阅读说明：本技术 一种聚醚醚酮多孔泡沫材料及其制备方法 (A kind of polyether-ether-ketone perforated foams and preparation method thereof ) 是由 牟建新 李澍 吴焓 陈瑞 王振洋 温丰宇 何青霞 于 2019-10-18 设计创作，主要内容包括：一种聚醚醚酮多孔泡沫材料及其制备方法,属于高分子材料制备技术领域。是将聚醚醚酮粉末、增强体填料和发泡剂在高速搅拌下混合均匀,放入模具腔中并在硫化仪上预热；再对模具腔施加压力,控制适当的发泡温度进行发泡,保持此压力,进行降温冷却；冷却到一定温度后,得到该聚醚醚酮多孔泡沫材料。本发明所述方法可通过控制发泡温度,进而调控发泡速率,并且适当提高发泡温度,可以加速发泡剂产生的气体在聚合物中扩散,减少发泡时间,提高发泡效率。本发明工艺过程简单,便于操作,加工条件温和,易于推广。(A kind of polyether-ether-ketone perforated foams and preparation method thereof, belong to field of polymer material preparing technology.It is to be uniformly mixed polyether-ether-ketone powder, reinforcement filler and foaming agent under high velocity agitation, is put into mold cavity and is preheated on vulcameter；Pressure is applied to mold cavity again, blowing temperature appropriate is controlled and foams, keeps this pressure, carries out cooling down；After being cooled to certain temperature, the polyether-ether-ketone perforated foams are obtained.The method of the invention can be by controlling blowing temperature, and then regulates and controls expansion rate, and properly increase blowing temperature, and the gas that foaming agent can be accelerated to generate is spread in the polymer, reduces foamed time, improves bubbling efficiency.Present invention process process is simple, and convenient for operation, processing conditions is mild, easy to spread.)

1. a kind of preparation method of polyether-ether-ketone perforated foams, its step are as follows:

1) polyether-ether-ketone powder, reinforcement filler and foaming agent are uniformly mixed under high velocity agitation, obtain polyether-ether-ketone mixing Object；

2) the polyether-ether-ketone mixture that step 1) obtains is put into mold cavity, then mold cavity is placed in the vulcanization of certain temperature On instrument, certain time is preheated；

3) pressure is applied to the mold cavity of step 2), controls blowing temperature appropriate, through foaming after a period of time, keeps this pressure Power carries out cooling down；

4) after being cooled to certain temperature, to obtain polyether-ether-ketone perforated foams.

2. a kind of preparation method of polyether-ether-ketone perforated foams as described in claim 1, it is characterised in that: in step 1) The polyether-ether-ketone powder is 50~1000 mesh, and melt index is 16~120g/10min, and test temperature is 400 DEG C, is carried Lotus is 5Kg.

3. a kind of preparation method of polyether-ether-ketone perforated foams as described in claim 1, it is characterised in that: in step 1) The reinforcement filler is carbon nanotube, graphite, graphene, carbon black, carbon fiber powder, boron nitride, aluminium nitride, copper powder, silver powder Or nickel powder, quality dosage are the 0~40% of polyether-ether-ketone powder.

4. a kind of preparation method of polyether-ether-ketone perforated foams as described in claim 1, it is characterised in that: in step 1) The foaming agent is hindered amine light stabilizer 3346, hindered amine light stabilizer 196 or light stabilizer 610, and quality is used Amount is the 1~20% of polyether-ether-ketone powder.

5. a kind of preparation method of polyether-ether-ketone perforated foams as described in claim 1, it is characterised in that: in step 2) The preheating temperature of the vulcameter is 350~390 DEG C, and preheating time is 5~10min.

6. a kind of preparation method of polyether-ether-ketone perforated foams as described in claim 1, it is characterised in that: in step 3) The pressure applied to mold cavity is 3~50MPa, and the heating upper plate of vulcameter and the temperature for heating lower plate are 360~410 DEG C, heating upper plate and the temperature for heating lower plate are consistent or have certain temperature difference, and the temperature difference range is at 0~30 DEG C, foamed time For 10~20min.

