CN103232685A - Low-mold-deposit high-surface-quality high-content glass fiber reinforced material and preparation method thereof - Google Patents
Low-mold-deposit high-surface-quality high-content glass fiber reinforced material and preparation method thereof Download PDFInfo
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- CN103232685A CN103232685A CN2013101540962A CN201310154096A CN103232685A CN 103232685 A CN103232685 A CN 103232685A CN 2013101540962 A CN2013101540962 A CN 2013101540962A CN 201310154096 A CN201310154096 A CN 201310154096A CN 103232685 A CN103232685 A CN 103232685A
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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
- B29C48/03—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
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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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Abstract
The invention discloses a low-mold-deposit high-surface-quality high-content glass fiber reinforced material and a preparation method thereof. The glass fiber reinforced material comprises the following components in parts by weight: 30-60 parts of polybutylene terephthalate, 30-60 parts of glass fiber, 0-10 parts of reactive toughener, 0.1-2 parts of nucleating agent, 0.2-0.6 part of antioxidant and 0.5-1 part of assistant. The preparation method of the glass fiber reinforced material comprises the following steps: weighing the components according to parts by weight; drying polyester resin at 90-110 DEG C for 4-6 hours; evenly mixing the polyester resin, toughener, antioxidant and assistant, adding the mixture into a double screw extruder, and adding alkali-free glass fibers downstream the extruder; and melting, compounding, extruding, cooling, drying and granulating. According to the invention, part of the glass fibers not treated by a wetting agent and the glass fibers treated by the wetting agent are compounded, and the reactive assistant is further added into the system; and thus, the product has favorable physical properties, thereby overcoming the defect that micromolecules can easily precipitate to influence the surface quality and generate mold deposit when high-content glass fibers are added.
Description
Technical field
The present invention relates to resin and preparation method thereof, especially relate to high-content glass fiber reinforced materials and the preparation method of a kind of low mold deposit, excellent surface quality.
Background technology
Polybutylene terephthalate (PBT) is a kind of increasingly extensive engineering plastics of using, and it has the mechanical property of comprehensive stability, hydrolysis characteristic preferably, and water absorbability is low than materials such as nylon, to electric and the size stability influence is minimum; Chemicals-resistant, solvent, weathering resistance are all better; Crystallization velocity is faster than materials such as PET, good fluidity, and processability is good; The dielectric strength height; Frictional coefficient is low, abrasion performance, and bending creep is good; Making glass easily strengthens and flame retardant products.
Be one of industrialized PBT modified product the earliest and strengthen PBT, fiber glass reinforced PBT is present most important enhancing PBT material, with respect to pure PBT, the introducing of glass has improved every physicals and the fatigue resistance of PBT, has reduced water-absorbent, creep and the molding shrinkage of material.
The glass addition of present most of fiber glass reinforced PBT product usually is between 10～30wt%.Along with more and more high in industry and the product design, this rigidity to material is had higher requirement, and can produce tangible mold deposit and hickie shape small-molecule substance at high glass fiber content as polyester material under the 〉=40wt% in the high-temperature injection process.The discovery that we are surprised, this white vaporific small molecules not merely are because the cyclic oligomer in the polyester causes, and with the content of glass direct relation are arranged.Because commercial glass fibre need be handled through soaking into bunchy, and treatment agent mainly comprises membrane-forming agent, coupling agent, lubricant and as the other types additive of static inhibitor.And in the glass fibre the definite treatment agent formula that uses all be specialized knowledge by the production firm of glass fibre usually, can't know usually.But find that by the retrieval to existing document application publication number is in the Chinese patent of CN101633567B, CN1914243B, the treating compound of glass normally is made up of the lower small-molecule substance of some boiling points.Polyester under high glass fiber content adds, often processing temperature needs corresponding the raising, and this tends to make that small molecules is easier can volatilize or decompose.On the other hand and since by the glass after handling can with polyester chain on functional group react, strengthen the bonding force at interface to improve the physical strength of material.Therefore how to provide the high-content fiber glass reinforced PBT of a kind of balance rerum natura and surface quality that very important practical significance is arranged.
Summary of the invention
The purpose of this patent is to overcome existing high glass fiber content enhancing PBT material can't provide low solution of touching dirt, limited the surface imperfection of PBT resin under the high-content glass adds, high-content glass fiber reinforced materials of a kind of low mold deposit, excellent surface quality and preparation method thereof is provided.
