CN103819927B - A kind of light-colored antistatic liquid crystal polymer composite and preparation method thereof - Google Patents

A kind of light-colored antistatic liquid crystal polymer composite and preparation method thereof Download PDF

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CN103819927B
CN103819927B CN201410090513.6A CN201410090513A CN103819927B CN 103819927 B CN103819927 B CN 103819927B CN 201410090513 A CN201410090513 A CN 201410090513A CN 103819927 B CN103819927 B CN 103819927B
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liquid crystal
crystal polymer
mineral filler
light
glass fibre
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CN103819927A (en
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汪济奎
张帝漆
周旭
蔡昊
郭卫红
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East China University of Science and Technology
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/12—Making granules characterised by structure or composition
    • B29B9/14—Making granules characterised by structure or composition fibre-reinforced
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58—Component parts, details or accessories; Auxiliary operations
    • B29B7/72—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7461—Combinations of dissimilar mixers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/88—Adding charges, i.e. additives
    • B29B7/90—Fillers or reinforcements, e.g. fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/04—Particle-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/12—Making granules characterised by structure or composition
    • B29B2009/125—Micropellets, microgranules, microparticles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92561—Time, e.g. start, termination, duration or interruption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
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    • B29C2948/9259—Angular velocity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92828—Raw material handling or dosing, e.g. active hopper or feeding device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
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    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
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Abstract

The present invention relates to a kind of light color and liquid crystal polymer composite with static resistance and preparation method thereof.This matrix material is primarily of the mineral filler of liquid crystal polymer, glass fibre, modification and static inhibitor composition, its composition and weight proportion are: liquid crystal polymer 50-80%, glass fibre 5-30%, static inhibitor 5-30%, inert filler 5-20%, oxidation inhibitor 0.2-5%.After mineral filler titanate coupling agent 401 is carried out surface modification treatment, at 100-200 DEG C, distinguish vacuum-drying 1-10 hour with liquid crystal polymer, glass fibre, static inhibitor, by a certain percentage they are mixed 2-10 minute with static inhibitor and all the other auxiliary agents in high speed mixer; The material of mixing is added twin screw extruder is extruded, granulation.Light liquid crystal polymer prepared by the present invention has outstanding static resistance, and preparation technology is simple, and mechanical property is excellent.

