CN105860379B - A kind of preparation method with negative poisson's ratio elastomeric material - Google Patents
A kind of preparation method with negative poisson's ratio elastomeric material Download PDFInfo
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- CN105860379B CN105860379B CN201610131434.4A CN201610131434A CN105860379B CN 105860379 B CN105860379 B CN 105860379B CN 201610131434 A CN201610131434 A CN 201610131434A CN 105860379 B CN105860379 B CN 105860379B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/18—Homopolymers or copolymers or tetrafluoroethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/068—Ultra high molecular weight polyethylene
Abstract
The present invention relates to a kind of preparation method for having and bearing Poisson characteristics material, claim 80 100 parts of powder polytetrafluoroethylene (PTFE), 5 40 portions of ultra-high molecular weight polyethylenes and 5 20 parts of paddle dryers water removals；Mixed, plus 10 20 parts of processing aids, it is well mixed, obtains mixture of viscous form；Add extruder, extrusion molding club；The thick sheet materials of 1.50mm are made in two roll calender；Dry 12h respectively in 100 DEG C, 200 DEG C of environment, remove the auxiliary agent of residual；The product of extrusion is introduced into high temperature draw-gear, stretching and thermal finalization, draw ratio 10 30 in 150 DEG C of environment；Pulled out from high temperature draw-gear, cool to normal temperature, you can there must be negative poisson's ratio elastomeric material.Use the material for preparing of the present invention for elastomeric material, the elastomeric material has negative poisson's ratio characteristic, and matter is soft, and shore hardness is 40A~75A, and hardness is moderate, suitably industrially, in engineering apply.
Description
Technical field
The invention belongs to vibration and noise reducing Material Field, and in particular to a kind of preparation side with negative poisson's ratio elastomeric material
Method.
Background technology
Negative poisson's ratio material has very peculiar and excellent performance.The tension masterpiece used time perpendicular to draw direction horizontal stroke
Volumetric expansion occurs for section, and volume contraction occurs for direction when acting on that is stressed, and negative poisson's ratio material is acted in power by bending
Convex appearance supports the sharp interface of external force in the middle part of material afterwards.Negative poisson's ratio material has good stress dispersion effect simultaneously,
Extremely low bulk modulus and high modulus of shearing is presented.
Negative poisson's ratio material has a good application prospect, and can be used on traffic route facility and commodity, such as
The guard rail made of negative poisson's ratio material material when by automobile crash can outwards expand, and reduce accident rate.With negative
The bottle stopper that Poisson ratio material makes can easily withdrawing, but with good sealing property.What negative poisson's ratio material made
Mattress can uniformly be distributed human pressure, it is to avoid skeleton is deformed upon.In addition negative poisson's ratio material is also largely used in
Military industry field makes muffler, flak jackets etc..
There is kind and be limited in traditional natural negative poisson's ratio material, processing difficulties, it is difficult to the defect such as industrialization, therefore attempt
Negative poisson's ratio material is made with the method for modification, synthesis.Negative poisson's ratio material artificial synthesized at present has polyurethane, poly- third
Alkene, polythene material, but the material fragility of these negative poisson's ratio characteristics is big, it is impossible to industrially apply.
The content of the invention
The purpose of the present invention is to be directed to above-mentioned present situation, it is desirable to provide a kind of convenient to take, and low the having of efficiency high, cost is born
Moor the preparation method of Poisson characteristics material.
The embodiment of the object of the invention is, a kind of preparation method with negative poisson's ratio elastomeric material, and specific steps are such as
Under：
1) according to composition weight than claiming 80-100 parts of powder polytetrafluoroethylene (PTFE), 5-40 parts of ultra-high molecular weight polyethylenes, 5-20
Part filler；Then powder polytetrafluoroethylene (PTFE), ultra-high molecular weight polyethylene and filler are placed to 24 ± 1h in 35 DEG C of environment to do
Dry water removal；
The filler is the one or several kinds in kaolin, diatomite, montmorillonite；
2) by through step 1) dry powder polytetrafluoroethylene (PTFE), ultra-high molecular weight polyethylene and filler mixed, then
10-20 parts of processing aids are added, is well mixed, obtains mixture of viscous form；
The processing aid is gasoline or dimethylbenzene；
3) by step 2) gained mixture of viscous form addition plunger piston extrusion machine, the bar-shaped product of extrusion molding；, then double
The sheet material of 1.50mm thickness is made in roll calendar；Dried at 100 DEG C in 12h, 200 DEG C of environment and dry 12h；
4) will be through step 3) extrusion, the product that dried be introduced into high temperature draw-gear, carries out stretching in 150 DEG C of environment
And thermal finalization, draw ratio is 10-30；
5) treat through step 4) material of stretch processing pulls out from high temperature draw-gear, slowly cools to normal temperature, i.e.,
It can obtain with negative poisson's ratio elastomeric material.