The objective of the invention is to be achieved through the following technical solutions:
First aspect the present invention relates to the high-content glass fiber reinforced materials of a kind of low mold deposit, excellent surface quality, comprises each component of following parts by weight:
Preferably, described glass fibre is the alkali-free short glass fiber.
Preferred volume, described glass fibre are glass fibre and the compound of eliminating the glass fibre of surface functional group or small molecules treatment agent.
Preferably, the glass fibre of described elimination surface functional group or small molecules treatment agent obtains by glass fibre being placed 500 ℃ of constant temperature handle 3～5h.
Preferably, the weight percent content that accounts for described compound gross weight of the glass fibre of described elimination surface functional group or small molecules treatment agent is 30～60%.
Preferably, described response type toughner is the toughner that contains glycidyl methacrylate, maleic anhydride, amino class functional group.
Preferably, described nucleator is aryl orthophosphate, sorbyl alcohol, Sorbitol dibenzal, carboxylic metallic salt, talcum powder, nano imvite, silicon-dioxide, mica, polyvinyl eyclohexane, polyvinyl pentamethylene, xylitol acetals, nano modification SiO
2, eutectic, rosin amide, branching peptamine, two ring dicarboxylic acid and the salt thereof of sylvic acid, sylvic acid and its esters, dehydroabietic acid, dehydroabietic acid and salt thereof, one or more the mixing in the phthalimide.
Preferably, described oxidation inhibitor is one or more in Hinered phenols antioxidant, phosphite ester kind antioxidant, the organosulfur oxidation inhibitor.
Preferably, described processing aid is one or more the mixing in lubricant, softening agent, releasing agent and the UV absorption agent.
Preferably, described lubricant is one or more the mixing in fatty acid amide, barium stearate, Magnesium Stearate, paraffin, polyethylene wax, pentaerythritol stearate, ethylene bis stearic acid amide, ethylene-vinyl acetate copolymer, the ethylene-acrylic acid copolymer; Described softening agent is one or more the mixing in phthalic acid, Tritolyl Phosphate, the epoxy soybean ester; Described releasing agent is silicone oil; Described UV absorption agent is one or more the mixing in benzotriazole compound, hindered amine compound, the salicyclic acid derivatives class.
Second aspect the invention still further relates to a kind of method for preparing the high-content glass fiber reinforced materials of above-mentioned low mold deposit, excellent surface quality, may further comprise the steps:
A, get the raw materials ready by described component and parts by weight thereof;
B, with described PBT resin at 120～140 ℃ of following dry 4～6h, after then described PBT resin, nucleator, response type toughner, oxidation inhibitor and processing aid high-speed stirring fully being mixed, send in the twin screw extruder, middle and lower reaches at twin screw extruder add described alkali-free short glass fiber, conveying, shearing and mixing by screw rod at last, material melting, compound, again through extrude, tie rod, subcooling, pelletizing, obtain the high-content glass fiber reinforced materials of described low mold deposit, excellent surface quality.
Preferably, the feeding rotating speed control of described twin screw extruder is at 350～450rpm, each subregion temperature remains on 200～245 ℃, screw speed is 350～450rpm, vacuum tightness in the vacuum pump control forcing machine on the twin screw extruder is 0.06～0.09MPa, more preferably, vacuum degree control is at 0.08～0.09Mpa.
Compared with prior art, the beneficial effect that the present invention has is: by glass being handled the effective small molecules problem of having controlled under high glass fiber content adds, the high glass fiber content enhancing PBT material that makes can reduce mold deposit very effectively and separate out phenomenon with white fogmeter face, the moulded products surface is good, having favorable mechanical performance energy simultaneously, enough is that demand high strength and the product of taking into account surface appearance provide support.Therefore has boundless application prospect in fields such as household electrical appliances, consumption electronic product, automobiles.
Embodiment
The present invention is described in detail below in conjunction with specific embodiment.Following examples will help those skilled in the art further to understand the present invention, but not limit the present invention in any form.Should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.
Below embodiment provided by the invention is elaborated.
