CN110818877B - PEEK-nanometer SiO 2 Composite doped polyurethane foam buoyancy material - Google Patents

Abstract

The invention relates to the technical field of foam composite materials, and discloses a PEEK-nano-SiO ₂ composite doped polyurethane foam buoyancy material, comprising the following raw materials in parts by weight: 15-25 parts of toluene diisocyanate (TDI), 3-8 parts of surface-modified nano-SiO ₂ particles, 3-5 parts of polyether ether ketone powder (PEEK), 0.96-1.5 parts of triethanolamine, 0.6-0.9 parts of silicone oil foam stabilizer, 2-3 parts parts of ultrapure water, 0.32 to 0.5 parts of triethylenediamine, and 0.096 to 0.15 parts of stannous octoate; the preparation of the above-mentioned polyurethane foam buoyancy material includes: surface modification of nano _- SiO particles, and mixing with polyetheretherketone Powder, toluene diisocyanate (TDI) and triethanolamine are subjected to foaming reaction under the action of a foaming agent to prepare a polyurethane foam buoyancy material. The invention solves the technical problem that the current foam composite buoyancy material has low compressive strength, so the cell wall will rupture and seep water and lose buoyancy in very shallow water.

Description

A PEEK-nano-SiO2 composite doped polyurethane foam buoyancy material

technical field

The invention relates to the technical field of foam composite materials, in particular to a PEEK-nano-SiO ₂ composite doped polyurethane foam buoyancy material.

Background technique

Chemical foaming buoyancy material is a foam composite material made by chemical foaming method, that is, using resin curing heat to decompose chemical foaming agent to generate gas, disperse in resin to foam, and then cast and form. Although the chemical foaming buoyancy material can obtain an ideal density (the lowest density can reach 0.008g/cm ³ ), the compressive strength of the material is low, and its cell walls will rupture and seep in very shallow water, losing buoyancy. Poor reliability.

SUMMARY OF THE INVENTION

(1) Technical problems solved

In view of the deficiencies of the prior art, the present invention provides a PEEK-nano-SiO ₂ composite doped polyurethane foam buoyancy material, so as to solve the problem of the current foam composite buoyancy material, because the compressive strength is low, so the cell walls are in very shallow water. The technical problem of water seepage and loss of buoyancy will be broken.

(2) Technical solutions

To achieve the above object, the present invention provides the following technical solutions:

A PEEK-nano-SiO ₂ composite doped polyurethane foam buoyancy material, comprising the following raw materials in parts by weight: 15-25 parts of toluene diisocyanate (TDI), 3-8 parts of surface-modified nano-SiO ₂ Granules, 3-5 parts of polyether ether ketone powder (PEEK), 0.96-1.5 parts of triethanolamine, 0.6-0.9 parts of silicone oil foam stabilizer, 2-3 parts of ultrapure water, 0.32-0.5 parts of triethanolamine Ethylenediamine, 0.096-0.15 parts of stannous octoate;

The preparation of the above-mentioned polyurethane foam buoyancy material includes: surface modification of nano _- SiO particles, and foaming reaction with polyether ether ketone powder, toluene diisocyanate (TDI) and triethanolamine under the action of a foaming agent, to obtain Polyurethane foam buoyancy material.

Further, the average particle size of the polyether ether ketone powder (PEEK) is less than or equal to 10um; the nano-SiO ₂ particles include: 100 parts of SiO ₂ with an average particle size of less than or equal to 100 nm, and 70 parts of SiO with an average particle size of less than or equal to 50 nm ₂ .

Preferably, the polyurethane foam buoyancy material comprises the following raw materials in parts by weight: 25g of toluene diisocyanate (TDI), 8g of surface-modified nano _- SiO particles, and 5g of polyether ether with an average particle size of ≤ 10um Ketone powder (PEEK), 1.5 g of triethanolamine, 0.6 g of silicone oil foam stabilizer, 3 g of ultrapure water, 0.32 g of triethylenediamine, 0.15 g of stannous octoate.

Preferably, the polyurethane foam buoyancy material includes the following raw materials in parts by weight: 18g of toluene diisocyanate (TDI), 5g of surface-modified nano _- SiO particles, and 5g of polyether ether with an average particle size of ≤ 10um Ketone powder (PEEK), 1 g of triethanolamine, 0.9 g of silicone oil foam stabilizer, 2 g of ultrapure water, 0.5 g of triethylenediamine, 0.12 g of stannous octoate.

(3) Beneficial technical effects

Compared with the prior art, the present invention has the following beneficial technical effects:

The present invention prepares the polyurethane foam buoyancy material by modifying the surface of nano-SiO ₂ particles, and performing foaming reaction with polyether ether ketone powder, toluene diisocyanate (TDI) and triethanolamine under the action of a foaming agent. The density of the polyurethane foam buoyancy material is 0.20～0.24g/cm ³ , and the compressive strength is 86～90MPa;

Compared with the density of the polyurethane foam buoyancy material prepared in the comparative example of 0.18g/cm ³ and the compressive strength of 72MPa, while the density of the polyurethane foam buoyancy material is basically the same as that of the polyurethane foam buoyancy material, a technology for significantly improving the compressive strength of the polyurethane foam buoyancy material has been obtained. Effect;

Therefore, the technical problem that the current foam composite buoyancy material is low in compressive strength, the cell wall will rupture and seep water and lose buoyancy in very shallow water.

