CN102079868A - Method for preparing liquid crystal nylon alloy - Google Patents
Method for preparing liquid crystal nylon alloy Download PDFInfo
- Publication number
- CN102079868A CN102079868A CN2010105961045A CN201010596104A CN102079868A CN 102079868 A CN102079868 A CN 102079868A CN 2010105961045 A CN2010105961045 A CN 2010105961045A CN 201010596104 A CN201010596104 A CN 201010596104A CN 102079868 A CN102079868 A CN 102079868A
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- nylon
- oligopolymer
- preparation
- nylon alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention discloses a method for preparing a liquid crystal nylon alloy. The method comprises the following steps: grinding liquid crystal oligomer and high temperature nylon oligomer, adding in a reactive screw extruder, adding a compatilizer, reacting, performing extrusion, pelletizing and tackifying solid aggregate to ensure that the relative viscosity is 2.0-3.0. By adopting the preparation method in the invention, the dosage of liquid crystals is reduced and the cost is lowered. In addition, as the compatilizer is used in the preparation method, the prepared liquid crystal nylon alloy has good surface compatibility, heat resistance, melt liquidity and processing stability and can not corrode moulds.
Description
Technical field
The present invention relates to a kind of method for preparing the liquid crystal nylon alloy.
Background technology
Liquid crystal is a kind of good engineering plastics, but its production cost is too high, and application is very limited.Semiaromatic polyamide composition is diamines or dicarboxylic acid and the aliphatic dicarboxylic acid or the diamines of band aromatic nucleus, through the prepared polyamide resin of polycondensation, is a kind of in the aromatic polyamide.Owing in the polymeric amide molecular backbone chain, imported aromatic nucleus, thereby thermotolerance and mechanical property have been improved, reduced water-intake rate, and more suitable P/C ratio is arranged, be the high resin of thermotolerance between general engineering plastic nylon and thermostability engineering plastic PEEK, be mainly used in automobile and electric and electronic industry.
Though the semiaromatic polyamide composition temperature tolerance is better, mobile relatively poor in the course of processing, some problems can appear when injection moulding; Discontented phenomenon especially can appear annotating when the injection moulding thin wall parts.
As be prepared into liquid crystal/high-temperature nylon alloy, and both can solve the problem of liquid crystal weld mark strength difference, reduced cost, can improve the flowability of semiaromatic polyamide composition again.
The general general method for preparing the liquid crystal alloy is that liquid crystal and polymkeric substance are joined respectively in the screw extrusion press, and blend is extruded.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, the preparation method of the liquid crystal nylon alloy that a kind of cost is low, surface compatability is good is provided.
To achieve these goals, the present invention adopts following technical scheme:
A kind of method for preparing the liquid crystal nylon alloy comprises the steps: earlier liquid crystal oligomer and high-temperature nylon oligopolymer to be pulverized, and joins in the reactive screw extrusion press, adds compatilizer, and pelletizing is extruded in reaction, with the pellet solid-phase tack producing to relative viscosity 2.0-3.0.The fusing point of resulting polymers alloy is between 290-320 ℃.
In above-mentioned preparation method, the preferred heat-drawn wire of described high-temperature nylon oligopolymer is at the nylon more than 280 ℃.Comprise PA10T, PA6T, PA46, PA9T or the like.
In above-mentioned preparation method, described oligomeric reaction product is meant that molecular weight is at the polymkeric substance that is no more than 5 nanometers below 1500 with molecular length.Molecular weight and molecular length are superpolymer more than above-mentioned scope.The physical and chemical performance of oligopolymer changes with molecular weight is different, is an incomplete polymeric polymkeric substance.
In above-mentioned preparation method, described compatilizer is preferably trimesic acid or its mixture.
In above-mentioned preparation method, the particle diameter of extruding the particle of pelletizing is preferably 2-8mm.
In above-mentioned preparation method, the barrel temperature of described screw extrusion press is between 280-350 ℃.