In following examples and the Comparative Examples, the PBT resin is to be formed by 1,4-butyleneglycol and terephthalic acid condensation polymerization, and limiting viscosity is 0.69～1.0dL/g, available from city of Kunshan encyclopaedia plastics company limited.
Glass fibre is alkali-free short glass fiber HP3786 (diameter 11 μ m), available from PPG company.Glass after the processing is namely eliminated the glass of surface functional group or small molecules treatment agent, is to obtain in 4 hours by this glass being placed 500 degree retort furnaces or electric furnace constant temperature handle.
In the toughner, ethylene-acrylate-glycidyl methacrylate random terpolymer (product is called Elvaloy PTW) is available from DuPont company; Ethylene-methyl acrylate-Ji glycidyl acrylate terpolymer (product is called Lotader AX8900) is available from Arkema company; The ethylene-vinyl acetate copolymer; The random copolymer of ethylene-acrylate (product is called 29MA03) is available from Arkema company.
In the oxidation inhibitor, (product is called oxidation inhibitor 246, antioxidant 264, antioxidant 1010, antioxidant 1076 and oxidation inhibitor 168 to the resistance phenolic antioxidant, available from the CIBA company limited that refines), phosphite ester kind antioxidant (trioctyl phosphate, available from Shanghai Ying Ting Industrial Co., Ltd.), organosulfur oxidation inhibitor (the two stearyl alcohol esters of thio-2 acid, West Asia reagent).
In the processing aid, releasing agent polyethylene wax and releasing agent paraffin (emergence worker company limited is opened up in the Guangzhou), lubricant pentaerythritol stearate (PETS) (the friendly auxiliary agent chemical industry in Nanjing limited liability company).
Nucleator XT386 (CIBA refine company limited).
Embodiment 1
The low mold deposit of present embodiment, the high-content glass fiber reinforced materials of excellent surface quality, the component that comprises and the parts by weight of each component are as shown in table 1, and its preparation method is as follows:
(1) takes by weighing each raw material according to the weight part shown in the table 1;
(2) the PBT resin is following dry 5 hours at 120～140 ℃;
(3) PBT resin, nucleator, toughner Elvaloy PTW, oxidation inhibitor and processing aid are mixed be placed in the twin screw extruder, add the glass fibre compound in the forcing machine downstream, conveying, shearing and mixing by screw rod at last, material melting, compound, again through extrude, tie rod, subcooling, pelletizing obtain product.
The feeding rotating speed control of described twin screw extruder is at 350～450rpm, and each subregion temperature remains on 200～245 ℃, and screw speed is 350～450rpm, and the vacuum tightness in the vacuum pump control forcing machine on the twin screw extruder is 0.06～0.09MPa.
Embodiment 2
The low mold deposit of present embodiment, the high-content glass fiber reinforced materials of excellent surface quality, the component that comprises and the parts by weight of each component are as shown in table 1, and its preparation method is as follows:
(1) takes by weighing each raw material according to the weight part shown in the table 1;
(2) the PBT resin is following dry 5 hours at 120～140 ℃;
(3) PBT resin, toughner, oxidation inhibitor, nucleator and processing aid are mixed be placed in the twin screw extruder, add the glass fibre compound in the forcing machine downstream, conveying, shearing and mixing by screw rod at last, material melting, compound, again through extrude, tie rod, subcooling, pelletizing obtain product.
The feeding rotating speed control of described twin screw extruder is at 350～450rpm, and each subregion temperature remains on 200～245 ℃, and screw speed is 350～450rpm, and the vacuum tightness in the vacuum pump control forcing machine on the twin screw extruder is 0.06～0.09MPa.
Embodiment 3
The low mold deposit of present embodiment, the high-content glass fiber reinforced materials of excellent surface quality, the component that comprises and the parts by weight of each component are as shown in table 1, and its preparation method is as follows:
(1) takes by weighing each raw material according to the weight part shown in the table 1;
(2) the PBT resin is following dry 5 hours at 120～140 ℃;
(3) PBT resin, toughner, oxidation inhibitor and auxiliary agent are mixed be placed in the twin screw extruder, add alkali free glass fibre HP3786 in the forcing machine downstream, conveying, shearing and mixing by screw rod at last, material melting, compound, again through extrude, tie rod, subcooling, pelletizing obtain product.