Use material prepared by the present invention for elastomeric material, the elastomeric material has negative poisson's ratio characteristic, and matter is soft,
Shore hardness is 40A~75A, and hardness is moderate, suitably industrially, in engineering is applied.
Embodiment
The present invention claims 80-100 parts of powder polytetrafluoroethylene (PTFE), 5-40 portions of ultra-high molecular weight polyethylenes and 5-20 parts of paddle dryers
Water removal；Mixed, plus 10-20 parts of processing aids, it is well mixed, obtains mixture of viscous form；Add extruder, extrusion molding rod
Shape thing；The thick sheet materials of 1.50mm are made in two roll calender；Dry 12h respectively in 100 DEG C, 200 DEG C of environment, remove residual
Auxiliary agent；The product of extrusion is introduced into high temperature draw-gear, and stretching and thermal finalization, draw ratio 10- are carried out in 150 DEG C of environment
30；Pulled out from high temperature draw-gear, slowly cool to normal temperature, you can obtained with negative poisson's ratio elastomeric material.
The molecular weight of ultra-high molecular weight polyethylene is 2,000,000-400 ten thousand.
The present invention is described in detail with specific embodiment below.
Embodiment 1
1) according to composition weight than claiming 80 parts of powder polytetrafluoroethylene (PTFE), 5 parts of ultra-high molecular weight polyethylenes, 20 parts of kaolin；
Then powder polytetrafluoroethylene (PTFE), carbonyl iron dust and filler are placed to 24 ± 1h in 35 DEG C of environment and dries water removal；
2) by through step 1) dry powder polytetrafluoroethylene (PTFE), carbonyl iron dust and kaolin mixed, then add 20
Part gasoline, is well mixed, obtains mixture of viscous form；
3) by step 2) gained mixture of viscous form addition plunger piston extrusion machine, the bar-shaped product of extrusion molding；, then double
The sheet material of 1.50mm thickness is made in roll calendar；Dried at 100 DEG C in 12h, 200 DEG C of environment and dry 12h, to remove residual
Auxiliary agent；
4) will be through step 3) product of extrusion is introduced into high temperature draw-gear, stretching is carried out in 150 DEG C of environment and hot
Sizing, draw ratio is 20.
5) treat through step 4) material of stretch processing pulls out from high temperature draw-gear, slowly cools to normal temperature, i.e.,
The elastomeric material with negative poisson's ratio characteristic can be obtained.
Its negative poisson's ratio is -10, and shore hardness is 50A.
Embodiment 2, be the same as Example 1, unlike,
1) 80 parts of powder polytetrafluoroethylene (PTFE), 5 parts of ultra-high molecular weight polyethylenes, 20 parts of kaolin are claimed by weight；
2) by through step 1) dry powder polytetrafluoroethylene (PTFE), ultra-high molecular weight polyethylene and kaolin mixed, so
20 parts of gasoline are added afterwards, are well mixed, are obtained mixture of viscous form；
4) will be through step 3) product of extrusion is introduced into high temperature draw-gear, stretching is carried out in 150 DEG C of environment and hot
Sizing, draw ratio is 30.
5) treat through step 4) material of stretch processing pulls out from high temperature service, slowly cools to normal temperature, you can
To the magnetorheological materials of the characteristic with negative poisson's ratio.Its negative poisson's ratio is -6.38, and shore hardness is 40A.
