Foaming material, preparation method thereof and foaming product
A technology of foaming materials and modified materials, which is applied in the field of luminescent materials and their preparation, and foaming products, and can solve problems such as poor impact strength and compressive strength, and limited application prospects
Patent Information
- Authority / Receiving Office
- CN · China
- Current Assignee / Owner
- Publication Date
- 2020-04-17
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Abstract
Description
technical field
[0001] The invention relates to the technical field of polymer materials, in particular to a luminescent material, a preparation method thereof, and a foamed product. Background technique
[0002] The chain segments inside the poly-4-methyl-1-pentene (TPX) molecule are not tightly packed, the arrangement is irregular, the packing density is low, and the density of the polymer is as low as 0.83. Compared with general-purpose plastics such as polyethylene and polypropylene, it has high quality. light advantage. The side chain of TPX is bulky and the movement of molecular chains is restricted, so its Vicat softening point is as high as 113°C and its melting point is as high as 220-240°C. Polymers have a wider range of applications. The chemical structural unit of TPX is the dimerization of polypropylene, and the main chain is bonded by C-C bonds, so the properties of TPX materials are stable, and PS, PMMA, etc. will not fail due to internal stress concentratio...
Examples
preparation example Construction
[0046] The present invention also provides the preparation method of above-mentioned foam material, comprises the following steps:
[0047] S101: melting and blending each raw material to obtain a modified material;
[0048] S102: Treat the modified material with a supercritical foaming process to prepare the foamed material.
[0049] In step S101, an extruder can be used for melt blending to obtain the desired modified material; in step S102, supercritical equipment can be used, and further, step S102 includes the following steps: adding the modified material to the autoclave In the medium, quickly fill the foaming agent (such as: carbon dioxide) until the predetermined foaming pressure and temperature are reached, and stand for a period of time until the supercritical gas diffuses into the modified material melt and reaches a saturated state to form a homogeneous system . The polymer / gas homogeneous system is decompressed to atmospheric pressure in a very short time, the s...
Embodiment 1
[0058] Add 1000g of TPX, 48g of chitin nanocrystals with a particle size of 80nm, 2g of antioxidant 1010, 5g of iron red, 1g of sodium silicate, and 1.5g of calcium stearate emulsion additives into the extruder to blend evenly and extrude out. Adding the modified TPX composition to an autoclave using supercritical CO 2 For foaming, the temperature of the homogeneous system is 225°C, the pressure at saturation is 15MPa, the saturation time is 190min, the pressure release rate is 200MPa / s, and the cooling rate is 5°C / min. The prepared foam material is processed into a board.
Embodiment 2
[0060] Add 1000g of TPX, 30g of nylon 66, 3g of graphene with a particle size of 90nm, 0.1g of antistatic agent, 1g of phthalocyanine pigment, 3g of sodium silicate, and 2g of fatty alcohol additives into the extruder and mix evenly extrude. Adding the modified TPX composition to an autoclave using supercritical CO 2 For foaming, the temperature of the homogeneous system is 235°C, the pressure at saturation is 18MPa, the saturation time is 30min, the pressure release rate is 450MPa / s, and the cooling rate is 6°C / min. The prepared foam material is processed into a hollow container.