CN105111661A - Novel low-temperature crack resistant data line sheath material and manufacturing method thereof - Google Patents

Abstract

The invention discloses a novel low-temperature crack resistant data line sheath material. The novel low-temperature crack resistant data line sheath material comprises, by weight, 100-104 parts of SEBS, 65-68 parts of paroline, 29-31 parts of polypropylene, 21-23 parts of maleic anhydride grafted polypropylene, 3-4 parts of antioxygen B215, 81-83 parts of magnesium hydroxide, 4.3-5 parts of expanded graphite, 1.6-1.7 parts of a silane coupling agent A-171, 8-9 parts of absolute ethyl alcohol, 2-3 parts of thiodipropionic acid bi-octadecyl alcohol ester, 12-14 parts of montmorillonoid, 2-3 parts of calcium stearate, 2-3 parts of liquid silicone rubber, 5-6 parts of a cold-resistant plasticizer DOA and 7.6-9 parts of crack-resistant fibers. According to the novel low-temperature crack resistant data line sheath material, a blend of the paroline modified SEBS and the polypropylene is used as a matrix, the cold-resistant plasticizer DOA is added to be matched with the blend material, the obtained sheath material is smooth in surface, not prone to ballooning, efficient, retardant to flame and capable of resisting cracks at low temperature and ensures the using safety in winter, and the service life is prolonged.

Description

Jacket for data lines material of a kind of novel low temperature resistant cracking resistance and preparation method thereof

Technical field

The present invention relates to technical field of polymer materials, particularly relate to jacket for data lines material of a kind of novel low temperature resistant cracking resistance and preparation method thereof.

Background technology

At present, the electric wire sheath material of domestic electronic enterprises widespread use, Insulation Material and electronic plug material more than 90% adopt PVC.But from 1 day July in 2006, European Union just promulgated a decree and has forbidden halogen-containing flame retardant, and the electric equipment products of some objectionable impurities such as heavy metal enters European market, and the outlet of this measure to China's electric equipment products creates and have a strong impact on.European Union is while its ban of issue, and abroad some companies have started to promote its product to China's electrical equipment industry industry energetically, attempt to seize China market, develop halogen-free flame-retardant environment-friendly electric wire significant undoubtedly under this form.

Styrene ethylene butadiene-styrene block copolymer (SEBS) is a kind of broad-spectrum thermoplastic elastomer, polypropylene (PP) is used to carry out modification, a kind of thermoplastic elastomer TPE having the characteristic of plastics and rubber concurrently that can make, because TPE has snappiness, high strength, low density, the features such as easy processing, have good insulativity simultaneously, resistant of high or low temperature, fatigue resistance, good hand touch, free from extraneous odour, become the preferred material that electric wire field substitutes PVC, but the halogen-free flameproof of TPE is a difficult problem, how to prepare the important topic that the high flame retarded thermoplastic's elastomerics of over-all properties has become its Application Areas.

Summary of the invention

The object of the invention is exactly the defect in order to make up prior art, provides jacket for data lines material of a kind of novel low temperature resistant cracking resistance and preparation method thereof.

The present invention is achieved by the following technical solutions:

A jacket for data lines material for novel low temperature resistant cracking resistance, is made up of the raw material of following weight part: SEBS100-104, paraffin oil 65-68, polypropylene 29-31, polypropylene grafted maleic anhydride 21-23, oxidation inhibitor B2153-4, magnesium hydroxide 81-83, expanded graphite 4.3-5, silane coupling A-1711.6-1.7, dehydrated alcohol 8-9, thio-2 acid two octadecyl 2-3, polynite 12-14, calcium stearate 2-3, liquid silica gel 2-3, cold resistant plasticizer DOA5-6, anti-crack fiber 7.6-9.

The jacket for data lines material of described a kind of novel low temperature resistant cracking resistance, be made up of following concrete steps:

(1) by magnesium hydroxide in air dry oven, at 110 DEG C dry 4 hours for subsequent use; Silane coupling A-171 is added dehydrated alcohol, be sprayed on dry magnesium hydroxide after stirring 30 minutes with the speed of 500 revs/min, then send in high-speed mixer, add expanded graphite, with the speed of 2000 revs/min, stir after 30 minutes at normal temperatures, be warming up to 60 DEG C, continue stirring to take out for 30 minutes, more namely drying obtains compound flame retardant in 3 hours at 110 DEG C;

