CN1300785A - Process for preparing special material by radiation technique for blow injection of car's fender guard - Google Patents
Process for preparing special material by radiation technique for blow injection of car's fender guard Download PDFInfo
- Publication number
- CN1300785A CN1300785A CN 99117467 CN99117467A CN1300785A CN 1300785 A CN1300785 A CN 1300785A CN 99117467 CN99117467 CN 99117467 CN 99117467 A CN99117467 A CN 99117467A CN 1300785 A CN1300785 A CN 1300785A
- Authority
- CN
- China
- Prior art keywords
- polyethylene
- parts
- bumper
- adopt
- irradiation
- 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.)
- Granted
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A process for preparing the special material used to make car's fender guard by blow forming features that after the polyethylene is radiated by gamma ray or electronic beam, the oxygen-contained polar radicals can be introduced to its molecular chain, and when it is mixed with sericite-tridymite-cristobalite, Mg(OH)2, CaCO3 and wollastonite, the hydrogen bond binding or other chemical reaction can take place to improve the interaction between interfaces and the mechanical performance of system.
Description
The present invention relates to the polyolefinic new technology of a kind of preparation high-performance, belong to polymer processing field.
The forming technique of bumper mainly contains two kinds of injection moulding and extrusion and blow moldings.The car collision bumper generally adopts the material and the injection molding process of high workability, a kind of injection moulding material dedicated for bumper Keltan TP 0552/2 that for example Dutch DSM N. V. produced.Injection moulding machine and forming mould investment are big, and the product shock resistance is lower.Compare with injection moulding, the extrusion and blow molding technology has the following advantages:
1. collision bumper can be designed to the double walled hollow structure, and overlay is smooth smooth, and supporting layer can be designed to corrugated
Make product have higher rigidity and flexural strength.
2. positive layer does not exist the defectives such as the hole phenomenon of collapsing that materials flow fusion seam and stiffening web are caused, visual appearance height.
3. moulding process can under low pressure be carried out, and residualinternal stress is less, the shock resistance height.
4. facility investment is less, and mould structure is simple, makes easily.
Adopting the extrusion and blow molding technology to produce bumper must adopt low melt index (＜1g/10min) resin dedicated to guarantee that melt has enough tension force avoids parison the excessive sag phenomenon to occur in push.The polythene material that is suitable for the collision bumper of blow molding does not at present see that report is arranged.
The objective of the invention is at prior art open question and a kind of method that adopts irradiation technique to prepare the extrusion and blow molding material dedicated for bumper is provided still, being characterized in will be through the polyethylene and the mineral filler blend of irradiation, because the sub polyethylene subchain has been introduced into and has contained the oxygen polar group in the irradiation process, strengthened the interface compatibility of co-mixing system, the over-all properties of co-mixing system is improved.
The objective of the invention is to adopt following technical measures to realize:
1. the preparation of irradiated polyethylene
Adopt
60Co gamma-radiation source or electron electrostatic accelerator at room temperature carry out irradiation to polythene material in the air, and irradiation dose is 1～50kGy, introduce C=O isopolarity group on its molecular chain.
2. the preparation of extrusion and blow molding material dedicated for bumper
With 85～30 parts of polyethylene, 5～30 parts and 10～40 parts sericite-tridymite-cristobalites of irradiated polyethylene, Mg (OH)
2, CaCO
3And/or wollastonite, at least a, adopt double-screw extruding pelletizing, each section temperature is respectively 100～110 ℃, 130～150 ℃, 170～190 ℃, 170～190 ℃, 170～185 ℃ of head temperatures.
Experimental result shows, the material dedicated for bumper that this method makes has good comprehensive performances, performances such as its notched Izod impact strength (particularly-40 ℃), yield strength, elongation at break, modulus in flexure, heat-drawn wire all are better than the present material dedicated for bumper salable of Dutch DSM N. V. (Keltan TP 0552/2) index, detailed being shown in Table 1.
The present invention has following advantage:
Technology is simple, cleaning, pollution-free, and the PP Pipe Compound that makes has excellent mechanical property, and cost is lower, can be applied aspect bumper.
Embodiment:
Below by embodiment the present invention is specifically described; be necessary to be pointed out that at this following examples only are used for the present invention is further specified; can not be interpreted as limiting the scope of the invention, the person skilled in the art in this field can make some nonessential improvement and adjustment to the present invention according to the invention described above content.
1. adopt JJ-2 type electrostatic accelerator, at room temperature in the air polyethylene is carried out irradiation, irradiation dose is 40kGy.Again with 35 parts of polyethylene, 30 parts of irradiated polyethylenes and 35 parts of CaCO
3Use double-screw extruding pelletizing, each section temperature is respectively 110 ℃, 140 ℃, 190 ℃, 190 ℃, 185 ℃ of head temperatures.
2. adopt right cylinder formula 50000 Ci
60Irradiation is at room temperature carried out to polyethylene in the air in Co gamma-radiation source, and irradiation dose is 30Gy.Again 45 parts of polyethylene, 25 parts of irradiated polyethylenes and 30 parts of sericite-tridymite-cristobalites are respectively 110 ℃, 140 ℃, 190 ℃, 190 ℃ with each section of double-screw extruding pelletizing temperature, 185 ℃ of head temperatures.
3. adopt right cylinder formula 50000 Ci
60Irradiation is at room temperature carried out to polyethylene in the air in Co gamma-radiation source, and irradiation dose is 50kGy.Again with 40 parts of polyethylene, 20 parts of irradiated polyethylenes and 40 parts of Mg (OH)
2Use double-screw extruding pelletizing, each section temperature is respectively 110 ℃, 140 ℃, 190 ℃, 190 ℃, 185 ℃ of head temperatures.
