CN106009674A - High-viscosity flame-retardant silicon core pipe - Google Patents

Abstract

The invention discloses a high-viscosity flame-retardant silicon core pipe which is prepared from the following raw materials in parts by weight: 190-200 parts of n-decyl hydrocarbon, 65-75 parts of straight-chain C11 alkene, 190-200 parts of hydrogen-containing silicone oil, 15-20 parts of hydroxystearic acid, 4-6 parts of lithium hydroxide, 45-55 parts of PE carrier resin, 5-7 parts of color masterbatch, 60-70 parts of high-density polyethylene, 10-14 parts of eggshell, 0.8-1 part of lithium-based bentonite, 0.2-0.4 part of zinc naphthenate, 1-2 parts of polyurea and 0.3-0.4 part of sodium polyacrylate. In the silicon core pipe disclosed by the invention, due to the good cohesiveness between an inner layer and an outer layer, frequent falling is avoided; and moreover, the whole structure has a perfect flame-retardant effect, can protect cable and optical cable equipment to guarantee normal communication and thus deserves popularization.

Description

One has full-bodied flame retardant type silicone pipes

Technical field

The present invention relates to silicone pipes technical field, particularly relate to one and there is full-bodied flame retardant type silicone pipes.

Background technology

21 century is the epoch of information, and with fastest developing speed is information industry, and in the transmission of information, optical cable is most important logical Road, because only that optical cable can transmit substantial amounts of information with the fastest speed, also will not be disturbed, will not give away secrets, and China is the most several Year telecommunication cause develop the stages of historical development having had passed over from cable communication to optical cable rapidly, from civilian to military, from Phone all enters optical-fibre communications epoch, the biggest development having promoted plastic optical fiber cable jacket ducts to multimedia.Light Cable is typically buried in underground, for being effectively protected optical cable, generally adds a protection sleeve pipe outside optical cable, in cable run process In, the tubing used at first is steel pipe, pipe of cement, pvc pipe and double-wall corrugated pipe, and the problem using middle maximum is how to solve to wear The lubrication problem of inner-walls of duct in cable, typically uses the way of coating lubricant by aforementioned tubes, i.e. before wearing cable first when constructing The lubricant of liquid is coated in pipe material inner wall, but due to the effect of gravity, makes lubricant can not be uniformly distributed in pipe material inner wall, And the cable being also dried by leading portion when wearing cable takes away, therefore no matter select drawing method when wearing cable or blow afloat method, lubrication Problem all directly affects length and the speed wearing cable, uses these methods all to considerably increase the artificial and increase of resource expense. Silicone pipes friction factor is less, and pipe joint is few, quick construction, be not required to outer increasing protection of pipe, greatly reduces construction costs, due to Inwall silicon core layer is permanent solid lubrication oxidant layer, and frictional behaviour keeps constant, and cable can extract in pipe repeatedly, will not shell Falling, depart from, ageing-resistant service life was up to more than 50 years, so silicon core cable tube is widely used in a variety of applications.

Studying more person in silicone oil grease is methyl-silicone oil grease, due to the thickening poor-performing of dimethicone, The compatibility with organic material is the poorest, so, there is the problems such as greasy property is not good enough in methyl-silicone oil grease, limits its application Scope." alkyl modified silicon oil preparation of greases and performance study " Wen Zhongzhu state builds employing containing hydrogen silicone oil and linear alpha olefin Carry out hydrosilylation, prepare alkyl modified silicon oil, then itself and 12 hydroxy stearic acids are carried out saponification, prepare alkyl Modified silicon oil grease, result shows that, under close viscosity, the film strength of alkyl modified silicon oil is bigger than methyl-silicone oil, lubrication Property more preferable, the refractive index ratio methyl-silicone oil of alkyl modified silicon oil is high, closer to Dormant oils, fat and Organic substance, compatible with them Property more preferable, the transparency is higher, but sintering load is close with methyl-silicone oil, not raising, and weatherability, oxidative resistance and resistance to The characteristics such as solvent are general, reduce use field, in order to enable silicone oil grease well to be utilized in silicone pipes, this It is expanded modification by invention on its basis, makes the silicone pipes of preparation disclosure satisfy that the nowadays optical fiber requirement to silicone pipes, actively Accomplish to reduce cost, economize on resources and protect environment.

Summary of the invention

The object of the invention is contemplated to make up the defect of prior art, it is provided that one has full-bodied flame retardant type silicon core Pipe.

The present invention is achieved by the following technical solutions:

One has full-bodied flame retardant type silicone pipes, is made up of the raw material of following weight portion: positive last of the ten Heavenly stems hydrocarbon 190-200, straight Chain endecatylene hydrocarbon 65-75, containing hydrogen silicone oil 190-200, hydroxy stearic acid 15-20, Lithium hydrate 4-6, PE vector resin 45- 55, Masterbatch 5-7, high density polyethylene (HDPE) 60-70, eggshell 10-14, lithium bentonite 0.8-1, zinc naphthenate 0.2-0.4, polyureas 1-2, sodium polyacrylate 0.3-0.4.