The feeding rotating speed control of described twin screw extruder is at 350～450rpm, and each subregion temperature remains on 200～245 ℃, and screw speed is 350～450rpm, and the vacuum tightness in the vacuum pump control forcing machine on the twin screw extruder is 0.06～0.09MPa.
Embodiment 4
The low mold deposit of present embodiment, the high-content glass fiber reinforced materials of excellent surface quality, the component that comprises and the parts by weight of each component are as shown in table 1, and its preparation method is as follows:
(1) takes by weighing each raw material according to the weight part shown in the table 1;
(2) the PBT resin is following dry 5 hours at 120～140 ℃;
(3) PBT resin, toughner, oxidation inhibitor, nucleator and processing aid mixed be placed in the twin screw extruder, add the glass fibre compound in the forcing machine downstream, by fusion, mixing, extrude, cool off, dry, pelletizing obtains product.
The feeding rotating speed control of described twin screw extruder is at 350～450rpm, and each subregion temperature remains on 200～245 ℃, and screw speed is 350～450rpm, and the vacuum tightness in the vacuum pump control forcing machine on the twin screw extruder is 0.06～0.09MPa.
Embodiment 5
The low mold deposit of present embodiment, the high-content glass fiber reinforced materials of excellent surface quality, the component that comprises and the parts by weight of each component are as shown in table 1, and its preparation method is as follows:
(1) takes by weighing each raw material according to the weight part shown in the table 1;
(2) the PBT resin is following dry 5 hours at 120～140 ℃;
(3) PBT resin, toughner, oxidation inhibitor and auxiliary agent are mixed be placed in the twin screw extruder, add the glass fibre compound in the forcing machine downstream, conveying, shearing and mixing by screw rod at last, material melting, compound, again through extrude, tie rod, subcooling, pelletizing obtain product.
The feeding rotating speed control of described twin screw extruder is at 350～450rpm, and each subregion temperature remains on 200～245 ℃, and screw speed is 350～450rpm, and the vacuum tightness in the vacuum pump control forcing machine on the twin screw extruder is 0.06～0.09MPa.
Embodiment 6
The low mold deposit of present embodiment, the high-content glass fiber reinforced materials of excellent surface quality, the component that comprises and the parts by weight of each component are as shown in table 1, and its preparation method is as follows:
(1) takes by weighing each raw material according to the weight part shown in the table 1;
(2) the PBT resin is following dry 5 hours at 120～140 ℃;
(3) PBT resin, toughner, oxidation inhibitor and auxiliary agent are mixed be placed in the twin screw extruder, add the glass fibre compound in the forcing machine downstream, conveying, shearing and mixing by screw rod at last, material melting, compound, again through extrude, tie rod, subcooling, pelletizing obtain product.
The feeding rotating speed control of described twin screw extruder is at 350～450rpm, and each subregion temperature remains on 200～245 ℃, and screw speed is 350～450rpm, and the vacuum tightness in the vacuum pump control forcing machine on the twin screw extruder is 0.06～0.09MPa.
Embodiment 7
The low mold deposit of present embodiment, the high-content glass fiber reinforced materials of excellent surface quality, the component that comprises and the parts by weight of each component are as shown in table 1, and its preparation method is as follows:
(1) takes by weighing each raw material according to the weight part shown in the table 1;
(2) the PBT resin is following dry 5 hours at 120～140 ℃;
(3) PBT resin, toughner, oxidation inhibitor and auxiliary agent are mixed be placed in the twin screw extruder, add the glass fibre compound in the forcing machine downstream, conveying, shearing and mixing by screw rod at last, material melting, compound, again through extrude, tie rod, subcooling, pelletizing obtain product.
The feeding rotating speed control of described twin screw extruder is at 350～450rpm, and each subregion temperature remains on 200～245 ℃, and screw speed is 350～450rpm, and the vacuum tightness in the vacuum pump control forcing machine on the twin screw extruder is 0.06～0.09MPa.
Embodiment 8
The low mold deposit of present embodiment, the high-content glass fiber reinforced materials of excellent surface quality, the component that comprises and the parts by weight of each component are as shown in table 1, and its preparation method is as follows:
(1) takes by weighing each raw material according to the weight part shown in the table 1;
(2) the PBT resin is following dry 5 hours at 120～140 ℃;
(3) PBT resin, toughner, oxidation inhibitor and auxiliary agent are mixed be placed in the twin screw extruder, add the glass fibre compound in the forcing machine downstream, conveying, shearing and mixing by screw rod at last, material melting, compound, again through extrude, tie rod, subcooling, pelletizing obtain product.
