CN105623176A - Plastic inspection well composite material and preparation method thereof - Google Patents
Plastic inspection well composite material and preparation method thereof Download PDFInfo
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- CN105623176A CN105623176A CN201410610717.8A CN201410610717A CN105623176A CN 105623176 A CN105623176 A CN 105623176A CN 201410610717 A CN201410610717 A CN 201410610717A CN 105623176 A CN105623176 A CN 105623176A
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Abstract
The present invention provides a plastic inspection well composite material comprising, by weight, 40-70wt% of block copolymer polypropylene, 5-10wt% of ethylene-propylene rubber, 10-30wt% of talc powder, 10-30wt% of bamboo fiber, 0.03-0.2wt% of an antioxidant, 0.2-0.6wt% of a coupling agent and 0-10wt% of maleic anhydride grafted polyethylene. The present invention also provides a preparation method of the composite material. The plastic inspection well composite material has good performance, low cost, simple preparation method, and other advantages, rigidity of a plastic inspection wells prepared from the plastic inspection well composite material is improved significantly, and is in line with European standard BS EN 13598-2: 2009 requirements.
Description
Technical field
The present invention relates to plastic inspection well technical field, be specifically related to a kind of plastic inspection well composite and preparation method thereof.
Background technology
Perfect drainage system is the basic guarantee of modern life quality. When drainage system is not smooth, earth's surface and subsoil water, by contaminated, even can pollute clean water source, affect the health of people and cause serious harm to environment. Although people recognize the seriousness of its problem, but the phenomenon also ubiquity of Poor construction quality of terrace-bank or seepage at present, it is wherein the severely afflicated area that seepage occurs around inspection shaft. Traditional clay solid brick inspection shaft, land occupation resource, do not meet State owned land and environmental protection policy; Brick strength is low, it is easy to abrasion and corrosion occur; Well body seepage is many, polluted underground water when level of ground water is low, increases groundwater infiltration quantity during level of ground water height; Speed of application is slow, affects urban environment and traffic; Plastic tube is extremely difficult with the junction antiseepage of brick well. Adopt plastic inspection well can solve this problem preferably.
At present, domestic injection-moulded plastic inspection shaft mainly adopts high-density polyethylene resin and block copolymerization polypropylene resin, also has a small amount of community inspection shaft to adopt polyvinyl chloride resin raw material. the plastic inspection well impact resistance of PVC material is poor, and current consumption is less, and has the trend being replaced gradually. high-density polyethylene plastics inspection shaft is flexible, but rigidity is not enough. block copolymerization polypropylene plastic inspection well rigidity is better than high-density polyethylene plastics inspection shaft, but impact resistance is not as the latter. at home in existing injection-moulded plastic inspection shaft, no matter it is high-density polyethylene resin plastic inspection well, or block copolymerization polypropylene plastic inspection well, European standard BSEN13598-2:2009 can be passed through " without pressing buried row's rainwater and sewer plastic duct system not plasticized polyvinyl chloride (PVC-U) all without enterprise product, polypropylene (PP) and polyethylene (PE) Part II: commuter zone and buried manhole shaft and inspection shaft specification " in " structural intergrity " performance test, trace it to its cause is that structure there is also bigger defect, another key factor is exactly that the raw material adopted can not meet European standard to raw-material long-term behaviour requirement.
Due to a variety of causes, domestic not plastic inspection well PP Pipe Compound, ultimately result in Plastics in China inspection shaft manufacturing enterprise very chaotic on raw material is applied. The import prices of raw materials are expensive, and the enterprise adopting import material is little, and the block copolymerization polypropylene price of domestic petrochemical iy produced is relatively cheap, but performance can not meet European standard requirement.
Therefore, develop a kind of plastic inspection well composite that disclosure satisfy that European standard performance requirement and there is important economic worth and realistic meaning.