(2) SEBS, polypropylene, polypropylene grafted maleic anhydride are put into air dry oven respectively, at 80 DEG C dry 4 hours for subsequent use; Dried SEBS is mixed with paraffin oil, puts into high-speed mixer, be uniformly mixed 20 minutes with the speed of 1000 revs/min, leave standstill 12 hours after taking out, treat that SEBS is fully swelling in paraffin oil, obtain oiliness SEBS; Polypropylene, polypropylene grafted maleic anhydride being added two roll temperature is in the open mill of 170 DEG C, oiliness SEBS, oxidation inhibitor B215 is added after plasticating 10 minutes, continue mixing 20 minutes, evenly rear slice to be mixed, put into air dry oven after pulverizing dry 2 hours, namely obtain mixed resin;

(3) anti-crack fiber, polynite are put into respectively air dry oven with the oven dry 2 hours of 80 DEG C, after cooling, anti-crack fiber was pulverized 200 mesh sieves, and mixed with polynite, put into ball mill afterwards, add calcium stearate, ball milling was poured out after 2 hours, sent in twin screw extruder, continue to add liquid silica gel, control extrusion temperature 120 DEG C, the speed that screw speed is 100 revs/min stirs extruding pelletization after 20 minutes, coldly goes rear pulverizing, cross 200 mu of sieves, obtain mixture;

(4) compound flame retardant, mixed resin, mixture and all the other remaining components are put into high-speed mixer, it is 170 DEG C in temperature, discharging after mixing 20 minutes under the speed of 500 revs/min, material is fed in vulcanizing press, hot pressing at 180 DEG C of temperature, then room temperature is colded pressing, is ground into particle after slice, finally sends in twin screw extruder by particle, extruding pelletization, dries 4 hours and get final product under 80 DEG C of conditions.

Advantage of the present invention is: the present invention adds the magnesium hydroxide of surface modification, in hydrophobic effect, composite with expanded graphite, there is good fire-resistant synergistic effect, carbon yield and the oxygen index of system can be improved, can the effectively release of trap heat and the conduction of inflammable gas, reduce the amount of being fuming; Can obviously reduce particle agglomeration effect simultaneously, can disperse more even in base-material, improve the consistency with base-material interface, improve viscosity and the processing characteristics of compound, improve the mechanical property of compound.

The present invention with paraffin oil modified SEBS and polyacrylic blend for matrix, scientific and reasonable composition proportion, add cold resistant plasticizer DOA to coordinate with mixed resin,, not easily there is bulging, not only there is efficient flame retardant resistance in obtained sheath material smooth surface, and using at low ambient temperatures can cracking resistance, ensure the security used under the winter environment of cold, cracking resistance is low temperature resistant, extends work-ing life.

Embodiment

A jacket for data lines material for novel low temperature resistant cracking resistance, is made up of the raw material of following weight part (kilogram): the two octadecyl 2 of SEBS100, paraffin oil 65, polypropylene 29, polypropylene grafted maleic anhydride 21, oxidation inhibitor B2153, magnesium hydroxide 81, expanded graphite 4.3, silane coupling A-1711.6, dehydrated alcohol 8, thio-2 acid, polynite 12, calcium stearate 2, liquid silica gel 2, cold resistant plasticizer DOA5, anti-crack fiber 7.6.

The jacket for data lines material of described a kind of novel low temperature resistant cracking resistance, be made up of following concrete steps:

(1) by magnesium hydroxide in air dry oven, at 110 DEG C dry 4 hours for subsequent use; Silane coupling A-171 is added dehydrated alcohol, be sprayed on dry magnesium hydroxide after stirring 30 minutes with the speed of 500 revs/min, then send in high-speed mixer, add expanded graphite, with the speed of 2000 revs/min, stir after 30 minutes at normal temperatures, be warming up to 60 DEG C, continue stirring to take out for 30 minutes, more namely drying obtains compound flame retardant in 3 hours at 110 DEG C;

(2) SEBS, polypropylene, polypropylene grafted maleic anhydride are put into air dry oven respectively, at 80 DEG C dry 4 hours for subsequent use; Dried SEBS is mixed with paraffin oil, puts into high-speed mixer, be uniformly mixed 20 minutes with the speed of 1000 revs/min, leave standstill 12 hours after taking out, treat that SEBS is fully swelling in paraffin oil, obtain oiliness SEBS; Polypropylene, polypropylene grafted maleic anhydride being added two roll temperature is in the open mill of 170 DEG C, oiliness SEBS, oxidation inhibitor B215 is added after plasticating 10 minutes, continue mixing 20 minutes, evenly rear slice to be mixed, put into air dry oven after pulverizing dry 2 hours, namely obtain mixed resin;

