CN104140649A - Hydrolysis-resistant reinforced pbt material - Google Patents

Abstract

The invention discloses a hydrolysis-resistant reinforced pbt material. The hydrolysis-resistant reinforced pbt material comprises, by weight, 80-90 parts of polybutylene terephthalate, 0.8-1 part of polycarbodiimide cross-linking agents, 0.1-0.4 part of butylated hydroxyanisole, 1-2 parts of calcium naphthenate, 1-2 parts of hydrocarbon wax, 2-3 parts of allyl alcohol, 2-3 parts of glycerol triacetate, 1-2 parts of hydroxypropyl methacrylate, 1-2 parts of copper chloride, 1-2 parts of cis-butenedioic anhydride, 1-2 parts of dipotassium hydrogen phosphate, 1-2 parts of linseed oil, 3-4 parts of nanocarbon powder and 1-2 parts of processing agents. The hydrolysis-resistant reinforced pbt material is good in mechanical performance, good in stability, high in resistance and good in comprehensive performance, the added polycarbodiimide cross-linking agents enable a finished product to have good water resistance, and the use range of the material is widened.

Description

A kind of hydrolysis strengthens pbt material

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, weathering resistance, water-intake 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 halon 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.Therefore most of, adopt glass fibre to strengthen or inorganic fill modification, its tensile strength, flexural strength can be enhanced about more than once, and heat-drawn wire also significantly improves.Can long term operation at 140 ℃, after glass strengthens, goods vertical, horizontal shrinking percentage is inconsistent, easily makes goods generation warpage.

PBT crystallization velocity is fast, and optimum working method is injection moulding, and additive method is extruded in addition, blowing, coating and various secondary processing moulding, needs predryingly before moulding, and moisture content 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 divider as in automobile, body part, ignitor coil skeleton, insulating cover, exhaust system component, motor cycle ignitor, electronic apparatus industry as the deflector coil of televisor, picture tube 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, roaster parts, power tool part, bell 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:

Hydrolysis strengthens a pbt material, and it is comprised of the raw material of following weight parts:

Polybutylene terephthalate 80-90, polycarbodiimide crosslinkers 0.8-1, butylated hydroxy anisole 0.1-0.4, calcium naphthenate 1-2, vinyl two stearic amide 1-2, vinylcarbinol 2-3, Vanay 2-3, Rocryl 410 1-2, cupric chloride 1-2, MALEIC ANHYDRIDE 1-2, dipotassium hydrogen phosphate 1-2, oleum lini 1-2, nano-carbon powder 3-4, processing aid 1-2;

Described processing aid is comprised of the raw material of following weight parts:

Tricalcium silicate 1-2, tamarind seed gum 2-3, silicone master batch 1-2, dioctyl sebacate 2-3, oyster shell powder 2-3, ammonium tungstate 0.1-0.3, oxine 0.2-0.4, polydimethylsiloxane 1-2;

Oyster shell powder, silicone master batch are mixed, after stirring, add dioctyl sebacate, at 50-60 ℃, heating mixes 2-4 minute, adds polydimethylsiloxane, and 200-300 rev/min of dispersed with stirring 7-10 minute, obtains Preblend;

By tricalcium silicate and ammonium tungstate mixing and ball milling, add above-mentioned Preblend and 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:

Vanay, vinylcarbinol are mixed, after stirring, add polycarbodiimide crosslinkers, 200-300 rev/min of dispersed with stirring 10-15 minute;

Cupric chloride, nano-carbon powder are mixed, after being uniformly mixed, add Rocryl 410, calcium naphthenate, stir;

Each raw material after above-mentioned processing is mixed with each raw material of residue, and high-speed stirring is even, sends into twin screw extruder and extrudes, and through tie rod, cooling, pelletizing, drying treatment, obtains described hydrolysis enhancing pbt material.

Advantage of the present invention is:

The pbt mechanical property of materials of the present invention is excellent, good stability, and resistance is high, and over-all properties is superior; The polycarbodiimide crosslinkers adding makes finished product have good water tolerance, has widened the use range of material.

