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Aramid fiber composite core with environmental resistance and preparation method thereof

A technology of aramid fiber and composite core, which is applied in the direction of light-resistant fiber, fiber type, fiber treatment, etc., can solve the problems of limited composite matrix type, difficult infiltration, low reactivity, etc., and improve the anti-light aging and damp heat aging performance Effect

Pending Publication Date: 2020-12-08
福建创立佳科技有限公司 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In practical applications, due to some of its own defects, it greatly limits the field of its use and its proportion in the high-performance composite material market
For example, its molecular structure has high rigidity, close arrangement, exists almost completely in the form of crystals, has few molecular surface active functional groups, and low reactivity, etc. These deficiencies make it difficult for the fiber to infiltrate and poor interfacial bonding when it is combined with the matrix. , which greatly limits the type of composite matrix that can be used

Method used

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  • Aramid fiber composite core with environmental resistance and preparation method thereof
  • Aramid fiber composite core with environmental resistance and preparation method thereof
  • Aramid fiber composite core with environmental resistance and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0042] A method for adding a light-shielding agent to a sizing agent and a resin, preparing an aramid composite core by pultrusion, and wrapping a hydrolysis-resistant and high-temperature-resistant protective layer on its surface with a welding device, comprising the following steps:

[0043] (1) Select aramid fiber (aramid II), light shielding agent (ZnO) and wrapping layer (PEEK)

[0044] (2) Add 1% ZnO by volume to the sizing agent, and add 10% ZnO by volume to the resin.

[0045] (3) After the aramid fiber is treated with the sizing agent, it is dried, and the aramid fiber passes through the resin glue tank (length 80cm, width 20cm) and figure 1 The shown preformer 1, sieve plate 101, converging plate 102, orifice plate 103, thermoforming mold 2 (length 100cm, die opening diameter 6.5mm) and crawler tractor in the device for preparing aramid composite core shown.

[0046] (3) preheating mold, T 中 =210°C, T 前 =T 后 = 200°C.

[0047] (4) Turn on the crawler tractor and ...

Embodiment 2

[0053] A method for adding a light-shielding agent to a sizing agent and a resin, preparing an aramid composite core by pultrusion, and wrapping a hydrolysis-resistant and high-temperature-resistant protective layer on its surface with a welding device, comprising the following steps:

[0054] (1) Use aramid fiber (aramid II), light shielding agent (TiO 2 ) and coating (PEEK)

[0055] (2) Add 1% TiO by volume to the sizing agent 2 , adding 10% TiO by volume to the resin 2 .

[0056] (3) After the aramid fiber is treated with the sizing agent, it is dried, and the aramid fiber passes through the resin glue tank (length 80cm, width 20cm), preformer, heating molding mold (length 100cm, die diameter 6.5mm), Caterpillar tractor.

[0057] (4) preheating mold, T 中 =210°C, T 前 =T 后 = 200°C.

[0058] (5) Turn on the crawler tractor and set the traction speed to 100mm / min.

[0059] (6) The composite core passes through the post-curing device at a temperature of 200°C for 5 minu...

Embodiment 3

[0064] A method for adding a light-shielding agent to a sizing agent and a resin, preparing an aramid composite core by pultrusion, and wrapping a hydrolysis-resistant and high-temperature-resistant protective layer on its surface with a welding device, comprising the following steps:

[0065] (1) Select aramid fiber (aramid II), light shielding agent (ZnO) and wrapping layer (PA)

[0066] (2) Add 1% ZnO by volume to the sizing agent, and add 10% ZnO by volume to the resin.

[0067] (3) After the aramid fiber is treated with the sizing agent, it is dried, and the aramid fiber passes through the resin glue tank (length 80cm, width 20cm), preformer, heating molding mold (length 100cm, die diameter 6.5mm), Caterpillar tractor.

[0068] (4) preheating mold, T 中 =210°C, T 前 =T 后 = 200°C.

[0069] (5) Turn on the crawler tractor and set the traction speed to 100mm / min.

[0070] (6) The composite core passes through the post-curing device at a temperature of 200°C for 5 minutes...

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Abstract

The invention discloses an aramid fiber composite core with environmental resistance and a preparation method thereof, and belongs to the technical field of aramid composite core preparation. The aramid composite core comprises aramid fibers, a sizing agent anti-photoaging layer, a resin anti-photoaging layer and a hydrolysis-resistant layer. The preparation method comprises the following steps that anti-photoaging ZnO and TiO2 light shielding agents are correspondingly added into the sizing agent and resin, fibers passing through the sizing agent are dried, the fibers enter a gum dipping tankfor gum dipping, the fibers enter a curing mold after gum dipping, the fibers are pulled out and molded by a dragger, the prepared composite core is subjected to post-curing treatment and passes through deposition equipment after complete curing, the composite core surface is coated with a layer of compact hydrolysis-resistant coating layer such as PEEK or PA, and the treated aramid fiber composite core has anti-photoaging and damp-heat aging resistance.

Description

technical field [0001] The invention belongs to the technical field of preparation of aramid fiber composite cores, and in particular relates to an aramid fiber composite core with environmental resistance and a preparation method thereof. Background technique [0002] Aramid fiber is an organic fiber, which is the second generation of high-performance composite material reinforcement after carbon fiber. It has a variety of excellent properties: high longitudinal tensile strength and modulus, low density, strong heat resistance and chemical medium corrosion resistance. Excellent dielectric properties, therefore, aramid fiber is also known as "all-round fiber". Initially, its main purpose was to prepare bulletproof products. With the continuous improvement of its performance, it was gradually compounded with polymer resins, ceramics and metals to form a new generation of high-performance composite materials that are widely used in various fields today. So far, it has gradua...

Claims

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Application Information

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IPC IPC(8): D06M11/44D06M11/46D06M15/00D06M15/59D06M15/41D06M15/507B29C70/52B29C70/54D06M101/36B29K277/00
CPCD06M11/44D06M11/46D06M15/00D06M15/59D06M15/41D06M15/507B29C70/521B29C70/54D06M2101/36D06M2200/25B29K2277/10
Inventor 孔海娟曹元智刘胜春余木火徐前王景朝陈海龙
Owner 福建创立佳科技有限公司
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