CN110746679A - Special material for heat-resistant polyethylene steel framework reinforced composite pipeline and preparation method thereof - Google Patents
Special material for heat-resistant polyethylene steel framework reinforced composite pipeline and preparation method thereof Download PDFInfo
- Publication number
- CN110746679A CN110746679A CN201911115794.5A CN201911115794A CN110746679A CN 110746679 A CN110746679 A CN 110746679A CN 201911115794 A CN201911115794 A CN 201911115794A CN 110746679 A CN110746679 A CN 110746679A
- Authority
- CN
- China
- Prior art keywords
- heat
- parts
- reinforced composite
- special material
- composite pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a special material for a heat-resistant polyethylene steel framework reinforced composite pipeline and a preparation method thereof, wherein the special material comprises the following components in parts by weight: 70-90 parts of Polyethylene (PE), 5-15 parts of filler, 3-10 parts of chain extender, 1.5-5 parts of fluidity modifier, 0.3-1.2 parts of antioxidant, 0.2-0.5 part of ultraviolet absorbent and 3-5 parts of cross-linking agent. The heat-resistant polyethylene steel skeleton composite reinforced pipeline produced by the special material has the characteristics of good mechanical property, better low-temperature impact resistance, higher thermal deformation temperature, good surface gloss, good production stability and the like.
Description
Technical Field
The invention belongs to the technical field of materials, and particularly relates to a special material for a heat-resistant polyethylene steel framework reinforced composite pipeline and a preparation method thereof.
Background
The plastic products are widely applied in our lives, such as daily necessities, automobiles, aerospace and the like. In the transport field, plastic conduit plays very important effect, compares with traditional metal conduit, and plastic conduit has that the dead weight is light, corrosion-resistant, compressive strength is high, sanitary safety, and the rivers resistance is little, the energy can be saved, save metal, improve living environment, long service life, characteristics such as safe convenient receive the favor of the pipeline engineering community. The development of the plastic pipeline not only promotes the development of manufacturing the plastic pipe, but also can develop the related fields of plastic material modification research, formula design, engineering installation and the like, and forms an integrated industry development situation which takes the research of new materials and modified materials as a source, takes the plastic pipeline manufacturing as a center and takes the engineering application as a rear shield, and the aspects of plastic modification, plastic processing, engineering application, comprehensive pipe gallery construction, pipeline application maintenance/repair and the like related to the plastic pipeline manufacturing industry all belong to high and new technology industries.
At present, sewage plastic pipes are PE pipes and PP pipes, HDPE and PP reinforced modified materials are adopted respectively, and pipes formed by the two materials can easily meet common use requirements but cannot meet the use requirements of transporting a large amount of wastewater. HDPE pipes have the following problems: 1. The Vicat temperature is low, the performance is poor, and the temperature is less than 80 ℃; 2. the tensile strength is low and is less than 18 MPa; 3. the flexural modulus is low and is less than 800 MPa; 4. the heat conductivity is poor; 5. the processability is poor, the viscosity of HDPE material is high, the production speed is slow, and the appearance gloss of the pipe is poor.
The invention takes PE as a main base material, takes zinc oxide, magnesium oxide or aluminum oxide as a filler, screens or prepares a cross-linking agent, a fluidity modifier, a flame retardant, an antioxidant, an ultraviolet absorbent and the like with high cost performance for blending modification, and develops the special material of the heat-resistant polyethylene steel framework reinforced composite pipeline; the special material is applied to the production and application research of polyethylene pipes.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a special material for a heat-resistant polyethylene steel framework reinforced composite pipeline and a preparation method thereof by adopting a plastic alloy modification method, thereby obtaining a new material with high performance, functionalization and specialization, improving and improving the performance of a single plastic material and reducing the cost.
