CN103740020A - Low-odor glass-fiber-enhanced AS (acrylonitrile-styrene) composition and preparation method thereof - Google Patents
Low-odor glass-fiber-enhanced AS (acrylonitrile-styrene) composition and preparation method thereof Download PDFInfo
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- 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
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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
- 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
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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
- 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
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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
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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
- 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
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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
- 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
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/625—Screws characterised by the ratio of the threaded length of the screw to its outside diameter [L/D ratio]
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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
- 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
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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
- 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
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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
- B29B9/02—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
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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
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
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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
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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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
- B29C2948/92885—Screw or gear
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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
- B29C2948/92895—Barrel or housing
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Abstract
The invention discloses a low-odor glass-fiber-enhanced AS (acrylonitrile-styrene) composition comprising the following components: 54.4-86.4% of AS resin, 10-30% of glass fiber, 1-5% of compatibilizer 1, 1-5% of compatibilizer 2, 1-5% of jellyfish grains and 0.1-3% of an assistant; the preparation method is as follows: mixing the AS resin, the compatibilizer 1, the compatibilizer 2 and the assistant in a high mixing machine for 1-3min; putting the mixture into a main feeding port of a double screw extruder, adding the glass fiber and the jellyfish grains from a side feeding port for melt extrusion and drying granulation to obtain the low-odor glass-fiber-enhanced AS (acrylonitrile-styrene) composition. The low-odor glass-fiber-enhanced AS (acrylonitrile-styrene) composition uses a maleic anhydride grafted AS blend as the compatibilizer 1 for enhancing the interface coupling effect of AS and the glass fiber, and uses a maleic anhydride grafted material as the compatibilizer 2 for greatly improving the compatibility of the composite, and uses the jellyfish grains, using high-melt foaming PP (polypropylene) as a carrier, as a stripping agent for effective removal of various volatile small molecules and organic compounds produced in the machining process, and the prepared low-odor glass-fiber-enhanced AS (acrylonitrile-styrene) composition has the characteristics of low odor, excellent mechanical properties and the like.
Description
Technical field
The present invention relates to modified plastics field, be specifically related to a kind of low smell glass and strengthen AS composition and method of making the same.
Background technology
Styrene-acrylonitrile resin (AS) is a kind of hard, transparent material.Vinylbenzene composition make AS hard, transparent and be easy to processing; Vinyl cyanide composition makes AS have chemical stability and thermostability.AS has the ability of very strong carry load, anti-chemical reaction ability, thermal deformation resistant characteristic and geometrical stability.Add glass fiber additives can gain in strength and thermal deformation resistant ability, reduce thermal expansivity.
But because glass enhancing AS matrix material smell is very large, limited it at automobile, the application in the fields such as household electrical appliances; Therefore, develop a kind of low smell glass and strengthen AS matrix material, there is great market.
It is many-sided that glass strengthens the large reason of AS matrix material smell, and first, AS resin, in manufacturing processed, exists more small molecular weight impurity, and smell is more unpleasant, and total carbon emitting is also higher; And, at glass fibre, strengthen in the preparation process of AS matrix material, tend to add the various compatilizers that add, these compatilizers tend to give off an unpleasant smell to some extent.Therefore, in order to make glass fibre strengthen AS matrix material, be more widely used, just must find the low smell glass fibre of preparation to strengthen the method for AS matrix material.
The basic skills that reduces smell comprises two kinds of chemical reaction and physical adsorptions.Chemical reaction method refers to the additive that some can react with scent of small-molecule substance, these additives and small molecules reaction, produce the another kind of compound that molecular chain is large, can not evaporate in general environment, thereby elimination smell, for example zinc ricinate reduces smell by chelating aldehyde ketone molecule.And for physical adsorption, theoretically, a large amount of cavities can be adsorbed the small molecules of any generation smell or other fugitive constituents, therefore may all produce effect to producing all respects of smell problem.Conventional physical absorbent comprises gac, silica gel, Attapulgite, clay mineral system, molecular sieve, zeolite, wollastonite, wilkinite etc. at present.
