CN109796654A - A kind of reinforced drain pipe and preparation method thereof - Google Patents
A kind of reinforced drain pipe and preparation method thereof Download PDFInfo
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- CN109796654A CN109796654A CN201811580181.4A CN201811580181A CN109796654A CN 109796654 A CN109796654 A CN 109796654A CN 201811580181 A CN201811580181 A CN 201811580181A CN 109796654 A CN109796654 A CN 109796654A
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- polystyrene
- screw extruder
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention relates to a kind of reinforced drain pipes and preparation method thereof.Preparation method of the invention is added polystyrene as reinforcing agent in high-density polyethylene resin, antioxidant and antiager and high intensity drainpipe is made by adjusting polystyrene molecular structure and dosage.Product rigidity made from method of the invention is high, and elasticity modulus has in fields such as air-conditioning, washing machines and is widely applied in 16MPa or more.
Description
Technical field
The invention belongs to polymeric material fields, and in particular, to a kind of reinforced drain pipe and preparation method thereof.
Background technique
Polyolefin resin is the simplest high molecular material of structure, because its is nontoxic, odorless, resistant to chemical etching, low temperature resistant, resistance to
Water suction, many advantages, such as electrical insulation capability is good and cheap, are one of widest high molecular materials of application range.It is high
Density polyethylene is polymerized under conditions of middle pressure, organic compound make catalyst, and density is generally in 0.94-
0.96, molecular chain length and unbranched, structure is more regular relative to other kinds of polyethylene, crystallinity up to 80% or more,
Hardness is larger, container, in terms of have important application.
However, high density polyethylene (HDPE) is due to crystallinity height, the easy creep of product, poor heat resistance and mechanical property be not good enough, no
Resistance to photooxidation resistance, while nonpolar feature, the poor compatibility with polar material is presented in polyethylene macromolecular chain.Polyethylene this
A little disadvantages greatly limit it in the application of industrial circle.
The method that tradition improves polyethylene rigidity mainly includes addition polypropylene, glass fibre, calcium carbonate etc. and increases
The degree of cross linking.Since polyacrylic fusing point is higher, so that processing temperature is high, product weatherability is poor.Glass fibre, calcium carbonate etc. are inorganic
Filler and polyethylene intersolubility are poor, limited to the promotion of product rigidity, and high amount of inorganic filler is to the other physical of product
It can influence serious.
Therefore, the rigidity for how improving such as drainpipe polyethylene product is still the problem of urgent need to resolve.
Summary of the invention
To solve the above problems, the present invention is intended to provide a kind of polystyrene enhances drainpipe and preparation method thereof, with poly-
Styrene solves the problems, such as present in background technique as reinforcing agent.
To achieve the goals above, the present invention provides following technical schemes:
A kind of preparation method of reinforced drain pipe is provided, comprising steps of being added to screw rod after following components is mixed
Mixing extrusion is carried out in extruder, so that reinforced drain pipe be made；
Preferably, each component parts by weight are as follows:
Preferably, each component parts by weight are as follows:
Preferably, the polystyrene is made by method comprising the following steps: under nitrogen protection, organic molten
In agent, styrene monomer and azodiisobutyronitrile carry out polymerization reaction；After reaction, hindered amine nitrogen is added in the reaction system
Oxygen radical is quenched, and the polystyrene of stabilized radical sealing end is formed.
Preferably, after being quenched, after being evaporated under reduced pressure solvent and unreacted monomer in recovery system, obtained product is straight
It connects for being mixed with high-density polyethylene resin, antioxidant and antiager.
Preferably, the organic solvent is selected from the group below one or more: n-butanol, dimethylbenzene, octane, butyl acetate,
Toluene.
Preferably, the hindered amine nitrogen-oxygen free-radical be tetramethyl piperidine free radical and/or tetramethylpiperidinol nitrogen oxygen from
By base.
Preferably, vacuum distillation carries out at 80~120 DEG C.
Preferably, the vacuum degree of vacuum distillation is 1KPa or less.
Preferably, styrene monomer, azodiisobutyronitrile and organic solvent are according to 100:(0.05~2): (100~500)
Mass ratio mixing.
Preferably, the mass ratio of the hindered amine nitrogen-oxygen free-radical and styrene monomer is 100:(0.1~4).
Preferably, the molar ratio of the hindered amine nitrogen-oxygen free-radical and azodiisobutyronitrile is more than 1:1.
Preferably, the extrusion temperature of screw extruder is 140~180 DEG C.
Preferably, the screw speed of screw extruder is 60~120rpm.
Preferably, the die head temperature of screw extruder is 140~180 DEG C.
Preferably, the antioxidant is selected from the group below one or more: 2,6- tert-butyl-4-methyl-Phenols, bis- (3,5-
Tert-butyl-hydroxy phenyl) thioether, four [β-(3,5- tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters.