In order to realize the purpose of the invention, the specific technical scheme is as follows:
the special material for the heat-resistant polyethylene steel framework reinforced composite pipeline comprises the following components in parts by weight:
70-90 parts of polyethylene
5-15 parts of filler
3-10 parts of chain extender
1.5-5 parts of fluidity modifier
0.3 to 1.2 portions of antioxidant
0.2 to 0.5 part of ultraviolet absorber
3-5 parts of cross-linking agent
The polyethylene has MFR of 0.24 g/10min, a flexural modulus of 700-800 MPa, and an impact strength (23 ℃) of 58-60 kJ/m2The pipe grade granules with the tensile strength of 23-24 MPa take PE as a main base material of the composite material, and lay a foundation for improving the strength and the heat conductivity of the special material.
The filler is zinc oxide, magnesium oxide or aluminum oxide and the like as a heat conduction modifier, and the preparation method comprises the following steps: adding zinc oxide, magnesium oxide or aluminum oxide and 0.5-1.5 wt% of coupling agent into a high-speed mixer, and mixing at a high-speed rotation speed of 2000-4000 rpm for 30-60 min, wherein the coupling agent is a silane coupling agent. The compound addition of the material not only improves the defects of strength, high resistivity, thermal shrinkage and the like of the special material, but also improves the heat conductivity of the special material, so that the product has excellent processing performance and comprehensive mechanical property.
The chain extender is diallyl maleate (DAM) or diallyl phthalate (DAP), the toughness and strength of the PE are improved, the mechanical property of the composite material is ensured, and the requirement of the pipe is met.
The fluidity modifier is at least one of a fluorine-containing additive and silicone powder, improves the processing fluidity of PE resin, improves the dispersibility and lubricity of materials, ensures that the fluidity of the material is moderate, meets the requirements of pipes, is beneficial to improving the surface gloss and smoothness of products, reduces the melt pressure, reduces the waiting time in production, reduces the processing temperature, reduces the resin decomposition and reduces the energy consumption.
The ultraviolet absorbent adopts UV 531; the antioxidant adopts a compound system of an antioxidant 1010 and phosphite ester, 1010 is used as a main antioxidant to terminate a free radical reactant, phosphite ester is used as an auxiliary antioxidant, and a peroxide agent generated by decomposition has a good synergistic effect. UV531 protects the article from ultraviolet damage and improves the weathering performance of the article.
The cross-linking agent is dicumyl peroxide (DCP), which can improve the adhesion of the matrix, thereby improving the wear resistance, strength, performance and the like of the special material.
A special material for a heat-resistant polyethylene steel framework reinforced composite pipeline and a preparation method thereof comprise the following steps:
(1) adding at least one of zinc oxide, magnesium oxide or aluminum oxide and 0.5-1.5 wt% of coupling agent into a high-speed mixer, and mixing at high speed of 2000-4000 rpm for 30-60 min to obtain a filler;
(2) drying PE and filler to remove water, putting the PE and the filler into a high-speed mixer according to a ratio, mixing, keeping the rotating speed at 2000-4000 rpm, and stirring at a high speed for 30-60 min;
(3) adding the dried crosslinking agent, the fluidity modifier, the antioxidant, the ultraviolet absorbent and the chain extender into the high-speed mixer in the formula ratio in sequence, and continuing blending for 10-20 min;
(4) putting the blended material into a double-screw granulator to prepare the special material for the heat-resistant polyethylene steel framework reinforced composite pipeline
The twin-screw process parameters are as follows: the screw rotating speed is 200-300 rpm, and the processing temperature is 200-230 ℃.
After the technical scheme is adopted, the invention has the following characteristics and advantages: 1. the product has good low-temperature toughness and good surface glossiness; 2. the product has the characteristics of high compressive strength, high melting point, high resistivity, small thermal shrinkage coefficient and the like; 3. the product has good anti-cracking performance and reprocessing performance; 4. by adopting a plastic alloy modification method, a new material with high performance, functionalization and specialization is obtained, and the performance of a single plastic material is improved and enhanced.
