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High-performance continuous synthetic fiber reinforced thermoplastic composite and preparation method thereof

A technology for reinforcing thermoplastic and continuous fibers, which is used in the field of thermoplastic composite materials to achieve the effects of reducing cost, improving reinforcement effect, and improving impact resistance and fatigue resistance.

Inactive Publication Date: 2012-05-30
LIAONING LIAOJIE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, there have been reports at home and abroad on the mixing and strengthening of inorganic fibers such as glass fibers and other fibers, but most of them are based on short fiber blending and mixed weaving. There is no direct compounding of continuous inorganic fibers mixed with continuous organic fibers and resins. To improve the properties of single fiber reinforced thermoplastic composites reported

Method used

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  • High-performance continuous synthetic fiber reinforced thermoplastic composite and preparation method thereof
  • High-performance continuous synthetic fiber reinforced thermoplastic composite and preparation method thereof
  • High-performance continuous synthetic fiber reinforced thermoplastic composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Production process such as figure 1 As shown, the alkali-free glass fiber and aramid fiber are placed on the creel (S11) according to the different weight ratios shown in Table 2, and are introduced from the creel into the spreading device (S12), and then drawn by the pulling device The continuous fiber tape (S13) which is evenly mixed with alkali-free glass fiber and aramid fiber is obtained by spreading evenly under the bottom, and then it is preheated by the infrared heating system and then introduced into the double extrusion die head. The preheating temperature is 200 ° C, and the preheating time is 8s. The matrix resin is selected as polypropylene, and the auxiliary agent is compatibilizer PP-g-MAH. Through the method of extrusion coating, the modified resin is melt-extruded (S14) with double extrusion dies and the continuous fiber tape is pre-processed. Impregnation, composite molding at the composite unit (S15), the continuous fiber tape is flattened (S16), coo...

Embodiment 2

[0033] The reinforcing fibers in Example 2 are alkali-free glass fibers and ultra-high molecular weight polyethylene fibers; other operating procedures and test methods are the same as in Example 1, and the test results are listed in Table 3.

Embodiment 3

[0035] In Example 3, the reinforcing fibers are alkali-free glass fibers and aramid fibers; the matrix resin is nylon 6; the auxiliary agents are antioxidant 1010 and antioxidant 168. Other operation process and test method are identical with embodiment 1, and test result is listed in table 4.

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Abstract

The invention discloses a high-performance continuous synthetic fiber reinforced thermoplastic composite and a preparation method thereof. The composite comprises the following components including, by weight, 35-60 parts of reinforcing filler, 35-60 parts of thermoplastic resin and 0.5-5 parts of aids, wherein the reinforcing filler includes synthetic fibers which include, by weight, 55-95% of inorganic fibers and 5-45% of organic fibers. The continuous inorganic fibers and the high-performance organic fibers are mixed to reinforce the thermoplastic resin so as to improve the performance of the composite, and advantages of various fibers are integrated to obtain the continuous fiber reinforced thermoplastic composite which is light in weight, high in strength and high in modulus while impact resistance and fatigue resistance are particularly improved. Mixing a small quantity of expensive high-performance organic fibers with the inorganic fibers can achieve better enhancing effect while cost is effectively reduced, so that higher using requirements of materials can be met.

Description

[0001] technical field [0002] The invention relates to a thermoplastic composite material, in particular to a high-performance thermoplastic composite material reinforced by mixing multiple continuous fibers and a preparation method thereof. [0003] Background technique [0004] General inorganic fibers, such as glass fibers, carbon fibers and basalt fibers, have good creep resistance and bonding properties, but they are inferior to UHMWPE fibers and aramid fibers in many aspects such as specific strength and impact resistance. The biggest disadvantage of inorganic fiber reinforced composite materials is brittleness, low elongation at break, easy to cause damage after impact, and cause a large decrease in the mechanical properties of composite materials, especially the residual compressive strength after impact. Therefore, improving the toughness and impact resistance of inorganic fiber reinforced composites is the key to their wide application and development. [0005]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/00C08L23/06C08L23/12C08L77/00C08L69/00C08L67/00C08L81/02C08L77/10C08K13/04C08K7/14C08K7/10C08K7/06B29C47/92B29C48/92
CPCB29B7/90B29B7/38B29C48/0022B29C48/92B29C2948/9258B29C2948/92704B29C2948/92895B29C2948/92904B29C2948/92933
Inventor 冉廷宝
Owner LIAONING LIAOJIE SCI & TECH
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