阅读说明：本技术 一种碳纤维包覆钛酸盐材料的制备方法 (A kind of preparation method of carbon fiber cladding titanate material ) 是由 姚余江 袁豪 姚文俊 于 2018-05-21 设计创作，主要内容包括：本发明提供了一种碳纤维包覆钛酸盐材料及其制备方法,其最显著的特征是具有很高的导热率。将纳米碳纤维、酚醛树脂和钛酸盐置于打浆灌中充分混合,再将混合物烘干,去除溶剂即得到碳纤维包覆钛酸盐材料。(The present invention provides a kind of carbon fiber cladding titanate materials and preparation method thereof, and most significant feature is that have very high thermal conductivity.Carbon nano-fiber, phenolic resin and titanate are placed in making beating and are sufficiently mixed, then mixture is dried, removal solvent obtains carbon fiber cladding titanate material.)

1. a kind of preparation method of carbon fiber cladding titanate material, wherein including (weight ratio) 80 ~ 88% titanate, 1-10% is received Rice carbon fiber, phenol resin solution: 1-10%.

2. a kind of carbon fiber according to claim 1 coats titanate material, it is characterised in that: the carbon nano-fiber is The carbon fiber handled in inert gas through carbonization and high temperature graphitization by organic fiber or low molecular hydrocarbons gas raw material, directly Diameter is 2 nanometers -500 nanometers, draw ratio 10-100；The titanate is potassium hexatitanate, magnesium titanate, one kind of lithium titanate potassium Or it is a variety of, pattern is non-crystal whisker-shaped (draw ratio is less than or equal to 3).

3. a kind of preparation method of carbon fiber cladding titanate advanced composite material (ACM) of any of claims 1 or 2, by walking as follows It is rapid to obtain:

(1) by titanate, carbon nano-fiber, phenol resin solution, which is placed in, to be beaten in tank, is sufficiently mixed；

Phenol resin solution is made of phenolic resin and solvent, wherein the ratio of phenolic resin and solvent is 5:100-10: 100；

(2) impregnation -30 minutes 10 minutes obtain phenolic resin carbon fiber mixture；

(3) mixture is dried 2-10 hours under 120-170 degree, removes solvent to get to carbon fiber and coats titanate material.

4. phenolic resin ethanol solution described in claim 3, wherein the ratio of phenolic resin and solvent is 5:100-10: 100。

Technical field

The invention belongs to field of compound material, and in particular to a kind of preparation method of carbon fiber cladding titanate material is answered For friction material field.

Background technique

Titanate product category is various, can be divided into alkali metal titanate, titanates of alkali-earth metals, rare earth metal by its composition Titanate etc. has very brilliant physics, chemistry and optical property, occupies critical positions in contemporary materials science field, Especially high-performance composite materials.The pattern of titanate includes sheet, crystal whisker-shaped, graininess etc. [1].

Alkali metal titanate is a kind of important inorganic non-metallic material, has excellent physical and chemical performance, as rubbing The friction control agent for wiping material uses, the easily carcinogenic asbestos material in alternative original NAO formula.

Washington state clearly proposes that the content to the year two thousand twenty metallic copper in brake block is lower than 5wt%, low by 2025 In 0.5wt% [2].Copper plays the effects of stable coefficient of friction in friction material, this, which is primarily due to copper, can form transfer membrane It is caused.Likewise, it is known that the hardness of titanate material can also form transfer membrane, then titanate material 4.0 Usually heat-barrier material, without thermal conductivity.And copper plays the role of thermally conductive, heat dissipation in brake slice prescription.

Carbon fiber be it is a kind of there are many excellent performance materials, axial strength and modulus are high, high density, higher than performance, No scholar becomes, and superhigh temperature resistant under non-oxidizing atmosphere, fatigue durability is good, and between nonmetallic between metal, heat is swollen for specific heat and electric conductivity Swollen coefficient is small and has the features such as anisotropy, good corrosion resistance, X-ray transparent is good, more importantly having good Electrical and thermal conductivity performance is applied to space flight and aviation, new textile machinery, petrochemical industry, medicine instrument, automobile, machinery by general extensively The high-technology fields such as manufacture, building trade.CN107881789A discloses a kind of preparation method of highly-conductive hot carbon fiber, this hair Bright is to optimize on the basis of existing technology, so that titanate is obtained better thermal conductivity by surface cladding.

Here, we carry out titanate and carbon fiber compound, prepare a kind of Modified Titanium of carbon fiber cladding titanate Silicate material is substituted metallic copper, is found by test, and the electric conductivity performance of the titanate material by carbon fiber cladding is excellent It is different.

Summary of the invention

Technical problem: in order to overcome original titanate material cannot heat defect, the present invention provides a kind of highly-conductive hot carbons Fiber coats the preparation method of titanate to improve the athermanous disadvantage of titanate, extends its application field, such as can be used as The material for substituting copper is applied in ceramic formula.A kind of technical solution carbon fiber cladding titanate material provided by the invention, until It is few to be made (weight ratio) of the component of following weight percent number: 80 ~ 88% titanates, 1 ~ 10% carbon nano-fiber, phenolic resin Solution: 1 ~ 10%.As an improvement, the carbon fiber be by organic fiber or low molecular hydrocarbons gas raw material in inert gas through carbon The carbon fiber that change and high temperature graphitization are handled, diameter are 2 nanometers ~ 500 nanometers,；The titanate is potassium hexatitanate, metatitanic acid Potassium magnesium, lithium titanate potassium it is one or more, pattern is non-crystal whisker-shaped (draw ratio be less than or equal to 3).

As an improvement, the present invention also provides the preparation method of for example above-mentioned carbon fiber cladding titanate material, including it is as follows Step:

1) by titanate, carbon nano-fiber, phenol resin solution is placed in making beating, is sufficiently mixed.Phenol resin solution be by Phenolic resin and solvent composition, wherein the ratio of phenolic resin and solvent is 5:100 ~ 10:100.

2) impregnation 10 minutes ~ 30 minutes obtain phenolic resin carbon fiber mixture；

3) by mixture, drying 2 ~ 10 hours, removal solvent coat titanate material to get to carbon fiber under 120 ~ 170 degree；

4) solution known to the fraction described in step 3), wherein phenolic resin is 5:100 ~ 10:100 with solvent ratios；

5) solvent described in step 3) is ethyl alcohol.

Specifically, the present invention is compared with the existing technology, there is advantage following prominent:

The present invention wraps up titanate using carbon fiber, and can be effectively improved alkali metal titanate can not be thermally conductive as friction control agent It is insufficient.

Specific embodiment

Below by embodiment comparative example, technical scheme of the present invention will be further explained in detail.