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Crosslinked polypropylene viscoelastic composite coating and preparation method thereof

A technology of cross-linked polypropylene and composite coatings, applied in anti-corrosion coatings, coatings, etc., can solve the problems of not being able to apply high-temperature medium anti-corrosion environments, increase process and cost, consume large energy, etc., and achieve high acid and alkali resistance and environmental protection Advantages, moderate price, excellent effect of anti-corrosion and barrier properties

Inactive Publication Date: 2014-03-19
天津市华鑫达投资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The diffusion speed of water in non-hydrophilic high polymers such as polyethylene is slow, and the thicker the product, the longer the time required for crosslinking, which requires a lot of energy consumption, which has brought great challenges to the industrialization of silane crosslinked polyolefins. Inconvenient, increased process and cost
In addition, regardless of the cross-linked polyethylene of the peroxide process or the silane process, due to the inherent properties of the base resin polyethylene, although the anti-corrosion coating will not melt at high temperatures, it will still become soft, and even shelling will occur. Can not be used in anti-corrosion environment of high temperature medium

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1: A component is made up of the following raw materials measured according to parts by mass:

[0046] Polypropylene copolymer 100

[0047] 2,5-Dimethyl-2,5-bis-tert-butylperoxyhexane 0.15

[0048] Vinyltriethoxysilane 5

[0049] Odorless polypropylene grafted maleic anhydride 12

[0050] Ethylene-Octene Copolymer 4

[0051] Oxazoline 0.4.

[0052] Component B consists of the following raw materials measured in parts by mass:

[0053] Polypropylene copolymer 100

[0054] Nano-scale boron nitride (fineness 10000 mesh) 8

[0055] Ethylene bis-stearamide 0.8

[0056] γ-Glycidyl ether oxypropyltrimethoxysilane 0.5

[0057] Dibutyltin dilaurate 0.8

[0058] Aluminum hydroxide (with crystal water) 2.5

[0059] Compound Antioxidant 0.3.

[0060] The composite antioxidant is mixed with phosphite antioxidant 168 and hindered phenol antioxidant 1010 in a weight ratio of 1:0.3.

[0061] The preparation method of the cross-linked polypropylene v...

Embodiment 2

[0068] Embodiment 2: A component is made up of the following raw materials measured according to parts by mass:

[0069] Polypropylene homopolymer 100

[0070] 2,5-Dimethyl-2,5-bis-tert-butylperoxyhexane 0.08

[0071] Vinyltrimethoxysilane 3

[0072] Odorless polypropylene grafted maleic anhydride 15

[0073] Ethylene-Octene Copolymer 6

[0074] Oxazoline 0.15.

[0075] Component B consists of the following raw materials measured in parts by mass:

[0076] Polypropylene homopolymer 100

[0077] Nano-scale silicon carbide (fineness 10000 mesh) 4

[0078] Calcium stearate 0.5

[0079] γ-Aminopropyltriethoxysilane 0.3

[0080] Dibutyltin dilaurate 0.4

[0081] Aluminum hydroxide (with crystal water) 1.5

[0082] Compound Antioxidant 0.3.

[0083] The composite antioxidant is mixed with phosphite antioxidant 168 and hindered phenol antioxidant 1010 in a weight ratio of 1:0.5.

[0084] The preparation method of the cross-linked polyprop...

Embodiment 3

[0091] Embodiment three: A component is made up of the following raw materials measured according to parts by mass:

[0092] Polypropylene homopolymer 100

[0093]Dicumyl peroxide 0.12

[0094] Vinylmethyldimethoxysilane 4

[0095] Odorless polypropylene grafted maleic anhydride 12

[0096] Styrene-butadiene copolymer 6

[0097] Oxazoline 0.2

[0098] Component B consists of the following raw materials measured in parts by mass:

[0099] Polypropylene homopolymer 100

[0100] Nano-scale aluminum nitride (fineness 10000 mesh) 3

[0101] Ethylene bis-stearamide 0.4

[0102] γ-Aminopropyltriethoxysilane 0.3

[0103] Dibutyltin dilaurate 0.4

[0104] Polyvinyl alcohol 1.2

[0105] Compound antioxidant 0.4

[0106] The composite antioxidant is mixed with phosphite antioxidant 168 and hindered phenol antioxidant 1010 in a weight ratio of 1:0.3.

[0107] The preparation method of the cross-linked polypropylene viscoelastic composite coating is carried out according to...

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Abstract

The invention relates to a crosslinked polypropylene viscoelastic composite coating and a preparation method thereof. The coating is prepared from components A and B by mixing, and the weight ratio of the component A to the component B is 9:1; the component A comprises the following ingredients in parts by mass: 100 parts of polypropylene, 0.05-0.2 part of an initiator, 10-20 parts of a graft, 3-5 parts of silane, 3-8 parts of an elastomer, and 0.1-0.5 part of a grafting aid; the component B comprises the following ingredients in parts by mass: 100 parts of polypropylene, 2-10 parts of a heat conducting agent, 0.1-1 part of a dispersing lubricant, 0.3-0.5 part of a surface treatment agent, 0.4-1 part of a catalyst, 1-3 parts of a dehydrating agent, and 0.1-0.4 part of an antioxidant. A base resin of the composite coating is crosslinking polypropylene which both ensures the sufficient crosslinking efficiency and reduces the crystallinity and shrinkage distortion arising from the reduction of the crystallinity in comparison with currently used crosslinking polyethylene, and a crosslinked material has excellent rigidity and hardness and also has excellent toughness and creep resistance.

Description

technical field [0001] The invention relates to anti-corrosion coatings, in particular to a cross-linked polypropylene viscoelastic composite coating and a preparation method thereof. Background technique [0002] With the development of the economy, chemical, petroleum, shipbuilding, power plants, public utilities and other industries have increasingly urgent requirements for anti-corrosion such as pipelines and pumps, and their grades have been continuously improved. Patent CN922397360.9 discloses a preparation method of a steel-plastic integrally bonded anti-corrosion pipeline and a container. The pipeline and container are composed of a steel body and a thermoplastic layer, and have the advantages of firm steel-plastic bonding and good anti-corrosion performance. Chemical, metallurgy and other fields. However, ordinary single-layer thermoplastic anti-corrosion lining cannot meet the requirements in demanding application fields (high temperature strong alkali corrosion, ...

Claims

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Application Information

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IPC IPC(8): C09D151/06C09D123/14C09D123/12C09D151/00C09D7/12C09D5/08C08F255/02C08F230/08C08F285/00C08J3/24
Inventor 李云岩许华郭洪涛刘学武尹聪
Owner 天津市华鑫达投资有限公司
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