It is that resinogen material, stablizer, mineral filler and processing cracking produce that patent 200510026760.0 is mentioned smell, smell solution: nano zine oxide and nano titanium oxide.Eichenauer etc. have introduced the improved ABS alloy of a kind of smell molding in USP6297307, and by adding the mixture of a kind of zinc oxide, magnesium oxide and at least one epoxy compounds, this method has been improved smell.But these additives especially impact and have a great impact the mechanical property of AS alloy material
Aforesaid method to the smell problem of material by solution in various degree, yet aforesaid method is only the impact on smell for a certain component, reduce smell, but in fact material smell is the interactional result of various ingredients smell thereby add sorbent material.Therefore, find a kind of method that can solve various smell problems comprehensively and don't affect the mechanical property of material and seem particularly important.
Summary of the invention
In order to overcome the defect of above-mentioned prior art, primary and foremost purpose of the present invention is to provide a kind of low smell glass enhancing AS composition that has.
Another object of the present invention is to provide a kind of above-mentioned low smell glass to strengthen the preparation method of AS composition.
The present invention is achieved through the following technical solutions:
Low smell glass strengthens an AS composition, by weight percentage, comprises following component:
AS resin: 54.4-86.4%
Glass fibre: 10-30%
Compatilizer 1:1-5%
Compatilizer 2:1-5%
Jellyfish grain 1-5%
Auxiliary agent 0.1-3%;
Wherein, described jellyfish grain by weight percentage, comprises following component:
Polypropylene 1%-49%;
Water 50%-98%;
Mineral filler 0.1-5%;
Jellyfish grain of the present invention, is by polypropylene, the mixture that mineral filler and water form, this mixture water content>=50%, preferably 60-90%; Described polypropylene is high melt strength, propylene, its melt strength>=5cN; Wherein, melt strength test condition is: under the experimental temperature of 190 ℃, use the capillary die that length-to-diameter ratio is 10:1, mouthful mould is 24cm to the distance of roller, and plunger lowering speed is 0.10mm/s, and the acceleration of traction rollers is 5mm/s
2.
The preparation method of described jellyfish grain, comprises the steps:
(1) polypropylene is mixed by proportioning fully with mineral filler, in forcing machine, extrude strip polypropylene, then be chopped into polypropylene pre-expanded particles;
(2) take water as whipping agent, polypropylene pre-expanded particles is foamed, prepare the expanded polypropylene of high fondant-strength;
(3) expanded polypropylene of high fondant-strength and water are mixed to 5-10min in super mixer, prepare the jellyfish grain of different moisture content, emit stand-by.
The preferred 1-5% of jellyfish grain add-on of the present invention, adds too much jellyfish grain, and jellyfish grain can seethe with excitement in screw rod, thereby is unfavorable for producing.
Described AS resin is vinyl cyanide, cinnamic multipolymer, and wherein cinnamic weight percent content is 15%-50%.
Described glass fibre is one or more mixing of long glass fibres or short glass fiber.
Preferably, described long glass fibres is alkali free glass fibre, and diameter is 10-16 μ m; The length of described short glass fiber is 0.2-10mm, and diameter is 8-20 μ m.
The AS blend that described compatilizer 1 is maleic anhydride graft, percentage of grafting is 1-12%, it melts to refer to be 1-5g/10min(200 ℃, 5kg); Anhydride group has high chemical reactivity can be in extruding Blending Processes and the surface hydroxyl increased response interface coupled action of glass.
Described compatilizer 2 is the grafts PP-g-MAH of polypropylene and maleic anhydride, percentage of grafting is 0.3-1.2%, its melting index is 50-120g/10min(190 ℃, 2.16kg), maleic anhydride graft compatilizer is by introducing strong polar reaction group, make material there is high polarity and reactivity, can greatly improve the consistency of matrix material.
Matrix material of the present invention also comprises 0.1-3%(weight percent) auxiliary agent, described auxiliary agent is one or more the mixing in thermo-stabilizer, photostabilizer, processing aid, toner or pigment.Because the present invention is automotive trim AS matrix material, can to above-mentioned auxiliary agent, use separately according to the structure of different automotive trims, technical requirements etc., or compound use.Thermo-stabilizer can improve the heat aging property of material in processing and use procedure, conventionally can be selected from more than one in phenols, phosphorous acid esters, monothioester class.Photostabilizer can improve material light aging resisting property in use, can be hindered amines or UV light absorber.Processing aid is more than one in low molecule ester class stearic acid, metallic soap (Cast, Znst), stearic acid complex ester or amides (erucicamide).
