CN104140649B - A kind of hydrolysis strengthens pbt material - Google Patents
A kind of hydrolysis strengthens pbt material Download PDFInfo
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- CN104140649B CN104140649B CN201410340806.5A CN201410340806A CN104140649B CN 104140649 B CN104140649 B CN 104140649B CN 201410340806 A CN201410340806 A CN 201410340806A CN 104140649 B CN104140649 B CN 104140649B
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Abstract
The invention discloses a kind of hydrolysis and strengthen pbt material, it is made up of the raw material of following weight parts: polybutylene terephthalate (PBT) 80-90, polycarbodiimide crosslinkers 0.8-1, butylated hydroxy anisole 0.1-0.4, calcium naphthenate 1-2, the two stearic amide 1-2 of vinyl, propenyl 2-3, triacetin 2-3, hydroxy propyl methacrylate 1-2, copper chloride 1-2, maleic anhydride 1-2, dipotassium hydrogen phosphate 1-2, linseed oil 1-2, nano-carbon powder 3-4, processing aid 1-2, pbt mechanical property of materials excellence of the present invention, good stability, resistance is high, combination property is superior, the polycarbodiimide crosslinkers adding makes finished product have good resistance to water, has widened the scope of application of material.
Description
Technical field
The present invention relates generally to Material Field, relates in particular to a kind of hydrolysis and strengthens pbt material.
Background technology
Polybutylene terephthalate (PBT), weatherability, water absorption rate are low, are only 0.1%, still keep various physical property (comprising electrical property) in wet environment, electrical insulating property, but volume resistance, dielectric loss are large. Heat-resisting water, bases, acids, oils but be subject to halogenated hydrocarbon and corrode, hydrolytic resistance is poor, crystallization rapidly under low temperature, good forming ability. Shortcoming is that notched Izod impact strength is low, and molding shrinkage is large. Adopt glass fibre to strengthen or inorganic fill modification therefore most of, its hot strength, bending strength can be enhanced about more than once, and heat distortion temperature also significantly improves. Can long-term work at 140 DEG C, after glass strengthens, goods vertical, horizontal shrinkage factor is inconsistent, easily makes goods generation warpage.
PBT crystallization rate is fast, and optimum processing method is injection moulding, and additive method is extruded in addition, blowing, coating and various secondary operations moulding, needs predryingly before moulding, and moisture will be down to 0.02%.
PBT(strengthens, modified PBT) be mainly used in automobile, electronic apparatus, industrial machinery and polymer alloy, blend industry. As in the distributor as in automobile, body part, ignitor coil skeleton, insulating lid, gas extraction system parts, motor cycle ignitor, electronic apparatus industry as the deflection coil of television set, kinescope and potentiometer support, sound accompaniment output transformer skeleton, adapter skeleton, switch connector, electric fan, refrigerator, motor for washer end cap, axle sleeve.
Also have in addition Transport Machinery part, sewing machine and textile machinery part, casing for clock and watch, lens barrel, electric iron cover, mercury lampshade, oven parts, electric tool part, housing.
Summary of the invention
The object of the invention is just to provide a kind of hydrolysis and strengthens pbt material.
The present invention is achieved by the following technical solutions:
A kind of hydrolysis strengthens pbt material, and it is made up of the raw material of following weight parts:
Polybutylene terephthalate (PBT) 80-90, polycarbodiimide crosslinkers 0.8-1, butylated hydroxy anisole 0.1-0.4, calcium naphthenate 1-2, vinyl two stearic amide 1-2, propenyl 2-3, triacetin 2-3, hydroxy propyl methacrylate 1-2, copper chloride 1-2, maleic anhydride 1-2, dipotassium hydrogen phosphate 1-2, linseed oil 1-2, nano-carbon powder 3-4, processing aid 1-2;
Described processing aid is made up of the raw material of following weight parts:
Tricalcium silicate 1-2, tamarind gum 2-3, silicone master batch 1-2, di-n-octyl sebacate 2-3, oyster shell powder 2-3, ammonium tungstate 0.1-0.3, oxine 0.2-0.4, dimethyl silicone polymer 1-2;
Oyster shell powder, silicone master batch are mixed, after stirring, add di-n-octyl sebacate, at 50-60 DEG C, heating mixes 2-4 minute, adds dimethyl silicone polymer, and 200-300 rev/min of dispersed with stirring 7-10 minute, obtains premix;
By tricalcium silicate and ammonium tungstate mixing and ball milling, add above-mentioned premix and the each raw material of residue, stir, obtain described processing aid.
Hydrolysis strengthens a preparation method for pbt material, it is characterized in that comprising the following steps:
Triacetin, propenyl are mixed, after stirring, add polycarbodiimide crosslinkers, 200-300 rev/min of dispersed with stirring 10-15 minute;
Copper chloride, nano-carbon powder are mixed, after being uniformly mixed, add hydroxy propyl methacrylate, calcium naphthenate, stir;
Above-mentioned each raw material after treatment is mixed with the each raw material of residue, and high-speed stirred is even, sends into double screw extruder and extrudes, and through tie rod, cooling, pelletizing, dry processing, obtains described hydrolysis enhancing pbt material.
Advantage of the present invention is:
Pbt mechanical property of materials excellence of the present invention, good stability, resistance is high, and combination property is superior; The polycarbodiimide crosslinkers adding makes finished product have good resistance to water, has widened the scope of application of material.
