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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 reaction, insufficient compressive strength, poor flame retardancy, insufficient mechanical properties, etc.

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

Embodiment 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 260 g of sucrose, 50 g of glycerin, 100 g of diethylene glycol, and palm oil 130g and 160g of chlorinated paraffin (42), seal the kettle and check the airtightness. After the airtightness is qualified, the nitrogen is replaced three times, heated to 70°C and stirred for 1h, then vacuumed to below -0.06Mpa, heated to 85°C, and 20g of dimethylamine is pumped in airtight, add 380g of propylene oxide, after aging for 1h, continue to heat up to 110°C, when the temperature reaches 110°C, start to add the remaining 820g of propylene oxide, after the propylene oxide is added, the pressure is increased to 0.15 Mpa continued to react for 4h, during which the pressure in the reactor was maintained at 0.1Mpa. After the timing is over, vacuum degassing at less than -0.088Mpa and 110°C for 2h to obtain poly...

Embodiment 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 260 g of sucrose, 50 g of glycerin, 100 g of diethylene glycol, and palm oil 290g, seal the kettle and check the airtightness. After the airtightness is qualified, replace it with nitrogen for 3 times, heat to 70°C, and stir for 1h, then evacuate to below -0.06Mpa, heat to 85°C, and pump 20g of dimethylamine into the , add 380g of propylene oxide, after aging for 1h, continue to heat up to 110°C, when the temperature reaches 110°C, start to add the remaining 820g of propylene oxide, after the addition of propylene oxide, add pressure to 0.15Mpa to continue the reaction for 4h, during which The pressure in the reactor is 0.15Mpa. After the timing is over, vacuum degassing at less than -0.088Mpa and 110°C for 2h to obtain polyether polyol.

Embodiment 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 300 g of sucrose, 50 g of glycerin, 100 g of diethylene glycol, and chlorinate Paraffin (42) 290g, seal the kettle to check the airtightness, replace with nitrogen three times after the airtightness is qualified, heat to 70°C, and stir for 1h, then evacuate to below -0.06Mpa, heat to 85°C, add 21g of dimethylformaldehyde Airtight pumping of amine, adding 380g of propylene oxide, after aging for 1h, continue to heat up to 110°C, when the temperature reaches 110°C, start to add the remaining 550g of propylene oxide, after the addition of propylene oxide, add pressure to 0.15Mpa to continue the reaction 4h, during which the pressure in the reactor was maintained at 0.15Mpa. After the timing is over, vacuum degassing at less than -0.088Mpa and 110°C for 2h 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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