Ternary foaming agent composition and application thereof in polyurethane materials for household appliances

Abstract

The invention belongs to the field of polyurethane foaming, and in particular relates to a ternary foaming agent composition and an application thereof in polyurethane materials for household appliances. The ternary foaming agent composition is prepared from the following components in parts by weight: 5.5-10 parts of cyclopentane (CP), 2.0-4.0 parts of isopentane (IP), and 0.5-1.5 parts of 2,3,3,3-tetrafluoropropene (HFO-1234yf). By using the ternary foaming agent composition provided by the invention together with polyisocyanate and premixed polyethers with specific parts by weight, the prepared rigid polyurethane foam has unexpected improvements in various performances such as average core density, compression strengths at vertical and transverse directions, size stability at high and low temperatures, and heat conductivity coefficient.

Description

technical field

[0001] The invention belongs to the field of polyurethane foaming, and in particular relates to a ternary foaming agent composition and its application in preparing polyurethane materials for household appliances. Background technique

[0002] Rigid polyurethane foam, referred to as rigid polyurethane foam, is a microporous material formed by the reaction of isocyanate and polyol components under the action of various additives such as foam stabilizers, catalysts, and foaming agents. It is a kind of Synthetic material with good thermal insulation properties. Due to its certain mechanical properties and excellent heat insulation, heat preservation and shock absorption properties, it has been widely used in the heat preservation of oil pipelines, thermal pipelines and chemical equipment, and because of its light weight, high specific strength and small thermal conductivity Its density and hardness can be adjusted according to the needs of users, and it is easy...

Examples

Embodiment 1

[0073] A ternary blowing agent composition a, which consists of 5.5 parts by weight of cyclopentane (CP), 2.0 parts by weight of isopentane (IP), 2,3,3,3-tetrafluoropropene (HFO-1234yf) 0.5 parts by weight.

[0074] Utilize above-mentioned ternary blowing agent composition a to prepare the process of hard polyurethane foam A as follows:

[0075] First with the neopentyl glycol phthalate polyester polyol of 91.5 parts by weight, its hydroxyl value is 280mgKOH / g, and the number average functionality is 2.3; The water of 1.5 parts by weight; The catalyst of 2.0 parts by weight (tetramethyl ethylenediamine); 5 parts by weight of flame retardant (red phosphorus); 1.0 parts by weight of foam stabilizer (polysiloxane-polyoxyalkylene ether block copolymer) mixed uniformly in a mixer to form a combined polyether .

[0076] Then add each component of the aforementioned ternary foaming agent composition into the mixer, and mix evenly. The mixing temperature is 21° C., and the mixing pr...

Embodiment 2

[0080] A ternary blowing agent composition b, which consists of 9.5 parts by weight of cyclopentane (CP), 4.0 parts by weight of isopentane (IP), 2,3,3,3-tetrafluoropropene (HFO-1234yf) 1.5 parts by weight.

[0081] Utilize above-mentioned ternary blowing agent composition b to prepare the process of hard polyurethane foam B as follows:

[0082] First with the polyether polyol that the sorbitol of 77 weight parts starts, its hydroxyl value is 350mgKOH / g, and the number average functionality is 6.0; The water of 2.5 weight parts; The catalyst (tetramethylethylenediamine) of 2.5 weight parts 15 parts by weight of a flame retardant (red phosphorus); 3.0 parts by weight of a foam stabilizer (polysiloxane-polyoxyalkylene ether block copolymer) were mixed uniformly in a mixer to form a combined polyether.

[0083] Then add each component of the aforementioned ternary foaming agent composition into the mixer, and mix evenly. The mixing temperature is 21° C., and the mixing pressure ...

Embodiment 3

[0087] A ternary foaming agent composition c, which consists of 7.0 parts by weight of cyclopentane (CP), 2.5 parts by weight of isopentane (IP), 2,3,3,3-tetrafluoropropene (HFO-1234yf) 0.8 parts by weight.

[0088] Utilize above-mentioned ternary blowing agent composition c to prepare the process of hard polyurethane foam C as follows:

[0089] First with the neopentyl glycol phthalate polyester polyol of 86.5 parts by weight, its hydroxyl value is 330mgKOH / g, and the number average functionality is 2.6; The water of 1.8 parts by weight; The catalyst of 2.2 parts by weight (tetramethyl ethylenediamine); 8.0 parts by weight of flame retardant (red phosphorus); 1.5 parts by weight of foam stabilizer (polysiloxane-polyoxyalkylene ether block copolymer) mixed uniformly in a mixer to form a combined polyether .

