CN100408610C - Rigid polyurethane foam ternary composite material and preparation method thereof - Google Patents

Abstract

The invention discloses a preparation method of a high-performance rigid polyurethane foam ternary composite material. Using polyether polyol QZ-4110, polyether polyol QZ-635, diphenylmethane diisocyanate 5005, amine catalyst A-33, dibutyltin dilaurate, accelerator DMP-30, hard foam silicone oil, nano-dioxide Silicon and organic montmorillonite are mixed according to a certain ratio, dispersed evenly by ultrasonic, stirred with an electric mixer at 2500-3500r/min for 10-15s, poured into the mold for foaming, and placed in an oven at 70-80°C for curing After 4 to 6 hours, the resulting composite material is a nano-reinforced polyurethane ternary composite material. The nanocomposite material of the invention has simple preparation process, low cost and excellent comprehensive performance, and has wide application prospects in construction, transportation, national defense and other industries.

Description

Rigid polyurethane foam ternary composite material and preparation method thereof

technical field

The invention relates to a formula and a preparation process of a polymer composite material, in particular to a rigid polyurethane foam ternary composite material and a preparation method thereof.

Background technique

Rigid polyurethane foam (RPUF for short), also known as rigid polyurethane foam, has high compressive strength and good dimensional stability, and can partially replace wood, metal and other plastics, and is widely used in construction, transportation and national defense. It is widely used in other industries.

As a structural material, certain strength, stiffness and toughness are required. Due to its lower strength and poorer mechanical properties than structural materials, rigid polyurethane foam cannot meet the requirements for use as structural materials under many special working conditions. In order to solve these problems, it is necessary to strengthen the polyurethane rigid foam. Most of the reinforcement agents reported in recent years are inorganic fillers, mainly silica particles, calcium carbonate, hollow glass microspheres, organic montmorillonite, glass fibers, organic fibers, carbon fibers, and lignin. Adding various reinforcing fillers to polyurethane foam to make composite materials can reduce costs and improve mechanical properties on the one hand, and further improve the wear resistance of polyurethane on the other hand.

At present, the research on polyurethane reinforcement is mainly the use of a single reinforcing agent. The use of a single reinforcing agent can improve one aspect of the mechanical properties of polyurethane foam, but it often reduces or has no effect on the other mechanical properties of the foam. For example, it is found that adding nano-silica can improve the compressive strength of polyurethane foam, but reduces the tensile strength of polyurethane foam; adding organic montmorillonite can improve the tensile strength of polyurethane foam, but it has no effect on the compressive strength of polyurethane foam. Change.

Contents of the invention

The object of the present invention is to provide a rigid polyurethane foam ternary composite material and a preparation method thereof.

Rigid polyurethane foam ternary composite material, raw material formula in parts by weight:

Polyether polyol QZ-4110 80～100 parts

Polyether polyol QZ-635 0.1～20 parts

Diphenylmethane diisocyanate 5005 110～160 parts

Amine Catalyst A-33 1～2 parts

Dibutyltin dilaurate 0.02～0.05 parts

Accelerator DMP-30 1.5～2.5 parts

Hard foam silicone oil 1~4 parts

Nano silicon dioxide 1～20 parts

Organic montmorillonite 0.5-10 parts.

The nano silicon dioxide is chemically treated with coupling agent KH550. The organic montmorillonite was chemically treated with octadecyl primary ammonium salt.

The steps of the preparation method of rigid polyurethane foam ternary composite material are as follows:

1) Mix polyether polyol QZ-4110, polyether polyol QZ-635, amine catalyst A-33, dibutyltin dilaurate, accelerator DMP-30, and hard foam silicone oil according to the proportion, and add the coupling agent KH550 chemically treated nano silicon dioxide forms a white material, and disperses it evenly with power ultrasound at a temperature of 25-35°C;

2) Mix diphenylmethane diisocyanate 5005 with organomontmorillonite chemically treated with octadecyl primary ammonium salt according to the proportion to form a black material, and disperse it evenly with power ultrasound at a temperature of 25-35°C;

3) Stir and mix the above-mentioned white material and black material with an electric mixer for 10-15 seconds. When there are bubbles and the foam body turns white, pour it into the mold to foam and swell. The speed of the electric mixer is 2800-3200r/min;

4) After demolding and forming, put it in an oven at 70-80°C, and ripen for 4-6 hours.

