Thermoplastic rigid polyurethane foam for automotive interior and preparation method thereof

Abstract

The invention belongs to the technical field of chemical engineering materials, and particularly relates to thermoplastic hard polyurethane foam plastic for automobile interior decoration and a preparation method thereof. The thermoplastic hard polyurethane foam plastic is composed of a component A and a component B, the component A is composed of rapeseed oil derivative, polyether polyol, polyester polyol, crosslinking agent, H2O, foam stabilizer, hole opening agent, foaming catalyst and gel catalyst, and the component B is modified MDI. By the preparation method, foam which is lower in density, high in hole opening ratio and elongation rate, good in elongation effect and high in mechanical performance can be prepared, and requirements, on automobile ceiling interior decoration, of premium cars are met.

Description

technical field

[0001] The invention belongs to the technical field of chemical materials, and in particular relates to a thermoplastic rigid polyurethane foam for automobile interior decoration and a preparation method thereof. Background technique

[0002] In recent years, my country's automobile industry has developed rapidly, and cars have shown explosive growth. With the rapid development of automobiles, the lightweight and comfort of automobiles have increasingly become the focus of people's attention. As an important part of a car, automotive interior materials have attracted enough attention. Thermoplastic rigid polyurethane foam has incomparable advantages and has gradually replaced other materials. It is widely used in the manufacture of automotive interior ceilings. The ceilings made of them have superior properties such as light weight, heat insulation, and sound absorption.

[0003] The polyol composition is used as the raw material for the preparation of ther...

Examples

Embodiment 1

[0033] (1) Preparation of rapeseed oil derivatives:

[0034] Take 20Kg of the small molecule polyol mixture (the molar ratio of triethanolamine, glycerol and trimethylolpropane is 3:5:2), and the molar ratio of them to rapeseed oil is 2:1, pour it into the reaction kettle, and add 0.16Kg After replacing the PbO catalyst with nitrogen, start stirring, and at the same time raise the temperature to 210°C for 2.5 hours to obtain a rapeseed oil derivative (i.e. alcoholysis product); then add PU3318 antioxidant 0.075Kg and ChicF96 antioxidant to the reaction kettle 0.025Kg, stirred at 85°C for 1 hour, released after stirring fully.

[0035] (2) Preparation of component A:

[0036]

[0037]

[0038] Put the above prepared rapeseed oil derivatives, polyether polyols, and polyester polyols into the reactor and stir for 10 minutes, then add water, foaming catalyst, gelling catalyst, foam stabilizer, crosslinking agent, and cell opener , stirred and reacted at room temperature, s...

Embodiment 2

[0042] (1) Preparation of rapeseed oil derivatives:

[0043] Weigh 20Kg of the small molecule polyol mixture (the molar ratio of triethanolamine, glycerin and trimethylolpropane is 2:3:5), the molar ratio of them to rapeseed oil is 1.9:1, pour it into the reaction kettle, add 0.16 Kg of PbO catalyst, after nitrogen replacement, start stirring, and simultaneously heat up to 250 ° C for 1.5 hours to obtain rapeseed oil derivatives (i.e. alcoholysis products); then add PU3318 antioxidant 0.025Kg and ChicF96 anti-oxidant to the reaction kettle Oxygen agent 0.075Kg, stirred at 80°C for 1.5h, released after fully stirred.

[0044] (2) Preparation of component A:

[0045]

[0046]

[0047] Put the above prepared rapeseed oil derivatives, polyether polyols, and polyester polyols into the reactor and stir for 15 minutes, then add water, foaming catalyst, gelling catalyst, foam stabilizer, crosslinking agent, and cell opening agent , stirred and reacted at room temperature, stir...

Embodiment 3

[0051] (1) Preparation of rapeseed oil derivatives:

[0052]Weigh 20Kg of the small molecule polyol mixture (triethanolamine, glycerol and trimethylolpropane molar ratio is 2:5:3), and their molar ratio to rapeseed oil is 2:1, pour it into the reactor, add 0.16 Kg of PbO catalyst, after nitrogen replacement, start stirring, and at the same time raise the temperature to 230 ° C for 2 hours to obtain rapeseed oil derivatives (i.e. alcoholysis products); the second is to add PU3318 antioxidant 0.05KG and ChicF96 in the reaction kettle Antioxidant 0.05Kg, stir at around 75°C for 0.5h, release after stirring fully.

