CN105482387B - A kind of toughening modifying transparent PET sheet material composite material and preparation method thereof - Google Patents

A kind of toughening modifying transparent PET sheet material composite material and preparation method thereof Download PDF

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CN105482387B
CN105482387B CN201610045794.2A CN201610045794A CN105482387B CN 105482387 B CN105482387 B CN 105482387B CN 201610045794 A CN201610045794 A CN 201610045794A CN 105482387 B CN105482387 B CN 105482387B
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composite material
pet sheet
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sheet material
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CN105482387A (en
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涂志刚
钟永强
叶德成
刘晓艳
赵素芬
张莉琼
熊立贵
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Zhongshan Jinggong Polymer Materials Co ltd
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Zhong Shanbeihua Macromolecular Material Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00Making granules
    • B29B9/02Making granules by dividing preformed material
    • B29B9/06Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/92Measuring, controlling or regulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/92514Pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/92542Energy, power, electric current or voltage
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/9258Velocity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/92704Temperature
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/002Physical properties
    • C08K2201/003Additives being defined by their diameter
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/08Stabilised against heat, light or radiation or oxydation
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/10Transparent films; Clear coatings; Transparent materials
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00Properties characterising the ingredient of the composition
    • C08L2207/04Thermoplastic elastomer

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Abstract

The invention discloses a kind of toughening modifying transparent PET sheet material composite material and preparation method thereof, which is made of following weight percent composition:Polyethylene terephthalate 75~85%, nanocrystalline silicon 0.1~0.5%, thermoplastic elastomer (TPE) 5~10%, liquid polypropylene glycol ester 1~5%, makrolon 8~15%, silane coupling agent 0.1~0.3%, antioxidant 0.1~0.5%.The PET sheet composite material of the present invention has the advantages that outside impact strength is excellent, rigidity is strong, toughness is big the also effect with highly transparent in the case where not influencing the characteristics of PET in itself.

