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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 preventing damage, increasing grafting rate, and reducing degradation reactions

Active Publication Date: 2009-12-23
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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  • Bonded polyolefine resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 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 ‰)exist Reaction in the co-rotating twin-screw, the reaction temperature (°C) of each stage of the screw is 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%;

[0036] According to the following ratio in Blending in co-rotating twin-screws, adding primary antioxidant 1010 and secondary antioxidant 168 (both produced by Jinhai Yabao) during the blending, and their dosage accounts for 0.5‰ and 1‰ of the total mass of the composition, respectively. 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.

[0037] Polypropylene-g-MAH 5

[00...

Embodiment 2

[0054] 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‰ )exist Reaction in the co-rotating twin-screw, the reaction temperature (°C) of each section of the screw is 170, 180, 190, 200, 210, 210, 210, 190, 180, 170; reaction time: 6min, MAH relative grafting rate is 4% grafted polypropylene;

[0055] According to the following ratio in Blending in co-rotating twin-screws, adding primary antioxidant 1010 and secondary antioxidant 168 (both produced by Jinhai Yabao) during the blending, and their dosage accounts for 0.5‰ and 1‰ of the total mass of the composition, respectively. 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.

[0056] Polypropylene-g-MAH 20

[0057] Polypropylene (melt ...

Embodiment 3

[0063] 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%;

[0064] According to the following ratio in Blending in co-rotating twin-screws, adding primary antioxidant 1010 and secondary antioxidant 168 (both produced by Jinhai Yabao) during the blending, and their dosage accounts for 0.5‰ and 1‰ of the total mass of the composition, respectively. 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.

[0065] Polypropylene-g-MAH 28

[0066] Polypropylene (melt flow rate 2.5g / 10min) 20 Lanzhou Petrochemical F401

[0067] LLDPE (melt flow rate 1.0g / 1...

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Abstract

The invention discloses a cohesive polyolefin resin composition. Taking the weight of the composition as a percentage, the main components are: (1) 0.1-40% grafted polypropylene, MFR: 1-40; (2) 20-40% 48% polypropylene, MFR: 0.3-40; (3) 20-40% linear low-density polyethylene, MFR: 0.8-10; (4) 10-30% high-density polyethylene, MFR: 2-5; (5 ) 1-20% ethylene and octene copolymer, ethylene and octene 1:1 copolymerization, MFR: 0.5-30; (6) 1-10% polystyrene; among them, grafted polypropylene is based on unsaturated carboxylic acid , acid anhydride or carboxylate is the first grafting monomer, styrene is the second grafting monomer, and the grafting rate of unsaturated carboxylic acid, acid anhydride or carboxylate on polypropylene is 1% to 10%. . The resin composition of the present invention shows good adhesion to metal materials such as steel, iron, aluminum, etc., its peel strength is ≥80N / 10mm, and the Vicat softening point of the material is ≥120°C (GB 1613-90) to meet the requirements of chemical industry High temperature requirements for containers and pipelines.

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 Patents(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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