Detailed Description
The polyethylene adopted in the embodiment of the invention has MFR of 0.24 g/10min, flexural modulus of 700-800 MPa and impact strength (23 ℃) of 55-60 kJ/m2And the tensile strength is 23-24 MPa; the filler is at least one of zinc oxide, magnesium oxide or aluminum oxide, and has the same effect; the chain extender is diallyl maleate (DAM) or diallyl phthalate (DAP) and has the same effect; the fluidity modifier is at least one of a fluorine-containing polymer additive PPA (CHY-F5000) and silicone powder, and has the same effect; the ultraviolet absorbent adopts UV 531; the antioxidant is a compound of antioxidant 1010 and phosphite ester; the crosslinking agent is dicumyl peroxide (DCP).
Example 1
1) The formula comprises the following components in parts by weight:
80kg of polyethylene
12kg of filler
Chain extender 3kg
Flow modifier 2.5kg
Antioxidant 0.3 kg
Ultraviolet absorber 0.2 kg
Cross-linking agent 2kg
2) The preparation method comprises the following steps:
(1) adding 12kg of alumina and 1 wt% of silane coupling agent KH560 into a high-speed mixer, keeping the rotating speed at 2000 rpm, and stirring at high speed for 30min to obtain the filler;
(2) putting 80kg of polyethylene dried to remove moisture and 15 kg of filler obtained in the step (1) into a high-speed mixer for mixing, keeping the rotating speed at 2000 rpm, and stirring at high speed for 30 min;
(3) sequentially adding 3kg of chain extender obtained in the step (2), 2.5kg of fluorine-containing polymer additive PPA (CHY-F5000), 0.3 kg of antioxidant (consisting of 10100.15 kg of antioxidant and 0.15 kg of phosphite), 5310.2 kg of UV and 2kg of cross-linking agent into the high-speed mixer, and continuously blending for 10 min;
(4) and (3) putting 100 kg of the blended material obtained in the step (3) into a double-screw granulator to prepare the special material for the high-performance functional polyethylene steel skeleton reinforced composite pipeline, wherein the screw rotation speed is 200 rpm, and the processing temperature is 200-230 ℃.
(5) And (3) adding the special material obtained in the step (4) into an extrusion forming machine, compressing and homogenizing the special material by a charging barrel of the extrusion forming machine, extruding and forming the special material from a forming neck mold, and then carrying out conventional operations such as sizing, cooling, traction and the like to obtain a modified polyethylene pipe, wherein the rotating speed of a screw is 200 rpm, and the processing temperature is 190-230 ℃. The index values of various properties of the prepared special material for the modified polyethylene pipeline are shown in table 1.
Example 2
1) The formula comprises the following components in parts by weight:
80kg of polyethylene
10 kg of filler
Chain extender 3kg
Flow modifier 3kg
Antioxidant 0.6 kg
Ultraviolet absorber 0.4 kg
3kg of crosslinking agent
2) The preparation method comprises the following steps:
(1) adding 5kg of alumina, 5kg of magnesia and 1 wt% of silane coupling agent KH560 into a high-speed mixer, keeping the rotating speed at 2000 rpm, and stirring at high speed for 30min to obtain the filler;
(2) mixing 80kg of polyethylene dried to remove moisture and 8 kg of filler obtained in the step (1) in a high-speed mixer, keeping the rotating speed at 2000 rpm, and stirring at a high speed for 30 min;
(3) sequentially adding 3kg of chain extender obtained in the step (2) after drying, 3kg of flow modifier (2 kg of fluorine-containing polymer additive PPA (CHY-F5000), 1kg of silicone powder), 0.6 kg of antioxidant (consisting of 10100.4 kg of antioxidant and 0.2 kg of phosphite ester), 5310.4 kg of UV and 3kg of cross-linking agent into the high-speed mixer, and continuously blending for 10 min;
(4) and (3) putting 100 kg of the blended material obtained in the step (3) into a double-screw granulator to prepare the special material for the high-performance functional polyethylene steel skeleton reinforced composite pipeline, wherein the screw rotation speed is 200 rpm, and the processing temperature is 200-230 ℃.
(5) And (3) adding the special material obtained in the step (4) into an extrusion molding machine, compressing and homogenizing the special material by a charging barrel of the extrusion molding machine, extruding and molding the special material from a molding neck ring die, and then carrying out conventional operations such as sizing, cooling, traction and the like to obtain the modified polyethylene pipe. The screw rotating speed is 200 rpm, and the processing temperature is 190-230 ℃. The index values of various properties of the prepared special material for the modified polyethylene pipeline are shown in table 1.
