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Polyurethane foam insulation material used for rice steaming cupboard and preparation method of polyurethane foam insulation material

A technology of polyurethane foam and thermal insulation materials, applied in the field of polyurethane, which can solve the problems of carbonization deformation of foam materials, loss of thermal insulation effect, separation of foam and base material, etc., and achieve the effect of increasing foam strength, improving anti-oxidation ability, and balancing viscosity problems

Inactive Publication Date: 2019-02-15
SHANDONG INOV NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the principle of using steam to heat until cooked, the temperature of the steam in the cabinet can be as high as 140°C for a long time. Under long-term use conditions, higher requirements are placed on the high temperature resistance of the polyurethane foam that acts as heat preservation. It is easy to cause foam at high temperatures. The material is carbonized and deformed and separated from the base material, thus losing the effect of heat preservation. In addition, since most cabinets are made of stainless steel, the material itself has poor adhesion to polyurethane foam, which is prone to separation of the foam from the base material, which also affects Less than better insulation

Method used

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  • Polyurethane foam insulation material used for rice steaming cupboard and preparation method of polyurethane foam insulation material
  • Polyurethane foam insulation material used for rice steaming cupboard and preparation method of polyurethane foam insulation material
  • Polyurethane foam insulation material used for rice steaming cupboard and preparation method of polyurethane foam insulation material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The polyurethane foam insulation material for the rice cooking cabinet is composed of component A and component B, and the weight ratio of component A to component B is 1:1.0, wherein:

[0038] Component A is, in parts by weight:

[0039]

[0040] Group B is PM200.

[0041] During preparation, add the weighed polyether polyol A, polyether polyol B, polyether polyol C, crosslinking agent, and process additives into the reactor for stirring, then add the weighed physical blowing agent according to The ratio is fully mixed, and the weighed foam stabilizer, catalyst, chemical foaming agent, and fully mixed physical foaming agent are added to the reactor, and stirred at room temperature for 1.0 hours to obtain A component; Diphenylmethane diisocyanate PM200 was mixed uniformly and reacted according to the weight ratio of 1:1.0, and the polyurethane foam insulation material for steaming rice cabinets was prepared.

[0042] The performance test is carried out on the polyu...

Embodiment 2

[0050] The polyurethane foam insulation material for the rice cooking cabinet is composed of component A and component B, and the weight ratio of component A to component B is 1:1.1, wherein:

[0051] Component A is, in parts by weight:

[0052]

[0053] Group B is M20S.

[0054] During preparation, add the weighed polyether polyol A, polyether polyol B, polyether polyol C, crosslinking agent, and process additives into the reactor for stirring, then add the weighed physical blowing agent according to The ratio is fully mixed, and the weighed foam stabilizer, catalyst, chemical foaming agent, and fully mixed physical foaming agent are added to the reactor, and stirred at room temperature for 1.5 hours to obtain A component; A component and isocyanate (M20S) was uniformly mixed and reacted according to the weight ratio of 1:1.1, and the polyurethane foam insulation material for steaming rice cabinets was prepared.

[0055] The performance test is carried out on the polyure...

Embodiment 3

[0063] The polyurethane foam insulation material for the rice cooking cabinet is composed of component A and component B, and the weight ratio of component A to component B is 1:1.2, wherein:

[0064] Component A is, in parts by weight:

[0065]

[0066] Group B is M20S.

[0067] During preparation, add the weighed polyether polyol A, polyether polyol B, polyether polyol C, crosslinking agent, and process additives into the reactor for stirring, then add the weighed physical blowing agent according to The ratio is fully mixed, and the weighed foam stabilizer, catalyst, chemical foaming agent, and fully mixed physical foaming agent are added to the reactor, and stirred at room temperature for 1.0 hours to obtain A component; A component and isocyanate (M20S) was uniformly mixed and reacted according to the weight ratio of 1:1.2, and the polyurethane foam insulation material for steaming rice cabinets was prepared.

[0068] The performance test is carried out on the polyure...

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Abstract

The invention belongs to the technical field of polyurethane and specifically relates to a polyurethane foam insulation material used for a rice steaming cupboard and a preparation method of the polyurethane foam insulation material. The polyurethane foam insulation material used for the rice steaming cupboard consists of a component A and a component B, wherein the component A comprises polyetherpolyol A, polyether polyol B, polyether polyol C, a cross-linking agent, a process additive, a foam stabilizer, a chemical foaming agent, a catalyst and a physical foaming agent; the component B comprises polymerized diphenyl-methane-diisocyanate. According to the polyurethane foam insulation material, the adhesive property of foams and a stainless steel base material is effectively improved, sothat the foams can be better adhered to the surface of the base material; the high temperature resistance type polyether polyol is added with the process additive, so that the carbonizing resistance and the non-deformability of the foams under a long-term high temperature condition are improved; meanwhile, the problem of service restriction of a high black material ratio of a common all water hightemperature resistance system is solved, and the operative weldability of use and the service life of the rice steaming cupboard under a high temperature condition are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of polyurethane, and in particular relates to a polyurethane foam insulation material for a rice steamer and a preparation method thereof. Background technique [0002] Polyurethane foam is a foam product made by reacting polyether polyol and isocyanate under the action of blowing agent, catalyst and other additives. It has excellent thermal insulation properties, mechanical properties, electrical properties and chemical resistance properties, especially has excellent thermal insulation properties, and is widely used in the thermal insulation fields of refrigerator freezers, cold storage, pipelines, sandwich panels and water heaters. [0003] Steamed rice cabinet, also known as steamed rice cabinet, steamed rice machine or steamed rice box. It refers to large-scale kitchen baking equipment that uses electricity and gas to generate heat and cook rice. The body is cabinet-shaped and made of stainless steel, ...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/66C08G18/48C08G18/32C08J9/08C08J9/14C08G101/00
CPCC08G18/3281C08G18/4804C08G18/6688C08G18/7664C08G2101/00C08J9/141C08J9/144C08J2203/14C08J2203/142C08J2203/204
Inventor 念以亭王玉李欣肖健美
Owner SHANDONG INOV NEW MATERIALS CO LTD