Embodiment

Embodiment 1

Hydrolysis strengthens a pbt material, it by following weight parts (kilogram) raw material form:

Polybutylene terephthalate 90, polycarbodiimide crosslinkers 0.8, butylated hydroxy anisole 0.4, calcium naphthenate 2, the two stearic amides 1 of vinyl, vinylcarbinol 3, Vanay 2, Rocryl 410 1, cupric chloride 2, MALEIC ANHYDRIDE 1, dipotassium hydrogen phosphate 2, oleum lini 1, nano-carbon powder 3, processing aid 2;

Described processing aid is comprised of the raw material of following weight parts:

Tricalcium silicate 2, tamarind seed gum 3, silicone master batch 1, dioctyl sebacate 3, oyster shell powder 3, ammonium tungstate 0.3, oxine 0.4, polydimethylsiloxane 2;

Oyster shell powder, silicone master batch are mixed, after stirring, add dioctyl sebacate, at 60 ℃, heating mixes 2 minutes, adds polydimethylsiloxane, and 300 revs/min of dispersed with stirring 10 minutes, obtain Preblend;

By tricalcium silicate and ammonium tungstate mixing and ball milling, add above-mentioned Preblend and 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:

Vanay, vinylcarbinol are mixed, after stirring, add polycarbodiimide crosslinkers, 300 revs/min of dispersed with stirring 15 minutes;

Cupric chloride, nano-carbon powder are mixed, after being uniformly mixed, add Rocryl 410, calcium naphthenate, stir;

Each raw material after above-mentioned processing is mixed with each raw material of residue, and high-speed stirring is even, sends into twin screw extruder and extrudes, and through tie rod, cooling, pelletizing, drying treatment, obtains described hydrolysis enhancing pbt material.

In this implementation method, the specific performance of the hydrolysis of gained enhancing pbt material is:

Tensile strength is 94MPa;

Notched Izod impact strength (KJ/m ²) 9.97;

Vertical combustion (1.6mm) FV-O.

Claims (2)

1. hydrolysis strengthens a pbt material, it is characterized in that what it was comprised of the raw material of following weight parts:

Polybutylene terephthalate 80-90, polycarbodiimide crosslinkers 0.8-1, butylated hydroxy anisole 0.1-0.4, calcium naphthenate 1-2, vinyl two stearic amide 1-2, vinylcarbinol 2-3, Vanay 2-3, Rocryl 410 1-2, cupric chloride 1-2, MALEIC ANHYDRIDE 1-2, dipotassium hydrogen phosphate 1-2, oleum lini 1-2, nano-carbon powder 3-4, processing aid 1-2;

Described processing aid is comprised of the raw material of following weight parts:

Tricalcium silicate 1-2, tamarind seed gum 2-3, silicone master batch 1-2, dioctyl sebacate 2-3, oyster shell powder 2-3, ammonium tungstate 0.1-0.3, oxine 0.2-0.4, polydimethylsiloxane 1-2;

Oyster shell powder, silicone master batch are mixed, after stirring, add dioctyl sebacate, at 50-60 ℃, heating mixes 2-4 minute, adds polydimethylsiloxane, and 200-300 rev/min of dispersed with stirring 7-10 minute, obtains Preblend;

By tricalcium silicate and ammonium tungstate mixing and ball milling, add above-mentioned Preblend and 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:

Vanay, vinylcarbinol are mixed, after stirring, add polycarbodiimide crosslinkers, 200-300 rev/min of dispersed with stirring 10-15 minute;

Cupric chloride, nano-carbon powder are mixed, after being uniformly mixed, add Rocryl 410, calcium naphthenate, stir;

Each raw material after above-mentioned processing is mixed with each raw material of residue, and high-speed stirring is even, sends into twin screw extruder and extrudes, and through tie rod, cooling, pelletizing, drying treatment, obtains described hydrolysis enhancing pbt material.