Described one has full-bodied flame retardant type silicone pipes, is made up of following concrete steps:

(1) hydrocarbon in positive last of the ten Heavenly stems and straight chain endecatylene hydrocarbon are uniformly mixed, rise high-temperature to 120 DEG C, react 3-4h, the most slowly Adding containing hydrogen silicone oil and appropriate chloroplatinic acid, continuation liter high-temperature is to 130-140 DEG C, and stirring reaction 6-8h, reaction removes after terminating Remove low-boiling-point substance, obtain olefin-modified silicone oil standby；

(2) being added to after being cleaned up by eggshell surface crush in disintegrating machine, grinding to form particle diameter is 600-800 mesh powder, will Lithium bentonite is added in the ethanol of the 75% of equivalent weight, with 500-600 rev/min of stirring 10-20min, is subsequently adding above-mentioned Eggshell powder and polyureas, adjust rotating speed, with 1000-1500 rev/min of stirring 20-30min, then mixed material is added at a high speed from In heart spray dryer, standby after being spray-dried with 10000-12000 rev/min at 120 DEG C；

(3) modified silicon oil prepared by the step (1) of hydroxy stearic acid, formula ratio 1/3 is added in reactor, rises high-temperature extremely 80-90 DEG C, stirring makes hydroxy stearic acid all dissolve, then rises high-temperature to 90-110 DEG C, adds Lithium hydrate, saponification 1- 2h, reacts complete, liter high-temperature to 120-140 DEG C of dehydration, and is constantly rising the alkyl modified silicon oil that warming middle-JIAO adds 1/3 successively, When temperature is increased to 200-220 DEG C, stops heating, add remaining alkyl modified silicon oil, make temperature in the kettle drop to rapidly 120-140 DEG C, adding step (2) product prepared, stirring reaction naturally cools to discharging during ＜ 100 DEG C, grinds, deaerates, standby With；

(4) product, zinc naphthenate and sodium polyacrylate prepared by PE vector resin, step (3) are together added to mixed milling type parallel Carrying out pelletize in double screw extruder, temperature is 195-205 DEG C, makes silicone pipes master batch, then with Masterbatch, high-density polyethylene Alkene and remaining surplus materials synchronize extrusion claddings by three extruders, by Vacuum refrigerator and soak cooling water tank to squeezing Tubing after pressure is compound carries out cooling and shaping, and metering prints, and draws and crimp the most available.

The invention have the advantage that the present invention uses alhpa olefin and containing hydrogen silicone oil hydrosilylation to prepare copoly type alkyl Modified silicon oil, and oil based on it, carry out saponification with hydroxy stearic acid, and it is glossy that addition lithium soap is made for modified silicon Consistent lubricant, utilizes discarded eggshell resource not only to save cost, reduces the pollution to environment, and right in the preparation of silicone pipes Its modification makes it possess the good compatibility and dispersibility, improves the corrosion resistant of silicone pipes, waterproof, the effect of reduction cost, then Utilizing grease and PE vector resin etc. to make master batch, lubricity is good, thermostability is high, antifriction effect is high, not sticking, and is easy to Storage, saves space, then combines extrusioning shaping, the silicone pipes good forming effect of preparation with high density polyethylene (HDPE), and yield rate is high, Good stability, silicone pipes internal layer prepared by the present invention is good with outer bound, difficult drop-off, and entirety has the strongest fire-retardant Effect, it is possible to protection cable, fiber optic cable plant, it is ensured that communication properly functioning, is worthy to be popularized.

Detailed description of the invention

One has full-bodied flame retardant type silicone pipes, is made up of the raw material of following weight portion (kilogram): just hydrocarbon in the last of the ten Heavenly stems 190, straight chain endecatylene hydrocarbon 65, containing hydrogen silicone oil 190, hydroxy stearic acid 15, Lithium hydrate 4, PE vector resin 45, Masterbatch 5, High density polyethylene (HDPE) 60, eggshell 10, lithium bentonite 0.8, zinc naphthenate 0.2, polyureas 1, sodium polyacrylate 0.3.

Described one has full-bodied flame retardant type silicone pipes, is made up of following concrete steps:

(1) hydrocarbon in positive last of the ten Heavenly stems and straight chain endecatylene hydrocarbon are uniformly mixed, rise high-temperature to 120 DEG C, react 3h, the most slowly add Entering containing hydrogen silicone oil and appropriate chloroplatinic acid, continuation liter high-temperature is to 130 DEG C, and 6h is reacted in stirring, reacts removing low-boiling-point substance after terminating, Obtain olefin-modified silicone oil standby；

(2) being added to after being cleaned up by eggshell surface crush in disintegrating machine, grinding to form particle diameter is 600 mesh powder, by lithio Bentonite is added in the ethanol of the 75% of equivalent weight, with 500 revs/min stirring 10min, be subsequently adding above-mentioned eggshell powder and Polyureas, adjusts rotating speed, with 1000 revs/min of stirring 20min, is then added in Highspeedcentrifugingandsprayingdrier by mixed material, After being spray-dried with 10000 revs/min at 120 DEG C standby；