The feeding rotating speed control of described twin screw extruder is at 350～450rpm, and each subregion temperature remains on 200～245 ℃, and screw speed is 350～450rpm, and the vacuum tightness in the vacuum pump control forcing machine on the twin screw extruder is 0.06～0.09MPa.
Comparative Examples 1
The glass fiber reinforced materials of this Comparative Examples, the component that comprises and the parts by weight of each component are as shown in table 1, and its preparation method is as follows:
(1) takes by weighing each raw material according to the weight part shown in the table 1;
(2) the PBT resin is following dry 5 hours at 120～140 ℃;
(3) PBT resin, oxidation inhibitor, nucleator and processing aid are mixed be placed in the twin screw extruder, add alkali free glass fibre HP3786 in the forcing machine downstream, conveying, shearing and mixing by screw rod at last, material melting, compound, again through extrude, tie rod, subcooling, pelletizing obtain product.
The feeding rotating speed control of described twin screw extruder is at 350～450rpm, and each subregion temperature remains on 200～245 ℃, and screw speed is 350～450rpm, and the vacuum tightness in the vacuum pump control forcing machine on the twin screw extruder is 0.06～0.09MPa.
Comparative Examples 2
The glass fiber reinforced materials of this Comparative Examples, the component that comprises and the parts by weight of each component are as shown in table 1, and its preparation method is as follows:
(1) takes by weighing each raw material according to the weight part shown in the table 1;
(2) the PBT resin is following dry 5 hours at 120～140 ℃;
(3) PBT resin, oxidation inhibitor, nucleator and processing aid are mixed be placed in the twin screw extruder, add alkali free glass fibre in the forcing machine downstream, conveying, shearing and mixing by screw rod at last, material melting, compound, again through extrude, tie rod, subcooling, pelletizing obtain product.
The feeding rotating speed control of described twin screw extruder is at 350～450rpm, and each subregion temperature remains on 200～245 ℃, and screw speed is 350～450rpm, and the vacuum tightness in the vacuum pump control forcing machine on the twin screw extruder is 0.06～0.09MPa.
Comparative Examples 3
The glass fiber reinforced materials of this Comparative Examples, the component that comprises and the parts by weight of each component are as shown in table 1, and its preparation method is as follows:
(1) takes by weighing each raw material according to the weight part shown in the table 1;
(2) the PBT resin is following dry 5 hours at 120～140 ℃;
(3) PBT resin, toughner, oxidation inhibitor and auxiliary agent are mixed be placed in the twin screw extruder, add alkali free glass fibre in the forcing machine downstream, conveying, shearing and mixing by screw rod at last, material melting, compound, again through extrude, tie rod, subcooling, pelletizing obtain product.
The feeding rotating speed control of described twin screw extruder is at 350～450rpm, and each subregion temperature remains on 200～245 ℃, and screw speed is 350～450rpm, and the vacuum tightness in the vacuum pump control forcing machine on the twin screw extruder is 0.06～0.09MPa.
Embodiment 9, performance test
The glass-fiber reinforced polyester composite material of embodiment 1～8 and Comparative Examples 1～3 preparation is injection molded into the standard batten of test usefulness by the iso standard size, and injection temperature is 80 ℃ of 280 ℃, mould temperature, and the injection moulding back 23 ℃ of stops that finish detected its performance after 24 hours.In addition, 280 ℃ of high tabula rasas that stop 5 minutes injection moulding 3mm, 160mm * 90mm are observed model surface condition and scoring, and 1 is divided into the poorlyest, and serious white mist phenomenon takes place; 5 are divided into preferably, do not have white mist phenomenon.Simultaneously, continuously injection moulding 50 moulds are observed the high light face mould dirt of mould situation, and scoring, and 1 is divided into the poorlyest, a large amount of mold deposits occur; 5 are divided into preferably, do not observe obvious mold deposit.The result is as shown in table 2.