7. a kind of preparation method of polyether-ether-ketone perforated foams as described in claim 1, it is characterised in that: in step 4) Cooling temperature is 200 DEG C or less.

8. a kind of polyether-ether-ketone perforated foams, it is characterised in that: be the method as described in claim 1~7 any one It is prepared.

Technical field

The invention belongs to field of polymer material preparing technology, and in particular to a kind of high-performance polyether-ether-ketone porous foam material Material and preparation method thereof.

Background technique

Special engineering plastics refer to comprehensive performance is higher, long-term use temperature 150 DEG C or more, be mainly used in high-tech neck A kind of high molecular material in domain, so also referred to as high performance engineering plastics or heat-resistant engineering plastic, polyether-ether-ketone is wherein important One kind.Polyether-ether-ketone has temperature classification height, radiation hardness, chemical-resistant resistance, resistance to punching as a kind of crystalline polymer material Hit, creep resistant, good flame resistance, excellent electrical properties the advantages that, in high-speed track transportation system, low energy consumption and new-energy automobile, height The effect technical fields such as transportation technology and equipment, aerospace, electronics, information and national defence are all widely used.

Foamed material is made of rigid backbone and internal hole, since the 1940s comes out, due to having Many excellent performances, such as: specific strength height, light weight, save material, thermal insulation is good, it is low to absorb shock loading, thermal conductivity, The performances such as excellent damping performance and sound-insulating and heat-insulating are applied in household electrical appliance, material packaging, insulating materials, daily trip, movement Equipment and chemical industry etc..The polymeric foamable material of function admirable then plays an important role in national defense and military fields.For The application range of further expansion polyetheretherketonematerials materials, prepares polyether-ether-ketone foamed plastics and has a very important significance.

No matter which kind of foam process is used, required foaming product, specific mistake can just be prepared by requiring completion following steps Journey is as follows: (1) forming polymer/gas system；(2) bubble causes nucleation；(3) air bubble growth and control.This three step is poly- Close the basis of object foamed plastic processing Theory.

The foaming method of foamed product is mainly physical blowing method and chemical blowing process, and chemical blowing is sent out by the chemistry being added Infusion thermally decomposed or raw material components between chemical reaction occurs and the gas that generates, make plastic melt full of abscess, physical blowing It is to dissolve in gas or liquid in high molecule plastic, then makes the method that it is expanded or vaporization is foamed, but such method needs to use Special injection molding machine and other ancillary equipments, technical requirements are very high, are not easy to industrialize.

There are many kinds of the moulding process of foamed product, and the forming method for industrially preparing foaming plate mainly has extrusion Method, injection moulding and die pressing, but the shortcomings that extrusion molding and injection moulding is the preparation for being difficult to realize the larger foaming product of thickness.Mesh Before, industrially preparing the most common method of the biggish foaming plate of thickness is die pressing, and die pressing has following advantages: can prepare The biggish high molecule plastic foaming plate of thickness, easy to operate easy to get started, equipment cost is cheap, and can also prepare it is some its The high molecule plastic foamed material that his technique cannot achieve.

Chinese patent CN102924743A discloses a kind of preparation side of crystallinity rigid polyether ether ketone perforated foams Method uses supercritical CO₂Foaming agent has prepared polyether-ether-ketone foam, but the method device therefor is complicated, operating difficulties, to technology It is required that it is high, it is not easy to industrialize.It is compound that Chinese patent CN105367994A discloses a kind of light wear-resistant fretting map polyether-ether-ketone Material and preparation method and application prepare fretting map polyetheretherketonematerials materials, but resulting materials expansion ratio using high-temperature foaming agent Too small, material apparent density is in 1.35g/cm³More than.Chinese patent 03118818.4 discloses a kind of Microcellular Foaming by Compression Molding The method of engineering plastics has prepared the engineering plastics of micropore using die pressing and in conjunction with chemical foaming agent, but used in this method Plastic substrate is only limitted to sheet material, and also needs first to prepare foaming agent substrate, and which greatly limits the popularizations of such method.It is comprehensive On, for preparing polyether-ether-ketone perforated foams, existing method be not expansion ratio it is limited be exactly complex process.