Example 3
Evenly mixing 8.5 kg of polyethylene, 0.8 kg of alumina, 0.2 kg of magnesia, 0.3 kg of chain extender, 0.1 kg of flow modifier, 0.06 kg of antioxidant, 0.04kg of ultraviolet absorbent and 1 phr, 3 phr and 5phr of cross-linking agent respectively, and carrying out melt granulation in a double-screw extruder, wherein the cylinder temperature is 130 ℃, 145 ℃, 155 ℃, 170 ℃, 190 ℃, 205 ℃, 195 ℃, 180 ℃, 170 ℃, 200 r/min of screw rotation speed, 20 r/min of feeding speed and 200 ℃, 210 ℃ and 198 ℃ of injection molding machine respectively. The bars obtained by injection molding were subjected to tensile (GB/T1040.2-2006) and impact (GB/T1943-2008) tests, and the results are shown in Table 2.
With the increase of the parts of the cross-linking agent, the impact strength of the polyethylene is obviously improved, the tensile strength is also obviously improved, and a cross-linked network structure is formed in the polymer material.
Table 1 shows the performance index values of the heat-resistant polyethylene pipe prepared in example 1 of the present invention
TABLE 2 mechanical Properties of the PE modified with different amounts of crosslinker
Claims (8)
1. The special material for the heat-resistant polyethylene steel framework reinforced composite pipeline is characterized by comprising the following components in parts by weight:
70-90 parts of polyethylene
5-15 parts of filler
3-10 parts of chain extender
1.5-5 parts of fluidity modifier
0.3 to 1.2 portions of antioxidant
0.2 to 0.5 part of ultraviolet absorber
3-5 parts of a cross-linking agent.
2. The special material for the heat-resistant polyethylene steel framework reinforced composite pipeline as claimed in claim 1, wherein the polyethylene has MFR of 0.24 g/10min, flexural modulus of 700-800 MPa, and impact strength of 58-60 kJ/m at 23 ℃2And the tensile strength is 23-24 MPa.
3. The material special for the heat-resistant polyethylene steel skeleton reinforced composite pipeline as claimed in claim 1, wherein the filler is at least one of zinc oxide, magnesium oxide or aluminum oxide as a heat conduction modifier, and the preparation method comprises: adding at least one of zinc oxide, magnesium oxide or aluminum oxide and 0.5-1.5 wt% of coupling agent into a high-speed mixer, and mixing at high speed of 2000-4000 rpm for 30-60 min, wherein the coupling agent is silane coupling agent.
4. The special material for the heat-resistant polyethylene steel skeleton reinforced composite pipeline as claimed in claim 1, wherein the chain extender is diallyl maleate (DAM) or diallyl phthalate (DAP).
5. The material special for the heat-resistant polyethylene steel framework reinforced composite pipeline as claimed in claim 1, wherein the fluidity modifier is at least one of fluorine-containing auxiliary agent and silicone powder; the antioxidant is a compound of antioxidant 1010 and phosphite ester; the ultraviolet absorber is UV 531.
6. The special material for the heat-resistant polyethylene steel skeleton reinforced composite pipeline according to claim 1, wherein the crosslinking agent is dicumyl peroxide (DCP).
7. The preparation method of the special material for the heat-resistant polyethylene steel framework reinforced composite pipeline, which is disclosed by any one of claims 1 to 6, is characterized by comprising the following steps of:
(1) adding at least one of zinc oxide, magnesium oxide or aluminum oxide and 0.5-1.5 wt% of coupling agent into a high-speed mixer, and mixing at high speed of 2000-4000 rpm for 30-60 min to obtain a filler;
(2) drying polyethylene and filler to remove water, putting the polyethylene and the filler into a high-speed mixer according to a ratio, mixing, keeping the rotating speed at 2000-4000 rpm, and stirring at a high speed for 30-60 min;
(3) adding the dried crosslinking agent, the fluidity modifier, the antioxidant, the ultraviolet absorbent and the chain extender into the high-speed mixer in the formula ratio in sequence, and continuing blending for 10-20 min;
(4) and (3) putting the blended material into a double-screw extruder, and performing extrusion granulation to prepare the special material for the heat-resistant polyethylene steel framework reinforced composite pipeline.