Summary of the invention
In order to solve the problems referred to above, the present invention provides a kind of plastic inspection well composite, based on the gross weight of described composite, it comprises block copolymerization polypropylene 40-70wt%, EP rubbers 5-10wt%, Pulvis Talci 10-30wt%, bamboo fibre 10-30wt%, antioxidant 0.03-0.2wt%, coupling agent 0.2-0.6wt%, maleic anhydride grafted polyethylene 0-10wt%.
Composite according to claim 1, it is characterized in that, based on the gross weight of described composite, it comprises block copolymerization polypropylene 40-70wt%, EP rubbers 5-10wt%, Pulvis Talci 10-30wt%, bamboo fibre 10-30wt%, antioxidant 0.03-0.2wt%, coupling agent 0.2-0.6wt%, described maleic anhydride grafted polyethylene 4.5-10wt%.
In the present invention, described block copolymerization polypropylene is conventional, it is possible to be arbitrary conventional polypropylene in this area. In a detailed description of the invention, in described block copolymerization polypropylene, the content of propylene construction unit is about 95%, and the content of ethylene unit unit is about 5%. In one embodiment, at least one that described block copolymerization polypropylene is selected from Yanshan Petrochemical 8303, raises in sub-petrochemical industry K8003 and Dushanzi petrochemical industry K8003.
Pulvis Talci can be the Pulvis Talci that this area is conventional, for instance plastic-grade talc powder.
In a detailed description of the invention, described maleic anhydride grafted polyethylene is maleic anhydride graft Low Density Polyethylene. In one embodiment, the percent grafting of described maleic anhydride grafted polyethylene is 0.5%-1%.
In a detailed description of the invention, described EP rubbers at least one in ethylene propylene monomer or ethylene propylene diene rubber; It is preferably selected from ethylene propylene diene rubber. The Third monomer of described ethylene propylene diene rubber can be ethylidene norbornene (ENB), dicyclopentadiene (DCPD), 1,4-hexadiene (HD), 1,7-octadiene, 6,10-dimethyl-1,5,9-11 triolefin, 3,7-dimethyl-1,6-octadiene or 5,7-dimethyl-1,6-octadiene or 7-methyl isophthalic acid, 6-octadiene etc.
In a detailed description of the invention, the length of described bamboo fibre is 80-120mm, and fineness is 4-8dtex.
In a detailed description of the invention, described coupling agent is selected from titanate coupling agent. the example of described titanate coupling agent includes tetra isopropyl two (dioctyl phosphito acyloxy) titanate esters, isopropoxy three (dioctylphosphoric acid ester) titanate esters, isopropyl three (dioctylphyrophosphoric acid acyloxy) titanate esters, isopropyl two oleic acid acyloxy (dioctyl phosphoric acid acyloxy) titanate esters, isopropyl three (isostearoyl base) titanate esters, sec.-propyl three (dioctyl phosphoric acid acyloxy) titanic acid ester, Di(dioctylpyrophosphato) ethylene titanate etc.
In a detailed description of the invention, described antioxidant can be selected from antioxidant commonly used in the art, it is preferably selected from four [��-(3,5-di-tert-butyl-hydroxy phenyl) propanoic acid] pentaerythritol resin), ��-(3,5-di-tert-butyl-hydroxy phenyl) the positive octadecanol ester of propanoic acid) and tricresyl phosphite (2,4-di-tert-butyl-phenyl) ester at least one.
The preparation method that the present invention also provides for above-mentioned plastic inspection well composite, comprises the following steps:
1) adopt described coupling agent that described bamboo fibre is processed;
2) described block copolymerization polypropylene is processed into powder, adds described antioxidant and mix, obtaining polypropylene powder;
3) described polypropylene powder is mixed with the bamboo fibre after described EP rubbers, described Pulvis Talci, process, described maleic anhydride grafted polyethylene, obtain premix material;
4) by step 3) the premix material extruding pelletization that obtains, obtain described composite.
In a detailed description of the invention, step 1) described in process and include stirring bamboo fibre 1-4 hour at 100-120 DEG C, be subsequently cooled to 55-85 DEG C, it is preferable that be cooled to 70-80 DEG C, be subsequently adding described coupling agent and mix.