Description

A kind of toughening modifying transparent PET sheet material composite material and preparation method thereof
【Technical field】
The present invention relates to a kind of toughening modifying transparent PET sheet material composite material and preparation method thereof, belong to PET modified materials Technical field.
【Background technology】
Polyethylene terephthalate is cheap, has excellent wearability, heat resistance, chemical proofing, electricity The advantages that insulating properties and high mechanical strength, however the shortcomings that its brittleness is big, toughness is poor still limit its application range.
Chinese patent 200410017174.5 disclose a kind of high tenacity pet copolymer and its Preparation method.The composition of this high tenacity PET blends is PET, the elastomer containing epoxide group and oxygen containing crosslinking agent.Should Patent is to elaborate the constituent of toughened PET and do not consider to prepare the problem of product is transparent with the invention.
This patent uses the elastic body toughening plastics of epoxide group, although the impact resistance of material can be increased substantially Can, but also result in the degradation of the entirety such as its intensity, rigidity, heat resistance at the same time, and material is also greatly improved Cost.
【The content of the invention】
The purpose of the invention is to overcome the deficiencies of the prior art and provide a kind of transparency it is high and with preferably rigidity and The toughening modifying transparent PET sheet material composite material of impact strength.
It is a further object of the present invention to provide a kind of preparation method of above-mentioned toughening modifying transparent PET sheet material composite material.
The present invention to achieve these goals, using following technical scheme:
A kind of toughening modifying transparent PET sheet material composite material, it is characterised in that be made of following weight percent composition:
The inherent viscosity of polyethylene terephthalate (PET) in the present invention is 0.4~1.0dl/g, is preferably 0.78dl/g。
The nanocrystalline silicon particle diameter in the present invention can accelerate the crystalline rate of resin, carefully in the range of 5~50nm Change crystal size, it is more that its crystalline rate than pure PET improves three times.
Due to nano-crystal silicon film easily with the hydrone effect in air and carry hydroxyl, show very strong hydrophilic thin Oiliness, is difficult to dispersed in organic media, it is difficult to is combined very well with base-material, easily causes boundary defect, cause material property Decline, the superior function of nano material is cannot get due performance, therefore it is solution to carry out surface treatment using silane coupling agent Certainly one of effective ways of the above problem.
The silane coupling agent of the present invention is colourless to light yellow transparent liquid.Its molecular structure is
The tensile strength of thermoplastic elastomer (TPE) in the present invention is >=18MPa;Elongation at break is >=400%;300% is fixed Stress is stretched for >=5.0Mpa;Setafter break≤48%, is that processing fluidity is good, product surface is highly polished, elastic recovery Good thermoplastic elastomer (TPE), preferably SEBS.
Thermoplastic elastomer (TPE), nano particle or PC form dispersed phase, liquid adjuvants (liquid poly- third in continuous phase PET material Diol ester) it is dissolved in the interface of continuous phase and dispersed phase, eliminate matrix PET and their interface optical difference.
Continuous phase PET and PC, the melting of thermoplastic elastic physical efficiency for entirety (a in such as Fig. 1) with dispersed phase is inorganic receives Rice material (b in such as Fig. 1) selects to have good compatibility with thermoplastic elastomer (TPE), makrolon there are optical interface difference Liquid adjuvants (C in such as Fig. 2) can effectively be dissolved between continuous phase and dispersed phase, the optical interface for eliminating both is poor It is different, material overall optical characteristics one is shown the effect for reaching transparent.
Liquid polypropylene glycol ester in the present invention is dibenzoic acid dimerization propylene glycol ester, oxalic acid polypropylene glycol ester and methyl One or more in acrylic acid polypropylene glycol ester.
Makrolon (PC) good mechanical performance in the present invention, its glass transition temperature are 145 DEG C -150 DEG C, toughness It is good, but resistance to ag(e)ing and mobility are poor.The impact strength of PET can be improved with PET blendings.
The refraction index of makrolon (PC) is 1.59 and the refraction index of polyethylene terephthalate (PET) is 1.58;Selection can effectively reduce the path of light scattering with PC similar in basis material index of refraction, transparency declines less, can not be effective Masking light source to reach transparent requirement.
Antioxidant is that fusing point is 110~125 DEG C in the present invention, ash content≤0.1%, and volatile matter≤0.5% is nontoxic nonflammable White powder.
A kind of preparation method of above-mentioned toughening modifying transparent PET sheet material composite material, it is characterised in that comprise the following steps:
