CN101993564A - Method for preparing polypropylene material special for automobile instrument panel - Google Patents
Method for preparing polypropylene material special for automobile instrument panel Download PDFInfo
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- CN101993564A CN101993564A CN 200910113431 CN200910113431A CN101993564A CN 101993564 A CN101993564 A CN 101993564A CN 200910113431 CN200910113431 CN 200910113431 CN 200910113431 A CN200910113431 A CN 200910113431A CN 101993564 A CN101993564 A CN 101993564A
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Abstract
The invention provides a method for preparing a polypropylene material special for an automobile instrument panel, belonging to the technical field of polymer composite materials special for automobiles. Copolymer polypropylene is used as basic resin, and polystyrene with high impact resistance, maleic anhydride graft as a compatilizer and talcum powder as an inorganic filling material are used for increasing compatibility among materials and system modulus, reducing forming shrinkage, improving thermal stability and reducing cost. A toughening agent is used for blending and toughening, and the processing flowability is adjusted by processing modified master batch so as to achieve energy saving and environmental protection and meet the requirements on the polypropylene material special for the automobile instrument panel. The main performance indexes of the automobile instrument panel polypropylene special material are as follows: the melt flow rate is 6.0 g/10 min, the tensile strength is 23.5 Mpa, the impact strengths of a cantilever beam are respectively 161 J/m and 63.8 J/m as 23 DEG C and -20 DEG C, the elongation at break is 172%, the forming shrinkage is 0.82%, and the thermal deformation temperature is 114 DEG C.
Description
Technical field
The present invention relates to a kind of preparation method of automobile instrument plate polypropylene dedicated material, belong to the automobile specified technical field of polymer composite materials.
Background technology
Along with the Chinese society rapid economy development, China's car has begun to enter on a large scale household application in recent years, 2009, from present sale of automobile quantity statistics, China has become global automobile Primary Market, along with country's on January 14th, 2009 " automobile industry adjustment and development planning " takes the lead in putting into effect, the critical role and the unprecedented attention of country to automobile industry of automobile industry has been described simultaneously.The major objective of world car industrial development direction is at present: save energy prevents environmental degradation, improves safety performance.Be that theme is " energy-conservation ", " environmental protection ", " safety ".As the main raw that constitutes automobile, the application level of plastics is directly connected to this three big theme, and a large amount of use plastics not only can be realized lightweight on automobile, also can reach the target of aspect such as safe, anticorrosion, comfortable, and help reducing cost.Modified polypropene is used in automotive industry, is that kind or quantity all are fastest-rising in the automotive plastic, and the used polypropylene of each automobile of Europe accounts for 28.1% of used plastics total amount, and Japan is 28.8%, occupies first of the various plastics.Along with the fast development of China's automobile industry and the acceleration of plastic components localization process,, simultaneously higher performance requriements has been proposed also automobile polypropylene for automobile polypropylene development of Special and production provide vast market.China has carried out a large amount of research and development and marketization work to the modified polypropylene automotive PP Pipe Compound in recent years, and obtained certain effect, the PP Pipe Compound variety range progressively enlarges, and automobile enterprise has obtained applications well at home, but the existing market breach is still very big.
Following several method is mainly adopted in present automobile-used pp material production: modification by copolymerization, physically modified, and inorganic filling-modified etc.Modification by copolymerization is when heavy catalyzer still has activity in the homopolymer polypropylene in the polymeric kettle, add second, third component (ethene, butylene, hexene, octene etc.), the performance of copolymer that obtains like this is close with the polyblend performance, adopt two step polyphone vapour phase polymerization technology as BASF, ethylene content, control second monomer introduction PP macromole connect mode in the raising multipolymer, obtain rigidity, toughness all than the isostatic polypropylene material.Physically modified is a blending and modifying, promptly carries out mechanical blending with multiple polymers, makes the resin material of polypropylene-like alloy, reaches the purpose of modification, and technology is simple.Filling-modified its effect is suitably to reduce product cost on the one hand, on the other hand, also is prior reason, be the performance that significantly to improve some aspect of polypropylene,, can also reduce the product molding shrinking percentage as hardness, thermotolerance, increase dimensional stability, the product wear resistance is also had improvement.Inorganic filling can not only improve the dyeability of goods, can also reduce the cost of product effectively.
Research contents
The objective of the invention is to adopt polypropene blended capacity increasing modifying approach, with second third block copolymerization polypropylene is base resin, utilization increases consistency and the system modulus between firm agent (impact polystyrene HIPS), compatilizer (maleic anhydride grafts) and the mineral filler talcum powder raising material, reduce molding shrinkage, improve thermostability and reduce cost; Utilize toughner blending toughening, processing modified masterbatch to regulate processing fluidity, thereby reach energy-saving and environmental protection, safety and satisfy the requirement of automobile instrument panel polypropylene dedicated material technical indicator.
Technical scheme of the present invention: with second third block copolymerization polypropylene is base resin, by adding a certain proportion of functional blend components toughner (POE), increase firm agent (impact polystyrene HIPS), compatilizer (maleic anhydride grafts), oxidation inhibitor (AT-215), UV light absorber (UV326), rheology modifier two (tert-butyl hydroperoxide sec.-propyl) benzene and auxiliary agent (talcum powder), mix, by the twin screw extruder extruding pelletization, dry again.