The present invention selects organic montmorillonite and nano-silica treated by coupling agent to strengthen rigid polyurethane foam simultaneously, which not only overcomes the disadvantages brought by a single reinforcing agent, but also comprehensively utilizes the advantages of the two, and simultaneously improves the The compressive strength and tensile strength of rigid polyurethane foam have significantly improved the overall performance of the material. In addition, it is the first time at home and abroad to use the interlayer bound water of organic montmorillonite as a foaming agent for rigid polyurethane foam, improving the foam formula and preparation process.

The high-performance rigid polyurethane/nano ternary composite material system obtained by the method of the invention has excellent performance and wide application fields. Its process control is simple, easy to process, and the amount of reinforcing agent can be adjusted according to performance requirements, and has the characteristics of low cost and high performance.

Detailed ways

Example 1

1) Mix 80 parts of polyether polyol QZ-4110, 20 parts of polyether polyol QZ-635, 1 part of amine catalyst A-33, 0.02 part of dibutyltin dilaurate, 1.5 parts of accelerator DMP-30, Mix 1 part of hard foam silicone oil, add 1 part of nano-silica chemically treated with coupling agent KH550 to form white material, and use power ultrasound at 25-35 °C to disperse evenly;

2) Mix 110 parts of diphenylmethane diisocyanate 5005 and 0.5 parts of organic montmorillonite chemically treated with octadecyl primary ammonium salt according to the proportion to form black material, and use power ultrasound at 25-35 °C to disperse it evenly ;

3) Stir and mix the above-mentioned white material and black material with an electric mixer for 10-15 seconds. When there are bubbles and the foam body turns white, immediately pour it into a glass mold for foaming and swelling. The speed of the electric mixer is 2800-3200r/min ;

4) After demolding and forming, put it in an oven at 70-80°C, and ripen for 4-6 hours.

The tensile strength of the rigid polyurethane foam ternary composite obtained in this example is 9.5MPa, the compressive strength is 6.2MPa, and the compressive modulus is 122.7MPa.

Example 2

1) Mix 100 parts of polyether polyol QZ-4110, 0.1 part of polyether polyol QZ-635, 2 parts of amine catalyst A-33, 0.05 part of dibutyltin dilaurate, 2.5 parts of accelerator DMP-30, Mix 4 parts of hard foam silicone oil, add 20 parts of nano silicon dioxide chemically treated with coupling agent KH550 to form a white material, and use power ultrasonic to disperse evenly at a temperature of 25-35 °C;

2) Mix 160 parts of diphenylmethane diisocyanate 5005 with 10 parts of organic montmorillonite chemically treated with octadecyl primary ammonium salt according to the proportion to form a black material, and use power ultrasound at a temperature of 25 to 35°C to disperse it evenly ;

3) Stir and mix the above-mentioned white material and black material with an electric mixer for 10-15 seconds. When there are bubbles and the foam body turns white, immediately pour it into a glass mold for foaming and swelling. The speed of the electric mixer is 2800-3200r/min ;

4) After demolding and forming, put it in an oven at 70-80°C, and ripen for 4-6 hours.

The tensile strength of the rigid polyurethane foam ternary composite obtained in this example is 7.9MPa, the compressive strength is 5.7MPa, and the compressive modulus is 110.4MPa.

Example 3

1) Mix 80 parts of polyether polyol QZ-4110, 20 parts of polyether polyol QZ-635, 1.5 parts of amine catalyst A-33, 0.02 parts of dibutyltin dilaurate, 2 parts of accelerator DMP-30, Mix 2.5 parts of hard foam silicone oil, add 1 part of nano silicon dioxide chemically treated with coupling agent KH550 to form white material, and use power ultrasonic to disperse evenly at a temperature of 25-35 °C;

2) Mix 150 parts of diphenylmethane diisocyanate 5005 with 0.5 parts of organic montmorillonite chemically treated with octadecyl primary ammonium salt according to the proportion to form black material, and use power ultrasound at 25-35 °C to disperse it evenly ;

3) Stir and mix the above-mentioned white material and black material with an electric mixer for 10-15 seconds. When there are bubbles and the foam body turns white, immediately pour it into a glass mold for foaming and swelling. The speed of the electric mixer is 2800-3200r/min ;

4) After demolding and forming, put it in an oven at 70-80°C, and ripen for 4-6 hours.

