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Hybrid fiber-enhanced r-PET engineering plastic and production method thereof

A technology of hybrid fibers and engineering plastics, applied in the field of hybrid fiber reinforced r-PET engineering plastics and its preparation, can solve the problems that plague the production and manufacture of plastic products and limit the application of fiber composite materials, achieve obvious smoke suppression effect and improve mechanical properties , the effect of improving performance

Inactive Publication Date: 2019-08-23
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The "floating fiber" phenomenon is a common surface quality problem of injection molded products, which has always plagued the production of plastic products and limited the application of fiber composite materials

Method used

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  • Hybrid fiber-enhanced r-PET engineering plastic and production method thereof
  • Hybrid fiber-enhanced r-PET engineering plastic and production method thereof
  • Hybrid fiber-enhanced r-PET engineering plastic and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A method for preparing hybrid fiber reinforced r-PET engineering plastics, comprising: 30 parts of r-PET (recycled polyethylene terephthalate) slices, 40 parts of PBT (polybutylene terephthalate) pellets 20 parts, 20 parts of hybrid fiber (carbon fiber: glass fiber = 1:1), 15 parts of calcium silicate, 15 parts of silicone oil, 0.5 part of silane coupling agent (KH-550), 0.2 part of pyromellitic anhydride (PMDA), Composed of 0.4 part of antioxidant (1010) and 0.5 part of glycidyl methacrylate.

[0034] (1) Dry 30 r-PET slices at 110°C to 120°C for 12 hours, control the water content below 0.1%, and set aside;

[0035] (2) Dry 40 parts of PBT pellets at 110°C to 120°C for 8 hours, control the water content below 0.3%, and set aside;

[0036] (3) Dry 10 parts of chopped carbon fiber and 10 parts of chopped glass fiber at 100°C to 150°C for 6 hours, and set aside;

[0037] (4) Shrink 15 parts of calcium silicate, 15 parts of silicone oil, 0.5 parts of silane coupling age...

Embodiment 2

[0044] A method for preparing hybrid fiber reinforced r-PET engineering plastics, comprising: 40 parts of r-PET (recycled polyethylene terephthalate) slices, 30 parts of PBT (polybutylene terephthalate) pellets Parts, 25 parts of hybrid fiber (carbon fiber: glass fiber = 3:2), 10 parts of calcium silicate, 8 parts of silicone oil, 2 parts of silane coupling agent (KH-550), 0.5 parts of pyromellitic anhydride (PMDA), Composed of 0.5 parts of antioxidant (1010) and 1 part of glycidyl methacrylate.

[0045] (1) Dry 40 r-PET slices at 110°C to 120°C for 12 hours, control the water content below 0.1%, and set aside;

[0046] (2) Dry 30 parts of PBT pellets at 110°C to 120°C for 8 hours, control the water content below 0.3%, and set aside;

[0047] (3) Dry 15 parts of chopped carbon fibers and 10 parts of chopped glass fibers at 100° C. to 150° C. for 6 hours, and set aside;

[0048] (4) Shrink 10 parts of calcium silicate, 8 parts of silicone oil, 2 parts of silane coupling agent...

Embodiment 3

[0055] A method for preparing hybrid fiber reinforced r-PET engineering plastics, comprising: 50 pieces of r-PET (recycled polyethylene terephthalate) slices, 16 pieces of PBT (polybutylene terephthalate) pellets 30 parts, hybrid fiber 30 parts (carbon fiber: glass fiber = 2: 1), calcium silicate 5 parts, silicone oil 5 parts, silane coupling agent (KH-550) 3 parts, pyromellitic anhydride (PMDA) 1 part, Composed of 1.2 parts of antioxidant (1010) and 2 parts of glycidyl methacrylate.

[0056] (1) Dry 50 copies of r-PET slices at 110°C-120°C for 12 hours, control the water content below 0.1%, and set aside;

[0057] (2) Dry 16 parts of PBT pellets at 110°C to 120°C for 8 hours, control the water content below 0.3%, and set aside;

[0058] (3) Dry 20 parts of chopped carbon fiber and 10 parts of chopped glass fiber at 100° C. to 150° C. for 6 hours, and set aside;

[0059] (4) Shrink 5 parts of calcium silicate, 5 parts of silicone oil, 3 parts of silane coupling agent (KH-550...

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Abstract

The invention discloses hybrid fiber-enhanced r-PET engineering plastic and a production method thereof. The hybrid fiber-enhanced r-PET engineering plastic comprises the following components in partsby weight: 30-50 parts of recovered polyethylene terephthalate, 16-40 parts of polybutylene terephthalate, 20-30 parts of hybrid fibers, 5-15 parts of calcium silicate, 5-15 parts of silicone oil, 0.5-3 parts of a coupling agent, 0.2-1 part of a chain extender, 0.4-1.2 parts of an antioxidant and 0.5-2 parts of a compatilizer. The hybrid fiber-enhanced r-PET engineering plastic has the beneficialeffects that the phenomenon of floating fibers is obviously improved, and the tenacity is good; the product is high in flame retardant efficiency, and has an obvious smoke suppression effect; by adding an appropriate amount of the hybrid fibers, the various mechanical performance of the product is greatly boosted; by adopting a plastic alloy modification method, the high-performance material is obtained, and the performance of a single plastic material is improved and increased; and reasonable resource utilization and cost reduction are achieved.

Description

technical field [0001] The invention relates to the field of polymer composite materials, in particular to a hybrid fiber reinforced r-PET engineering plastic and a preparation method thereof. Background technique [0002] Hybrid fiber-reinforced resin-based composites refer to composites with two or more reinforcing fibers in the same matrix. According to the distribution of hybrid fibers in the resin matrix, it is mainly divided into interlayer hybrid, intralayer hybrid and sandwich hybrid. Hybrid composite materials are often required for high strength, low quality, and low cost, and are widely used in daily life. Carbon fiber not only has the inherent intrinsic characteristics of carbon materials, but also has very high strength, good processability, and excellent corrosion resistance. It has been widely used in various fields of military and civilian industries. Glass fiber has a lower modulus and higher strain bearing capacity, and the cost is much lower than that of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L83/04C08K13/06C08K9/06C08K7/06C08K7/14C08J5/06
CPCC08J5/06C08J2367/02C08J2467/02C08J2483/04
Inventor 陈庆华刘懿德李红周颜品萍陈嘉炼罗富彬
Owner FUJIAN NORMAL UNIV
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