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Environmental protection type HPVC door frame

An environmentally friendly, PVC resin powder technology, applied in the field of plastic materials, can solve the problems of excessive harmful substances and affecting the export of products to the EU, and achieve the effect of low price

Inactive Publication Date: 2008-02-13
HISENSE HOME APPLIANCES GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing refrigerator door frame strips are extruded by HPVC (rigid polyvinyl chloride). The most commonly used heat stabilizers in HPVC formula systems are lead salts or cadmium salts. There is a formula system to adjust the plastic parts used in the refrigerator, otherwise it will directly affect the export of products to the EU

Method used

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  • Environmental protection type HPVC door frame

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0014] Get 54 parts of PVC resin powder, 3 parts of non-toxic calcium-zinc composite stabilizer, 4 parts of CPE (chlorinated polyethylene), 0.4 part of stearic acid, 0.6 part of polyethylene wax, EBS lubricant (ethylene bis stearamide) 0.4 parts, 3 parts of ACR (acrylic ester copolymer), 13 parts of activated calcium carbonate, 0.6 parts of dioctyl phthalate, 0.6 parts of epoxy soybean oil, 0.6 parts of triphenyl phosphite, 0.6 parts of toner. Add the above-mentioned PVC resin powder, non-toxic calcium-zinc composite stabilizer and various additives into a high-speed mixer for kneading. When the temperature of the mixture reaches 120°C, it is discharged into a low-speed cold mixer to continue mixing, and the temperature is cooled to below 50°C for discharge. Enter the granulation process. The granulation process is carried out by a conical twin-screw extruder, and the processing temperature is six temperature sections, from the fuselage to the machine head, respectively 1#170-...

Embodiment approach 2

[0016] The process of processing is identical with embodiment one, and the parts by weight of each raw material is as follows: 50 parts of PVC resin powders, 1.3 parts of nontoxic calcium-zinc composite stabilizers, 4 parts of CPE (chlorinated polyethylene), 0.25 parts of stearic acid, 0.3 parts of polyethylene wax, 0.3 parts of EBS lubricant (ethylene bis stearamide), 2 parts of ACR (acrylate copolymer), 15 parts of activated calcium carbonate, 0.5 parts of dioctyl phthalate, epoxy large 0.8 parts of soybean oil, 0.4 parts of triphenyl phosphite, and 0.5 parts of toner.

[0017] The above materials can be used to obtain PVC door frames with good performance, and the specific performance data are as follows:

[0018] project name

[0019] The environment-friendly door frame prepared by the above method can be applied to products such as refrigerators, freezers, or disinfection cupboards, and has high practical value.

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Abstract

The invention discloses an environment-friendly HPVC door frame, which is obtained by kneading and extruding. The main raw materials include PVC, a stabilizer, and a surface treatment agent, and are composed of the following substances by weight: PVC resin powder: 45-55, calcium Zinc composite stabilizer: 1-6, chlorinated polyethylene: 1-6, stearic acid: 0.1-1 part, polyethylene wax 0.1-1 part, ethylene bisstearamide: 0.1-0.8 part, acrylate copolymer Matter: 1-3, active calcium carbonate: 8-20, dioctyl phthalate: 0.1-1.5, epoxy soybean oil 0.3-1.2, triphenyl phosphite: 0.2-1.2, toner: 0.2-1 . The preparation method includes the steps of compounding, kneading, granulation and door frame extrusion. The performance index of the environment-friendly door frame prepared according to the invention meets the requirements of the RoHS directive, and the new formula does not affect the processing performance of the original equipment; the raw materials of the formula are easy to obtain and the price is low, and are suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of plastic materials, in particular to an HPVC (rigid polyvinyl chloride) door frame applied to products such as refrigerators. Background technique [0002] From July 1, 2006, the EU Directive on the Prohibition of Hazardous Substances in Electronic and Electrical Equipment (RoHS Directive for short) began to be implemented. All plastic parts of refrigerators exported to the EU and other countries must meet the requirements of the RoHS Directive, namely polybrominated biphenyls (PBB), polybrominated diphenyl ethers ( PBDE), lead (Pb), mercury (Hg), hexavalent chromium (Cr 6+ ) content is not allowed to exceed 1000ppm, while the content of cadmium (Cd) is not allowed to exceed 100ppm. [0003] Existing refrigerator door frame strips are extruded by HPVC (rigid polyvinyl chloride). The most commonly used heat stabilizers in HPVC formula systems are lead salts or cadmium salts. There are many plastic parts u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K5/524F25D23/08C08L23/28C08L33/08C08L91/00C08K5/09C08K5/20C08K3/26
Inventor 雷莉曹家汉陈伟松游飞越胡哲李剑
Owner HISENSE HOME APPLIANCES GRP CO LTD
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