8. The preparation method of the special material for the heat-resistant polyethylene steel framework reinforced composite pipeline as claimed in claim 6, wherein the twin-screw technological parameters are as follows: the screw rotating speed is 200-300 rpm, and the processing temperature is 200-230 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911115794.5A CN110746679A (en) | 2019-11-15 | 2019-11-15 | Special material for heat-resistant polyethylene steel framework reinforced composite pipeline and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911115794.5A CN110746679A (en) | 2019-11-15 | 2019-11-15 | Special material for heat-resistant polyethylene steel framework reinforced composite pipeline and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110746679A true CN110746679A (en) | 2020-02-04 |
Family
ID=69283219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911115794.5A Pending CN110746679A (en) | 2019-11-15 | 2019-11-15 | Special material for heat-resistant polyethylene steel framework reinforced composite pipeline and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110746679A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115558188A (en) * | 2022-11-15 | 2023-01-03 | 福州大学 | Preparation method of block copolymerization polypropylene and aluminum oxide synergistically enhanced polyethylene composite pipe |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3567697A (en) * | 1968-01-23 | 1971-03-02 | Ici Ltd | Method of producing articles of cross-linked polyethylene |
| CN1749303A (en) * | 2004-09-15 | 2006-03-22 | 上海高分子功能材料研究所 | Infrared irridiation crosslinked polyethylene plastic for pipe, wire and cable and its preparing method |
| CN101168609A (en) * | 2007-09-30 | 2008-04-30 | 广州市合诚化学有限公司 | Special-purpose material for beta nucleater modified random copolymerization polypropylene pipe and preparation method thereof |
| CN101633759A (en) * | 2009-08-21 | 2010-01-27 | 大庆石油管理局 | PE-RT modified special material for steel frame-plastic complex pipe |
| CN101906225A (en) * | 2009-06-04 | 2010-12-08 | 合肥杰事杰新材料有限公司 | Thermal conductive high polymer material applied to pipes and preparation method thereof |
| CN102408610A (en) * | 2011-11-14 | 2012-04-11 | 联塑市政管道（河北）有限公司 | Functional polyethylene pipe and preparation method thereof |
| CN103059376A (en) * | 2012-12-24 | 2013-04-24 | 常州南京大学高新技术研究院 | Enhanced toughening recycled polyethylene material and preparation method thereof |
| CN103160014A (en) * | 2011-12-15 | 2013-06-19 | 中国石油化工股份有限公司 | Polyethylene resin composition for hot-water pipeline and preparation method thereof |
| CN109401045A (en) * | 2018-09-06 | 2019-03-01 | 福建师范大学 | A kind of performance function alloy modified polypropene ripple pipe as special material and preparation method thereof |
-
2019
- 2019-11-15 CN CN201911115794.5A patent/CN110746679A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3567697A (en) * | 1968-01-23 | 1971-03-02 | Ici Ltd | Method of producing articles of cross-linked polyethylene |
| CN1749303A (en) * | 2004-09-15 | 2006-03-22 | 上海高分子功能材料研究所 | Infrared irridiation crosslinked polyethylene plastic for pipe, wire and cable and its preparing method |
| CN101168609A (en) * | 2007-09-30 | 2008-04-30 | 广州市合诚化学有限公司 | Special-purpose material for beta nucleater modified random copolymerization polypropylene pipe and preparation method thereof |
| CN101906225A (en) * | 2009-06-04 | 2010-12-08 | 合肥杰事杰新材料有限公司 | Thermal conductive high polymer material applied to pipes and preparation method thereof |
| CN101633759A (en) * | 2009-08-21 | 2010-01-27 | 大庆石油管理局 | PE-RT modified special material for steel frame-plastic complex pipe |
| CN102408610A (en) * | 2011-11-14 | 2012-04-11 | 联塑市政管道（河北）有限公司 | Functional polyethylene pipe and preparation method thereof |
| CN103160014A (en) * | 2011-12-15 | 2013-06-19 | 中国石油化工股份有限公司 | Polyethylene resin composition for hot-water pipeline and preparation method thereof |
