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Oiling method for large tow PAN (Polyacrylonitrile)-based carbon fiber precursors

A technology of carbon fiber precursors and large tows, applied in the direction of fiber type, fiber treatment, fiber chemical characteristics, etc., can solve the problems of poor antistatic property and low full winding rate, and achieve the goal of improving full winding rate and antistatic property. Effect

Active Publication Date: 2013-05-29
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is that in the prior art, the oil agent for carbon fiber precursors has poor antistatic property, and it is easy to cause the problem of low full volume rate. A new oiling method for large tow PAN-based carbon fiber precursors is provided , this oiling method has the advantages of good antistatic performance and high full volume rate during use

Method used

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  • Oiling method for large tow PAN (Polyacrylonitrile)-based carbon fiber precursors
  • Oiling method for large tow PAN (Polyacrylonitrile)-based carbon fiber precursors
  • Oiling method for large tow PAN (Polyacrylonitrile)-based carbon fiber precursors

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Embodiment 1～10

[0028] In Example 1, the emulsifier adopts polyoxyethylene laurate surfactant; in Example 2, the emulsifier adopts nonylphenol polyoxyethylene ether surfactant; in Examples 3-10, the emulsifier adopts Fatty alcohol polyoxyethylene ether surfactant.

[0029] The specific components of each embodiment are shown in Table 1, and the content of each component is shown in Table 2.

[0030] Evaluation of antistatic properties. Using the YG321 fiber specific resistance meter produced by Changzhou No. 2 Textile Machinery Factory Co., Ltd., using 36K PAN-based carbon fiber precursors with an oil content of 1% by weight, the specific resistance of the fiber is measured by the method of GB / T14342-93. The evaluation results are shown in table 3.

[0031] The spinnability of the PAN-based carbon fiber precursor is expressed by the full volume rate. The test condition of the full volume rate is to use a 500-ton / year PAN-based carbon fiber precursor production evaluation device, use a 36K ...

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Abstract

The invention relates to an oiling method for large tow PAN (Polyacrylonitrile)-based carbon fiber precursors, which mainly aims at solving the problem of an oiling method in the prior art that an oiling agent for carbon fiber precursors is poor in antistatic property, and thus the possibility of low full-package rate is high. The technical scheme adopted for solving the problem well is that the densified PAN-based carbon fiber precursors with the tow more than 24K are dipped and oiled, wherein an oiling agent is a mixture of V and W at the mixed weight ratio of 3:(1-3); the V comprises the following effective ingredients in parts by weight: 5 to 20 parts of amino modified polydimethylsiloxane A, 40 to 60 parts of amino modified polydimethylsiloxane B, 10 to 30 parts of polyether modified polydimethylsiloxane, and 5 to 20 parts of an emulsifying agent; and the W is an epoxy adduct of an amide compound which is obtained from reaction of diethylenetriamine and stearic acid. The oiling method can be applied to industrial production of the large tow PAN-based carbon fiber precursors.

Description

technical field [0001] The invention relates to an oiling method for large tow PAN-based carbon fiber precursors. Background technique [0002] As the reinforcing fiber of a new generation of composite materials, carbon fiber is widely used in aerospace, aviation, automobile, construction, and light industry due to its excellent performance. Large-tow polyacrylonitrile-based carbon fiber (hereinafter referred to as large-tow PAN-based carbon fiber) is one of many carbon fibers with excellent performance, and is a key material required for strategic missiles, satellites, aerospace vehicles, and large aircraft. With the rapid development of elevated highways, the demand for large tow (greater than 24K) PAN-based carbon fibers has been rapidly increased. [0003] Industrially, PAN-based carbon fibers are prepared by the following procedures: one-step or two-step spinning of PAN polymers to obtain carbon fiber precursors; pre-oxidation of precursors in an oxidative atmosphere a...

Claims

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Application Information

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IPC IPC(8): D06M15/643D06M15/647D06M13/402C07C233/36C07C231/12D06M101/28D01F9/12
Inventor 唐泓畅延青施冲
Owner CHINA PETROLEUM & CHEM CORP
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