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Method for preparing composite wood and composite wood

A composite material and polymer technology, which can be used in the field of preparing composite materials with light stability, and can solve the problems of light stability of polymer products and other problems.

Inactive Publication Date: 2017-04-26
FDC LEES CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can improve the stability of the polymer material to light and avoid the deterioration of the polymer material (such as embrittlement, yellowing or aging, etc.), the light stability of the polymer product made by the method is still not high enough. meet the needs of the industry

Method used

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  • Method for preparing composite wood and composite wood
  • Method for preparing composite wood and composite wood
  • Method for preparing composite wood and composite wood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Embodiment 1 Composite material

[0081] 0.002 parts by weight of isophorone diisocyanate, 0.008 parts by weight of N,N'-bis(1,2,2,6,6-pentamethyl-piperidinyl)-1,6-hexanediamine, and 100 parts by weight of PP were mixed evenly, and extruded by a twin-screw extruder, the extrusion temperature was 180° C., and the rotational speed of the main screw was 100 rpm.

Embodiment 2 to 9

[0083] Examples 2 to 9 prepared the composite material in the same steps as in Example 1, except that the types and amounts of raw materials were changed. The kind and usage amount of this raw material are shown in Table 1.

Embodiment 10

[0085] 4 parts by weight of isophorone diisocyanate, 16 parts by weight of N,N'-bis(1,2,2,6,6-pentamethyl-piperidinyl)-1,6-hexanediamine, and 80 parts by weight of PP were mixed uniformly and extruded by a twin-screw extruder at an extrusion temperature of 180° C. and a main screw rotating speed of 100 rpm to form an extruded product. The extrudate will be cooled by air at room temperature, pelletized at 60 rpm, and dried at 100°C for 4 hours to form a dry product. Mix 1 part by weight of the dried material and 100 parts by weight of PP uniformly, and extrude with a twin-screw extruder, the extrusion temperature is 180° C., and the rotational speed of the main screw is 100 rpm.

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Abstract

A method for preparing composite wood comprises the following steps: a polymer and an additive composite are mixed to form a mixture, wherein the additive composite comprises a component with a polyisocyanate group and a hindered amine component with a reaction functional group, and the reaction functional group in the hindered amine component with the reaction functional group comprises at least one of the following groups as follows: hydroxyl, a thiol group and amino; the component with the polyisocyanate group and the hindered amine component with the reaction functional group in the mixture are subjected to an addition reaction.

Description

technical field [0001] The invention relates to a method for preparing a composite material, in particular to a method capable of preparing a composite material with light stability. Background technique [0002] Among polymer materials, polyolefin has better chemical resistance and mechanical properties, and has become a widely used polymer material. However, polyolefins are easily affected by light during processing or use of finished products made of polyolefins, resulting in deterioration problems such as yellowing, aging, or embrittlement. [0003] US Patent Publication No. 6051164 discloses a method of making stable polymer articles. The method comprises the following steps: mixing a polymer material, an ortho hydroxytris-aryl triazine light absorber, and a hindered amine light stabilizer (hinderedamine light stabilizers) with a molecular weight above 500, The weight ratio of the hindered amine light stabilizer to the o-hydroxyl-triaryl triazine light absorber ranges...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K5/00C08K5/3492C08K5/3435C08K5/29C08K5/134C08K5/526C08L55/02C08L23/06C08L25/12C08L59/00C08L77/06C08L69/00
Inventor 薛友傑吴宗鸿锺元栋陈桢凯李昆昌
Owner FDC LEES CHEM IND
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