Description

A kind of light-colored antistatic liquid crystal polymer composite and preparation method thereof
Technical field
The present invention relates to technical field of polymer materials, relate to a kind of light color and liquid crystal polymer composite with antistatic property and preparation method thereof.
Background technology
At present, along with the development of polymer material science and technology, the demand for material property is more complicated and diversified, and liquid crystal polymer attract attention gradually.Wherein thermotropic liquid crystal high polymer (TLCP) is a kind of high performance polymer material, and have very excellent mechanical property, heat-drawn wire is high, and precision size degree and dimensional stability are all very high, becomes rapidly domestic and international study hotspot.TLCP can be used for manufacturing precise electronic product part, circuit card, vehicle mould, assembly etc.But because TLCP has very high surface resistivity, limit its application to a certain extent, need to improve its performance further, could be applied widely.
Reduce the surface resistivity of polymkeric substance, general by modes such as interior interpolation static inhibitor or small molecules graphitized carbon blacks, Chinese patent (101768448A) is by adding carbon black, inorganic conductive filler as the filler of TLCP, obtain the TLCP with certain static resistance, but the obtained polymkeric substance of this invention is black, be difficult to change color, be subject to many limitations in application process, and static resistance poor effect.And there is very high heat-drawn wire (HDT) due to TLCP, some conventional static inhibitor are difficult to reach such heat resisting temperature, namely allow to keep high heat resistance, also can be difficult to because of the high-precision of TLCP migrate to polymer surfaces, cause static resistance poor effect, persistence is low.The present invention by the Polymer-metallic Catalyst that there is high heat resistance with a kind of and other inorganic conductive fillers composite, allow its keep the rate of migration of overall constant, the surface resistivity of TLCP obviously declines, and keeps good static resistance for a long time.
Summary of the invention
For the defect of prior art, the present invention use a kind of there is high heat resistance Polymer-metallic Catalyst and other inorganic conductive fillers composite, allow it keep the rate of migration of overall constant, the surface resistivity of TLCP matrix material obviously declines, and the good static resistance of long-term maintenance.
The present invention is achieved by the following technical solutions:
A kind of light-colored antistatic liquid crystal polymer composite, be made up of liquid crystal polymer, glass fibre, static inhibitor, mineral filler and oxidation inhibitor, the weight percent of its component is as follows:
Described liquid crystal polymer be selected from Puli special KG300, Du Pont LCP6300BK one or both,
Described glass fibre is short glass fiber and/or long glass fibres;
Described static inhibitor is be selected from one or more in Clariant HS-1, Clariant SAS-93, BASF IrgastatP18;
Described mineral filler be selected from conductive titanium dioxide LJ-R944, nano antimony-doped tin dioxide GN-F-A01 one or both;
Described conductive titanium dioxide, nano antimony-doped tin dioxide all first use titanate coupling agent 401(tetra isopropyl two (the sub-tetra-sodium fat of dioctyl) titanic acid ester) carry out surface modification treatment, coupling agent consumption is 5% ~ 10% of packing quality used, obtains the mineral filler of modification;
Described oxidation inhibitor is one or more of BASF irgasfos 168, antioxidant 1010 and oxidation inhibitor PS100.
The present invention also provide a kind of described in meet the preparation method of material, concrete preparation concrete steps are as follows:
(1) with dehydrated alcohol by titanate coupling agent 401 dilution to be mass percent be 5% solution, mineral filler is added in above-mentioned coupling agent solution, after stirring 30 ~ 60min, becomes starchiness, is dried extremely Powdered, obtain modified mineral filler;
(2) liquid crystal polymer, glass fibre, modified mineral filler, static inhibitor are distinguished at 100-200 DEG C vacuum-drying 1-10 hour again, in described ratio, they are mixed 2-10 minute with oxidation inhibitor in high speed mixer;
(3) by step 2) material that mixes adds that forcing machine is extruded, granulation, forcing machine each district temperature is respectively: 280 ~ 300 DEG C, 300 ~ 310 DEG C, 300 ~ 310 DEG C, 310 ~ 320 DEG C, 310 ~ 320 DEG C, 320 ~ 330 DEG C, 320 ~ 340 DEG C, rotating speed is 100 ~ 200 revs/min, obtains light-colored antistatic liquid crystal polymer composite.
Described forcing machine is single screw extrusion machine or twin screw extruder.
Obtained material prepares sample detection antistatic property by injection moulding machine injection molding.
Beneficial effect
The present invention adopts static inhibitor and inorganic molecules as filler, obtains light-colored antistatic liquid crystal polymer composite by carrying out compound with TLCP.Compared with prior art, the light-colored antistatic liquid crystal high score matrix material antistatic property obtained by the present invention is excellent, and keeps good mechanical property.TLCP surface resistivity is reduced to 10 8-10 9Ω/sq, antistatic effect is lasting, and water-wash resistance is good, has cost low, effective advantage.Light color TLCP can add colour batch and change material color in post-production process, provides the diversity of materials'use, is applicable to suitability for industrialized production.
Embodiment
Embodiment further describes the present invention below, and do not violating under aim of the present invention, the present invention should be not limited to the content that following examples are specifically expressed.
The present invention is raw materials used as follows, is all commercially available prod:
