Polyurethane reinforced material and preparation method thereof

Abstract

The invention discloses a polyurethane reinforced material which is characterized by comprising a component A and a component B, wherein the component A comprises the following components in parts by weight: 20-45 parts of polyether polyol A, 25-55 parts of polyether polyol B, 5-10 parts of polyether polyol C, 5-15 parts of a flame retardant A, 5-10 parts of a flame retardant B, 0.2-0.5 parts of an amine catalyst, 0.1-0.5 parts of a tin catalyst and 0.5-1.0 parts of a foam stabilizer, and the component B is polymethylene polyphenyl polyisocyanate. The polyurethane reinforced material further comprises 3-8 parts of a viscosity reducer. Compared with similar materials, the material has better permeability and higher mechanical property, and broken coal and rock masses can be fixedly combined integrally and effectively due to ultrahigh tensile compressive strength and binding performance, so that the top plate and two uppers can bear pressure actively. The material does not contain poisonous volatile and corrosive matters, so that the material satisfies the demand of safety and environment-friendliness of materials under the shaft.

Description

technical field

[0001] The invention belongs to the technical field of polymer materials, and in particular relates to a high-strength broken roof control polyurethane reinforcement material and a preparation method thereof. Background technique

[0002] Coal mine roof disaster is one of the most fatal accidents in coal mine accidents, and the management of roof fall accidents has always been an important task for coal mining enterprises. Polyurethane reinforcement materials have a good consolidation effect on broken coal and rock mass, and are now the most widely used roof accident control materials in coal mines. As the mining depth of coal mines continues to increase, the pressure on the roof is also increasing, especially with the increase in the frequency of rock bursts, the requirements for the impact resistance and compression resistance of the roof are getting higher and higher. Conventional polyurethane reinforcement materials have a good effect on the reinforcemen...

Examples

Embodiment 1

[0051] Prepare 50kg of component A: weigh 33 parts of polyether polyol A (functionality 2-4, molecular weight 800-1200, viscosity 400-1000mPa.s), polyether polyol B (functionality 2- 4, Molecular weight 500-800, viscosity 300-600mPa.s) 35 parts, polyether polyol C (functionality 3-5, molecular weight 200-400, viscosity 1000-1500mPa.s) 6 parts, 10 parts of dimethyl phosphonate, 8 parts of tris(2-chloroethyl) phosphate, 0.3 parts of dibutyltin dilaurate, 0.2 parts of dimethylcyclohexylamine, 0.2 parts of pentamethyldiethylenetriamine , silicone oil foam stabilizer AK-8805 is 0.5 parts, diethylene glycol monoethyl ether 6.8 parts, put into a 100L small mixing kettle, stir evenly under normal temperature and pressure, then pack into a barrel and seal it for later use.

[0052] B component is polymethylene polyphenyl polyisocyanate.

[0053] Sampling of component A and component B at a volume ratio of 1:1 or a mass ratio of 1:1.17, the application equipment is a pneumatic double-f...

Embodiment 2

[0063] Prepare 50kg of component A: weigh 28 parts of polyether polyol A (functionality 2-4, molecular weight 800-1200, viscosity 400-1000mPa.s), polyether polyol B (functionality 2- 4, Molecular weight 500-800, viscosity 300-600mPa.s) 40 parts, polyether polyol C (functionality 3-5, molecular weight 200-400, viscosity 1000-1500mPa.s) 8 parts, 13 parts of dimethyl phosphonate, 5 parts of tris(2-chloropropyl) phosphate, 0.2 part of dibutyltin dilaurate, 0.3 part of dimethylcyclohexylamine, 0.2 part of pentamethyldiethylenetriamine , 0.5 parts of silicone oil foam stabilizer H-3612, 4.8 parts of diethylene glycol monoethyl ether, put it into a 100L small mixing kettle, stir evenly under normal temperature and pressure, then pack it into a barrel and seal it for later use.

[0064] B component is polymethylene polyphenyl polyisocyanate.

[0065] Sampling of component A and component B at a volume ratio of 1:1 or a mass ratio of 1:1.17, the application equipment is a pneumatic do...

Embodiment 3

[0075] Prepare 50kg of component A: weigh 20 parts of polyether polyol A (functionality 2-4, molecular weight 800-1200, viscosity 400-1000mPa.s), polyether polyol B (functionality 2- 4. 48 parts of molecular weight is 500-800, viscosity is 300-600mPa.s), 9 parts of polyether polyol C (functionality is 3-5, molecular weight is 200-400, viscosity is 1000-1500mPa.s), 8 parts of dimethyl phosphonate, 3 parts of tris (2-chloroethyl) phosphate, 7 parts of tris (2-chloropropyl) phosphate, 0.45 parts of dibutyltin dilaurate, pentamethyl diethylene 0.25 parts of triamine, 0.5 parts of silicone oil foam stabilizer H-3612, and 3.8 parts of diethylene glycol monoethyl ether were put into a 100L small mixing kettle, stirred evenly under normal temperature and pressure, and sealed in barrels for later use.