Detailed description of the invention
Embodiment 1
A kind of hydrolysis strengthens pbt material, it by following weight parts (kilogram) raw material form:
Polybutylene terephthalate (PBT) 90, polycarbodiimide crosslinkers 0.8, butylated hydroxy anisole 0.4, calcium naphthenate 2, the two stearic amides 1 of vinyl, propenyl 3, triacetin 2, hydroxy propyl methacrylate 1, copper chloride 2, maleic anhydride 1, dipotassium hydrogen phosphate 2, linseed oil 1, nano-carbon powder 3, processing aid 2;
Described processing aid is made up of the raw material of following weight parts:
Tricalcium silicate 2, tamarind gum 3, silicone master batch 1, di-n-octyl sebacate 3, oyster shell powder 3, ammonium tungstate 0.3, oxine 0.4, dimethyl silicone polymer 2;
Oyster shell powder, silicone master batch are mixed, after stirring, add di-n-octyl sebacate, at 60 DEG C, heating mixes 2 minutes, adds dimethyl silicone polymer, and 300 revs/min of dispersed with stirring 10 minutes, obtain premix;
By tricalcium silicate and ammonium tungstate mixing and ball milling, add above-mentioned premix and the each raw material of residue, stir, obtain described processing aid.
Hydrolysis strengthens a preparation method for pbt material, it is characterized in that comprising the following steps:
Triacetin, propenyl are mixed, after stirring, add polycarbodiimide crosslinkers, 300 revs/min of dispersed with stirring 15 minutes;
Copper chloride, nano-carbon powder are mixed, after being uniformly mixed, add hydroxy propyl methacrylate, calcium naphthenate, stir;
Above-mentioned each raw material after treatment is mixed with the each raw material of residue, and high-speed stirred is even, sends into double screw extruder and extrudes, and through tie rod, cooling, pelletizing, dry processing, obtains described hydrolysis enhancing pbt material.
In this implementation method, the specific performance of the hydrolysis of gained enhancing pbt material is:
Hot strength is 94MPa;
Notched Izod impact strength (KJ/m2）9.97；
Vertical combustion (1.6mm) FV-O.
Claims (2)
1. hydrolysis strengthens a pbt material, it is characterized in that what it was made up of the raw material of following weight parts:
Polybutylene terephthalate (PBT) 80-90, polycarbodiimide crosslinkers 0.8-1, butylated hydroxy anisole 0.1-0.4, calcium naphthenate 1-2, vinyl two stearic amide 1-2, propenyl 2-3, triacetin 2-3, hydroxy propyl methacrylate 1-2, copper chloride 1-2, maleic anhydride 1-2, dipotassium hydrogen phosphate 1-2, linseed oil 1-2, nano-carbon powder 3-4, processing aid 1-2;
Described processing aid is made up of the raw material of following weight parts:
Tricalcium silicate 1-2, tamarind gum 2-3, silicone master batch 1-2, di-n-octyl sebacate 2-3, oyster shell powder 2-3, ammonium tungstate 0.1-0.3, oxine 0.2-0.4, dimethyl silicone polymer 1-2;
Oyster shell powder, silicone master batch are mixed, after stirring, add di-n-octyl sebacate, at 50-60 DEG C, heating mixes 2-4 minute, adds dimethyl silicone polymer, and 200-300 rev/min of dispersed with stirring 7-10 minute, obtains premix;
By tricalcium silicate and ammonium tungstate mixing and ball milling, add above-mentioned premix and the each raw material of residue, stir, obtain described processing aid.
2. hydrolysis as claimed in claim 1 strengthens a preparation method for pbt material, it is characterized in that comprising the following steps:
Triacetin, propenyl are mixed, after stirring, add polycarbodiimide crosslinkers, 200-300 rev/min of dispersed with stirring 10-15 minute;
Copper chloride, nano-carbon powder are mixed, after being uniformly mixed, add hydroxy propyl methacrylate, calcium naphthenate, stir;
Above-mentioned each raw material after treatment is mixed with the each raw material of residue, and high-speed stirred is even, sends into double screw extruder and extrudes, and through tie rod, cooling, pelletizing, dry processing, obtains described hydrolysis enhancing pbt material.
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| CN104140649B true CN104140649B (en) | 2016-05-18 |
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| CN106589276B (en) * | 2016-12-19 | 2018-11-16 | 常州百佳年代薄膜科技股份有限公司 | Polycarbodiimide metal complex and its preparation method and application |
| CN112646331B (en) * | 2020-12-15 | 2023-06-16 | 江苏金发科技新材料有限公司 | Polybutylene terephthalate mixture and preparation method thereof |
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| US5574083A (en) * | 1993-06-11 | 1996-11-12 | Rohm And Haas Company | Aromatic polycarbodiimide crosslinkers |
| JP5089133B2 (en) * | 2005-10-31 | 2012-12-05 | 株式会社クレハ | Method for producing aliphatic polyester composition |
| CN1990546B (en) * | 2005-12-30 | 2010-12-08 | 上海杰事杰新材料股份有限公司 | Punching-resistant reinforced polyester blending engineering material and method for preparing same |
| CN101525413B (en) * | 2008-03-04 | 2012-01-18 | 东丽纤维研究所（中国）有限公司 | Method for producing hydrolysis-resistant polyester composition |
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