Embodiment 3, be the same as Example 1, unlike,
1) 80 parts of powder polytetrafluoroethylene (PTFE), 40 parts of ultra-high molecular weight polyethylenes, 20 parts of kaolin are claimed by weight；
2) by through step 1) dry powder polytetrafluoroethylene (PTFE), ultra-high molecular weight polyethylene and kaolin mixed, so
20 parts of gasoline are added afterwards, are well mixed, are obtained mixture of viscous form；
4) will be through step 3) extrusion, the product that dried be introduced into high temperature draw-gear, carries out stretching in 150 DEG C of environment
And thermal finalization, draw ratio is 10.
5) treat through step 4) material of stretch processing pulls out from high temperature service, slowly cools to normal temperature, you can
To the elastomeric material with negative poisson's ratio characteristic.Its negative poisson's ratio is -1.57, and shore hardness is 75A.
Embodiment 4, be the same as Example 1, unlike,
1) 80 parts of powder polytetrafluoroethylene (PTFE), 5 parts of ultra-high molecular weight polyethylenes, 10 parts of kaolin, 10 are claimed by weight
Part montmorillonite；
2) will be through step 1) dry powder polytetrafluoroethylene (PTFE), ultra-high molecular weight polyethylene and kaolin, montmorillonite carry out
Mixing, then adds 20 parts of gasoline, is well mixed, obtains mixture of viscous form；
4) will be through step 3) extrusion, the product that dried be introduced into high temperature draw-gear, carries out stretching in 150 DEG C of environment
And thermal finalization, draw ratio is 10.
5) treat through step 4) material of stretch processing pulls out from high temperature service, slowly cools to normal temperature, you can
To the elastomeric material with negative poisson's ratio characteristic.Its negative poisson's ratio is -4.5, and shore hardness is 60A.
Embodiment 5, be the same as Example 1, unlike,
1) 80 parts of powder polytetrafluoroethylene (PTFE), 5 parts of ultra-high molecular weight polyethylenes, 20 parts of kaolin are claimed by weight；
2) by through step 1) dry powder polytetrafluoroethylene (PTFE), ultra-high molecular weight polyethylene and kaolin mixed, so
20 parts of dimethylbenzene are added afterwards, are well mixed, are obtained mixture of viscous form；
4) will be through step 3) extrusion, the product that dried be introduced into high temperature draw-gear, carries out stretching in 150 DEG C of environment
And thermal finalization, draw ratio is 10.
5) treat through step 4) material of stretch processing pulls out from high temperature service, slowly cools to normal temperature, you can
To the elastomeric material with negative poisson's ratio characteristic.Its negative poisson's ratio is -9.8, and shore hardness is 62A.
Embodiment 6, be the same as Example 1, unlike,
1) 90 parts of powder polytetrafluoroethylene (PTFE), 15 parts of ultra-high molecular weight polyethylenes, 5 parts of diatomite, 5 parts of illiteracies are claimed by weight
De- soil；
2) will be through step 1) dry powder polytetrafluoroethylene (PTFE), ultra-high molecular weight polyethylene and diatomite, montmorillonite carry out
Mixing, then adds 10 parts of gasoline, is well mixed, obtains mixture of viscous form；
4) will be through step 3) extrusion, the product that dried be introduced into high temperature draw-gear, carries out stretching in 150 DEG C of environment
And thermal finalization, draw ratio is 10.
5) treat through step 4) material of stretch processing pulls out from high temperature service, slowly cools to normal temperature, you can
To the elastomeric material with negative poisson's ratio characteristic, its negative poisson's ratio is -5.9, and shore hardness is 70A.
Embodiment 7, be the same as Example 1, unlike,
1) 100 parts by weight powder polytetrafluoroethylene (PTFE), 25 parts of ultra-high molecular weight polyethylenes, 15 parts of diatomite；
2) by through step 1) dry powder polytetrafluoroethylene (PTFE), ultra-high molecular weight polyethylene and diatomite mixed, so
15 parts of dimethylbenzene are added afterwards, are well mixed, are obtained mixture of viscous form；
4) will be through step 3) extrusion, the product that dried be introduced into high temperature draw-gear, carries out stretching in 150 DEG C of environment
And thermal finalization, draw ratio is 20.