Detailed ways

The surface-modified nano _- SiO particles were prepared as follows:

Drying 100g of SiO ₂ with an average particle size of ≤100nm and 70g of SiO ₂ with an average particle size of ≤50nm in an oven at 120°C for 2h;

The two kinds of nano-SiO ₂ with different particle sizes that have been dried above are dispersed in 500 mL of xylene solution at the same time, first ultrasonically dispersed for 30 min, then magnetically stirred for 30 min, and then dropwise added 100 g of r-aminopropyl under the protection of N ₂ . Triethoxysilane coupling agent and 2g of triethylamine were heated to 130°C for reaction for 12h, then extracted with 500mL absolute ethanol at 100°C for 48h, dried for later use, and surface-modified nano-SiO ₂ particles were obtained;

Example 1:

The polyurethane foam buoyancy material includes the following raw materials in parts by weight: 20g of toluene diisocyanate (TDI), 5g of surface-modified nano-SiO ₂ particles, 3g of polyetheretherketone powder (PEEK) with an average particle size of ≤10um , 0.96g of triethanolamine, 0.6g of silicone oil foam stabilizer, 2g of ultrapure water, 0.32g of triethylenediamine, 0.096g of stannous octoate;

The preparation method of above-mentioned polyurethane foam buoyancy material comprises the following steps:

Step 1: get the toluene diisocyanate (TDI) of 20g, as component one;

Step 2: Take 5g of surface-modified nano-SiO ₂ particles, 3g of polyetheretherketone powder (PEEK) with an average particle size of ≤10um, 0.96g of triethanolamine, 0.6g of silicone oil foam stabilizer, 2g of ultra- Pure water, 0.32g of triethylenediamine, 0.096g of stannous octoate, stir and mix well, as component two;

Step 3: Add component 1 to component 2, stir mechanically at high speed at 1500 rpm for 10 s, then pour it into a mold and freely foam at a temperature of 25 ° C. After the material is matured for 1 hour, the polyurethane foam buoyancy material is prepared.

Embodiment 2:

The polyurethane foam buoyancy material includes the following raw materials in parts by weight: 15g of toluene diisocyanate (TDI), 3g of surface-modified nano-SiO ₂ particles, and 4g of polyetheretherketone powder (PEEK) with an average particle size of ≤10um , 0.96g of triethanolamine, 0.8g of silicone oil foam stabilizer, 3g of ultrapure water, 0.4g of triethylenediamine, 0.1g of stannous octoate;

The preparation method of above-mentioned polyurethane foam buoyancy material comprises the following steps:

Step 1: get 15g of toluene diisocyanate (TDI) as component one;

Step 2: Take 3g of surface-modified nano-SiO ₂ particles, 4g of polyetheretherketone powder (PEEK) with an average particle size of ≤10um, 0.96g of triethanolamine, 0.8g of silicone oil foam stabilizer, 3g of ultra- Pure water, 0.4g of triethylenediamine, 0.1g of stannous octoate, stir and mix well, as component two;

Step 3: Add component 1 to component 2, stir mechanically at high speed at 1500 rpm for 8s, then pour it into a mold and freely foam at a temperature of 25°C. After the material is matured for 1 hour, the polyurethane foam buoyancy material is prepared.

Embodiment three:

The polyurethane foam buoyancy material includes the following raw materials in parts by weight: 25g of toluene diisocyanate (TDI), 8g of surface-modified nano-SiO ₂ particles, 5g of polyetheretherketone powder (PEEK) with an average particle size of ≤10um , 1.5g of triethanolamine, 0.6g of silicone oil foam stabilizer, 3g of ultrapure water, 0.32g of triethylenediamine, 0.15g of stannous octoate;

The preparation method of above-mentioned polyurethane foam buoyancy material comprises the following steps:

Step 1: get 25g of toluene diisocyanate (TDI) as component one;

Step 2: Take 8g of surface-modified nano-SiO ₂ particles, 5g of polyetheretherketone powder (PEEK) with an average particle size of ≤10um, 1.5g of triethanolamine, 0.6g of silicone oil foam stabilizer, 3g of ultra Pure water, 0.32g of triethylenediamine, 0.15g of stannous octoate, stir and mix evenly, as component two;

Step 3: Add component 1 to component 2, stir mechanically at high speed for 15s at 1500 rpm, then pour it into a mold and freely foam at a temperature of 25°C. After the material is matured for 1 hour, the polyurethane foam buoyancy material is prepared.