[0053] (2) Preparation of component A:

[0054]

[0055] Put the above prepared rapeseed oil derivatives, polyether polyols, and polyester polyols into the reactor and stir for 12 minutes, then add water, foaming catalyst, gel catalyst, foam stabilizer, crosslinking agent, and cell opening agent , stirred and reacted at room temperature, stirred for 2.5 hours, and...

technical field

[0001] The invention belongs to the technical field of chemical materials, and in particular relates to a thermoplastic rigid polyurethane foam for automobile interior decoration and a preparation method thereof. Background technique

[0002] In recent years, my country's automobile industry has developed rapidly, and cars have shown explosive growth. With the rapid development of automobiles, the lightweight and comfort of automobiles have increasingly become the focus of people's attention. As an important part of a car, automotive interior materials have attracted enough attention. Thermoplastic rigid polyurethane foam has incomparable advantages and has gradually replaced other materials. It is widely used in the manufacture of automotive interior ceilings. The ceilings made of them have superior properties such as light weight, heat insulation, and sound absorption.

[0003] The polyol composition is used as the raw material for the preparation of ther...

Examples

Embodiment 1

[0033] (1) Preparation of rapeseed oil derivatives:

[0034] Take 20Kg of the small molecule polyol mixture (the molar ratio of triethanolamine, glycerol and trimethylolpropane is 3:5:2), and the molar ratio of them to rapeseed oil is 2:1, pour it into the reaction kettle, and add 0.16Kg After replacing the PbO catalyst with nitrogen, start stirring, and at the same time raise the temperature to 210°C for 2.5 hours to obtain a rapeseed oil derivative (i.e. alcoholysis product); then add PU3318 antioxidant 0.075Kg and ChicF96 antioxidant to the reaction kettle 0.025Kg, stirred at 85°C for 1 hour, released after stirring fully.

[0035] (2) Preparation of component A:

[0036]

[0037]

[0038] Put the above prepared rapeseed oil derivatives, polyether polyols, and polyester polyols into the reactor and stir for 10 minutes, then add water, foaming catalyst, gelling catalyst, foam stabilizer, crosslinking agent, and cell opener , stirred and reacted at room temperature, s...

Embodiment 2

[0042] (1) Preparation of rapeseed oil derivatives:

[0043] Weigh 20Kg of the small molecule polyol mixture (the molar ratio of triethanolamine, glycerin and trimethylolpropane is 2:3:5), the molar ratio of them to rapeseed oil is 1.9:1, pour it into the reaction kettle, add 0.16 Kg of PbO catalyst, after nitrogen replacement, start stirring, and simultaneously heat up to 250 ° C for 1.5 hours to obtain rapeseed oil derivatives (i.e. alcoholysis products); then add PU3318 antioxidant 0.025Kg and ChicF96 anti-oxidant to the reaction kettle Oxygen agent 0.075Kg, stirred at 80°C for 1.5h, released after fully stirred.

[0044] (2) Preparation of component A:

[0045]

[0046]

[0047] Put the above prepared rapeseed oil derivatives, polyether polyols, and polyester polyols into the reactor and stir for 15 minutes, then add water, foaming catalyst, gelling catalyst, foam stabilizer, crosslinking agent, and cell opening agent , stirred and reacted at room temperature, stir...

Embodiment 3

[0051] (1) Preparation of rapeseed oil derivatives:

[0052]Weigh 20Kg of the small molecule polyol mixture (triethanolamine, glycerol and trimethylolpropane molar ratio is 2:5:3), and their molar ratio to rapeseed oil is 2:1, pour it into the reactor, add 0.16 Kg of PbO catalyst, after nitrogen replacement, start stirring, and at the same time raise the temperature to 230 ° C for 2 hours to obtain rapeseed oil derivatives (i.e. alcoholysis products); the second is to add PU3318 antioxidant 0.05KG and ChicF96 in the reaction kettle Antioxidant 0.05Kg, stir at around 75°C for 0.5h, release after stirring fully.

[0053] (2) Preparation of component A:

[0054]

[0055] Put the above prepared rapeseed oil derivatives, polyether polyols, and polyester polyols into the reactor and stir for 12 minutes, then add water, foaming catalyst, gel catalyst, foam stabilizer, crosslinking agent, and cell opening agent , stirred and reacted at room temperature, stirred for 2.5 hours, and...

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