Preparation manipulation step: be carrier by the homo-polypropylene resin in advance, with the rheology modified masterbatch of rheology modifier two (tert-butyl hydroperoxide sec.-propyl) benzene preparation processing (concentration control 5%).With anti-impact second third block copolymerization polypropylene is base resin, add successively then a certain proportion of by the good talcum powder of titanate coupling agent pre-treatment (1250 order), toughner POE, increase functional blend components such as firm agent impact polystyrene, compatilizer maleic anhydride grafts, oxidation inhibitor AT-215, ultraviolet absorbent uv-326, the rheology modified masterbatch of processing and mix, by twin screw extruder extruding pelletization under 180 ℃～240 ℃ conditions, oven dry makes.
Adopt the automobile instrument panel polypropylene dedicated material main performance index of present method preparation: MFR (melt flow rate (MFR)) is 6.0g/10min, tensile strength is 23.5Mpa, be respectively 161J/m, 63.8J/m when 23 ℃ of cantilever beam impact strengths and-20 ℃, elongation at break is 172%, molding shrinkage is 0.82%, and no variable color and seminess behind the anti-aging intensity 300h, flexural strength are 30.2MPa, heat-drawn wire is 114 ℃, 147 ℃ of Vicat softening point positions.
Claims (5)
1. the preparation method of an automobile instrument panel polypropylene dedicated material, it is characterized in that this PP Pipe Compound is base resin with the Co-polypropylene, and by add a certain proportion of functional blend components toughner, increase firm agent, compatilizer, oxidation inhibitor, UV light absorber, the rheology modified masterbatch of processing and auxiliary agent (talcum powder) mix, by twin screw extruder extruding pelletization under 180 ℃～240 ℃ conditions, oven dry is prepared from.
2. press the preparation method of claims 1 described automobile instrument panel polypropylene dedicated material, it is characterized in that described toughner is POE, to increase firm agent be that impact polystyrene, compatilizer are that maleic anhydride grafts, oxidation inhibitor are that AT-215, UV light absorber are that UV-326, rheology modifier are that two (tert-butyl hydroperoxide sec.-propyl) benzene and auxiliary agent are talcum powder (1250 order).
3. press the preparation method of claims 1 described automobile instrument panel polypropylene dedicated material, it is characterized in that the rheology modified masterbatch of described processing adopts special complete processing to implement modification and handles, concrete steps are carrier for the homo-polypropylene resin, be prepared into the high density processing masterbatch with rheology modifier two (tert-butyl hydroperoxide sec.-propyl) benzene, concentration control 5%, quantitatively mix adding to that prepared in reaction is to regulate the PP Pipe Compound flowability in the extruder barrel in the PP Pipe Compound preparation process, processing rheology modified masterbatch add-on is 0.175%～0.23% of the anti-impact second third block copolymerization polypropylene content.
4. press the preparation method of claims 1 described automobile instrument panel polypropylene dedicated material, it is characterized in that described talcum powder carries out pre-treatment by titanate coupling agent, improve consistency with anti-impact second third block copolymerization polypropylene.
5. press the preparation method of claims 1 described automobile instrument panel polypropylene dedicated material, it is characterized in that containing in the described polypropylene dedicated material prescription:
5.1 the anti-impact second third block copolymerization polypropylene content is 35%～45%, toughner POE content is 8%～12%, increase firm agent impact polystyrene content and be 25%～35%, compatilizer maleic anhydride grafts content is 3%～6%, talcum powder content is 13%～17%;
5.2 oxidation inhibitor AT-215 content is 0.1%～0.3% (in total amount), ultraviolet absorbent uv-326 content is 0.13%～0.17% (in total amount), and plasticizer loading is 0.13%～0.17% (in total amount).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910113431 CN101993564A (en) | 2009-08-24 | 2009-08-24 | Method for preparing polypropylene material special for automobile instrument panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910113431 CN101993564A (en) | 2009-08-24 | 2009-08-24 | Method for preparing polypropylene material special for automobile instrument panel |
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| Publication Number | Publication Date |
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| CN101993564A true CN101993564A (en) | 2011-03-30 |
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| CN 200910113431 Pending CN101993564A (en) | 2009-08-24 | 2009-08-24 | Method for preparing polypropylene material special for automobile instrument panel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104109289A (en) * | 2014-08-05 | 2014-10-22 | 广州石头造环保科技有限公司 | High-filling injection molding material composition and preparation method thereof |
| CN106009312A (en) * | 2016-07-06 | 2016-10-12 | 江苏金发科技新材料有限公司 | Modified polypropylene and polystyrene alloy material and preparation method thereof |
| CN106700253A (en) * | 2016-12-14 | 2017-05-24 | 广东圆融新材料有限公司 | Low shrink and low density PP material and preparation method thereof |
| CN107955262A (en) * | 2017-11-28 | 2018-04-24 | 安徽伟合电子科技有限公司 | A kind of automobile instrument panel PP composite material |
-
2009
- 2009-08-24 CN CN 200910113431 patent/CN101993564A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104109289A (en) * | 2014-08-05 | 2014-10-22 | 广州石头造环保科技有限公司 | High-filling injection molding material composition and preparation method thereof |
| CN106009312A (en) * | 2016-07-06 | 2016-10-12 | 江苏金发科技新材料有限公司 | Modified polypropylene and polystyrene alloy material and preparation method thereof |
| CN106700253A (en) * | 2016-12-14 | 2017-05-24 | 广东圆融新材料有限公司 | Low shrink and low density PP material and preparation method thereof |
| CN106700253B (en) * | 2016-12-14 | 2019-03-01 | 广东圆融新材料有限公司 | A kind of low-contraction low-density PP material and preparation method thereof |
| CN107955262A (en) * | 2017-11-28 | 2018-04-24 | 安徽伟合电子科技有限公司 | A kind of automobile instrument panel PP composite material |
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Application publication date: 20110330 |