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Bonded polyolefine resin composition

A technology of polyolefin resin and composition, which is applied in the field of polyolefin resin composition to achieve the effects of good elongation, improved toughness and good adhesion

Active Publication Date: 2007-11-21
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The highly polar polypropylene material prepared by this invention can increase the polarity of the product, improve the surface finish of the product, maintain the excellent mechanical properties of the polypropylene raw material, and have low requirements for production equipment, but it does not involve its application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] With the dicumyl peroxide initiator, the homopolypropylene (Lanzhou Petrochemical Company F401) with a melt flow rate of 2.5g / 10min and MAH, styrene with a weight ratio of 10:1:0.25 (initiator is 0.125wt ‰) was reacted in 34 co-rotating twin-screw, the reaction temperature (°C) of each stage of the screw was 170, 180, 190, 200, 210, 210, 210, 190, 180, 170; reaction time: 6min. The grafting rate of MAH on polypropylene was determined to be 2%;

[0037] Blend in 67 co-rotating twin-screws according to the following proportions. When blending, add primary antioxidant 1010 and secondary antioxidant 168 (both produced by Jinhai Yabao), and their dosages account for 0.5‰ of the total mass of the composition. and 1‰. The temperature (℃) of each section of the screw is: 200, 210, 220, 230, 230, 240, 230, 220, and the screw speed is 60 rpm. The performance test results of the obtained products are shown in Table 1.

[0038] Polypropylene-g-MAH 5

[0039] Polypropylene (me...

Embodiment 2

[0055] With dicumyl peroxide as the initiator, block polypropylene (Yanshan Petrochemical 7726) with a melt flow rate of 28g / 10min and MAH, styrene in a weight ratio of 10:1:0.25 (the initiator is 0.125wt‰ ) was reacted in a co-rotating twin-screw at 34, the reaction temperature (°C) of each section of the screw was 170, 180, 190, 200, 210, 210, 210, 190, 180, 170; reaction time: 6min, MAH relative grafting 4% grafted polypropylene;

[0056] Blend in 67 co-rotating twin-screws according to the following proportions. When blending, add primary antioxidant 1010 and secondary antioxidant 168 (both produced by Jinhai Yabao), and their dosages account for 0.5‰ of the total mass of the composition. and 1‰. The temperature (℃) of each section of the screw is: 200, 210, 220, 230, 230, 240, 230, 220, and the screw speed is 60 rpm. The performance test results of the product are shown in Table 1.

[0057] Polypropylene-g-MAH 20

[0058] Polypropylene (melt flow rate 28g / 10min) 28 ...

Embodiment 3

[0064] Use block polypropylene (Yanshan Petrochemical 7726) with a melt flow rate of 28g / 10min to MAH and styrene at a weight ratio of 10:1:0.25 (the initiator is 0.125wt‰) in a 2L three-necked flask with xylene. Solvent reaction temperature 100 (°C); reaction time: 2h solution grafting, grafted polypropylene with a relative grafting rate of MAH of 7%;

[0065] Blend in 67 co-rotating twin-screws according to the following proportions. When blending, add primary antioxidant 1010 and secondary antioxidant 168 (both produced by Jinhai Yabao), and their dosages account for 0.5‰ of the total mass of the composition. and 1‰. The temperature (℃) of each section of the screw is: 200, 210, 220, 230, 230, 240, 230, 220, and the screw speed is 60 rpm. The performance test results of the product are shown in Table 1.

[0066] Polypropylene-g-MAH 28

[0067] Polypropylene (melt flow rate 2.5g / 10min) 20 Lanzhou Petrochemical F401

[0068] LLDPE (melt flow rate 1.0g / 10min) 25 Lanzhou P...

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Abstract

An adhesive poly-olefin resin composite consists of grafted polypropylene 0.1-40 wt% ( MFR 1-40 wt%), polypropylene 20-48 wt% ( MFR 0.3-40 wt%), linear low-density polythene 20-40 wt% ( MFR 0.8-10 wt%), high-density polypropylene 10-30 wt% ( MFR 2-5 wt%), multi-polymer of ethylene and octane 1-20 wt% in proportion of 1:1 ( MFR 0.5-30 wt%) and polystyrene 1-10 wt%. Grafted polypropylene is unsaturated carboxylic acid, anhydride or carboxylic ester as the first grafting monomer, styrene is the second grafting monomer, the grafting rate of unsaturated carboxylic acid, anhydride or carboxylic ester of polypropylene is 1-10 wt%. It has excellent binding performance with steel, iron and aluminum, peeling strength is >=80 N / 10 mm, and softening point is >=120 degree(GB 1613-90). It can be used for chemical container and pipeline.

Description

technical field [0001] The present invention relates to a polyolefin resin composition, in particular to an adhesive polyolefin resin composition with polypropylene resin as the main component and having high peel strength. Background technique [0002] At present, there are many kinds of plastic anti-corrosion materials used in chemical industry, oil field, machinery, construction and other fields, such as epoxy resin and polyester resin. However, this type of resin is a thermosetting resin, and its processing is difficult. As a thermoplastic, polypropylene has the advantages of excellent physical and mechanical properties, easy molding and processing, and low density. The compatibility with inorganic fillers or metals is poor, which limits the application of polypropylene in this field. It is a simple way to expand the use of polypropylene materials by polarizing polypropylene melt-grafted monomers, utilizing the polarity and reactivity of polar groups, improving its per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/06C08L51/06C08L23/08
Inventor 曾琛金鼎铭景喜林段宏义殷茜孙世平杨世元乔彤森竺栋荣张立基
Owner PETROCHINA CO LTD
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