Liquid crystal polymer, KG300, Shanghai Pulite Composite Material Co., Ltd;
Liquid crystal polymer, LCP6300BK, Du Pont China Holding Co., Ltd.;
Glass fibre, 3010A, Chongqing Polycomp International Co., Ltd;
Static inhibitor, HS-1, Clariant SAS-93, Switzerland's Clariant Chemical Group;
Static inhibitor, IrgastatP18, German BASF AG;
Conductive titanium dioxide, LJ-R944, Shanghai Liang Jiang titanium white heavy chemicals company limited;
Nano antimony-doped tin dioxide, GN-F-A01, its nanosecond science and technology Shanghai company limiteds many;
Antioxidant 1010, irgasfos 168, oxidation inhibitor PS800, German BASF AG
Embodiment 1
With dehydrated alcohol by titanate coupling agent 401 dilution to be mass percent be 5% solution, titanium dioxide LJ-R944 is added in above-mentioned coupling agent solution, after stirring 30 ~ 60min, becomes starchiness, is dried extremely Powdered, obtain modified titanium dioxide LJ-R944.Accurately take 69.3 parts of liquid crystal polymer KG300,10 parts of glass fibre 3010A, 10 parts of static inhibitor HS-1,10 parts of modified conductive titanium dioxide LJ-R944, and 0.3 part of antioxidant 1010,0.4 part of irgasfos 168.Liquid crystal polymer, glass fibre, the vacuum-drying 5 hours at 120 DEG C of static inhibitor and conductive titanium dioxide.Dried material is added in high speed mixer and mixes 5 minutes, then the material after mixing is added in twin screw extruder extrude, granulation.Forcing machine each district temperature from spout to extrusion die is respectively 280 DEG C, 300 DEG C, 310 DEG C, 320 DEG C, 320 DEG C, 330 DEG C, 340 DEG C, and rotating speed is 150 revs/min.By the polymkeric substance that obtains at 120 DEG C dry 4 hours, prepare the batten of test performance with injection moulding method.Injection temperature 340 DEG C, injection pressure 20MPa, inject time 5sec, cooling time 5sec, mould temperature 100 DEG C.The batten prepared is statically placed in temperature 25 DEG C, test performance after 24 hours in the thermostatic constant wet chamber of 50% humidity.The tensile strength of gained liquid crystal polymer composite is 142MPa, and notched Izod impact strength is 135J/m, and flexural strength is 210MPa, and heat-drawn wire is 257 DEG C.Placing one day rear surface resistivity is 5.7 × 10 12Ω .cm, placing 7 days rear surface resistivity is 6.3 × 10 9Ω .cm, placing 30 days rear surface resistivity is 4.9 × 10 8Ω .cm.The good mechanical performance of gained liquid crystal polymer composite, surface resistivity can reach 10 8Ω about .cm, has good antistatic effect.
Embodiment 2
With dehydrated alcohol by titanate coupling agent 401 dilution to be mass percent be 5% solution, titanium dioxide LJ-R944 is added in above-mentioned coupling agent solution, after stirring 30 ~ 60min, becomes starchiness, is dried extremely Powdered, obtain modified titanium dioxide LJ-R944.Accurately take 59.3 parts of liquid crystal polymer KG300,10 parts of glass fibre 3010A, 15 parts of static inhibitor HS-1,15 parts of modified conductive titanium dioxide LJ-R944, and 0.3 part of antioxidant 1010,0.4 part of irgasfos 168.Liquid crystal polymer, glass fibre, the vacuum-drying 5 hours at 120 DEG C of static inhibitor and conductive titanium dioxide.All the other operations are identical with embodiment 1, the batten prepared are statically placed in temperature 25 DEG C, test performance after 24 hours in the thermostatic constant wet chamber of 50% humidity.The tensile strength of gained liquid crystal polymer composite is 115MPa, and notched Izod impact strength is 110J/m, and flexural strength is 147MPa, and heat-drawn wire is 235 DEG C.Placing one day rear surface resistivity is 5.9 × 10 10Ω .cm, placing 7 days rear surface resistivity is 2.2 × 10 8Ω .cm, placing 30 days rear surface resistivity is 8.4 × 10 7Ω .cm.After increase static inhibitor and mineral filler consumption, the mechanical property of gained liquid crystal polymer composite slightly declines than embodiment 1, but surface resistivity can remain on 10 for a long time 7Ω about .cm, has good antistatic effect.
Embodiment 3
With dehydrated alcohol by titanate coupling agent 401 dilution to be mass percent be 5% solution, nano antimony-doped tin dioxide GN-F-A01 is added in above-mentioned coupling agent solution, starchiness is become after stirring 30 ~ 60min, dried to Powdered, obtained modified nano antimony-doped tin dioxide GN-F-A01.Accurately take 59.3 parts of liquid crystal polymer LCP6300BK, 10 parts of glass fibre 3010A, 10 parts of static inhibitor IrgastatP18,20 parts of modified nano antimony-doped tin dioxide GN-F-A01, and 0.3 part of antioxidant 1010,0.4 part of irgasfos 168.Liquid crystal polymer, glass fibre, the vacuum-drying 5 hours at 120 DEG C of static inhibitor and conductive titanium dioxide.All the other operations are identical with embodiment 1, the batten prepared are statically placed in temperature 25 DEG C, test performance after 24 hours in the thermostatic constant wet chamber of 50% humidity.The tensile strength of gained liquid crystal polymer composite is 118MPa, and notched Izod impact strength is 116J/m, and flexural strength is 142MPa, and heat-drawn wire is 231 DEG C.Placing one day rear surface resistivity is 4.6 × 10 9Ω .cm, placing 7 days rear surface resistivity is 9.1 × 10 8Ω .cm, placing 30 days rear surface resistivity is 6.4 × 10 7Ω .cm.Apply different liquid crystal polymer and mineral filler, the mechanical property of gained liquid crystal polymer is close with embodiment 2, and surface resistivity also can remain on 10 for a long time 7Ω about .cm, has good antistatic effect.
Have excellent static resistance according to the Antistatic type liquid crystal polymer composite that aforesaid method obtains, persistence is high, and maintains the tensile strength of material, shock strength and flexural strength to the full extent, and heat-drawn wire change is little.Liquid crystal polymer composite simultaneously obtained by present method is of light color, and have post-production diversity, therefore, the present invention has stronger application prospect.