5) treat through step 4) material of stretch processing pulls out from high temperature service, slowly cools to normal temperature, you can
To the elastomeric material with negative poisson's ratio characteristic, its negative poisson's ratio is -8.1, and shore hardness is 75A.
Claims (2)
1. a kind of preparation method with negative poisson's ratio elastomeric material, it is characterised in that：Comprise the following steps that：
1) according to composition weight than claim 80-100 parts of powder polytetrafluoroethylene (PTFE), 5-40 portions of ultra-high molecular weight polyethylenes, 5-20 parts fill out
Material；Then powder polytetrafluoroethylene (PTFE), ultra-high molecular weight polyethylene and filler are placed to 24 ± 1h dryings in 35 DEG C of environment to remove
Water；
The filler is the one or several kinds in kaolin, diatomite, montmorillonite；
2) by through step 1) dry powder polytetrafluoroethylene (PTFE), ultra-high molecular weight polyethylene and filler mixed, then add
10-20 parts of processing aids, are well mixed, obtain mixture of viscous form；
The processing aid is gasoline or dimethylbenzene；
3) by step 2) gained mixture of viscous form addition plunger piston extrusion machine, the bar-shaped product of extrusion molding；Then in double roller pressure
Prolong the sheet material that 1.50mm thickness is made in machine；Dried at 100 DEG C in 12h, 200 DEG C of environment and dry 12h；
4) will be through step 3) extrusion, the product that dried be introduced into high temperature draw-gear, stretching is carried out in 150 DEG C of environment and hot
Sizing, draw ratio is 10-30；
5) by through step 4) material of stretch processing pulls out from high temperature draw-gear, slowly cools to normal temperature, you can
To with negative poisson's ratio elastomeric material.
2. a kind of preparation method with negative poisson's ratio elastomeric material according to claim 1, it is characterised in that：Superelevation point
The molecular weight of sub- weight northylen is 2,000,000-400 ten thousand.
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| CN108284595A (en) * | 2018-01-15 | 2018-07-17 | 四川大学 | The method that 3d prints negative poisson's ratio structural damping sole, insole |
| CN109787502B (en) * | 2019-01-14 | 2020-10-20 | 南京航空航天大学 | Electroactive polymers based on negative poisson's ratio dielectric elastomers |
Citations (5)
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|---|---|---|---|---|
| EP0110038A2 (en) * | 1982-09-29 | 1984-06-13 | Vulkor, Incorporated | Polymer interdispersions, related compositions and method of making same |
| CN1205018A (en) * | 1996-09-19 | 1999-01-13 | W·L·戈尔有限公司 | Co-continuous blend of fluoropolymer and thermaplastic and method |
| CN1986621A (en) * | 2005-12-21 | 2007-06-27 | 中国科学院化学研究所 | Negative poisson's ratio material and its preparing method and use |
| CN103102627A (en) * | 2013-01-23 | 2013-05-15 | 广东生益科技股份有限公司 | PTFE (polytetrafluoroethylene) base material with high filler content and preparation and application thereof |
| CN104530537A (en) * | 2015-01-08 | 2015-04-22 | 大连塑料研究所有限公司 | Manufacturing method and forming device of high-viscosity resin boards |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20160115367A1 (en) * | 2013-05-08 | 2016-04-28 | Schlumberger Technology Corporation | Ultrahigh Molecular Weight Polyethylene Reinforced Rubber Compositions For Subterranean Applications |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0110038A2 (en) * | 1982-09-29 | 1984-06-13 | Vulkor, Incorporated | Polymer interdispersions, related compositions and method of making same |
| CN1205018A (en) * | 1996-09-19 | 1999-01-13 | W·L·戈尔有限公司 | Co-continuous blend of fluoropolymer and thermaplastic and method |
| CN1986621A (en) * | 2005-12-21 | 2007-06-27 | 中国科学院化学研究所 | Negative poisson's ratio material and its preparing method and use |
| CN103102627A (en) * | 2013-01-23 | 2013-05-15 | 广东生益科技股份有限公司 | PTFE (polytetrafluoroethylene) base material with high filler content and preparation and application thereof |
| CN104530537A (en) * | 2015-01-08 | 2015-04-22 | 大连塑料研究所有限公司 | Manufacturing method and forming device of high-viscosity resin boards |
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