Preferably, in step 4) in, extrusion temperature is 200-220 DEG C.
The present invention provides and additionally provides a kind of injection-moulded plastic inspection shaft, and it is made up of plastic inspection well composite of the present invention.
All kinds of raw materials that described composite adopts are on market common materials, wide material sources and easily purchasing. The product rigidity produced by this composite is significantly improved, and can be substantially reduced production cost.
Detailed description of the invention
Following example are used for describing in detail the present invention, but its content does not limit protection scope of the present invention.
The raw material used in embodiment:
Block copolymerization polypropylene: model K8303, Yanshan Mountain branch company of Sinopec Group produces;
Ethylene propylene diene rubber: trade mark EPDM-1045, Mitsui chemical production;
Pulvis Talci: plastic-grade talc powder, Haicheng City Zhi Cheng powder body Manufacturing Co., Ltd;
Bamboo fibre: average fineness: 6dtex, average length: 95mm, Ningbo Zhu Yuan new material company limited;
Titanate coupling agent: trade mark NXT-105, Guangzhou Yi Shenfu trade Co., Ltd;
Antioxidant: the trade mark 1010, Milan, Nanjing Chemical Co., Ltd.;
Maleic anhydride grafted polyethylene: trade mark LS-201M, Nanjing Olympic space Machinery Co., Ltd..
Performance test standard and instrument:
Stability of material: by BSEN13598-2:2009 standard testing, test instrunment be Chengde Jin Jian detecting instrument company limited produce JJRBT-1 vacuum testing machine and Shanghai ESPEC Environment Equipment Co., Ltd. produce X40 high-low temperature test chamber.
Embodiment 1
1) bamboo fibre surface treatment: under 100-120 DEG C of condition, the bamboo fibre taking 10kg puts into stirring 1h in homogenizer, is cooled to 70-80 DEG C, adds titanate coupling agent by the formula ratio of 100:1, and 5-8min is standby in stirring;
2) block copolymerization polypropylene is put into flour mill is processed into powder, add antioxidant according to the ratio of 500:1, standby after being sufficiently stirred for 5min. Bamboo fibre, maleic anhydride grafted polyethylene after same for the polypropylene powder processed ethylene propylene diene rubber, Pulvis Talci, process are once added high-speed mixer and mixing 3-5min according to the ratio of 50:5:20:20:5, standby after being sufficiently stirred for;
3) by step 1) the premix material double screw extruder melt blending extruding pelletization that obtains, screw speed is 200 revs/min, and extrusion temperature, between 200��220 DEG C, obtains the compound material of the present invention;
4) prepared composite is processed on injection machine the straight-through plastic inspection being injection molded into L-315-200, between processing temperature 210��230 DEG C. Gained sample pit shaft bellmouth wall thickness 7.0mm, well seat wall thickness 5.0mm, and connect pit shaft and arm, fully seal to air tight;
5) require to carry out stability of material test according to PPB in European standard BSEN13598-2:2009 by the sample processed. Calculation of pressure formula is-0.1 �� H/Rbar (H is Ground-water level, and R is rating factor, the R=3.4 of PPB), and as H=6m (situation that level of ground water is deep for 6m is less, belongs to relatively severe condition), test pressure is-17.6kPa. Therefore test condition is 60 DEG C ,-17.6kPa, time 1000h;
6) through test, sample does not produce crack or crazing, complies fully with the requirement to plastic inspection well in BSEN13598-2:2009.
7) sampling on the test specimen, and require to carry out material behavior test according to BSEN13598-2:2009, result is as shown in table 1.
Table 1
Data from table 1 are it can be seen that pass through the sample that this invention formula produces, the good requirement being also fully consistent with BSEN13598-2:2009 of material.