Table 1 extrusion and blow molding bumper material and DSM N. V.'s bumper special material performance be the performance polyethylene bumper special material Keltan TP of DSM N. V. 0552/2 (extrusion and blow molding) (injection moulding) relatively
Melting index 0.40g/10min. 7.0g/10min.
Tensile yield strength 20MPa 17MPa
Elongation at break 532% 475%Izod socle girder notched Izod impact strength
23℃ 70kJ/m
2 ＞60kJ/m
2
0℃ 71kJ/m
2 ＞60kJ/m
2
-20℃ 69kJ/m
2 ＞60kJ/m
2
-40℃ 70kJ/m
2 ＞10kJ/m
2
Modulus in flexure 1.25GPa 0.7GPa
71 ℃ 62 ℃ of heat-drawn wires
121 ℃ 115 ℃ of Vicat softening points
Shore hardness D62 D53
Claims (2)
- Adopt irradiation technique to prepare the method for extrusion and blow molding material dedicated for bumper, it is characterized in that:1. the preparation of irradiated polyethyleneAdopt 60Co gamma-radiation source or electron electrostatic accelerator at room temperature carry out irradiation to polyethylene in the air, and irradiation dose is 1～50kGy, and on its molecular chain, introduce C=O etc. and contain the oxygen polar group,
- 2. the preparation of extrusion and blow molding material dedicated for bumperWith 85～30 parts of polyethylene, 5～30 parts and 10～40 parts sericite-tridymite-cristobalites of irradiated polyethylene, Mg (OH) 2, CaCO 3And/or wollastonite, at least a, adopt double-screw extruding pelletizing, each section temperature is respectively 100～110 ℃, 130～150 ℃, 170～190 ℃, 170～190 ℃, 170～185 ℃ of head temperatures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99117467 CN1113897C (en) | 1999-12-22 | 1999-12-22 | Process for preparing special material by radiation technique for blow injection of car's fender guard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99117467 CN1113897C (en) | 1999-12-22 | 1999-12-22 | Process for preparing special material by radiation technique for blow injection of car's fender guard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1300785A true CN1300785A (en) | 2001-06-27 |
| CN1113897C CN1113897C (en) | 2003-07-09 |
Family
ID=5280090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99117467 Expired - Fee Related CN1113897C (en) | 1999-12-22 | 1999-12-22 | Process for preparing special material by radiation technique for blow injection of car's fender guard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1113897C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100415473C (en) * | 2002-04-18 | 2008-09-03 | 提克纳有限公司 | Filled granulates consisting of high or ultra-high molecular weight polyethylenes and method for producing said granulates |
| CN106346634A (en) * | 2016-08-31 | 2017-01-25 | 浙江世博新材料股份有限公司 | Method for preparing regenerated plastic particles by using waste cloth and regenerated plastic particles |
-
1999
- 1999-12-22 CN CN 99117467 patent/CN1113897C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100415473C (en) * | 2002-04-18 | 2008-09-03 | 提克纳有限公司 | Filled granulates consisting of high or ultra-high molecular weight polyethylenes and method for producing said granulates |
| CN106346634A (en) * | 2016-08-31 | 2017-01-25 | 浙江世博新材料股份有限公司 | Method for preparing regenerated plastic particles by using waste cloth and regenerated plastic particles |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1113897C (en) | 2003-07-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1149232C (en) | Polyolefins and method for the production thereof | |
| EP1394197B1 (en) | Highly viscous moulding materials with nanoscale fillers | |
| DE60216506T3 (en) | NANO COMPOSITION COMPOSITION WITH SUPERSPER PROPERTY | |
| EP1963067B1 (en) | Compositions obtained from recycled polyolefins | |
| US4847317A (en) | Filled thermoplastic polymer compositions | |
| CN109093978B (en) | High-stretch-ratio film and production method thereof | |
| EP0533304A1 (en) | Polyester-polyolefin blends containing a functionalized elastomer | |
| KR20110138217A (en) | Method for the preparation of a heterophasic copolymer and uses thereof | |
| WO2014186381A9 (en) | Single pellet polymeric compositions | |
| WO2009057131A2 (en) | Polyolefin composition having high melt strength | |
| CN114591587B (en) | Polystyrene composite material and preparation method thereof | |
| CN115160688B (en) | Flame-retardant polypropylene composite material for battery pack upper cover of new energy automobile and preparation method thereof | |
| WO1993002141A1 (en) | Recycling of polyvinylbutyral | |
| CN111892794A (en) | PBAT-talcum powder full-biodegradable blend and preparation method thereof | |
| CN1113897C (en) | Process for preparing special material by radiation technique for blow injection of car's fender guard | |
| CA2270515A1 (en) | Process for making multiphase polymeric film having a laminar structure with controlled permeability and/or controlled mechanical properties | |
| CN111218727B (en) | In-situ EPDM microfiber reinforced polylactic acid composite material and preparation method and application thereof | |
| CN1845963A (en) | Glass-filled prolylene polymer composition | |
| CN109177400B (en) | High tensile strength film and production method thereof | |
| CN1228374C (en) | Composite polyolefine thermoplastic vulcanizate | |
| CN110760129A (en) | Polypropylene material with low linear expansion coefficient and preparation method thereof | |
| CN113388192B (en) | High-toughness low-temperature-resistant high-gloss regenerated PP modified material and preparation method thereof | |
| JP2004160669A (en) | Multilayered blow molded product made of recovered polyester resin, its molding method, and blow molding machine | |
| CN1067702C (en) | Isolation-type polyolefin multicomponent composite and preparation | |
| JP3797750B2 (en) | Multi-layer blow container |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |