Light and thin high-reinforced plastic composite sheet for household appliances and preparation method thereof

A technology of reinforced plastics and composite sheets, applied in chemical instruments and methods, household components, applications, etc., can solve the problems of poor reinforcement effect of inorganic fibers, uneven dispersion of inorganic fibers, poor effect, etc., and achieve light weight , light weight and high reinforcement, the effect of improving strength and rigidity

Inactive Publication Date: 2018-09-28

CHENDU NEW KELI CHEM SCI CO LTD

4 Cites 2 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0009] Aiming at the currently widely used method of blending inorganic fibers and resins in light-weight and high-strength plastic composite materials, there are disadvantages of uneven dispersion of inorganic fibers, poor reinforcement effect of inorganic fibers, and existing methods of surface modification to improve dispersion The method process is complic...

Abstract

The invention provides a light and thin high-reinforced plastic composite sheet for household appliances and a preparation method thereof. The preparation method comprises mixing netty porous ceramsites and a coupling agent at a high speed, adding thermoplastic polyurethane into the mixture, carrying out mixing extrusion molding to obtain light and thin sheets, covering two sides of a high-moduluscarbon fiber non-woven fabric with hot-melt adhesive films, carrying out hot pressing to obtain a sandwich layered material, arranging the light and thin sheets to the front and back sides of the sandwich layered material, and carrying out rolling compounding to obtain the three-layer light and thin high-reinforced plastic composite sheet. The netty porous ceramsites are dispersed in the thermoplastic polyurethane and are used as supports so that the sheet weight is effectively reduced and sheet weight reduction is realized. The high-modulus carbon fiber non-woven fabric is used as a sheet sandwich layer. The composite sheet obtained by rolling is light and has high strength and is suitable for household appliances.

Application Domain

Synthetic resin layered productsLamination +2

Technology Topic

Woven fabricThin sheet +10

Examples

Experimental program(6)
Comparison scheme(2)

Example Embodiment

[0032] Example 1

[0033] The preparation process is:

[0034] (1) Add the reticulated hollow ceramsite and the coupling agent to the high-speed mixer, perform surface treatment, add thermoplastic polyurethane to mix after cooling, and then perform extrusion molding to obtain a light and thin sheet; reticulated hollow ceramsite The average particle size is 8mm, and the porosity is 90%; the coupling agent is vinyl triethoxy silane; the weight parts of the raw materials in the light and thin sheet are 25 parts by weight of the net-shaped hollow ceramsite, the coupling agent 1 Parts by weight, 74 parts by weight of thermoplastic polyurethane;

[0035] (2) The high modulus carbon fiber is made into a non-woven fabric, covered with hot melt adhesive film on both sides, and then subjected to a hot pressing process to obtain a sandwich layer material; the elastic modulus of the carbon fiber is 180 GPa and the average diameter is 6 μm. The average length is 70mm; the hot melt adhesive film is EVA film; the heating temperature of the hot pressing process is 115°C, the pressure is 5MPa, and the pressure holding time is 16s;

[0036] (3) The sandwich layer material obtained in step (2) and the light and thin sheet produced in step (1) are roll-composited, the sandwich layer material is the middle layer, and the light and thin sheet is bonded to the sandwich layer After curing, three layers of light, thin and high-strength plastic composite sheet can be obtained; the roller pressure of the roller composite is 7MPa, the heating temperature is 136℃, and the number of pressing is 3 times; the composite three layers The thicknesses are 0.5mm for the thinner and lighter sheet layer, 0.9mm for the sandwich layer and 0.5mm for the thinner and lighter sheet layer.

[0037] testing method:

[0038] The plastic composite sheet prepared in Example 1 with a length of 200 mm and a width of 20 mm was selected as the sample;

[0039] Measure the mass m and volume V of the sample respectively, and use the density formula ρ=m/V to calculate the density;

[0040] Carry out the compressive strength test in accordance with GB/T 1041-2008, and use a compressive strength tester to test at 25°C and 50% relative humidity. The compression speed is 10mm/min, and the compressive strength is measured;

[0041] The elastic modulus test is carried out in accordance with GB/T 14694-1993, and the elastic modulus tester is used to test the sample under 25℃ and 50% relative humidity.

[0042] The density, compressive strength and elastic modulus of the plastic composite sheet of Example 1 measured by the above method are shown in Table 1.

