire, and thus, the water quantity can be easily controlled, thereby easily controlling the foaming degree, and greatly reducing the fiber ruptures. Therefore, the product has the characteristics of excellent properties, environment friendliness, high economy, wide applicability and the like, and is simple and convenient.

Description

technical field [0001] The invention belongs to the technical field of processing and manufacturing of polymer materials, and in particular relates to a method for producing long glass fiber reinforced polypropylene foam injection products by using water as a foaming agent. Background technique [0002] Compared with conventional polypropylene products, glass fiber reinforced polymer products have a series of advantages such as high mechanical properties, adjustable conductivity, light weight, and easy molding, so their applications in electronic information, electromagnetic shielding, automobile manufacturing and other fields continue to expand Among them, injection products account for a large proportion due to high productivity, product shape, and precise size. Among them, according to the length of the fiber, it can be divided into long-fiber reinforcement, short-fiber reinforcement, and continuous fiber reinforcement. Long fiber reinforced polymer composites refer to d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/06C08K13/04C08K7/14C08K3/34C08K3/04C08J9/12B29C45/78B29C45/77B29C47/92C08J3/22B29C48/92
CPCB29C45/0005B29C45/77B29C45/78B29C48/92B29C2948/9258B29C2948/92704C08J3/226C08J9/125C08J2203/10C08J2323/12C08J2423/12C08L23/12C08L2205/035C08L23/06C08K13/04C08K7/14C08K3/34C08K3/04
Inventor 周应国吴海宏苏北
Owner 宁海县第一注塑模具有限公司
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