Preferably, the antiager is selected from the group below one or more: 2- dihydroxy benaophenonel, 2- (2 '-hydroxyls -5 ' -
Aminomethyl phenyl) benzotriazole, DPPD N,N' diphenyl p phenylene diamine, 2,2 '-diaminodiphenyl sulfides.
Preferably, the polymerization reaction carries out at 70~120 DEG C, and the time of the polymerization reaction is 2~12h.
A kind of drainpipe is provided, the drainpipe is made by above-mentioned preparation method.
The present invention prepares the stabilized radical terminated polystyrene that synthesis has specific structure, is guaranteeing and the high phase of polyethylene
It on the basis of capacitive, in extrusion process, is grafted on polyethylene molecular chain, guarantees sufficiently to act between resin, be greatly improved
Properties of product.
Compared with prior art, include: the advantages of technical solution of the present invention
(1) preparation method of the present invention controls polystyrene structure, it is ensured that with polyethylene intermiscibility, dosage is up to reaction original
Expect 30% or more gross weight；
(2) raw material sources of preparation method of the present invention are abundant, cheap；
(3) product rigidity made from preparation method of the present invention is high, and elasticity modulus is in 16MPa or more；
(4) drainpipe made from preparation method of the present invention has in fields such as air-conditioning, washing machines and is widely applied.
Specific embodiment
The present invention introduces polystyrene as increasing in the formula of high-density polyethylene resin, antioxidant and antiager
Strong agent prepares high-intensitive drainpipe by adjusting polystyrene molecular structure and dosage.
Polystyrene due to its have rigid benzene ring structure thus there is high intensity, but due to the pole of traditional polystyrene
Property is big, leads to polystyrene and poor with the intersolubility of polyethylene, the two can not homogeneous blend.Present invention employs with specific knot
The polystyrene of structure controls suitable polystyrene molecular structure, ensure that the compatibility with polyvinyl resin as reinforcing agent,
Polystyrene is subjected to stabilized radical sealing end, it is promoted further to react during extrusion molding, accesses polyethylene network,
To utilize polystyrene rigidity phenyl ring and amorphous structure, weatherability high intensity drainpipe is prepared, has improved draining
The rigidity of pipe.
Presently preferred embodiments of the present invention will be described in detail below, to be clearer to understand the purpose of the present invention, spy
Point and advantage.
In description herein, elaborate certain details to provide for the purpose for illustrating various disclosed embodiments
To the thorough understanding of various open embodiments.But it one skilled in the relevant art will recognize that can be in without these details
One or more details the case where practice embodiment.Under other circumstances, well known device associated with this application, knot
Structure and technology may not be illustrated in detail or describe to avoid unnecessarily obscuring the description of embodiment.
Unless context has other needs, and in the whole instruction and claim, word " comprising " and its modification, such as
"comprising" and " having " should be understood meaning that is open, including, that is, should be interpreted that " including, but are not limited to ".
Expression is in conjunction with the embodiments described to be referred to " one embodiment " or " embodiment " throughout the specification
Certain features, structure or feature are included at least one embodiment.Therefore, in each position of the whole instruction " at one
In embodiment " or " in an embodiment " in appearance without all referring to identical embodiment.In addition, certain features, structure or feature
It can combine in any way in one or more embodiments.
The singular as used in the specification and appended " one " and " described " include plural object, are removed
It is clearly dictated otherwise in non-text.It should be noted that term "or" is usually used with the meaning that it includes "and/or", unless literary
In clearly dictate otherwise.
The present invention uses the measurement testing elastic modulus of GB/T 9341-2008 plastics bending property.
Embodiment 1
The synthesis of step 1 polystyrene
First by styrene monomer, azodiisobutyronitrile, toluene, by 100:0.5:160 mass ratio after mixing, lead to
After then carrying out polymerization reaction 8h under 85 DEG C (polymerization temperature), it is free that 1 mass parts tetramethyl piperidine is added in nitrogen displaced air
Base quenching reaction forms stabilized radical terminated polystyrene.It is evaporated under reduced pressure at 110 DEG C, recycling design and unreacted
After monomer, products therefrom is polystyrene.
Step 2 polystyrene enhances drainpipe preparation
By polystyrene made from 80 parts by weight high-density polyethylene resins, 20 parts by weight above-mentioned steps, 1 parts by weight four
[β-(3,5- tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and 3 parts by weight 2- (2 '--5 '-aminomethyl phenyl of hydroxyl) benzo
Triazole after mixing, be added to single screw extrusion machine and squeezed out, control seven sections of temperature of extruder are respectively 140,
150,180,175,170,165,160 DEG C, screw speed 75rpm, die head temperature be 160 DEG C, obtain high-intensitive drainpipe.Bullet
Property modulus be 17.3MPa.
Antioxidant or antiager in embodiment 1 can use antioxidant or antiager replacement in following table
Embodiment 2-6
The preparation method of embodiment 2-6, in addition to the polystyrene for selecting the preparation of different polymerization temperatures, remaining and embodiment 1
It is identical.
Table 1
Embodiment 7-9
The preparation method of embodiment 7-9, except the weight part ratio exception for selecting different polystyrene and polyethylene, remaining with
Embodiment 1 is identical.
Table 2
Comparative example 1
Under the conditions of embodiment 1, not plus polystyrene, by 100 parts by weight high-density polyethylene resins, 1 parts by weight, four [β-
(3,5- tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and 3 parts by weight 2- (2 '--5 '-aminomethyl phenyl of hydroxyl) benzo three
Azoles after mixing, be added to single screw extrusion machine and squeezed out, control seven sections of temperature of extruder are respectively 140,150,
180,175,170,165,160 DEG C, screw speed 75rpm, die head temperature are 160 DEG C, obtained drainpipe, and elasticity modulus is
12.6MPa。
Product made from preparation method of the invention all has good elasticity modulus.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of preparation method of reinforced drain pipe, it is characterised in that: comprising steps of being added to after following components is mixed
Mixing extrusion is carried out in screw extruder, so that reinforced drain pipe be made；
2. preparation method according to claim 1, it is characterised in that: the polystyrene, which passes through, to be included the following steps
Method is made: under nitrogen protection, in organic solvent, styrene monomer and azodiisobutyronitrile carry out polymerization reaction；Reaction
After, hindered amine nitrogen-oxygen free-radical is added in the reaction system and is quenched, the polystyrene of stabilized radical sealing end is formed.
3. preparation method according to claim 1, it is characterised in that: each component parts by weight are as follows:
4. preparation method according to claim 1, it is characterised in that: the extrusion temperature of screw extruder is 140~180
℃。
5. preparation method according to claim 1, it is characterised in that: the screw speed of screw extruder be 60~
120rpm。
6. preparation method according to claim 1, it is characterised in that: the die head temperature of screw extruder is 140~180
℃。
7. preparation method according to claim 1, it is characterised in that: the antioxidant is selected from the group below a kind of or more
Kind: 2,6- tert-butyl-4-methyl-Phenol, bis- (3,5- tert-butyl-hydroxy phenyl) thioethers, four [β-(3,5- tert-butyl -4- hydroxyls
Base phenyl) propionic acid] pentaerythritol ester.
8. preparation method according to claim 1, it is characterised in that: the antiager is selected from the group below a kind of or more
Kind: 2- dihydroxy benaophenonel, 2- (2 '--5 '-aminomethyl phenyl of hydroxyl) benzotriazole, DPPD N,N' diphenyl p phenylene diamine, 2,2 '-two
Diaminodiphenyl sulfide.
9. preparation method according to claim 2, it is characterised in that: the polymerization reaction carries out at 70~120 DEG C, institute
The time for stating polymerization reaction is 2~12h.
10. a kind of drainpipe, it is characterised in that: the drainpipe is by the described in any item preparation method systems of claim 1-9
?.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811580181.4A CN109796654B (en) | 2018-12-24 | 2018-12-24 | Enhanced drain pipe and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811580181.4A CN109796654B (en) | 2018-12-24 | 2018-12-24 | Enhanced drain pipe and preparation method thereof |
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| CN109796654A true CN109796654A (en) | 2019-05-24 |
| CN109796654B CN109796654B (en) | 2022-03-18 |
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| CN201811580181.4A Active CN109796654B (en) | 2018-12-24 | 2018-12-24 | Enhanced drain pipe and preparation method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6191228B1 (en) * | 1999-01-27 | 2001-02-20 | Polywood Inc. | Use of recycled plastics for preparing high performance composite railroad ties |
| CN102627797A (en) * | 2012-04-18 | 2012-08-08 | 飞跃（台州）新型管业科技有限公司 | HDPE (High-Density Polyethylene) composite material for winding reinforcing pipe |
-
2018
- 2018-12-24 CN CN201811580181.4A patent/CN109796654B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6191228B1 (en) * | 1999-01-27 | 2001-02-20 | Polywood Inc. | Use of recycled plastics for preparing high performance composite railroad ties |
| CN102627797A (en) * | 2012-04-18 | 2012-08-08 | 飞跃（台州）新型管业科技有限公司 | HDPE (High-Density Polyethylene) composite material for winding reinforcing pipe |
Non-Patent Citations (3)
| Title |
|---|
| 冯孝中等主编: "《高分子材料》", 28 February 2007, 哈尔滨工业大学出版社 * |
| 周大纲等编著: "《土工合成材料制造技术及性能》", 31 March 2001, 中国轻工业出版社 * |
| 王国建编著: "《高分子现代合成方法与技术》", 31 July 2013, 同济大学出版社 * |
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