CN107556615A - A kind of preparation method of hollow foaming regenerated plastics sound absorption particle - Google Patents
A kind of preparation method of hollow foaming regenerated plastics sound absorption particle Download PDFInfo
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- CN107556615A CN107556615A CN201710815448.2A CN201710815448A CN107556615A CN 107556615 A CN107556615 A CN 107556615A CN 201710815448 A CN201710815448 A CN 201710815448A CN 107556615 A CN107556615 A CN 107556615A
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Abstract
The invention discloses a kind of preparation method of hollow foaming regenerated plastics sound absorption particle, the present invention is prepared for a kind of polymer matrix foam particle using hollow glass microballoon as core, with cleaning, crush, except the waste and old thermoplastic after magnetic and thermoplastic polyester compounding are used as matrix polymer, then in tackifier, it is blended and is granulated with hollow glass microballoon in the presence of the compositions such as calcium stearate, compound particle is foamed again, product is obtained after drying process, hollow microsphere has higher load capacity in the expanded material, modified polymer substrate has good fixation to hollow microsphere, foam of polymers uniformly coats around hollow microsphere, finally obtain expanded particle and have good intensity and sqouynd absorption lowering noise performance concurrently, and using simple, direct hot pressing is plastic during use, it is a kind of sound-absorbing material with broad prospect of application.
Description
Technical field
The present invention relates to Advances in Sound Absorption Polymers technical field, more particularly to a kind of hollow foaming regenerated plastics sound absorption particle
Preparation method.
Background technology
Train is a kind of common vehicles, and in-car noise is very huge during used during taking train, and in-car noise is main
Noise source and vibration source outside car room, it is then directly incoming by compartment wallboard, door and window hole, by air-borne sound, structure
Sound and reverberation sound collectively constitute.In-car noise brings great discomfort to passenger, and noise reduction is with very heavy in compartment
The meaning wanted.
The control of noise is mainly started with terms of two, first, administered to noise source, by the big scrap build of sounding into
Sounding is small or equipment of not sounding, another aspect are exactly that route of transmission is controlled, by special material and its
A part is reflected when structure design makes the car body external noise incide car body surface, and another part is converted to when passing through car body
The energy of other forms is absorbed, and this is also a kind of current in-car most common means of noise control, passes through sound-absorbing material
Use, the especially absorption to high-frequency noise.
The content of the invention
A kind of the defects of the object of the invention is exactly to make up prior art, there is provided hollow foaming regenerated plastics sound absorption particle
Preparation method.
The present invention is achieved by the following technical solutions：
A kind of preparation method of hollow foaming regenerated plastics sound absorption particle, comprises the following steps：
（1）It will collect in waste and old thermoplastic input supersonic cleaning machine, using absolute ethyl alcohol as cleansing medium, according to 1:5-10
Solid-liquid ratio be cleaned by ultrasonic 1.5-2h after discharge, after being completely dried through crush, iron removaling processing, it is standby that powder is made；
（2）Powder is put into reactor, tackifier, calcium stearate, hollow glass microballoon is then sequentially added, is heated to 60-
80 DEG C, agitating device is opened, molten condition, extruding pelletization are heated to after being stirred 30-50min；
（3）The pellet of gained and appropriate water, foaming agent are put into autoclave, by the temperature of autoclave under conditions of stirring
Degree is increased to predetermined blowing temperature, constant temperature and pressure saturation, carries out foaming processing；
（4）Foaming discharges autoclave fast pressure relief after terminating, and gained expanded particle is sent into baking oven and produces institute after drying process
The sound absorption particle stated.
The step（1）In waste and old thermoplastic be PP, PE, EVA, PS in one kind with thermoplastic polyester according to
10:1-5 weight ratio is formulated.
Described thermoplastic polyester is PET, PBT or PCT.
The step（2）In tackifier be Petropols, rosin tackifying resin or corresponding modified tacky resin.
The step（2）In hollow glass microballoon median particle size range be 150-225 μm.
The step（2）Middle powder, tackifying resin, calcium stearate, the weight ratio of hollow glass microballoon are 100:（5-10）:
1:（50-80）.
The step（3）In foaming agent for butane, pentane, HCFC-134a, HFC-245fa, HFC-152a and HFC-
One kind in 1234ze.
The step（3）In blowing temperature be 65-108 DEG C, saturation pressure 1.45MPa-3.5MPa, saturation time be
2-5h。
The step（4）In drying temperature be 45-85 DEG C, drying time 1-15h.
The present invention is prepared for a kind of polymer matrix foam particle using hollow glass microballoon as core, to clean, crush, except magnetic
Rear waste and old thermoplastic is used as matrix polymer with thermoplastic polyester compounding, then tackifier, calcium stearate etc. into
It is blended and is granulated with hollow glass microballoon in the presence of point, compound particle is foamed, product is obtained after drying process again, the foaming
Hollow microsphere has higher load capacity in material, and modified polymer substrate has good fixation to hollow microsphere,
Foam of polymers uniformly coats around hollow microsphere, finally obtains expanded particle and has good intensity and sqouynd absorption lowering noise concurrently
Can, and using simple, direct hot pressing is plastic during use, is a kind of sound-absorbing material with broad prospect of application.