In above-mentioned preparation method, the equipment of solid-phase tack producing is tackify tower or rotary drum.
Among the present invention, the main component of described liquid crystal oligomer is P-hydroxybenzoic acid, Resorcinol.
In above-mentioned preparation method, can add oxidation inhibitor, lubricant, nucleator, fire retardant, tinting material, softening agent or static inhibitor as required; Also can strengthen by adding glass fibre, carbon fiber or mineral filler.
Compared with prior art, the present invention has following beneficial effect: preparation method of the present invention has reduced the consumption of liquid crystal, thereby has reduced cost.In addition, preparation method of the present invention is owing to adopt compatilizer, and the liquid crystal nylon alloy surface compatability for preparing is good.Simultaneously, the thermotolerance of gained liquid crystal high-temperature nylon alloy is touched good fluidity with molten, and good processing stability is not corroded mould.
Embodiment
Every performance test methods of the liquid crystal/high-temperature nylon alloy of the present invention's preparation is as follows:
Tensile strength, the method for pressing GB-1040-79 is clear fixed.
Flexural strength: the method for pressing GB-1042-79 is measured.
Embodiment 1:
After 8.5kg liquid crystal oligomer and the fragmentation of 1.5kg high-temperature nylon oligopolymer, join in the reactive screw rod, add the 100g trimesic acid, reaction 3h extrudes pelletizing, with pellet solid-phase tack producing 10h, finishes reaction.
Embodiment 2:
After 5.0kg liquid crystal oligomer and the fragmentation of 5.0kg high-temperature nylon oligopolymer, join in the reactive screw rod, add the 100g trimesic acid, reaction 3h extrudes pelletizing, with pellet solid-phase tack producing 16h, finishes reaction.
Embodiment 3:
After 1.5kg liquid crystal oligomer and the fragmentation of 8.5kg high-temperature nylon oligopolymer, join in the reactive screw rod, add the 100g trimesic acid, reaction 3h extrudes pelletizing, with pellet solid-phase tack producing 12h, finishes reaction.
Performance such as the table 1 of embodiment 1-3.
Table 1
| Embodiment | 1 | 2 | 3 |
| The PA10T oligopolymer | 8.5 | 5.0 | 1.5 |
| The TLCP oligopolymer | 1.5 | 5.0 | 8.5 |
| Trimesic acid and compound thereof | 0.1 | 0.1 | 0.1 |
| Tensile strength (Mpa) | 70 | 72 | 75 |
| Flexural strength (Mpa) | 100 | 103 | 105 |
| Helical long (mm) | 900 | 1130 | 1500 |
By table 1 as seen, apparent homogeneous, nothing is separated.
Comparative example 1:
8.5kgPA10T and 1.5kgTLCP joined in the screw rod extrude.
Comparative example 2:
5.0kgPA10T and 5.0kgTLCP joined in the screw rod extrude.
Comparative example 3:
1.5kgPA10T and 8.5kgTLCP joined in the screw rod extrude.
The performance of comparative example 1-3 is as shown in table 2.
Table 2
| Comparative example | 1 | 2 | 3 |
| PA10T? | 8.5 | 5.0 | 1.5 |
| TLCP | 1.5 | 5.0 | 8.5 |
| Tensile strength (Mpa) | 68 | 70 | 72 |
| Flexural strength (Mpa) | 98 | 100 | 103 |
| Helical long (mm) | 900 | 1130 | 1500 |
By table 2 as seen, apparent being separated.
Embodiment 4
PA10T is replaced with PA6T, and other are constant.Preparation-obtained liquid crystal nylon alloy surface compatability, thermotolerance and moltenly touch good fluidity, good processing stability is not corroded mould.
Embodiment 5
PA10T is replaced with PA46, and other are constant.Preparation-obtained liquid crystal nylon alloy surface compatability, thermotolerance and moltenly touch good fluidity, good processing stability is not corroded mould.
