Method for preparing continuous fiber multiaxial fabric reinforced thermoplastic composite material

A fabric reinforcement and composite board technology, applied in the direction of chemical instruments and methods, flat products, synthetic resin layered products, etc., can solve problems such as difficulty in threading or mending yarn, difference in resin diversion temperature, and difficulty in mold cavity cleaning, etc., to achieve Effects of improving quality, preventing breakage, and securing stability

Inactive Publication Date: 2011-10-19
CHANGZHOU HONGFA ZONGHENG ADVANCED MATERIAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical bottleneck of this method lies in: the process design of the wide-width die head is complex and the manufacturing cost is high; it is difficult to control the process of fiber impregnation inside the cavity, such as: the product width of the wire bundle monofilament arrangement after fiber spreading is subject to certain restrictions. Limitations, when melting and impregnating through a high-temperature and high-pressure mold cavity; it is very easy to cause fiber bundles or monofilament breakage, and there are process defects such as difficulty in threading or repairing yarn and difficult cleaning of the mold cavity, including the existence of the mold cavity due to the increase in width. In the impregnation process, the technical bottleneck of the resin shunt temperature difference and damping phenomenon
Moreover, it is difficult to lay multi-axial fabrics into new material systems by fusion method. To realize the one-time preparation of thermoplastic composite sheets of high-performance fiber fabrics such as 0° / 90°±45° and ±60°, there are still many processes that need to be improved. deficiencies or defects in the equipment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Method for preparing continuous fiber multiaxial fabric reinforced thermoplastic composite material
  • Method for preparing continuous fiber multiaxial fabric reinforced thermoplastic composite material
  • Method for preparing continuous fiber multiaxial fabric reinforced thermoplastic composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0034] The reinforcing material is selected from glass fibers and the thermoplastic resin is selected from polypropylene. Prepare 162Kg of 1100tex glass fiber and 132Kg of PP resin film with an areal density of 100g / m2. The product width is 1250mm, the original width of the single yarn is 4.5mm, and the areal densities of 0° / 90° and ±45° are 131g / m2, 158g / m2, 170g / m2 2 and 170g / m 2 , the widths of each layer of yarn after spreading are 10mm, 8mm, 7.6mm and 7.6mm;

[0035] (1) Draw the yarn in direction A from the creel, pass through the godet roller and the dividing reed in turn, and then control the tension of the yarn through the pulling roller to ensure the stability and parallel arrangement when it is drawn out, and then import it into the oven Preheating in the middle, the preheating temperature range is 200°C, and the yarn in the A direction is spread into a wide, straight and evenly distributed monofilament ribbon-shaped material with a certain width, which is a strai...

Embodiment 2

[0047] The reinforcing material is selected from glass fiber, the thermoplastic resin is selected from polyphenylene sulfide, prepare 112Kg of glass fiber of 1100tex and 65Kg of polyester PPS resin film with surface density of 100g / m2, the width is 2450mm, and the original width of single yarn is 4.5mm. The surface density in direction and latitudinal direction is 178g / m respectively 2 and 212g / m 2 , calculated by the process, the warp density and weft density are 3.8 threads / inch and 4.5 threads / inch respectively, and the widths after stretching in the warp and weft directions are 6.8mm and 5.8mm respectively;

[0048] (1) Draw the yarn in direction A from the creel, pass through the godet roller and the dividing reed in turn, and then control the tension of the yarn through the pulling roller to ensure the stability and parallel arrangement of the yarn when it is drawn out, and then import it into the oven Preheating in the middle, the preheating temperature range is 300°C,...

Embodiment 3

[0063] The reinforcing material is selected from glass fiber, and the thermoplastic resin is selected from polyphenylene sulfide. Prepare 800tex glass fiber 100Kg and area density 100g / m 2 The polyester PPS resin film is 50Kg, the width is 1650mm, the original width of single yarn is 4.5mm, and the surface density in warp direction and weft direction is 170g / m respectively 2 and 206g / m 2 , Calculated by the process, the warp density and weft density are 3.2 threads / inch and 4.0 threads / inch, respectively, and the widths after stretching in the warp and weft directions are 6.5mm and 5.5mm, respectively.

[0064] Four layers of multi-axially reinforced pre-consolidated sheets are compositely laminated to form a composite sheet with a thickness of 2mm; as the material for the upper and lower interfaces of the product in this example, the core structure in the middle of the sheet is selected from aluminum honeycomb coils, (the expansion ratio of Thickness 20mm), prepare a high-p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a method for preparing a continuous fiber multiaxial fabric reinforced thermoplastic composite material. The prepared continuous fiber multiaxial reinforced thermoplastic preconsolidating material is taken as a base material of the composite board, and combined with other functional materials for forming a novel material system which can be used for producing multiaxial fabric reinforced thermoplastic composite materials for different industries and solving the technical bottleneck that different materials have different composite bonding difficulties. According to the invention, the prepared composite material is constructed by continuous fiber multiaxial direaction; materials have the characteristics of resilience and uniform stressing on different directions. In addition, light sandwich panel formed by a honeycomb core material provides higher impact strength of materials, which is suitable for preparing structural parts and interior decorative parts in the field of railway car containers of navigation and aviation. The product of light-weight flame retardant can be recovered and used, and is more suitable for industrialization scale production of the warp knitting industry organization.

Description

technical field [0001] The invention relates to a preparation method of a composite board, in particular to a preparation method of a thermoplastic composite board reinforced by multiaxial fabrics. Background technique [0002] Continuous fiber multi-axial fabric reinforced thermoplastic composite sheet has unique preparation technology and product advantages. It has developed rapidly in the international market in recent years. Some developed countries in Europe and the United States have applied some products to navigation, aviation, military and civil fields. The development trend is to replace the current thermosetting materials, and replace the thin stainless steel coil or aluminum plate to prepare products, so as to achieve the goal of high performance, light weight and energy saving. [0003] Continuous Fiber Multiaxially Reinforced Fabric Thermoplastic Composite Sheets Load-bearing composite sheets are a relatively new but rapidly growing development in the field of ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/50B32B27/12B32B37/04B32B37/10B29L7/00B29L9/00
Inventor 黄亦赛谈昆伦黄云清季建强
Owner CHANGZHOU HONGFA ZONGHENG ADVANCED MATERIAL TECH
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