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High-temperature mastic cement for corrosion protection and preparation method thereof

A mastic and high-temperature technology, which is applied in the field of high-temperature mastic glue for anti-corrosion and its preparation, can solve the problems of inability to meet the long-term high-temperature operation requirements of pipelines, low peel strength and shear strength, and insufficient high-temperature performance of mastic glue. Problems, to achieve excellent adhesion and sealing, high shear strength and peel strength, good low temperature flexibility

Active Publication Date: 2013-07-03
江苏达胜热缩防护用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mastic glue has strong self-adhesiveness and good high-temperature fluidity, so the high-temperature performance of general mastic glue is relatively insufficient
At present, Jiangsu Dasheng Heat Shrinkable Materials Co., Ltd. has been developing and applying mastic glue joint anti-corrosion products. This invention is a high-temperature mastic glue product developed on the basis of normal temperature mastic glue. , to solve the problems of insufficient high-temperature performance of normal temperature products, low peel strength and shear strength, and failure to meet the requirements of high-temperature environments or long-term high-temperature operation of pipelines

Method used

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  • High-temperature mastic cement for corrosion protection and preparation method thereof
  • High-temperature mastic cement for corrosion protection and preparation method thereof
  • High-temperature mastic cement for corrosion protection and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A high-temperature mastic glue for anticorrosion is prepared from the following components:

[0029] SIS 10kg

[0030] EMH 10kg

[0031] SBS 20kg

[0032] Bitumen 10kg

[0033] Terpene resin 20kg

[0034] C5 petroleum resin 15kg

[0035] Polyisobutylene 4.5 kg

[0036] naphthenic oil 5 kg

[0037] Light calcium carbonate 5 kg

[0038] Antioxidant 1010 0.5 kg

[0039] The melt index of the SIS is 5g / 10min;

[0040] The melt index of described EMH is 100g / 10min, and wherein the mass percentage composition of maleic anhydride is 3%;

[0041] The melt index of described SBS is 2g / 10min;

[0042] The melting point of the pitch is 80°C;

[0043] The softening point of the terpene resin is 110°C;

[0044] The softening point of the C5 petroleum resin is 105°C;

[0045] The viscosity average molecular weight of the polyisobutylene is 70000.

[0046] The specific preparation method is: first take SIS, EMH, SBS, asphalt, polyisobutylene, naphthenic oil, light calciu...

Embodiment 2-6

[0048] Examples 2-6, see Table 1 for the specific components and dosage, and see Table 2 for the physical and chemical parameters of the relevant raw materials.

[0049] Table 1: The consumption table of each component in embodiment 2-6 unit: kilogram

[0050]

[0051] Table 2: Table of physical and chemical parameters of relevant raw materials in Examples 2-6

[0052]

[0053] The specific preparation method of Example 2-6 is as follows: raise the temperature of the kneader oil to 160-200°C, first add the elastomer, asphalt, filler and antioxidant into the kneader and knead and stir for 25-45 minutes, and then add the viscosity-increasing The resin and plasticizer are added into the kneader and stirred for 25-45 minutes, and then the temperature is lowered for molding treatment, and the high-temperature mastic glue for anticorrosion of the present invention is obtained.

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Abstract

The invention discloses a high-temperature mastic cement for corrosion protection and a preparation method thereof. The high-temperature mastic cement for corrosion protection is prepared from the following components in parts by weight: 30-50 parts of elastomer, 5-15 parts of asphalt, 25-40 parts of tackifying resin, 5-10 parts of plasticizer, 5-10 parts of filler and 0.2-0.5 part of antioxidant. The preparation method comprises the following steps: heating oil temperature of a kneader to 160-200 DEG C, adding the elastomer, asphalt, filler and antioxidant into a kneader, kneading and stirring for 25-45 minutes, adding the tackifying resin and plasticizer into the kneader, continuing stirring for 25-45 minutes, and cooling to form, thereby obtaining the high-temperature mastic cement forcorrosion protection. The high-temperature mastic cement for corrosion protection is used for pipeline joint coating corrosion protection, and has the excellent adhesiveness and sealability, favorable low-temperature flexibility and stable performance; and the high-temperature mastic cement for corrosion protection has the advantages of high softening point, favorable high-temperature resistance,high shear strength and high peel strength.

Description

technical field [0001] The invention relates to a pipeline anticorrosion chemical product and a preparation method thereof, in particular to a high-temperature mastic glue for anticorrosion and a preparation method thereof. Background technique [0002] As the transmission carrier of oil and gas, buried pipeline is one of the important facilities of ground engineering. It is the link connecting upstream resources and downstream users. Since the pipeline has been buried underground for a long time, as time goes by, affected by factors such as external soil characteristics and topographical settlement, the pipeline will corrode, perforate, and leak, which will bring huge damage to the country. Economic losses, and at the same time will bring serious pollution to the environment. The welding joint of the pipeline is the weakest link in the anti-corrosion of the entire pipeline, and joint anti-corrosion has become the top priority of the entire pipeline anti-corrosion technolog...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J153/02C09J123/08C09J195/00C09J145/00C09J157/02C09J11/04F16L58/10
Inventor 杨军伟饶学武
Owner 江苏达胜热缩防护用品有限公司