First by polyethylene terephthalate when 170 DEG C of oven drying 3 is small, while by nanocrystalline silicon silane Coupling agent forms cladding Nano filling after carrying out the Passivation Treatment on surface, then is uniformly mixed with thermoplastic elastomer (TPE), finally again with Other each component raw materials be uniformly mixed to be formed blend, via double screw extruder melting extrusion, dry cooling, granulating and forming i.e. Can.
The surface treatment method of nanocrystalline silicon is in the present invention:
A certain amount of nanocrystalline silicon is added into absolute ethyl alcohol/water (volume ratio 3:1) in mixed liquor, in 4000r/ Make its fully dispersed under min high speed shears, adjust shear rate to 2000r/min, 70 DEG C or so of reaction temperature, it is even to add silane Join agent, with oxalic acid solution regulation system pH value to 4 or so.Reaction 90min filters nanocrystal silicon suspension, and filter cake is through dry Dry, grinding, up to modified Nano crystal silicon powder.
When preparing composite material of the present invention, temperature range when double screw extruder produces is controlled at 160~265 DEG C, main For electromechanical flow control the 80~85% of equipment rated current, engine speed and feeding control are 300~350r/min and 20 respectively ~30HZ, melt pressure are controlled in 2.0~3.5MPa.
Specifically each area's temperature range control is as follows for the double screw extruder:I 160~180 DEG C of area's temperature, II area 180~ 190 DEG C, 220~230 DEG C of III area's temperature, 250~260 DEG C of IV area's temperature, 250~260 DEG C of V area's temperature, VI area's temperature 250~ 260 DEG C, 250~260 DEG C of VII area's temperature, 240~250 DEG C of VIII area's temperature, 240~250 DEG C of Ⅸ area's temperature, die head temperature 260 ~265 DEG C.
The present invention has the advantages that relative to the prior art:
The present invention is poly- to benzene using thermoplastic elastomer (TPE), makrolon, nano material and the collaboration of liquid polypropylene glycol ester Naphthalate toughness reinforcing, it is such synergistic effect can not only make material can also be kept while toughness reinforcing the strength of materials, Rigidity, the stability of heat resistance, and can significantly reduce production cost.Liquid and thermoplastic elastomer (TPE), makrolon There is good compatibility, eliminate the interface optics opposite sex of thermoplastic elastomer (TPE), makrolon, nano material and PET, make material Overall optical characteristics are consistent.
The PET sheet composite material of the present invention is excellent, rigid with impact strength in the case where not influencing the characteristics of PET in itself By force, also there is the effect of highly transparent outside the advantages of toughness is big.
【Brief description of the drawings】
Fig. 1 is to be not added with continuous phase and dispersed phase interface anaclasis figure during liquid adjuvants;
Fig. 2 is dissolved in continuous phase and anaclasis figure in dispersed phase interface for liquid adjuvants.
【Embodiment】
With reference to specific embodiment, the invention will be further described:
The each component proportioning of embodiment 1-5 is as shown in table 1:
Table 1:
The preparation method of embodiment 1-5 is:
First by polyethylene terephthalate when 170 DEG C of oven drying 3 is small, while described in nanocrystalline silicon used Silane coupling agent be surface-treated after, then mix with the thermoplastic elastomer (TPE), finally again by other each component raw materials It is uniformly mixed and forms blend, via double screw extruder melting extrusion, dry cooling, granulating and forming;
The surface treatment method of wherein nanocrystalline silicon is:A certain amount of nanocrystalline silicon is added into absolute ethyl alcohol/water (body Product is than being 3:1) in mixed liquor, make its fully dispersed under 4000r/min high speed shears, adjust shear rate to 2000r/ Min, 70 DEG C or so of reaction temperature, adds silane coupling agent, with oxalic acid solution regulation system pH value to 4 or so.Reacting 90min will Nanocrystal silicon suspension filters, and filter cake is through drying, grinding, up to modified Nano crystal silicon powder.
It is below nanocrystalline silicon and the process of grafting of silane coupling agent:
Wherein the host current control of double screw extruder controls respectively in 40A, engine speed and the control of feeding rotating speed 300r/min and 30HZ, melt pressure are controlled in 2.05MPa, and pelleter rotating speed is 450r/min, each area's temperature control such as institute of table 2 Show,
Table 2:
1 area DEG C 2 areas DEG C 3 areas DEG C 4 areas DEG C 5 areas DEG C
165 180 220 245 245
6 areas DEG C 7 areas DEG C 8 areas DEG C 9 areas DEG C Die head temperature DEG C
245 245 240 240 265
The technological parameter of double screw extruder of the present invention belongs to conventional parameter ranges, does not just enumerate embodiment.
The embodiment 1-5 composite sheets prepared are tested for the property, test result is as shown in table 3.
Table 3:
Compared with other existing toughening materials, toughening modifying transparent PET sheet material prepared by the present invention is with preferable transparent Property, can reach identical toughening effect and cost is low.

