PU plate and preparation method thereof

A sheet material and preparation process technology, which is applied in the field of PU sheet material and preparation, can solve the problems of product quality degradation, easy cracking, etc., and achieve the effect of improving bonding strength, not easy to crack, and improving surface strength and wear resistance

Active Publication Date: 2020-06-05
ANHUI SENTAI WPC GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the gap between the plastic foam core of the board and the plastic layer covering it is easy to crack due to the material, resulting in a decline in product quality

Method used

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  • PU plate and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A kind of PU sheet material, comprises flexible non-foamed PU surface layer and rigid foamed PU core layer, also comprises the PU fusion layer between PU surface layer and PU core layer; Described PU fusion layer comprises the PU surface layer of part and part of the PU core layer, and part of the PU surface layer penetrates into part of the PU core layer, so that the PU surface layer and the PU core layer become a continuous phase. The PU surface layer contains inorganic nanoparticles, the inorganic nanoparticles are ceramic powder, and the addition amount is 20wt% of the mass of the PU surface layer. In this embodiment, the thickness of the PU surface layer is 0.5 cm, the thickness of the PU core layer is 2 cm, and the thickness of the PU fusion layer is about 300 μm.

[0039] A kind of preparation method of PU sheet material, concrete steps are as follows:

[0040] 1. Surface pouring: 1kg toner, 100kg polyether polyol 4110, 50g dibutyltin dilaurate, 20kg isocyanate ...

Embodiment 2

[0045] A kind of PU sheet material, comprises the PU surface layer that does not foam and the PU core layer of foaming, also comprises the PU fusion layer between PU surface layer and PU core layer; Described PU fusion layer comprises the PU surface layer of part and the PU of part The core layer, and part of the PU surface layer penetrates into the part of the PU core layer, so that the PU surface layer and the PU core layer become a continuous phase. The PU surface layer contains inorganic nanoparticles, the inorganic nanoparticles are ceramic powder, and the addition amount is 15wt% of the mass of the PU surface layer. In this embodiment, the thickness of the PU surface layer is 0.5 cm, the thickness of the PU core layer is 2 cm, and the thickness of the PU fusion layer is about 300 μm.

[0046] A kind of preparation method of PU sheet material, concrete steps are as follows:

[0047] 1. Surface pouring: 2kg toner, 100kg polyether polyol YNW-6001A, 80g dibutyltin dilaurate...

Embodiment 3

[0052] A kind of PU sheet material, comprises the PU surface layer that does not foam and the PU core layer of foaming, also comprises the PU fusion layer between PU surface layer and PU core layer; Described PU fusion layer comprises the PU surface layer of part and the PU of part The core layer, and part of the PU surface layer penetrates into the part of the PU core layer, so that the PU surface layer and the PU core layer become a continuous phase. The PU surface layer contains inorganic nanoparticles, the inorganic nanoparticles are ceramic powder, and the addition amount is 15wt% of the mass of the PU surface layer. In this embodiment, the thickness of the PU surface layer is 0.3 cm, the thickness of the PU core layer is 1.8 cm, and the thickness of the PU fusion layer is about 200 μm.

[0053] A kind of preparation method of PU sheet material, concrete steps are as follows:

[0054] 1. Surface pouring: 3kg toner, 100kg polytetrahydrofuran ether glycol, 100g amine catal...

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Abstract

The invention relates to the technical field of wood-plastic material production, in particular to a PU plate and a preparation method. The PU plate comprises an unfoamed PU surface layer and a foamedPU core layer, and further comprises a PU fusion layer located between the PU surface layer and the PU core layer. Wherein the PU fusion layer comprises a part of PU surface layer and a part of PU core layer, and a part of PU surface layer permeates into a part of PU core layer, so that the PU surface layer and the PU core layer form a continuous phase. PU plate, the PU plate is provided with therigid PU foam core and the flexible PU surface layer, and the PU fusion layer is formed between the PU surface layer and the PU foam core, so that the PU surface layer and the PU foam core form a continuous phase, the bonding strength between the PU foam core and the flexible PU surface layer is greatly improved, and the PU plate is not easy to crack.

Description

technical field [0001] The invention relates to the technical field of wood-plastic material production, in particular to a PU board and a preparation method. Background technique [0002] In the flooring industry, PU sheet is an emerging material. It is lightweight and as strong as wood. Compared with PVC foam sheet, PU sheet has better soft touch and better environmental safety. Therefore, PU panels have become an important direction in the field of wood-like panels. [0003] The PCT patent with publication number WO2018154287A1 discloses a low-endothermic flame-retardant polyurethane imitation wood material. The polyurethane imitation wood board includes a rigid plastic foam core and a plastic layer covering it. Microspheres. The plastic foam core creates the required structural support while keeping the floor light. The microspheres reflect light and reduce the amount of radiation absorbed by the floor when it is in direct sunlight, so the microspheres effectively p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B27/40B32B27/20B32B33/00C08L75/08C08L97/02C08L83/04C08K3/26C08K7/14B29D7/00
CPCB29D7/00B32B5/18B32B27/065B32B27/20B32B27/40B32B2255/10B32B2255/26B32B2266/0278B32B2307/554C08K2003/265C08L75/08C08L2205/03C08L2205/16C08L97/02C08L83/04C08K3/26C08K7/14
Inventor 唐道远李磊吴光荣
Owner ANHUI SENTAI WPC GRP CO LTD
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