Hard-foam polyether polyol used in grout of mining and preparation method thereof

A technology of polyether polyol and grout, which is applied in the field of chemical synthesis, can solve problems such as insufficient compressive strength, insufficient mechanical properties, and poor flame retardancy, and achieve simple and feasible operation, excellent compressive strength, and improved flame retardancy Effect

Inactive Publication Date: 2018-04-13
SHANDONG INOV NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are also some problems in polyurethane reinforced grouting materials, such as high heat of r

Method used

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  • Hard-foam polyether polyol used in grout of mining and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1

[0021] In a 3L autoclave equipped with a stirrer, a meter, a heating temperature control device, a cooling device (including an outer jacket and an inner coil) and a pressure sensor, add 260g of sucrose, 50g of glycerol, 100g of diethylene glycol, and palm oil 130g and chlorinated paraffin (42) 160g, seal the kettle to check the air tightness, replace with nitrogen 3 times after the air tightness is qualified, heat to 70℃ and stir for 1h, then vacuumize to below -0.06Mpa, heat to 85℃, 20g of dimethylamine was pumped in airtightly, and 380g of propylene oxide was added. After aging for 1 hour, the temperature was continued to rise to 110°C. When the temperature reached 110°C, the remaining 820g of propylene oxide was added. After the propylene oxide was added, the pressure was increased to 0.15 Mpa continues to react for 4h, during which the pressure in the reactor is maintained at 0.1Mpa. After the timing is over, vacuum degassing is performed at less than -0....

Example Embodiment

[0022] Example 2

[0023] In a 3L autoclave equipped with a stirrer, a meter, a heating temperature control device, a cooling device (including an outer jacket and an inner coil) and a pressure sensor, add 260g of sucrose, 50g of glycerol, 100g of diethylene glycol, and palm oil 290g, seal the kettle to check the air tightness. After the air tightness is qualified, replace with nitrogen 3 times, heat to 70℃, stir for 1h, then evacuate to below -0.06Mpa, heat to 85℃, and pump in 20g of dimethylamine airtightly , Add 380g of propylene oxide, after curing for 1h, continue to heat up to 110℃, when the temperature reaches 110℃, start to add the remaining 820g of propylene oxide, after the addition of propylene oxide, add pressure to 0.15Mpa and continue to react for 4h, maintain during The pressure inside the reactor is 0.15Mpa. After the timing is over, vacuum degassing is performed at less than -0.088Mpa and 110°C for 2 hours to obtain polyether polyol.

Example Embodiment

[0024] Example 3

[0025] In a 3L autoclave equipped with a stirrer, a meter, a heating temperature control device, a cooling device (including an outer jacket and an inner coil) and a pressure sensor, add 300g of sucrose, 50g of glycerol, 100g of diethylene glycol, and chlorination Paraffin wax (42) 290g, seal the kettle to check the air tightness. After the air tightness is qualified, replace with nitrogen 3 times, heat to 70℃, stir for 1h, then evacuate to below -0.06Mpa, heat to 85℃, 21g dimethyl The amine is pumped in airtightly, and 380g of propylene oxide is added. After maturing for 1 hour, the temperature is continued to rise to 110°C. When the temperature reaches 110°C, the remaining 550g of propylene oxide is added. During 4h, the pressure in the reactor was maintained at 0.15Mpa. After the timing is over, vacuum degassing is performed at less than -0.088Mpa and 110°C for 2 hours to obtain polyether polyol.

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Abstract

The invention relates to hard-foam polyether polyol used in grout of mining and a preparation method thereof, and belongs to the technical field of chemical synthesizing. The hard-foam polyether polyol comprises the raw materials of a high-functionality initiator, a micromolecule initiator, an additive, an amine catalyst and oxyalkylene on the mass ratio of 3-15 to 10-20 to 5-16 to 1-5 to 45-70, wherein the additive comprises one or two of palm oil or chlorcosane. The prepared polyether polyol is sufficient in resistance to compression, and outstanding in mechanical performance and adhering performance, and meets the application demands such as reinforcing, hole sealing, leakage blocking and filling of different types of grout of mining; the preparation method is small in requirements on equipment, simple and feasible in operation, and obvious in product cost advantage.

Description

technical field [0001] The invention relates to a rigid foam polyether polyol used for mine grouting material and a preparation method thereof, belonging to the technical field of chemical synthesis. Background technique [0002] Among the many polymer mining reinforcement materials, polyurethane reinforcement grouting material has the advantages of light weight, simple process technology, easy raw material ratio, and adjustable curing time. However, there are also some problems in polyurethane reinforced grouting materials, such as high heat of reaction, insufficient compressive strength, poor flame retardancy, and insufficient mechanical properties. In order to overcome the shortcomings of the existing mine-used polyurethane grouting materials, it is necessary to develop a new mine-used polyurethane grouting reinforcement material with high strength, good flame retardancy and low reaction heat release. Polyether polyol is one of the main components of mine-used polyuretha...

Claims

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Application Information

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IPC IPC(8): C08G65/28C08G18/48C08L75/08C08L91/00C08L91/06C08G101/00
CPCC08G18/4883C08G65/2609C08G65/2672C08L75/08C08L2201/02C08G2110/0025C08L91/00C08L91/06
Inventor 程铸洪宁晓龙董卫白维坤杨琦
Owner SHANDONG INOV NEW MATERIALS CO LTD
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