Low VOC (volatile organic compound) polyformaldehyde (POM) material and preparation method thereof

A technology of polyoxymethylene material and formaldehyde absorber, which is applied in the field of polyoxymethylene materials, can solve the problems of reducing the purity and phase of POM materials, deteriorating the mechanical properties, notched impact properties and elongation at break of POM materials, and achieving low VOC emission. Features, low cost, effect of improving thermal stability

Active Publication Date: 2014-08-27
TANGSHAN ZHONGHAO CHEM
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the introduction of zeolites or carbon substances not only reduces the purity and phase of POM materials, but also deteriorates the main properties of POM materials such as mechanical properties, notched impact properties and elongation at break.

Method used

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  • Low VOC (volatile organic compound) polyformaldehyde (POM) material and preparation method thereof
  • Low VOC (volatile organic compound) polyformaldehyde (POM) material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0029] Use SHJ 30 (L / D=40) twin-screw extruder with vacuum exhaust, add POM resin, antioxidant, formaldehyde absorbent, and formic acid absorbent to the main feeding port. , add a devolatilizer at the natural exhaust port. The material is melted and kneaded by the extruder, exhausted, extruded, and granulated to obtain a low-VOC polyoxymethylene material. The processing temperature of the extruder is 165-210° C., the rotation speed of the main engine is 50-200 rpm, and the vacuum degree is ≤-0.05 MPa. The contents of each component in Examples 1-7 are shown in Table 1.

[0030] The VOC content of the commercialized polyoxymethylene resin used in the present invention is 8.4 μ g·g -1 . After the commercialized polyoxymethylene resin is processed by the technical solution of the present invention, the VOC content in the gained polyoxymethylene resin is significantly reduced, and the mechanical properties are almost consistent with those of the polyoxymethylene resin before the...

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Abstract

The invention relates to a low VOC (volatile organic compound) polyformaldehyde (POM) material and a preparation method thereof and belongs to the technical field of polyformaldehyde materials. The low VOC POM material comprises the following components in percentage by mass: 87-99% of POM resin or powder thereof, 0.1-1% of antioxidant, 0.1-1% of formaldehyde absorber, 0.1-1% of formic acid absorber and 0.6-10% of devolatilization agent. The prepared low VOC POM material has mechanical properties of general POM and also has extremely low VOC emission property.

Description

technical field [0001] The invention relates to a low-VOC polyoxymethylene (POM) material and a preparation method thereof, belonging to the technical field of polyoxymethylene materials. Background technique [0002] Along with popularizing of automobile as a kind of main means of transportation, the time that people stay in the car is more and more longer, and the quality of the interior environment of narrow and poor air circulation directly affects people's health. With the advancement of material technology and the trend of automobile lightweight, more and more organic polymer materials are applied to the automobile manufacturing industry, which makes people pay more and more attention to the content of volatile organic compounds (VOC) in automobiles. [0003] According to the definition of the World Health Organization (WHO), VOC refers to a series of volatile compounds with a boiling point range of 50-260°C at normal pressure and a saturated vapor pressure exceeding 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L59/00C08K13/06C08K9/12C08K9/10C08K3/28C08K5/17C08K5/05C08K3/22C08K5/3492
Inventor 李建华郭学华金旺王亚涛杨大志马小丰刘莉莉
Owner TANGSHAN ZHONGHAO CHEM
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