[0090] Then add each component of the aforementioned ternary foaming agent composition into the mixer, and mix evenly. The mixing temperature is 21° C., and the mixing ...

technical field

[0001] The invention belongs to the field of polyurethane foaming, and in particular relates to a ternary foaming agent composition and its application in preparing polyurethane materials for household appliances. Background technique

[0002] Rigid polyurethane foam, referred to as rigid polyurethane foam, is a microporous material formed by the reaction of isocyanate and polyol components under the action of various additives such as foam stabilizers, catalysts, and foaming agents. It is a kind of Synthetic material with good thermal insulation properties. Due to its certain mechanical properties and excellent heat insulation, heat preservation and shock absorption properties, it has been widely used in the heat preservation of oil pipelines, thermal pipelines and chemical equipment, and because of its light weight, high specific strength and small thermal conductivity Its density and hardness can be adjusted according to the needs of users, and it is easy...

Examples

Embodiment 1

[0073] A ternary blowing agent composition a, which consists of 5.5 parts by weight of cyclopentane (CP), 2.0 parts by weight of isopentane (IP), 2,3,3,3-tetrafluoropropene (HFO-1234yf) 0.5 parts by weight.

[0074] Utilize above-mentioned ternary blowing agent composition a to prepare the process of hard polyurethane foam A as follows:

[0075] First with the neopentyl glycol phthalate polyester polyol of 91.5 parts by weight, its hydroxyl value is 280mgKOH / g, and the number average functionality is 2.3; The water of 1.5 parts by weight; The catalyst of 2.0 parts by weight (tetramethyl ethylenediamine); 5 parts by weight of flame retardant (red phosphorus); 1.0 parts by weight of foam stabilizer (polysiloxane-polyoxyalkylene ether block copolymer) mixed uniformly in a mixer to form a combined polyether .

[0076] Then add each component of the aforementioned ternary foaming agent composition into the mixer, and mix evenly. The mixing temperature is 21° C., and the mixing pr...

Embodiment 2

[0080] A ternary blowing agent composition b, which consists of 9.5 parts by weight of cyclopentane (CP), 4.0 parts by weight of isopentane (IP), 2,3,3,3-tetrafluoropropene (HFO-1234yf) 1.5 parts by weight.

[0081] Utilize above-mentioned ternary blowing agent composition b to prepare the process of hard polyurethane foam B as follows:

[0082] First with the polyether polyol that the sorbitol of 77 weight parts starts, its hydroxyl value is 350mgKOH / g, and the number average functionality is 6.0; The water of 2.5 weight parts; The catalyst (tetramethylethylenediamine) of 2.5 weight parts 15 parts by weight of a flame retardant (red phosphorus); 3.0 parts by weight of a foam stabilizer (polysiloxane-polyoxyalkylene ether block copolymer) were mixed uniformly in a mixer to form a combined polyether.

[0083] Then add each component of the aforementioned ternary foaming agent composition into the mixer, and mix evenly. The mixing temperature is 21° C., and the mixing pressure ...

Embodiment 3

[0087] A ternary foaming agent composition c, which consists of 7.0 parts by weight of cyclopentane (CP), 2.5 parts by weight of isopentane (IP), 2,3,3,3-tetrafluoropropene (HFO-1234yf) 0.8 parts by weight.

[0088] Utilize above-mentioned ternary blowing agent composition c to prepare the process of hard polyurethane foam C as follows:

[0089] First with the neopentyl glycol phthalate polyester polyol of 86.5 parts by weight, its hydroxyl value is 330mgKOH / g, and the number average functionality is 2.6; The water of 1.8 parts by weight; The catalyst of 2.2 parts by weight (tetramethyl ethylenediamine); 8.0 parts by weight of flame retardant (red phosphorus); 1.5 parts by weight of foam stabilizer (polysiloxane-polyoxyalkylene ether block copolymer) mixed uniformly in a mixer to form a combined polyether .

[0090] Then add each component of the aforementioned ternary foaming agent composition into the mixer, and mix evenly. The mixing temperature is 21° C., and the mixing ...

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