Embodiment 6
PA10T is replaced with PA9T, and other are constant.Preparation-obtained liquid crystal nylon alloy surface compatability, thermotolerance and moltenly touch good fluidity, good processing stability is not corroded mould.
Claims (7)
1. method for preparing the liquid crystal nylon alloy is characterized in that: earlier liquid crystal oligomer and high-temperature nylon oligopolymer are pulverized, joined in the reactive screw extrusion press, add compatilizer, pelletizing is extruded in reaction, with the pellet solid-phase tack producing to relative viscosity 2.0-3.0.
2. method according to claim 1 is characterized in that: described high-temperature nylon oligopolymer is mainly PA10T, PA6T, PA46, PA9T.
3. method according to claim 1 is characterized in that: described compatilizer is trimesic acid or its mixture.
4. method according to claim 1 is characterized in that: the particle diameter of extruding the particle of pelletizing is 2-8mm.
5. method according to claim 1 is characterized in that: the barrel temperature of screw extrusion press is between 280-350 ℃.
6. method according to claim 1 is characterized in that: the equipment of solid-phase tack producing is tackify tower or rotary drum.
7. preparation method as claimed in claim 1 is characterized in that: described high-temperature nylon oligopolymer is meant that heat-drawn wire is at the nylon more than 280 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010596104A CN102079868B (en) | 2010-12-20 | 2010-12-20 | Method for preparing liquid crystal nylon alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010596104A CN102079868B (en) | 2010-12-20 | 2010-12-20 | Method for preparing liquid crystal nylon alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102079868A true CN102079868A (en) | 2011-06-01 |
| CN102079868B CN102079868B (en) | 2012-10-10 |
Family
ID=44086075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010596104A Expired - Fee Related CN102079868B (en) | 2010-12-20 | 2010-12-20 | Method for preparing liquid crystal nylon alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102079868B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103804901A (en) * | 2012-11-14 | 2014-05-21 | 上海杰事杰新材料(集团)股份有限公司 | Liquid crystal polymer/ semi-aromatic nylon alloy material and preparation method thereof |
| CN104559162A (en) * | 2013-10-28 | 2015-04-29 | 上海杰事杰新材料(集团)股份有限公司 | Aromatic high temperature resistance nylon/thermally induced liquid crystal composite material with electromagnetic shielding function and preparation method of aromatic high temperature resistance nylon/thermally induced liquid crystal composite material |
| CN108239281A (en) * | 2016-12-27 | 2018-07-03 | 上海杰事杰新材料(集团)股份有限公司 | A kind of branched high-temperature nylon and preparation method thereof |
| CN108264741A (en) * | 2017-12-26 | 2018-07-10 | 上海普利特化工新材料有限公司 | A kind of liquid crystal polyester/nylon composite materials and preparation method thereof |
| CN108276746A (en) * | 2017-12-26 | 2018-07-13 | 上海普利特化工新材料有限公司 | A kind of liquid crystal polyester/nylon alloy material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5102935A (en) * | 1988-09-13 | 1992-04-07 | Bayer Aktiengesellschaft | Free-flowing polyamide molding compounds and blends |
| JPH04323262A (en) * | 1991-04-24 | 1992-11-12 | Plus Teku Kk | Heat-resistant and electrically conductive resin composition |
| CN101817977A (en) * | 2009-09-27 | 2010-09-01 | 深圳市科聚新材料有限公司 | Polyphthalamide composite material and preparation method thereof |
-
2010
- 2010-12-20 CN CN201010596104A patent/CN102079868B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5102935A (en) * | 1988-09-13 | 1992-04-07 | Bayer Aktiengesellschaft | Free-flowing polyamide molding compounds and blends |
| JPH04323262A (en) * | 1991-04-24 | 1992-11-12 | Plus Teku Kk | Heat-resistant and electrically conductive resin composition |
| CN101817977A (en) * | 2009-09-27 | 2010-09-01 | 深圳市科聚新材料有限公司 | Polyphthalamide composite material and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103804901A (en) * | 2012-11-14 | 2014-05-21 | 上海杰事杰新材料(集团)股份有限公司 | Liquid crystal polymer/ semi-aromatic nylon alloy material and preparation method thereof |
