Formaldehyde in-situ absorption inserted layer assembling function composite material and preparation method thereof

Abstract

The invention relates to a composite material of formaldehyde in situ absorption and intercalation with assembling function and a preparation method thereof, which pertains to chemical material field. The invention is characterized in that: the components of the invention by weight percentage are 0.1 to 90 percent of diatomite, 0.1 to 90 percent of acid phosphate and 0.1 to 90 percent of organic amine. The invention takes diatomite as carrier and adsorbent, and the diatomite is adsorbed and inlayed with acid phosphate through calcination. The obtained material is reacted with the organic amine to form a layer of organic amine phosphate on the surface of the diatomite; at last, the finished product is obtained by decompression drying, smashing and grinding. The product is characterized by stable chemical properties, high thermal stability, non-volatile property, high reaction activity with formaldehyde and high capture ability for formaldehyde. When being applied to production of wood-based panel, the invention can not only be taken as filler, but also as formaldehyde scavenger, which has no effect on physical properties of the wood-based panel and no secondary pollution.

Description

technical field [0001] The invention relates to a formaldehyde in-situ absorption intercalation assembly functional composite material and a preparation method thereof, belonging to the field of chemical materials. Background technique [0002] Modern scientific research shows, formaldehyde is very harmful to human health, and its harm mainly shows aspects such as allotriosmia, stimulation allergy, abnormal pulmonary function, abnormal liver function, and immunologic dysfunction. When the indoor air content reaches 0.12mg / m 3 There will be peculiar smell and discomfort when it reaches 0.5mg / m 3 Occasionally stimulate the eyes to cause nausea, vomiting, cough, chest tightness, asthma and even emphysema, reaching 30mg / m 3 can result in immediate death. Long-term living in an air environment containing formaldehyde can cause chronic respiratory diseases, women's menstrual disorders, pregnancy syndrome, lowered neonatal physique, chromosomal abnormalities, and may cause cance...

AI Technical Summary

Problems solved by technology

These methods mainly have the following problems: (1) the reactivity with formaldehyde is not too high, and the ability to capture formaldehyde is not strong; (2) most of them will be hydrolyzed, releasing volatile ammonia, causing secondary pollution; ( 3) Most of the existing additive-type formaldehyde capture agents are small molecular compounds, which will reduce the physical and mechanical properties of wood-based panels; (4) External spray-type formaldehyde capture agents can only treat the symptoms but not the root cause

At present, there are no research reports and patent publications on acid phosphate-diatomaceous earth-organic amine new formaldehyde in-situ absorption intercalation assembly functional composite materials and their preparation methods