The tensile strength of the rigid polyurethane foam ternary composite obtained in this example is 10.2MPa, the compressive strength is 7.2MPa, and the compressive modulus is 133.5MPa.

Example 4

1) Mix 90 parts of polyether polyol QZ-4110, 10 parts of polyether polyol QZ-635, 1.5 parts of amine catalyst A-33, 0.02 parts of dibutyltin dilaurate, 2 parts of accelerator DMP-30, Mix 2.5 parts of hard foam silicone oil, add 1 part of nano silicon dioxide chemically treated with coupling agent KH550 to form white material, and use power ultrasonic to disperse evenly at a temperature of 25-35 °C;

2) Mix 150 parts of diphenylmethane diisocyanate 5005 with 0.5 parts of organic montmorillonite chemically treated with octadecyl primary ammonium salt according to the proportion to form black material, and use power ultrasound at 25-35 °C to disperse it evenly ;

3) Stir and mix the above-mentioned white material and black material with an electric mixer for 10-15 seconds. When there are bubbles and the foam body turns white, immediately pour it into a glass mold for foaming and swelling. The speed of the electric mixer is 2800-3200r/min ;

4) After demolding and forming, put it in an oven at 70-80°C, and ripen for 4-6 hours.

The tensile strength of the rigid polyurethane foam ternary composite obtained in this example is 11.6MPa, the compressive strength is 8.3MPa, and the compressive modulus is 151.2MPa.

Example 5

1) Mix 90 parts of polyether polyol QZ-4110, 10 parts of polyether polyol QZ-635, 1.5 parts of amine catalyst A-33, 0.02 parts of dibutyltin dilaurate, 2 parts of accelerator DMP-30, Mix 2.5 parts of hard foam silicone oil, add 2 parts of nano-silicon dioxide chemically treated with coupling agent KH550 to form white material, and use power ultrasonic to disperse evenly at a temperature of 25-35 °C;

2) Mix 150 parts of diphenylmethane diisocyanate 5005 and 1 part of organic montmorillonite chemically treated with octadecyl primary ammonium salt according to the proportion to form black material, and use power ultrasound at 25-35 °C to disperse it evenly ;

3) Stir and mix the above-mentioned white material and black material with an electric mixer for 10-15 seconds. When there are bubbles and the foam body turns white, immediately pour it into a glass mold for foaming and swelling. The speed of the electric mixer is 2800-3200r/min ;

4) After demolding and forming, put it in an oven at 70-80°C, and ripen for 4-6 hours.

The tensile strength of the rigid polyurethane foam ternary composite obtained in this example is 13.4MPa, the compressive strength is 8.9MPa, and the compressive modulus is 160.5MPa.

Example 6

1) Mix 90 parts of polyether polyol QZ-4110, 10 parts of polyether polyol QZ-635, 1.5 parts of amine catalyst A-33, 0.02 parts of dibutyltin dilaurate, 2 parts of accelerator DMP-30, Mix 2.5 parts of hard foam silicone oil, add 4 parts of nano silicon dioxide chemically treated with coupling agent KH550 to form a white material, and use power ultrasound at a temperature of 25 to 35°C to make it evenly dispersed;

2) Mix 150 parts of diphenylmethane diisocyanate 5005 with 2 parts of organic montmorillonite chemically treated with octadecyl primary ammonium salt according to the proportion to form a black material, and use power ultrasound at a temperature of 25 to 35°C to disperse it evenly ;

3) Stir and mix the above-mentioned white material and black material with an electric mixer for 10-15 seconds. When there are bubbles and the foam body turns white, immediately pour it into a glass mold for foaming and swelling. The speed of the electric mixer is 2800-3200r/min ;

4) After demolding and forming, put it in an oven at 70-80°C, and ripen for 4-6 hours.

The tensile strength of the rigid polyurethane foam ternary composite obtained in this example is 17.8MPa, the compressive strength is 10.3MPa, and the compressive modulus is 198.7MPa.

