Environment-friendly composite material applied to heat preservation of pipeline and preparation method thereof

A pipe insulation and environmental protection technology, applied in the direction of pipeline protection, heat preservation, pipeline protection through heat insulation, etc., can solve the problems of flammability and explosion, poor heat preservation, influence on promotion, etc., achieve easy operation, improve fluidity, and product quality stable effect

Inactive Publication Date: 2011-08-31
山东东大聚合物股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] (Cyclopentane) is easy to obtain and low in price, but it is flammable, explosive, and poor in heat preservation, while 1,1,1,3,3-pentafluorobutane and 1,1,1,2,3,3,3 -The mixture of heptafluoropropane HFC-365 / 227 has a high price, which affects its promotion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Prepare 100 kilograms of component A materials, weigh them separately: 40 kilograms of polyether polyol A (5 functionalities, number average molecular weight of 600-700), polyether polyol B (4 functionalities, number average molecular weight of 450-550 ) 28 kg, polyester polyol (3.0 functionality, number average molecular weight 500-600) 20 kg, catalyst PC8 (N,N dimethylcyclohexylamine) 0.8 kg

[0040] Y-27 (N, N dimethylbenzylamine) 1.6 kg, water 1.6 kg, B-8538 1.6 kg, c-pentane (cyclopentane) / HFC-365 / 227 9.36 / 5.04 kg. Add the weighed polyether polyol, polyester polyol, stabilizer, chemical blowing agent, catalyst, and physical blowing agent into the reaction kettle in turn, stir at room temperature for 2 hours, take it out for inspection, and meet the process parameters , issued satisfactory foam, that is, the qualified product of component A is obtained, taken out from the reaction kettle and put into barrels for storage.

[0041] The components A and B are mixed ...

Embodiment 2

[0050]Prepare 100 kg of component A materials, weigh them separately: polyether polyol A (5 functionalities, number average molecular weight 600-700) 40 kg, polyether polyol B (4 functionalities, number average molecular weight 450-550 ) 32 kg, polyester polyol (3.0 functionality, number average molecular weight 500-600) 8 kg, catalyst PC8 (N,N dimethylcyclohexylamine) 1.6 kg Y-27 (N,N dimethylbenzyl Amine) 2.0 kg, water 1.6 kg, B-8538 2.0 kg, c-pentane (cyclopentane) / HFC-365 / 227 8.32 / 4.48 kg. Add the weighed polyether polyol, polyester polyol, stabilizer, chemical blowing agent, catalyst, and physical blowing agent into the reaction kettle in turn, stir at room temperature for 2 hours, take it out for inspection, and meet the process parameters , issued satisfactory foam, that is, the qualified product of component A is obtained, taken out from the reaction kettle and put into barrels for storage.

[0051] The components A and B are mixed according to the weight ratio of A:B...

Embodiment 3

[0061] Prepare 100 kg of component A materials, weigh them separately: polyether polyol A (5 functionality, number average molecular weight 600-700) 40 kg, polyether polyol B (4 functionality, number average molecular weight 450-550 ) 28 kg, polyester polyol (3.0 functionality, number average molecular weight 500-600) 12 kg, catalyst PC8 (N,N dimethylcyclohexylamine) 1.04 kg Y-27 (N,N dimethylbenzyl Amine) 1.6 kg, water 1.36 kg, B-8538 1.6 kg, c-pentane (cyclopentane) / HFC-365 / 227 9.36 / 5.04 kg. The weighed polyether polyol, polyester polyol, stabilizer,

[0062] Add chemical foaming agent, catalyst, and physical foaming agent to the reaction kettle in turn, stir at room temperature for 2 hours, take it out for inspection, meet the process parameters, and produce satisfactory foam, that is, the qualified product of component A is obtained, and take it out from the reaction kettle Packed into storage.

[0063] The components A and B are mixed according to the weight ratio of A:...

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Abstract

The invention relates to an environment-friendly composite material applied to heat preservation of a pipeline. The environment-friendly composite material consists of a component A and a component B, wherein the component A consists of polyether polyol, polyester polyol, a foam stabilizer, a chemical foaming agent, a catalyst and a physical foaming agent; and the component B is polymerized diphenyl methane diisocyanate. When the environment-friendly composite material is used, environment-friendly polyurethane foam applied to the heat preservation of the pipeline can be prepared by mixing the component A and the component B. The environment-friendly polyurethane foam material applied to the heat preservation of the pipeline is prepared from the component A and the component B at normal temperature and normal pressure, so the process is simple and easy to operate. A c-pentane and HFC-365 / 227 (according to a ratio of 87:13) mixed type foaming agent serving as the physical foaming agent is used for preparing pipeline heat preservation composite polyether, so the environment-friendly aim is fulfilled, heat conductivity coefficient of foam is reduced, and properties, such as flowability, dimensional stability, adhesion stress and the like, of the foam are improved, and various indexes reach the requirements of national standard.

Description

technical field [0001] The invention provides a mixture of c-pentane (cyclopentane) and 1,1,1,3,3-pentafluorobutane and 1,1,1,2,3,3,3-heptafluoropropane The mixed foaming agent of 227 is used to produce an environment-friendly composite material used in pipeline insulation and its preparation method, especially relating to the production of an environment-friendly composite material used in pipeline insulation. Background technique [0002] (Cyclopentane) is easy to obtain and low in price, but it is flammable, explosive, and poor in heat preservation, while 1,1,1,3,3-pentafluorobutane and 1,1,1,2,3,3,3 - The price of HFC-365 / 227, a mixture of heptafluoropropane, is relatively high, which affects its promotion. Mixture of 1,1,1,3,3-pentafluorobutane and 1,1,1,2,3,3,3-heptafluoropropane HFC-365 / 227 (of which 1,1,1,3,3-pentafluorobutane The mass content of fluorobutane is 87%.) It is a new type of polyurethane physical foaming agent. It belongs to the third-generation blowi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08L75/06C08J9/14C08J9/06C08G18/48C08G18/42F16L59/00
Inventor 徐业峰刘军王健李明友宋伟娟
Owner 山东东大聚合物股份有限公司
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