Embodiment 2
1) bamboo fibre surface treatment: under 100-120 DEG C of condition, the bamboo fibre taking 10kg puts into stirring 1h in homogenizer, is cooled to 70-80 DEG C, adds titanate coupling agent by the formula ratio of 100:1, and 5-8min is standby in stirring;
2) block copolymerization polypropylene is put into flour mill is processed into powder, add antioxidant according to the ratio of 500:1, standby after being sufficiently stirred for 5min. Bamboo fibre, maleic anhydride grafted polyethylene after same for the polypropylene powder processed Pulvis Talci, process are once added high-speed mixer and mixing 3-5min according to the ratio of 50:20:20:10, standby after being sufficiently stirred for;
3) by step 1) the premix material double screw extruder melt blending extruding pelletization that obtains, screw speed is 200 revs/min, and extrusion temperature, between 200��220 DEG C, obtains the compound material of the present invention;
4) prepared composite is processed on injection machine the straight-through plastic inspection being injection molded into L-315-200, between processing temperature 210��230 DEG C. Gained sample pit shaft bellmouth wall thickness 7.0mm, well seat wall thickness 5.0mm, and connect pit shaft and arm, fully seal to air tight;
5) require to carry out stability of material test according to PPB in European standard BSEN13598-2:2009 by the sample processed. Calculation of pressure formula is-0.1 �� H/Rbar (H is Ground-water level, and R is rating factor, the R=3.4 of PPB), and as H=6m (situation that level of ground water is deep for 6m is less, belongs to relatively severe condition), test pressure is-17.6kPa. Therefore test condition is 60 DEG C ,-17.6kPa, time 1000h;
6) through test, sample does not produce crack or crazing, complies fully with the requirement to plastic inspection well in BSEN13598-2:2009.
7) sampling on the test specimen, and require to carry out material behavior test according to BSEN13598-2:2009, result is as shown in table 2.
Table 2
As can be seen from the table, through the sample that this invention formula produces, material complies fully with the requirement of BSEN13598-2:2009.
Embodiment 3
1) bamboo fibre surface treatment: under 100-120 DEG C of condition, the bamboo fibre taking 10kg puts into stirring 1h in homogenizer, is cooled to 70-80 DEG C, adds titanate coupling agent by the formula ratio of 100:1, and 5-8min is standby in stirring;
2) block copolymerization polypropylene is put into flour mill is processed into powder, add antioxidant according to the ratio of 500:1, standby after being sufficiently stirred for 5min. Bamboo fibre after same for the polypropylene powder processed ethylene propylene diene rubber, Pulvis Talci, process is once added high-speed mixer and mixing 3-5min according to the ratio of 50:10:20:20, standby after being sufficiently stirred for;
3) by step 1) the premix material double screw extruder melt blending extruding pelletization that obtains, screw speed is 200 revs/min, and extrusion temperature, between 200��220 DEG C, obtains the compound material of the present invention;
4) prepared composite is processed on injection machine the straight-through plastic inspection being injection molded into L-315-200, between processing temperature 210��230 DEG C. Gained sample pit shaft bellmouth wall thickness 7.0mm, well seat wall thickness 5.0mm, and connect pit shaft and arm, fully seal to air tight;
5) require to carry out stability of material test according to PPB in European standard BSEN13598-2:2009 by the sample processed. Calculation of pressure formula is-0.1 �� H/Rbar (H is Ground-water level, and R is rating factor, the R=3.4 of PPB), and as H=6m (situation that level of ground water is deep for 6m is less, belongs to relatively severe condition), test pressure is-17.6kPa. Therefore test condition is 60 DEG C ,-17.6kPa, time 1000h;
6) through test, sample does not produce crack or crazing, complies fully with the requirement to plastic inspection well in BSEN13598-2:2009.
7) sample on the test specimen, and require to carry out material behavior test according to BSEN13598-2:2009, obtain result as shown in table 3.
Table 3
As can be seen from the table, through the sample that this invention formula produces, material complies fully with the requirement of BSEN13598-2:2009.
