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Method for preparing compatible hide powder/polyethylene mixture

A technology of polyethylene and blends is applied in the field of preparation of compatible leather powder/polyethylene blends to achieve the effects of reducing production costs and simple raw materials

Inactive Publication Date: 2013-02-13
NINGBO UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to better solve the utilization problem of leather waste, the purpose of the present invention is to provide a method for high-value utilization of leather waste, so as to prepare leather powder / polyethylene blends with excellent performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Accurately weigh 100 parts by weight of polyethylene, 10 parts by weight of skin powder, 5 parts by weight of polyethylene grafted maleic anhydride, and 0.5 parts by weight of dicumyl peroxide (DCP), and then add the above raw materials into the high-speed mixer at the same time After blending, add the uniformly mixed materials to the banbury mixer for banburying, first banbury at 160°C for 5 minutes, the speed is 15r / min, and the torque is 38-42Nm, then raise the temperature to 180°C and then banbury for 15 minutes, the speed is 30r / min, with a torque of 32-36Nm, and discharging while it is hot, a skin powder / polyethylene blend with good compatibility can be obtained, and its mechanical properties are respectively tensile strength of 10.4Mpa and elongation at break of 64.3%. The melting peak temperature of the blended material was 120.8°C through differential thermal scanning analysis. After 20 days of degradation in soil, the tensile strength of the blended material d...

Embodiment 2

[0018] Accurately weigh 100 parts by weight of polyethylene, 15 parts by weight of leather powder, 5 parts by weight of polyethylene grafted maleic anhydride, 5 parts by weight of ethylene acrylic acid copolymer (EAA), 0.8 parts by weight of benzoyl peroxide, first Add benzoyl to an appropriate amount of acetone to dissolve it, and then add it to a high-speed mixer for blending with leather powder, polyethylene, polyethylene grafted maleic anhydride and ethylene acrylic acid copolymer. After the acetone is completely volatilized, put Put the mixed material into the internal mixer for internal mixing, firstly internally mix at 160°C for 5 minutes, the speed is 15r / min, the torque is 34-40Nm, then the temperature is raised to 180°C and then internally mixed for 15 minutes, the speed is 30r / min, the torque is 26-32Nm , and discharged while hot, the skin powder / polyethylene blend with good compatibility can be obtained, and its mechanical properties are respectively tensile strengt...

Embodiment 3

[0020] Accurately take by weighing 100 parts by weight of polyethylene, 20 parts by weight of leather powder, 10 parts by weight of polyethylene grafted maleic anhydride, 5 parts by weight of maleic anhydride, and 1 part by weight of dicumyl peroxide (DCP). At the same time, add it to the high-speed mixer for blending, and then add the uniformly mixed material to the internal mixer for internal mixing. First, banbury at 160°C for 10 minutes, with a rotation speed of 15r / min and a torque of 40-45Nm, and then heat up to 180°C. Banburying for 30 minutes, rotating speed 30r / min, torque 32-38Nm, discharging while hot, you can get skin powder / polyethylene blend with good compatibility, its mechanical properties are tensile strength 12.3Mpa, fracture Elongation 48.4%. According to the differential thermal scanning analysis, the melting peak temperature of the blended material is 1223°C. After the blended material degrades in soil for 20 days, its tensile strength drops to 6.4Mpa, and...

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Abstract

The invention relates to a method for preparing a compatible hide powder / polyethylene mixture, belonging to the field of natural high-molecular modified polymer materials. The compatible hide powder / polyethylene mixture comprises hide powder, polyethylene, an additive and an initiator, wherein the addition quantities of the additive and the initiator are respectively 1-25 percent and 0.03-2 percent of the weight of the polyethylene; and the weight ratio of the hide powder to the polyethylene is 1:19-2:1. The compatible hide powder / polyethylene mixture has simple required raw materials, wherein the hide powder is prepared by directly smashing leather wastes, and the hide powder contains collagen of more than 80 percent; the invention solves the problem of compatibility of the hide powder and the polyethylene through the mutual effect of the additive and the initiator; in addition, the compatible hide powder / polyethylene mixture can be completed in one step in an internal mixer, thereby having simple preparation process and easy operation and being suitable for large-scale industrialized production.

Description

technical field [0001] The invention belongs to the field of natural polymer modified polymer materials, in particular to a preparation method of a compatible skin powder / polyethylene blend. Background technique [0002] my country is a big country in tanning, and the pollution of leather leftover waste has always been a long-standing problem both at home and abroad. Even if the split leather is used for tanning to the greatest extent in our country, 40% to 50% of the raw leather will inevitably be reduced to leather waste in the dry and wet operations of tanning, mainly raw leather Leftovers, gray leather peeling shavings, and leather waste produced by smoothing and trimming of blue leather. Leather solid waste contains more than 80% collagen, and also contains a small amount of keratin, globulin and trace non-protein components. At present, the utilization of leather waste mainly revolves around the recovery and utilization of protein and chromium of. The U.S. had a tre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L89/06C08L51/06C08L23/08C08L33/02C08F291/00
Inventor 邵双喜周国权杨建平余绍火蒋岚
Owner NINGBO UNIVERSITY OF TECHNOLOGY