(3) anti-crack fiber, polynite are put into respectively air dry oven with the oven dry 2 hours of 80 DEG C, after cooling, anti-crack fiber was pulverized 200 mesh sieves, and mixed with polynite, put into ball mill afterwards, add calcium stearate, ball milling was poured out after 2 hours, sent in twin screw extruder, continue to add liquid silica gel, control extrusion temperature 120 DEG C, the speed that screw speed is 100 revs/min stirs extruding pelletization after 20 minutes, coldly goes rear pulverizing, cross 200 mu of sieves, obtain mixture;

(4) compound flame retardant, mixed resin, mixture and all the other remaining components are put into high-speed mixer, it is 170 DEG C in temperature, discharging after mixing 20 minutes under the speed of 500 revs/min, material is fed in vulcanizing press, hot pressing at 180 DEG C of temperature, then room temperature is colded pressing, is ground into particle after slice, finally sends in twin screw extruder by particle, extruding pelletization, dries 4 hours and get final product under 80 DEG C of conditions.

The jacket for data lines material that the present invention produces, after testing, reaches following index: flame retardant properties reaches UL-94V-0 level, oxygen index >=30.8%, tensile strength >=14.3MPa, fracture extension rate >=253%.

Claims (2)

1. the jacket for data lines material of a novel low temperature resistant cracking resistance, it is characterized in that, be made up of the raw material of following weight part: SEBS100-104, paraffin oil 65-68, polypropylene 29-31, polypropylene grafted maleic anhydride 21-23, oxidation inhibitor B2153-4, magnesium hydroxide 81-83, expanded graphite 4.3-5, silane coupling A-1711.6-1.7, dehydrated alcohol 8-9, thio-2 acid two octadecyl 2-3, polynite 12-14, calcium stearate 2-3, liquid silica gel 2-3, cold resistant plasticizer DOA5-6, anti-crack fiber 7.6-9.

2. the jacket for data lines material of a kind of novel low temperature resistant cracking resistance according to claim 1, is characterized in that, be made up of following concrete steps:

(1) by magnesium hydroxide in air dry oven, at 110 DEG C dry 4 hours for subsequent use; Silane coupling A-171 is added dehydrated alcohol, be sprayed on dry magnesium hydroxide after stirring 30 minutes with the speed of 500 revs/min, then send in high-speed mixer, add expanded graphite, with the speed of 2000 revs/min, stir after 30 minutes at normal temperatures, be warming up to 60 DEG C, continue stirring to take out for 30 minutes, more namely drying obtains compound flame retardant in 3 hours at 110 DEG C;

(2) SEBS, polypropylene, polypropylene grafted maleic anhydride are put into air dry oven respectively, at 80 DEG C dry 4 hours for subsequent use; Dried SEBS is mixed with paraffin oil, puts into high-speed mixer, be uniformly mixed 20 minutes with the speed of 1000 revs/min, leave standstill 12 hours after taking out, treat that SEBS is fully swelling in paraffin oil, obtain oiliness SEBS; Polypropylene, polypropylene grafted maleic anhydride being added two roll temperature is in the open mill of 170 DEG C, oiliness SEBS, oxidation inhibitor B215 is added after plasticating 10 minutes, continue mixing 20 minutes, evenly rear slice to be mixed, put into air dry oven after pulverizing dry 2 hours, namely obtain mixed resin;

(3) anti-crack fiber, polynite are put into respectively air dry oven with the oven dry 2 hours of 80 DEG C, after cooling, anti-crack fiber was pulverized 200 mesh sieves, and mixed with polynite, put into ball mill afterwards, add calcium stearate, ball milling was poured out after 2 hours, sent in twin screw extruder, continue to add liquid silica gel, control extrusion temperature 120 DEG C, the speed that screw speed is 100 revs/min stirs extruding pelletization after 20 minutes, coldly goes rear pulverizing, cross 200 mu of sieves, obtain mixture;

(4) compound flame retardant, mixed resin, mixture and all the other remaining components are put into high-speed mixer, it is 170 DEG C in temperature, discharging after mixing 20 minutes under the speed of 500 revs/min, material is fed in vulcanizing press, hot pressing at 180 DEG C of temperature, then room temperature is colded pressing, is ground into particle after slice, finally sends in twin screw extruder by particle, extruding pelletization, dries 4 hours and get final product under 80 DEG C of conditions.