Each glass-fiber reinforced polyester composite material The performance test results of table 2
From the test result of table 2 as can be seen, (1) Comparative Examples 1 and 2 results show that under the low glass fiber content, the white mist in surface and mold deposit phenomenon are not obvious, and the next meeting of high glass fiber content is comparatively obvious; (2) comparing result of embodiment and Comparative Examples 1 shows, glass by the micromolecular glass of composite elimination and normal processing, the surface appearance of material and minimizing mold deposit, but find from embodiment 3 and 4 contrasts, can be risky to the material property meeting after the glass adding proportion when after treatment surpasses total glass 60%.(3) response type toughner is favourable to surface appearance and the minimizing mold deposit of material, and non-response type toughner does not have help to the mold deposit minimizing of material.
Therefore, by the high-content fiber glass reinforced PBT matrix material that the present invention makes, have good surface effect can for demand more the product of high strength and surface quality the material support is provided, on the other hand, the minimizing of mold deposit also is conducive to follow-up forming process, prolongs the mold cleaning cycle.Has boundless application prospect in fields such as household electrical appliances, consumption electronic product, automobiles.
More than specific embodiments of the invention are described.It will be appreciated that the present invention is not limited to above-mentioned specific implementations, those skilled in the art can make various distortion or modification within the scope of the claims, and this does not influence flesh and blood of the present invention.
Claims (12)
1. the high-content glass fiber reinforced materials of a low mold deposit, excellent surface quality is characterized in that, comprises each component of following parts by weight:
2. the high-content glass fiber reinforced materials of low mold deposit according to claim 1, excellent surface quality is characterized in that, described glass fibre is the alkali-free short glass fiber.
3. the high-content glass fiber reinforced materials of low mold deposit according to claim 2, excellent surface quality is characterized in that, described glass fibre is glass fibre and the compound of eliminating the glass fibre of surface functional group or small molecules treatment agent.
4. the high-content glass fiber reinforced materials of low mold deposit according to claim 3, excellent surface quality, it is characterized in that the weight percent content that accounts for described compound gross weight of the glass fibre of described elimination surface functional group or small molecules treatment agent is 30～60%.
5. the high-content glass fiber reinforced materials of low mold deposit according to claim 3, excellent surface quality, it is characterized in that the glass fibre of described elimination surface functional group or small molecules treatment agent obtains by glass fibre being placed 500 ℃ of constant temperature handle 3～5h.
6. the high-content glass fiber reinforced materials of low mold deposit according to claim 1, excellent surface quality is characterized in that, described response type toughner is the toughner that contains glycidyl methacrylate, maleic anhydride or amino class functional group.
7. the high-content glass fiber reinforced materials of low mold deposit according to claim 1, excellent surface quality, it is characterized in that described nucleator is aryl orthophosphate, sorbyl alcohol, Sorbitol dibenzal, carboxylic metallic salt, talcum powder, nano imvite, silicon-dioxide, mica, polyvinyl eyclohexane, polyvinyl pentamethylene, xylitol acetals, nano modification SiO
2, eutectic, rosin amide, branching peptamine, two ring dicarboxylic acid and the salt thereof of sylvic acid, sylvic acid and its esters, dehydroabietic acid, dehydroabietic acid and salt thereof, one or more the mixing in the phthalimide.
8. the high-content glass fiber reinforced materials of low mold deposit according to claim 1, excellent surface quality is characterized in that, described oxidation inhibitor is one or more the mixing in Hinered phenols antioxidant, phosphite ester kind antioxidant, the organosulfur oxidation inhibitor.
9. the high-content glass fiber reinforced materials of low mold deposit according to claim 1, excellent surface quality is characterized in that, described processing aid is one or more the mixing in lubricant, softening agent, releasing agent and the UV absorption agent.
10. the high-content glass fiber reinforced materials of low mold deposit according to claim 9, excellent surface quality, it is characterized in that described lubricant is one or more the mixing in fatty acid amide, barium stearate, Magnesium Stearate, paraffin, polyethylene wax, pentaerythritol stearate, ethylene bis stearic acid amide, ethylene-vinyl acetate copolymer, the ethylene-acrylic acid copolymer; Described softening agent is one or more the mixing in phthalic acid, Tritolyl Phosphate, the epoxy soybean ester; Described releasing agent is silicone oil; Described UV absorption agent is one or more the mixing in benzotriazole compound, hindered amine compound, the salicyclic acid derivatives class.