Embodiment
A kind of preparation method of hollow foaming regenerated plastics sound absorption particle, comprises the following steps：
（1）Waste PP particle will be collected with thermoplasticity PBT particles according to 10:1 weight is than putting into supersonic cleaning machine, with anhydrous
Ethanol is as cleansing medium, according to 1:5 solid-liquid ratio discharges after being cleaned by ultrasonic 1.5h, is handled after being completely dried through crushing, iron removaling,
It is standby that powder is made；
（2）Powder is put into reactor, then sequentially adds rosin tackifying resin, calcium stearate, hollow glass microballoon, is heated
To 60 DEG C, agitating device is opened, molten condition, extruding pelletization are heated to after being stirred 30min；
（3）The pellet of gained and appropriate water, butane are put into autoclave, by the temperature of autoclave under conditions of stirring
Predetermined blowing temperature is increased to, constant temperature and pressure saturation, carries out foaming processing；
（4）Foaming discharges autoclave fast pressure relief after terminating, and gained expanded particle is sent into baking oven and produces institute after drying process
The sound absorption particle stated.
Step（2）In hollow glass microballoon median particle diameter be 150 μm.
Step（2）Middle powder, rosin tackifying resin, calcium stearate, the weight ratio of hollow glass microballoon are 100:5:1:50.
Step（3）In blowing temperature be 65 DEG C, saturation pressure 1.45MPaMPa, saturation time 2h.
Step（4）In drying temperature be 45 DEG C, drying time 1h.
Claims (9)
1. a kind of preparation method of hollow foaming regenerated plastics sound absorption particle, it is characterised in that comprise the following steps：
（1）It will collect in waste and old thermoplastic input supersonic cleaning machine, using absolute ethyl alcohol as cleansing medium, according to 1:5-10
Solid-liquid ratio be cleaned by ultrasonic 1.5-2h after discharge, after being completely dried through crush, iron removaling processing, it is standby that powder is made；
（2）Powder is put into reactor, tackifier, calcium stearate, hollow glass microballoon is then sequentially added, is heated to 60-
80 DEG C, agitating device is opened, molten condition, extruding pelletization are heated to after being stirred 30-50min；
（3）The pellet of gained and appropriate water, foaming agent are put into autoclave, by the temperature of autoclave under conditions of stirring
Degree is increased to predetermined blowing temperature, constant temperature and pressure saturation, carries out foaming processing；
（4）Foaming discharges autoclave fast pressure relief after terminating, and gained expanded particle is sent into baking oven and produces institute after drying process
The sound absorption particle stated.
2. the preparation method of a kind of hollow foaming regenerated plastics sound absorption particle as claimed in claim 1, it is characterised in that described
Step（1）In waste and old thermoplastic be PP, PE, EVA, PS in one kind with thermoplastic polyester according to 10:1-5 weight ratio
It is formulated.
3. the preparation method of a kind of hollow foaming regenerated plastics sound absorption particle as claimed in claim 2, it is characterised in that described
Thermoplastic polyester be PET, PBT or PCT.
4. the preparation method of a kind of hollow foaming regenerated plastics sound absorption particle as claimed in claim 1, it is characterised in that described
Step（2）In tackifier be Petropols, rosin tackifying resin or corresponding modified tacky resin.
5. the preparation method of a kind of hollow foaming regenerated plastics sound absorption particle as claimed in claim 1, it is characterised in that described
Step（2）In hollow glass microballoon median particle size range be 150-225 μm.
6. the preparation method of a kind of hollow foaming regenerated plastics sound absorption particle as claimed in claim 1, it is characterised in that described
Step（2）Middle powder, tackifying resin, calcium stearate, the weight ratio of hollow glass microballoon are 100:（5-10）:1:（50-80）.
7. the preparation method of a kind of hollow foaming regenerated plastics sound absorption particle as claimed in claim 1, it is characterised in that described
Step（3）In foaming agent be butane, pentane, one in HCFC-134a, HFC-245fa, HFC-152a and HFC-1234ze
Kind.
8. the preparation method of a kind of hollow foaming regenerated plastics sound absorption particle as claimed in claim 1, it is characterised in that described
Step（3）In blowing temperature be 65-108 DEG C, saturation pressure 1.45MPa-3.5MPa, saturation time 2-5h.
9. the preparation method of a kind of hollow foaming regenerated plastics sound absorption particle as claimed in claim 1, it is characterised in that described
Step（4）In drying temperature be 45-85 DEG C, drying time 1-15h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710815448.2A CN107556615A (en) | 2017-09-12 | 2017-09-12 | A kind of preparation method of hollow foaming regenerated plastics sound absorption particle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710815448.2A CN107556615A (en) | 2017-09-12 | 2017-09-12 | A kind of preparation method of hollow foaming regenerated plastics sound absorption particle |
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| CN201710815448.2A Pending CN107556615A (en) | 2017-09-12 | 2017-09-12 | A kind of preparation method of hollow foaming regenerated plastics sound absorption particle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108841066A (en) * | 2018-04-19 | 2018-11-20 | 安徽华远节水灌溉器材有限公司 | A kind of modified waste polyethylene with good impact strength |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103903608A (en) * | 2012-12-27 | 2014-07-02 | 浙江艾迪雅科技股份有限公司 | Efficient sound insulation material and manufacturing method thereof |
| CN105710994A (en) * | 2016-03-08 | 2016-06-29 | 马东欣 | Reusing method of waste plastics |
-
2017
- 2017-09-12 CN CN201710815448.2A patent/CN107556615A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103903608A (en) * | 2012-12-27 | 2014-07-02 | 浙江艾迪雅科技股份有限公司 | Efficient sound insulation material and manufacturing method thereof |
| CN105710994A (en) * | 2016-03-08 | 2016-06-29 | 马东欣 | Reusing method of waste plastics |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108841066A (en) * | 2018-04-19 | 2018-11-20 | 安徽华远节水灌溉器材有限公司 | A kind of modified waste polyethylene with good impact strength |
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Application publication date: 20180109 |