Low smell glass of the present invention strengthens the preparation method of AS composition, comprises the following steps:
(1) take by weight percentage AS resin, compatilizer 1, compatilizer 2 and auxiliary agent and in high mixer, mix 1-3min; Mix, obtain Preblend;
(2) Preblend is placed in to the main spout of twin screw extruder, from side spout, adds glass fibre and jellyfish grain, melt extrude, granulating and drying, obtains.
The described condition melt extruding is: a district temperature 180-210 ℃, two district temperature 190-220 ℃, three district temperature 190-230 ℃, four district temperature 190-240 ℃, five district temperature 190-240 ℃, six district temperature 190-240 ℃, seven district temperature 190-240 ℃, eight district temperature 190-240 ℃, nine district temperature 190-240 ℃, engine speed 250-600 rev/min; The length-to-diameter ratio of twin screw extruder is 40:1.
The present invention compared with prior art, has following beneficial effect:
1) the present invention uses that to take the AS blend of maleic anhydride graft be compatilizer 1, can strengthen the interface coupled action of AS and glass, obviously improves the physical strength of AS composition; Take maleic anhydride grafts in addition as compatilizer 2, can greatly improve the consistency of matrix material and the dispersiveness of filler, the jellyfish grain that the high flux foaming PP of usining is carrier is as air lift agent, can effectively remove the various volatile small molecule and the organic compound that in the course of processing, produce, prepared AS matrix material has low smell, low characteristic of distributing, and can meet the requirement of automotive upholstery;
2) the jellyfish grain that the present invention uses is simple and easy to get, and preparation technology is simple, and cost is low, when can effectively remove smell, and don't affects the mechanical property of composition;
3) preparation method of the low smell glass enhancing AS composition that the present invention proposes is simple, take the reinforced mode of side feeding to add jellyfish grain, avoided adding problem fashionable and that cause the moisture jellyfish grain to volatilize too early from main feeding, can more effectively remove smell.
Embodiment
Below by embodiment, further illustrate the present invention, following examples are preferably embodiment of the present invention, but embodiments of the present invention are not subject to the restriction of following embodiment.
In following examples and comparative example, the processing conditions that forcing machine melt extrudes is as follows: a district temperature 180-210 ℃, two district temperature 190-220 ℃, three district temperature 190-230 ℃, four district temperature 190-240 ℃, five district temperature 190-240 ℃, six district temperature 190-240 ℃, seven district temperature 190-240 ℃, eight district temperature 190-240 ℃, nine district temperature 190-240 ℃, engine speed 250-600 rev/min; The length-to-diameter ratio of twin screw extruder is 40:1.
AS resin is selected from the NF2200 of Taiwan, and roving glass fiber is selected from the ER13-2000-988A of megalith group, and its Fibre diameter is 13 μ m, and linear density is 2000tex; Short glass fiber is selected from the ECS-13-4.5 series of Shenzhen Yataida company, and the length of its glass fibre is 4.5mm, and diameter is 13 μ m; Compatilizer 1 is selected from the KT-2 of Shenyang Ke Tong plastic cement company limited, and percentage of grafting is 1.3%, and it melts to refer to be 3.5g/10min(200 ℃, 5kg); Compatilizer 2 is selected from the KT-1 of Shenyang Ke Tong plastic cement company limited, and percentage of grafting is 0.8%, and melting index is 60g/10min(190 ℃, 2.16kg).
the preparation of jellyfish grain:
The high melt strength, propylene of different melt intensity is mixed by proportioning shown in table 1 fully with mineral filler, in forcing machine, extrude strip polypropylene, then be chopped into polypropylene pre-expanded particles; Take water as whipping agent, polypropylene pre-expanded particles is foamed, prepare the expanded polypropylene of high fondant-strength; The expanded polypropylene of high fondant-strength and water are mixed to 5-10min in super mixer, prepare the jellyfish grain of water content as shown in table 1, emit stand-by.