(3) modified silicon oil prepared by the step (1) of hydroxy stearic acid, formula ratio 1/3 is added in reactor, rises high-temperature to 80 DEG C, stirring makes hydroxy stearic acid all dissolve, then rises high-temperature to 90 DEG C, adds Lithium hydrate, saponification 1h, has reacted Finish, liter high-temperature to 120 DEG C of dehydrations, and constantly rising the alkyl modified silicon oil that warming middle-JIAO adds 1/3 successively, when temperature is increased to When 200 DEG C, stop heating, add remaining alkyl modified silicon oil, make temperature in the kettle drop to rapidly 120 DEG C, add step (2) The product of preparation, stirring reaction naturally cools to discharging during ＜ 100 DEG C, grinds, deaerates, standby；

(4) product, zinc naphthenate and sodium polyacrylate prepared by PE vector resin, step (3) are together added to mixed milling type parallel Carrying out pelletize in double screw extruder, temperature is 195 DEG C, makes silicone pipes master batch, then with Masterbatch, high density polyethylene (HDPE) with And remaining surplus materials synchronizes extrusion claddings by three extruders, by Vacuum refrigerator and to soak cooling water tank multiple to extruding Tubing after conjunction carries out cooling and shaping, and metering prints, and draws and crimp the most available.

The silicone pipes preparing embodiment carries out performance measurement, and result is as follows:

Friction factor: 0.13；Hot strength (MPa): 34；Elongation at break (%): 406；Breaking resistance (MPa): 5；Acid corrosion-resistant Property (40% concentrated sulphuric acid, 24h): without obvious corrosion phenomenon；Alkali corrosion resistance (40% sodium hydroxide, 24h): surface is existing without substantially corrosion As.

Claims (2)

1. one kind has full-bodied flame retardant type silicone pipes, it is characterised in that be made up of the raw material of following weight portion: the positive last of the ten Heavenly stems Hydrocarbon 190-200, straight chain endecatylene hydrocarbon 65-75, containing hydrogen silicone oil 190-200, hydroxy stearic acid 15-20, Lithium hydrate 4-6, PE Vector resin 45-55, Masterbatch 5-7, high density polyethylene (HDPE) 60-70, eggshell 10-14, lithium bentonite 0.8-1, zinc naphthenate 0.2-0.4, polyureas 1-2, sodium polyacrylate 0.3-0.4.

The most according to claim 1, one has full-bodied flame retardant type silicone pipes, it is characterised in that by following concrete steps Preparation is made:

(1) hydrocarbon in positive last of the ten Heavenly stems and straight chain endecatylene hydrocarbon are uniformly mixed, rise high-temperature to 120 DEG C, react 3-4h, the most slowly Adding containing hydrogen silicone oil and appropriate chloroplatinic acid, continuation liter high-temperature is to 130-140 DEG C, and stirring reaction 6-8h, reaction removes after terminating Remove low-boiling-point substance, obtain olefin-modified silicone oil standby；

(2) being added to after being cleaned up by eggshell surface crush in disintegrating machine, grinding to form particle diameter is 600-800 mesh powder, will Lithium bentonite is added in the ethanol of the 75% of equivalent weight, with 500-600 rev/min of stirring 10-20min, is subsequently adding above-mentioned Eggshell powder and polyureas, adjust rotating speed, with 1000-1500 rev/min of stirring 20-30min, then mixed material is added at a high speed from In heart spray dryer, standby after being spray-dried with 10000-12000 rev/min at 120 DEG C；

(3) modified silicon oil prepared by the step (1) of hydroxy stearic acid, formula ratio 1/3 is added in reactor, rises high-temperature extremely 80-90 DEG C, stirring makes hydroxy stearic acid all dissolve, then rises high-temperature to 90-110 DEG C, adds Lithium hydrate, saponification 1- 2h, reacts complete, liter high-temperature to 120-140 DEG C of dehydration, and is constantly rising the alkyl modified silicon oil that warming middle-JIAO adds 1/3 successively, When temperature is increased to 200-220 DEG C, stops heating, add remaining alkyl modified silicon oil, make temperature in the kettle drop to rapidly 120-140 DEG C, adding step (2) product prepared, stirring reaction naturally cools to discharging during ＜ 100 DEG C, grinds, deaerates, standby With；

(4) product, zinc naphthenate and sodium polyacrylate prepared by PE vector resin, step (3) are together added to mixed milling type parallel Carrying out pelletize in double screw extruder, temperature is 195-205 DEG C, makes silicone pipes master batch, then with Masterbatch, high-density polyethylene Alkene and remaining surplus materials synchronize extrusion claddings by three extruders, by Vacuum refrigerator and soak cooling water tank to squeezing Tubing after pressure is compound carries out cooling and shaping, and metering prints, and draws and crimp the most available.