Summary of the invention

In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a kind of polyether-ether-ketone perforated foams and its system Preparation Method.

A kind of preparation method of polyether-ether-ketone perforated foams of the present invention, its step are as follows:

1) polyether-ether-ketone powder, reinforcement filler and foaming agent are mixed under 20000~30000r/min high-speed stirred 0.5~2min obtains polyether-ether-ketone mixture；

2) the polyether-ether-ketone mixture that step 1) obtains is put into mold cavity, mold cavity is then placed in certain temperature On vulcameter, certain time is preheated；

3) pressure is applied to the mold cavity of step 2), controls blowing temperature appropriate, through foaming after a period of time, kept This pressure carries out cooling down；

4) after being cooled to certain temperature, to obtain polyether-ether-ketone perforated foams of the present invention.

Polyether-ether-ketone powder described in step 1) is 50~1000 mesh, and melt index is that 16~120g/10min (is surveyed Trying temperature is 400 DEG C, load 5Kg)；

Reinforcement filler described in step 1) includes but is not limited to carbon nanotube, graphite, graphene, carbon black, carbon fiber Powder, boron nitride, aluminium nitride, copper powder, silver powder and nickel powder etc., quality dosage are the 0~40% of polyether-ether-ketone powder；

Foaming agent described in step 1) is hindered amine light stabilizer 3346, hindered amine light stabilizer 196, light are stablized One of agent 610, quality dosage are the 1~20% of polyether-ether-ketone powder；

The preheating temperature of vulcameter described in step 2) is 350~390 DEG C, and preheating time is 5~10min；

It is 3~50MPa, heating upper plate and the heating lower plate of vulcameter to the pressure that mold cavity applies described in step 3) Temperature is 360~410 DEG C, and heating upper plate and the temperature for heating lower plate can be consistent or have certain temperature difference, and the temperature difference range is 0 ~30 DEG C, foamed time is 10~20min；

Cooling temperature is 200 DEG C or less in step 4).

The present invention has the advantage that compared with the preparation method of existing polyether-ether-ketone foamed plastics

This method can directly carry out foaming to powder, need not move through and prepare this process of polymer sheet, can also For to the plastics for being not easy to foam using extrusion molding and injection moulding.Its device therefor has heating upper plate and adds for conventional The vulcameter (HY4016 of Anhui Hua Biao detecting instrument Co., Ltd) of hot lower plate and the mold without special seal, cost of equipment Lower, cost is not high.Such method can be by controlling blowing temperature, and then regulates and controls expansion rate, and properly increases foaming temperature Degree, the gas that foaming agent can be accelerated to generate are spread in the polymer, reduce foamed time, improve bubbling efficiency.Work of the present invention Skill process is simple, and convenient for operation, processing conditions is mild, easy to spread.

Detailed description of the invention

Fig. 1: the scanning electron microscope (SEM) photograph of 1 gained polyether-ether-ketone perforated foams of embodiment；

Fig. 2: (abscissa is compressive deformation to the compressive deformation curve of 1 gained polyether-ether-ketone perforated foams of embodiment, is indulged Coordinate is compression stress)；

Fig. 1 gives the stereoscan photograph of polyether-ether-ketone perforated foams.It is found that rigid polyether from scanning electron microscope Ether ketone perforated foams have uniform porous structure, and the size in aperture is 420 μm or so.

Fig. 2 gives the compressive deformation curve of prepared polyether-ether-ketone perforated foams.When its compressive deformation is When 10%, the greatest compressive strength that foamed material is born is 9.89MPa.

Specific embodiment

Technical solution of the present invention is described further below in conjunction with specific embodiment.