Claims (3)

1. a light-colored antistatic liquid crystal polymer composite, is characterized in that, described matrix material is made up of liquid crystal polymer, glass fibre, static inhibitor, mineral filler and oxidation inhibitor, and the weight percent of its component is as follows:
Described liquid crystal polymer be selected from Puli special KG300, Du Pont LCP6300BK one or both;
Described glass fibre is short glass fiber and/or long glass fibres;
Described static inhibitor is be selected from one or more in Clariant HS-1, Clariant SAS-93, BASF IrgastatP18;
Described mineral filler be selected from conductive titanium dioxide LJ-R944, nano antimony-doped tin dioxide GN-F-A01 one or both;
The mineral filler of described modification is: conductive titanium dioxide or nano antimony-doped tin dioxide titanate coupling agent 401 are carried out surface modification treatment, and coupling agent consumption is 5% ~ 10% of packing quality used;
Described oxidation inhibitor is be selected from one or more of BASF irgasfos 168, antioxidant 1010 and oxidation inhibitor PS100.
2. a preparation method for light-colored antistatic liquid crystal polymer composite as claimed in claim 1, is characterized in that, comprising the steps: of described method
(1) with dehydrated alcohol by titanate coupling agent 401 dilution to be mass percent be 5% ~ 10% solution, mineral filler is added in above-mentioned coupling agent solution, after stirring 30 ~ 60min, becomes starchiness, is dried extremely Powdered, obtain modified mineral filler;
(2) liquid crystal polymer, glass fibre, modified mineral filler, static inhibitor are distinguished at 100-200 DEG C vacuum-drying 1-10 hour again, in described ratio, they are mixed 2-10 minute with oxidation inhibitor in high speed mixer;
(3) by step 2) material that mixes adds that forcing machine is extruded, granulation, forcing machine each district temperature is respectively: 280 ~ 300 DEG C, 300 ~ 310 DEG C, 300 ~ 310 DEG C, 310 ~ 320 DEG C, 310 ~ 320 DEG C, 320 ~ 330 DEG C, 320 ~ 340 DEG C, rotating speed is 100 ~ 200 revs/min, obtains light-colored antistatic liquid crystal polymer composite.
3. a preparation method for light-colored antistatic liquid crystal polymer composite as claimed in claim 2, is characterized in that, described forcing machine is single screw extrusion machine or twin screw extruder.
CN201410090513.6A 2014-03-12 2014-03-12 A kind of light-colored antistatic liquid crystal polymer composite and preparation method thereof Expired - Fee Related CN103819927B (en)

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CN106280371B (en) * 2016-08-24 2018-08-28 五行科技股份有限公司 A kind of antistatic moulding compound and preparation method thereof comprising electroconductive glass fibre
CN106883636A (en) * 2017-04-07 2017-06-23 深圳市华盈新材料有限公司 Basalt strengthens LCP composites and its preparation technology
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