Example 7

1) Mix 90 parts of polyether polyol QZ-4110, 10 parts of polyether polyol QZ-635, 1.5 parts of amine catalyst A-33, 0.02 parts of dibutyltin dilaurate, 2 parts of accelerator DMP-30, Mix 2.5 parts of hard foam silicone oil, add 8 parts of nano-silica chemically treated with coupling agent KH550 to form white material, and use power ultrasonic to disperse evenly at a temperature of 25-35 °C;

2) Mix 150 parts of diphenylmethane diisocyanate 5005 with 4 parts of organic montmorillonite chemically treated with octadecyl primary ammonium salt according to the proportion to form a black material, and use power ultrasound at a temperature of 25 to 35°C to disperse it evenly ;

3) Stir and mix the above-mentioned white material and black material with an electric mixer for 10-15 seconds. When there are bubbles and the foam body turns white, immediately pour it into a glass mold for foaming and swelling. The speed of the electric mixer is 2800-3200r/min ;

4) After demolding and forming, put it in an oven at 70-80°C, and ripen for 4-6 hours.

The tensile strength of the rigid polyurethane foam ternary composite obtained in this example is 10.9MPa, the compressive strength is 9.1MPa, and the compressive modulus is 169.8MPa.

Example 8

1) Mix 90 parts of polyether polyol QZ-4110, 10 parts of polyether polyol QZ-635, 1.5 parts of amine catalyst A-33, 0.02 parts of dibutyltin dilaurate, 2 parts of accelerator DMP-30, Mix 2.5 parts of hard foam silicone oil, add 16 parts of nano silicon dioxide chemically treated with coupling agent KH550 to form a white material, and use power ultrasound at a temperature of 25 to 35°C to disperse evenly;

2) Mix 150 parts of diphenylmethane diisocyanate 5005 with 8 parts of organic montmorillonite chemically treated with octadecyl primary ammonium salt according to the proportion to form a black material, and use power ultrasound at a temperature of 25 to 35°C to disperse it evenly ;

3) Stir and mix the above-mentioned white material and black material with an electric mixer for 10-15 seconds. When there are bubbles and the foam body turns white, immediately pour it into a glass mold for foaming and swelling. The speed of the electric mixer is 2800-3200r/min ;

4) After demolding and forming, put it in an oven at 70-80°C, and ripen for 4-6 hours.

The tensile strength of the rigid polyurethane foam ternary composite obtained in this example is 8.2MPa, the compressive strength is 6.5MPa, and the compressive modulus is 117.3MPa.

Claims (2)

1. a horniness polyurethane foam ternary composite material is characterized in that, composition of raw materials by weight:

80～100 parts of polyether glycol QZ-4110;

0.1～20 part of polyether glycol QZ-635;

5,005 110～160 parts of '-diphenylmethane diisocyanates;

1～2 part of amines catalyst A-33;

0.02～0.05 part of dibutyl tin laurate;

1.5～2.5 parts of altax P-30;

1～4 part of silicone oil hard bubbles;

1～20 part of nano silicon;

0.5～10 part of organo montmorillonite;

Described nano silicon adopts coupling agent KH550 chemical treatment;

Described organo montmorillonite adopts octadecyl primary amine salt chemistry to handle.

2. the preparation method of a horniness polyurethane foam ternary composite material as claimed in claim 1, it is characterized in that: step is as follows:

1) by proportioning polyether glycol QZ-4110, polyether glycol QZ-635, amines catalyst A-33, dibutyl tin laurate, altax P-30, the silicone oil that hard bubbles are mixed, adding forms white material through the chemically treated nano silicon of coupling agent KH550, with power ultrasonic it is uniformly dispersed under 25～35 ℃ of temperature;

2) by proportioning '-diphenylmethane diisocyanate 5005 form to deceive is expected with mixing through the chemically treated organo montmorillonite of octadecyl primary amine salt, under 25～35 ℃ of temperature, it is uniformly dispersed with power ultrasonic;

3) above-mentioned white material is mixed 10～15s with deceiving material with electric blender, send, when foam turns white, inject the mould foaming, expand and decide as bubble, the rotating speed of electric blender is 2800～3200r/min;

4) behind stripping forming, place 70～80 ℃ of baking ovens, slaking 4～6 hours gets final product.