Adhesive resin for barrier composite hose and preparation method and application thereof

A technology for bonding resins and composite hoses, applied in the direction of hoses, graft polymer adhesives, pipes/pipe joints/fittings, etc., which can solve the problem of no product, insufficient adhesion, and monomers in barrier composite hoses Residue and other problems, to achieve the effect of less crystal points, high adhesion and stable performance

Active Publication Date: 2015-03-25
合诚技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

EAA is a foreign monopoly technology; as for maleic anhydride grafted PE, although domestic counterparts have done a lot of research and there are many mature products, there are still no suitable products in the field of barrier composite hoses, mainly due to insufficient adhesion. Severe monomer residues, many crystal points, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) 3 parts by mass of maleic anhydride, 1 part by mass of acrylamide and 0.5 parts by mass of initiator (cumene hydroperoxide and BPO are compounded at a mass ratio of 2:1) are dissolved in 4.5 parts by mass of acetone, and then Add 100 parts by mass of HDPE (190°C / 2.16Kg, MFR=20g / 10min) into a high-speed mixer and mix evenly, and finally pass through a reactive twin-screw extruder (screw length-to-diameter ratio L / D is 44:1) Reactive extrusion to obtain maleic anhydride and acrylamide double monomer grafted PE masterbatch; the processing temperature of the twin-screw extruder is 140-180°C.

[0035] (2) 20 parts by mass of PE masterbatch grafted with dual monomers, 60 parts by mass of LLDPE (190°C / 2.16Kg, MFR=1g / 10min), ethylene-octene copolymer (190°C / 2.16Kg, MFR= 18g / 10min) 20 parts by mass, 0.15 parts by mass of PPA additive FX5920A (3M company) and 0.5 parts by mass of antioxidant B215 (BASF) were added together in a high-speed mixer, mixed evenly, and blended by a...

Embodiment 2

[0037] (1) 2 parts by mass of maleic anhydride, 0.7 parts by mass of acrylamide and 0.3 parts by mass of initiator (cumene hydroperoxide and BPO are compounded at a mass ratio of 2:1) are dissolved in 3 parts by mass of acetone, and then Add 100 parts by mass of LDPE (190°C / 2.16Kg, MFR=7g / 10min) into a high-speed mixer and mix evenly, and finally pass through a reactive twin-screw extruder (screw length-to-diameter ratio L / D is 44:1) Reactive extrusion to obtain maleic anhydride and acrylamide double monomer grafted PE masterbatch; the processing temperature of the twin-screw extruder is 140-180°C.

[0038] (2) 25 parts by mass of PE masterbatch grafted with dual monomers, 60 parts by mass of LLDPE (190°C / 2.16Kg, MFR=2g / 10min), ethylene-octene copolymer (190°C / 2.16Kg, MFR= 5g / 10min) 15 mass parts, PPA additive FX 5920A (3M company) 0.1 mass part and antioxidant 1010 (BASF) 0.1 mass part, antioxidant 168 (BASF) 0.2 mass part join in the high-speed mixer together, Mix evenly, a...

Embodiment 3

[0040] (1) 1.5 parts by mass of maleic anhydride, 0.5 parts by mass of acrylamide and 0.1 parts by mass of initiator (cumene hydroperoxide and BPO are compounded at a mass ratio of 2:1) are dissolved in 2.1 parts by mass of acetone, and then Add 100 parts by mass of LLDPE (190°C / 2.16Kg, MFR=2g / 10min) into a high-speed mixer and mix evenly, and finally pass through a reactive twin-screw extruder (screw length-to-diameter ratio L / D is 44:1) Reactive extrusion to obtain maleic anhydride and acrylamide double monomer grafted PE masterbatch; the processing temperature of the twin-screw extruder is 140-180°C.

[0041] (2) 30 parts by mass of PE masterbatch grafted with dual monomers, 60 parts by mass of LLDPE (190°C / 2.16Kg, MFR=7g / 10min), ethylene-octene copolymer (190°C / 2.16Kg, MFR= 0.5g / 10min) 10 parts by mass, 0.05 parts by mass of PPA additive FX5924 (3M company) and 0.2 parts by mass of antioxidant B225 (BASF) were added to the high-speed mixer together, mixed evenly, and blend...

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Abstract

The invention discloses adhesive resin for a barrier composite hose and a preparation method and application thereof. The preparation method comprises the following steps of: firstly dissolving the following materials in parts by weight: 0.1-0.5 part of initiating agents, 1-3 parts of maleic anhydride and 0.5-1.5 parts of acrylamide into acetone, then uniformly mixing with 100 parts of PE, and carrying out reactive extrusion to obtain a maleic anhydride and acrylamide double-monomer grafted PE master batch; then carrying out blending extrusion on the following materials in parts by weight: 20-30 parts of the PE master batch, 50-70 parts of linear low density polyethylene, 10-20 parts of polyolefin elastomers, 0.05-0.15 part of fluoropolymer processing auxiliary agents and 0.2-0.5 part of antioxidants for granulation to obtain the adhesive resin for the barrier composite hose. The adhesive resin disclosed by the invention forms a transparent granule with a natural color in appearance, is stable in property and few in eutectic points and achieves the stripping strength on adhering to EVOH more than 250 N/cm. The barrier composite hose prepared by using the adhesive resin has the advantages of good adhesive property of various layers, high barrier property and smoothness of inner and outer surfaces.

Description

technical field [0001] The invention relates to a resin, in particular to an adhesive resin used for barrier composite hoses and its preparation method and application. Background technique [0002] Barrier composite hose is widely used in food, cosmetics, pharmaceuticals and other packaging fields because it has a barrier layer, which can effectively isolate gas, maintain product quality, and improve product shelf life. The barrier composite hose is generally prepared by five-layer co-extrusion technology. The inner and outer layers are polyethylene (PE) layers, the middle layer is a barrier layer of ethylene / vinyl alcohol copolymer (EVOH), and an adhesive resin is used between the PE layer and the barrier layer. For bonding. At present, the adhesive resin basically relies on imports, mainly including two types of products, ethylene-acrylic acid copolymer (EAA) and maleic anhydride grafted PE. EAA is a foreign monopoly technology; as for maleic anhydride grafted PE, altho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/08C09J151/06C09J11/08C08F255/02C08F222/06C08F220/56F16L11/04
Inventor 匡俊杰池晓明毛日辉游华燕诸泉蒋文真
Owner 合诚技术股份有限公司
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