11. a method for preparing the high-content glass fiber reinforced materials of low mold deposit as claimed in claim 1, excellent surface quality is characterized in that, may further comprise the steps:
A, get the raw materials ready by described component and parts by weight thereof;
B, with described PBT resin at 120～140 ℃ of following dry 4～6h, after then described PBT resin, nucleator, response type toughner, oxidation inhibitor and processing aid high-speed stirring fully being mixed, send in the twin screw extruder, middle and lower reaches at twin screw extruder add described alkali-free short glass fiber, conveying, shearing and mixing by screw rod at last, material melting, compound, again through extrude, tie rod, subcooling, pelletizing, obtain the high-content glass fiber reinforced materials of described low mold deposit, excellent surface quality.
12. preparation method according to claim 11, it is characterized in that, the feeding rotating speed control of described twin screw extruder is at 350～450rpm, each subregion temperature remains on 200～245 ℃, screw speed is 350～450rpm, and the vacuum tightness in the vacuum pump control forcing machine on the twin screw extruder is 0.06～0.09MPa.
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| CN103589123A (en) * | 2013-10-24 | 2014-02-19 | 合肥会通新材料有限公司 | Glass fiber reinforced polybutylene terephthalate composite material and preparation method thereof |
| CN103642179A (en) * | 2013-12-10 | 2014-03-19 | 绵阳市盛宇新材料有限公司 | Polybutylene terephthalate/glass fiber composite and preparation method thereof |
| CN104151789A (en) * | 2014-07-16 | 2014-11-19 | 厦门金越电器有限公司 | Low-warping high voltage resistance PBT modified material and preparation method thereof |
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| CN103589123A (en) * | 2013-10-24 | 2014-02-19 | 合肥会通新材料有限公司 | Glass fiber reinforced polybutylene terephthalate composite material and preparation method thereof |
| CN103642179A (en) * | 2013-12-10 | 2014-03-19 | 绵阳市盛宇新材料有限公司 | Polybutylene terephthalate/glass fiber composite and preparation method thereof |
| CN103642179B (en) * | 2013-12-10 | 2015-09-30 | 绵阳市盛宇新材料有限公司 | Polybutylene terephthalate/glass fiber compound material and preparation method thereof |
| TWI628226B (en) * | 2014-01-31 | 2018-07-01 | 日商胜技高分子股份有限公司 | Polybutylene terephthalate resin composition |
| CN105934480A (en) * | 2014-01-31 | 2016-09-07 | 胜技高分子株式会社 | Polybutylene terephthalate resin composition |
| US9663652B2 (en) | 2014-01-31 | 2017-05-30 | Wintech Polymer Ltd. | Polybutylene terephthalate resin composition |
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| CN106832824B (en) * | 2017-03-20 | 2020-10-09 | 四川中物材料股份有限公司 | Method for preparing high-toughness high-strength PET/glass fiber composite material and product thereof |
| CN110317450A (en) * | 2018-03-30 | 2019-10-11 | 杭州本松新材料技术股份有限公司 | A kind of flame-retardant polyamide composition |
| CN110317450B (en) * | 2018-03-30 | 2022-05-24 | 杭州本松新材料技术股份有限公司 | Flame-retardant polyamide composition |
| CN112266489A (en) * | 2020-07-27 | 2021-01-26 | 苏州市新广益电子有限公司 | Environment-friendly and energy-saving PBT (polybutylene terephthalate) film production process |
| CN112266489B (en) * | 2020-07-27 | 2023-05-05 | 苏州市新广益电子股份有限公司 | Environment-friendly energy-saving PBT film production process |
| CN112029277A (en) * | 2020-08-31 | 2020-12-04 | 金旸（厦门）新材料科技有限公司 | Low-mold-fouling halogen-free flame-retardant reinforced high-temperature nylon material and preparation method thereof |
| CN115197551A (en) * | 2022-08-10 | 2022-10-18 | 金发科技股份有限公司 | Low-mold-scale halogen-free flame-retardant PBT (polybutylene terephthalate) composite material as well as preparation method and application thereof |
| CN115197551B (en) * | 2022-08-10 | 2023-08-22 | 金发科技股份有限公司 | Low-modulus halogen-free flame-retardant PBT composite material, and preparation method and application thereof |
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