Each component concentration (weight percent) of table 1 jellyfish grain
embodiment 1-4
Low smell glass strengthens an AS composition, and its composition of raw materials is as shown in table 3, and its preparation method comprises the following steps:
Take by weight percentage AS resin, compatilizer 1, compatilizer 2 and auxiliary agent and in high mixer, mix 1-3min; Mix, obtain Preblend; Preblend is placed in to the main spout of twin screw extruder, from side spout, adds glass fibre and jellyfish grain, melt extrude granulating and drying.Measure its performance, smell and volatile matter, concrete data are listed in table 4.
comparative example 1
Low smell glass strengthens an AS composition, and its composition of raw materials is as shown in table 3, and its preparation method comprises the following steps:
Take by weight percentage each component (not adding jellyfish grain), in high mixer, mixed 1-3min; Mix, obtain Preblend; Preblend is placed in to twin screw extruder, melt extrudes, then granulation, cooling, obtains glass and strengthens AS composition.Measure its performance, smell and volatile matter, concrete data are listed in table 4.
comparative example 2
Low smell glass strengthens an AS composition, and its composition of raw materials is as shown in table 3, and its preparation method comprises the following steps:
Take by weight percentage each component (comprising jellyfish grain), in high mixer, mixed 1-3min; Mix, obtain Preblend; Preblend is placed in to twin screw extruder, melt extrudes, then granulation, cooling, obtains glass and strengthens AS composition.Measure its performance, smell and volatile matter, concrete data are listed in table 4.
comparative example 3
Low smell glass strengthens an AS composition, and its composition of raw materials is as shown in table 3, and its preparation method is with comparative example 1.
comparative example 4
Low smell glass strengthens an AS composition, and its composition of raw materials is as shown in table 3, and its preparation method is with embodiment 1.
The glass that embodiment and comparative example obtain strengthens AS composition and adopts following methods to test its correlated performance:
(1) measurement of odor standard:
The test of volatile gases in car and smell is comprised to people's sensory test and strict instrument test.This patent, by the VW ' s PV3900E of Volkswagen standard, adopts 1 ~ 6 grade of evaluation, and rank is higher, and smell is larger.Table 2, for the evaluation content that Volkswagen controls the standard P V3900 of smell in Automobile, is divided into 6 ranks.Its method is under certain experiment condition, part is placed in to the vessel of a sealing, the smell by professional with Olfactometry part.Subjective smell test experiments condition is as follows:
23 ℃ of a normal temperature, simulate normal riving condition
40 ℃ of b high temperature, simulation summer riving condition
C in 2h, under the condition that high temperature is 80 ℃, simulation extreme temperature and be exposed to the sun summer after condition in cab
Table 2 Volkswagen interior material smell judgement criteria
(2) mechanical property: test by ASTM standard.
The glass of table 3 embodiment and comparative example strengthens the composition of raw materials (by weight percentage) of AS composition
The glass of table 4 embodiment and comparative example strengthens the performance data of AS composition
By embodiment 1 and comparative example 1, embodiment 2 and comparative example 3, comparative example 2 can find out with comparative example 3 contrasts, the AS blend of maleic anhydride graft of take is compatilizer 1, can strengthen the interface coupled action of AS and glass, obviously improves the physical strength of AS composition; Take maleic anhydride grafts in addition as compatilizer 2, can greatly improve the consistency of matrix material and the dispersiveness of filler, the jellyfish grain that the high flux foaming PP of usining is carrier is as air lift agent, can effectively remove the various volatile small molecule and the organic compound that in the course of processing, produce, prepared AS matrix material has low smell, low characteristic of distributing, and can meet the requirement of automotive upholstery;
In addition, by embodiment 2 and comparative example 2 contrasts, can be found out, comparative example 2 takes main feeding feed way to add jellyfish grain, and embodiment 2 takes the reinforced mode of side feeding, the better excellence of its effect; This is because adding membership from main feeding causes the moisture jellyfish grain to vapor away too early, affects its effect.
Embodiment 4 compares with comparative example 4, and the water content of comparative example 4 jellyfish grains is lower, and it is poor that the glass of preparation strengthens AS composition smell, and volatile content is also higher.