Example Embodiment

[0043] Example 2

[0044] The preparation process is:

[0045] (1) Add the reticulated hollow ceramsite and the coupling agent to the high-speed mixer, perform surface treatment, add thermoplastic polyurethane to mix after cooling, and then perform extrusion molding to obtain a light and thin sheet; reticulated hollow ceramsite The average particle size is 5mm, and the porosity is 85%; the coupling agent is vinyltrimethoxysilane; the weight of the raw material in the light and thin sheet is 20 parts by weight of reticulated hollow ceramsite and 1 weight of coupling agent Parts, 79 parts by weight of thermoplastic polyurethane;

[0046] (2) The high modulus carbon fiber is made into a non-woven fabric, covered with hot melt adhesive film on both sides, and then subjected to a hot pressing process to obtain a sandwich layer material; the elastic modulus of the carbon fiber is 150 GPa, and the average diameter is 5 μm. The average length is 40mm; the hot melt adhesive film is PES film; the heating temperature of the hot pressing process is 110°C, the pressure is 3MPa, and the pressure holding time is 20s;

[0047] (3) The sandwich layer material obtained in step (2) and the light and thin sheet produced in step (1) are roll-composited, the sandwich layer material is the middle layer, and the light and thin sheet is bonded to the sandwich layer After curing, three layers of light, thin and high-strength plastic composite sheet can be obtained; the roll pressure of the roll compound is 5MPa, the heating temperature is 130℃, and the number of pressing times is 5; the three layers after compounding The thicknesses are 0.3mm for the thinner and lighter sheet layer, 0.6mm for the sandwich layer and 0.8mm for the thinner and lighter sheet layer.

[0048] testing method:

[0049] The plastic composite sheet made in Example 2 with a length of 200 mm and a width of 20 mm was selected as the sample;

[0050] Measure the mass m and volume V of the sample respectively, and use the density formula ρ=m/V to calculate the density;

[0051] Carry out the compressive strength test in accordance with GB/T 1041-2008, and use a compressive strength tester to test at 25°C and 50% relative humidity. The compression speed is 10mm/min, and the compressive strength is measured;

[0052] The elastic modulus test is carried out in accordance with GB/T 14694-1993, and the elastic modulus tester is used to test the sample under 25℃ and 50% relative humidity.

[0053] The density, compressive strength and elastic modulus of the plastic composite sheet of Example 2 measured by the above method are shown in Table 1.

Example Embodiment

[0054] Example 3

[0055] The preparation process is:

[0056] (1) Add the reticulated hollow ceramsite and the coupling agent to the high-speed mixer, perform surface treatment, add thermoplastic polyurethane to mix after cooling, and then perform extrusion molding to obtain a light and thin sheet; reticulated hollow ceramsite The average particle size is 10mm, and the porosity is 92%; the coupling agent is vinyl tris (β-methoxyethoxy) silane; the weight of the raw material in the light and thin sheet is 30 Parts by weight, 2 parts by weight of coupling agent, 68 parts by weight of thermoplastic polyurethane;

[0057] (2) The high modulus carbon fiber is made into a non-woven fabric, covered with hot melt adhesive film on both sides, and then subjected to a hot pressing process to obtain a sandwich layer material; the elastic modulus of the carbon fiber is 200 GPa and the average diameter is 8 μm. The average length is 80mm; the hot melt adhesive film is a PA film; the heating temperature of the hot pressing process is 130°C, the pressure is 6MPa, and the pressure holding time is 10s;

[0058] (3) The sandwich layer material obtained in step (2) and the light and thin sheet produced in step (1) are roll-composited, the sandwich layer material is the middle layer, and the light and thin sheet is bonded to the sandwich layer After curing, three layers of light, thin and high-strength plastic composite sheet can be obtained; the roll pressure of the roll compound is 10MPa, the heating temperature is 140℃, and the number of pressing times is 2; the three layers after compounding The thicknesses are respectively 0.8 mm for the light and thin sheet layer, 1.2 mm for the sandwich layer and 0.8 mm for the light and thin sheet layer.

[0059] testing method:

[0060] The plastic composite sheet prepared in Example 3 with a length of 200 mm and a width of 20 mm was selected as the sample;

[0061] Measure the mass m and volume V of the sample respectively, and use the density formula ρ=m/V to calculate the density;

[0062] Carry out the compressive strength test in accordance with GB/T 1041-2008, and use a compressive strength tester to test at 25°C and 50% relative humidity. The compression speed is 10mm/min, and the compressive strength is measured;

[0063] The elastic modulus test is carried out in accordance with GB/T 14694-1993, and the elastic modulus tester is used to test the sample under 25℃ and 50% relative humidity.

[0064] The density, compressive strength and elastic modulus of the plastic composite sheet of Example 3 measured by the above method are shown in Table 1.

PUM

Property	Measurement	Unit
The average particle size	8.0	mm
Elastic modulus	180.0	GPa
The average diameter	6.0	µm

Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Lightweight

Light and thin high-reinforced plastic composite sheet for household appliances and preparation method thereof

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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