Comparative example 1
1) block copolymerization polypropylene is put into flour mill is processed into powder, add antioxidant according to the ratio of 500:1, standby after being sufficiently stirred for 5min. Same for the polypropylene powder processed ethylene propylene diene rubber, Pulvis Talci, maleic anhydride grafted polyethylene are once added high-speed mixer and mixing 3-5min according to the ratio of 60:5:30:5, standby after being sufficiently stirred for;
2) by step 1) the premix material double screw extruder melt blending extruding pelletization that obtains, screw speed is 200 revs/min, and extrusion temperature, between 200��220 DEG C, obtains the compound material of the present invention;
3) prepared composite is processed on injection machine the straight-through plastic inspection being injection molded into L-315-200, between processing temperature 210��230 DEG C. Gained sample pit shaft bellmouth wall thickness 7.0mm, well seat wall thickness 5.0mm, and connect pit shaft and arm, fully seal to air tight;
4) require to carry out stability of material test according to PPB in European standard BSEN13598-2:2009 by the sample processed. Calculation of pressure formula is-0.1 �� H/Rbar (H is Ground-water level, and R is rating factor, the R=3.4 of PPB), and as H=6m (situation that level of ground water is deep for 6m is less, belongs to relatively severe condition), test pressure is-17.6kPa. Therefore test condition is 60 DEG C ,-17.6kPa, time 1000h;
5) through test, sample breaks at 580h, does not meet the requirement to plastic inspection well in BSEN13598-2:2009.
The invention provides a kind of functional, less costly, simple plastic inspection well composite of preparation method, there is bigger market competition advantage, be worthy of popularization.
Claims (10)
1. a plastic inspection well composite, based on the gross weight of described composite, it comprises block copolymerization polypropylene 40-70wt%, EP rubbers 5-10wt%, Pulvis Talci 10-30wt%, bamboo fibre 10-30wt%, antioxidant 0.03-0.2wt%, coupling agent 0.2-0.6wt%, maleic anhydride grafted polyethylene 0-10wt%.
2. composite according to claim 1, it is characterized in that, based on the gross weight of described composite, it comprises block copolymerization polypropylene 40-70wt%, EP rubbers 5-10wt%, Pulvis Talci 10-30wt%, bamboo fibre 10-30wt%, antioxidant 0.03-0.2wt%, coupling agent 0.2-0.6wt%, described maleic anhydride grafted polyethylene 4.5-10wt%.
3. composite according to claim 1 and 2, it is characterised in that described maleic anhydride grafted polyethylene is maleic anhydride graft Low Density Polyethylene.
4. the composite according to any one of claim 1-3, it is characterised in that described EP rubbers at least one in ethylene propylene monomer and ethylene propylene diene rubber.
5. the composite according to any one of claim 1-4, it is characterized in that, described coupling agent is titanate coupling agent, it is preferably selected from tetra isopropyl two (dioctyl phosphito acyloxy) titanate esters, isopropoxy three (dioctylphosphoric acid ester) titanate esters, isopropyl three (dioctylphyrophosphoric acid acyloxy) titanate esters, isopropyl two oleic acid acyloxy (dioctyl phosphoric acid acyloxy) titanate esters, isopropyl three (isostearoyl base) titanate esters, at least one in sec.-propyl three (dioctyl phosphoric acid acyloxy) titanic acid ester and Di(dioctylpyrophosphato) ethylene titanate.
6. the composite according to any one of claim 1-5, it is characterized in that, described antioxidant is selected from four [��-(3,5-di-tert-butyl-hydroxy phenyl) propanoic acid] pentaerythritol resin), ��-(3,5-di-tert-butyl-hydroxy phenyl) the positive octadecanol ester of propanoic acid) and tricresyl phosphite (2,4-di-tert-butyl-phenyl) ester at least one.
7. the composite according to any one of claim 1-6, it is characterised in that the length of described bamboo fibre is 80-120mm, fineness is 4-8dtex.