Embodiment 4:

The polyurethane foam buoyancy material includes the following raw materials in parts by weight: 18g of toluene diisocyanate (TDI), 5g of surface-modified nano-SiO ₂ particles, 5g of polyetheretherketone powder (PEEK) with an average particle size of ≤10um , 1g of triethanolamine, 0.9g of silicone oil foam stabilizer, 2g of ultrapure water, 0.5g of triethylenediamine, 0.12g of stannous octoate;

The preparation method of above-mentioned polyurethane foam buoyancy material comprises the following steps:

Step 1: get 18g of toluene diisocyanate (TDI) as component one;

Step 2: Take 5g of surface-modified nano-SiO ₂ particles, 5g of polyetheretherketone powder (PEEK) with an average particle size of ≤10um, 1g of triethanolamine, 0.9g of silicone oil foam stabilizer, 2g of ultrapure Water, 0.5g triethylenediamine, 0.12g stannous octoate, stir and mix well, as component two;

Step 3: Add component 1 to component 2, stir mechanically at high speed for 15s at 1500 rpm, then pour it into a mold and freely foam at a temperature of 25°C. After the material is matured for 1 hour, the polyurethane foam buoyancy material is prepared.

Comparative ratio:

The polyurethane foam buoyancy material includes the following raw materials in parts by weight: 20g of toluene diisocyanate (TDI), 0.96g of triethanolamine, 0.6g of silicone oil foam stabilizer, 2g of ultrapure water, 0.32g of triethylene diisocyanate Amine, 0.096g of stannous octoate;

The preparation method of above-mentioned polyurethane foam buoyancy material comprises the following steps:

Step 1: get the toluene diisocyanate (TDI) of 20g, as component one;

Step 2: take 0.96g of triethanolamine, 0.6g of silicone oil foam stabilizer, 2g of ultrapure water, 0.32g of triethylenediamine, 0.096g of stannous octoate, stir and mix well, as component two;

Step 4: Add component 1 to component 2, stir mechanically at high speed at 1500rpm for 10s, then pour it into a mold and freely foam at a temperature of 25°C. After the material is matured for 1h, the polyurethane foam buoyancy material is prepared.

Performance Testing:

The properties of the polyurethane foam buoyancy materials prepared in the above examples and comparative examples were tested, and the test results are shown in Table 1 below.

Table 1

Example Density (g/cm³) Compressive strength (MPa) Example 1 0.24 86 Embodiment 2 0.24 88 Embodiment 3 0.22 90 Embodiment 4 0.20 89 Comparative ratio 0.18 72

Claims (3)

1. a PEEK-nano-SiO composite _doped polyurethane foam buoyancy material, is characterized in that, comprises the raw material of following parts by weight ratio: 15～25 parts of toluene diisocyanate (TDI), 3～8 parts of surface Modified nano-SiO ₂ particles, 3-5 parts of polyether ether ketone powder, 0.96-1.5 parts of triethanolamine, 0.6-0.9 parts of silicone oil foam stabilizer, 2-3 parts of ultrapure water, 0.32-0.5 parts parts of triethylenediamine, 0.096 to 0.15 parts of stannous octoate; The preparation of the above-mentioned polyurethane foam buoyancy material includes: surface modification of nano-SiO ₂ particles, and foaming reaction with polyether ether ketone powder, toluene diisocyanate (TDI) and triethanolamine under the action of a foaming agent, and the obtained Polyurethane foam buoyancy material; Wherein, the average particle size of the polyether ether ketone powder is less than or equal to 10um; Wherein, the preparation of the surface-modified nano-SiO ₂ particles is as follows: 100 g of SiO ₂ with an average particle size of ≤ 100 nm and 70 g of SiO ₂ with an average particle size of ≤ 50 nm are dried in an oven at 120 ° C for 2 hours; The two kinds of nano- _SiO2 with different particle sizes were simultaneously dispersed in 500mL of xylene solution, first ultrasonically dispersed for 30min, then magnetically stirred for 30min, and then dropwise added 100g of r-aminopropyltriethoxy under the protection of _N2 Silane coupling agent and 2 g of triethylamine were heated to 130 °C for reaction for 12 h, then extracted with 500 mL of absolute ethanol at 100 °C for 48 h, and dried for later use to obtain surface-modified nano-SiO ₂ particles. 2 . The polyurethane foam buoyancy material according to claim 1 , wherein the polyurethane foam buoyancy material comprises the following raw materials in parts by weight: 25g of toluene diisocyanate (TDI), 8g of surface-modified nanomaterials. 3 . SiO ₂ particles, 5g of polyether ether ketone powder with an average particle size of ≤10um, 1.5g of triethanolamine, 0.6g of silicone oil foam stabilizer, 3g of ultrapure water, 0.32g of triethylenediamine, 0.15g of stannous octoate. 3 . The polyurethane foam buoyancy material according to claim 1 , wherein the polyurethane foam buoyancy material comprises the following raw materials in parts by weight: 18 g of toluene diisocyanate (TDI), 5 g of surface-modified nanomaterials. 4 . SiO ₂ particles, 5g of polyether ether ketone powder with an average particle size of ≤10um, 1g of triethanolamine, 0.9g of silicone oil foam stabilizer, 2g of ultrapure water, 0.5g of triethylenediamine, 0.12g of octanoic acid Astin.