[0076] B component is polymethylene polyphenyl polyisocyanate.

[0077] Sampling of component A and component B at a volume ratio of 1:1 or a mass ratio of 1:1.17, the application equi...

technical field

[0001] The invention belongs to the technical field of polymer materials, and in particular relates to a high-strength broken roof control polyurethane reinforcement material and a preparation method thereof. Background technique

[0002] Coal mine roof disaster is one of the most fatal accidents in coal mine accidents, and the management of roof fall accidents has always been an important task for coal mining enterprises. Polyurethane reinforcement materials have a good consolidation effect on broken coal and rock mass, and are now the most widely used roof accident control materials in coal mines. As the mining depth of coal mines continues to increase, the pressure on the roof is also increasing, especially with the increase in the frequency of rock bursts, the requirements for the impact resistance and compression resistance of the roof are getting higher and higher. Conventional polyurethane reinforcement materials have a good effect on the reinforcemen...

Examples

Embodiment 1

[0051] Prepare 50kg of component A: weigh 33 parts of polyether polyol A (functionality 2-4, molecular weight 800-1200, viscosity 400-1000mPa.s), polyether polyol B (functionality 2- 4, Molecular weight 500-800, viscosity 300-600mPa.s) 35 parts, polyether polyol C (functionality 3-5, molecular weight 200-400, viscosity 1000-1500mPa.s) 6 parts, 10 parts of dimethyl phosphonate, 8 parts of tris(2-chloroethyl) phosphate, 0.3 parts of dibutyltin dilaurate, 0.2 parts of dimethylcyclohexylamine, 0.2 parts of pentamethyldiethylenetriamine , silicone oil foam stabilizer AK-8805 is 0.5 parts, diethylene glycol monoethyl ether 6.8 parts, put into a 100L small mixing kettle, stir evenly under normal temperature and pressure, then pack into a barrel and seal it for later use.

[0052] B component is polymethylene polyphenyl polyisocyanate.

[0053] Sampling of component A and component B at a volume ratio of 1:1 or a mass ratio of 1:1.17, the application equipment is a pneumatic double-f...

Embodiment 2

[0063] Prepare 50kg of component A: weigh 28 parts of polyether polyol A (functionality 2-4, molecular weight 800-1200, viscosity 400-1000mPa.s), polyether polyol B (functionality 2- 4, Molecular weight 500-800, viscosity 300-600mPa.s) 40 parts, polyether polyol C (functionality 3-5, molecular weight 200-400, viscosity 1000-1500mPa.s) 8 parts, 13 parts of dimethyl phosphonate, 5 parts of tris(2-chloropropyl) phosphate, 0.2 part of dibutyltin dilaurate, 0.3 part of dimethylcyclohexylamine, 0.2 part of pentamethyldiethylenetriamine , 0.5 parts of silicone oil foam stabilizer H-3612, 4.8 parts of diethylene glycol monoethyl ether, put it into a 100L small mixing kettle, stir evenly under normal temperature and pressure, then pack it into a barrel and seal it for later use.

[0064] B component is polymethylene polyphenyl polyisocyanate.

[0065] Sampling of component A and component B at a volume ratio of 1:1 or a mass ratio of 1:1.17, the application equipment is a pneumatic do...

Embodiment 3

[0075] Prepare 50kg of component A: weigh 20 parts of polyether polyol A (functionality 2-4, molecular weight 800-1200, viscosity 400-1000mPa.s), polyether polyol B (functionality 2- 4. 48 parts of molecular weight is 500-800, viscosity is 300-600mPa.s), 9 parts of polyether polyol C (functionality is 3-5, molecular weight is 200-400, viscosity is 1000-1500mPa.s), 8 parts of dimethyl phosphonate, 3 parts of tris (2-chloroethyl) phosphate, 7 parts of tris (2-chloropropyl) phosphate, 0.45 parts of dibutyltin dilaurate, pentamethyl diethylene 0.25 parts of triamine, 0.5 parts of silicone oil foam stabilizer H-3612, and 3.8 parts of diethylene glycol monoethyl ether were put into a 100L small mixing kettle, stirred evenly under normal temperature and pressure, and sealed in barrels for later use.

[0076] B component is polymethylene polyphenyl polyisocyanate.

[0077] Sampling of component A and component B at a volume ratio of 1:1 or a mass ratio of 1:1.17, the application equi...