| CN104559162A (en) * | 2013-10-28 | 2015-04-29 | 上海杰事杰新材料(集团)股份有限公司 | Aromatic high temperature resistance nylon/thermally induced liquid crystal composite material with electromagnetic shielding function and preparation method of aromatic high temperature resistance nylon/thermally induced liquid crystal composite material |
| CN104559162B (en) * | 2013-10-28 | 2018-08-24 | 上海杰事杰新材料(集团)股份有限公司 | A kind of aromatic series high temperature resistant nylon/thermotropic liquid crystal composite material and preparation method with electro-magnetic screen function |
| CN108239281A (en) * | 2016-12-27 | 2018-07-03 | 上海杰事杰新材料(集团)股份有限公司 | A kind of branched high-temperature nylon and preparation method thereof |
| CN108264741A (en) * | 2017-12-26 | 2018-07-10 | 上海普利特化工新材料有限公司 | A kind of liquid crystal polyester/nylon composite materials and preparation method thereof |
| CN108276746A (en) * | 2017-12-26 | 2018-07-13 | 上海普利特化工新材料有限公司 | A kind of liquid crystal polyester/nylon alloy material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102079868B (en) | 2012-10-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102153857B (en) | High-filled modified-surface strengthened polyamide composition | |
| CN102585491B (en) | Reinforced polyamide composition with high liquidity and low warpage and preparation method and application thereof | |
| CN102276977B (en) | High-performance anti-warping nylon material and preparation method thereof | |
| CN102079868B (en) | Method for preparing liquid crystal nylon alloy | |
| CN102276964A (en) | Degradable engineering plastic and preparation method thereof | |
| CN105419316B (en) | A kind of polyamide material of high weld mark strength enhancing and preparation method and application | |
| CN102964690A (en) | High-strength corrosion resistance polypropylene composite material and preparation method thereof | |
| CN101768358A (en) | PPS (polyphenylene sulfite)/LCP (liquid crystal polymer) composite material and preparation method thereof | |
| CN102604373A (en) | Formula of nylon hose | |
| CN104629338A (en) | Permanently antistatic PC/ABS modified alloy, and preparation method thereof | |
| CN105400226A (en) | PE (polyethylene) wood-plastic composite material with high modulus | |
| CN107325541A (en) | High apparent composite of high-strength nylon 6 of high glass and preparation method thereof | |
| CN102757639A (en) | High-strength high-wear-resistance nylon and preparation method thereof | |
| CN108587108A (en) | A kind of impact PPO/PA alloy materials and preparation method thereof | |
| CN107365480A (en) | NMT materials of high heat-resisting low-k and preparation method thereof | |
| CN105623250A (en) | Polyamide, glass fiber and interface bonding agent composite and preparation method thereof | |
| CN107428063A (en) | Continuous fiber reinforced polyarylene sulfide resin products formed and its manufacture method | |
| CN104387747A (en) | Polyphenylether/polyamide/polystyrene plastic alloy, and preparation method and application thereof | |
| CN103408927A (en) | Composite fiber modified nylon material and preparation method thereof | |
| CN104227865A (en) | Preparation of continuous glass fiber reinforced polyamide material | |
| CN102079869B (en) | Preparation method of liquid crystal nylon alloy | |
| CN105647174A (en) | Wear-resistant and high-temperature resistant nylon composite material and preparation method therefor | |
| CN104387662A (en) | Low-cost scratch-resistant PP/PET (propene polymer/polyethylene terephthalate) alloy material and preparation method thereof | |
| CN102924921A (en) | High comparative tracking index polyphenylene sulfide reinforced composite material and preparation process thereof | |
| CN108384089B (en) | Modified high-density polyethylene material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121010 Termination date: 20201220 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |