CN107540983A - A kind of polyvinyl chloride electrical casing pipe of high heat distortion temperature and preparation method thereof - Google Patents
A kind of polyvinyl chloride electrical casing pipe of high heat distortion temperature and preparation method thereof Download PDFInfo
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- CN107540983A CN107540983A CN201710691866.5A CN201710691866A CN107540983A CN 107540983 A CN107540983 A CN 107540983A CN 201710691866 A CN201710691866 A CN 201710691866A CN 107540983 A CN107540983 A CN 107540983A
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Abstract
The present invention relates to polyvinyl chloride electrical casing pipe of a kind of high heat distortion temperature and preparation method thereof, the polyvinyl chloride electrical casing pipe is made up of the component of following mass fraction：100 parts of polyvinyl chloride resin powder；5~25 parts of calcium carbonate；3~5 parts of heat stabilizer；7~11 parts of impact modifier；0.5~1.3 part of lubricant；0.5~2.5 part of titanium dioxide；10~30 parts of heat-proof modifier；Wherein, the heat-proof modifier is the copolymer of methyl methacrylate and glutarimide, and the molecular weight of the heat-proof modifier is about 60000~90000, its particle diameter≤170 μm.The present invention makes the dimension card index of polyvinyl chloride electrical casing pipe improve to more than 90 DEG C by adding the heat-proof modifier of specified quantitative, particle diameter and molecular weight, the other each physical and mechanical property indexs of tubing are kept to keep being basically unchanged simultaneously, gained tubing properties reach JG 3,050 1998《Insulating electrical casing pipe and accessory for building》Standard, can meet the needs of constructing under hot environment, suitable for the reinforced concrete construction of large volume.
Description
Technical field
The present invention relates to plastic conduit technical field, in particular it relates to a kind of polyvinyl chloride electrician of high heat distortion temperature
Sleeve pipe and preparation method thereof.
Background technology
Polyvinyl chloride（PVC）[No. CAS：900-86-2] be one kind by VCM（VCM）By radical polymerization and
Into general-purpose plastics, it can meet the boardy product and soft goods of different purposes by adding appropriate auxiliary agent and being made.PVC has strong
Spend it is high, corrosion-resistant, fire retardant, insulation, it is transparent and with the peculiar property such as various plastic additive compatibilities in extensive range are good.Cause
And it is widely used in the fields such as industry, agricultural, building, commodity, packaging；Its primary articles include pipe part, door-window section bar,
Sheet material and sheet material, wire insulation skin, medical supplies, film, sealing strip etc..
The widely used polyvinyl chloride electrical casing pipe good insulation preformance of building field, anti-current breakdown voltage are up to 25KV；
Fire protecting performance is good, has flame retardancy, from fiery moment self-extinguishment；Moistureproof, acid and alkali-resistance, will not get rusty as metal sleeve, and acidproof,
Alkaline-resisting, oil resistant etc. stores up more advantages.But in high temperature environments, as during the reinforced concrete construction of large volume, concrete setting
When inside heat release accumulation temperature reach 80~85 degree, met or exceeded the heat distortion temperature of general polyvinyl chloride, this is straight
It is that polyvinyl chloride electrical casing pipe deforms under the pressure and exothermic temperature collective effect of concrete to connect consequence, causes follow-up to wear electricity
Line work can not be smoothed out.
Therefore, necessary a kind of polyvinyl chloride electrical casing pipe with high heat distortion temperature of research and development.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of polyvinyl chloride electrician of high heat distortion temperature
Sleeve pipe, the dimension card index of polyvinyl chloride electrical casing pipe provided by the invention reach more than 90 DEG C, while keep the other each things of tubing
Reason mechanical performance index keeps being basically unchanged, and can meet the needs of constructing under hot environment, suitable for the reinforced concrete of large volume
Soil application work.
Another object of the present invention is to the preparation method for the polyvinyl chloride electrical casing pipe for providing above-mentioned high heat distortion temperature.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of polyvinyl chloride electrical casing pipe of high heat distortion temperature, the polyvinyl chloride electrical casing pipe by following mass fraction group
It is grouped into：
100 parts of polyvinyl chloride resin powder；
5~25 parts of calcium carbonate；
3~5 parts of heat stabilizer；
7~11 parts of impact modifier；
0.5~1.3 part of lubricant；
0.5~2.5 part of titanium dioxide；
10~30 parts of heat-proof modifier；
Wherein, the heat-proof modifier is the copolymer of methyl methacrylate and glutarimide, the heat-proof modifier
Molecular weight is 60000~90000, and its particle diameter is≤170 μm.
Can not be smoothly in the high temperature particular surroundings such as reinforced concrete construction of large volume to solve polyvinyl chloride electrical casing pipe
The middle present situation used, the present invention add heat-proof modifier first by being modified to polyvinyl chloride in polyvinyl chloride resin powder
The copolymer of base methyl acrylate and glutarimide improves tubing to improve the dimension card index of polyvinyl chloride electrical casing pipe
Heat distortion temperature is to solve the problems, such as that polyvinyl chloride electrical casing pipe can not be used under hot environment.In addition, methyl methacrylate
Make it that there is preferable compatibility with polyvinyl chloride with substantial amounts of carbonyl functional group in the copolymer of glutarimide, be advantageous to thing
Material disperses and keeps the original mechanical performance of polyvinyl chloride electrical casing pipe.
In the present invention, the molecular weight of heat-proof modifier and addition to the performance impact of polyvinyl chloride electrical casing pipe compared with
Greatly；The molecular weight and addition of heat-proof modifier are higher, and the heat resistance for the tubing being prepared is better；But heat-proof modifier
Adding too much the impact strength of tubing and bending property can be caused substantially to be deteriorated, and addition cross at least improve tubing it is resistance to
Hot property unobvious.Inventor, when the addition of heat-proof modifier is 10~30 parts, prepares by being found after numerous experiments
The heat resistance and mechanical property of obtained tubing are preferable.
The present invention makes the dimension card index of polyvinyl chloride electrical casing pipe improve to 90 by adding the heat-proof modifier of specified quantitative
More than DEG C, reach JG 3050-1998《Insulating electrical casing pipe and accessory for building》Standard, it can meet what is constructed under hot environment
Demand.
Preferably, the polyvinyl chloride electrical casing pipe is made up of the component of following mass fraction：
100 parts of polyvinyl chloride resin powder；
20 parts of calcium carbonate；
4.5 parts of heat stabilizer；
10 parts of impact modifier；
0.8 part of lubricant；
1.5 parts of titanium dioxide；
25 parts of heat-proof modifier.
Preferably, the molecular weight of the heat-proof modifier is 80000~90000, and its particle diameter is≤150 μm.
Preferably, the calcium carbonate is winnofil, its particle diameter≤5.5 μm, whiteness >=90.
Preferably, using one or more of to calcium carbonate progress in titanate esters coupling molecule, silane couplent or stearic acid
Surface treatment.In the present invention, calcium carbonate can be surface-treated using dry or wet.
Preferably, the structural formula of the copolymer of the methyl methacrylate and glutarimide is as follows：
Wherein, m+n=500~900.
Preferably, the heat stabilizer is one kind in complex lead salt stabilizer, calcium zinc stabilizer or organic tin stabilizer
It is or several.
Preferably, the impact modifier is haloflex, esters of acrylic acid, ethylene-vinyl acetate copolymer and first
One or more in base methylacrylate-butadiene-polystyrene ternary graft copolymer.
Preferably, the lubricant is paraffin, Tissuemat E, stearic acid, monoglyceride, OPE, calcium stearate
Or the one or more in lead stearate.
Preferably, the titanium dioxide is rutile type titanium white.
The preparation method of above-mentioned polyvinyl chloride electrical casing pipe, methods described comprise the following steps：
The heat of raw material input high speed mixer group is mixed into cylinder, treats that the temperature of the mixed cylinder of heat reaches 115~120 DEG C after high-speed stirred
When be discharged into cold mixed cylinder stir cooling, treat cold mixed cylinder temperature be down to less than 50 DEG C stop stir；Then material is added into extruder
It is plasticizing, molded, cool down, cut and produce the polyvinyl chloride electrical casing pipe.
Preferably, the extruder is conical double screw extruder, and the temperature of the machine barrel of the extruder is 155~175
℃。
Preferably, the molded temperature is 160~195 DEG C.
Compared with prior art, the present invention has the advantages that：
JG 3050-1998《Insulating electrical casing pipe and accessory for building》The dimension card index actual measurement of polyvinyl chloride electrical casing pipe it is general
For 80 ± 1 DEG C, the present invention makes polyvinyl chloride electrical casing pipe by adding the heat-proof modifier of specified quantitative, particle diameter and molecular weight
Dimension card index is improved to more than 90 DEG C, while keeps the other each physical and mechanical property indexs of tubing to keep being basically unchanged, gained pipe
Material properties reach JG 3050-1998《Insulating electrical casing pipe and accessory for building》Standard, it can meet to construct under hot environment
Demand, suitable for the reinforced concrete construction of large volume.
Embodiment
With reference to embodiment, the present invention is described in further detail, but the implementation of the present invention is not limited to this.
Unless stated otherwise, material involved in embodiment, method are material commonly used in the art and method.
Embodiment 1~4 and a kind of polyvinyl chloride electrical casing pipe of comparative example 1~4
The formula such as table 1 below for the polyvinyl chloride electrical casing pipe that embodiment 1~4 provides, the preparation of the polyvinyl chloride electrical casing pipe
Method is as follows：
The heat of raw material input high speed mixer group is mixed into cylinder, treats that the temperature of the mixed cylinder of heat reaches 115~120 DEG C after high-speed stirred
When be discharged into cold mixed cylinder stir cooling, treat cold mixed cylinder temperature be down to less than 50 DEG C stop stir；Then material is added into extruder
It is plasticizing, molded, cool down, cut and produce the polyvinyl chloride electrical casing pipe.
In following embodiment, the extruder is conical double screw extruder, the temperature of the machine barrel of the extruder
For 155~175 DEG C；The molded temperature is 160~195 DEG C.
The polyvinyl chloride electrical casing pipe that the embodiment 1~4 of table 1 and comparative example 1~4 provide
In upper table 1, the molecular weight of the heat-proof modifier in embodiment 1~4 is 80000~90000, and its particle diameter is≤170 μ
m；The molecular weight of heat-proof modifier in comparative example 4 is 60000, and its particle diameter is≤170 μm.
The polyvinyl chloride electrical casing pipe that the various embodiments described above verification ratio is prepared is according to JG 3050-1998《Building
With insulating electrical casing pipe and accessory》Standard requirement is detected, test result such as table 2 below.
The performance test for the polyvinyl chloride electrical casing pipe that the embodiment 1~4 of table 2 and comparative example 1~4 provide
。
By the detection data analysis of above-mentioned each experimental example and comparative example, added in common polyvinyl chloride electrical casing pipe formula
The copolymer of heat-resisting the remodeling agent methymethacrylate and glutarimide of certain content, molecular weight and particle diameter, and fit
When the dosage for adjusting other components, the dimension card index for the tubing being prepared has notable rising, and thermal deformation temperature is improved so as to reach
The effect of degree, and unobvious are influenceed on other physical and mechanical property indexs, the indices of tubing reach JG 3050-1998
《Insulating electrical casing pipe and accessory for building》Standard requirement.
Claims (10)
1. the polyvinyl chloride electrical casing pipe of a kind of high heat distortion temperature, it is characterised in that the polyvinyl chloride electrical casing pipe is by such as
The component composition of lower mass fraction：
100 parts of polyvinyl chloride resin powder；
5~25 parts of calcium carbonate；
3~5 parts of heat stabilizer；
7~11 parts of impact modifier；
0.5~1.3 part of lubricant；
0.5~2.5 part of titanium dioxide；
10~30 parts of heat-proof modifier；
Wherein, the heat-proof modifier is the copolymer of methyl methacrylate and glutarimide, the heat-proof modifier
Molecular weight is about 60000~90000, its particle diameter≤170 μm.
2. the polyvinyl chloride electrical casing pipe of high heat distortion temperature according to claim 1, it is characterised in that the polyvinyl chloride
Electrical casing pipe is made up of the component of following mass fraction：
100 parts of polyvinyl chloride resin powder；
20 parts of calcium carbonate；
4.5 parts of heat stabilizer；
10 parts of impact modifier；
0.8 part of lubricant；
1.5 parts of titanium dioxide；
25 parts of heat-proof modifier.
3. the polyvinyl chloride electrical casing pipe of high heat distortion temperature according to claim 1, it is characterised in that described heat resistance modified
The molecular weight of agent is 80000~90000, and its particle diameter is its particle diameter≤150 μm.
4. the polyvinyl chloride electrical casing pipe of high heat distortion temperature according to claim 1, it is characterised in that the calcium carbonate is
Winnofil, its particle diameter≤5.5 μm, whiteness >=90.
5. the polyvinyl chloride electrical casing pipe of high heat distortion temperature according to claim 1, it is characterised in that the metering system
The structural formula of the copolymer of sour methyl esters and glutarimide is as follows：
Wherein, m+n=500~900.
6. the polyvinyl chloride electrical casing pipe of high heat distortion temperature according to claim 4, it is characterised in that using titanate esters coupling
One or more in connection agent, silane couplent or stearic acid are surface-treated to calcium carbonate.
7. the polyvinyl chloride electrical casing pipe of high heat distortion temperature according to claim 1, it is characterised in that described impact-resistant modified
Agent is haloflex, esters of acrylic acid, ethylene-vinyl acetate copolymer and MBS three
One or more in first graft copolymer.
8. the polyvinyl chloride electrical casing pipe of high heat distortion temperature according to claim 1, it is characterised in that the lubricant is
One or more in paraffin, Tissuemat E, stearic acid, monoglyceride, OPE, calcium stearate or lead stearate.
9. the polyvinyl chloride electrical casing pipe of high heat distortion temperature according to claim 1, it is characterised in that the titanium dioxide is
Rutile type titanium white.
10. the preparation method of any polyvinyl chloride electrical casing pipe of claim 1~9, it is characterised in that methods described includes
Following steps：
The heat of raw material input high speed mixer group is mixed into cylinder, treats that the temperature of the mixed cylinder of heat reaches 115~120 DEG C after high-speed stirred
When be discharged into cold mixed cylinder stir cooling, treat cold mixed cylinder temperature be down to less than 50 DEG C stop stir；Then material is added into extruder
It is plasticizing, molded, cool down, cut and produce the polyvinyl chloride electrical casing pipe.
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| CN201710691866.5A CN107540983A (en) | 2017-08-14 | 2017-08-14 | A kind of polyvinyl chloride electrical casing pipe of high heat distortion temperature and preparation method thereof |
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| CN201710691866.5A CN107540983A (en) | 2017-08-14 | 2017-08-14 | A kind of polyvinyl chloride electrical casing pipe of high heat distortion temperature and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021027072A1 (en) * | 2019-08-13 | 2021-02-18 | 永高股份有限公司 | Preparation method and application for dedicated pvc-o pipe material |
| CN113234292A (en) * | 2021-04-01 | 2021-08-10 | 广东联塑科技实业有限公司 | High-toughness flame-retardant insulating PVC material and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043513A (en) * | 1988-11-16 | 1990-07-04 | 罗姆和哈斯公司 | Improved the blend polymer of performance |
| CN101531793A (en) * | 2009-04-20 | 2009-09-16 | 四川大学 | Heat-resistant polyvinyl chloride alloy material and preparation method thereof |
| CN102391591A (en) * | 2011-07-28 | 2012-03-28 | 联塑市政管道（河北）有限公司 | Polrvinyl chloride electric power protecting sleeve and processing method thereof |
-
2017
- 2017-08-14 CN CN201710691866.5A patent/CN107540983A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043513A (en) * | 1988-11-16 | 1990-07-04 | 罗姆和哈斯公司 | Improved the blend polymer of performance |
| CN101531793A (en) * | 2009-04-20 | 2009-09-16 | 四川大学 | Heat-resistant polyvinyl chloride alloy material and preparation method thereof |
| CN102391591A (en) * | 2011-07-28 | 2012-03-28 | 联塑市政管道（河北）有限公司 | Polrvinyl chloride electric power protecting sleeve and processing method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021027072A1 (en) * | 2019-08-13 | 2021-02-18 | 永高股份有限公司 | Preparation method and application for dedicated pvc-o pipe material |
| CN113234292A (en) * | 2021-04-01 | 2021-08-10 | 广东联塑科技实业有限公司 | High-toughness flame-retardant insulating PVC material and preparation method and application thereof |
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Application publication date: 20180105 |