Claims (12)
1. low smell glass strengthens an AS composition, it is characterized in that: by weight percentage, comprise following component:
AS resin: 54.4-86.4%
Glass fibre: 10-30%
Compatilizer 1:1-5%
Compatilizer 2:1-5%
Jellyfish grain 1-5%
Auxiliary agent 0.1-3%;
Wherein, described jellyfish grain by weight percentage, comprises following component:
Polypropylene 1%-49%;
Water 50%-98%;
Mineral filler 0.1-5%;
Described polypropylene is high melt strength, propylene, its melt strength >=5cN.
2. low smell glass according to claim 1 strengthens AS composition, it is characterized in that: described AS resin is vinyl cyanide, cinnamic multipolymer, and wherein cinnamic weight percent content is 15%-50%.
3. low smell glass according to claim 1 strengthens AS composition, it is characterized in that: described compatilizer 1 is the AS blend of maleic anhydride graft, and percentage of grafting is 1-12%, and its melting index is 1-5g/10min under 200 ℃, 5kg condition.
4. low smell glass according to claim 1 strengthens AS composition, it is characterized in that: the grafts that described compatilizer 2 is polypropylene and maleic anhydride, and percentage of grafting is 0.3-1.2%, its melting index is 50-120g/10min under 190 ℃, 2.16kg condition.
5. low smell glass according to claim 1 strengthens AS composition, it is characterized in that: described glass fibre is one or more mixing of long glass fibres or short glass fiber.
6. low smell glass according to claim 5 strengthens AS composition, it is characterized in that: described long glass fibres is alkali free glass fibre, and diameter is 10-16 μ m; The length of described short glass fiber is 0.2-10mm, and diameter is 8-20 μ m.
7. low smell glass according to claim 1 strengthens AS composition, it is characterized in that: described auxiliary agent is one or more the mixing in thermo-stabilizer, photostabilizer, processing aid, toner or pigment; Described thermo-stabilizer is more than one in phenols, phosphorous acid esters, monothioester class; Described photostabilizer is one or more the mixing in hindered amines or UV light absorber; Described processing aid is more than one in low molecule ester class stearic acid, metallic soap, stearic acid complex ester or amides.
8. low smell glass according to claim 1 strengthens AS composition, it is characterized in that: in described jellyfish grain, water content is 60-90%.
9. low smell glass according to claim 1 strengthens AS composition, it is characterized in that: described mineral filler is one or more the mixing in talcum powder, calcium carbonate or barium sulfate.
10. low smell glass according to claim 1 strengthens AS composition, it is characterized in that: the preparation method of described jellyfish grain, comprises the steps:
(1) polypropylene is mixed by proportioning fully with mineral filler, in forcing machine, extrude strip polypropylene, then be chopped into polypropylene pre-expanded particles;
(2) take water as whipping agent, polypropylene pre-expanded particles is foamed, prepare the expanded polypropylene of high fondant-strength;
(3) expanded polypropylene of high fondant-strength and water are mixed to 5-10min in super mixer, prepare the jellyfish grain of different moisture content, emit stand-by.
Low smell glass described in 11. claim 1 ~ 10 any one strengthens the preparation method of AS composition, it is characterized in that: comprise the following steps:
(1) take by weight percentage AS resin, compatilizer 1, compatilizer 2 and auxiliary agent and in high mixer, mix 1-3min; Mix, obtain Preblend;
(2) Preblend is placed in to the main spout of twin screw extruder, from side spout, adds glass fibre and jellyfish grain, melt extrude, granulating and drying, obtains.
12. low smell glasses according to claim 11 strengthen the preparation method of AS composition, it is characterized in that: described in the condition that melt extrudes be: a district temperature 180-210 ℃, two district temperature 190-220 ℃, three district temperature 190-230 ℃, four district temperature 190-240 ℃, five district temperature 190-240 ℃, six district temperature 190-240 ℃, seven district temperature 190-240 ℃, eight district temperature 190-240 ℃, nine district temperature 190-240 ℃, engine speed 250-600 rev/min; The length-to-diameter ratio of twin screw extruder is 40:1.
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