Capsule type slow-release formaldehyde scavenger and preparation process thereof

Abstract

The invention discloses a capsule type slow-release formaldehyde scavenger and a preparation process thereof, and belongs to the technical field of formaldehyde scavenging. The capsule-type slow-release formaldehyde scavenger comprises a slow-release carrier pellet core and a thinly coated capsule. The capsule type slow-release formaldehyde scavenger is prepared from the following raw materials in parts by mass: 40-70 parts of an activated carbon base material, 30-60 parts of a titanium dioxide base material, 5-10 parts of a forming material, 2-20 parts of a sustained-release material, 1-5 parts of a plasticizer and 0.5-1.5 parts of an anti-sticking agent. The thinly coated capsule is a polytetrafluoroethylene breathable waterproof thin coating, and the preparation process comprises matrix preparation, material mixing, granulation, sustained-release liquid preparation and coating. The titanium dioxide oxide is mixed in the activated carbon matrix, and after the activated carbon, the forming material and the sustained-release material are fused, the sustained-release capsule can continuously adsorb and purify formaldehyde under photocatalysis, and a surface film can isolate external water vapor from soaking, so that the sustained-release efficiency is improved, the coating placement time is remarkably prolonged, and the continuous purification capability on formaldehyde is met.

Description

technical field [0001] The invention belongs to the technical field of formaldehyde removal, and in particular relates to a capsule-type slow-release formaldehyde scavenger and a preparation process thereof. Background technique [0002] During the interior decoration process, a certain amount of formaldehyde will be produced by the decoration board and adhesive colloid. Formaldehyde is an organic chemical substance with the chemical formula HCHO or CH 2 O, molecular weight 30.03, also known as formaldehyde. It is a colorless and irritating gas that is irritating to human eyes and noses. Formaldehyde in the air is often difficult to dissipate, which can easily cause stress reactions in children and adults. People generally use activated carbon to adsorb formaldehyde. [0003] In the existing technology, formaldehyde is adsorbed by formaldehyde scavenger. Chinese patent document CN104492023B discloses a formaldehyde scavenger, which is composed of the following components ...

AI Technical Summary

Problems solved by technology

[0004] Technical problems to be solved: 1. The formaldehyde in the existing plates is not released at one time in the above-mentioned prior art. The traditional scavenger can only clean up the formaldehyde floating in the air when spraying, and the formaldehyde that is continuously emitted in the follow-up Formaldehyde is easy to float in the air again, which affects the safety of indoor personnel. 2. When processing formaldehyde scavenger, it is easy to affect the processing efficiency due to the difficulty in quality of the adsorbent material, and cannot meet the technical problems of large-scale production. In order to solve this Problem, the present invention has developed a capsule type sustained-release formaldehyde scavenger and its preparation process