Claims (9)

1. a kind of toughening modifying transparent PET sheet material composite material, it is characterised in that be made of following weight percent composition:
The thermoplastic elastomer (TPE) is SEBS.
2. a kind of toughening modifying transparent PET sheet material composite material according to claim 1, it is characterised in that described poly- to benzene The inherent viscosity of naphthalate is 0.4~1.0dl/g.
3. a kind of toughening modifying transparent PET sheet material composite material according to claim 1, it is characterised in that described nanocrystalline Body silicon grain footpath is in the range of 5~50nm.
A kind of 4. toughening modifying transparent PET sheet material composite material according to claim 1, it is characterised in that the liquid Polypropylene glycol ester is one in dibenzoic acid dimerization propylene glycol ester, oxalic acid polypropylene glycol ester and methacrylic acid polypropylene glycol ester Kind is several.
A kind of 5. toughening modifying transparent PET sheet material composite material according to claim 1, it is characterised in that the poly- carbonic acid The glass transition temperature of ester is 145 DEG C -150 DEG C.
A kind of 6. toughening modifying transparent PET sheet material composite material according to claim 1, it is characterised in that the silane Coupling agent is colourless to light yellow transparent liquid, its molecular formula is CH2=C (CH3)COO(CH2)3Si(OCH3)3
7. a kind of preparation method of toughening modifying transparent PET sheet material composite material any one of claim 1-6, it is special Sign is to comprise the following steps:
First by polyethylene terephthalate when 170 DEG C of oven drying 3 is small, while by nanocrystalline silicon with silane coupled After agent is surface-treated, then uniformly mix with thermoplastic elastomer (TPE), finally be uniformly mixed to be formed with other each component raw materials again Blend, via double screw extruder melting extrusion, dry cooling, granulating and forming.
A kind of 8. preparation method of toughening modifying transparent PET sheet material composite material according to claim 7, it is characterised in that Temperature range during the double screw extruder production is controlled at 160~265 DEG C, and host current control is in equipment rated current 80~85%, engine speed and feeding control are 300~350r/min and 20~30Hz respectively, melt pressure control 2.0~ 3.5MPa。
A kind of 9. preparation method of toughening modifying transparent PET sheet material composite material according to claim 8, it is characterised in that Specifically each area's temperature range control is as follows for the double screw extruder:I 160~180 DEG C of area's temperature, 180~190 DEG C of IIth area, III 220~230 DEG C of area's temperature, 250~260 DEG C of IV area's temperature, 250~260 DEG C of V area's temperature, 250~260 DEG C of VI area's temperature, VII 250~260 DEG C of area's temperature, 240~250 DEG C of VIII area's temperature, 240~250 DEG C of Ⅸ area's temperature, die head temperature are 260~265 DEG C.
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CN108384203A (en) * 2018-03-01 2018-08-10 苏州维洛克电子科技有限公司 Sheet material of temperature-resistanpolyester polyester containing urea and preparation method thereof
CN109836795B (en) * 2019-02-01 2021-03-12 绍兴君合新材料科技有限公司 Self-compatibilization modified PET/PC alloy and preparation method thereof
CN110577726B (en) * 2019-09-27 2021-10-26 东华大学 Inorganic particle and thermoplastic resin powder mixed-layer hot-melt die-casting composite resin sheet and preparation method and application thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101423656A (en) * 2008-12-04 2009-05-06 上海大学 Polycarbonate/polyester alloy nano composite material and preparation method thereof
CN102627840A (en) * 2012-04-16 2012-08-08 上海大学 Polyethylene glycol terephthalate composite material and preparation method thereof
CN104004327A (en) * 2013-02-27 2014-08-27 合肥杰事杰新材料股份有限公司 Polycarbonate/polyethylene glycol terephthalate alloy material and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101423656A (en) * 2008-12-04 2009-05-06 上海大学 Polycarbonate/polyester alloy nano composite material and preparation method thereof
CN102627840A (en) * 2012-04-16 2012-08-08 上海大学 Polyethylene glycol terephthalate composite material and preparation method thereof
CN104004327A (en) * 2013-02-27 2014-08-27 合肥杰事杰新材料股份有限公司 Polycarbonate/polyethylene glycol terephthalate alloy material and preparation method thereof

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