| CN103059376A (en) * | 2012-12-24 | 2013-04-24 | 常州南京大学高新技术研究院 | Enhanced toughening recycled polyethylene material and preparation method thereof |
| CN109401045A (en) * | 2018-09-06 | 2019-03-01 | 福建师范大学 | A kind of performance function alloy modified polypropene ripple pipe as special material and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115558188A (en) * | 2022-11-15 | 2023-01-03 | 福州大学 | Preparation method of block copolymerization polypropylene and aluminum oxide synergistically enhanced polyethylene composite pipe |
| CN115558188B (en) * | 2022-11-15 | 2024-07-05 | 福州大学 | Preparation method of segmented polypropylene and alumina synergistically reinforced polyethylene composite pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109456563B (en) | Special material for UHMWPE alloy compatibilization toughening modified polypropylene corrugated pipe and preparation method thereof | |
| CN102952336B (en) | Active basic magnesium sulfate whisker modified polypropylene composite material and preparation method thereof | |
| CN102492204B (en) | Multifunctional black master batch for polypropylene resin and preparation method thereof | |
| CN103073794B (en) | Special material for high-rigidity high-heat-resistance low-shrinkage air conditioning wind wheel and preparation method thereof | |
| CN109401045B (en) | Special material for high-performance functionalized alloy modified polypropylene corrugated pipe and preparation method thereof | |
| CN103059537B (en) | High-rigidity high-fluidity PC/ABS (polycarbonate/acrylonitrile-butadiene-styrene) alloy and preparation method thereof | |
| CN105153531A (en) | High-temperature-resistant PE (polyethylene) corrugated pipe filling master batch and preparation method thereof | |
| CN103756092A (en) | Thin-wall and high-pressure-resisting PE (Polyethylene) hose and preparation method thereof | |
| CN105017611A (en) | Ageing-resistant filling masterbatch for PE bellows and preparation method therefor | |
| CN110746679A (en) | Special material for heat-resistant polyethylene steel framework reinforced composite pipeline and preparation method thereof | |
| CN102911433A (en) | Long fiberglass-reinforced polypropylene composite material and preparation method thereof | |
| CN102618022B (en) | Double-resistance nylon tube and preparation method thereof | |
| CN112552684A (en) | Low-linear expansion coefficient polyphenylene sulfide composite material special for micro-arc oxidation and preparation and application thereof | |
| CN104497396A (en) | Internal-tooth heat-shrinkable casing for protecting vehicle pipelines, and preparation method and application thereof | |
| CN106700329A (en) | Preparation method of antistatic ultra-flexible coal mine ventilating duct | |
| CN108047573B (en) | Special material for PPR (polypropylene random) pipe and preparation method thereof | |
| CN113388192B (en) | High-toughness low-temperature-resistant high-gloss regenerated PP modified material and preparation method thereof | |
| CN110229421B (en) | High-temperature-resistant injection molding polypropylene material and preparation method and application thereof | |
| CN113845709A (en) | Anti-sagging modified high-density polyethylene water supply pipe and preparation method thereof | |
| CN102504409A (en) | Method for enhancing polypropylene using calcium sulfate whisker | |
| CN111440398A (en) | Special material for ion-crosslinked polyvinyl chloride protection tube | |
| CN105111616A (en) | Wood-plastic decorative building material | |
| CN105111615A (en) | Energy-saving light-weight architectural wood-plastic decorating material | |
| CN107641298A (en) | A kind of nanometer PET bottle | |
| CN105111614A (en) | Nontoxic environment-friendly high-flame-retardancy PVC (polyvinyl chloride) wood-plastic material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200204 |
|
| RJ01 | Rejection of invention patent application after publication |