Polyurethane heat insulation material

An insulation material, polyurethane technology, applied in the field of insulation materials, can solve the problems of vacuum nozzle foam cracking, foam and shell falling off, atmospheric ozone layer destruction, etc., and achieve the effect of low equipment requirements, good wear resistance and corrosion resistance, and low cost

Inactive Publication Date: 2016-12-07

NANNING KEYU ENERGY TECH CO LTD

7 Cites 3 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0003] In the production process of polyurethane, due to various reasons such as its own characteristics, production process and production workers' operating skills, there is a common problem of foam shrinkage, which may easily cause part or all of the foam and the shell to fall off, and eventually lead to deformation of the shell and vacuum nozzle foam. Cracking, what's more, the hard polyurethane foam between the inner tank and the outer shell is cracke...

Abstract

The invention discloses a polyurethane heat insulation material, which is prepared from the following raw materials in parts by weight through foaming: 60 to 80 parts of toluene diisocynate, 40 to 60 parts of plant fiber based polyether polyol, 30 to 50 parts of plant oil based polyether polyol, 1 to 3 parts of catalysts, 0.5 to 1 part of foaming agents, 1 to 3 parts of silicone oil and 6 to 8 parts of deionized water. The polyurethane heat insulation material has the advantages of high intensity, light weight, low heat conductivity, good dimension stability, good heat insulation effect, good wear-resistant anti-corrosion performance and efficient flame-retardant capability; polyhydric alcohols are prepared from waste, waste grease and the like; the energy is saved; the environment is protected. In addition, the preparation process is simple; the cost is low; the equipment requirements are low; the environment-friendly effect is achieved in the production process; the industrial production is easy; the polyurethane heat insulation material is suitable for large-range popularization and application.

Technology Topic

ChemistryToluene +10

Examples

Experimental program(3)
Effect test(1)

Example Embodiment

[0021] Example 1

[0022] A polyurethane thermal insulation material made by foaming raw materials in the following proportions by weight:

[0023] 60 kg of toluene diisocyanate, 40 kg of vegetable fiber-based polyether polyol, 30 kg of vegetable oil-based polyether polyol, 1 kg of catalyst, 0.5 kg of foaming agent, 1 kg of silicone oil, and 6 kg of deionized water.

[0024] The plant fiber-based polyether polyol is a polyether polyol made from agricultural and forestry waste, with a viscosity of 2800 mPa·s and an average functionality of 4.

[0025] The vegetable oil-based polyether polyol is a polyether polyol made from waste fats and oils, with a viscosity of 2800 mPa·s and an average functionality of 4.5.

[0026] The catalyst is N,N-dimethylcyclohexylamine.

[0027] The blowing agent is a polyether organopolysiloxane.

[0028] The preparation method of the above polyurethane thermal insulation material is as follows:

[0029] (1) According to the mass ratio of the above raw materials;

[0030] (2) Put toluene diisocyanate, vegetable fiber-based polyether polyol, vegetable oil-based polyether polyol, and silicone oil in a mixer in sequence, and stir evenly for 30-40 minutes to obtain mixture A;

[0031] (3) Put the catalyst, blowing agent, and deionized water in the mixer in turn, and stir for 20-30 minutes to obtain mixture B;

[0032] (4) Add Mixture A to Mixture B, heat up to 90-110°C, stir for 120-150min, and stir evenly to obtain the product.

Example Embodiment

[0033] Example 2

[0034] A polyurethane thermal insulation material made by foaming raw materials in the following proportions by weight:

[0035] 70kg of toluene diisocyanate, 50kg of vegetable fiber-based polyether polyol, 40kg of vegetable oil-based polyether polyol, 2kg of catalyst, 0.8kg of foaming agent, 2kg of silicone oil, and 7kg of deionized water.

[0036] The plant fiber-based polyether polyol is a polyether polyol made from agricultural and forestry waste, with a viscosity of 2800 mPa·s and an average functionality of 4.5.

[0037] The vegetable oil-based polyether polyol is a polyether polyol made from non-edible fats and oils, with a viscosity of 2800 mPa·s and an average functionality of 4.8.

[0038] The catalyst is N,N-dimethylcyclohexylamine.

[0039] The blowing agent is a polyether organopolysiloxane.

[0040] The preparation method of the above polyurethane thermal insulation material is as follows:

[0041] (1) According to the mass ratio of the above raw materials;

[0042] (2) Put toluene diisocyanate, vegetable fiber-based polyether polyol, vegetable oil-based polyether polyol, and silicone oil in a mixer in sequence, and stir evenly for 35 minutes to obtain mixture A;

[0043] (3) Put the catalyst, blowing agent, and deionized water in the mixer in sequence, and stir for 25 minutes to obtain mixture B;

[0044] (4) Add mixture A to mixture B, raise the temperature to 100°C, stir for 135 min, and stir evenly to obtain the product.

Example Embodiment

[0045] Example 3

[0046] A polyurethane thermal insulation material made by foaming raw materials in the following proportions by weight:

[0047] 80kg of toluene diisocyanate, 60kg of vegetable fiber-based polyether polyol, 50kg of vegetable oil-based polyether polyol, 3kg of catalyst, 1kg of blowing agent, 3kg of silicone oil, and 8kg of deionized water.

[0048] The plant fiber-based polyether polyol is a polyether polyol made from agricultural and forestry waste, with a viscosity of 2800 mPa·s and an average functionality of 5.

[0049] The vegetable oil-based polyether polyol is a polyether polyol made from waste fats and oils, with a viscosity of 2800 mPa·s and an average functionality of 5.

[0050] The catalyst is N,N-dimethylcyclohexylamine.

[0051] The blowing agent is a polyether organopolysiloxane.

[0052] The preparation method of the above polyurethane thermal insulation material is as follows:

[0053] (1) According to the mass ratio of the above raw materials;

[0054] (2) Put toluene diisocyanate, vegetable fiber-based polyether polyol, vegetable oil-based polyether polyol, and silicone oil in a mixer in sequence, and stir evenly for 40 minutes to obtain mixture A;

[0055] (3) Put the catalyst, blowing agent, and deionized water in the mixer in turn, and stir for 30 minutes to obtain mixture B;

[0056] (4) Add mixture A to mixture B, heat up to 110°C, stir for 150 min, and stir evenly to obtain the product.

PUM

Property	Measurement	Unit
Viscosity	2800.0	mPa·s

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.

Classification and recommendation of technical efficacy words

high strength
light in mass

Polyurethane heat insulation material

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

Similar technology patents

Annuloplasty Device and Methods

Ultra-high-performance concrete reinforced concrete column with fiber reinforced polymers wound around steel pipe

Road traffic guardrail capable of buffering and absorbing impact

Rotor for rotating electric machine

Humic acid long-acting compound fertilizer and its preparing method

Classification and recommendation of technical efficacy words

High-nitrogen austenitic stainless steel

Method of preparing a poorly crystalline calcium phosphate and methods of its use

Hexagonal ferrite magnetic powder, method for producing the same and magnetic recording medium

Composition of and method for making high performance resins for infusion and transfer molding processes

600-MPa grade vanadium-containing high-strength hot-rolled steel bar and production method thereof

High-voltage line inspection robot

Deployable surface device with fixed truss structure

Aircraft with changeable wing shape

Large-angle all-round-lighting LED bulb

Parallel ankle rehabilitation robot and control method thereof