8. a preparation method for the composite according to any one of claim 1-7, comprises the following steps:
1) adopt described coupling agent that described bamboo fibre is processed;
2) described block copolymerization polypropylene is processed into powder, adds described antioxidant and mix, obtaining polypropylene powder;
3) by described polypropylene powder and described EP rubbers, described Pulvis Talci, step 1) bamboo fibre after the process that obtains, described maleic anhydride grafted polyethylene mix, and obtains premix material;
4) by step 3) the premix material extruding pelletization that obtains, obtain described composite.
9. preparation method according to claim 8, it is characterised in that described process includes stirring described bamboo fibre 1-4 hour at 100-120 DEG C, is subsequently cooled to 55-85 DEG C, it is preferable that be cooled to 70-80 DEG C, is subsequently adding described coupling agent and stirs.
10. an injection-moulded plastic inspection shaft, it is characterised in that the composite that its composite according to any one of claim 1-7 or the preparation method described in claim 8 or 9 obtain is made.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106893244A (en) * | 2017-03-17 | 2017-06-27 | 四会市恒星智能科技有限公司 | A kind of composite plastic inspection shaft and preparation method thereof |
| CN109021385A (en) * | 2018-06-25 | 2018-12-18 | 合肥安力电力工程有限公司 | A kind of water pipe composite material and preparation method |
| CN109912888A (en) * | 2019-03-20 | 2019-06-21 | 爱驰汽车有限公司 | A kind of automobile interior decoration skeleton and its manufacturing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10331244A (en) * | 1997-06-04 | 1998-12-15 | Aron Kasei Co Ltd | Yard catch basin with small diameter made of pp |
| KR20050089464A (en) * | 2004-03-05 | 2005-09-08 | 최인택 | Plastic pipe including polypropylene and talc and manufacturing method therefore |
| CN101747645A (en) * | 2009-04-02 | 2010-06-23 | 张义卿 | Method for preparing bamboo plastic composite material |
| CN101880423A (en) * | 2010-06-30 | 2010-11-10 | 华东理工大学 | Bamboo fiber/polypropylene composite material and preparation method thereof |
| CN102558679A (en) * | 2011-12-28 | 2012-07-11 | 苏州晋圣博高分子材料科技有限公司 | Novel bamboo fiber/polypropylene composite material and method for preparing same |
| CN102977460A (en) * | 2012-12-12 | 2013-03-20 | 奇瑞汽车股份有限公司 | Injecting molding grade natural fiber composite material and preparation method thereof |
-
2014
- 2014-11-03 CN CN201410610717.8A patent/CN105623176B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10331244A (en) * | 1997-06-04 | 1998-12-15 | Aron Kasei Co Ltd | Yard catch basin with small diameter made of pp |
| KR20050089464A (en) * | 2004-03-05 | 2005-09-08 | 최인택 | Plastic pipe including polypropylene and talc and manufacturing method therefore |
| CN101747645A (en) * | 2009-04-02 | 2010-06-23 | 张义卿 | Method for preparing bamboo plastic composite material |
| CN101880423A (en) * | 2010-06-30 | 2010-11-10 | 华东理工大学 | Bamboo fiber/polypropylene composite material and preparation method thereof |
| CN102558679A (en) * | 2011-12-28 | 2012-07-11 | 苏州晋圣博高分子材料科技有限公司 | Novel bamboo fiber/polypropylene composite material and method for preparing same |
| CN102977460A (en) * | 2012-12-12 | 2013-03-20 | 奇瑞汽车股份有限公司 | Injecting molding grade natural fiber composite material and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106893244A (en) * | 2017-03-17 | 2017-06-27 | 四会市恒星智能科技有限公司 | A kind of composite plastic inspection shaft and preparation method thereof |
| CN109021385A (en) * | 2018-06-25 | 2018-12-18 | 合肥安力电力工程有限公司 | A kind of water pipe composite material and preparation method |
| CN109912888A (en) * | 2019-03-20 | 2019-06-21 | 爱驰汽车有限公司 | A kind of automobile interior decoration skeleton and its manufacturing method |
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